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   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 108
 109 Program options:
 110   --disable-programs       do not build command line programs
 111   --disable-ffmpeg         disable ffmpeg build
 112   --disable-ffplay         disable ffplay build
 113   --disable-ffprobe        disable ffprobe build
 114   --disable-ffserver       disable ffserver build
 115
 116 Documentation options:
 117   --disable-doc            do not build documentation
 118   --disable-htmlpages      do not build HTML documentation pages
 119   --disable-manpages       do not build man documentation pages
 120   --disable-podpages       do not build POD documentation pages
 121   --disable-txtpages       do not build text documentation pages
 122
 123 Component options:
 124   --disable-avdevice       disable libavdevice build
 125   --disable-avcodec        disable libavcodec build
 126   --disable-avformat       disable libavformat build
 127   --disable-avutil         disable libavutil build
 128   --disable-swresample     disable libswresample build
 129   --disable-swscale        disable libswscale build
 130   --disable-postproc       disable libpostproc build
 131   --disable-avfilter       disable libavfilter build
 132   --enable-avresample      enable libavresample build [no]
 133   --disable-pthreads       disable pthreads [auto]
 134   --disable-w32threads     disable Win32 threads [auto]
 135   --disable-os2threads     disable OS/2 threads [auto]
 136   --disable-network        disable network support [no]
 137   --disable-dct            disable DCT code
 138   --disable-dwt            disable DWT code
 139   --disable-error-resilience disable error resilience code
 140   --disable-lsp            disable LSP code
 141   --disable-lzo            disable LZO decoder code
 142   --disable-mdct           disable MDCT code
 143   --disable-rdft           disable RDFT code
 144   --disable-fft            disable FFT code
 145
 146 Hardware accelerators:
 147   --disable-dxva2          disable DXVA2 code [autodetect]
 148   --disable-vaapi          disable VAAPI code [autodetect]
 149   --enable-vda             enable VDA code
 150   --disable-vdpau          disable VDPAU code [autodetect]
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190   --enable-avisynth        enable reading of AviSynth script files [no]
 191   --disable-bzlib          disable bzlib [autodetect]
 192   --enable-fontconfig      enable fontconfig
 193   --enable-frei0r          enable frei0r video filtering
 194   --enable-gnutls          enable gnutls [no]
 195   --disable-iconv          disable iconv [autodetect]
 196   --enable-ladspa          enable LADSPA audio filtering
 197   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 198   --enable-libass          enable libass subtitles rendering [no]
 199   --enable-libbluray       enable BluRay reading using libbluray [no]
 200   --enable-libcaca         enable textual display using libcaca
 201   --enable-libcelt         enable CELT decoding via libcelt [no]
 202   --enable-libcdio         enable audio CD grabbing with libcdio
 203   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 204                            and libraw1394 [no]
 205   --enable-libfaac         enable AAC encoding via libfaac [no]
 206   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 207   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 208   --enable-libfreetype     enable libfreetype [no]
 209   --enable-libgme          enable Game Music Emu via libgme [no]
 210   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 211   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 212   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 213   --enable-libmodplug      enable ModPlug via libmodplug [no]
 214   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 215   --enable-libnut          enable NUT (de)muxing via libnut,
 216                            native (de)muxer exists [no]
 217   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 218   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 219   --enable-libopencv       enable video filtering via libopencv [no]
 220   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 221   --enable-libopus         enable Opus decoding via libopus [no]
 222   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 223   --enable-libquvi         enable quvi input via libquvi [no]
 224   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 225   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 226   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 227   --enable-libsoxr         enable Include libsoxr resampling [no]
 228   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 229   --enable-libssh          enable SFTP protocol via libssh [no]
 230   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 231   --enable-libtheora       enable Theora encoding via libtheora [no]
 232   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 233   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 234   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 235   --enable-libvidstab      enable video stabilization using vid.stab [no]
 236   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 237   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 238   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 239                            native implementation exists [no]
 240   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 241   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 242   --enable-libx264         enable H.264 encoding via x264 [no]
 243   --enable-libxavs         enable AVS encoding via xavs [no]
 244   --enable-libxvid         enable Xvid encoding via xvidcore,
 245                            native MPEG-4/Xvid encoder exists [no]
 246   --enable-libzmq          enable message passing via libzmq [no]
 247   --enable-libzvbi         enable teletext support via libzvbi [no]
 248   --enable-openal          enable OpenAL 1.1 capture support [no]
 249   --enable-opencl          enable OpenCL code
 250   --enable-openssl         enable openssl [no]
 251   --enable-x11grab         enable X11 grabbing [no]
 252   --disable-zlib           disable zlib [autodetect]
 253
 254 Advanced options (experts only):
 255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 256   --enable-cross-compile   assume a cross-compiler is used
 257   --sysroot=PATH           root of cross-build tree
 258   --sysinclude=PATH        location of cross-build system headers
 259   --target-os=OS           compiler targets OS [$target_os]
 260   --target-exec=CMD        command to run executables on target
 261   --target-path=DIR        path to view of build directory on target
 262   --target-samples=DIR     path to samples directory on target
 263   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 264   --toolchain=NAME         set tool defaults according to NAME
 265   --nm=NM                  use nm tool NM [$nm_default]
 266   --ar=AR                  use archive tool AR [$ar_default]
 267   --as=AS                  use assembler AS [$as_default]
 268   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --cxx=CXX                use C compiler CXX [$cxx_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD [$ld_default]
 273   --host-cc=HOSTCC         use host C compiler HOSTCC
 274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 276   --host-ld=HOSTLD         use host linker HOSTLD
 277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 278   --host-libs=HLIBS        use libs HLIBS when linking for host
 279   --host-os=OS             compiler host OS [$target_os]
 280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 281   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 284   --extra-version=STRING   version string suffix []
 285   --optflags=OPTFLAGS      override optimization-related compiler flags
 286   --build-suffix=SUFFIX    library name suffix []
 287   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 288   --progs-suffix=SUFFIX    program name suffix []
 289   --arch=ARCH              select architecture [$arch]
 290   --cpu=CPU                select the minimum required CPU (affects
 291                            instruction selection, may crash on older CPUs)
 292   --enable-pic             build position-independent code
 293   --enable-sram            allow use of on-chip SRAM
 294   --enable-thumb           compile for Thumb instruction set
 295   --disable-symver         disable symbol versioning
 296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 297   --disable-safe-bitstream-reader
 298                            disable buffer boundary checking in bitreaders
 299                            (faster, but may crash)
 300   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 301   --enable-lto             use link-time optimization
 302
 303 Optimization options (experts only):
 304   --disable-asm            disable all assembler optimizations
 305   --disable-altivec        disable AltiVec optimizations
 306   --disable-amd3dnow       disable 3DNow! optimizations
 307   --disable-amd3dnowext    disable 3DNow! extended optimizations
 308   --disable-mmx            disable MMX optimizations
 309   --disable-mmxext         disable MMXEXT optimizations
 310   --disable-sse            disable SSE optimizations
 311   --disable-sse2           disable SSE2 optimizations
 312   --disable-sse3           disable SSE3 optimizations
 313   --disable-ssse3          disable SSSE3 optimizations
 314   --disable-sse4           disable SSE4 optimizations
 315   --disable-sse42          disable SSE4.2 optimizations
 316   --disable-avx            disable AVX optimizations
 317   --disable-fma4           disable FMA4 optimizations
 318   --disable-avx2           disable AVX2 optimizations
 319   --disable-armv5te        disable armv5te optimizations
 320   --disable-armv6          disable armv6 optimizations
 321   --disable-armv6t2        disable armv6t2 optimizations
 322   --disable-vfp            disable VFP optimizations
 323   --disable-neon           disable NEON optimizations
 324   --disable-vis            disable VIS optimizations
 325   --disable-inline-asm     disable use of inline assembler
 326   --disable-yasm           disable use of yasm assembler
 327   --disable-mips32r2       disable MIPS32R2 optimizations
 328   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 329   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 330   --disable-mipsfpu        disable floating point MIPS optimizations
 331   --disable-fast-unaligned consider unaligned accesses slow
 332
 333 Developer options (useful when working on FFmpeg itself):
 334   --disable-debug          disable debugging symbols
 335   --enable-debug=LEVEL     set the debug level [$debuglevel]
 336   --disable-optimizations  disable compiler optimizations
 337   --enable-extra-warnings  enable more compiler warnings
 338   --disable-stripping      disable stripping of executables and shared libraries
 339   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 340                            2 causes a slowdown at runtime.
 341   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 342   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 343                            leaks and errors, using the specified valgrind binary.
 344                            Cannot be combined with --target-exec
 345   --enable-ftrapv          Trap arithmetic overflows
 346   --samples=PATH           location of test samples for FATE, if not set use
 347                            \$FATE_SAMPLES at make invocation time.
 348   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 349                            should be used only for debugging purposes)
 350   --enable-random          randomly enable/disable components
 351   --disable-random
 352   --enable-random=LIST     randomly enable/disable specific components or
 353   --disable-random=LIST    component groups. LIST is a comma-separated list
 354                            of NAME[:PROB] entries where NAME is a component
 355                            (group) and PROB the probability associated with
 356                            NAME (default 0.5).
 357   --random-seed=VALUE      seed value for --enable/disable-random
 358
 359 NOTE: Object files are built at the place where configure is launched.
 360 EOF
 361   exit 0
 362 }
 363
 364 quotes='""'
 365
 366 log(){
 367     echo "$@" >> $logfile
 368 }
 369
 370 log_file(){
 371     log BEGIN $1
 372     pr -n -t $1 >> $logfile
 373     log END $1
 374 }
 375
 376 echolog(){
 377     log "$@"
 378     echo "$@"
 379 }
 380
 381 warn(){
 382     log "WARNING: $*"
 383     WARNINGS="${WARNINGS}WARNING: $*\n"
 384 }
 385
 386 die(){
 387     echolog "$@"
 388     cat <<EOF
 389
 390 If you think configure made a mistake, make sure you are using the latest
 391 version from Git.  If the latest version fails, report the problem to the
 392 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 393 EOF
 394     if disabled logging; then
 395         cat <<EOF
 396 Rerun configure with logging enabled (do not use --disable-logging), and
 397 include the log this produces with your report.
 398 EOF
 399     else
 400         cat <<EOF
 401 Include the log file "$logfile" produced by configure as this will help
 402 solving the problem.
 403 EOF
 404     fi
 405     exit 1
 406 }
 407
 408 # Avoid locale weirdness, besides we really just want to translate ASCII.
 409 toupper(){
 410     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 411 }
 412
 413 tolower(){
 414     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 415 }
 416
 417 c_escape(){
 418     echo "$*" | sed 's/["\\]/\\\0/g'
 419 }
 420
 421 sh_quote(){
 422     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 423     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 424     echo "$v"
 425 }
 426
 427 cleanws(){
 428     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 429 }
 430
 431 filter(){
 432     pat=$1
 433     shift
 434     for v; do
 435         eval "case $v in $pat) echo $v ;; esac"
 436     done
 437 }
 438
 439 filter_out(){
 440     pat=$1
 441     shift
 442     for v; do
 443         eval "case $v in $pat) ;; *) echo $v ;; esac"
 444     done
 445 }
 446
 447 map(){
 448     m=$1
 449     shift
 450     for v; do eval $m; done
 451 }
 452
 453 add_suffix(){
 454     suffix=$1
 455     shift
 456     for v; do echo ${v}${suffix}; done
 457 }
 458
 459 set_all(){
 460     value=$1
 461     shift
 462     for var in $*; do
 463         eval $var=$value
 464     done
 465 }
 466
 467 set_weak(){
 468     value=$1
 469     shift
 470     for var; do
 471         eval : \${$var:=$value}
 472     done
 473 }
 474
 475 sanitize_var_name(){
 476     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 477 }
 478
 479 set_safe(){
 480     var=$1
 481     shift
 482     eval $(sanitize_var_name "$var")='$*'
 483 }
 484
 485 get_safe(){
 486     eval echo \$$(sanitize_var_name "$1")
 487 }
 488
 489 pushvar(){
 490     for pvar in $*; do
 491         eval level=\${${pvar}_level:=0}
 492         eval ${pvar}_${level}="\$$pvar"
 493         eval ${pvar}_level=$(($level+1))
 494     done
 495 }
 496
 497 popvar(){
 498     for pvar in $*; do
 499         eval level=\${${pvar}_level:-0}
 500         test $level = 0 && continue
 501         eval level=$(($level-1))
 502         eval $pvar="\${${pvar}_${level}}"
 503         eval ${pvar}_level=$level
 504         eval unset ${pvar}_${level}
 505     done
 506 }
 507
 508 enable(){
 509     set_all yes $*
 510 }
 511
 512 disable(){
 513     set_all no $*
 514 }
 515
 516 enable_weak(){
 517     set_weak yes $*
 518 }
 519
 520 disable_weak(){
 521     set_weak no $*
 522 }
 523
 524 enable_safe(){
 525     for var; do
 526         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 527     done
 528 }
 529
 530 disable_safe(){
 531     for var; do
 532         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 533     done
 534 }
 535
 536 do_enable_deep(){
 537     for var; do
 538         enabled $var && continue
 539         eval sel="\$${var}_select"
 540         eval sgs="\$${var}_suggest"
 541         pushvar var sgs
 542         enable_deep $sel
 543         popvar sgs
 544         enable_deep_weak $sgs
 545         popvar var
 546     done
 547 }
 548
 549 enable_deep(){
 550     do_enable_deep $*
 551     enable $*
 552 }
 553
 554 enable_deep_weak(){
 555     for var; do
 556         disabled $var && continue
 557         pushvar var
 558         do_enable_deep $var
 559         popvar var
 560         enable_weak $var
 561     done
 562 }
 563
 564 enabled(){
 565     test "${1#!}" = "$1" && op== || op=!=
 566     eval test "x\$${1#!}" $op "xyes"
 567 }
 568
 569 disabled(){
 570     test "${1#!}" = "$1" && op== || op=!=
 571     eval test "x\$${1#!}" $op "xno"
 572 }
 573
 574 enabled_all(){
 575     for opt; do
 576         enabled $opt || return 1
 577     done
 578 }
 579
 580 disabled_all(){
 581     for opt; do
 582         disabled $opt || return 1
 583     done
 584 }
 585
 586 enabled_any(){
 587     for opt; do
 588         enabled $opt && return 0
 589     done
 590 }
 591
 592 disabled_any(){
 593     for opt; do
