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 test_cflags(){
 861     log test_cflags "$@"
 862     set -- $($cflags_filter "$@")
 863     check_cc "$@" <<EOF
 864 int x;
 865 EOF
 866 }
 867
 868 check_cflags(){
 869     log check_cflags "$@"
 870     test_cflags "$@" && add_cflags "$@"
 871 }
 872
 873 check_cxxflags(){
 874     log check_cxxflags "$@"
 875     set -- $($cflags_filter "$@")
 876     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 877 int x;
 878 EOF
 879 }
 880
 881 test_ldflags(){
 882     log test_ldflags "$@"
 883     check_ld "cc" "$@" <<EOF
 884 int main(void){ return 0; }
 885 EOF
 886 }
 887
 888 check_ldflags(){
 889     log check_ldflags "$@"
 890     test_ldflags "$@" && add_ldflags "$@"
 891 }
 892
 893 check_header(){
 894     log check_header "$@"
 895     header=$1
 896     shift
 897     disable_safe $header
 898     check_cpp "$@" <<EOF && enable_safe $header
 899 #include <$header>
 900 int x;
 901 EOF
 902 }
 903
 904 check_func(){
 905     log check_func "$@"
 906     func=$1
 907     shift
 908     disable $func
 909     check_ld "cc" "$@" <<EOF && enable $func
 910 extern int $func();
 911 int main(void){ $func(); }
 912 EOF
 913 }
 914
 915 check_mathfunc(){
 916     log check_mathfunc "$@"
 917     func=$1
 918     narg=$2
 919     shift 2
 920     test $narg = 2 && args="f, g" || args="f"
 921     disable $func
 922     check_ld "cc" "$@" <<EOF && enable $func
 923 #include <math.h>
 924 float foo(float f, float g) { return $func($args); }
 925 int main(void){ return (int) foo; }
 926 EOF
 927 }
 928
 929 check_func_headers(){
 930     log check_func_headers "$@"
 931     headers=$1
 932     funcs=$2
 933     shift 2
 934     {
 935         for hdr in $headers; do
 936             echo "#include <$hdr>"
 937         done
 938         for func in $funcs; do
 939             echo "long check_$func(void) { return (long) $func; }"
 940         done
 941         echo "int main(void) { return 0; }"
 942     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 943 }
 944
 945 check_class_headers_cpp(){
 946     log check_class_headers_cpp "$@"
 947     headers=$1
 948     classes=$2
 949     shift 2
 950     {
 951         for hdr in $headers; do
 952             echo "#include <$hdr>"
 953         done
 954         echo "int main(void) { "
 955         i=1
 956         for class in $classes; do
 957             echo "$class obj$i;"
 958             i=$(expr $i + 1)
 959         done
 960         echo "return 0; }"
 961     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 962 }
 963
 964 check_cpp_condition(){
 965     log check_cpp_condition "$@"
 966     header=$1
 967     condition=$2
 968     shift 2
 969     check_cpp "$@" <<EOF
 970 #include <$header>
 971 #if !($condition)
 972 #error "unsatisfied condition: $condition"
 973 #endif
 974 EOF
 975 }
 976
 977 check_lib(){
 978     log check_lib "$@"
 979     header="$1"
 980     func="$2"
 981     shift 2
 982     check_header $header && check_func $func "$@" && add_extralibs "$@"
 983 }
 984
 985 check_lib2(){
 986     log check_lib2 "$@"
 987     headers="$1"
 988     funcs="$2"
 989     shift 2
 990     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 991 }
 992
 993 check_lib_cpp(){
 994     log check_lib_cpp "$@"
 995     headers="$1"
 996     classes="$2"
 997     shift 2
 998     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 999 }
1000
1001 check_pkg_config(){
1002     log check_pkg_config "$@"
1003     pkg="$1"
1004     headers="$2"
1005     funcs="$3"
1006     shift 3
1007     check_cmd $pkg_config --exists --print-errors $pkg || return
1008     pkg_cflags=$($pkg_config --cflags $pkg)
1009     pkg_libs=$($pkg_config --libs $pkg)
1010     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1011         set_safe ${pkg}_cflags $pkg_cflags   &&
1012         set_safe ${pkg}_libs   $pkg_libs
1013 }
1014
1015 check_exec(){
1016     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1017 }
1018
1019 check_exec_crash(){
1020     code=$(cat)
1021
1022     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1023     # are safe but may not be available everywhere.  Thus we use
1024     # raise(SIGTERM) instead.  The check is run in a subshell so we
1025     # can redirect the "Terminated" message from the shell.  SIGBUS
1026     # is not defined by standard C so it is used conditionally.
1027
1028     (check_exec "$@") >> $logfile 2>&1 <<EOF
1029 #include <signal.h>
1030 static void sighandler(int sig){
1031     raise(SIGTERM);
1032 }
1033 int foo(void){
1034     $code
1035 }
1036 int (*func_ptr)(void) = foo;
1037 int main(void){
1038     signal(SIGILL, sighandler);
1039     signal(SIGFPE, sighandler);
1040     signal(SIGSEGV, sighandler);
1041 #ifdef SIGBUS
1042     signal(SIGBUS, sighandler);
1043 #endif
1044     return func_ptr();
1045 }
1046 EOF
1047 }
1048
1049 check_type(){
1050     log check_type "$@"
1051     headers=$1
1052     type=$2
1053     shift 2
1054     disable_safe "$type"
1055     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1056 }
1057
1058 check_struct(){
1059     log check_struct "$@"
1060     headers=$1
1061     struct=$2
1062     member=$3
1063     shift 3
1064     disable_safe "${struct}_${member}"
1065     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1066         enable_safe "${struct}_${member}"
1067 }
1068
1069 check_builtin(){
1070     log check_builtin "$@"
1071     name=$1
1072     headers=$2
1073     builtin=$3
1074     shift 3
1075     disable "$name"
1076     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1077 }
1078
1079 require(){
1080     name="$1"
1081     header="$2"
1082     func="$3"
1083     shift 3
1084     check_lib $header $func "$@" || die "ERROR: $name not found"
1085 }
1086
1087 require2(){
1088     name="$1"
1089     headers="$2"
1090     func="$3"
1091     shift 3
1092     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1093 }
1094
1095 require_cpp(){
1096     name="$1"
1097     headers="$2"
1098     classes="$3"
1099     shift 3
1100     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1101 }
1102
1103 require_pkg_config(){
1104     pkg="$1"
1105     check_pkg_config "$@" || die "ERROR: $pkg not found"
1106     add_cflags    $(get_safe ${pkg}_cflags)
1107     add_extralibs $(get_safe ${pkg}_libs)
1108 }
1109
1110 hostcc_o(){
1111     eval printf '%s\\n' $HOSTCC_O
1112 }
1113
1114 check_host_cc(){
1115     log check_host_cc "$@"
1116     cat > $TMPC
1117     log_file $TMPC
1118     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1119 }
1120
1121 check_host_cppflags(){
1122     log check_host_cppflags "$@"
1123     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1124 int x;
1125 EOF
1126 }
1127
1128 check_host_cflags(){
1129     log check_host_cflags "$@"
1130     set -- $($host_cflags_filter "$@")
1131     check_host_cc "$@" <<EOF && append host_cflags "$@"
1132 int x;
1133 EOF
1134 }
1135
1136 apply(){
1137     file=$1
1138     shift
1139     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1140 }
1141
1142 cp_if_changed(){
1143     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1144     mkdir -p "$(dirname $2)"
1145     $cp_f "$1" "$2"
1146 }
1147
1148 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1149 # system-dependent things.
1150
1151 COMPONENT_LIST="
1152     bsfs
1153     decoders
1154     demuxers
1155     encoders
1156     filters
1157     hwaccels
1158     indevs
1159     muxers
1160     outdevs
1161     parsers
1162     protocols
1163 "
1164
1165 EXTERNAL_LIBRARY_LIST="
1166     avisynth
1167     bzlib
1168     crystalhd
1169     fontconfig
1170     frei0r
1171     gnutls
1172     iconv
1173     ladspa
1174     libaacplus
1175     libass
1176     libbluray
1177     libcaca
1178     libcdio
1179     libcelt
1180     libdc1394
1181     libfaac
1182     libfdk_aac
1183     libflite
1184     libfreetype
1185     libgme
1186     libgsm
1187     libiec61883
1188     libilbc
1189     libmodplug
1190     libmp3lame
1191     libnut
1192     libopencore_amrnb
1193     libopencore_amrwb
1194     libopencv
1195     libopenjpeg
1196     libopus
1197     libpulse
1198     libquvi
1199     librtmp
1200     libschroedinger
1201     libshine
1202     libsoxr
1203     libspeex
1204     libssh
1205     libstagefright_h264
1206     libtheora
1207     libtwolame
1208     libutvideo
1209     libv4l2
1210     libvidstab
1211     libvo_aacenc
1212     libvo_amrwbenc
1213     libvorbis
1214     libvpx
1215     libwavpack
1216     libx264
1217     libxavs
1218     libxvid
1219     libzmq
1220     libzvbi
1221     openal
1222     opencl
1223     openssl
1224     x11grab
1225     zlib
1226 "
1227
1228 DOCUMENT_LIST="
1229     doc
1230     htmlpages
1231     manpages
1232     podpages
1233     txtpages
1234 "
1235
1236 HWACCEL_LIST="
1237     dxva2
1238     vaapi
1239     vda
1240     vdpau
1241 "
1242
1243 LIBRARY_LIST="
1244     avcodec
1245     avdevice
1246     avfilter
1247     avformat
1248     avresample
1249     avutil
1250     postproc
1251     swresample
1252     swscale
1253 "
1254
1255 PROGRAM_LIST="
1256     ffplay
1257     ffprobe
1258     ffserver
1259     ffmpeg
1260 "
1261
1262 CONFIG_LIST="
1263     $COMPONENT_LIST
1264     $DOCUMENT_LIST
1265     $EXTERNAL_LIBRARY_LIST
1266     $HWACCEL_LIST
1267     $LIBRARY_LIST
1268     $PROGRAM_LIST
1269     dct
1270     dwt
1271     error_resilience
1272     fast_unaligned
1273     fft
1274     ftrapv
1275     gpl
1276     gray
1277     hardcoded_tables
1278     incompatible_libav_abi
1279     incompatible_fork_abi
1280     lsp
1281     lzo
1282     mdct
1283     memalign_hack
1284     memory_poisoning
1285     network
1286     nonfree
1287     pic
1288     rdft
1289     runtime_cpudetect
1290     safe_bitstream_reader
1291     shared
1292     small
1293     sram
1294     static
1295     swscale_alpha
1296     thumb
1297     version3
1298     xmm_clobber_test
1299 "
1300
1301 THREADS_LIST='
1302     pthreads
1303     w32threads
1304     os2threads
1305 '
1306
1307 ATOMICS_LIST='
1308     atomics_gcc
1309     atomics_suncc
1310     atomics_win32
1311 '
1312
1313 ARCH_LIST='
1314     aarch64
1315     alpha
1316     arm
1317     avr32
1318     avr32_ap
1319     avr32_uc
1320     bfin
1321     ia64
1322     m68k
1323     mips
1324     mips64
1325     parisc
1326     ppc
1327     ppc64
1328     s390
1329     sh4
1330     sparc
1331     sparc64
1332     tilegx
1333     tilepro
1334     tomi
1335     x86
1336     x86_32
1337     x86_64
1338 '
1339
1340 ARCH_EXT_LIST_ARM='
1341     armv5te
1342     armv6
1343     armv6t2
1344     neon
1345     vfp
1346     vfpv3
1347 '
1348
1349 ARCH_EXT_LIST_X86='
1350     amd3dnow
1351     amd3dnowext
1352     avx
1353     avx2
1354     fma4
1355     i686
1356     mmx
1357     mmxext
1358     sse
1359     sse2
1360     sse3
1361     sse4
1362     sse42
1363     ssse3
1364 '
1365
1366 ARCH_EXT_LIST="
1367     $ARCH_EXT_LIST_ARM
1368     $ARCH_EXT_LIST_X86
1369     altivec
1370     ppc4xx
1371     vis
1372     mipsfpu
1373     mips32r2
1374     mipsdspr1
1375     mipsdspr2
1376 "
1377
1378 HAVE_LIST_CMDLINE='
1379     inline_asm
1380     symver
1381     yasm
1382 '
1383
1384 HAVE_LIST_PUB='
1385     bigendian
1386     fast_unaligned
1387     incompatible_libav_abi
1388     incompatible_fork_abi
1389 '
1390
1391 MATH_FUNCS="
1392     atanf
1393     atan2f
1394     cbrt
1395     cbrtf
1396     cosf
1397     exp2
1398     exp2f
1399     expf
1400     isinf
1401     isnan
1402     ldexpf
1403     llrint
1404     llrintf
1405     log2
1406     log2f
1407     log10f
1408     lrint
1409     lrintf
1410     powf
1411     rint
1412     round
1413     roundf
1414     sinf
1415     trunc
1416     truncf
1417 "
1418
1419 HAVE_LIST="
1420     $ARCH_EXT_LIST
1421     $(add_suffix _external $ARCH_EXT_LIST)
1422     $(add_suffix _inline   $ARCH_EXT_LIST)
1423     $HAVE_LIST_CMDLINE
1424     $HAVE_LIST_PUB
1425     $THREADS_LIST
1426     $ATOMICS_LIST
1427     $MATH_FUNCS
1428     access
1429     aligned_malloc
1430     aligned_stack
1431     alsa_asoundlib_h
1432     altivec_h
1433     arpa_inet_h
1434     asm_mod_q
1435     asm_mod_y
1436     asm_types_h
1437     atomic_cas_ptr
1438     atomics_native
1439     attribute_may_alias
1440     attribute_packed
1441     cdio_paranoia_h
1442     cdio_paranoia_paranoia_h
1443     CL_cl_h
1444     clock_gettime
1445     closesocket
1446     CommandLineToArgvW
1447     cpunop
1448     CryptGenRandom
1449     dcbzl
1450     dev_bktr_ioctl_bt848_h
1451     dev_bktr_ioctl_meteor_h
1452     dev_ic_bt8xx_h
1453     dev_video_bktr_ioctl_bt848_h
1454     dev_video_meteor_ioctl_meteor_h
1455     direct_h
1456     dlfcn_h
1457     dlopen
1458     dos_paths
1459     dxva_h
1460     ebp_available
1461     ebx_available
1462     fast_64bit
1463     fast_clz
1464     fast_cmov
1465     fcntl
1466     fork
1467     getaddrinfo
1468     gethrtime
1469     getopt
1470     GetProcessAffinityMask
1471     GetProcessMemoryInfo
1472     GetProcessTimes
1473     GetSystemTimeAsFileTime
1474     getrusage
1475     getservbyport
1476     gettimeofday
1477     glob
1478     gnu_as
1479     gsm_h
1480     ibm_asm
1481     inet_aton
1482     io_h
1483     inline_asm_labels
1484     isatty
1485     jack_port_get_latency_range
1486     kbhit
1487     ldbrx
1488     libdc1394_1
1489     libdc1394_2
1490     local_aligned_16
1491     local_aligned_8
1492     localtime_r
1493     loongson
1494     lzo1x_999_compress
1495     machine_ioctl_bt848_h
1496     machine_ioctl_meteor_h
1497     machine_rw_barrier
1498     makeinfo
1499     malloc_h
1500     MapViewOfFile
1501     memalign
1502     MemoryBarrier
1503     mkstemp
1504     mm_empty
1505     mmap
1506     mprotect
1507     msvcrt
1508     nanosleep
1509     openjpeg_1_5_openjpeg_h
1510     PeekNamedPipe
1511     perl
1512     pod2man
1513     poll_h
1514     posix_memalign
1515     pragma_deprecated
1516     pthread_cancel
1517     rdtsc
1518     rsync_contimeout
1519     sarestart
1520     sched_getaffinity
1521     sdl
1522     SetConsoleTextAttribute
1523     setmode
1524     setrlimit
1525     Sleep
1526     sndio_h
1527     socklen_t
1528     soundcard_h
1529     strerror_r
1530     struct_addrinfo
1531     struct_group_source_req
1532     struct_ip_mreq_source
1533     struct_ipv6_mreq
1534     struct_pollfd
1535     struct_rusage_ru_maxrss
1536     struct_sctp_event_subscribe
1537     struct_sockaddr_in6
1538     struct_sockaddr_sa_len
1539     struct_sockaddr_storage
1540     struct_stat_st_mtim_tv_nsec
1541     struct_v4l2_frmivalenum_discrete
1542     symver_asm_label
1543     symver_gnu_asm
1544     sync_val_compare_and_swap
1545     sysconf
1546     sysctl
1547     sys_mman_h
1548     sys_param_h
1549     sys_resource_h
1550     sys_select_h
1551     sys_soundcard_h
1552     sys_time_h
1553     sys_un_h
1554     sys_videoio_h
1555     termios_h
1556     texi2html
1557     threads
1558     unistd_h
1559     usleep
1560     vfp_args
1561     VirtualAlloc
1562     windows_h
1563     winsock2_h
1564     xform_asm
1565     xmm_clobbers
1566 "
1567
1568 # options emitted with CONFIG_ prefix but not available on the command line
1569 CONFIG_EXTRA="
1570     aandcttables
1571     ac3dsp
1572     audio_frame_queue
1573     dsputil
1574     exif
1575     frame_thread_encoder
1576     gcrypt
1577     golomb
1578     gplv3
1579     h263dsp
1580     h264chroma
1581     h264dsp
1582     h264pred
1583     h264qpel
1584     hpeldsp
1585     huffman
1586     lgplv3
1587     lpc
1588     mpegaudio
1589     mpegaudiodsp
1590     mpegvideo
1591     mpegvideoenc
1592     nettle
1593     rangecoder
1594     riffdec
1595     riffenc
1596     rtpdec
1597     rtpenc_chain
1598     sinewin
1599     videodsp
1600     vp3dsp
1601 "
1602
1603 CMDLINE_SELECT="
1604     $ARCH_EXT_LIST
1605     $CONFIG_LIST
1606     $HAVE_LIST_CMDLINE
1607     $THREADS_LIST
1608     asm
1609     cross_compile
1610     debug
1611     extra_warnings
1612     logging
1613     lto
1614     optimizations
1615     stripping
1616 "
1617
1618 PATHS_LIST='
1619     bindir
1620     datadir
1621     docdir
1622     incdir
1623     libdir
1624     mandir
1625     prefix
1626     shlibdir
1627 '
1628
1629 CMDLINE_SET="
1630     $PATHS_LIST
1631     ar
1632     arch
1633     as
1634     assert_level
1635     build_suffix
1636     cc
1637     cpu
1638     cross_prefix
1639     cxx
1640     dep_cc
1641     extra_version
1642     host_cc
1643     host_cflags
1644     host_ld
1645     host_ldflags
1646     host_libs
1647     host_os
1648     install
1649     ld
1650     logfile
1651     malloc_prefix
1652     nm
1653     optflags
1654     pkg_config
1655     progs_suffix
1656     random_seed
1657     samples
1658     strip
1659     sysinclude
1660     sysroot
1661     target_exec
1662     target_os
1663     target_path
1664     target_samples
1665     tempprefix
1666     toolchain
1667     valgrind
1668     yasmexe
1669 "
1670
1671 CMDLINE_APPEND="
1672     extra_cflags
1673     extra_cxxflags
1674     host_cppflags
1675 "
1676
1677 # code dependency declarations
1678
1679 # architecture extensions
1680
1681 armv5te_deps="arm"
1682 armv6_deps="arm"
1683 armv6t2_deps="arm"
1684 neon_deps="arm"
1685 vfp_deps="arm"
1686 vfpv3_deps="vfp"
1687
1688 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1689
1690 mipsfpu_deps="mips"
1691 mips32r2_deps="mips"
1692 mipsdspr1_deps="mips"
1693 mipsdspr2_deps="mips"
1694
1695 altivec_deps="ppc"
1696 ppc4xx_deps="ppc"
1697
1698 vis_deps="sparc"
1699
1700 cpunop_deps="i686"
1701 x86_64_select="i686"
1702 x86_64_suggest="fast_cmov"
1703
1704 amd3dnow_deps="mmx"
1705 amd3dnowext_deps="amd3dnow"
1706 mmx_deps="x86"
1707 mmxext_deps="mmx"
1708 sse_deps="mmxext"
1709 sse2_deps="sse"
1710 sse3_deps="sse2"
1711 ssse3_deps="sse3"
1712 sse4_deps="ssse3"
1713 sse42_deps="sse4"
1714 avx_deps="sse42"
1715 fma4_deps="avx"
1716 avx2_deps="avx"
1717
1718 mmx_external_deps="yasm"
1719 mmx_inline_deps="inline_asm"
1720 mmx_suggest="mmx_external mmx_inline"
1721
1722 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1723     eval dep=\$${ext}_deps
1724     eval ${ext}_external_deps='"${dep}_external"'
1725     eval ${ext}_inline_deps='"${dep}_inline"'
1726     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1727 done
1728
1729 aligned_stack_if_any="ppc x86"
1730 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1731 fast_clz_if_any="alpha avr32 mips ppc x86"
1732 fast_unaligned_if_any="ppc x86"
1733
1734 inline_asm_deps="!tms470"
1735 need_memalign="altivec neon sse"
1736
1737 symver_if_any="symver_asm_label symver_gnu_asm"
1738
1739 log2_deps="!msvcrt"
1740
1741 # subsystems
1742 dct_select="rdft"
1743 error_resilience_select="dsputil"
1744 frame_thread_encoder_deps="encoders threads"
1745 lpc_select="dsputil"
1746 mdct_select="fft"
1747 rdft_select="fft"
1748 mpegaudio_select="mpegaudiodsp"
1749 mpegaudiodsp_select="dct"
1750 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1751 mpegvideoenc_select="mpegvideo"
1752
1753 # decoders / encoders
1754 aac_decoder_select="mdct sinewin"
1755 aac_encoder_select="audio_frame_queue mdct sinewin"
1756 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1757 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1758 ac3_encoder_select="mdct ac3dsp dsputil"
1759 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1760 aic_decoder_select="dsputil golomb"
1761 alac_encoder_select="lpc"
1762 als_decoder_select="dsputil"
1763 amrnb_decoder_select="lsp"
1764 amrwb_decoder_select="lsp"
1765 amv_decoder_select="dsputil hpeldsp exif"
1766 amv_encoder_select="aandcttables"
1767 ape_decoder_select="dsputil"
1768 asv1_decoder_select="dsputil"
1769 asv1_encoder_select="dsputil"
1770 asv2_decoder_select="dsputil"
1771 asv2_encoder_select="dsputil"
1772 atrac1_decoder_select="mdct sinewin"
1773 atrac3_decoder_select="mdct"
1774 avrn_decoder_select="exif"
1775 bink_decoder_select="dsputil hpeldsp"
1776 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1777 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1778 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1779 cllc_decoder_select="dsputil"
1780 comfortnoise_encoder_select="lpc"
1781 cook_decoder_select="dsputil mdct sinewin"
1782 cscd_decoder_select="lzo"
1783 cscd_decoder_suggest="zlib"
1784 dca_decoder_select="mdct"
1785 dirac_decoder_select="dsputil dwt golomb videodsp"
1786 dnxhd_decoder_select="dsputil"
1787 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1788 dvvideo_decoder_select="dsputil"
1789 dvvideo_encoder_select="dsputil"
1790 dxa_decoder_select="zlib"
1791 eac3_decoder_select="ac3_decoder"
1792 eac3_encoder_select="ac3_encoder"
1793 eamad_decoder_select="aandcttables dsputil mpegvideo"
1794 eatgq_decoder_select="aandcttables"
1795 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1796 exr_decoder_select="zlib"
1797 ffv1_decoder_select="dsputil golomb rangecoder"
1798 ffv1_encoder_select="dsputil rangecoder"
1799 ffvhuff_decoder_select="dsputil"
1800 ffvhuff_encoder_select="dsputil huffman"
1801 flac_decoder_select="golomb"
1802 flac_encoder_select="dsputil golomb lpc"
1803 flashsv_decoder_select="zlib"
1804 flashsv_encoder_select="zlib"
1805 flashsv2_encoder_select="zlib"
1806 flashsv2_decoder_select="zlib"
1807 flv_decoder_select="h263_decoder"
1808 flv_encoder_select="h263_encoder"
1809 fourxm_decoder_select="dsputil"
1810 fraps_decoder_select="dsputil huffman"
1811 g2m_decoder_select="dsputil zlib"
1812 g729_decoder_select="dsputil"
1813 h261_decoder_select="error_resilience mpegvideo"
1814 h261_encoder_select="aandcttables mpegvideoenc"
1815 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1816 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1817 h263i_decoder_select="h263_decoder"
1818 h263p_encoder_select="h263_encoder"
1819 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1820 h264_decoder_suggest="error_resilience"
1821 hevc_decoder_select="dsputil golomb videodsp"
1822 huffyuv_decoder_select="dsputil"
1823 huffyuv_encoder_select="dsputil huffman"
1824 iac_decoder_select="dsputil fft mdct sinewin"
1825 imc_decoder_select="dsputil fft mdct sinewin"
1826 indeo3_decoder_select="hpeldsp"
1827 interplay_video_decoder_select="hpeldsp"
1828 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1829 jpegls_encoder_select="golomb"
1830 jv_decoder_select="dsputil"
1831 lagarith_decoder_select="dsputil"
1832 ljpeg_encoder_select="aandcttables mpegvideoenc"
1833 loco_decoder_select="golomb"
1834 mdec_decoder_select="dsputil error_resilience mpegvideo"
1835 metasound_decoder_select="lsp mdct sinewin"
1836 mimic_decoder_select="dsputil hpeldsp"
1837 mjpeg_decoder_select="dsputil hpeldsp exif"
1838 mjpegb_decoder_select="dsputil hpeldsp exif"
1839 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1840 mlp_decoder_select="dsputil mlp_parser"
1841 motionpixels_decoder_select="dsputil"
1842 mp1_decoder_select="mpegaudio"
1843 mp1float_decoder_select="mpegaudio"
1844 mp2_decoder_select="mpegaudio"
1845 mp2float_decoder_select="mpegaudio"
1846 mp3_decoder_select="mpegaudio"
1847 mp3adu_decoder_select="mpegaudio"
1848 mp3adufloat_decoder_select="mpegaudio"
1849 mp3float_decoder_select="mpegaudio"
1850 mp3on4_decoder_select="mpegaudio"
1851 mp3on4float_decoder_select="mpegaudio"
1852 mpc7_decoder_select="dsputil mpegaudiodsp"
1853 mpc8_decoder_select="dsputil mpegaudiodsp"
1854 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1855 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1856 mpeg1video_decoder_select="error_resilience mpegvideo"
1857 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1858 mpeg2video_decoder_select="error_resilience mpegvideo"
1859 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1860 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1861 mpeg4_encoder_select="h263_encoder"
1862 msmpeg4v1_decoder_select="h263_decoder"
1863 msmpeg4v2_decoder_select="h263_decoder"
1864 msmpeg4v2_encoder_select="h263_encoder"
1865 msmpeg4v3_decoder_select="h263_decoder"
1866 msmpeg4v3_encoder_select="h263_encoder"
1867 mss2_decoder_select="error_resilience vc1_decoder"
1868 mxpeg_decoder_select="dsputil hpeldsp exif"
1869 nellymoser_decoder_select="mdct sinewin"
1870 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1871 nuv_decoder_select="dsputil lzo"
1872 png_decoder_select="zlib"
1873 png_encoder_select="dsputil zlib"
1874 prores_decoder_select="dsputil"
1875 prores_encoder_select="dsputil"
1876 qcelp_decoder_select="lsp"
1877 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1878 ra_144_encoder_select="audio_frame_queue lpc"
1879 ralf_decoder_select="golomb"
1880 rtjpeg_decoder_select="dsputil"
1881 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1882 rv10_encoder_select="h263_encoder"
1883 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1884 rv20_encoder_select="h263_encoder"
1885 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1886 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1887 shorten_decoder_select="golomb"
1888 sipr_decoder_select="lsp"
1889 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1890 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1891 sonic_decoder_select="golomb"
1892 sonic_encoder_select="golomb"
1893 sonic_ls_encoder_select="golomb"
1894 sp5x_decoder_select="dsputil hpeldsp exif"
1895 svq1_decoder_select="hpeldsp"
1896 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1897 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1898 svq3_decoder_suggest="error_resilience zlib"
1899 tak_decoder_select="dsputil"
1900 theora_decoder_select="vp3_decoder"
1901 tiff_decoder_suggest="zlib"
1902 tiff_encoder_suggest="zlib"
1903 thp_decoder_select="dsputil hpeldsp exif"
1904 truehd_decoder_select="mlp_parser"
1905 truemotion2_decoder_select="dsputil"
1906 truespeech_decoder_select="dsputil"
1907 tscc_decoder_select="zlib"
1908 twinvq_decoder_select="mdct lsp sinewin"
1909 utvideo_decoder_select="dsputil"
1910 utvideo_encoder_select="dsputil huffman"
1911 vble_decoder_select="dsputil"
1912 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1913 vc1image_decoder_select="vc1_decoder"
1914 vorbis_decoder_select="mdct"
1915 vorbis_encoder_select="mdct"
1916 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1917 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1918 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1919 vp6a_decoder_select="vp6_decoder"
1920 vp6f_decoder_select="vp6_decoder"
1921 vp8_decoder_select="h264pred videodsp"
1922 vp9_decoder_select="videodsp"
1923 webp_decoder_select="vp8_decoder"
1924 wmapro_decoder_select="mdct sinewin"
1925 wmav1_decoder_select="mdct sinewin"
1926 wmav1_encoder_select="mdct sinewin"
1927 wmav2_decoder_select="mdct sinewin"
1928 wmav2_encoder_select="mdct sinewin"
1929 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1930 wmv1_decoder_select="h263_decoder"
1931 wmv1_encoder_select="h263_encoder"
1932 wmv2_decoder_select="h263_decoder videodsp"
1933 wmv2_encoder_select="h263_encoder"
1934 wmv3_decoder_select="vc1_decoder"
1935 wmv3image_decoder_select="wmv3_decoder"
1936 zerocodec_decoder_select="zlib"
1937 zlib_decoder_select="zlib"
1938 zlib_encoder_select="zlib"
1939 zmbv_decoder_select="zlib"
1940 zmbv_encoder_select="zlib"
1941
1942 # hardware accelerators
1943 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1944 dxva2_deps="dxva2api_h"
1945 vaapi_deps="va_va_h"
1946 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1947 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1948 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1949
1950 h263_vaapi_hwaccel_deps="vaapi"
1951 h263_vaapi_hwaccel_select="h263_decoder"
1952 h263_vdpau_hwaccel_deps="vdpau"
1953 h263_vdpau_hwaccel_select="h263_decoder"
1954 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1955 h264_dxva2_hwaccel_deps="dxva2"
1956 h264_dxva2_hwaccel_select="h264_decoder"
1957 h264_vaapi_hwaccel_deps="vaapi"
1958 h264_vaapi_hwaccel_select="h264_decoder"
1959 h264_vda_decoder_deps="vda"
1960 h264_vda_decoder_select="h264_decoder"
1961 h264_vda_hwaccel_deps="vda"
1962 h264_vda_hwaccel_select="h264_decoder"
1963 h264_vdpau_decoder_deps="vdpau"
1964 h264_vdpau_decoder_select="h264_decoder"
1965 h264_vdpau_hwaccel_deps="vdpau"
1966 h264_vdpau_hwaccel_select="h264_decoder"
1967 mpeg_vdpau_decoder_deps="vdpau"