 594         disabled $opt && return 0
 595     done
 596     return 1
 597 }
 598
 599 set_default(){
 600     for opt; do
 601         eval : \${$opt:=\$${opt}_default}
 602     done
 603 }
 604
 605 is_in(){
 606     value=$1
 607     shift
 608     for var in $*; do
 609         [ $var = $value ] && return 0
 610     done
 611     return 1
 612 }
 613
 614 do_check_deps(){
 615     for cfg; do
 616         cfg="${cfg#!}"
 617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 618         disabled ${cfg}_checking && continue
 619         enable ${cfg}_checking
 620         append allopts $cfg
 621
 622         eval dep_all="\$${cfg}_deps"
 623         eval dep_any="\$${cfg}_deps_any"
 624         eval dep_sel="\$${cfg}_select"
 625         eval dep_sgs="\$${cfg}_suggest"
 626         eval dep_ifa="\$${cfg}_if"
 627         eval dep_ifn="\$${cfg}_if_any"
 628
 629         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 630         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 631         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 632
 633         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 634         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 635         enabled_all  $dep_all || disable $cfg
 636         enabled_any  $dep_any || disable $cfg
 637         disabled_any $dep_sel && disable $cfg
 638
 639         if enabled $cfg; then
 640             enable_deep $dep_sel
 641             enable_deep_weak $dep_sgs
 642         fi
 643
 644         disable ${cfg}_checking
 645     done
 646 }
 647
 648 check_deps(){
 649     unset allopts
 650
 651     do_check_deps "$@"
 652
 653     for cfg in $allopts; do
 654         enabled $cfg || continue
 655         eval dep_extralibs="\$${cfg}_extralibs"
 656         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 657     done
 658 }
 659
 660 print_config(){
 661     pfx=$1
 662     files=$2
 663     shift 2
 664     map 'eval echo "$v \${$v:-no}"' "$@" |
 665     awk "BEGIN { split(\"$files\", files) }
 666         {
 667             c = \"$pfx\" toupper(\$1);
 668             v = \$2;
 669             sub(/yes/, 1, v);
 670             sub(/no/,  0, v);
 671             for (f in files) {
 672                 file = files[f];
 673                 if (file ~ /\\.h\$/) {
 674                     printf(\"#define %s %d\\n\", c, v) >>file;
 675                 } else if (file ~ /\\.asm\$/) {
 676                     printf(\"%%define %s %d\\n\", c, v) >>file;
 677                 } else if (file ~ /\\.mak\$/) {
 678                     n = -v ? \"\" : \"!\";
 679                     printf(\"%s%s=yes\\n\", n, c) >>file;
 680                 } else if (file ~ /\\.texi\$/) {
 681                     pre = -v ? \"\" : \"@c \";
 682                     yesno = \$2;
 683                     c2 = tolower(c);
 684                     gsub(/_/, \"-\", c2);
 685                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 686                 }
 687             }
 688         }"
 689 }
 690
 691 print_enabled(){
 692     suf=$1
 693     shift
 694     for v; do
 695         enabled $v && printf "%s\n" ${v%$suf};
 696     done
 697 }
 698
 699 append(){
 700     var=$1
 701     shift
 702     eval "$var=\"\$$var $*\""
 703 }
 704
 705 prepend(){
 706     var=$1
 707     shift
 708     eval "$var=\"$* \$$var\""
 709 }
 710
 711 add_cppflags(){
 712     append CPPFLAGS "$@"
 713 }
 714
 715 add_cflags(){
 716     append CFLAGS $($cflags_filter "$@")
 717 }
 718
 719 add_cxxflags(){
 720     append CXXFLAGS $($cflags_filter "$@")
 721 }
 722
 723 add_asflags(){
 724     append ASFLAGS $($asflags_filter "$@")
 725 }
 726
 727 add_ldflags(){
 728     append LDFLAGS $($ldflags_filter "$@")
 729 }
 730
 731 add_extralibs(){
 732     prepend extralibs $($ldflags_filter "$@")
 733 }
 734
 735 add_host_cppflags(){
 736     append host_cppflags "$@"
 737 }
 738
 739 add_host_cflags(){
 740     append host_cflags $($host_cflags_filter "$@")
 741 }
 742
 743 add_host_ldflags(){
 744     append host_ldflags $($host_ldflags_filter "$@")
 745 }
 746
 747 add_compat(){
 748     append compat_objs $1
 749     shift
 750     map 'add_cppflags -D$v' "$@"
 751 }
 752
 753 check_cmd(){
 754     log "$@"
 755     "$@" >> $logfile 2>&1
 756 }
 757
 758 cc_o(){
 759     eval printf '%s\\n' $CC_O
 760 }
 761
 762 cc_e(){
 763     eval printf '%s\\n' $CC_E
 764 }
 765
 766 check_cc(){
 767     log check_cc "$@"
 768     cat > $TMPC
 769     log_file $TMPC
 770     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 771 }
 772
 773 check_cxx(){
 774     log check_cxx "$@"
 775     cat > $TMPCPP
 776     log_file $TMPCPP
 777     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 778 }
 779
 780 check_cpp(){
 781     log check_cpp "$@"
 782     cat > $TMPC
 783     log_file $TMPC
 784     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 785 }
 786
 787 as_o(){
 788     eval printf '%s\\n' $AS_O
 789 }
 790
 791 check_as(){
 792     log check_as "$@"
 793     cat > $TMPS
 794     log_file $TMPS
 795     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 796 }
 797
 798 check_inline_asm(){
 799     log check_inline_asm "$@"
 800     name="$1"
 801     code="$2"
 802     shift 2
 803     disable $name
 804     check_cc "$@" <<EOF && enable $name
 805 void foo(void){ __asm__ volatile($code); }
 806 EOF
 807 }
 808
 809 check_insn(){
 810     log check_insn "$@"
 811     check_inline_asm ${1}_inline "\"$2\""
 812     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 813 }
 814
 815 check_yasm(){
 816     log check_yasm "$@"
 817     echo "$1" > $TMPS
 818     log_file $TMPS
 819     shift 1
 820     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 821 }
 822
 823 ld_o(){
 824     eval printf '%s\\n' $LD_O
 825 }
 826
 827 check_ld(){
 828     log check_ld "$@"
 829     type=$1
 830     shift 1
 831     flags=$(filter_out '-l*|*.so' $@)
 832     libs=$(filter '-l*|*.so' $@)
 833     check_$type $($cflags_filter $flags) || return
 834     flags=$($ldflags_filter $flags)
 835     libs=$($ldflags_filter $libs)
 836     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 837 }
 838
 839 check_code(){
 840     log check_code "$@"
 841     check=$1
 842     headers=$2
 843     code=$3
 844     shift 3
 845     {
 846         for hdr in $headers; do
 847             echo "#include <$hdr>"
 848         done
 849         echo "int main(void) { $code; return 0; }"
 850     } | check_$check "$@"
 851 }
 852
 853 check_cppflags(){
 854     log check_cppflags "$@"
 855     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 856 int x;
 857 EOF
 858 }
 859
 860 check_cflags(){
 861     log check_cflags "$@"
 862     set -- $($cflags_filter "$@")
 863     check_cc "$@" <<EOF && append CFLAGS "$@"
 864 int x;
 865 EOF
 866 }
 867
 868 check_cxxflags(){
 869     log check_cxxflags "$@"
 870     set -- $($cflags_filter "$@")
 871     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 872 int x;
 873 EOF
 874 }
 875
 876 test_ldflags(){
 877     log test_ldflags "$@"
 878     check_ld "cc" "$@" <<EOF
 879 int main(void){ return 0; }
 880 EOF
 881 }
 882
 883 check_ldflags(){
 884     log check_ldflags "$@"
 885     test_ldflags "$@" && add_ldflags "$@"
 886 }
 887
 888 check_header(){
 889     log check_header "$@"
 890     header=$1
 891     shift
 892     disable_safe $header
 893     check_cpp "$@" <<EOF && enable_safe $header
 894 #include <$header>
 895 int x;
 896 EOF
 897 }
 898
 899 check_func(){
 900     log check_func "$@"
 901     func=$1
 902     shift
 903     disable $func
 904     check_ld "cc" "$@" <<EOF && enable $func
 905 extern int $func();
 906 int main(void){ $func(); }
 907 EOF
 908 }
 909
 910 check_mathfunc(){
 911     log check_mathfunc "$@"
 912     func=$1
 913     narg=$2
 914     shift 2
 915     test $narg = 2 && args="f, g" || args="f"
 916     disable $func
 917     check_ld "cc" "$@" <<EOF && enable $func
 918 #include <math.h>
 919 float foo(float f, float g) { return $func($args); }
 920 int main(void){ return (int) foo; }
 921 EOF
 922 }
 923
 924 check_func_headers(){
 925     log check_func_headers "$@"
 926     headers=$1
 927     funcs=$2
 928     shift 2
 929     {
 930         for hdr in $headers; do
 931             echo "#include <$hdr>"
 932         done
 933         for func in $funcs; do
 934             echo "long check_$func(void) { return (long) $func; }"
 935         done
 936         echo "int main(void) { return 0; }"
 937     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 938 }
 939
 940 check_class_headers_cpp(){
 941     log check_class_headers_cpp "$@"
 942     headers=$1
 943     classes=$2
 944     shift 2
 945     {
 946         for hdr in $headers; do
 947             echo "#include <$hdr>"
 948         done
 949         echo "int main(void) { "
 950         i=1
 951         for class in $classes; do
 952             echo "$class obj$i;"
 953             i=$(expr $i + 1)
 954         done
 955         echo "return 0; }"
 956     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 957 }
 958
 959 check_cpp_condition(){
 960     log check_cpp_condition "$@"
 961     header=$1
 962     condition=$2
 963     shift 2
 964     check_cpp "$@" <<EOF
 965 #include <$header>
 966 #if !($condition)
 967 #error "unsatisfied condition: $condition"
 968 #endif
 969 EOF
 970 }
 971
 972 check_lib(){
 973     log check_lib "$@"
 974     header="$1"
 975     func="$2"
 976     shift 2
 977     check_header $header && check_func $func "$@" && add_extralibs "$@"
 978 }
 979
 980 check_lib2(){
 981     log check_lib2 "$@"
 982     headers="$1"
 983     funcs="$2"
 984     shift 2
 985     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 986 }
 987
 988 check_lib_cpp(){
 989     log check_lib_cpp "$@"
 990     headers="$1"
 991     classes="$2"
 992     shift 2
 993     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 994 }
 995
 996 check_pkg_config(){
 997     log check_pkg_config "$@"
 998     pkg="$1"
 999     headers="$2"
1000     funcs="$3"
1001     shift 3
1002     check_cmd $pkg_config --exists --print-errors $pkg || return
1003     pkg_cflags=$($pkg_config --cflags $pkg)
1004     pkg_libs=$($pkg_config --libs $pkg)
1005     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1006         set_safe ${pkg}_cflags $pkg_cflags   &&
1007         set_safe ${pkg}_libs   $pkg_libs
1008 }
1009
1010 check_exec(){
1011     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1012 }
1013
1014 check_exec_crash(){
1015     code=$(cat)
1016
1017     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1018     # are safe but may not be available everywhere.  Thus we use
1019     # raise(SIGTERM) instead.  The check is run in a subshell so we
1020     # can redirect the "Terminated" message from the shell.  SIGBUS
1021     # is not defined by standard C so it is used conditionally.
1022
1023     (check_exec "$@") >> $logfile 2>&1 <<EOF
1024 #include <signal.h>
1025 static void sighandler(int sig){
1026     raise(SIGTERM);
1027 }
1028 int foo(void){
1029     $code
1030 }
1031 int (*func_ptr)(void) = foo;
1032 int main(void){
1033     signal(SIGILL, sighandler);
1034     signal(SIGFPE, sighandler);
1035     signal(SIGSEGV, sighandler);
1036 #ifdef SIGBUS
1037     signal(SIGBUS, sighandler);
1038 #endif
1039     return func_ptr();
1040 }
1041 EOF
1042 }
1043
1044 check_type(){
1045     log check_type "$@"
1046     headers=$1
1047     type=$2
1048     shift 2
1049     disable_safe "$type"
1050     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1051 }
1052
1053 check_struct(){
1054     log check_struct "$@"
1055     headers=$1
1056     struct=$2
1057     member=$3
1058     shift 3
1059     disable_safe "${struct}_${member}"
1060     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1061         enable_safe "${struct}_${member}"
1062 }
1063
1064 check_builtin(){
1065     log check_builtin "$@"
1066     name=$1
1067     headers=$2
1068     builtin=$3
1069     shift 3
1070     disable "$name"
1071     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1072 }
1073
1074 require(){
1075     name="$1"
1076     header="$2"
1077     func="$3"
1078     shift 3
1079     check_lib $header $func "$@" || die "ERROR: $name not found"
1080 }
1081
1082 require2(){
1083     name="$1"
1084     headers="$2"
1085     func="$3"
1086     shift 3
1087     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1088 }
1089
1090 require_cpp(){
1091     name="$1"
1092     headers="$2"
1093     classes="$3"
1094     shift 3
1095     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1096 }
1097
1098 require_pkg_config(){
1099     pkg="$1"
1100     check_pkg_config "$@" || die "ERROR: $pkg not found"
1101     add_cflags    $(get_safe ${pkg}_cflags)
1102     add_extralibs $(get_safe ${pkg}_libs)
1103 }
1104
1105 hostcc_o(){
1106     eval printf '%s\\n' $HOSTCC_O
1107 }
1108
1109 check_host_cc(){
1110     log check_host_cc "$@"
1111     cat > $TMPC
1112     log_file $TMPC
1113     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1114 }
1115
1116 check_host_cppflags(){
1117     log check_host_cppflags "$@"
1118     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1119 int x;
1120 EOF
1121 }
1122
1123 check_host_cflags(){
1124     log check_host_cflags "$@"
1125     set -- $($host_cflags_filter "$@")
1126     check_host_cc "$@" <<EOF && append host_cflags "$@"
1127 int x;
1128 EOF
1129 }
1130
1131 apply(){
1132     file=$1
1133     shift
1134     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1135 }
1136
1137 cp_if_changed(){
1138     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1139     mkdir -p "$(dirname $2)"
1140     $cp_f "$1" "$2"
1141 }
1142
1143 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1144 # system-dependent things.
1145
1146 COMPONENT_LIST="
1147     bsfs
1148     decoders
1149     demuxers
1150     encoders
1151     filters
1152     hwaccels
1153     indevs
1154     muxers
1155     outdevs
1156     parsers
1157     protocols
1158 "
1159
1160 EXTERNAL_LIBRARY_LIST="
1161     avisynth
1162     bzlib
1163     crystalhd
1164     fontconfig
1165     frei0r
1166     gnutls
1167     iconv
1168     ladspa
1169     libaacplus
1170     libass
1171     libbluray
1172     libcaca
1173     libcdio
1174     libcelt
1175     libdc1394
1176     libfaac
1177     libfdk_aac
1178     libflite
1179     libfreetype
1180     libgme
1181     libgsm
1182     libiec61883
1183     libilbc
1184     libmodplug
1185     libmp3lame
1186     libnut
1187     libopencore_amrnb
1188     libopencore_amrwb
1189     libopencv
1190     libopenjpeg
1191     libopus
1192     libpulse
1193     libquvi
1194     librtmp
1195     libschroedinger
1196     libshine
1197     libsoxr
1198     libspeex
1199     libssh
1200     libstagefright_h264
1201     libtheora
1202     libtwolame
1203     libutvideo
1204     libv4l2
1205     libvidstab
1206     libvo_aacenc
1207     libvo_amrwbenc
1208     libvorbis
1209     libvpx
1210     libwavpack
1211     libx264
1212     libxavs
1213     libxvid
1214     libzmq
1215     libzvbi
1216     openal
1217     opencl
1218     openssl
1219     x11grab
1220     zlib
1221 "
1222
1223 DOCUMENT_LIST="
1224     doc
1225     htmlpages
1226     manpages
1227     podpages
1228     txtpages
1229 "
1230
1231 HWACCEL_LIST="
1232     dxva2
1233     vaapi
1234     vda
1235     vdpau
1236 "
1237
1238 LIBRARY_LIST="
1239     avcodec
1240     avdevice
1241     avfilter
1242     avformat
1243     avresample
1244     avutil
1245     postproc
1246     swresample
1247     swscale
1248 "
1249
1250 PROGRAM_LIST="
1251     ffplay
1252     ffprobe
1253     ffserver
1254     ffmpeg
1255 "
1256
1257 CONFIG_LIST="
1258     $COMPONENT_LIST
1259     $DOCUMENT_LIST
1260     $EXTERNAL_LIBRARY_LIST
1261     $HWACCEL_LIST
1262     $LIBRARY_LIST
1263     $PROGRAM_LIST
1264     dct
1265     dwt
1266     error_resilience
1267     fast_unaligned
1268     fft
1269     ftrapv
1270     gpl
1271     gray
1272     hardcoded_tables
1273     incompatible_libav_abi
1274     incompatible_fork_abi
1275     lsp
1276     lzo
1277     mdct
1278     memalign_hack
1279     memory_poisoning
1280     network
1281     nonfree
1282     pic
1283     rdft
1284     runtime_cpudetect
1285     safe_bitstream_reader
1286     shared
1287     small
1288     sram
1289     static
1290     swscale_alpha
1291     thumb
1292     version3
1293     xmm_clobber_test
1294 "
1295
1296 THREADS_LIST='
1297     pthreads
1298     w32threads
1299     os2threads
1300 '
1301
1302 ATOMICS_LIST='
1303     atomics_gcc
1304     atomics_suncc
1305     atomics_win32
1306 '
1307
1308 ARCH_LIST='
1309     aarch64
1310     alpha
1311     arm
1312     avr32
1313     avr32_ap
1314     avr32_uc
1315     bfin
1316     ia64
1317     m68k
1318     mips
1319     mips64
1320     parisc
1321     ppc
1322     ppc64
1323     s390
1324     sh4
1325     sparc
1326     sparc64
1327     tilegx
1328     tilepro
1329     tomi
1330     x86
1331     x86_32
1332     x86_64
1333 '
1334
1335 ARCH_EXT_LIST_ARM='
1336     armv5te
1337     armv6
1338     armv6t2
1339     neon
1340     vfp
1341     vfpv3
1342 '
1343
1344 ARCH_EXT_LIST_X86='
1345     amd3dnow
1346     amd3dnowext
1347     avx
1348     avx2
1349     fma4
1350     i686
1351     mmx
1352     mmxext
1353     sse
1354     sse2
1355     sse3
1356     sse4
1357     sse42
1358     ssse3
1359 '
1360
1361 ARCH_EXT_LIST="
1362     $ARCH_EXT_LIST_ARM
1363     $ARCH_EXT_LIST_X86
1364     altivec
1365     ppc4xx
1366     vis
1367     mipsfpu
1368     mips32r2
1369     mipsdspr1
1370     mipsdspr2
1371 "
1372
1373 HAVE_LIST_CMDLINE='
1374     inline_asm
1375     symver
1376     yasm
1377 '
1378
1379 HAVE_LIST_PUB='
1380     bigendian
1381     fast_unaligned
1382     incompatible_libav_abi
1383     incompatible_fork_abi
1384 '
1385
1386 MATH_FUNCS="
1387     atanf
1388     atan2f
1389     cbrt
1390     cbrtf
1391     cosf
1392     exp2
1393     exp2f
1394     expf
1395     isinf
1396     isnan
1397     ldexpf
1398     llrint
1399     llrintf
1400     log2
1401     log2f
1402     log10f
1403     lrint
1404     lrintf
1405     powf
1406     rint
1407     round
1408     roundf
1409     sinf
1410     trunc
1411     truncf
1412 "
1413
1414 HAVE_LIST="
1415     $ARCH_EXT_LIST
1416     $(add_suffix _external $ARCH_EXT_LIST)
1417     $(add_suffix _inline   $ARCH_EXT_LIST)
1418     $HAVE_LIST_CMDLINE
1419     $HAVE_LIST_PUB
1420     $THREADS_LIST
1421     $ATOMICS_LIST
1422     $MATH_FUNCS
1423     access
1424     aligned_malloc
1425     aligned_stack
1426     alsa_asoundlib_h
1427     altivec_h
1428     arpa_inet_h
1429     asm_mod_q
1430     asm_mod_y
1431     asm_types_h
1432     atomic_cas_ptr
1433     atomics_native
1434     attribute_may_alias
1435     attribute_packed
1436     cdio_paranoia_h
1437     cdio_paranoia_paranoia_h
1438     CL_cl_h
1439     clock_gettime
1440     closesocket
1441     CommandLineToArgvW
1442     cpunop
1443     CryptGenRandom
1444     dcbzl
1445     dev_bktr_ioctl_bt848_h
1446     dev_bktr_ioctl_meteor_h
1447     dev_ic_bt8xx_h
1448     dev_video_bktr_ioctl_bt848_h
1449     dev_video_meteor_ioctl_meteor_h
1450     direct_h
1451     dlfcn_h
1452     dlopen
1453     dos_paths
1454     dxva_h
1455     ebp_available
1456     ebx_available
1457     fast_64bit
1458     fast_clz
1459     fast_cmov
1460     fcntl
1461     fork
1462     getaddrinfo
1463     gethrtime
1464     getopt
1465     GetProcessAffinityMask
1466     GetProcessMemoryInfo
1467     GetProcessTimes
1468     GetSystemTimeAsFileTime
1469     getrusage
1470     getservbyport
1471     gettimeofday
1472     glob
1473     gnu_as
1474     gsm_h
1475     ibm_asm
1476     inet_aton
1477     io_h
1478     inline_asm_labels
1479     isatty
1480     jack_port_get_latency_range
1481     kbhit
1482     ldbrx
1483     libdc1394_1
1484     libdc1394_2
1485     local_aligned_16
1486     local_aligned_8
1487     localtime_r
1488     loongson
1489     lzo1x_999_compress
1490     machine_ioctl_bt848_h
1491     machine_ioctl_meteor_h
1492     machine_rw_barrier
1493     makeinfo
1494     malloc_h
1495     MapViewOfFile
1496     memalign
1497     MemoryBarrier
1498     mkstemp
1499     mm_empty
1500     mmap
1501     mprotect
1502     msvcrt
1503     nanosleep
1504     openjpeg_1_5_openjpeg_h
1505     PeekNamedPipe
1506     perl
1507     pod2man
1508     poll_h
1509     posix_memalign
1510     pragma_deprecated
1511     pthread_cancel
1512     rdtsc
1513     rsync_contimeout
1514     sarestart
1515     sched_getaffinity
1516     sdl
1517     SetConsoleTextAttribute
1518     setmode
1519     setrlimit
1520     Sleep
1521     sndio_h
1522     socklen_t
1523     soundcard_h
1524     strerror_r
1525     struct_addrinfo
1526     struct_group_source_req
1527     struct_ip_mreq_source
1528     struct_ipv6_mreq
1529     struct_pollfd
1530     struct_rusage_ru_maxrss
1531     struct_sctp_event_subscribe
1532     struct_sockaddr_in6
1533     struct_sockaddr_sa_len
1534     struct_sockaddr_storage
1535     struct_stat_st_mtim_tv_nsec
1536     struct_v4l2_frmivalenum_discrete
1537     symver_asm_label
1538     symver_gnu_asm
1539     sync_val_compare_and_swap
1540     sysconf
1541     sysctl
1542     sys_mman_h
1543     sys_param_h
1544     sys_resource_h
1545     sys_select_h
1546     sys_soundcard_h
1547     sys_time_h
1548     sys_un_h
1549     sys_videoio_h
1550     termios_h
1551     texi2html
1552     threads
1553     unistd_h
1554     usleep
1555     vfp_args
1556     VirtualAlloc
1557     windows_h
1558     winsock2_h
1559     xform_asm
1560     xmm_clobbers
1561 "
1562
1563 # options emitted with CONFIG_ prefix but not available on the command line
1564 CONFIG_EXTRA="
1565     aandcttables
1566     ac3dsp
1567     audio_frame_queue
1568     dsputil
1569     exif
1570     frame_thread_encoder
1571     gcrypt
1572     golomb
1573     gplv3
1574     h264chroma
1575     h264dsp
1576     h264pred
1577     h264qpel
1578     hpeldsp
1579     huffman
1580     lgplv3
1581     lpc
1582     mpegaudio
1583     mpegaudiodsp
1584     mpegvideo
1585     mpegvideoenc
1586     nettle
1587     rangecoder
1588     riffdec
1589     riffenc
1590     rtpdec
1591     rtpenc_chain
1592     sinewin
1593     videodsp
1594     vp3dsp
1595 "
1596
1597 CMDLINE_SELECT="
1598     $ARCH_EXT_LIST
1599     $CONFIG_LIST
1600     $HAVE_LIST_CMDLINE
1601     $THREADS_LIST
1602     asm
1603     cross_compile
1604     debug
1605     extra_warnings
1606     logging
1607     lto
1608     optimizations
1609     stripping
1610 "
1611
1612 PATHS_LIST='
1613     bindir
1614     datadir
1615     docdir
1616     incdir
1617     libdir
1618     mandir
1619     prefix
1620     shlibdir
1621 '
1622
1623 CMDLINE_SET="
1624     $PATHS_LIST
1625     ar
1626     arch
1627     as
1628     assert_level
1629     build_suffix
1630     cc
1631     cpu
1632     cross_prefix
1633     cxx
1634     dep_cc
1635     extra_version
1636     host_cc
1637     host_cflags
1638     host_ld
1639     host_ldflags
1640     host_libs
1641     host_os
1642     install
1643     ld
1644     logfile
1645     malloc_prefix
1646     nm
1647     optflags
1648     pkg_config
1649     progs_suffix
1650     random_seed
1651     samples
1652     strip
1653     sysinclude
1654     sysroot
1655     target_exec
1656     target_os
1657     target_path
1658     target_samples
1659     tempprefix
1660     toolchain
1661     valgrind
1662     yasmexe
1663 "
1664
1665 CMDLINE_APPEND="
1666     extra_cflags
1667     extra_cxxflags
1668     host_cppflags
1669 "
1670
1671 # code dependency declarations
1672
1673 # architecture extensions
1674
1675 armv5te_deps="arm"
1676 armv6_deps="arm"
1677 armv6t2_deps="arm"
1678 neon_deps="arm"
1679 vfp_deps="arm"
1680 vfpv3_deps="vfp"
1681
1682 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1683
1684 mipsfpu_deps="mips"
1685 mips32r2_deps="mips"
1686 mipsdspr1_deps="mips"
1687 mipsdspr2_deps="mips"
1688
1689 altivec_deps="ppc"
1690 ppc4xx_deps="ppc"
1691
1692 vis_deps="sparc"
1693
1694 cpunop_deps="i686"
1695 x86_64_select="i686"
1696 x86_64_suggest="fast_cmov"
1697
1698 amd3dnow_deps="mmx"
1699 amd3dnowext_deps="amd3dnow"
1700 mmx_deps="x86"
1701 mmxext_deps="mmx"
1702 sse_deps="mmxext"
1703 sse2_deps="sse"
1704 sse3_deps="sse2"
1705 ssse3_deps="sse3"
1706 sse4_deps="ssse3"
1707 sse42_deps="sse4"
1708 avx_deps="sse42"
1709 fma4_deps="avx"
1710 avx2_deps="avx"
1711
1712 mmx_external_deps="yasm"
1713 mmx_inline_deps="inline_asm"
1714 mmx_suggest="mmx_external mmx_inline"
1715
1716 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1717     eval dep=\$${ext}_deps
1718     eval ${ext}_external_deps='"${dep}_external"'
1719     eval ${ext}_inline_deps='"${dep}_inline"'
1720     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1721 done
1722
1723 aligned_stack_if_any="ppc x86"
1724 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1725 fast_clz_if_any="alpha avr32 mips ppc x86"
1726 fast_unaligned_if_any="ppc x86"
1727
1728 inline_asm_deps="!tms470"
1729 need_memalign="altivec neon sse"
1730
1731 symver_if_any="symver_asm_label symver_gnu_asm"
1732
1733 log2_deps="!msvcrt"
1734
1735 # subsystems
1736 dct_select="rdft"
1737 error_resilience_select="dsputil"
1738 frame_thread_encoder_deps="encoders threads"
1739 lpc_select="dsputil"
1740 mdct_select="fft"
1741 rdft_select="fft"
1742 mpegaudio_select="mpegaudiodsp"
1743 mpegaudiodsp_select="dct"
1744 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1745 mpegvideoenc_select="mpegvideo"
1746
1747 # decoders / encoders
1748 aac_decoder_select="mdct sinewin"
1749 aac_encoder_select="audio_frame_queue mdct sinewin"
1750 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1751 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1752 ac3_encoder_select="mdct ac3dsp dsputil"
1753 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1754 aic_decoder_select="dsputil golomb"
1755 alac_encoder_select="lpc"
1756 als_decoder_select="dsputil"
1757 amrnb_decoder_select="lsp"
1758 amrwb_decoder_select="lsp"
1759 amv_decoder_select="dsputil hpeldsp exif"
1760 amv_encoder_select="aandcttables"
1761 ape_decoder_select="dsputil"
1762 asv1_decoder_select="dsputil"
1763 asv1_encoder_select="dsputil"
1764 asv2_decoder_select="dsputil"
1765 asv2_encoder_select="dsputil"
1766 atrac1_decoder_select="mdct sinewin"
1767 atrac3_decoder_select="mdct"
1768 avrn_decoder_select="exif"
1769 bink_decoder_select="dsputil hpeldsp"
1770 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1771 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1772 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1773 cllc_decoder_select="dsputil"
1774 comfortnoise_encoder_select="lpc"
1775 cook_decoder_select="dsputil mdct sinewin"
1776 cscd_decoder_select="lzo"
1777 cscd_decoder_suggest="zlib"
1778 dca_decoder_select="mdct"
1779 dirac_decoder_select="dsputil dwt golomb videodsp"
1780 dnxhd_decoder_select="dsputil"
1781 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1782 dvvideo_decoder_select="dsputil"
1783 dvvideo_encoder_select="dsputil"
1784 dxa_decoder_select="zlib"
1785 eac3_decoder_select="ac3_decoder"
1786 eac3_encoder_select="ac3_encoder"
1787 eamad_decoder_select="aandcttables dsputil mpegvideo"
1788 eatgq_decoder_select="aandcttables"
1789 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1790 exr_decoder_select="zlib"
1791 ffv1_decoder_select="dsputil golomb rangecoder"
1792 ffv1_encoder_select="dsputil rangecoder"
1793 ffvhuff_decoder_select="dsputil"
1794 ffvhuff_encoder_select="dsputil huffman"
1795 flac_decoder_select="golomb"
1796 flac_encoder_select="dsputil golomb lpc"
1797 flashsv_decoder_select="zlib"
1798 flashsv_encoder_select="zlib"
1799 flashsv2_encoder_select="zlib"
1800 flashsv2_decoder_select="zlib"
1801 flv_decoder_select="h263_decoder"
1802 flv_encoder_select="h263_encoder"
1803 fourxm_decoder_select="dsputil"
1804 fraps_decoder_select="dsputil huffman"
1805 g2m_decoder_select="dsputil zlib"
1806 g729_decoder_select="dsputil"
1807 h261_decoder_select="error_resilience mpegvideo"
1808 h261_encoder_select="aandcttables mpegvideoenc"
1809 h263_decoder_select="error_resilience h263_parser mpegvideo"
1810 h263_encoder_select="aandcttables mpegvideoenc"
1811 h263i_decoder_select="h263_decoder"
1812 h263p_encoder_select="h263_encoder"
1813 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1814 h264_decoder_suggest="error_resilience"
1815 hevc_decoder_select="dsputil golomb videodsp"
1816 huffyuv_decoder_select="dsputil"
1817 huffyuv_encoder_select="dsputil huffman"
1818 iac_decoder_select="dsputil fft mdct sinewin"
1819 imc_decoder_select="dsputil fft mdct sinewin"
1820 indeo3_decoder_select="hpeldsp"
1821 interplay_video_decoder_select="hpeldsp"
1822 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1823 jpegls_encoder_select="golomb"
1824 jv_decoder_select="dsputil"
1825 lagarith_decoder_select="dsputil"
1826 ljpeg_encoder_select="aandcttables mpegvideoenc"
1827 loco_decoder_select="golomb"
1828 mdec_decoder_select="dsputil error_resilience mpegvideo"
1829 metasound_decoder_select="lsp mdct sinewin"
1830 mimic_decoder_select="dsputil hpeldsp"
1831 mjpeg_decoder_select="dsputil hpeldsp exif"
1832 mjpegb_decoder_select="dsputil hpeldsp exif"
1833 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1834 mlp_decoder_select="dsputil mlp_parser"
1835 motionpixels_decoder_select="dsputil"
1836 mp1_decoder_select="mpegaudio"
1837 mp1float_decoder_select="mpegaudio"
1838 mp2_decoder_select="mpegaudio"
1839 mp2float_decoder_select="mpegaudio"
1840 mp3_decoder_select="mpegaudio"
1841 mp3adu_decoder_select="mpegaudio"
1842 mp3adufloat_decoder_select="mpegaudio"
1843 mp3float_decoder_select="mpegaudio"
1844 mp3on4_decoder_select="mpegaudio"
1845 mp3on4float_decoder_select="mpegaudio"
1846 mpc7_decoder_select="dsputil mpegaudiodsp"
1847 mpc8_decoder_select="dsputil mpegaudiodsp"
1848 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1849 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1850 mpeg1video_decoder_select="error_resilience mpegvideo"
1851 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1852 mpeg2video_decoder_select="error_resilience mpegvideo"
1853 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1854 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1855 mpeg4_encoder_select="h263_encoder"
1856 msmpeg4v1_decoder_select="h263_decoder"
1857 msmpeg4v2_decoder_select="h263_decoder"
1858 msmpeg4v2_encoder_select="h263_encoder"
1859 msmpeg4v3_decoder_select="h263_decoder"
1860 msmpeg4v3_encoder_select="h263_encoder"
1861 mss2_decoder_select="error_resilience vc1_decoder"
1862 mxpeg_decoder_select="dsputil hpeldsp exif"
1863 nellymoser_decoder_select="mdct sinewin"
1864 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1865 nuv_decoder_select="dsputil lzo"
1866 png_decoder_select="zlib"
1867 png_encoder_select="dsputil zlib"
1868 prores_decoder_select="dsputil"
1869 prores_encoder_select="dsputil"
1870 qcelp_decoder_select="lsp"
1871 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1872 ra_144_encoder_select="audio_frame_queue lpc"
1873 ralf_decoder_select="golomb"
1874 rtjpeg_decoder_select="dsputil"
1875 rv10_decoder_select="error_resilience h263_decoder"
1876 rv10_encoder_select="h263_encoder"
1877 rv20_decoder_select="error_resilience h263_decoder"
1878 rv20_encoder_select="h263_encoder"
1879 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1880 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1881 shorten_decoder_select="golomb"
1882 sipr_decoder_select="lsp"
1883 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1884 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1885 sonic_decoder_select="golomb"
1886 sonic_encoder_select="golomb"
1887 sonic_ls_encoder_select="golomb"
1888 sp5x_decoder_select="dsputil hpeldsp exif"
1889 svq1_decoder_select="hpeldsp"
1890 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1891 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1892 svq3_decoder_suggest="error_resilience zlib"
1893 tak_decoder_select="dsputil"
1894 theora_decoder_select="vp3_decoder"
1895 tiff_decoder_suggest="zlib"
1896 tiff_encoder_suggest="zlib"
1897 thp_decoder_select="dsputil hpeldsp exif"
1898 truehd_decoder_select="mlp_parser"
1899 truemotion2_decoder_select="dsputil"
1900 truespeech_decoder_select="dsputil"
1901 tscc_decoder_select="zlib"
1902 twinvq_decoder_select="mdct lsp sinewin"
1903 utvideo_decoder_select="dsputil"
1904 utvideo_encoder_select="dsputil huffman"
1905 vble_decoder_select="dsputil"
1906 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1907 vc1image_decoder_select="vc1_decoder"
1908 vorbis_decoder_select="mdct"
1909 vorbis_encoder_select="mdct"
1910 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1911 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1912 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1913 vp6a_decoder_select="vp6_decoder"
1914 vp6f_decoder_select="vp6_decoder"
1915 vp8_decoder_select="h264pred videodsp"
1916 vp9_decoder_select="videodsp"
1917 webp_decoder_select="vp8_decoder"
1918 wmapro_decoder_select="mdct sinewin"
1919 wmav1_decoder_select="mdct sinewin"
1920 wmav1_encoder_select="mdct sinewin"
1921 wmav2_decoder_select="mdct sinewin"
1922 wmav2_encoder_select="mdct sinewin"
1923 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1924 wmv1_decoder_select="h263_decoder"
1925 wmv1_encoder_select="h263_encoder"
1926 wmv2_decoder_select="h263_decoder videodsp"
1927 wmv2_encoder_select="h263_encoder"
1928 wmv3_decoder_select="vc1_decoder"
1929 wmv3image_decoder_select="wmv3_decoder"
1930 zerocodec_decoder_select="zlib"
1931 zlib_decoder_select="zlib"
1932 zlib_encoder_select="zlib"
1933 zmbv_decoder_select="zlib"
1934 zmbv_encoder_select="zlib"
1935
1936 # hardware accelerators
1937 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1938 dxva2_deps="dxva2api_h"
1939 vaapi_deps="va_va_h"
1940 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1941 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1942 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1943
1944 h263_vaapi_hwaccel_deps="vaapi"
1945 h263_vaapi_hwaccel_select="h263_decoder"
1946 h263_vdpau_hwaccel_deps="vdpau"
1947 h263_vdpau_hwaccel_select="h263_decoder"
1948 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1949 h264_dxva2_hwaccel_deps="dxva2"
1950 h264_dxva2_hwaccel_select="h264_decoder"
1951 h264_vaapi_hwaccel_deps="vaapi"
1952 h264_vaapi_hwaccel_select="h264_decoder"
1953 h264_vda_decoder_deps="vda"
1954 h264_vda_decoder_select="h264_decoder"
1955 h264_vda_hwaccel_deps="vda"
1956 h264_vda_hwaccel_select="h264_decoder"
1957 h264_vdpau_decoder_deps="vdpau"
1958 h264_vdpau_decoder_select="h264_decoder"
1959 h264_vdpau_hwaccel_deps="vdpau"
1960 h264_vdpau_hwaccel_select="h264_decoder"
1961 mpeg_vdpau_decoder_deps="vdpau"
1962 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1963 mpeg1_vdpau_decoder_deps="vdpau"