1968 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1969 mpeg1_vdpau_decoder_deps="vdpau"
1970 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1971 mpeg1_vdpau_hwaccel_deps="vdpau"
1972 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1973 mpeg2_crystalhd_decoder_select="crystalhd"
1974 mpeg2_dxva2_hwaccel_deps="dxva2"
1975 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1976 mpeg2_vaapi_hwaccel_deps="vaapi"
1977 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1978 mpeg2_vdpau_hwaccel_deps="vdpau"
1979 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1980 mpeg4_crystalhd_decoder_select="crystalhd"
1981 mpeg4_vaapi_hwaccel_deps="vaapi"
1982 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1983 mpeg4_vdpau_decoder_deps="vdpau"
1984 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1985 mpeg4_vdpau_hwaccel_deps="vdpau"
1986 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1987 msmpeg4_crystalhd_decoder_select="crystalhd"
1988 vc1_crystalhd_decoder_select="crystalhd"
1989 vc1_dxva2_hwaccel_deps="dxva2"
1990 vc1_dxva2_hwaccel_select="vc1_decoder"
1991 vc1_vaapi_hwaccel_deps="vaapi"
1992 vc1_vaapi_hwaccel_select="vc1_decoder"
1993 vc1_vdpau_decoder_deps="vdpau"
1994 vc1_vdpau_decoder_select="vc1_decoder"
1995 vc1_vdpau_hwaccel_deps="vdpau"
1996 vc1_vdpau_hwaccel_select="vc1_decoder"
1997 wmv3_crystalhd_decoder_select="crystalhd"
1998 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1999 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2000 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2001 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2002
2003 # parsers
2004 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2005 hevc_parser_select="hevc_decoder"
2006 mpeg4video_parser_select="error_resilience mpegvideo"
2007 mpegvideo_parser_select="error_resilience mpegvideo"
2008 vc1_parser_select="mpegvideo"
2009
2010 # external libraries
2011 libaacplus_encoder_deps="libaacplus"
2012 libcelt_decoder_deps="libcelt"
2013 libfaac_encoder_deps="libfaac"
2014 libfaac_encoder_select="audio_frame_queue"
2015 libfdk_aac_decoder_deps="libfdk_aac"
2016 libfdk_aac_encoder_deps="libfdk_aac"
2017 libfdk_aac_encoder_select="audio_frame_queue"
2018 libgme_demuxer_deps="libgme"
2019 libgsm_decoder_deps="libgsm"
2020 libgsm_encoder_deps="libgsm"
2021 libgsm_ms_decoder_deps="libgsm"
2022 libgsm_ms_encoder_deps="libgsm"
2023 libilbc_decoder_deps="libilbc"
2024 libilbc_encoder_deps="libilbc"
2025 libmodplug_demuxer_deps="libmodplug"
2026 libmp3lame_encoder_deps="libmp3lame"
2027 libmp3lame_encoder_select="audio_frame_queue"
2028 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2029 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2030 libopencore_amrnb_encoder_select="audio_frame_queue"
2031 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2032 libopenjpeg_decoder_deps="libopenjpeg"
2033 libopenjpeg_encoder_deps="libopenjpeg"
2034 libopus_decoder_deps="libopus"
2035 libopus_encoder_deps="libopus"
2036 libopus_encoder_select="audio_frame_queue"
2037 libquvi_demuxer_deps="libquvi"
2038 libschroedinger_decoder_deps="libschroedinger"
2039 libschroedinger_encoder_deps="libschroedinger"
2040 libshine_encoder_deps="libshine"
2041 libshine_encoder_select="audio_frame_queue"
2042 libspeex_decoder_deps="libspeex"
2043 libspeex_encoder_deps="libspeex"
2044 libspeex_encoder_select="audio_frame_queue"
2045 libstagefright_h264_decoder_deps="libstagefright_h264"
2046 libtheora_encoder_deps="libtheora"
2047 libtwolame_encoder_deps="libtwolame"
2048 libvo_aacenc_encoder_deps="libvo_aacenc"
2049 libvo_aacenc_encoder_select="audio_frame_queue"
2050 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2051 libvorbis_decoder_deps="libvorbis"
2052 libvorbis_encoder_deps="libvorbis"
2053 libvorbis_encoder_select="audio_frame_queue"
2054 libvpx_vp8_decoder_deps="libvpx"
2055 libvpx_vp8_encoder_deps="libvpx"
2056 libvpx_vp9_decoder_deps="libvpx"
2057 libvpx_vp9_encoder_deps="libvpx"
2058 libwavpack_encoder_deps="libwavpack"
2059 libx264_encoder_deps="libx264"
2060 libx264rgb_encoder_deps="libx264"
2061 libxavs_encoder_deps="libxavs"
2062 libxvid_encoder_deps="libxvid"
2063 libutvideo_decoder_deps="libutvideo"
2064 libutvideo_encoder_deps="libutvideo"
2065 libzvbi_teletext_decoder_deps="libzvbi"
2066
2067 # demuxers / muxers
2068 ac3_demuxer_select="ac3_parser"
2069 asf_demuxer_select="riffdec"
2070 asf_muxer_select="riffenc"
2071 asf_stream_muxer_select="asf_muxer"
2072 avi_demuxer_select="riffdec"
2073 avi_muxer_select="riffenc"
2074 avisynth_demuxer_deps="avisynth"
2075 avisynth_demuxer_select="riffdec"
2076 caf_demuxer_select="riffdec"
2077 dirac_demuxer_select="dirac_parser"
2078 dts_demuxer_select="dca_parser"
2079 dtshd_demuxer_select="dca_parser"
2080 dxa_demuxer_select="riffdec"
2081 eac3_demuxer_select="ac3_parser"
2082 f4v_muxer_select="mov_muxer"
2083 flac_demuxer_select="flac_parser"
2084 hds_muxer_select="flv_muxer"
2085 hls_muxer_select="mpegts_muxer"
2086 ipod_muxer_select="mov_muxer"
2087 ismv_muxer_select="mov_muxer"
2088 libnut_demuxer_deps="libnut"
2089 libnut_muxer_deps="libnut"
2090 matroska_audio_muxer_select="matroska_muxer"
2091 matroska_demuxer_select="riffdec"
2092 matroska_demuxer_suggest="bzlib lzo zlib"
2093 matroska_muxer_select="riffenc"
2094 mmf_muxer_select="riffenc"
2095 mov_demuxer_select="riffdec"
2096 mov_demuxer_suggest="zlib"
2097 mov_muxer_select="riffenc rtpenc_chain"
2098 mp3_demuxer_select="mpegaudio_parser"
2099 mp4_muxer_select="mov_muxer"
2100 mpegts_muxer_select="adts_muxer latm_muxer"
2101 mpegtsraw_demuxer_select="mpegts_demuxer"
2102 mxf_d10_muxer_select="mxf_muxer"
2103 nut_muxer_select="riffenc"
2104 nuv_demuxer_select="riffdec"
2105 ogg_demuxer_select="golomb"
2106 psp_muxer_select="mov_muxer"
2107 rtp_demuxer_select="sdp_demuxer"
2108 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2109 rtsp_demuxer_select="http_protocol rtpdec"
2110 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2111 sap_demuxer_select="sdp_demuxer"
2112 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2113 sdp_demuxer_select="rtpdec"
2114 smoothstreaming_muxer_select="ismv_muxer"
2115 spdif_muxer_select="aac_parser"
2116 tak_demuxer_select="tak_parser"
2117 tg2_muxer_select="mov_muxer"
2118 tgp_muxer_select="mov_muxer"
2119 vobsub_demuxer_select="mpegps_demuxer"
2120 w64_demuxer_select="wav_demuxer"
2121 w64_muxer_select="wav_muxer"
2122 wav_demuxer_select="riffdec"
2123 wav_muxer_select="riffenc"
2124 webm_muxer_select="riffenc"
2125 wtv_demuxer_select="riffdec"
2126 xmv_demuxer_select="riffdec"
2127 xwma_demuxer_select="riffdec"
2128
2129 # indevs / outdevs
2130 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2131 alsa_outdev_deps="alsa_asoundlib_h"
2132 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2133 caca_outdev_deps="libcaca"
2134 dshow_indev_deps="IBaseFilter"
2135 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2136 dv1394_indev_deps="dv1394"
2137 dv1394_indev_select="dv_demuxer"
2138 fbdev_indev_deps="linux_fb_h"
2139 fbdev_outdev_deps="linux_fb_h"
2140 iec61883_indev_deps="libiec61883"
2141 jack_indev_deps="jack_jack_h sem_timedwait"
2142 lavfi_indev_deps="avfilter"
2143 libcdio_indev_deps="libcdio"
2144 libdc1394_indev_deps="libdc1394"
2145 libv4l2_indev_deps="libv4l2"
2146 openal_indev_deps="openal"
2147 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2148 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2149 pulse_indev_deps="libpulse"
2150 pulse_outdev_deps="libpulse"
2151 sdl_outdev_deps="sdl"
2152 sndio_indev_deps="sndio_h"
2153 sndio_outdev_deps="sndio_h"
2154 v4l_indev_deps="linux_videodev_h"
2155 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2156 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2157 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2158 vfwcap_indev_extralibs="-lavicap32"
2159 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2160 xv_outdev_extralibs="-lXv -lX11 -lXext"
2161 x11grab_indev_deps="x11grab"
2162
2163 # protocols
2164 bluray_protocol_deps="libbluray"
2165 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2166 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2167 ffrtmpcrypt_protocol_select="tcp_protocol"
2168 ffrtmphttp_protocol_deps="!librtmp_protocol"
2169 ffrtmphttp_protocol_select="http_protocol"
2170 ftp_protocol_select="tcp_protocol"
2171 gopher_protocol_select="network"
2172 httpproxy_protocol_select="tcp_protocol"
2173 http_protocol_select="tcp_protocol"
2174 https_protocol_select="tls_protocol"
2175 librtmp_protocol_deps="librtmp"
2176 librtmpe_protocol_deps="librtmp"
2177 librtmps_protocol_deps="librtmp"
2178 librtmpt_protocol_deps="librtmp"
2179 librtmpte_protocol_deps="librtmp"
2180 libssh_protocol_deps="libssh"
2181 mmsh_protocol_select="http_protocol"
2182 mmst_protocol_select="network"
2183 rtmp_protocol_deps="!librtmp_protocol"
2184 rtmp_protocol_select="tcp_protocol"
2185 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2186 rtmps_protocol_deps="!librtmp_protocol"
2187 rtmps_protocol_select="tls_protocol"
2188 rtmpt_protocol_select="ffrtmphttp_protocol"
2189 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2190 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2191 rtp_protocol_select="udp_protocol"
2192 sctp_protocol_deps="struct_sctp_event_subscribe"
2193 sctp_protocol_select="network"
2194 srtp_protocol_select="rtp_protocol"
2195 tcp_protocol_select="network"
2196 tls_protocol_deps_any="openssl gnutls"
2197 tls_protocol_select="tcp_protocol"
2198 udp_protocol_select="network"
2199 unix_protocol_deps="sys_un_h"
2200 unix_protocol_select="network"
2201
2202 # filters
2203 aconvert_filter_deps="swresample"
2204 amovie_filter_deps="avcodec avformat"
2205 aresample_filter_deps="swresample"
2206 ass_filter_deps="libass"
2207 asyncts_filter_deps="avresample"
2208 atempo_filter_deps="avcodec"
2209 atempo_filter_select="rdft"
2210 azmq_filter_deps="libzmq"
2211 blackframe_filter_deps="gpl"
2212 boxblur_filter_deps="gpl"
2213 colormatrix_filter_deps="gpl"
2214 cropdetect_filter_deps="gpl"
2215 dctdnoiz_filter_deps="avcodec"
2216 dctdnoiz_filter_select="fft"
2217 delogo_filter_deps="gpl"
2218 deshake_filter_deps="avcodec"
2219 deshake_filter_select="dsputil"
2220 drawtext_filter_deps="libfreetype"
2221 ebur128_filter_deps="gpl"
2222 flite_filter_deps="libflite"
2223 frei0r_filter_deps="frei0r dlopen"
2224 frei0r_filter_extralibs='$ldl'
2225 frei0r_src_filter_deps="frei0r dlopen"
2226 frei0r_src_filter_extralibs='$ldl'
2227 geq_filter_deps="gpl"
2228 histeq_filter_deps="gpl"
2229 hqdn3d_filter_deps="gpl"
2230 interlace_filter_deps="gpl"
2231 kerndeint_filter_deps="gpl"
2232 ladspa_filter_deps="ladspa dlopen"
2233 mcdeint_filter_deps="avcodec gpl"
2234 movie_filter_deps="avcodec avformat"
2235 mp_filter_deps="gpl avcodec swscale inline_asm"
2236 mpdecimate_filter_deps="gpl avcodec"
2237 mptestsrc_filter_deps="gpl"
2238 negate_filter_deps="lut_filter"
2239 perspective_filter_deps="gpl"
2240 resample_filter_deps="avresample"
2241 ocv_filter_deps="libopencv"
2242 owdenoise_filter_deps="gpl"
2243 pan_filter_deps="swresample"
2244 phase_filter_deps="gpl"
2245 pp_filter_deps="gpl postproc"
2246 pullup_filter_deps="gpl"
2247 removelogo_filter_deps="avcodec avformat swscale"
2248 sab_filter_deps="gpl swscale"
2249 scale_filter_deps="swscale"
2250 smartblur_filter_deps="gpl swscale"
2251 showspectrum_filter_deps="avcodec"
2252 showspectrum_filter_select="rdft"
2253 spp_filter_deps="gpl avcodec"
2254 spp_filter_select="fft"
2255 stereo3d_filter_deps="gpl"
2256 subtitles_filter_deps="avformat avcodec libass"
2257 super2xsai_filter_deps="gpl"
2258 tinterlace_filter_deps="gpl"
2259 vidstabdetect_filter_deps="libvidstab"
2260 vidstabtransform_filter_deps="libvidstab"
2261 yadif_filter_deps="gpl"
2262 pixfmts_super2xsai_test_deps="super2xsai_filter"
2263 tinterlace_merge_test_deps="tinterlace_filter"
2264 tinterlace_pad_test_deps="tinterlace_filter"
2265 zmq_filter_deps="libzmq"
2266
2267 # libraries
2268 avcodec_deps="avutil"
2269 avdevice_deps="avutil avcodec avformat"
2270 avfilter_deps="avutil"
2271 avformat_deps="avutil avcodec"
2272 avresample_deps="avutil"
2273 postproc_deps="avutil gpl"
2274 swscale_deps="avutil"
2275
2276 # programs
2277 ffmpeg_deps="avcodec avfilter avformat swresample"
2278 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2279                null_filter
2280                setpts_filter trim_filter"
2281 ffplay_deps="avcodec avformat swscale swresample sdl"
2282 ffplay_select="rdft crop_filter"
2283 ffprobe_deps="avcodec avformat"
2284 ffserver_deps="avformat fork sarestart"
2285 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2286 ffserver_extralibs='$ldl'
2287
2288 # documentation
2289 podpages_deps="perl"
2290 manpages_deps="perl pod2man"
2291 htmlpages_deps="texi2html"
2292 txtpages_deps="makeinfo"
2293 doc_deps_any="manpages htmlpages podpages txtpages"
2294
2295 # default parameters
2296
2297 logfile="config.log"
2298
2299 # installation paths
2300 prefix_default="/usr/local"
2301 bindir_default='${prefix}/bin'
2302 datadir_default='${prefix}/share/ffmpeg'
2303 docdir_default='${prefix}/share/doc/ffmpeg'
2304 incdir_default='${prefix}/include'
2305 libdir_default='${prefix}/lib'
2306 mandir_default='${prefix}/share/man'
2307 shlibdir_default="$libdir_default"
2308
2309 # toolchain
2310 ar_default="ar"
2311 cc_default="gcc"
2312 cxx_default="g++"
2313 host_cc_default="gcc"
2314 cp_f="cp -f"
2315 install="install"
2316 ln_s="ln -s -f"
2317 nm_default="nm -g"
2318 objformat="elf"
2319 pkg_config_default=pkg-config
2320 ranlib="ranlib"
2321 strip_default="strip"
2322 yasmexe_default="yasm"
2323
2324 nogas=":"
2325
2326 # machine
2327 arch_default=$(uname -m)
2328 cpu="generic"
2329
2330 # OS
2331 target_os_default=$(tolower $(uname -s))
2332 host_os=$target_os_default
2333
2334 # configurable options
2335 enable $PROGRAM_LIST
2336 enable $DOCUMENT_LIST
2337 enable $(filter_out avresample $LIBRARY_LIST)
2338 enable stripping
2339
2340 enable asm
2341 enable debug
2342 enable doc
2343 enable optimizations
2344 enable runtime_cpudetect
2345 enable safe_bitstream_reader
2346 enable static
2347 enable swscale_alpha
2348
2349 # Enable hwaccels by default.
2350 enable dxva2 vaapi vdpau
2351
2352 # build settings
2353 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2354 LIBPREF="lib"
2355 LIBSUF=".a"
2356 FULLNAME='$(NAME)$(BUILDSUF)'
2357 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2358 SLIBPREF="lib"
2359 SLIBSUF=".so"
2360 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2361 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2362 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2363 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2364 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2365 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2366
2367 asflags_filter=echo
2368 cflags_filter=echo
2369 ldflags_filter=echo
2370
2371 AS_C='-c'
2372 AS_O='-o $@'
2373 CC_C='-c'
2374 CC_E='-E -o $@'
2375 CC_O='-o $@'
2376 CXX_C='-c'
2377 CXX_O='-o $@'
2378 LD_O='-o $@'
2379 LD_LIB='-l%'
2380 LD_PATH='-L'
2381 HOSTCC_C='-c'
2382 HOSTCC_O='-o $@'
2383 HOSTLD_O='-o $@'
2384
2385 host_cflags='-O3 -g'
2386 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2387 host_libs='-lm'
2388 host_cflags_filter=echo
2389 host_ldflags_filter=echo
2390
2391 target_path='$(CURDIR)'
2392
2393 # since the object filename is not given with the -MM flag, the compiler
2394 # is only able to print the basename, and we must add the path ourselves
2395 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2396 DEPFLAGS='-MM'
2397
2398 # find source path
2399 if test -f configure; then
2400     source_path=.
2401 else
2402     source_path=$(cd $(dirname "$0"); pwd)
2403     echo "$source_path" | grep -q '[[:blank:]]' &&
2404         die "Out of tree builds are impossible with whitespace in source path."
2405     test -e "$source_path/config.h" &&
2406         die "Out of tree builds are impossible with config.h in source dir."
2407 fi
2408
2409 for v in "$@"; do
2410     r=${v#*=}
2411     l=${v%"$r"}
2412     r=$(sh_quote "$r")
2413     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2414 done
2415
2416 find_things(){
2417     thing=$1
2418     pattern=$2
2419     file=$source_path/$3
2420     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2421 }
2422
2423 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2424 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2425 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2426 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2427 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2428 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2429 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2430 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2431 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2432 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2433 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2434
2435 ALL_COMPONENTS="
2436     $BSF_LIST
2437     $DECODER_LIST
2438     $DEMUXER_LIST
2439     $ENCODER_LIST
2440     $FILTER_LIST
2441     $HWACCEL_LIST
2442     $INDEV_LIST
2443     $MUXER_LIST
2444     $OUTDEV_LIST
2445     $PARSER_LIST
2446     $PROTOCOL_LIST
2447 "
2448
2449 for n in $COMPONENT_LIST; do
2450     v=$(toupper ${n%s})_LIST
2451     eval enable \$$v
2452     eval ${n}_if_any="\$$v"
2453 done
2454
2455 enable $ARCH_EXT_LIST
2456
2457 die_unknown(){
2458     echo "Unknown option \"$1\"."
2459     echo "See $0 --help for available options."
2460     exit 1
2461 }
2462
2463 print_3_columns() {
2464     cat | tr ' ' '\n' | sort | pr -r -3 -t
2465 }
2466
2467 show_list() {
2468     suffix=_$1
2469     shift
2470     echo $* | sed s/$suffix//g | print_3_columns
2471     exit 0
2472 }
2473
2474 rand_list(){
2475     IFS=', '
2476     set -- $*
2477     unset IFS
2478     for thing; do
2479         comp=${thing%:*}
2480         prob=${thing#$comp}
2481         prob=${prob#:}
2482         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2483         echo "prob ${prob:-0.5}"
2484         printf '%s\n' $comp
2485     done
2486 }
2487
2488 do_random(){
2489     action=$1
2490     shift
2491     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2492     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2493 }
2494
2495 for opt do
2496     optval="${opt#*=}"
2497     case "$opt" in
2498         --extra-ldflags=*)
2499             add_ldflags $optval
2500         ;;
2501         --extra-libs=*)
2502             add_extralibs $optval
2503         ;;
2504         --disable-devices)
2505             disable $INDEV_LIST $OUTDEV_LIST
2506         ;;
2507         --enable-debug=*)
2508             debuglevel="$optval"
2509         ;;
2510         --disable-programs)
2511             disable $PROGRAM_LIST
2512         ;;
2513         --disable-everything)
2514             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2515         ;;
2516         --disable-all)
2517             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2518             disable $LIBRARY_LIST $PROGRAM_LIST doc
2519         ;;
2520         --enable-random|--disable-random)
2521             action=${opt%%-random}
2522             do_random ${action#--} $COMPONENT_LIST
2523         ;;
2524         --enable-random=*|--disable-random=*)
2525             action=${opt%%-random=*}
2526             do_random ${action#--} $optval
2527         ;;
2528         --enable-*=*|--disable-*=*)
2529             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2530             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2531             eval list=\$$(toupper $thing)_LIST
2532             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2533             list=$(filter "$name" $list)
2534             [ "$list" = "" ] && warn "Option $opt did not match anything"
2535             $action $list
2536         ;;
2537         --enable-?*|--disable-?*)
2538             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2539             if is_in $option $COMPONENT_LIST; then
2540                 test $action = disable && action=unset
2541                 eval $action \$$(toupper ${option%s})_LIST
2542             elif is_in $option $CMDLINE_SELECT; then
2543                 $action $option
2544             else
2545                 die_unknown $opt
2546             fi
2547         ;;
2548         --list-*)
2549             NAME="${opt#--list-}"
2550             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2551             NAME=${NAME%s}
2552             eval show_list $NAME \$$(toupper $NAME)_LIST
2553         ;;
2554         --help|-h) show_help
2555         ;;
2556         --fatal-warnings) enable fatal_warnings
2557         ;;
2558         *)
2559             optname="${opt%%=*}"
2560             optname="${optname#--}"
2561             optname=$(echo "$optname" | sed 's/-/_/g')
2562             if is_in $optname $CMDLINE_SET; then
2563                 eval $optname='$optval'
2564             elif is_in $optname $CMDLINE_APPEND; then
2565                 append $optname "$optval"
2566             else
2567                 die_unknown $opt
2568             fi
2569         ;;
2570     esac
2571 done
2572
2573 disabled logging && logfile=/dev/null
2574
2575 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2576 set >> $logfile
2577
2578 test -n "$cross_prefix" && enable cross_compile
2579
2580 if enabled cross_compile; then
2581     test -n "$arch" && test -n "$target_os" ||
2582         die "Must specify target arch and OS when cross-compiling"
2583 fi
2584
2585 ar_default="${cross_prefix}${ar_default}"
2586 cc_default="${cross_prefix}${cc_default}"
2587 cxx_default="${cross_prefix}${cxx_default}"
2588 nm_default="${cross_prefix}${nm_default}"
2589 pkg_config_default="${cross_prefix}${pkg_config_default}"
2590 ranlib="${cross_prefix}${ranlib}"
2591 strip_default="${cross_prefix}${strip_default}"
2592
2593 sysinclude_default="${sysroot}/usr/include"
2594
2595 test -n "$valgrind" && toolchain="valgrind-memcheck"
2596
2597 case "$toolchain" in
2598     clang-asan)
2599         cc_default="clang"
2600         add_cflags  -fsanitize=address
2601         add_ldflags -fsanitize=address
2602     ;;
2603     clang-tsan)
2604         cc_default="clang"
2605         add_cflags  -fsanitize=thread -pie
2606         add_ldflags -fsanitize=thread -pie
2607     ;;
2608     gcc-asan)
2609         cc_default="gcc"
2610         add_cflags  -fsanitize=address
2611         add_ldflags -fsanitize=address
2612     ;;
2613     gcc-tsan)
2614         cc_default="gcc"
2615         add_cflags  -fsanitize=thread -pie -fPIC
2616         add_ldflags -fsanitize=thread -pie -fPIC
2617     ;;
2618     valgrind-massif)
2619         target_exec_default=${valgrind:-"valgrind"}
2620         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"
2621     ;;
2622     valgrind-memcheck)
2623         target_exec_default=${valgrind:-"valgrind"}
2624         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2625     ;;
2626     msvc)
2627         # Check whether the current MSVC version needs the C99 converter.
2628         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2629         # support enough of C99 to build ffmpeg. Default to the new
2630         # behaviour if the regexp was unable to match anything, since this
2631         # successfully parses the version number of existing supported
2632         # versions that require the converter (MSVC 2010 and 2012).
2633         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2634         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2635             cc_default="cl"
2636         else
2637             cc_default="c99wrap cl"
2638         fi
2639         ld_default="link"
2640         nm_default="dumpbin -symbols"
2641         ar_default="lib"
2642         target_os_default="win32"
2643         # Use a relative path for TMPDIR. This makes sure all the
2644         # ffconf temp files are written with a relative path, avoiding
2645         # issues with msys/win32 path conversion for MSVC parameters
2646         # such as -Fo<file> or -out:<file>.
2647         TMPDIR=.
2648     ;;
2649     icl)
2650         cc_default="icl"
2651         ld_default="xilink"
2652         nm_default="dumpbin -symbols"
2653         ar_default="xilib"
2654         target_os_default="win32"
2655         TMPDIR=.
2656     ;;
2657     gcov)
2658         add_cflags  -fprofile-arcs -ftest-coverage
2659         add_ldflags -fprofile-arcs -ftest-coverage
2660     ;;
2661     hardened)
2662         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2663         add_ldflags -Wl,-z,relro -Wl,-z,now
2664     ;;
2665     ?*)
2666         die "Unknown toolchain $toolchain"
2667     ;;
2668 esac
2669
2670 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2671 enabled cross_compile || host_cc_default=$cc
2672 set_default host_cc
2673
2674 if ! $pkg_config --version >/dev/null 2>&1; then
2675     warn "$pkg_config not found, library detection may fail."
2676     pkg_config=false
2677 fi
2678
2679 exesuf() {
2680     case $1 in
2681         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2682     esac
2683 }
2684
2685 EXESUF=$(exesuf $target_os)
2686 HOSTEXESUF=$(exesuf $host_os)
2687
2688 # set temporary file name
2689 : ${TMPDIR:=$TEMPDIR}
2690 : ${TMPDIR:=$TMP}
2691 : ${TMPDIR:=/tmp}
2692
2693 if [ -n "$tempprefix" ] ; then
2694     mktemp(){
2695         echo $tempprefix.${HOSTNAME}.${UID}
2696     }
2697 elif ! check_cmd mktemp -u XXXXXX; then
2698     # simple replacement for missing mktemp
2699     # NOT SAFE FOR GENERAL USE
2700     mktemp(){
2701         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2702     }
2703 fi
2704
2705 tmpfile(){
2706     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2707         (set -C; exec > $tmp) 2>/dev/null ||
2708         die "Unable to create temporary file in $TMPDIR."
2709     append TMPFILES $tmp
2710     eval $1=$tmp
2711 }
2712
2713 trap 'rm -f -- $TMPFILES' EXIT
2714
2715 tmpfile TMPASM .asm
2716 tmpfile TMPC   .c
2717 tmpfile TMPCPP .cpp
2718 tmpfile TMPE   $EXESUF
2719 tmpfile TMPH   .h
2720 tmpfile TMPO   .o
2721 tmpfile TMPS   .S
2722 tmpfile TMPSH  .sh
2723 tmpfile TMPV   .ver
2724
2725 unset -f mktemp
2726
2727 chmod +x $TMPE
2728
2729 # make sure we can execute files in $TMPDIR
2730 cat > $TMPSH 2>> $logfile <<EOF
2731 #! /bin/sh
2732 EOF
2733 chmod +x $TMPSH >> $logfile 2>&1
2734 if ! $TMPSH >> $logfile 2>&1; then
2735     cat <<EOF
2736 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2737 variable to another directory and make sure that it is not mounted noexec.
2738 EOF
2739     die "Sanity test failed."
2740 fi
2741
2742 ccc_flags(){
2743     for flag; do
2744         case $flag in
2745             -std=c99)           echo -c99                       ;;
2746             -mcpu=*)            echo -arch ${flag#*=}           ;;
2747             -mieee)             echo -ieee                      ;;
2748             -O*|-fast)          echo $flag                      ;;
2749             -fno-math-errno)    echo -assume nomath_errno       ;;
2750             -g)                 echo -g3                        ;;
2751             -Wall)              echo -msg_enable level2         ;;
2752             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2753             -Wl,*)              echo $flag                      ;;
2754             -f*|-W*)                                            ;;
2755             *)                  echo $flag                      ;;
2756         esac
2757    done
2758 }
2759
2760 cparser_flags(){
2761     for flag; do
2762         case $flag in
2763             -Wno-switch)             echo -Wno-switch-enum ;;
2764             -Wno-format-zero-length) ;;
2765             -Wdisabled-optimization) ;;
2766             -Wno-pointer-sign)       echo -Wno-other ;;
2767             *)                       echo $flag ;;
2768         esac
2769     done
2770 }
2771
2772 msvc_common_flags(){
2773     for flag; do
2774         case $flag in
2775             # In addition to specifying certain flags under the compiler
2776             # specific filters, they must be specified here as well or else the
2777             # generic catch all at the bottom will print the original flag.