1964 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1965 mpeg1_vdpau_hwaccel_deps="vdpau"
1966 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1967 mpeg2_crystalhd_decoder_select="crystalhd"
1968 mpeg2_dxva2_hwaccel_deps="dxva2"
1969 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1970 mpeg2_vaapi_hwaccel_deps="vaapi"
1971 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1972 mpeg2_vdpau_hwaccel_deps="vdpau"
1973 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1974 mpeg4_crystalhd_decoder_select="crystalhd"
1975 mpeg4_vaapi_hwaccel_deps="vaapi"
1976 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1977 mpeg4_vdpau_decoder_deps="vdpau"
1978 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1979 mpeg4_vdpau_hwaccel_deps="vdpau"
1980 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1981 msmpeg4_crystalhd_decoder_select="crystalhd"
1982 vc1_crystalhd_decoder_select="crystalhd"
1983 vc1_dxva2_hwaccel_deps="dxva2"
1984 vc1_dxva2_hwaccel_select="vc1_decoder"
1985 vc1_vaapi_hwaccel_deps="vaapi"
1986 vc1_vaapi_hwaccel_select="vc1_decoder"
1987 vc1_vdpau_decoder_deps="vdpau"
1988 vc1_vdpau_decoder_select="vc1_decoder"
1989 vc1_vdpau_hwaccel_deps="vdpau"
1990 vc1_vdpau_hwaccel_select="vc1_decoder"
1991 wmv3_crystalhd_decoder_select="crystalhd"
1992 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1993 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1994 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1995 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1996
1997 # parsers
1998 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1999 mpeg4video_parser_select="error_resilience mpegvideo"
2000 mpegvideo_parser_select="error_resilience mpegvideo"
2001 vc1_parser_select="mpegvideo"
2002
2003 # external libraries
2004 libaacplus_encoder_deps="libaacplus"
2005 libcelt_decoder_deps="libcelt"
2006 libfaac_encoder_deps="libfaac"
2007 libfaac_encoder_select="audio_frame_queue"
2008 libfdk_aac_decoder_deps="libfdk_aac"
2009 libfdk_aac_encoder_deps="libfdk_aac"
2010 libfdk_aac_encoder_select="audio_frame_queue"
2011 libgme_demuxer_deps="libgme"
2012 libgsm_decoder_deps="libgsm"
2013 libgsm_encoder_deps="libgsm"
2014 libgsm_ms_decoder_deps="libgsm"
2015 libgsm_ms_encoder_deps="libgsm"
2016 libilbc_decoder_deps="libilbc"
2017 libilbc_encoder_deps="libilbc"
2018 libmodplug_demuxer_deps="libmodplug"
2019 libmp3lame_encoder_deps="libmp3lame"
2020 libmp3lame_encoder_select="audio_frame_queue"
2021 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2022 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2023 libopencore_amrnb_encoder_select="audio_frame_queue"
2024 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2025 libopenjpeg_decoder_deps="libopenjpeg"
2026 libopenjpeg_encoder_deps="libopenjpeg"
2027 libopus_decoder_deps="libopus"
2028 libopus_encoder_deps="libopus"
2029 libopus_encoder_select="audio_frame_queue"
2030 libquvi_demuxer_deps="libquvi"
2031 libschroedinger_decoder_deps="libschroedinger"
2032 libschroedinger_encoder_deps="libschroedinger"
2033 libshine_encoder_deps="libshine"
2034 libshine_encoder_select="audio_frame_queue"
2035 libspeex_decoder_deps="libspeex"
2036 libspeex_encoder_deps="libspeex"
2037 libspeex_encoder_select="audio_frame_queue"
2038 libstagefright_h264_decoder_deps="libstagefright_h264"
2039 libtheora_encoder_deps="libtheora"
2040 libtwolame_encoder_deps="libtwolame"
2041 libvo_aacenc_encoder_deps="libvo_aacenc"
2042 libvo_aacenc_encoder_select="audio_frame_queue"
2043 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2044 libvorbis_decoder_deps="libvorbis"
2045 libvorbis_encoder_deps="libvorbis"
2046 libvorbis_encoder_select="audio_frame_queue"
2047 libvpx_vp8_decoder_deps="libvpx"
2048 libvpx_vp8_encoder_deps="libvpx"
2049 libvpx_vp9_decoder_deps="libvpx"
2050 libvpx_vp9_encoder_deps="libvpx"
2051 libwavpack_encoder_deps="libwavpack"
2052 libx264_encoder_deps="libx264"
2053 libx264rgb_encoder_deps="libx264"
2054 libxavs_encoder_deps="libxavs"
2055 libxvid_encoder_deps="libxvid"
2056 libutvideo_decoder_deps="libutvideo"
2057 libutvideo_encoder_deps="libutvideo"
2058 libzvbi_teletext_decoder_deps="libzvbi"
2059
2060 # demuxers / muxers
2061 ac3_demuxer_select="ac3_parser"
2062 asf_demuxer_select="riffdec"
2063 asf_muxer_select="riffenc"
2064 asf_stream_muxer_select="asf_muxer"
2065 avi_demuxer_select="riffdec"
2066 avi_muxer_select="riffenc"
2067 avisynth_demuxer_deps="avisynth"
2068 avisynth_demuxer_select="riffdec"
2069 caf_demuxer_select="riffdec"
2070 dirac_demuxer_select="dirac_parser"
2071 dts_demuxer_select="dca_parser"
2072 dtshd_demuxer_select="dca_parser"
2073 dxa_demuxer_select="riffdec"
2074 eac3_demuxer_select="ac3_parser"
2075 f4v_muxer_select="mov_muxer"
2076 flac_demuxer_select="flac_parser"
2077 hls_muxer_select="mpegts_muxer"
2078 ipod_muxer_select="mov_muxer"
2079 ismv_muxer_select="mov_muxer"
2080 libnut_demuxer_deps="libnut"
2081 libnut_muxer_deps="libnut"
2082 matroska_audio_muxer_select="matroska_muxer"
2083 matroska_demuxer_select="riffdec"
2084 matroska_demuxer_suggest="bzlib lzo zlib"
2085 matroska_muxer_select="riffenc"
2086 mmf_muxer_select="riffenc"
2087 mov_demuxer_select="riffdec"
2088 mov_demuxer_suggest="zlib"
2089 mov_muxer_select="riffenc rtpenc_chain"
2090 mp3_demuxer_select="mpegaudio_parser"
2091 mp4_muxer_select="mov_muxer"
2092 mpegts_muxer_select="adts_muxer latm_muxer"
2093 mpegtsraw_demuxer_select="mpegts_demuxer"
2094 mxf_d10_muxer_select="mxf_muxer"
2095 nut_muxer_select="riffenc"
2096 nuv_demuxer_select="riffdec"
2097 ogg_demuxer_select="golomb"
2098 psp_muxer_select="mov_muxer"
2099 rtp_demuxer_select="sdp_demuxer"
2100 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2101 rtsp_demuxer_select="http_protocol rtpdec"
2102 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2103 sap_demuxer_select="sdp_demuxer"
2104 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2105 sdp_demuxer_select="rtpdec"
2106 smoothstreaming_muxer_select="ismv_muxer"
2107 spdif_muxer_select="aac_parser"
2108 tak_demuxer_select="tak_parser"
2109 tg2_muxer_select="mov_muxer"
2110 tgp_muxer_select="mov_muxer"
2111 vobsub_demuxer_select="mpegps_demuxer"
2112 w64_demuxer_select="wav_demuxer"
2113 w64_muxer_select="wav_muxer"
2114 wav_demuxer_select="riffdec"
2115 wav_muxer_select="riffenc"
2116 webm_muxer_select="riffenc"
2117 wtv_demuxer_select="riffdec"
2118 xmv_demuxer_select="riffdec"
2119 xwma_demuxer_select="riffdec"
2120
2121 # indevs / outdevs
2122 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2123 alsa_outdev_deps="alsa_asoundlib_h"
2124 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2125 caca_outdev_deps="libcaca"
2126 dshow_indev_deps="IBaseFilter"
2127 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2128 dv1394_indev_deps="dv1394"
2129 dv1394_indev_select="dv_demuxer"
2130 fbdev_indev_deps="linux_fb_h"
2131 fbdev_outdev_deps="linux_fb_h"
2132 iec61883_indev_deps="libiec61883"
2133 jack_indev_deps="jack_jack_h sem_timedwait"
2134 lavfi_indev_deps="avfilter"
2135 libcdio_indev_deps="libcdio"
2136 libdc1394_indev_deps="libdc1394"
2137 libv4l2_indev_deps="libv4l2"
2138 openal_indev_deps="openal"
2139 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2140 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2141 pulse_indev_deps="libpulse"
2142 pulse_outdev_deps="libpulse"
2143 sdl_outdev_deps="sdl"
2144 sndio_indev_deps="sndio_h"
2145 sndio_outdev_deps="sndio_h"
2146 v4l_indev_deps="linux_videodev_h"
2147 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2148 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2149 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2150 vfwcap_indev_extralibs="-lavicap32"
2151 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2152 xv_outdev_extralibs="-lXv -lX11 -lXext"
2153 x11grab_indev_deps="x11grab"
2154
2155 # protocols
2156 bluray_protocol_deps="libbluray"
2157 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2158 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2159 ffrtmpcrypt_protocol_select="tcp_protocol"
2160 ffrtmphttp_protocol_deps="!librtmp_protocol"
2161 ffrtmphttp_protocol_select="http_protocol"
2162 ftp_protocol_select="tcp_protocol"
2163 gopher_protocol_select="network"
2164 httpproxy_protocol_select="tcp_protocol"
2165 http_protocol_select="tcp_protocol"
2166 https_protocol_select="tls_protocol"
2167 librtmp_protocol_deps="librtmp"
2168 librtmpe_protocol_deps="librtmp"
2169 librtmps_protocol_deps="librtmp"
2170 librtmpt_protocol_deps="librtmp"
2171 librtmpte_protocol_deps="librtmp"
2172 libssh_protocol_deps="libssh"
2173 mmsh_protocol_select="http_protocol"
2174 mmst_protocol_select="network"
2175 rtmp_protocol_deps="!librtmp_protocol"
2176 rtmp_protocol_select="tcp_protocol"
2177 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2178 rtmps_protocol_deps="!librtmp_protocol"
2179 rtmps_protocol_select="tls_protocol"
2180 rtmpt_protocol_select="ffrtmphttp_protocol"
2181 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2182 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2183 rtp_protocol_select="udp_protocol"
2184 sctp_protocol_deps="struct_sctp_event_subscribe"
2185 sctp_protocol_select="network"
2186 srtp_protocol_select="rtp_protocol"
2187 tcp_protocol_select="network"
2188 tls_protocol_deps_any="openssl gnutls"
2189 tls_protocol_select="tcp_protocol"
2190 udp_protocol_select="network"
2191 unix_protocol_deps="sys_un_h"
2192 unix_protocol_select="network"
2193
2194 # filters
2195 aconvert_filter_deps="swresample"
2196 amovie_filter_deps="avcodec avformat"
2197 aresample_filter_deps="swresample"
2198 ass_filter_deps="libass"
2199 asyncts_filter_deps="avresample"
2200 atempo_filter_deps="avcodec"
2201 atempo_filter_select="rdft"
2202 azmq_filter_deps="libzmq"
2203 blackframe_filter_deps="gpl"
2204 boxblur_filter_deps="gpl"
2205 colormatrix_filter_deps="gpl"
2206 cropdetect_filter_deps="gpl"
2207 dctdnoiz_filter_deps="avcodec"
2208 dctdnoiz_filter_select="fft"
2209 delogo_filter_deps="gpl"
2210 deshake_filter_deps="avcodec"
2211 deshake_filter_select="dsputil"
2212 drawtext_filter_deps="libfreetype"
2213 ebur128_filter_deps="gpl"
2214 flite_filter_deps="libflite"
2215 frei0r_filter_deps="frei0r dlopen"
2216 frei0r_filter_extralibs='$ldl'
2217 frei0r_src_filter_deps="frei0r dlopen"
2218 frei0r_src_filter_extralibs='$ldl'
2219 geq_filter_deps="gpl"
2220 histeq_filter_deps="gpl"
2221 hqdn3d_filter_deps="gpl"
2222 interlace_filter_deps="gpl"
2223 kerndeint_filter_deps="gpl"
2224 ladspa_filter_deps="ladspa dlopen"
2225 mcdeint_filter_deps="avcodec gpl"
2226 movie_filter_deps="avcodec avformat"
2227 mp_filter_deps="gpl avcodec swscale inline_asm"
2228 mpdecimate_filter_deps="gpl avcodec"
2229 mptestsrc_filter_deps="gpl"
2230 negate_filter_deps="lut_filter"
2231 noise_filter_deps="gpl"
2232 perspective_filter_deps="gpl"
2233 resample_filter_deps="avresample"
2234 ocv_filter_deps="libopencv"
2235 owdenoise_filter_deps="gpl"
2236 pan_filter_deps="swresample"
2237 phase_filter_deps="gpl"
2238 pp_filter_deps="gpl postproc"
2239 pullup_filter_deps="gpl"
2240 removelogo_filter_deps="avcodec avformat swscale"
2241 sab_filter_deps="gpl swscale"
2242 scale_filter_deps="swscale"
2243 smartblur_filter_deps="gpl swscale"
2244 showspectrum_filter_deps="avcodec"
2245 showspectrum_filter_select="rdft"
2246 spp_filter_deps="gpl avcodec"
2247 spp_filter_select="fft"
2248 stereo3d_filter_deps="gpl"
2249 subtitles_filter_deps="avformat avcodec libass"
2250 super2xsai_filter_deps="gpl"
2251 tinterlace_filter_deps="gpl"
2252 vidstabdetect_filter_deps="libvidstab"
2253 vidstabtransform_filter_deps="libvidstab"
2254 yadif_filter_deps="gpl"
2255 pixfmts_super2xsai_test_deps="super2xsai_filter"
2256 tinterlace_merge_test_deps="tinterlace_filter"
2257 tinterlace_pad_test_deps="tinterlace_filter"
2258 zmq_filter_deps="libzmq"
2259
2260 # libraries
2261 avcodec_deps="avutil"
2262 avdevice_deps="avutil avcodec avformat"
2263 avfilter_deps="avutil"
2264 avformat_deps="avutil avcodec"
2265 avresample_deps="avutil"
2266 postproc_deps="avutil gpl"
2267 swscale_deps="avutil"
2268
2269 # programs
2270 ffmpeg_deps="avcodec avfilter avformat swresample"
2271 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2272                null_filter
2273                setpts_filter trim_filter"
2274 ffplay_deps="avcodec avformat swscale swresample sdl"
2275 ffplay_select="rdft crop_filter"
2276 ffprobe_deps="avcodec avformat"
2277 ffserver_deps="avformat fork sarestart"
2278 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2279 ffserver_extralibs='$ldl'
2280
2281 # documentation
2282 podpages_deps="perl"
2283 manpages_deps="perl pod2man"
2284 htmlpages_deps="texi2html"
2285 txtpages_deps="makeinfo"
2286 doc_deps_any="manpages htmlpages podpages txtpages"
2287
2288 # default parameters
2289
2290 logfile="config.log"
2291
2292 # installation paths
2293 prefix_default="/usr/local"
2294 bindir_default='${prefix}/bin'
2295 datadir_default='${prefix}/share/ffmpeg'
2296 docdir_default='${prefix}/share/doc/ffmpeg'
2297 incdir_default='${prefix}/include'
2298 libdir_default='${prefix}/lib'
2299 mandir_default='${prefix}/share/man'
2300 shlibdir_default="$libdir_default"
2301
2302 # toolchain
2303 ar_default="ar"
2304 cc_default="gcc"
2305 cxx_default="g++"
2306 host_cc_default="gcc"
2307 cp_f="cp -f"
2308 install="install"
2309 ln_s="ln -s -f"
2310 nm_default="nm -g"
2311 objformat="elf"
2312 pkg_config_default=pkg-config
2313 ranlib="ranlib"
2314 strip_default="strip"
2315 yasmexe_default="yasm"
2316
2317 nogas=":"
2318
2319 # machine
2320 arch_default=$(uname -m)
2321 cpu="generic"
2322
2323 # OS
2324 target_os_default=$(tolower $(uname -s))
2325 host_os=$target_os_default
2326
2327 # configurable options
2328 enable $PROGRAM_LIST
2329 enable $DOCUMENT_LIST
2330 enable $(filter_out avresample $LIBRARY_LIST)
2331 enable stripping
2332
2333 enable asm
2334 enable debug
2335 enable doc
2336 enable optimizations
2337 enable runtime_cpudetect
2338 enable safe_bitstream_reader
2339 enable static
2340 enable swscale_alpha
2341
2342 # Enable hwaccels by default.
2343 enable dxva2 vaapi vdpau
2344
2345 # build settings
2346 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2347 LIBPREF="lib"
2348 LIBSUF=".a"
2349 FULLNAME='$(NAME)$(BUILDSUF)'
2350 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2351 SLIBPREF="lib"
2352 SLIBSUF=".so"
2353 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2354 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2355 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2356 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2357 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2358 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2359
2360 asflags_filter=echo
2361 cflags_filter=echo
2362 ldflags_filter=echo
2363
2364 AS_C='-c'
2365 AS_O='-o $@'
2366 CC_C='-c'
2367 CC_E='-E -o $@'
2368 CC_O='-o $@'
2369 CXX_C='-c'
2370 CXX_O='-o $@'
2371 LD_O='-o $@'
2372 LD_LIB='-l%'
2373 LD_PATH='-L'
2374 HOSTCC_C='-c'
2375 HOSTCC_O='-o $@'
2376 HOSTLD_O='-o $@'
2377
2378 host_cflags='-O3 -g'
2379 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2380 host_libs='-lm'
2381 host_cflags_filter=echo
2382 host_ldflags_filter=echo
2383
2384 target_path='$(CURDIR)'
2385
2386 # since the object filename is not given with the -MM flag, the compiler
2387 # is only able to print the basename, and we must add the path ourselves
2388 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2389 DEPFLAGS='-MM'
2390
2391 # find source path
2392 if test -f configure; then
2393     source_path=.
2394 else
2395     source_path=$(cd $(dirname "$0"); pwd)
2396     echo "$source_path" | grep -q '[[:blank:]]' &&
2397         die "Out of tree builds are impossible with whitespace in source path."
2398     test -e "$source_path/config.h" &&
2399         die "Out of tree builds are impossible with config.h in source dir."
2400 fi
2401
2402 for v in "$@"; do
2403     r=${v#*=}
2404     l=${v%"$r"}
2405     r=$(sh_quote "$r")
2406     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2407 done
2408
2409 find_things(){
2410     thing=$1
2411     pattern=$2
2412     file=$source_path/$3
2413     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2414 }
2415
2416 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2417 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2418 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2419 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2420 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2421 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2422 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2423 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2424 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2425 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2426 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2427
2428 ALL_COMPONENTS="
2429     $BSF_LIST
2430     $DECODER_LIST
2431     $DEMUXER_LIST
2432     $ENCODER_LIST
2433     $FILTER_LIST
2434     $HWACCEL_LIST
2435     $INDEV_LIST
2436     $MUXER_LIST
2437     $OUTDEV_LIST
2438     $PARSER_LIST
2439     $PROTOCOL_LIST
2440 "
2441
2442 for n in $COMPONENT_LIST; do
2443     v=$(toupper ${n%s})_LIST
2444     eval enable \$$v
2445     eval ${n}_if_any="\$$v"
2446 done
2447
2448 enable $ARCH_EXT_LIST
2449
2450 die_unknown(){
2451     echo "Unknown option \"$1\"."
2452     echo "See $0 --help for available options."