2778             -Wall)                ;;
2779             -std=c99)             ;;
2780             # Common flags
2781             -fomit-frame-pointer) ;;
2782             -g)                   echo -Z7 ;;
2783             -fno-math-errno)      ;;
2784             -fno-common)          ;;
2785             -fno-signed-zeros)    ;;
2786             -fPIC)                ;;
2787             -mthumb)              ;;
2788             -march=*)             ;;
2789             -lz)                  echo zlib.lib ;;
2790             -lavifil32)           echo vfw32.lib ;;
2791             -lavicap32)           echo vfw32.lib user32.lib ;;
2792             -l*)                  echo ${flag#-l}.lib ;;
2793             *)                    echo $flag ;;
2794         esac
2795     done
2796 }
2797
2798 msvc_flags(){
2799     msvc_common_flags "$@"
2800     for flag; do
2801         case $flag in
2802             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2803                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2804                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2805                                        -wd4554 \
2806                                        -wd4273 ;;
2807         esac
2808     done
2809 }
2810
2811 icl_flags(){
2812     msvc_common_flags "$@"
2813     for flag; do
2814         case $flag in
2815             # Despite what Intel's documentation says -Wall, which is supported
2816             # on Windows, does enable remarks so disable them here.
2817             -Wall)                echo $flag -Qdiag-disable:remark ;;
2818             -std=c99)             echo -Qstd=c99 ;;
2819         esac
2820     done
2821 }
2822
2823 pgi_flags(){
2824     for flag; do
2825         case $flag in
2826             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2827             -fomit-frame-pointer) echo -Mnoframe ;;
2828             -g)                   echo -gopt ;;
2829             *)                    echo $flag ;;
2830         esac
2831     done
2832 }
2833
2834 suncc_flags(){
2835     for flag; do
2836         case $flag in
2837             -march=*|-mcpu=*)
2838                 case "${flag#*=}" in
2839                     native)                   echo -xtarget=native       ;;
2840                     v9|niagara)               echo -xarch=sparc          ;;
2841                     ultrasparc)               echo -xarch=sparcvis       ;;
2842                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2843                     i586|pentium)             echo -xchip=pentium        ;;
2844                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2845                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2846                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2847                     pentium4*)          echo -xtarget=pentium4           ;;
2848                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2849                     *-sse3)             echo -xarch=sse3                 ;;
2850                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2851                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2852                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2853                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2854                     bdver*)                    echo -xarch=avx           ;;
2855                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2856                     k8|opteron|athlon64|athlon-fx)
2857                                                echo -xarch=sse2a         ;;
2858                     athlon*)                   echo -xarch=pentium_proa  ;;
2859                 esac
2860                 ;;
2861             -std=c99)             echo -xc99              ;;
2862             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2863             -fPIC)                echo -KPIC -xcode=pic32 ;;
2864             -W*,*)                echo $flag              ;;
2865             -f*-*|-W*|-mimpure-text)                      ;;
2866             -shared)              echo -G                 ;;
2867             *)                    echo $flag              ;;
2868         esac
2869     done
2870 }
2871
2872 tms470_flags(){
2873     for flag; do
2874         case $flag in
2875             -march=*|-mcpu=*)
2876                 case "${flag#*=}" in
2877                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2878                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2879                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2880                     armv6*|arm11*)          echo -mv=6   ;;
2881                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2882                                             echo -mv=5e  ;;
2883                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2884                 esac
2885                 ;;
2886             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2887             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2888             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2889             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2890             -msoft-float)   echo --float_support=vfplib       ;;
2891             -O[0-3]|-mf=*)  echo $flag                        ;;
2892             -g)             echo -g -mn                       ;;
2893             -pds=*)         echo $flag                        ;;
2894             -D*|-I*)        echo $flag                        ;;
2895             --gcc|--abi=*)  echo $flag                        ;;
2896             -me)            echo $flag                        ;;
2897         esac
2898     done
2899 }
2900
2901 probe_cc(){
2902     pfx=$1
2903     _cc=$2
2904
2905     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2906     unset _ld_o _ldflags _ld_lib _ld_path
2907     unset _depflags _DEPCMD _DEPFLAGS
2908     _flags_filter=echo
2909
2910     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2911         true # no-op to avoid reading stdin in following checks
2912     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2913         _type=llvm_gcc
2914         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2915         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2916         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2920         _type=gcc
2921         gcc_version=$($_cc --version | head -n1)
2922         gcc_basever=$($_cc -dumpversion)
2923         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2924         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2925         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2926         if ! $_cc -dumpversion | grep -q '^2\.'; then
2927             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2928         fi
2929         _cflags_speed='-O3'
2930         _cflags_size='-Os'
2931     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2932         _type=icc
2933         _ident=$($_cc --version | head -n1)
2934         _depflags='-MMD'
2935         _cflags_speed='-O3'
2936         _cflags_size='-Os'
2937         _cflags_noopt='-O1'
2938     elif $_cc -v 2>&1 | grep -q xlc; then
2939         _type=xlc
2940         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2941         _cflags_speed='-O5'
2942         _cflags_size='-O5 -qcompact'
2943     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2944         _type=ccc
2945         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2946         _DEPFLAGS='-M'
2947         _cflags_speed='-fast'
2948         _cflags_size='-O1'
2949         _flags_filter=ccc_flags
2950     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2951         test -d "$sysroot" || die "No valid sysroot specified."
2952         _type=armcc
2953         _ident=$($_cc --vsn | head -n1)
2954         armcc_conf="$PWD/armcc.conf"
2955         $_cc --arm_linux_configure                 \
2956              --arm_linux_config_file="$armcc_conf" \
2957              --configure_sysroot="$sysroot"        \
2958              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2959              die "Error creating armcc configuration file."
2960         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2961         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2962         as_default="${cross_prefix}gcc"
2963         _depflags='-MMD'
2964         _cflags_speed='-O3'
2965         _cflags_size='-Os'
2966     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2967         _type=tms470
2968         _ident=$($_cc -version | head -n1 | tr -s ' ')
2969         _flags='--gcc --abi=eabi -me'
2970         _cc_e='-ppl -fe=$@'
2971         _cc_o='-fe=$@'
2972         _depflags='-ppa -ppd=$(@:.o=.d)'
2973         _cflags_speed='-O3 -mf=5'
2974         _cflags_size='-O3 -mf=2'
2975         _flags_filter=tms470_flags
2976     elif $_cc -v 2>&1 | grep -q clang; then
2977         _type=clang
2978         _ident=$($_cc --version | head -n1)
2979         _depflags='-MMD'
2980         _cflags_speed='-O3'
2981         _cflags_size='-Os'
2982     elif $_cc -V 2>&1 | grep -q Sun; then
2983         _type=suncc
2984         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2985         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2986         _DEPFLAGS='-xM1 -xc99'
2987         _ldflags='-std=c99'
2988         _cflags_speed='-O5'
2989         _cflags_size='-O5 -xspace'
2990         _flags_filter=suncc_flags
2991     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2992         _type=pathscale
2993         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2994         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2995         _cflags_speed='-O2'
2996         _cflags_size='-Os'
2997         _flags_filter='filter_out -Wdisabled-optimization'
2998     elif $_cc -v 2>&1 | grep -q Open64; then
2999         _type=open64
3000         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3001         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3002         _cflags_speed='-O2'
3003         _cflags_size='-Os'
3004         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3005     elif $_cc -V 2>&1 | grep -q Portland; then
3006         _type=pgi
3007         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3008         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3009         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3010         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3011         _cflags_noopt="-O"
3012         _flags_filter=pgi_flags
3013     elif $_cc 2>&1 | grep -q Microsoft; then
3014         _type=msvc
3015         _ident=$($cc 2>&1 | head -n1)
3016         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3017         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3018         _cflags_speed="-O2"
3019         _cflags_size="-O1"
3020         if $_cc 2>&1 | grep -q Linker; then
3021             _ld_o='-out:$@'
3022         else
3023             _ld_o='-Fe$@'
3024         fi
3025         _cc_o='-Fo$@'
3026         _cc_e='-P -Fi$@'
3027         _flags_filter=msvc_flags
3028         _ld_lib='lib%.a'
3029         _ld_path='-libpath:'
3030         _flags='-nologo'
3031         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3032         if [ $pfx = hostcc ]; then
3033             append _cflags -Dsnprintf=_snprintf
3034         fi
3035         disable stripping
3036     elif $_cc 2>&1 | grep -q Intel; then
3037         _type=icl
3038         _ident=$($cc 2>&1 | head -n1)
3039         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3040         # Not only is O3 broken on 13.x+ but it is slower on all previous
3041         # versions (tested) as well.
3042         _cflags_speed="-O2"
3043         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3044         if $_cc 2>&1 | grep -q Linker; then
3045             _ld_o='-out:$@'
3046         else
3047             _ld_o='-Fe$@'
3048         fi
3049         _cc_o='-Fo$@'
3050         _cc_e='-P'
3051         _flags_filter=icl_flags
3052         _ld_lib='lib%.a'
3053         _ld_path='-libpath:'
3054         # -Qdiag-error to make icl error when seeing certain unknown arguments
3055         _flags='-nologo -Qdiag-error:4044,10157'
3056         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3057         # with MSVC which enables it by default.
3058         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3059         if [ $pfx = hostcc ]; then
3060             append _cflags -Dsnprintf=_snprintf
3061         fi
3062     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3063         _type=cparser
3064         _ident=$($_cc --version | head -n1)
3065         _depflags='-MMD'
3066         _cflags_speed='-O4'
3067         _cflags_size='-O2'
3068         _flags_filter=cparser_flags
3069     fi
3070
3071     eval ${pfx}_type=\$_type
3072     eval ${pfx}_ident=\$_ident
3073 }
3074
3075 set_ccvars(){
3076     eval ${1}_C=\${_cc_c-\${${1}_C}}
3077     eval ${1}_E=\${_cc_e-\${${1}_E}}
3078     eval ${1}_O=\${_cc_o-\${${1}_O}}
3079
3080     if [ -n "$_depflags" ]; then
3081         eval ${1}_DEPFLAGS=\$_depflags
3082     else
3083         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3084         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3085         eval DEP${1}FLAGS=\$_flags
3086     fi
3087 }
3088
3089 probe_cc cc "$cc"
3090 cflags_filter=$_flags_filter
3091 cflags_speed=$_cflags_speed
3092 cflags_size=$_cflags_size
3093 cflags_noopt=$_cflags_noopt
3094 add_cflags $_flags $_cflags
3095 cc_ldflags=$_ldflags
3096 set_ccvars CC
3097
3098 probe_cc hostcc "$host_cc"
3099 host_cflags_filter=$_flags_filter
3100 add_host_cflags  $_flags $_cflags
3101 set_ccvars HOSTCC
3102
3103 test -n "$cc_type" && enable $cc_type ||
3104     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3105
3106 : ${as_default:=$cc}
3107 : ${dep_cc_default:=$cc}
3108 : ${ld_default:=$cc}
3109 : ${host_ld_default:=$host_cc}
3110 set_default ar as dep_cc ld host_ld
3111
3112 probe_cc as "$as"
3113 asflags_filter=$_flags_filter
3114 add_asflags $_flags $_cflags
3115 set_ccvars AS
3116
3117 probe_cc ld "$ld"
3118 ldflags_filter=$_flags_filter
3119 add_ldflags $_flags $_ldflags
3120 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3121 LD_O=${_ld_o-$LD_O}
3122 LD_LIB=${_ld_lib-$LD_LIB}
3123 LD_PATH=${_ld_path-$LD_PATH}
3124
3125 probe_cc hostld "$host_ld"
3126 host_ldflags_filter=$_flags_filter
3127 add_host_ldflags $_flags $_ldflags
3128 HOSTLD_O=${_ld_o-$HOSTLD_O}
3129
3130 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3131     probe_cc depcc "$dep_cc"
3132     CCDEP=${_DEPCMD:-$DEPCMD}
3133     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3134     DEPCCFLAGS=$_flags
3135 fi
3136
3137 if $ar 2>&1 | grep -q Microsoft; then
3138     arflags="-nologo"
3139     ar_o='-out:$@'
3140 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3141     arflags="rq"
3142     ar_o='$@'
3143 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3144     arflags='-Xany -r -c'
3145     ar_o='$@'
3146 else
3147     arflags="rc"
3148     ar_o='$@'
3149 fi
3150
3151 add_cflags $extra_cflags
3152 add_cxxflags $extra_cxxflags
3153 add_asflags $extra_cflags
3154
3155 if test -n "$sysroot"; then
3156     case "$cc_type" in
3157         gcc|llvm_gcc|clang)
3158             add_cppflags --sysroot="$sysroot"
3159             add_ldflags --sysroot="$sysroot"
3160         ;;
3161         tms470)
3162             add_cppflags -I"$sysinclude"
3163             add_ldflags  --sysroot="$sysroot"
3164         ;;
3165     esac
3166 fi
3167
3168 if test "$cpu" = host; then
3169     enabled cross_compile &&
3170         die "--cpu=host makes no sense when cross-compiling."
3171
3172     case "$cc_type" in
3173         gcc|llvm_gcc)
3174             check_native(){
3175                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3176                 sed -n "/cc1.*$1=/{
3177                             s/.*$1=\\([^ ]*\\).*/\\1/
3178                             p
3179                             q
3180                         }" $TMPE
3181             }
3182             cpu=$(check_native -march || check_native -mcpu)
3183         ;;
3184     esac
3185
3186     test "${cpu:-host}" = host &&
3187         die "--cpu=host not supported with compiler $cc"
3188 fi
3189
3190 # Deal with common $arch aliases
3191 case "$arch" in
3192     aarch64|arm64)
3193         arch="aarch64"
3194     ;;
3195     arm*|iPad*|iPhone*)
3196         arch="arm"
3197     ;;
3198     mips*|IP*)
3199         arch="mips"
3200     ;;
3201     parisc*|hppa*)
3202         arch="parisc"
3203     ;;
3204     "Power Macintosh"|ppc*|powerpc*)
3205         arch="ppc"
3206     ;;
3207     s390|s390x)
3208         arch="s390"
3209     ;;
3210     sh4|sh)
3211         arch="sh4"
3212     ;;
3213     sun4u|sparc*)
3214         arch="sparc"
3215     ;;
3216     tilegx|tile-gx)
3217         arch="tilegx"
3218     ;;
3219     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3220         arch="x86"
3221     ;;
3222 esac
3223
3224 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3225 enable $arch
3226
3227 # Add processor-specific flags
3228 if enabled aarch64; then
3229
3230     case $cpu in
3231         armv*)
3232             cpuflags="-march=$cpu"
3233         ;;
3234         *)
3235             cpuflags="-mcpu=$cpu"
3236         ;;
3237     esac
3238
3239 elif enabled alpha; then
3240
3241     cpuflags="-mcpu=$cpu"
3242
3243 elif enabled arm; then
3244
3245     check_arm_arch() {
3246         check_cpp_condition stddef.h \
3247             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3248             $cpuflags
3249     }
3250
3251     probe_arm_arch() {
3252         if   check_arm_arch 4;        then echo armv4;
3253         elif check_arm_arch 4T;       then echo armv4t;
3254         elif check_arm_arch 5;        then echo armv5;
3255         elif check_arm_arch 5E;       then echo armv5e;
3256         elif check_arm_arch 5T;       then echo armv5t;
3257         elif check_arm_arch 5TE;      then echo armv5te;
3258         elif check_arm_arch 5TEJ;     then echo armv5te;
3259         elif check_arm_arch 6;        then echo armv6;
3260         elif check_arm_arch 6J;       then echo armv6j;
3261         elif check_arm_arch 6K;       then echo armv6k;
3262         elif check_arm_arch 6Z;       then echo armv6z;
3263         elif check_arm_arch 6ZK;      then echo armv6zk;
3264         elif check_arm_arch 6T2;      then echo armv6t2;
3265         elif check_arm_arch 7;        then echo armv7;
3266         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3267         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3268         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3269         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3270         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3271         fi
3272     }
3273
3274     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3275
3276     case $cpu in
3277         armv*)
3278             cpuflags="-march=$cpu"
3279             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3280         ;;
3281         *)
3282             cpuflags="-mcpu=$cpu"
3283             case $cpu in
3284                 cortex-a*)                               subarch=armv7a  ;;
3285                 cortex-r*)                               subarch=armv7r  ;;
3286                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3287                 arm11*)                                  subarch=armv6   ;;
3288                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3289                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3290                 *)                             subarch=$(probe_arm_arch) ;;
3291             esac
3292         ;;
3293     esac
3294
3295     case "$subarch" in
3296         armv5t*)    enable fast_clz                ;;
3297         armv[6-8]*) enable fast_clz fast_unaligned ;;
3298     esac
3299
3300 elif enabled avr32; then
3301
3302     case $cpu in
3303         ap7[02]0[0-2])
3304             subarch="avr32_ap"
3305             cpuflags="-mpart=$cpu"
3306         ;;
3307         ap)
3308             subarch="avr32_ap"
3309             cpuflags="-march=$cpu"
3310         ;;
3311         uc3[ab]*)
3312             subarch="avr32_uc"
3313             cpuflags="-mcpu=$cpu"
3314         ;;
3315         uc)
3316             subarch="avr32_uc"
3317             cpuflags="-march=$cpu"
3318         ;;
3319     esac
3320
3321 elif enabled bfin; then
3322
3323     cpuflags="-mcpu=$cpu"
3324
3325 elif enabled mips; then
3326
3327     cpuflags="-march=$cpu"
3328
3329     case $cpu in
3330         24kc)
3331             disable mipsfpu
3332             disable mipsdspr1
3333             disable mipsdspr2
3334         ;;
3335         24kf*)
3336             disable mipsdspr1
3337             disable mipsdspr2
3338         ;;
3339         24kec|34kc|1004kc)
3340             disable mipsfpu
3341             disable mipsdspr2
3342         ;;
3343         24kef*|34kf*|1004kf*)
3344             disable mipsdspr2
3345         ;;
3346         74kc)
3347             disable mipsfpu
3348         ;;
3349     esac
3350
3351 elif enabled ppc; then
3352
3353     case $(tolower $cpu) in
3354         601|ppc601|powerpc601)
3355             cpuflags="-mcpu=601"
3356             disable altivec
3357         ;;
3358         603*|ppc603*|powerpc603*)
3359             cpuflags="-mcpu=603"
3360             disable altivec
3361         ;;
3362         604*|ppc604*|powerpc604*)
3363             cpuflags="-mcpu=604"
3364             disable altivec
3365         ;;
3366         g3|75*|ppc75*|powerpc75*)
3367             cpuflags="-mcpu=750"
3368             disable altivec
3369         ;;
3370         g4|745*|ppc745*|powerpc745*)
3371             cpuflags="-mcpu=7450"
3372         ;;
3373         74*|ppc74*|powerpc74*)
3374             cpuflags="-mcpu=7400"
3375         ;;
3376         g5|970|ppc970|powerpc970)
3377             cpuflags="-mcpu=970"
3378         ;;
3379         power[3-7]*)
3380             cpuflags="-mcpu=$cpu"
3381         ;;
3382         cell)
3383             cpuflags="-mcpu=cell"
3384             enable ldbrx
3385         ;;
3386         e500mc)
3387             cpuflags="-mcpu=e500mc"
3388             disable altivec
3389         ;;
3390         e500v2)
3391             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3392             disable altivec
3393         ;;
3394         e500)
3395             cpuflags="-mcpu=8540 -mhard-float"
3396             disable altivec
3397         ;;
3398     esac
3399
3400 elif enabled sparc; then
3401
3402     case $cpu in
3403         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3404             cpuflags="-mcpu=$cpu"
3405             disable vis
3406         ;;
3407         ultrasparc*|niagara[234])
3408             cpuflags="-mcpu=$cpu"
3409         ;;
3410     esac
3411
3412 elif enabled x86; then
3413
3414     case $cpu in
3415         i[345]86|pentium)
3416             cpuflags="-march=$cpu"
3417             disable mmx
3418         ;;
3419         # targets that do NOT support nopl and conditional mov (cmov)
3420         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3421             cpuflags="-march=$cpu"
3422             disable i686
3423         ;;
3424         # targets that do support nopl and conditional mov (cmov)
3425         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3426             cpuflags="-march=$cpu"
3427             enable i686
3428             enable fast_cmov
3429         ;;
3430         # targets that do support conditional mov but on which it's slow
3431         pentium4|pentium4m|prescott|nocona)
3432             cpuflags="-march=$cpu"
3433             enable i686
3434             disable fast_cmov
3435         ;;
3436     esac
3437
3438 fi
3439
3440 if [ "$cpu" != generic ]; then
3441     add_cflags  $cpuflags
3442     add_asflags $cpuflags
3443 fi
3444
3445 # compiler sanity check
3446 check_exec <<EOF
3447 int main(void){ return 0; }
3448 EOF
3449 if test "$?" != 0; then
3450     echo "$cc is unable to create an executable file."
3451     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3452         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3453         echo "Only do this if you know what cross compiling means."
3454     fi
3455     die "C compiler test failed."
3456 fi
3457
3458 add_cppflags -D_ISOC99_SOURCE
3459 add_cxxflags -D__STDC_CONSTANT_MACROS
3460 check_cflags -std=c99
3461 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3462 #include <stdlib.h>
3463 EOF
3464 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3465 #include <stdlib.h>
3466 EOF
3467
3468 check_host_cflags -std=c99
3469 check_host_cflags -Wall
3470
3471 check_64bit(){
3472     arch32=$1
3473     arch64=$2
3474     expr=$3
3475     check_code cc "" "int test[2*($expr) - 1]" &&
3476         subarch=$arch64 || subarch=$arch32
3477 }
3478
3479 case "$arch" in
3480     aarch64|alpha|ia64)
3481         spic=$shared
3482     ;;
3483     mips)
3484         check_64bit mips mips64 '_MIPS_SIM > 1'
3485         spic=$shared
3486     ;;
3487     parisc)
3488         check_64bit parisc parisc64 'sizeof(void *) > 4'
3489         spic=$shared
3490     ;;
3491     ppc)
3492         check_64bit ppc ppc64 'sizeof(void *) > 4'
3493         spic=$shared
3494     ;;
3495     sparc)
3496         check_64bit sparc sparc64 'sizeof(void *) > 4'
3497         spic=$shared
3498     ;;
3499     x86)
3500         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3501         if test "$subarch" = "x86_64"; then
3502             spic=$shared
3503         fi
3504     ;;
3505     ppc)
3506         check_cc <<EOF && subarch="ppc64"
3507         int test[(int)sizeof(char*) - 7];
3508 EOF
3509     ;;
3510 esac
3511
3512 enable $subarch
3513 enabled spic && enable_weak pic
3514
3515 # OS specific
3516 case $target_os in
3517     aix)
3518         SHFLAGS=-shared
3519         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3520         enabled shared && add_ldflags -Wl,-brtl
3521         ;;
3522     haiku)
3523         prefix_default="/boot/common"
3524         network_extralibs="-lnetwork"
3525         host_libs=
3526         ;;
3527     sunos)
3528         SHFLAGS='-shared -Wl,-h,$$(@F)'
3529         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3530         network_extralibs="-lsocket -lnsl"
3531         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3532         # When using suncc to build, the Solaris linker will mark
3533         # an executable with each instruction set encountered by
3534         # the Solaris assembler.  As our libraries contain their own
3535         # guards for processor-specific code, instead suppress
3536         # generation of the HWCAPS ELF section on Solaris x86 only.
3537         enabled_all suncc x86 &&
3538             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3539             add_ldflags -Wl,-M,mapfile
3540         nm_default='nm -P -g'
3541         ;;
3542     netbsd)
3543         disable symver
3544         oss_indev_extralibs="-lossaudio"
3545         oss_outdev_extralibs="-lossaudio"
3546         enabled gcc || check_ldflags -Wl,-zmuldefs
3547         ;;
3548     openbsd|bitrig)
3549         disable symver
3550         SHFLAGS='-shared'
3551         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3552         SLIB_INSTALL_LINKS=
3553         oss_indev_extralibs="-lossaudio"
3554         oss_outdev_extralibs="-lossaudio"
3555         ;;
3556     dragonfly)
3557         disable symver
3558         ;;
3559     freebsd)
3560         ;;
3561     bsd/os)
3562         add_extralibs -lpoll -lgnugetopt
3563         strip="strip -d"
3564         ;;
3565     darwin)
3566         gas="gas-preprocessor.pl $cc"
3567         enabled ppc && add_asflags -force_cpusubtype_ALL
3568         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3569         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3570         strip="${strip} -x"
3571         add_ldflags -Wl,-dynamic,-search_paths_first
3572         SLIBSUF=".dylib"
3573         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3574         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3575         objformat="macho"
3576         enabled x86_64 && objformat="macho64"
3577         enabled_any pic shared ||
3578             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3579         ;;
3580     mingw32*)
3581         if test $target_os = "mingw32ce"; then
3582             disable network
3583         else
3584             target_os=mingw32
3585         fi
3586         LIBTARGET=i386
3587         if enabled x86_64; then
3588             LIBTARGET="i386:x86-64"
3589         elif enabled arm; then
3590             LIBTARGET=arm-wince
3591         fi
3592         check_ldflags -Wl,--nxcompat
3593         check_ldflags -Wl,--dynamicbase
3594         shlibdir_default="$bindir_default"
3595         SLIBPREF=""
3596         SLIBSUF=".dll"
3597         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3598         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3599         dlltool="${cross_prefix}dlltool"
3600         if check_cmd lib.exe -list; then
3601             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3602             if enabled x86_64; then
3603                 LIBTARGET=x64
3604             fi
3605         elif check_cmd $dlltool --version; then
3606             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3607         fi
3608         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3609         SLIB_INSTALL_LINKS=
3610         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3611         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3612         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3613         objformat="win32"
3614         ranlib=:
3615         enable dos_paths
3616         ;;
3617     win32|win64)
3618         disable symver
3619         if enabled shared; then
3620             # Link to the import library instead of the normal static library
3621             # for shared libs.
3622             LD_LIB='%.lib'
3623             # Cannot build both shared and static libs with MSVC or icl.
3624             disable static
3625         fi
3626         shlibdir_default="$bindir_default"
3627         SLIBPREF=""
3628         SLIBSUF=".dll"
3629         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3630         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3631         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3632         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3633         SLIB_INSTALL_LINKS=
3634         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3635         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3636         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3637         objformat="win32"
3638         ranlib=:
3639         enable dos_paths
3640         ;;
3641     cygwin*)
3642         target_os=cygwin
3643         shlibdir_default="$bindir_default"
3644         SLIBPREF="cyg"
3645         SLIBSUF=".dll"
3646         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3647         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3648         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3649         SLIB_INSTALL_LINKS=
3650         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3651         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3652         objformat="win32"
3653         enable dos_paths
3654         ;;
3655     *-dos|freedos|opendos)
3656         network_extralibs="-lsocket"
3657         objformat="coff"
3658         enable dos_paths
3659         add_cppflags -U__STRICT_ANSI__
3660         ;;
3661     linux)
3662         enable dv1394
3663         ;;
3664     irix*)
3665         target_os=irix
3666         ranlib="echo ignoring ranlib"
3667         ;;
3668     os/2*)
3669         strip="lxlite -CS"
3670         ln_s="cp -f"
3671         objformat="aout"
3672         add_cppflags -D_GNU_SOURCE
3673         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3674         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3675         LIBSUF="_s.a"
3676         SLIBPREF=""
3677         SLIBSUF=".dll"
3678         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3679         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3680         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3681             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3682             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3683             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3684             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3685             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3686         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3687             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3688         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3689         enable dos_paths
3690         enable_weak os2threads
3691         ;;
3692     gnu/kfreebsd)
3693         add_cppflags -D_BSD_SOURCE
3694         ;;
3695     gnu)
3696         ;;
3697     qnx)
3698         add_cppflags -D_QNX_SOURCE
3699         network_extralibs="-lsocket"
3700         ;;
3701     symbian)
3702         SLIBSUF=".dll"
3703         enable dos_paths
3704         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3705         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3706         add_ldflags -Wl,--target1-abs,--no-undefined \
3707                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3708                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3709         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3710                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3711                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3712         ;;
3713     osf1)
3714         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3715         ;;
3716     minix)
3717         ;;
3718     plan9)
3719         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3720                      -D_REENTRANT_SOURCE        \
3721                      -D_RESEARCH_SOURCE         \
3722                      -DFD_SETSIZE=96            \
3723                      -DHAVE_SOCK_OPTS
3724         add_compat strtod.o strtod=avpriv_strtod
3725         network_extralibs='-lbsd'
3726         exeobjs=compat/plan9/main.o
3727         disable ffserver
3728         cp_f='cp'
3729         ;;
3730     none)
3731         ;;
3732     *)
3733         die "Unknown OS '$target_os'."
3734         ;;
3735 esac
3736
3737 # determine libc flavour
3738
3739 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3740 if check_cpp_condition features.h "defined __UCLIBC__"; then
3741     libc_type=uclibc
3742     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3743 elif check_cpp_condition features.h "defined __GLIBC__"; then
3744     libc_type=glibc
3745     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3746 # MinGW headers can be installed on Cygwin, so check for newlib first.
3747 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3748     libc_type=newlib
3749     add_cppflags -U__STRICT_ANSI__
3750 elif check_header _mingw.h; then
3751     libc_type=mingw
3752     check_cpp_condition _mingw.h \
3753         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3754             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3755         die "ERROR: MinGW runtime version must be >= 3.15."
3756     add_cppflags -U__STRICT_ANSI__
3757     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3758             __MINGW64_VERSION_MAJOR < 3"; then
3759         add_compat msvcrt/snprintf.o
3760         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3761     else
3762         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3763     fi
3764 elif check_func_headers stdlib.h _get_doserrno; then
3765     libc_type=msvcrt
3766     add_compat strtod.o strtod=avpriv_strtod
3767     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3768                                  _snprintf=avpriv_snprintf  \
3769                                  vsnprintf=avpriv_vsnprintf
3770     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3771     # 0x601 by default unless something else is set by the user.