2453     exit 1
2454 }
2455
2456 print_3_columns() {
2457     cat | tr ' ' '\n' | sort | pr -r -3 -t
2458 }
2459
2460 show_list() {
2461     suffix=_$1
2462     shift
2463     echo $* | sed s/$suffix//g | print_3_columns
2464     exit 0
2465 }
2466
2467 rand_list(){
2468     IFS=', '
2469     set -- $*
2470     unset IFS
2471     for thing; do
2472         comp=${thing%:*}
2473         prob=${thing#$comp}
2474         prob=${prob#:}
2475         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2476         echo "prob ${prob:-0.5}"
2477         printf '%s\n' $comp
2478     done
2479 }
2480
2481 do_random(){
2482     action=$1
2483     shift
2484     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2485     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2486 }
2487
2488 for opt do
2489     optval="${opt#*=}"
2490     case "$opt" in
2491         --extra-ldflags=*)
2492             add_ldflags $optval
2493         ;;
2494         --extra-libs=*)
2495             add_extralibs $optval
2496         ;;
2497         --disable-devices)
2498             disable $INDEV_LIST $OUTDEV_LIST
2499         ;;
2500         --enable-debug=*)
2501             debuglevel="$optval"
2502         ;;
2503         --disable-programs)
2504             disable $PROGRAM_LIST
2505         ;;
2506         --disable-everything)
2507             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2508         ;;
2509         --disable-all)
2510             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2511             disable $LIBRARY_LIST $PROGRAM_LIST doc
2512         ;;
2513         --enable-random|--disable-random)
2514             action=${opt%%-random}
2515             do_random ${action#--} $COMPONENT_LIST
2516         ;;
2517         --enable-random=*|--disable-random=*)
2518             action=${opt%%-random=*}
2519             do_random ${action#--} $optval
2520         ;;
2521         --enable-*=*|--disable-*=*)
2522             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2523             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2524             eval list=\$$(toupper $thing)_LIST
2525             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2526             list=$(filter "$name" $list)
2527             [ "$list" = "" ] && warn "Option $opt did not match anything"
2528             $action $list
2529         ;;
2530         --enable-?*|--disable-?*)
2531             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2532             if is_in $option $COMPONENT_LIST; then
2533                 test $action = disable && action=unset
2534                 eval $action \$$(toupper ${option%s})_LIST
2535             elif is_in $option $CMDLINE_SELECT; then
2536                 $action $option
2537             else
2538                 die_unknown $opt
2539             fi
2540         ;;
2541         --list-*)
2542             NAME="${opt#--list-}"
2543             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2544             NAME=${NAME%s}
2545             eval show_list $NAME \$$(toupper $NAME)_LIST
2546         ;;
2547         --help|-h) show_help
2548         ;;
2549         --fatal-warnings) enable fatal_warnings
2550         ;;
2551         *)
2552             optname="${opt%%=*}"
2553             optname="${optname#--}"
2554             optname=$(echo "$optname" | sed 's/-/_/g')
2555             if is_in $optname $CMDLINE_SET; then
2556                 eval $optname='$optval'
2557             elif is_in $optname $CMDLINE_APPEND; then
2558                 append $optname "$optval"
2559             else
2560                 die_unknown $opt
2561             fi
2562         ;;
2563     esac
2564 done
2565
2566 disabled logging && logfile=/dev/null
2567
2568 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2569 set >> $logfile
2570
2571 test -n "$cross_prefix" && enable cross_compile
2572
2573 if enabled cross_compile; then
2574     test -n "$arch" && test -n "$target_os" ||
2575         die "Must specify target arch and OS when cross-compiling"
2576 fi
2577
2578 ar_default="${cross_prefix}${ar_default}"
2579 cc_default="${cross_prefix}${cc_default}"
2580 cxx_default="${cross_prefix}${cxx_default}"
2581 nm_default="${cross_prefix}${nm_default}"
2582 pkg_config_default="${cross_prefix}${pkg_config_default}"
2583 ranlib="${cross_prefix}${ranlib}"
2584 strip_default="${cross_prefix}${strip_default}"
2585
2586 sysinclude_default="${sysroot}/usr/include"
2587
2588 test -n "$valgrind" && toolchain="valgrind-memcheck"
2589
2590 case "$toolchain" in
2591     clang-asan)
2592         cc_default="clang"
2593         add_cflags  -fsanitize=address
2594         add_ldflags -fsanitize=address
2595     ;;
2596     clang-tsan)
2597         cc_default="clang"
2598         add_cflags  -fsanitize=thread -pie
2599         add_ldflags -fsanitize=thread -pie
2600     ;;
2601     gcc-asan)
2602         cc_default="gcc"
2603         add_cflags  -fsanitize=address
2604         add_ldflags -fsanitize=address
2605     ;;
2606     gcc-tsan)
2607         cc_default="gcc"
2608         add_cflags  -fsanitize=thread -pie -fPIC
2609         add_ldflags -fsanitize=thread -pie -fPIC
2610     ;;
2611     valgrind-massif)
2612         target_exec_default=${valgrind:-"valgrind"}
2613         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2614     ;;
2615     valgrind-memcheck)
2616         target_exec_default=${valgrind:-"valgrind"}
2617         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2618     ;;
2619     msvc)
2620         cc_default="c99wrap cl"
2621         ld_default="c99wrap link"
2622         nm_default="dumpbin -symbols"
2623         ar_default="lib"
2624         target_os_default="win32"
2625     ;;
2626     icl)
2627         cc_default="c99wrap -noconv icl"
2628         ld_default="c99wrap xilink"
2629         nm_default="dumpbin -symbols"
2630         ar_default="xilib"
2631         target_os_default="win32"
2632     ;;
2633     gcov)
2634         add_cflags  -fprofile-arcs -ftest-coverage
2635         add_ldflags -fprofile-arcs -ftest-coverage
2636     ;;
2637     ?*)
2638         die "Unknown toolchain $toolchain"
2639     ;;
2640 esac
2641
2642 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2643 enabled cross_compile || host_cc_default=$cc
2644 set_default host_cc
2645
2646 if ! $pkg_config --version >/dev/null 2>&1; then
2647     warn "$pkg_config not found, library detection may fail."
2648     pkg_config=false
2649 fi
2650
2651 exesuf() {
2652     case $1 in
2653         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2654     esac
2655 }
2656
2657 EXESUF=$(exesuf $target_os)
2658 HOSTEXESUF=$(exesuf $host_os)
2659
2660 # set temporary file name
2661 : ${TMPDIR:=$TEMPDIR}
2662 : ${TMPDIR:=$TMP}
2663 : ${TMPDIR:=/tmp}
2664
2665 if [ -n "$tempprefix" ] ; then
2666     mktemp(){
2667         echo $tempprefix.${HOSTNAME}.${UID}
2668     }
2669 elif ! check_cmd mktemp -u XXXXXX; then
2670     # simple replacement for missing mktemp
2671     # NOT SAFE FOR GENERAL USE
2672     mktemp(){
2673         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2674     }
2675 fi
2676
2677 tmpfile(){
2678     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2679         (set -C; exec > $tmp) 2>/dev/null ||
2680         die "Unable to create temporary file in $TMPDIR."
2681     append TMPFILES $tmp
2682     eval $1=$tmp
2683 }
2684
2685 trap 'rm -f -- $TMPFILES' EXIT
2686
2687 tmpfile TMPASM .asm
2688 tmpfile TMPC   .c
2689 tmpfile TMPCPP .cpp
2690 tmpfile TMPE   $EXESUF
2691 tmpfile TMPH   .h
2692 tmpfile TMPO   .o
2693 tmpfile TMPS   .S
2694 tmpfile TMPSH  .sh
2695 tmpfile TMPV   .ver
2696
2697 unset -f mktemp
2698
2699 chmod +x $TMPE
2700
2701 # make sure we can execute files in $TMPDIR
2702 cat > $TMPSH 2>> $logfile <<EOF
2703 #! /bin/sh
2704 EOF
2705 chmod +x $TMPSH >> $logfile 2>&1
2706 if ! $TMPSH >> $logfile 2>&1; then
2707     cat <<EOF
2708 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2709 variable to another directory and make sure that it is not mounted noexec.
2710 EOF
2711     die "Sanity test failed."
2712 fi
2713
2714 ccc_flags(){
2715     for flag; do
2716         case $flag in
2717             -std=c99)           echo -c99                       ;;
2718             -mcpu=*)            echo -arch ${flag#*=}           ;;
2719             -mieee)             echo -ieee                      ;;
2720             -O*|-fast)          echo $flag                      ;;
2721             -fno-math-errno)    echo -assume nomath_errno       ;;
2722             -g)                 echo -g3                        ;;
2723             -Wall)              echo -msg_enable level2         ;;
2724             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2725             -Wl,*)              echo $flag                      ;;
2726             -f*|-W*)                                            ;;
2727             *)                  echo $flag                      ;;
2728         esac
2729    done
2730 }
2731
2732 cparser_flags(){
2733     for flag; do
2734         case $flag in
2735             -Wno-switch)             echo -Wno-switch-enum ;;
2736             -Wno-format-zero-length) ;;
2737             -Wdisabled-optimization) ;;
2738             -Wno-pointer-sign)       echo -Wno-other ;;
2739             *)                       echo $flag ;;
2740         esac
2741     done
2742 }
2743
2744 msvc_common_flags(){
2745     for flag; do
2746         case $flag in
2747             # In addition to specifying certain flags under the compiler
2748             # specific filters, they must be specified here as well or else the
2749             # generic catch all at the bottom will print the original flag.
2750             -Wall)                ;;
2751             -std=c99)             ;;
2752             # Common flags
2753             -fomit-frame-pointer) ;;
2754             -g)                   echo -Z7 ;;
2755             -fno-math-errno)      ;;
2756             -fno-common)          ;;
2757             -fno-signed-zeros)    ;;
2758             -fPIC)                ;;
2759             -mthumb)              ;;
2760             -march=*)             ;;
2761             -lz)                  echo zlib.lib ;;
2762             -lavifil32)           echo vfw32.lib ;;
2763             -lavicap32)           echo vfw32.lib user32.lib ;;
2764             -l*)                  echo ${flag#-l}.lib ;;
2765             *)                    echo $flag ;;
2766         esac
2767     done
2768 }
2769
2770 msvc_flags(){
2771     msvc_common_flags "$@"
2772     for flag; do
2773         case $flag in
2774             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2775                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2776                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2777                                        -wd4554 \
2778                                        -wd4273 ;;
2779         esac
2780     done
2781 }
2782
2783 icl_flags(){
2784     msvc_common_flags "$@"
2785     for flag; do
2786         case $flag in
2787             # Despite what Intel's documentation says -Wall, which is supported
2788             # on Windows, does enable remarks so disable them here.
2789             -Wall)                echo $flag -Qdiag-disable:remark ;;
2790             -std=c99)             echo -Qstd=c99 ;;
2791         esac
2792     done
2793 }
2794
2795 pgi_flags(){
2796     for flag; do
2797         case $flag in
2798             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2799             -fomit-frame-pointer) echo -Mnoframe ;;
2800             -g)                   echo -gopt ;;
2801             *)                    echo $flag ;;
2802         esac
2803     done
2804 }
2805
2806 suncc_flags(){
2807     for flag; do
2808         case $flag in
2809             -march=*|-mcpu=*)
2810                 case "${flag#*=}" in
2811                     native)                   echo -xtarget=native       ;;
2812                     v9|niagara)               echo -xarch=sparc          ;;
2813                     ultrasparc)               echo -xarch=sparcvis       ;;
2814                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2815                     i586|pentium)             echo -xchip=pentium        ;;
2816                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2817                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2818                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2819                     pentium4*)          echo -xtarget=pentium4           ;;
2820                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2821                     *-sse3)             echo -xarch=sse3                 ;;
2822                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2823                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2824                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2825                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2826                     bdver*)                    echo -xarch=avx           ;;
2827                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2828                     k8|opteron|athlon64|athlon-fx)
2829                                                echo -xarch=sse2a         ;;
2830                     athlon*)                   echo -xarch=pentium_proa  ;;
2831                 esac
2832                 ;;
2833             -std=c99)             echo -xc99              ;;
2834             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2835             -fPIC)                echo -KPIC -xcode=pic32 ;;
2836             -W*,*)                echo $flag              ;;
2837             -f*-*|-W*|-mimpure-text)                      ;;
2838             -shared)              echo -G                 ;;
2839             *)                    echo $flag              ;;
2840         esac
2841     done
2842 }
2843
2844 tms470_flags(){
2845     for flag; do
2846         case $flag in
2847             -march=*|-mcpu=*)
2848                 case "${flag#*=}" in
2849                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2850                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2851                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2852                     armv6*|arm11*)          echo -mv=6   ;;
2853                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2854                                             echo -mv=5e  ;;
2855                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2856                 esac
2857                 ;;
2858             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2859             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2860             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2861             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2862             -msoft-float)   echo --float_support=vfplib       ;;
2863             -O[0-3]|-mf=*)  echo $flag                        ;;
2864             -g)             echo -g -mn                       ;;
2865             -pds=*)         echo $flag                        ;;
2866             -D*|-I*)        echo $flag                        ;;
2867             --gcc|--abi=*)  echo $flag                        ;;
2868             -me)            echo $flag                        ;;
2869         esac
2870     done
2871 }
2872
2873 probe_cc(){
2874     pfx=$1
2875     _cc=$2
2876
2877     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2878     unset _ld_o _ldflags _ld_lib _ld_path
2879     unset _depflags _DEPCMD _DEPFLAGS
2880     _flags_filter=echo
2881
2882     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2883         _type=llvm_gcc
2884         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2885         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2886         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2887         _cflags_speed='-O3'
2888         _cflags_size='-Os'
2889     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2890         _type=gcc
2891         gcc_version=$($_cc --version | head -n1)
2892         gcc_basever=$($_cc -dumpversion)
2893         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2894         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2895         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2896         if ! $_cc -dumpversion | grep -q '^2\.'; then
2897             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2898         fi
2899         _cflags_speed='-O3'
2900         _cflags_size='-Os'
2901     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2902         _type=icc
2903         _ident=$($_cc --version | head -n1)
2904         _depflags='-MMD'
2905         _cflags_speed='-O3'
2906         _cflags_size='-Os'
2907         _cflags_noopt='-O1'
2908     elif $_cc -v 2>&1 | grep -q xlc; then
2909         _type=xlc
2910         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2911         _cflags_speed='-O5'
2912         _cflags_size='-O5 -qcompact'
2913     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2914         _type=ccc
2915         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2916         _DEPFLAGS='-M'
2917         _cflags_speed='-fast'
2918         _cflags_size='-O1'
2919         _flags_filter=ccc_flags
2920     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2921         test -d "$sysroot" || die "No valid sysroot specified."
2922         _type=armcc
2923         _ident=$($_cc --vsn | head -n1)
2924         armcc_conf="$PWD/armcc.conf"
2925         $_cc --arm_linux_configure                 \
2926              --arm_linux_config_file="$armcc_conf" \
2927              --configure_sysroot="$sysroot"        \
2928              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2929              die "Error creating armcc configuration file."
2930         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2931         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2932         as_default="${cross_prefix}gcc"
2933         _depflags='-MMD'
2934         _cflags_speed='-O3'
2935         _cflags_size='-Os'
2936     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2937         _type=tms470
2938         _ident=$($_cc -version | head -n1 | tr -s ' ')
2939         _flags='--gcc --abi=eabi -me'
2940         _cc_e='-ppl -fe=$@'
2941         _cc_o='-fe=$@'
2942         _depflags='-ppa -ppd=$(@:.o=.d)'
2943         _cflags_speed='-O3 -mf=5'
2944         _cflags_size='-O3 -mf=2'
2945         _flags_filter=tms470_flags
2946     elif $_cc -v 2>&1 | grep -q clang; then
2947         _type=clang
2948         _ident=$($_cc --version | head -n1)
2949         _depflags='-MMD'
2950         _cflags_speed='-O3'
2951         _cflags_size='-Os'
2952     elif $_cc -V 2>&1 | grep -q Sun; then
2953         _type=suncc
2954         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2955         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2956         _DEPFLAGS='-xM1 -xc99'
2957         _ldflags='-std=c99'
2958         _cflags_speed='-O5'
2959         _cflags_size='-O5 -xspace'
2960         _flags_filter=suncc_flags
2961     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2962         _type=pathscale
2963         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2964         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2965         _cflags_speed='-O2'
2966         _cflags_size='-Os'
2967         _flags_filter='filter_out -Wdisabled-optimization'
2968     elif $_cc -v 2>&1 | grep -q Open64; then
2969         _type=open64
2970         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2971         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2972         _cflags_speed='-O2'
2973         _cflags_size='-Os'
2974         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2975     elif $_cc -V 2>&1 | grep -q Portland; then
2976         _type=pgi
2977         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2978         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2979         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2980         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2981         _cflags_noopt="-O"
2982         _flags_filter=pgi_flags
2983     elif $_cc 2>&1 | grep -q Microsoft; then
2984         _type=msvc
2985         _ident=$($cc 2>&1 | head -n1)
2986         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2987         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2988         _cflags_speed="-O2"
2989         _cflags_size="-O1"
2990         # Nonstandard output options, to avoid msys path conversion issues.
2991         # Relies on wrapper to remap it.
2992         if $_cc 2>&1 | grep -q Linker; then
2993             _ld_o='-out $@'
2994         else
2995             _ld_o='-Fe$@'
2996         fi
2997         _cc_o='-Fo $@'
2998         _cc_e='-P -Fi $@'
2999         _flags_filter=msvc_flags
3000         _ld_lib='lib%.a'
3001         _ld_path='-libpath:'
3002         _flags='-nologo'
3003         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3004         if [ $pfx = hostcc ]; then
3005             append _cflags -Dsnprintf=_snprintf
3006         fi
3007         disable stripping
3008     elif $_cc 2>&1 | grep -q Intel; then
3009         _type=icl
3010         _ident=$($cc 2>&1 | head -n1)
3011         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3012         # Not only is O3 broken on 13.x+ but it is slower on all previous
3013         # versions (tested) as well.
3014         _cflags_speed="-O2"
3015         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3016         # Nonstandard output options, to avoid msys path conversion issues.
3017         # Relies on wrapper to remap it.
3018         if $_cc 2>&1 | grep -q Linker; then
3019             _ld_o='-out $@'
3020         else
3021             _ld_o='-Fe$@'
3022         fi
3023         _cc_o='-Fo $@'
3024         _cc_e='-P'
3025         _flags_filter=icl_flags
3026         _ld_lib='lib%.a'
3027         _ld_path='-libpath:'
3028         # -Qdiag-error to make icl error when seeing certain unknown arguments
3029         _flags='-nologo -Qdiag-error:4044,10157'
3030         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3031         # with MSVC which enables it by default.
3032         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3033         if [ $pfx = hostcc ]; then
3034             append _cflags -Dsnprintf=_snprintf
3035         fi
3036     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3037         _type=cparser
3038         _ident=$($_cc --version | head -n1)
3039         _depflags='-MMD'
3040         _cflags_speed='-O4'
3041         _cflags_size='-O2'
3042         _flags_filter=cparser_flags
3043     fi
3044
3045     eval ${pfx}_type=\$_type
3046     eval ${pfx}_ident=\$_ident
3047 }
3048
3049 set_ccvars(){
3050     eval ${1}_C=\${_cc_c-\${${1}_C}}
3051     eval ${1}_E=\${_cc_e-\${${1}_E}}
3052     eval ${1}_O=\${_cc_o-\${${1}_O}}
3053
3054     if [ -n "$_depflags" ]; then
3055         eval ${1}_DEPFLAGS=\$_depflags
3056     else
3057         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3058         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3059         eval DEP${1}FLAGS=\$_flags
3060     fi
3061 }
3062
3063 probe_cc cc "$cc"
3064 cflags_filter=$_flags_filter
3065 cflags_speed=$_cflags_speed
3066 cflags_size=$_cflags_size
3067 cflags_noopt=$_cflags_noopt
3068 add_cflags $_flags $_cflags
3069 cc_ldflags=$_ldflags
3070 set_ccvars CC
3071
3072 probe_cc hostcc "$host_cc"
3073 host_cflags_filter=$_flags_filter
3074 add_host_cflags  $_flags $_cflags
3075 set_ccvars HOSTCC
3076
3077 test -n "$cc_type" && enable $cc_type ||
3078     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3079
3080 : ${as_default:=$cc}
3081 : ${dep_cc_default:=$cc}
3082 : ${ld_default:=$cc}
3083 : ${host_ld_default:=$host_cc}
3084 set_default ar as dep_cc ld host_ld
3085
3086 probe_cc as "$as"
3087 asflags_filter=$_flags_filter
3088 add_asflags $_flags $_cflags
3089 set_ccvars AS
3090
3091 probe_cc ld "$ld"
3092 ldflags_filter=$_flags_filter
3093 add_ldflags $_flags $_ldflags
3094 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3095 LD_O=${_ld_o-$LD_O}
3096 LD_LIB=${_ld_lib-$LD_LIB}
3097 LD_PATH=${_ld_path-$LD_PATH}
3098
3099 probe_cc hostld "$host_ld"
3100 host_ldflags_filter=$_flags_filter
3101 add_host_ldflags $_flags $_ldflags
3102 HOSTLD_O=${_ld_o-$HOSTLD_O}
3103
3104 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3105     probe_cc depcc "$dep_cc"
3106     CCDEP=${_DEPCMD:-$DEPCMD}
3107     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3108     DEPCCFLAGS=$_flags
3109 fi
3110
3111 if $ar 2>&1 | grep -q Microsoft; then
3112     arflags="-nologo"
3113     ar_o='-out:$@'
3114 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3115     arflags="rq"
3116     ar_o='$@'
3117 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3118     arflags='-Xany -r -c'
3119     ar_o='$@'
3120 else
3121     arflags="rc"
3122     ar_o='$@'
3123 fi
3124
3125 add_cflags $extra_cflags
3126 add_cxxflags $extra_cxxflags
3127 add_asflags $extra_cflags
3128
3129 if test -n "$sysroot"; then
3130     case "$cc_type" in
3131         gcc|llvm_gcc|clang)
3132             add_cppflags --sysroot="$sysroot"
3133             add_ldflags --sysroot="$sysroot"
3134         ;;
3135         tms470)
3136             add_cppflags -I"$sysinclude"
3137             add_ldflags  --sysroot="$sysroot"
3138         ;;
3139     esac
3140 fi
3141
3142 if test "$cpu" = host; then
3143     enabled cross_compile &&
3144         die "--cpu=host makes no sense when cross-compiling."