3772     # This can easily lead to us detecting functions only present
3773     # in such new versions and producing binaries requiring windows 7.0.
3774     # Therefore explicitly set the default to XP unless the user has
3775     # set something else on the command line.
3776     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3777 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3778     libc_type=klibc
3779 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3780     libc_type=bionic
3781     add_compat strtod.o strtod=avpriv_strtod
3782 fi
3783
3784 test -n "$libc_type" && enable $libc_type
3785
3786 # hacks for compiler/libc/os combinations
3787
3788 if enabled_all tms470 glibc; then
3789     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3790     add_cppflags -D__USER_LABEL_PREFIX__=
3791     add_cppflags -D__builtin_memset=memset
3792     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3793     add_cflags   -pds=48    # incompatible redefinition of macro
3794 fi
3795
3796 if enabled_all ccc glibc; then
3797     add_ldflags -Wl,-z,now  # calls to libots crash without this
3798 fi
3799
3800 esc(){
3801     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3802 }
3803
3804 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3805
3806 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3807
3808 set_default $PATHS_LIST
3809 set_default nm
3810
3811 # we need to build at least one lib type
3812 if ! enabled_any static shared; then
3813     cat <<EOF
3814 At least one library type must be built.
3815 Specify --enable-static to build the static libraries or --enable-shared to
3816 build the shared libraries as well. To only build the shared libraries specify
3817 --disable-static in addition to --enable-shared.
3818 EOF
3819     exit 1;
3820 fi
3821
3822 # backward compatibility layer for incompatible_libav/fork_abi
3823 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3824 enabled incompatible_libav_abi && enable incompatible_fork_abi
3825
3826 die_license_disabled() {
3827     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3828 }
3829
3830 die_license_disabled_gpl() {
3831     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3832 }
3833
3834 die_license_disabled gpl frei0r
3835 die_license_disabled gpl libcdio
3836 die_license_disabled gpl libutvideo
3837 die_license_disabled gpl libvidstab
3838 die_license_disabled gpl libx264
3839 die_license_disabled gpl libxavs
3840 die_license_disabled gpl libxvid
3841 die_license_disabled gpl libzvbi
3842 die_license_disabled gpl x11grab
3843
3844 die_license_disabled nonfree libaacplus
3845 die_license_disabled nonfree libfaac
3846 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3847 enabled gpl && die_license_disabled_gpl nonfree openssl
3848
3849 die_license_disabled version3 libopencore_amrnb
3850 die_license_disabled version3 libopencore_amrwb
3851 die_license_disabled version3 libvo_aacenc
3852 die_license_disabled version3 libvo_amrwbenc
3853
3854 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3855
3856 disabled optimizations || check_cflags -fomit-frame-pointer
3857
3858 enable_weak_pic() {
3859     disabled pic && return
3860     enable pic
3861     add_cppflags -DPIC
3862     case "$target_os" in
3863     mingw*|cygwin*)
3864         ;;
3865     *)
3866         add_cflags -fPIC
3867         ;;
3868     esac
3869     add_asflags  -fPIC
3870 }
3871
3872 enabled pic && enable_weak_pic
3873
3874 check_cc <<EOF || die "Symbol mangling check failed."
3875 int ff_extern;
3876 EOF
3877 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3878 extern_prefix=${sym%%ff_extern*}
3879
3880 check_cc <<EOF && enable_weak inline_asm
3881 void foo(void) { __asm__ volatile ("" ::); }
3882 EOF
3883
3884 _restrict=
3885 for restrict_keyword in restrict __restrict__ __restrict; do
3886     check_cc <<EOF && _restrict=$restrict_keyword && break
3887 void foo(char * $restrict_keyword p);
3888 EOF
3889 done
3890
3891 check_cc <<EOF && enable pragma_deprecated
3892 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3893 EOF
3894
3895 check_cc <<EOF && enable attribute_packed
3896 struct { int x; } __attribute__((packed)) x;
3897 EOF
3898
3899 check_cc <<EOF && enable attribute_may_alias
3900 union { int x; } __attribute__((may_alias)) x;
3901 EOF
3902
3903 check_cc <<EOF || die "endian test failed"
3904 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3905 EOF
3906 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3907
3908 check_inline_asm inline_asm_labels '"1:\n"'
3909
3910 if enabled alpha; then
3911
3912     check_cflags -mieee
3913
3914 elif enabled arm; then
3915
3916     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3917 float func(float a, float b){ return a+b; }
3918 EOF
3919
3920     enabled thumb && check_cflags -mthumb || check_cflags -marm
3921     nogas=die
3922
3923     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3924         enable vfp_args
3925     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3926         case "${cross_prefix:-$cc}" in
3927             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3928             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3929 __asm__ (".eabi_attribute 28, 1");
3930 int main(void) { return 0; }
3931 EOF
3932         esac
3933         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3934     fi
3935
3936     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3937     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3938     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3939     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3940     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3941     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3942
3943     [ $target_os = linux ] ||
3944         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3945             $ARCH_EXT_LIST_ARM
3946
3947     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3948     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3949
3950     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3951
3952 elif enabled mips; then
3953
3954     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3955     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3956      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3957     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3958      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3959     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3960      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3961     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3962      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3963
3964 elif enabled parisc; then
3965
3966     if enabled gcc; then
3967         case $($cc -dumpversion) in
3968             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3969         esac
3970     fi
3971
3972 elif enabled ppc; then
3973
3974     enable local_aligned_8 local_aligned_16
3975
3976     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3977     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3978     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3979     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3980
3981     # AltiVec flags: The FSF version of GCC differs from the Apple version
3982     if enabled altivec; then
3983         if ! enabled_any pic ppc64; then
3984             nogas=warn
3985         fi
3986         check_cflags -maltivec -mabi=altivec &&
3987         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3988         check_cflags -faltivec
3989
3990         # check if our compiler supports Motorola AltiVec C API
3991         check_cc <<EOF || disable altivec
3992 $inc_altivec_h
3993 int main(void) {
3994     vector signed int v1 = (vector signed int) { 0 };
3995     vector signed int v2 = (vector signed int) { 1 };
3996     v1 = vec_add(v1, v2);
3997     return 0;
3998 }
3999 EOF
4000
4001         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4002     fi
4003
4004 elif enabled sparc; then
4005
4006     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4007
4008 elif enabled x86; then
4009
4010     check_builtin rdtsc    intrin.h   "__rdtsc()"
4011     check_builtin mm_empty mmintrin.h "_mm_empty()"
4012
4013     enable local_aligned_8 local_aligned_16
4014
4015     # check whether EBP is available on x86
4016     # As 'i' is stored on the stack, this program will crash
4017     # if the base pointer is used to access it because the
4018     # base pointer is cleared in the inline assembly code.
4019     check_exec_crash <<EOF && enable ebp_available
4020 volatile int i=0;
4021 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4022 return i;
4023 EOF
4024
4025     # check whether EBX is available on x86
4026     check_inline_asm ebx_available '""::"b"(0)' &&
4027         check_inline_asm ebx_available '"":::"%ebx"'
4028
4029     # check whether xmm clobbers are supported
4030     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4031
4032     # check whether binutils is new enough to compile SSSE3/MMXEXT
4033     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4034     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4035
4036     if ! disabled_any asm mmx yasm; then
4037         if check_cmd $yasmexe --version; then
4038             enabled x86_64 && yasm_extra="-m amd64"
4039             yasm_debug="-g dwarf2"
4040         elif check_cmd nasm -v; then
4041             yasmexe=nasm
4042             yasm_debug="-g -F dwarf"
4043             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4044         fi
4045
4046         YASMFLAGS="-f $objformat $yasm_extra"
4047         enabled pic               && append YASMFLAGS "-DPIC"
4048         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4049         case "$objformat" in
4050             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4051         esac
4052
4053         check_yasm "movbe ecx, [5]" && enable yasm ||
4054             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4055         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4056         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4057         check_yasm "CPU amdnop" && enable cpunop
4058     fi
4059
4060     case "$cpu" in
4061         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4062             disable fast_clz
4063         ;;
4064     esac
4065
4066 fi
4067
4068 if enabled asm; then
4069     as=${gas:=$as}
4070     check_as <<EOF && enable gnu_as || \
4071         $nogas "GNU assembler not found, install gas-preprocessor"
4072 .macro m n
4073 \n: .int 0
4074 .endm
4075 m x
4076 EOF
4077 fi
4078
4079 check_ldflags -Wl,--as-needed
4080
4081 if check_func dlopen; then
4082     ldl=
4083 elif check_func dlopen -ldl; then
4084     ldl=-ldl
4085 fi
4086
4087 if ! disabled network; then
4088     check_type "sys/types.h sys/socket.h" socklen_t
4089     check_type netdb.h "struct addrinfo"
4090     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4091     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4092     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4093     check_type netinet/in.h "struct sockaddr_in6"
4094     check_type poll.h "struct pollfd"
4095     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4096     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4097     check_type netinet/sctp.h "struct sctp_event_subscribe"
4098     check_func getaddrinfo $network_extralibs
4099     check_func getservbyport $network_extralibs
4100     # Prefer arpa/inet.h over winsock2
4101     if check_header arpa/inet.h ; then
4102         check_func closesocket
4103     elif check_header winsock2.h ; then
4104         check_func_headers winsock2.h closesocket -lws2 &&
4105             network_extralibs="-lws2" ||
4106         { check_func_headers winsock2.h closesocket -lws2_32 &&
4107             network_extralibs="-lws2_32"; }
4108         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4109         check_type ws2tcpip.h socklen_t
4110         check_type ws2tcpip.h "struct addrinfo"
4111         check_type ws2tcpip.h "struct group_source_req"
4112         check_type ws2tcpip.h "struct ip_mreq_source"
4113         check_type ws2tcpip.h "struct ipv6_mreq"
4114         check_type winsock2.h "struct pollfd"
4115         check_type ws2tcpip.h "struct sockaddr_in6"
4116         check_type ws2tcpip.h "struct sockaddr_storage"
4117         check_struct winsock2.h "struct sockaddr" sa_len
4118     else
4119         disable network
4120     fi
4121 fi
4122
4123 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4124 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4125
4126 check_func  access
4127 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4128 check_func  fcntl
4129 check_func  fork
4130 check_func_headers stdlib.h getenv
4131 check_func  gethrtime
4132 check_func  getopt
4133 check_func  getrusage
4134 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4135 check_func  gettimeofday
4136 check_func  inet_aton $network_extralibs
4137 check_func  isatty
4138 check_func  localtime_r
4139 check_func  ${malloc_prefix}memalign            && enable memalign
4140 check_func  mkstemp
4141 check_func  mmap
4142 check_func  mprotect
4143 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4144 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4145 check_func  setrlimit
4146 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4147 check_func  strerror_r
4148 check_func  sched_getaffinity
4149 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4150 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4151 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4152 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4153 check_builtin sarestart signal.h "SA_RESTART"
4154 check_func  sysconf
4155 check_func  sysctl
4156 check_func  usleep
4157 check_func_headers conio.h kbhit
4158 check_func_headers windows.h PeekNamedPipe
4159 check_func_headers io.h setmode
4160 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4161 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4162 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4163 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4164 check_func_headers windows.h GetProcessAffinityMask
4165 check_func_headers windows.h GetProcessTimes
4166 check_func_headers windows.h GetSystemTimeAsFileTime
4167 check_func_headers windows.h MapViewOfFile
4168 check_func_headers windows.h SetConsoleTextAttribute
4169 check_func_headers windows.h Sleep
4170 check_func_headers windows.h VirtualAlloc
4171 check_func_headers glob.h glob
4172 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4173
4174 check_header cl/cl.h
4175 check_header direct.h
4176 check_header dlfcn.h
4177 check_header dxva.h
4178 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4179 check_header io.h
4180 check_header libcrystalhd/libcrystalhd_if.h
4181 check_header malloc.h
4182 check_header poll.h
4183 check_header sys/mman.h
4184 check_header sys/param.h
4185 check_header sys/resource.h
4186 check_header sys/select.h
4187 check_header sys/time.h
4188 check_header sys/un.h
4189 check_header termios.h
4190 check_header unistd.h
4191 check_header vdpau/vdpau.h
4192 check_header vdpau/vdpau_x11.h
4193 check_header VideoDecodeAcceleration/VDADecoder.h
4194 check_header windows.h
4195 check_header X11/extensions/XvMClib.h
4196 check_header asm/types.h
4197
4198 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4199 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4200
4201 if ! disabled w32threads && ! enabled pthreads; then
4202     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4203 fi
4204
4205 # check for some common methods of building with pthread support
4206 # do this before the optional library checks as some of them require pthreads
4207 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4208     enable pthreads
4209     if check_func pthread_create; then
4210         :
4211     elif check_func pthread_create -pthread; then
4212         add_cflags -pthread
4213         add_extralibs -pthread
4214     elif check_func pthread_create -pthreads; then
4215         add_cflags -pthreads
4216         add_extralibs -pthreads
4217     elif check_func pthread_create -lpthreadGC2; then
4218         add_extralibs -lpthreadGC2
4219     elif ! check_lib pthread.h pthread_create -lpthread; then
4220         disable pthreads
4221     fi
4222 fi
4223
4224 for thread in $THREADS_LIST; do
4225     if enabled $thread; then
4226         test -n "$thread_type" &&
4227             die "ERROR: Only one thread type must be selected." ||
4228             thread_type="$thread"
4229     fi
4230 done
4231
4232 if enabled pthreads; then
4233   check_func pthread_cancel
4234 fi
4235
4236 enabled sync_val_compare_and_swap && enable atomics_gcc
4237 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4238 enabled MemoryBarrier && enable atomics_win32
4239
4240 check_lib math.h sin -lm && LIBM="-lm"
4241 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4242
4243 atan2f_args=2
4244 ldexpf_args=2
4245 powf_args=2
4246
4247 for func in $MATH_FUNCS; do
4248     eval check_mathfunc $func \${${func}_args:-1}
4249 done
4250
4251 # these are off by default, so fail if requested and not available
4252 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4253                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4254                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4255 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4256 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4257 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4258 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4259 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4260 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4261 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4262 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4263 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4264                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4265                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4266 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4267 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4268 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4269 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"
4270 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4271 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4272 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4273 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4274                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4275                                done || die "ERROR: libgsm not found"; }
4276 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4277 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4278 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4279 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4280 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4281 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4282 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4283 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4284                                check_lib openjpeg.h opj_version -lopenjpeg ||
4285                                die "ERROR: libopenjpeg not found"; }