3145
3146     case "$cc_type" in
3147         gcc|llvm_gcc)
3148             check_native(){
3149                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3150                 sed -n "/cc1.*$1=/{
3151                             s/.*$1=\\([^ ]*\\).*/\\1/
3152                             p
3153                             q
3154                         }" $TMPE
3155             }
3156             cpu=$(check_native -march || check_native -mcpu)
3157         ;;
3158     esac
3159
3160     test "${cpu:-host}" = host &&
3161         die "--cpu=host not supported with compiler $cc"
3162 fi
3163
3164 # Deal with common $arch aliases
3165 case "$arch" in
3166     aarch64|arm64)
3167         arch="aarch64"
3168     ;;
3169     arm*|iPad*|iPhone*)
3170         arch="arm"
3171     ;;
3172     mips*|IP*)
3173         arch="mips"
3174     ;;
3175     parisc*|hppa*)
3176         arch="parisc"
3177     ;;
3178     "Power Macintosh"|ppc*|powerpc*)
3179         arch="ppc"
3180     ;;
3181     s390|s390x)
3182         arch="s390"
3183     ;;
3184     sh4|sh)
3185         arch="sh4"
3186     ;;
3187     sun4u|sparc*)
3188         arch="sparc"
3189     ;;
3190     tilegx|tile-gx)
3191         arch="tilegx"
3192     ;;
3193     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3194         arch="x86"
3195     ;;
3196 esac
3197
3198 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3199 enable $arch
3200
3201 # Add processor-specific flags
3202 if enabled aarch64; then
3203
3204     case $cpu in
3205         armv*)
3206             cpuflags="-march=$cpu"
3207         ;;
3208         *)
3209             cpuflags="-mcpu=$cpu"
3210         ;;
3211     esac
3212
3213 elif enabled alpha; then
3214
3215     cpuflags="-mcpu=$cpu"
3216
3217 elif enabled arm; then
3218
3219     check_arm_arch() {
3220         check_cpp_condition stddef.h \
3221             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3222             $cpuflags
3223     }
3224
3225     probe_arm_arch() {
3226         if   check_arm_arch 4;        then echo armv4;
3227         elif check_arm_arch 4T;       then echo armv4t;
3228         elif check_arm_arch 5;        then echo armv5;
3229         elif check_arm_arch 5E;       then echo armv5e;
3230         elif check_arm_arch 5T;       then echo armv5t;
3231         elif check_arm_arch 5TE;      then echo armv5te;
3232         elif check_arm_arch 5TEJ;     then echo armv5te;
3233         elif check_arm_arch 6;        then echo armv6;
3234         elif check_arm_arch 6J;       then echo armv6j;
3235         elif check_arm_arch 6K;       then echo armv6k;
3236         elif check_arm_arch 6Z;       then echo armv6z;
3237         elif check_arm_arch 6ZK;      then echo armv6zk;
3238         elif check_arm_arch 6T2;      then echo armv6t2;
3239         elif check_arm_arch 7;        then echo armv7;
3240         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3241         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3242         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3243         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3244         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3245         fi
3246     }
3247
3248     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3249
3250     case $cpu in
3251         armv*)
3252             cpuflags="-march=$cpu"
3253             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3254         ;;
3255         *)
3256             cpuflags="-mcpu=$cpu"
3257             case $cpu in
3258                 cortex-a*)                               subarch=armv7a  ;;
3259                 cortex-r*)                               subarch=armv7r  ;;
3260                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3261                 arm11*)                                  subarch=armv6   ;;
3262                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3263                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3264                 *)                             subarch=$(probe_arm_arch) ;;
3265             esac
3266         ;;
3267     esac
3268
3269     case "$subarch" in
3270         armv5t*)    enable fast_clz                ;;
3271         armv[6-8]*) enable fast_clz fast_unaligned ;;
3272     esac
3273
3274 elif enabled avr32; then
3275
3276     case $cpu in
3277         ap7[02]0[0-2])
3278             subarch="avr32_ap"
3279             cpuflags="-mpart=$cpu"
3280         ;;
3281         ap)
3282             subarch="avr32_ap"
3283             cpuflags="-march=$cpu"
3284         ;;
3285         uc3[ab]*)
3286             subarch="avr32_uc"
3287             cpuflags="-mcpu=$cpu"
3288         ;;
3289         uc)
3290             subarch="avr32_uc"
3291             cpuflags="-march=$cpu"
3292         ;;
3293     esac
3294
3295 elif enabled bfin; then
3296
3297     cpuflags="-mcpu=$cpu"
3298
3299 elif enabled mips; then
3300
3301     cpuflags="-march=$cpu"
3302
3303     case $cpu in
3304         24kc)
3305             disable mipsfpu
3306             disable mipsdspr1
3307             disable mipsdspr2
3308         ;;
3309         24kf*)
3310             disable mipsdspr1
3311             disable mipsdspr2
3312         ;;
3313         24kec|34kc|1004kc)
3314             disable mipsfpu
3315             disable mipsdspr2
3316         ;;
3317         24kef*|34kf*|1004kf*)
3318             disable mipsdspr2
3319         ;;
3320         74kc)
3321             disable mipsfpu
3322         ;;
3323     esac
3324
3325 elif enabled ppc; then
3326
3327     case $(tolower $cpu) in
3328         601|ppc601|powerpc601)
3329             cpuflags="-mcpu=601"
3330             disable altivec
3331         ;;
3332         603*|ppc603*|powerpc603*)
3333             cpuflags="-mcpu=603"
3334             disable altivec
3335         ;;
3336         604*|ppc604*|powerpc604*)
3337             cpuflags="-mcpu=604"
3338             disable altivec
3339         ;;
3340         g3|75*|ppc75*|powerpc75*)
3341             cpuflags="-mcpu=750"
3342             disable altivec
3343         ;;
3344         g4|745*|ppc745*|powerpc745*)
3345             cpuflags="-mcpu=7450"
3346         ;;
3347         74*|ppc74*|powerpc74*)
3348             cpuflags="-mcpu=7400"
3349         ;;
3350         g5|970|ppc970|powerpc970)
3351             cpuflags="-mcpu=970"
3352         ;;
3353         power[3-7]*)
3354             cpuflags="-mcpu=$cpu"
3355         ;;
3356         cell)
3357             cpuflags="-mcpu=cell"
3358             enable ldbrx
3359         ;;
3360         e500mc)
3361             cpuflags="-mcpu=e500mc"
3362             disable altivec
3363         ;;
3364         e500v2)
3365             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3366             disable altivec
3367         ;;
3368         e500)
3369             cpuflags="-mcpu=8540 -mhard-float"
3370             disable altivec
3371         ;;
3372     esac
3373
3374 elif enabled sparc; then
3375
3376     case $cpu in
3377         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3378             cpuflags="-mcpu=$cpu"
3379             disable vis
3380         ;;
3381         ultrasparc*|niagara[234])
3382             cpuflags="-mcpu=$cpu"
3383         ;;
3384     esac
3385
3386 elif enabled x86; then
3387
3388     case $cpu in
3389         i[345]86|pentium)
3390             cpuflags="-march=$cpu"
3391             disable mmx
3392         ;;
3393         # targets that do NOT support nopl and conditional mov (cmov)
3394         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3395             cpuflags="-march=$cpu"
3396             disable i686
3397         ;;
3398         # targets that do support nopl and conditional mov (cmov)
3399         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3400             cpuflags="-march=$cpu"
3401             enable i686
3402             enable fast_cmov
3403         ;;
3404         # targets that do support conditional mov but on which it's slow
3405         pentium4|pentium4m|prescott|nocona)
3406             cpuflags="-march=$cpu"
3407             enable i686
3408             disable fast_cmov
3409         ;;
3410     esac
3411
3412 fi
3413
3414 if [ "$cpu" != generic ]; then
3415     add_cflags  $cpuflags
3416     add_asflags $cpuflags
3417 fi
3418
3419 # compiler sanity check
3420 check_exec <<EOF
3421 int main(void){ return 0; }
3422 EOF
3423 if test "$?" != 0; then
3424     echo "$cc is unable to create an executable file."
3425     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3426         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3427         echo "Only do this if you know what cross compiling means."
3428     fi
3429     die "C compiler test failed."
3430 fi
3431
3432 add_cppflags -D_ISOC99_SOURCE
3433 add_cxxflags -D__STDC_CONSTANT_MACROS
3434 check_cflags -std=c99
3435 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3436 #include <stdlib.h>
3437 EOF
3438 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3439 #include <stdlib.h>
3440 EOF
3441
3442 check_host_cflags -std=c99
3443 check_host_cflags -Wall
3444
3445 check_64bit(){
3446     arch32=$1
3447     arch64=$2
3448     expr=$3
3449     check_code cc "" "int test[2*($expr) - 1]" &&
3450         subarch=$arch64 || subarch=$arch32
3451 }
3452
3453 case "$arch" in
3454     aarch64|alpha|ia64)
3455         spic=$shared
3456     ;;
3457     mips)
3458         check_64bit mips mips64 '_MIPS_SIM > 1'
3459         spic=$shared
3460     ;;
3461     parisc)
3462         check_64bit parisc parisc64 'sizeof(void *) > 4'
3463         spic=$shared
3464     ;;
3465     ppc)
3466         check_64bit ppc ppc64 'sizeof(void *) > 4'
3467         spic=$shared
3468     ;;
3469     sparc)
3470         check_64bit sparc sparc64 'sizeof(void *) > 4'
3471         spic=$shared
3472     ;;
3473     x86)
3474         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3475         if test "$subarch" = "x86_64"; then
3476             spic=$shared
3477         fi
3478     ;;
3479     ppc)
3480         check_cc <<EOF && subarch="ppc64"
3481         int test[(int)sizeof(char*) - 7];
3482 EOF
3483     ;;
3484 esac
3485
3486 enable $subarch
3487 enabled spic && enable_weak pic
3488
3489 # OS specific
3490 case $target_os in
3491     aix)
3492         SHFLAGS=-shared
3493         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3494         enabled shared && add_ldflags -Wl,-brtl
3495         ;;
3496     haiku)
3497         prefix_default="/boot/common"
3498         network_extralibs="-lnetwork"
3499         host_libs=
3500         ;;
3501     sunos)
3502         SHFLAGS='-shared -Wl,-h,$$(@F)'
3503         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3504         network_extralibs="-lsocket -lnsl"
3505         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3506         # When using suncc to build, the Solaris linker will mark
3507         # an executable with each instruction set encountered by
3508         # the Solaris assembler.  As our libraries contain their own
3509         # guards for processor-specific code, instead suppress
3510         # generation of the HWCAPS ELF section on Solaris x86 only.
3511         enabled_all suncc x86 &&
3512             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3513             add_ldflags -Wl,-M,mapfile
3514         nm_default='nm -P -g'
3515         ;;
3516     netbsd)
3517         disable symver
3518         oss_indev_extralibs="-lossaudio"
3519         oss_outdev_extralibs="-lossaudio"
3520         enabled gcc || check_ldflags -Wl,-zmuldefs
3521         ;;
3522     openbsd|bitrig)
3523         disable symver
3524         SHFLAGS='-shared'
3525         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3526         SLIB_INSTALL_LINKS=
3527         oss_indev_extralibs="-lossaudio"
3528         oss_outdev_extralibs="-lossaudio"
3529         ;;
3530     dragonfly)
3531         disable symver
3532         ;;
3533     freebsd)
3534         ;;
3535     bsd/os)
3536         add_extralibs -lpoll -lgnugetopt
3537         strip="strip -d"
3538         ;;
3539     darwin)
3540         gas="gas-preprocessor.pl $cc"
3541         enabled ppc && add_asflags -force_cpusubtype_ALL
3542         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3543         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3544         strip="${strip} -x"
3545         add_ldflags -Wl,-dynamic,-search_paths_first
3546         SLIBSUF=".dylib"
3547         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3548         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3549         objformat="macho"
3550         enabled x86_64 && objformat="macho64"
3551         enabled_any pic shared ||
3552             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3553         ;;
3554     mingw32*)
3555         if test $target_os = "mingw32ce"; then
3556             disable network
3557         else
3558             target_os=mingw32
3559         fi
3560         LIBTARGET=i386
3561         if enabled x86_64; then
3562             LIBTARGET="i386:x86-64"
3563         elif enabled arm; then
3564             LIBTARGET=arm-wince
3565         fi
3566         check_ldflags -Wl,--nxcompat
3567         check_ldflags -Wl,--dynamicbase
3568         shlibdir_default="$bindir_default"
3569         SLIBPREF=""
3570         SLIBSUF=".dll"
3571         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3572         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3573         dlltool="${cross_prefix}dlltool"
3574         if check_cmd lib.exe -list; then
3575             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3576             if enabled x86_64; then
3577                 LIBTARGET=x64
3578             fi
3579         elif check_cmd $dlltool --version; then
3580             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3581         fi
3582         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3583         SLIB_INSTALL_LINKS=
3584         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3585         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3586         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3587         objformat="win32"
3588         ranlib=:
3589         enable dos_paths
3590         ;;
3591     win32|win64)
3592         if enabled shared; then
3593             # Link to the import library instead of the normal static library
3594             # for shared libs.
3595             LD_LIB='%.lib'
3596             # Cannot build both shared and static libs with MSVC or icl.
3597             disable static
3598         fi
3599         shlibdir_default="$bindir_default"
3600         SLIBPREF=""
3601         SLIBSUF=".dll"
3602         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3603         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3604         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3605         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3606         SLIB_INSTALL_LINKS=
3607         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3608         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3609         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3610         objformat="win32"
3611         ranlib=:
3612         enable dos_paths
3613         ;;
3614     cygwin*)
3615         target_os=cygwin
3616         shlibdir_default="$bindir_default"
3617         SLIBPREF="cyg"
3618         SLIBSUF=".dll"
3619         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3620         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3621         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3622         SLIB_INSTALL_LINKS=
3623         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3624         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3625         objformat="win32"
3626         enable dos_paths
3627         ;;
3628     *-dos|freedos|opendos)
3629         network_extralibs="-lsocket"
3630         objformat="coff"
3631         enable dos_paths
3632         add_cppflags -U__STRICT_ANSI__
3633         ;;
3634     linux)
3635         enable dv1394
3636         ;;
3637     irix*)
3638         target_os=irix
3639         ranlib="echo ignoring ranlib"
3640         ;;
3641     os/2*)
3642         strip="lxlite -CS"
3643         ln_s="cp -f"
3644         objformat="aout"
3645         add_cppflags -D_GNU_SOURCE
3646         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3647         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3648         LIBSUF="_s.a"
3649         SLIBPREF=""
3650         SLIBSUF=".dll"
3651         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3652         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3653         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3654             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3655             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3656             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3657             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3658             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3659         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3660             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3661         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3662         enable dos_paths
3663         enable_weak os2threads
3664         ;;
3665     gnu/kfreebsd)
3666         add_cppflags -D_BSD_SOURCE
3667         ;;
3668     gnu)
3669         ;;
3670     qnx)
3671         add_cppflags -D_QNX_SOURCE
3672         network_extralibs="-lsocket"
3673         ;;
3674     symbian)
3675         SLIBSUF=".dll"
3676         enable dos_paths
3677         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3678         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3679         add_ldflags -Wl,--target1-abs,--no-undefined \
3680                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3681                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3682         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3683                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3684                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3685         ;;
3686     osf1)
3687         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3688         ;;
3689     minix)
3690         ;;
3691     plan9)
3692         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3693                      -D_REENTRANT_SOURCE        \
3694                      -D_RESEARCH_SOURCE         \
3695                      -DFD_SETSIZE=96            \
3696                      -DHAVE_SOCK_OPTS
3697         add_compat strtod.o strtod=avpriv_strtod
3698         network_extralibs='-lbsd'
3699         exeobjs=compat/plan9/main.o
3700         disable ffserver
3701         cp_f='cp'
3702         ;;
3703     none)
3704         ;;
3705     *)
3706         die "Unknown OS '$target_os'."
3707         ;;
3708 esac
3709
3710 # determine libc flavour
3711
3712 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3713 if check_cpp_condition features.h "defined __UCLIBC__"; then
3714     libc_type=uclibc
3715     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3716 elif check_cpp_condition features.h "defined __GLIBC__"; then
3717     libc_type=glibc
3718     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3719 # MinGW headers can be installed on Cygwin, so check for newlib first.
3720 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3721     libc_type=newlib
3722     add_cppflags -U__STRICT_ANSI__
3723 elif check_header _mingw.h; then
3724     libc_type=mingw
3725     check_cpp_condition _mingw.h \
3726         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3727             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3728         die "ERROR: MinGW runtime version must be >= 3.15."
3729     add_cppflags -U__STRICT_ANSI__
3730     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3731             __MINGW64_VERSION_MAJOR < 3"; then
3732         add_compat msvcrt/snprintf.o
3733         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3734     else
3735         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3736     fi
3737 elif check_func_headers stdlib.h _get_doserrno; then
3738     libc_type=msvcrt
3739     add_compat strtod.o strtod=avpriv_strtod
3740     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3741                                  _snprintf=avpriv_snprintf  \
3742                                  vsnprintf=avpriv_vsnprintf
3743     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3744     # 0x601 by default unless something else is set by the user.
3745     # This can easily lead to us detecting functions only present
3746     # in such new versions and producing binaries requiring windows 7.0.
3747     # Therefore explicitly set the default to XP unless the user has
3748     # set something else on the command line.
3749     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3750 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3751     libc_type=klibc
3752 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3753     libc_type=bionic
3754     add_compat strtod.o strtod=avpriv_strtod
3755 fi
3756
3757 test -n "$libc_type" && enable $libc_type
3758
3759 # hacks for compiler/libc/os combinations
3760
3761 if enabled_all tms470 glibc; then
3762     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3763     add_cppflags -D__USER_LABEL_PREFIX__=
3764     add_cppflags -D__builtin_memset=memset
3765     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3766     add_cflags   -pds=48    # incompatible redefinition of macro
3767 fi
3768
3769 if enabled_all ccc glibc; then
3770     add_ldflags -Wl,-z,now  # calls to libots crash without this
3771 fi
3772
3773 esc(){
3774     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3775 }
3776
3777 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3778
3779 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3780
3781 set_default $PATHS_LIST
3782 set_default nm
3783
3784 # we need to build at least one lib type
3785 if ! enabled_any static shared; then
3786     cat <<EOF
3787 At least one library type must be built.
3788 Specify --enable-static to build the static libraries or --enable-shared to
3789 build the shared libraries as well. To only build the shared libraries specify
3790 --disable-static in addition to --enable-shared.
3791 EOF
3792     exit 1;
3793 fi
3794
3795 # backward compatibility layer for incompatible_libav/fork_abi
3796 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3797 enabled incompatible_libav_abi && enable incompatible_fork_abi
3798
3799 die_license_disabled() {
3800     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3801 }
3802
3803 die_license_disabled_gpl() {
3804     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3805 }
3806
3807 die_license_disabled gpl frei0r
3808 die_license_disabled gpl libcdio
3809 die_license_disabled gpl libutvideo
3810 die_license_disabled gpl libvidstab
3811 die_license_disabled gpl libx264
3812 die_license_disabled gpl libxavs
3813 die_license_disabled gpl libxvid
3814 die_license_disabled gpl libzvbi
3815 die_license_disabled gpl x11grab
3816
3817 die_license_disabled nonfree libaacplus
3818 die_license_disabled nonfree libfaac
3819 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3820 enabled gpl && die_license_disabled_gpl nonfree openssl
3821
3822 die_license_disabled version3 libopencore_amrnb
3823 die_license_disabled version3 libopencore_amrwb
3824 die_license_disabled version3 libvo_aacenc
3825 die_license_disabled version3 libvo_amrwbenc
3826
3827 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3828
3829 disabled optimizations || check_cflags -fomit-frame-pointer
3830
3831 enable_weak_pic() {
3832     disabled pic && return
3833     enable pic
3834     add_cppflags -DPIC
3835     case "$target_os" in
3836     mingw*|cygwin*)
3837         ;;
3838     *)
3839         add_cflags -fPIC
3840         ;;
3841     esac
3842     add_asflags  -fPIC
3843 }
3844
3845 enabled pic && enable_weak_pic
3846
3847 check_cc <<EOF || die "Symbol mangling check failed."
3848 int ff_extern;
3849 EOF
3850 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3851 extern_prefix=${sym%%ff_extern*}
3852
3853 check_cc <<EOF && enable_weak inline_asm
3854 void foo(void) { __asm__ volatile ("" ::); }
3855 EOF
3856
3857 _restrict=
3858 for restrict_keyword in restrict __restrict__ __restrict; do
3859     check_cc <<EOF && _restrict=$restrict_keyword && break
3860 void foo(char * $restrict_keyword p);
3861 EOF
3862 done
3863
3864 check_cc <<EOF && enable pragma_deprecated
3865 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3866 EOF
3867
3868 check_cc <<EOF && enable attribute_packed
3869 struct { int x; } __attribute__((packed)) x;
3870 EOF
3871
3872 check_cc <<EOF && enable attribute_may_alias
3873 union { int x; } __attribute__((may_alias)) x;
3874 EOF
3875
3876 check_cc <<EOF || die "endian test failed"
3877 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3878 EOF
3879 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3880
3881 check_inline_asm inline_asm_labels '"1:\n"'
3882
3883 if enabled alpha; then
3884
3885     check_cflags -mieee
3886
3887 elif enabled arm; then
3888
3889     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3890 float func(float a, float b){ return a+b; }
3891 EOF
3892
3893     enabled thumb && check_cflags -mthumb || check_cflags -marm
3894     nogas=die
3895
3896     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3897         enable vfp_args
3898     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3899         case "${cross_prefix:-$cc}" in
3900             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3901             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3902 __asm__ (".eabi_attribute 28, 1");
3903 int main(void) { return 0; }
3904 EOF
3905         esac
3906         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3907     fi
3908
3909     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3910     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3911     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3912     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3913     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3914     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3915
3916     [ $target_os = linux ] ||
3917         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3918             $ARCH_EXT_LIST_ARM
3919
3920     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3921     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3922
3923     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3924
3925 elif enabled mips; then
3926
3927     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3928     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3929      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3930     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3931      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3932     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3933      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3934     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3935      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3936
3937 elif enabled parisc; then
3938
3939     if enabled gcc; then
3940         case $($cc -dumpversion) in
3941             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3942         esac
3943     fi
3944
3945 elif enabled ppc; then
3946
3947     enable local_aligned_8 local_aligned_16
3948
3949     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3950     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3951     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3952     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3953
3954     # AltiVec flags: The FSF version of GCC differs from the Apple version
3955     if enabled altivec; then
3956         if ! enabled_any pic ppc64; then
3957             nogas=warn
3958         fi
3959         check_cflags -maltivec -mabi=altivec &&
3960         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3961         check_cflags -faltivec
3962
3963         # check if our compiler supports Motorola AltiVec C API
3964         check_cc <<EOF || disable altivec
3965 $inc_altivec_h
3966 int main(void) {
3967     vector signed int v1 = (vector signed int) { 0 };
3968     vector signed int v2 = (vector signed int) { 1 };
3969     v1 = vec_add(v1, v2);
3970     return 0;
3971 }
3972 EOF
3973
3974         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3975     fi
3976
3977 elif enabled sparc; then
3978
3979     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3980
3981 elif enabled x86; then
3982
3983     check_builtin rdtsc    intrin.h   "__rdtsc()"
3984     check_builtin mm_empty mmintrin.h "_mm_empty()"
3985
3986     enable local_aligned_8 local_aligned_16
3987
3988     # check whether EBP is available on x86
3989     # As 'i' is stored on the stack, this program will crash
3990     # if the base pointer is used to access it because the
3991     # base pointer is cleared in the inline assembly code.
3992     check_exec_crash <<EOF && enable ebp_available
3993 volatile int i=0;
3994 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3995 return i;
3996 EOF
3997
3998     # check whether EBX is available on x86
3999     check_inline_asm ebx_available '""::"b"(0)' &&
4000         check_inline_asm ebx_available '"":::"%ebx"'
4001
4002     # check whether xmm clobbers are supported
4003     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4004
4005     # check whether binutils is new enough to compile SSSE3/MMXEXT
4006     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4007     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4008
4009     if ! disabled_any asm mmx yasm; then
4010         if check_cmd $yasmexe --version; then
4011             enabled x86_64 && yasm_extra="-m amd64"
4012             yasm_debug="-g dwarf2"
4013         elif check_cmd nasm -v; then
4014             yasmexe=nasm
4015             yasm_debug="-g -F dwarf"
4016             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4017         fi
4018
4019         YASMFLAGS="-f $objformat $yasm_extra"
4020         enabled pic               && append YASMFLAGS "-DPIC"
4021         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4022         case "$objformat" in
4023             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4024         esac
4025
4026         check_yasm "movbe ecx, [5]" && enable yasm ||
4027             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4028         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4029         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4030         check_yasm "CPU amdnop" && enable cpunop
4031     fi
4032
4033     case "$cpu" in
4034         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4035             disable fast_clz
4036         ;;
4037     esac
4038
4039 fi
4040
4041 if enabled asm; then
4042     as=${gas:=$as}
4043     check_as <<EOF && enable gnu_as || \
4044         $nogas "GNU assembler not found, install gas-preprocessor"
4045 .macro m n
4046 \n: .int 0
4047 .endm
4048 m x
4049 EOF
4050 fi
4051
4052 check_ldflags -Wl,--as-needed
4053
4054 if check_func dlopen; then
4055     ldl=
4056 elif check_func dlopen -ldl; then
4057     ldl=-ldl
4058 fi
4059
4060 if ! disabled network; then
4061     check_type "sys/types.h sys/socket.h" socklen_t
4062     check_type netdb.h "struct addrinfo"
4063     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4064     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4065     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4066     check_type netinet/in.h "struct sockaddr_in6"
4067     check_type poll.h "struct pollfd"
4068     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4069     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4070     check_type netinet/sctp.h "struct sctp_event_subscribe"
4071     check_func getaddrinfo $network_extralibs
4072     check_func getservbyport $network_extralibs
4073     # Prefer arpa/inet.h over winsock2
4074     if check_header arpa/inet.h ; then
4075         check_func closesocket
4076     elif check_header winsock2.h ; then
4077         check_func_headers winsock2.h closesocket -lws2 &&
4078             network_extralibs="-lws2" ||
4079         { check_func_headers winsock2.h closesocket -lws2_32 &&
4080             network_extralibs="-lws2_32"; }
4081         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4082         check_type ws2tcpip.h socklen_t
4083         check_type ws2tcpip.h "struct addrinfo"
4084         check_type ws2tcpip.h "struct group_source_req"
4085         check_type ws2tcpip.h "struct ip_mreq_source"
4086         check_type ws2tcpip.h "struct ipv6_mreq"
4087         check_type winsock2.h "struct pollfd"
4088         check_type ws2tcpip.h "struct sockaddr_in6"
4089         check_type ws2tcpip.h "struct sockaddr_storage"
4090         check_struct winsock2.h "struct sockaddr" sa_len
4091     else
4092         disable network
4093     fi
4094 fi
4095
4096 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4097 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4098
4099 check_func  access
4100 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4101 check_func  fcntl
4102 check_func  fork
4103 check_func_headers stdlib.h getenv
4104 check_func  gethrtime
4105 check_func  getopt
4106 check_func  getrusage
4107 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4108 check_func  gettimeofday
4109 check_func  inet_aton $network_extralibs
4110 check_func  isatty
4111 check_func  localtime_r
4112 check_func  ${malloc_prefix}memalign            && enable memalign
4113 check_func  mkstemp
4114 check_func  mmap
4115 check_func  mprotect
4116 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4117 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4118 check_func  setrlimit
4119 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4120 check_func  strerror_r
4121 check_func  sched_getaffinity
4122 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4123 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4124 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4125 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4126 check_builtin sarestart signal.h "SA_RESTART"
4127 check_func  sysconf
4128 check_func  sysctl
4129 check_func  usleep
4130 check_func_headers conio.h kbhit
4131 check_func_headers windows.h PeekNamedPipe
4132 check_func_headers io.h setmode
4133 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4134 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4135 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4136 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4137 check_func_headers windows.h GetProcessAffinityMask
4138 check_func_headers windows.h GetProcessTimes
4139 check_func_headers windows.h GetSystemTimeAsFileTime
4140 check_func_headers windows.h MapViewOfFile
4141 check_func_headers windows.h SetConsoleTextAttribute
4142 check_func_headers windows.h Sleep
4143 check_func_headers windows.h VirtualAlloc
4144 check_func_headers glob.h glob
4145 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4146
4147 check_header cl/cl.h
4148 check_header direct.h
4149 check_header dlfcn.h
4150 check_header dxva.h
4151 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4152 check_header io.h
4153 check_header libcrystalhd/libcrystalhd_if.h
4154 check_header malloc.h
4155 check_header poll.h
4156 check_header sys/mman.h
4157 check_header sys/param.h
4158 check_header sys/resource.h
4159 check_header sys/select.h
4160 check_header sys/time.h
4161 check_header sys/un.h
4162 check_header termios.h
4163 check_header unistd.h
4164 check_header vdpau/vdpau.h
4165 check_header vdpau/vdpau_x11.h
4166 check_header VideoDecodeAcceleration/VDADecoder.h
4167 check_header windows.h
4168 check_header X11/extensions/XvMClib.h
4169 check_header asm/types.h
4170
4171 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4172 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4173
4174 if ! disabled w32threads && ! enabled pthreads; then
4175     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4176 fi
4177
4178 # check for some common methods of building with pthread support
4179 # do this before the optional library checks as some of them require pthreads
4180 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4181     enable pthreads
4182     if check_func pthread_create; then
4183         :
4184     elif check_func pthread_create -pthread; then
4185         add_cflags -pthread
4186         add_extralibs -pthread
4187     elif check_func pthread_create -pthreads; then
4188         add_cflags -pthreads
4189         add_extralibs -pthreads
4190     elif check_func pthread_create -lpthreadGC2; then
4191         add_extralibs -lpthreadGC2
4192     elif ! check_lib pthread.h pthread_create -lpthread; then
4193         disable pthreads
4194     fi
4195 fi
4196
4197 for thread in $THREADS_LIST; do
4198     if enabled $thread; then
4199         test -n "$thread_type" &&
4200             die "ERROR: Only one thread type must be selected." ||
4201             thread_type="$thread"
4202     fi
4203 done
4204
4205 if enabled pthreads; then
4206   check_func pthread_cancel
4207 fi
4208
4209 enabled sync_val_compare_and_swap && enable atomics_gcc
4210 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4211 enabled MemoryBarrier && enable atomics_win32
4212
4213 check_lib math.h sin -lm && LIBM="-lm"
4214 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4215
4216 atan2f_args=2
4217 ldexpf_args=2
4218 powf_args=2
4219
4220 for func in $MATH_FUNCS; do
4221     eval check_mathfunc $func \${${func}_args:-1}
4222 done
4223
4224 # these are off by default, so fail if requested and not available
4225 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4226                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4227                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4228 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4229 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4230 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4231 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4232 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4233 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4234 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4235 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4236 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4237                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4238                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4239 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4240 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4241 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4242 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"
4243 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4244 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4245 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4246 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4247                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4248                                done || die "ERROR: libgsm not found"; }
4249 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4250 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4251 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4252 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4253 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4254 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4255 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4256 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4257                                check_lib openjpeg.h opj_version -lopenjpeg ||
4258                                die "ERROR: libopenjpeg not found"; }
4259 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4260 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4261 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4262 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4263 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4264 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4265 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4266 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4267 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4268 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4269     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4270     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4271 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4272 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4273                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4274                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4275 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4276 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4277 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4278 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4279 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4280 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4281 enabled libvpx            && {
4282     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4283                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4284     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4285                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4286     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4287     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4288 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4289 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4290                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4291                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4292 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4293 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4294 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4295 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4296 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4297                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4298                                die "ERROR: openal not found"; } &&
4299                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4300                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4301 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4302                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4303                                die "ERROR: opencl not found"; } &&
4304                              { ! enabled_any w32threads os2threads ||
4305                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4306                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4307                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4308                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4309 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4310                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4311                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4312                                die "ERROR: openssl not found"; }
4313
4314 if enabled gnutls; then
4315     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4316     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4317 fi
4318
4319 # libdc1394 check
4320 if enabled libdc1394; then
4321     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4322         enable libdc1394_2; } ||
4323     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4324         enable libdc1394_1; } ||
4325     die "ERROR: No version of libdc1394 found "
4326 fi
4327
4328 SDL_CONFIG="${cross_prefix}sdl-config"
4329 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4330     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4331     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4332     enable sdl
4333 else
4334   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4335     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4336     sdl_libs=$("${SDL_CONFIG}" --libs)
4337     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4338     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4339     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4340     enable sdl
4341   fi
4342 fi
4343 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4344
4345 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4346 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4347 perl --version > /dev/null 2>&1 && enable perl || disable perl
4348 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4349 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4350
4351 check_header linux/fb.h
4352 check_header linux/videodev.h
4353 check_header linux/videodev2.h
4354 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4355
4356 check_header sys/videoio.h
4357
4358 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4359 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4360 # w32api 3.12 had it defined wrong
4361 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4362
4363 check_type "dshow.h" IBaseFilter
4364
4365 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4366 { check_header dev/bktr/ioctl_meteor.h &&
4367   check_header dev/bktr/ioctl_bt848.h; } ||
4368 { check_header machine/ioctl_meteor.h &&
4369   check_header machine/ioctl_bt848.h; } ||
4370 { check_header dev/video/meteor/ioctl_meteor.h &&
4371   check_header dev/video/bktr/ioctl_bt848.h; } ||
4372 check_header dev/ic/bt8xx.h
4373
4374 check_header sndio.h
4375 if check_struct sys/soundcard.h audio_buf_info bytes; then
4376     enable_safe sys/soundcard.h
4377 else
4378     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4379     #include <sys/soundcard.h>
4380     audio_buf_info abc;
4381 EOF
4382 fi
4383 check_header soundcard.h
4384
4385 enabled_any alsa_indev alsa_outdev &&
4386     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4387
4388 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4389     check_func jack_port_get_latency_range -ljack
4390
4391 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4392
4393 if enabled libcdio; then
4394     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4395     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4396     die "ERROR: libcdio-paranoia not found"
4397 fi
4398
4399 enabled x11grab                                           &&
4400 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4401 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4402 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4403
4404 enabled vaapi &&
4405     check_lib va/va.h vaInitialize -lva ||
4406     disable vaapi
4407
4408 enabled vdpau &&
4409     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4410     disable vdpau
4411
4412 # Funny iconv installations are not unusual, so check it after all flags have been set
4413 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4414
4415 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4416
4417 # add some useful compiler flags if supported
4418 check_cflags -Wdeclaration-after-statement
4419 check_cflags -Wall
4420 check_cflags -Wno-parentheses
4421 check_cflags -Wno-switch
4422 check_cflags -Wno-format-zero-length
4423 check_cflags -Wdisabled-optimization
4424 check_cflags -Wpointer-arith
4425 check_cflags -Wredundant-decls
4426 check_cflags -Wno-pointer-sign
4427 check_cflags -Wwrite-strings
4428 check_cflags -Wtype-limits
4429 check_cflags -Wundef
4430 check_cflags -Wmissing-prototypes
4431 check_cflags -Wno-pointer-to-int-cast
4432 check_cflags -Wstrict-prototypes
4433 enabled extra_warnings && check_cflags -Winline
4434
4435 # add some linker flags
4436 check_ldflags -Wl,--warn-common
4437 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4438 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4439
4440 enabled xmm_clobber_test &&
4441     check_ldflags -Wl,--wrap,avcodec_open2              \
4442                   -Wl,--wrap,avcodec_decode_audio4      \
4443                   -Wl,--wrap,avcodec_decode_video2      \
4444                   -Wl,--wrap,avcodec_decode_subtitle2   \
4445                   -Wl,--wrap,avcodec_encode_audio2      \
4446                   -Wl,--wrap,avcodec_encode_video       \
4447                   -Wl,--wrap,avcodec_encode_video2      \
4448                   -Wl,--wrap,avcodec_encode_subtitle    \
4449                   -Wl,--wrap,sws_scale ||
4450     disable xmm_clobber_test
4451
4452 echo "X{};" > $TMPV
4453 if test_ldflags -Wl,--version-script,$TMPV; then
4454     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4455     check_cc <<EOF && enable symver_asm_label
4456 void ff_foo(void) __asm__ ("av_foo@VERSION");
4457 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4458 EOF
4459     check_cc <<EOF && enable symver_gnu_asm
4460 __asm__(".symver ff_foo,av_foo@VERSION");
4461 void ff_foo(void) {}
4462 EOF
4463 fi
4464
4465 if [ -z "$optflags" ]; then
4466     if enabled small; then
4467         optflags=$cflags_size
4468     elif enabled optimizations; then
4469         optflags=$cflags_speed
4470     else
4471         optflags=$cflags_noopt
4472     fi
4473 fi
4474
4475 check_optflags(){
4476     check_cflags "$@"
4477     enabled lto && check_ldflags "$@"
4478 }
4479
4480
4481 if enabled lto; then
4482     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4483     check_cflags  -flto
4484     check_ldflags -flto $cpuflags
4485 fi
4486
4487 check_optflags $optflags
4488 check_optflags -fno-math-errno
4489 check_optflags -fno-signed-zeros
4490
4491 enabled ftrapv && check_cflags -ftrapv
4492
4493 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4494 int x;
4495 EOF
4496
4497
4498 if enabled icc; then
4499     # Just warnings, no remarks
4500     check_cflags -w1
4501     # -wd: Disable following warnings
4502     # 144, 167, 556: -Wno-pointer-sign
4503     # 188: enumerated type mixed with another type
4504     # 1292: attribute "foo" ignored
4505     # 1419: external declaration in primary source file
4506     # 10006: ignoring unknown option -fno-signed-zeros
4507     # 10148: ignoring unknown option -Wno-parentheses
4508     # 10156: ignoring option '-W'; no argument required
4509     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4510     # 11030: Warning unknown option --as-needed
4511     # 10156: ignoring option '-export'; no argument required
4512     check_ldflags -wd10156,11030
4513     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4514     enable ebp_available
4515     if enabled x86_32; then
4516         icc_version=$($cc -dumpversion)
4517         test ${icc_version%%.*} -ge 11 &&
4518             check_cflags -falign-stack=maintain-16-byte ||
4519             disable aligned_stack
4520     fi
4521 elif enabled ccc; then
4522     # disable some annoying warnings
4523     add_cflags -msg_disable bitnotint
4524     add_cflags -msg_disable mixfuncvoid
4525     add_cflags -msg_disable nonstandcast
4526     add_cflags -msg_disable unsupieee
4527 elif enabled gcc; then
4528     check_optflags -fno-tree-vectorize
4529     check_cflags -Werror=implicit-function-declaration
4530     check_cflags -Werror=missing-prototypes
4531     check_cflags -Werror=return-type
4532     check_cflags -Werror=vla
4533 elif enabled llvm_gcc; then
4534     check_cflags -mllvm -stack-alignment=16
4535 elif enabled clang; then
4536     check_cflags -mllvm -stack-alignment=16
4537     check_cflags -Qunused-arguments
4538     check_cflags -Werror=implicit-function-declaration
4539     check_cflags -Werror=missing-prototypes
4540     check_cflags -Werror=return-type
4541 elif enabled cparser; then
4542     add_cflags -Wno-missing-variable-declarations
4543     add_cflags -Wno-empty-statement
4544 elif enabled armcc; then
4545     # 2523: use of inline assembler is deprecated
4546     add_cflags -W${armcc_opt},--diag_suppress=2523
4547     add_cflags -W${armcc_opt},--diag_suppress=1207
4548     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4549     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4550     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4551     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4552 elif enabled tms470; then
4553     add_cflags -pds=824 -pds=837
4554 elif enabled pathscale; then
4555     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4556 elif enabled_any msvc icl; then
4557     enabled x86_32 && disable aligned_stack
4558     enabled_all x86_32 debug && add_cflags -Oy-
4559     enabled debug && add_ldflags -debug
4560     enable pragma_deprecated
4561     if enabled icl; then
4562         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4563         # (correctly) on icl 13.x.
4564         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4565             add_cflags -Qansi-alias
4566         # icl will pass the inline asm tests but inline asm is currently
4567         # not supported (build will fail)
4568         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4569         disable inline_asm
4570     fi
4571 fi
4572
4573 case $target_os in
4574     osf1)
4575         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4576     ;;
4577     plan9)
4578         add_cppflags -Dmain=plan9_main
4579     ;;
4580 esac
4581
4582 enable frame_thread_encoder
4583 enabled_any $THREADS_LIST      && enable threads
4584 enabled_any $ATOMICS_LIST      && enable atomics_native
4585
4586 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4587
4588 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4589
4590 check_deps $CONFIG_LIST       \
4591            $CONFIG_EXTRA      \
4592            $HAVE_LIST         \
4593            $ALL_COMPONENTS    \
4594
4595
4596 if test $target_os = "haiku"; then
4597     disable memalign
4598     disable posix_memalign
4599 fi
4600
4601 ! enabled_any memalign posix_memalign aligned_malloc &&
4602     enabled_any $need_memalign && enable memalign_hack
4603
4604 # add_dep lib dep
4605 # -> enable ${lib}_deps_${dep}
4606 # -> add $dep to ${lib}_deps only once
4607 add_dep() {
4608     lib=$1
4609     dep=$2
4610     enabled "${lib}_deps_${dep}" && return 0
4611     enable  "${lib}_deps_${dep}"
4612     prepend "${lib}_deps" $dep
4613 }
4614
4615 # merge deps lib components
4616 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4617 merge_deps() {
4618     lib=$1
4619     shift
4620     for comp in $*; do
4621         enabled $comp || continue
4622         eval "dep=\"\$${comp}_deps\""
4623         for d in $dep; do
4624             add_dep $lib $d
4625         done
4626     done
4627 }
4628
4629 merge_deps libavfilter $FILTER_LIST
4630
4631 echo "install prefix            $prefix"
4632 echo "source path               $source_path"
4633 echo "C compiler                $cc"
4634 echo "ARCH                      $arch ($cpu)"
4635 if test "$build_suffix" != ""; then
4636     echo "build suffix              $build_suffix"
4637 fi
4638 if test "$progs_suffix" != ""; then
4639     echo "progs suffix              $progs_suffix"
4640 fi
4641 if test "$extra_version" != ""; then
4642     echo "version string suffix     $extra_version"
4643 fi
4644 echo "big-endian                ${bigendian-no}"
4645 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4646 if enabled x86; then
4647     echo "${yasmexe}                      ${yasm-no}"
4648     echo "MMX enabled               ${mmx-no}"
4649     echo "MMXEXT enabled            ${mmxext-no}"
4650     echo "3DNow! enabled            ${amd3dnow-no}"
4651     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4652     echo "SSE enabled               ${sse-no}"
4653     echo "SSSE3 enabled             ${ssse3-no}"
4654     echo "AVX enabled               ${avx-no}"
4655     echo "FMA4 enabled              ${fma4-no}"
4656     echo "i686 features enabled     ${i686-no}"
4657     echo "CMOV is fast              ${fast_cmov-no}"
4658     echo "EBX available             ${ebx_available-no}"
4659     echo "EBP available             ${ebp_available-no}"
4660 fi
4661 if enabled arm; then
4662     echo "ARMv5TE enabled           ${armv5te-no}"
4663     echo "ARMv6 enabled             ${armv6-no}"
4664     echo "ARMv6T2 enabled           ${armv6t2-no}"
4665     echo "VFP enabled               ${vfp-no}"
4666     echo "NEON enabled              ${neon-no}"
4667     echo "THUMB enabled             ${thumb-no}"
4668 fi
4669 if enabled mips; then
4670     echo "MIPS FPU enabled          ${mipsfpu-no}"
4671     echo "MIPS32R2 enabled          ${mips32r2-no}"
4672     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4673     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4674 fi
4675 if enabled ppc; then
4676     echo "AltiVec enabled           ${altivec-no}"
4677     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4678     echo "dcbzl available           ${dcbzl-no}"
4679 fi
4680 if enabled sparc; then
4681     echo "VIS enabled               ${vis-no}"
4682 fi
4683 echo "debug symbols             ${debug-no}"
4684 echo "strip symbols             ${stripping-no}"
4685 echo "optimize for size         ${small-no}"
4686 echo "optimizations             ${optimizations-no}"
4687 echo "static                    ${static-no}"
4688 echo "shared                    ${shared-no}"
4689 echo "postprocessing support    ${postproc-no}"
4690 echo "new filter support        ${avfilter-no}"
4691 echo "network support           ${network-no}"
4692 echo "threading support         ${thread_type-no}"
4693 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4694 echo "SDL support               ${sdl-no}"
4695 echo "opencl enabled            ${opencl-no}"
4696 echo "libzvbi enabled           ${libzvbi-no}"
4697 echo "texi2html enabled         ${texi2html-no}"
4698 echo "perl enabled              ${perl-no}"
4699 echo "pod2man enabled           ${pod2man-no}"
4700 echo "makeinfo enabled          ${makeinfo-no}"
4701 test -n "$random_seed" &&
4702     echo "random seed               ${random_seed}"
4703 echo
4704
4705 echo "External libraries:"
4706 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4707 echo
4708
4709 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4710     echo "Enabled ${type}s:"
4711     eval list=\$$(toupper $type)_LIST
4712     print_enabled '_*' $list | print_3_columns
4713     echo
4714 done
4715
4716 license="LGPL version 2.1 or later"
4717 if enabled nonfree; then
4718     license="nonfree and unredistributable"
4719 elif enabled gplv3; then
4720     license="GPL version 3 or later"
4721 elif enabled lgplv3; then
4722     license="LGPL version 3 or later"
4723 elif enabled gpl; then
4724     license="GPL version 2 or later"
4725 fi
4726
4727 echo "License: $license"
4728
4729 echo "Creating config.mak, config.h, and doc/config.texi..."
4730
4731 test -e Makefile || $ln_s "$source_path/Makefile" .
4732
4733 enabled stripping || strip="echo skipping strip"
4734
4735 config_files="$TMPH config.mak doc/config.texi"
4736
4737 cat > config.mak <<EOF
4738 # Automatically generated by configure - do not modify!
4739 ifndef FFMPEG_CONFIG_MAK
4740 FFMPEG_CONFIG_MAK=1
4741 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4742 prefix=$prefix
4743 LIBDIR=\$(DESTDIR)$libdir
4744 SHLIBDIR=\$(DESTDIR)$shlibdir
4745 INCDIR=\$(DESTDIR)$incdir
4746 BINDIR=\$(DESTDIR)$bindir
4747 DATADIR=\$(DESTDIR)$datadir
4748 DOCDIR=\$(DESTDIR)$docdir
4749 MANDIR=\$(DESTDIR)$mandir
4750 SRC_PATH=$source_path
4751 ifndef MAIN_MAKEFILE
4752 SRC_PATH:=\$(SRC_PATH:.%=..%)
4753 endif
4754 CC_IDENT=$cc_ident
4755 ARCH=$arch
4756 CC=$cc
4757 CXX=$cxx
4758 AS=$as
4759 LD=$ld
4760 DEPCC=$dep_cc
4761 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4762 DEPAS=$as
4763 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4764 YASM=$yasmexe
4765 DEPYASM=$yasmexe
4766 AR=$ar
4767 ARFLAGS=$arflags
4768 AR_O=$ar_o
4769 RANLIB=$ranlib
4770 STRIP=$strip
4771 CP=cp -p
4772 LN_S=$ln_s
4773 CPPFLAGS=$CPPFLAGS
4774 CFLAGS=$CFLAGS
4775 CXXFLAGS=$CXXFLAGS
4776 ASFLAGS=$ASFLAGS
4777 AS_C=$AS_C
4778 AS_O=$AS_O
4779 CC_C=$CC_C
4780 CC_E=$CC_E
4781 CC_O=$CC_O
4782 CXX_C=$CXX_C
4783 CXX_O=$CXX_O
4784 LD_O=$LD_O
4785 LD_LIB=$LD_LIB
4786 LD_PATH=$LD_PATH
4787 DLLTOOL=$dlltool
4788 LDFLAGS=$LDFLAGS
4789 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4790 YASMFLAGS=$YASMFLAGS
4791 BUILDSUF=$build_suffix
4792 PROGSSUF=$progs_suffix
4793 FULLNAME=$FULLNAME
4794 LIBPREF=$LIBPREF
4795 LIBSUF=$LIBSUF
4796 LIBNAME=$LIBNAME
4797 SLIBPREF=$SLIBPREF
4798 SLIBSUF=$SLIBSUF
4799 EXESUF=$EXESUF
4800 EXTRA_VERSION=$extra_version
4801 CCDEP=$CCDEP
4802 CXXDEP=$CXXDEP
4803 CCDEP_FLAGS=$CCDEP_FLAGS
4804 ASDEP=$ASDEP
4805 ASDEP_FLAGS=$ASDEP_FLAGS
4806 CC_DEPFLAGS=$CC_DEPFLAGS
4807 AS_DEPFLAGS=$AS_DEPFLAGS
4808 HOSTCC=$host_cc
4809 HOSTLD=$host_ld
4810 HOSTCFLAGS=$host_cflags
4811 HOSTCPPFLAGS=$host_cppflags
4812 HOSTEXESUF=$HOSTEXESUF
4813 HOSTLDFLAGS=$host_ldflags
4814 HOSTLIBS=$host_libs
4815 DEPHOSTCC=$host_cc
4816 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4817 HOSTCCDEP=$HOSTCCDEP
4818 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4819 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4820 HOSTCC_C=$HOSTCC_C
4821 HOSTCC_O=$HOSTCC_O
4822 HOSTLD_O=$HOSTLD_O
4823 TARGET_EXEC=$target_exec $target_exec_args
4824 TARGET_PATH=$target_path
4825 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4826 LIBS-ffplay=$sdl_libs
4827 CFLAGS-ffplay=$sdl_cflags
4828 ZLIB=$($ldflags_filter -lz)
4829 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4830 EXTRALIBS=$extralibs
4831 COMPAT_OBJS=$compat_objs
4832 EXEOBJS=$exeobjs
4833 INSTALL=$install
4834 LIBTARGET=${LIBTARGET}
4835 SLIBNAME=${SLIBNAME}
4836 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4837 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4838 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4839 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4840 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4841 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4842 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4843 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4844 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4845 NOREDZONE_FLAGS=$noredzone_flags
4846 EOF
4847
4848 get_version(){
4849     lcname=lib${1}
4850     name=$(toupper $lcname)
4851     file=$source_path/$lcname/version.h
4852     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4853     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4854     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4855     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4856     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4857 }
4858
4859 map 'get_version $v' $LIBRARY_LIST
4860
4861 cat > $TMPH <<EOF
4862 /* Automatically generated by configure - do not modify! */
4863 #ifndef FFMPEG_CONFIG_H
4864 #define FFMPEG_CONFIG_H
4865 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4866 #define FFMPEG_LICENSE "$(c_escape $license)"
4867 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4868 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4869 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4870 #define av_restrict $_restrict
4871 #define EXTERN_PREFIX "${extern_prefix}"
4872 #define EXTERN_ASM ${extern_prefix}
4873 #define SLIBSUF "$SLIBSUF"
4874 #define HAVE_MMX2 HAVE_MMXEXT
4875 EOF
4876
4877 test -n "$assert_level" &&
4878     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4879
4880 test -n "$malloc_prefix" &&
4881     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4882
4883 if enabled yasm; then
4884     append config_files $TMPASM
4885     printf '' >$TMPASM
4886 fi
4887
4888 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4889
4890
4891 mkdir -p doc
4892 echo "@c auto-generated by configure" > doc/config.texi
4893
4894 print_config ARCH_   "$config_files" $ARCH_LIST
4895 print_config HAVE_   "$config_files" $HAVE_LIST
4896 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4897                                      $CONFIG_EXTRA      \
4898                                      $ALL_COMPONENTS    \
4899
4900 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4901 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4902
4903 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4904 cp_if_changed $TMPH config.h
4905 touch .config
4906
4907 enabled yasm && cp_if_changed $TMPASM config.asm
4908
4909 cat > $TMPH <<EOF
4910 /* Generated by ffconf */
4911 #ifndef AVUTIL_AVCONFIG_H
4912 #define AVUTIL_AVCONFIG_H
4913 EOF
4914
4915 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4916
4917 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4918
4919 cp_if_changed $TMPH libavutil/avconfig.h
4920
4921 if test -n "$WARNINGS"; then
4922     printf "\n$WARNINGS"
4923     enabled fatal_warnings && exit 1
4924 fi
4925
4926 # build pkg-config files
4927
4928 pkgconfig_generate(){
4929     name=$1
4930     shortname=${name#lib}${build_suffix}
4931     comment=$2
4932     version=$3
4933     libs=$4
4934     requires=$5
4935     enabled ${name#lib} || return 0
4936     mkdir -p $name
4937     cat <<EOF > $name/$name${build_suffix}.pc
4938 prefix=$prefix
4939 exec_prefix=\${prefix}
4940 libdir=$libdir
4941 includedir=$incdir
4942
4943 Name: $name
4944 Description: $comment
4945 Version: $version
4946 Requires: $(enabled shared || echo $requires)
4947 Requires.private: $(enabled shared && echo $requires)
4948 Conflicts:
4949 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4950 Libs.private: $(enabled shared && echo $libs)
4951 Cflags: -I\${includedir}
4952 EOF
4953
4954 mkdir -p doc/examples/pc-uninstalled
4955 includedir=${source_path}
4956 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4957     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4958 prefix=
4959 exec_prefix=
4960 libdir=\${pcfiledir}/../../../$name
4961 includedir=${includedir}
4962
4963 Name: $name
4964 Description: $comment
4965 Version: $version
4966 Requires: $requires
4967 Conflicts:
4968 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4969 Cflags: -I\${includedir}
4970 EOF
4971 }
4972
4973 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4974 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4975 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4976 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4977 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4978 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4979 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4980 lavfi_libs=${lavfi_libs%, }
4981
4982 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4983 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4984
4985 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
4986 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4987 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4988 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
4989 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4990 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4991 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4992 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4993 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4994
4995 fix_ffmpeg_remote(){
4996     git_remote_from=$1
4997     git_remote_to=$2
4998     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4999     if [ "$fixme_remote" != "" ]; then
5000         echolog "
5001 Outdated domain in git config, the official domain for ffmpeg git is since
5002 November 2011, source.ffmpeg.org, both the old and the new point to the same
5003 repository and server. To update it enter the following commands:
5004 "
5005         for remote in $fixme_remote; do
5006             echolog "git remote set-url $remote $git_remote_to"
5007         done
5008     fi
5009 }
5010
5011 if test -f "$source_path/.git/config"; then
5012     remote_from=git.videolan.org
5013     remote_to=source.ffmpeg.org
5014     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5015     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5016 fi