4286 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4287 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4288 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4289 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4290 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4291 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4292 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4293 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4294 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4295 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4296     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4297     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4298 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4299 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4300                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4301                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4302 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4303 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4304 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4305 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4306 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4307 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4308 enabled libvpx            && {
4309     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4310                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4311     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 ||
4312                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4313     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4314     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4315 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4316 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4317                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4318                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4319 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4320 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4321 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4322 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4323 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4324                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4325                                die "ERROR: openal not found"; } &&
4326                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4327                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4328 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4329                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4330                                die "ERROR: opencl not found"; } &&
4331                              { ! enabled_any w32threads os2threads ||
4332                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4333                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4334                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4335                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4336 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4337                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4338                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4339                                die "ERROR: openssl not found"; }
4340
4341 if enabled gnutls; then
4342     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4343     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4344 fi
4345
4346 # libdc1394 check
4347 if enabled libdc1394; then
4348     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4349         enable libdc1394_2; } ||
4350     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4351         enable libdc1394_1; } ||
4352     die "ERROR: No version of libdc1394 found "
4353 fi
4354
4355 SDL_CONFIG="${cross_prefix}sdl-config"
4356 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4357     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4358     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4359     enable sdl
4360 else
4361   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4362     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4363     sdl_libs=$("${SDL_CONFIG}" --libs)
4364     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4365     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4366     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4367     enable sdl
4368   fi
4369 fi
4370 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4371
4372 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4373 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4374 perl --version > /dev/null 2>&1 && enable perl || disable perl
4375 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4376 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4377
4378 check_header linux/fb.h
4379 check_header linux/videodev.h
4380 check_header linux/videodev2.h
4381 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4382
4383 check_header sys/videoio.h
4384
4385 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4386 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4387 # w32api 3.12 had it defined wrong
4388 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4389
4390 check_type "dshow.h" IBaseFilter
4391
4392 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4393 { check_header dev/bktr/ioctl_meteor.h &&
4394   check_header dev/bktr/ioctl_bt848.h; } ||
4395 { check_header machine/ioctl_meteor.h &&
4396   check_header machine/ioctl_bt848.h; } ||
4397 { check_header dev/video/meteor/ioctl_meteor.h &&
4398   check_header dev/video/bktr/ioctl_bt848.h; } ||
4399 check_header dev/ic/bt8xx.h
4400
4401 check_header sndio.h
4402 if check_struct sys/soundcard.h audio_buf_info bytes; then
4403     enable_safe sys/soundcard.h
4404 else
4405     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4406     #include <sys/soundcard.h>
4407     audio_buf_info abc;
4408 EOF
4409 fi
4410 check_header soundcard.h
4411
4412 enabled_any alsa_indev alsa_outdev &&
4413     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4414
4415 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4416     check_func jack_port_get_latency_range -ljack
4417
4418 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4419
4420 if enabled libcdio; then
4421     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4422     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4423     die "ERROR: libcdio-paranoia not found"
4424 fi
4425
4426 enabled x11grab                                           &&
4427 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4428 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4429 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4430
4431 enabled vaapi &&
4432     check_lib va/va.h vaInitialize -lva ||
4433     disable vaapi
4434
4435 enabled vdpau &&
4436     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4437     disable vdpau
4438
4439 # Funny iconv installations are not unusual, so check it after all flags have been set
4440 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4441
4442 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4443
4444 # add some useful compiler flags if supported
4445 check_cflags -Wdeclaration-after-statement
4446 check_cflags -Wall
4447 check_cflags -Wdisabled-optimization
4448 check_cflags -Wpointer-arith
4449 check_cflags -Wredundant-decls
4450 check_cflags -Wwrite-strings
4451 check_cflags -Wtype-limits
4452 check_cflags -Wundef
4453 check_cflags -Wmissing-prototypes
4454 check_cflags -Wno-pointer-to-int-cast
4455 check_cflags -Wstrict-prototypes
4456 enabled extra_warnings && check_cflags -Winline
4457
4458 check_disable_warning(){
4459     warning_flag=-W${1#-Wno-}
4460     test_cflags $warning_flag && add_cflags $1
4461 }
4462
4463 check_disable_warning -Wno-parentheses
4464 check_disable_warning -Wno-switch
4465 check_disable_warning -Wno-format-zero-length
4466 check_disable_warning -Wno-pointer-sign
4467
4468 # add some linker flags
4469 check_ldflags -Wl,--warn-common
4470 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4471 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4472
4473 enabled xmm_clobber_test &&
4474     check_ldflags -Wl,--wrap,avcodec_open2              \
4475                   -Wl,--wrap,avcodec_decode_audio4      \
4476                   -Wl,--wrap,avcodec_decode_video2      \
4477                   -Wl,--wrap,avcodec_decode_subtitle2   \
4478                   -Wl,--wrap,avcodec_encode_audio2      \
4479                   -Wl,--wrap,avcodec_encode_video       \
4480                   -Wl,--wrap,avcodec_encode_video2      \
4481                   -Wl,--wrap,avcodec_encode_subtitle    \
4482                   -Wl,--wrap,sws_scale ||
4483     disable xmm_clobber_test
4484
4485 echo "X{};" > $TMPV
4486 if test_ldflags -Wl,--version-script,$TMPV; then
4487     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4488     check_cc <<EOF && enable symver_asm_label
4489 void ff_foo(void) __asm__ ("av_foo@VERSION");
4490 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4491 EOF
4492     check_cc <<EOF && enable symver_gnu_asm
4493 __asm__(".symver ff_foo,av_foo@VERSION");
4494 void ff_foo(void) {}
4495 EOF
4496 fi
4497
4498 if [ -z "$optflags" ]; then
4499     if enabled small; then
4500         optflags=$cflags_size
4501     elif enabled optimizations; then
4502         optflags=$cflags_speed
4503     else
4504         optflags=$cflags_noopt
4505     fi
4506 fi
4507
4508 check_optflags(){
4509     check_cflags "$@"
4510     enabled lto && check_ldflags "$@"
4511 }
4512
4513
4514 if enabled lto; then
4515     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4516     check_cflags  -flto
4517     check_ldflags -flto $cpuflags
4518 fi
4519
4520 check_optflags $optflags
4521 check_optflags -fno-math-errno
4522 check_optflags -fno-signed-zeros
4523
4524 enabled ftrapv && check_cflags -ftrapv
4525
4526 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4527 int x;
4528 EOF
4529
4530
4531 if enabled icc; then
4532     # Just warnings, no remarks
4533     check_cflags -w1
4534     # -wd: Disable following warnings
4535     # 144, 167, 556: -Wno-pointer-sign
4536     # 188: enumerated type mixed with another type
4537     # 1292: attribute "foo" ignored
4538     # 1419: external declaration in primary source file
4539     # 10006: ignoring unknown option -fno-signed-zeros
4540     # 10148: ignoring unknown option -Wno-parentheses
4541     # 10156: ignoring option '-W'; no argument required
4542     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4543     # 11030: Warning unknown option --as-needed
4544     # 10156: ignoring option '-export'; no argument required
4545     check_ldflags -wd10156,11030
4546     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4547     enable ebp_available
4548     if enabled x86_32; then
4549         icc_version=$($cc -dumpversion)
4550         test ${icc_version%%.*} -ge 11 &&
4551             check_cflags -falign-stack=maintain-16-byte ||
4552             disable aligned_stack
4553     fi
4554 elif enabled ccc; then
4555     # disable some annoying warnings
4556     add_cflags -msg_disable bitnotint
4557     add_cflags -msg_disable mixfuncvoid
4558     add_cflags -msg_disable nonstandcast
4559     add_cflags -msg_disable unsupieee
4560 elif enabled gcc; then
4561     check_optflags -fno-tree-vectorize
4562     check_cflags -Werror=implicit-function-declaration
4563     check_cflags -Werror=missing-prototypes
4564     check_cflags -Werror=return-type
4565     check_cflags -Werror=vla
4566     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4567 elif enabled llvm_gcc; then
4568     check_cflags -mllvm -stack-alignment=16
4569 elif enabled clang; then
4570     check_cflags -mllvm -stack-alignment=16
4571     check_cflags -Qunused-arguments
4572     check_cflags -Werror=implicit-function-declaration
4573     check_cflags -Werror=missing-prototypes
4574     check_cflags -Werror=return-type
4575 elif enabled cparser; then
4576     add_cflags -Wno-missing-variable-declarations
4577     add_cflags -Wno-empty-statement
4578 elif enabled armcc; then
4579     # 2523: use of inline assembler is deprecated
4580     add_cflags -W${armcc_opt},--diag_suppress=2523
4581     add_cflags -W${armcc_opt},--diag_suppress=1207
4582     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4583     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4584     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4585     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4586 elif enabled tms470; then
4587     add_cflags -pds=824 -pds=837
4588 elif enabled pathscale; then
4589     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4590 elif enabled_any msvc icl; then
4591     enabled x86_32 && disable aligned_stack
4592     enabled_all x86_32 debug && add_cflags -Oy-
4593     enabled debug && add_ldflags -debug
4594     enable pragma_deprecated
4595     if enabled icl; then
4596         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4597         # (correctly) on icl 13.x.
4598         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4599             add_cflags -Qansi-alias
4600         # icl will pass the inline asm tests but inline asm is currently
4601         # not supported (build will fail)
4602         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4603         disable inline_asm
4604     fi
4605 fi
4606
4607 case $target_os in
4608     osf1)
4609         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4610     ;;
4611     plan9)
4612         add_cppflags -Dmain=plan9_main
4613     ;;
4614 esac
4615
4616 enable frame_thread_encoder
4617 enabled_any $THREADS_LIST      && enable threads
4618 enabled_any $ATOMICS_LIST      && enable atomics_native
4619
4620 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"
4621
4622 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4623
4624 check_deps $CONFIG_LIST       \
4625            $CONFIG_EXTRA      \
4626            $HAVE_LIST         \
4627            $ALL_COMPONENTS    \
4628
4629
4630 if test $target_os = "haiku"; then
4631     disable memalign
4632     disable posix_memalign
4633 fi
4634
4635 ! enabled_any memalign posix_memalign aligned_malloc &&
4636     enabled_any $need_memalign && enable memalign_hack
4637
4638 # add_dep lib dep
4639 # -> enable ${lib}_deps_${dep}
4640 # -> add $dep to ${lib}_deps only once
4641 add_dep() {
4642     lib=$1
4643     dep=$2
4644     enabled "${lib}_deps_${dep}" && return 0
4645     enable  "${lib}_deps_${dep}"
4646     prepend "${lib}_deps" $dep
4647 }
4648
4649 # merge deps lib components
4650 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4651 merge_deps() {
4652     lib=$1
4653     shift
4654     for comp in $*; do
4655         enabled $comp || continue
4656         eval "dep=\"\$${comp}_deps\""
4657         for d in $dep; do
4658             add_dep $lib $d
4659         done
4660     done
4661 }
4662
4663 merge_deps libavfilter $FILTER_LIST
4664
4665 echo "install prefix            $prefix"
4666 echo "source path               $source_path"
4667 echo "C compiler                $cc"
4668 echo "ARCH                      $arch ($cpu)"
4669 if test "$build_suffix" != ""; then
4670     echo "build suffix              $build_suffix"
4671 fi
4672 if test "$progs_suffix" != ""; then
4673     echo "progs suffix              $progs_suffix"
4674 fi
4675 if test "$extra_version" != ""; then
4676     echo "version string suffix     $extra_version"
4677 fi
4678 echo "big-endian                ${bigendian-no}"
4679 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4680 if enabled x86; then
4681     echo "${yasmexe}                      ${yasm-no}"
4682     echo "MMX enabled               ${mmx-no}"
4683     echo "MMXEXT enabled            ${mmxext-no}"
4684     echo "3DNow! enabled            ${amd3dnow-no}"
4685     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4686     echo "SSE enabled               ${sse-no}"
4687     echo "SSSE3 enabled             ${ssse3-no}"
4688     echo "AVX enabled               ${avx-no}"
4689     echo "FMA4 enabled              ${fma4-no}"
4690     echo "i686 features enabled     ${i686-no}"
4691     echo "CMOV is fast              ${fast_cmov-no}"
4692     echo "EBX available             ${ebx_available-no}"
4693     echo "EBP available             ${ebp_available-no}"
4694 fi
4695 if enabled arm; then
4696     echo "ARMv5TE enabled           ${armv5te-no}"
4697     echo "ARMv6 enabled             ${armv6-no}"
4698     echo "ARMv6T2 enabled           ${armv6t2-no}"
4699     echo "VFP enabled               ${vfp-no}"
4700     echo "NEON enabled              ${neon-no}"
4701     echo "THUMB enabled             ${thumb-no}"
4702 fi
4703 if enabled mips; then
4704     echo "MIPS FPU enabled          ${mipsfpu-no}"
4705     echo "MIPS32R2 enabled          ${mips32r2-no}"
4706     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4707     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4708 fi
4709 if enabled ppc; then
4710     echo "AltiVec enabled           ${altivec-no}"
4711     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4712     echo "dcbzl available           ${dcbzl-no}"
4713 fi
4714 if enabled sparc; then
4715     echo "VIS enabled               ${vis-no}"
4716 fi
4717 echo "debug symbols             ${debug-no}"
4718 echo "strip symbols             ${stripping-no}"
4719 echo "optimize for size         ${small-no}"
4720 echo "optimizations             ${optimizations-no}"
4721 echo "static                    ${static-no}"
4722 echo "shared                    ${shared-no}"
4723 echo "postprocessing support    ${postproc-no}"
4724 echo "new filter support        ${avfilter-no}"
4725 echo "network support           ${network-no}"
4726 echo "threading support         ${thread_type-no}"
4727 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4728 echo "SDL support               ${sdl-no}"
4729 echo "opencl enabled            ${opencl-no}"
4730 echo "libzvbi enabled           ${libzvbi-no}"
4731 echo "texi2html enabled         ${texi2html-no}"
4732 echo "perl enabled              ${perl-no}"
4733 echo "pod2man enabled           ${pod2man-no}"
4734 echo "makeinfo enabled          ${makeinfo-no}"
4735 test -n "$random_seed" &&
4736     echo "random seed               ${random_seed}"
4737 echo
4738
4739 echo "External libraries:"
4740 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4741 echo
4742
4743 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4744     echo "Enabled ${type}s:"
4745     eval list=\$$(toupper $type)_LIST
4746     print_enabled '_*' $list | print_3_columns
4747     echo
4748 done
4749
4750 license="LGPL version 2.1 or later"
4751 if enabled nonfree; then
4752     license="nonfree and unredistributable"
4753 elif enabled gplv3; then
4754     license="GPL version 3 or later"
4755 elif enabled lgplv3; then
4756     license="LGPL version 3 or later"
4757 elif enabled gpl; then
4758     license="GPL version 2 or later"
4759 fi
4760
4761 echo "License: $license"
4762
4763 echo "Creating config.mak, config.h, and doc/config.texi..."
4764
4765 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4766
4767 enabled stripping || strip="echo skipping strip"
4768
4769 config_files="$TMPH config.mak doc/config.texi"
4770
4771 cat > config.mak <<EOF
4772 # Automatically generated by configure - do not modify!
4773 ifndef FFMPEG_CONFIG_MAK
4774 FFMPEG_CONFIG_MAK=1
4775 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4776 prefix=$prefix
4777 LIBDIR=\$(DESTDIR)$libdir
4778 SHLIBDIR=\$(DESTDIR)$shlibdir
4779 INCDIR=\$(DESTDIR)$incdir
4780 BINDIR=\$(DESTDIR)$bindir
4781 DATADIR=\$(DESTDIR)$datadir
4782 DOCDIR=\$(DESTDIR)$docdir
4783 MANDIR=\$(DESTDIR)$mandir
4784 SRC_PATH=$source_path
4785 ifndef MAIN_MAKEFILE
4786 SRC_PATH:=\$(SRC_PATH:.%=..%)
4787 endif
4788 CC_IDENT=$cc_ident
4789 ARCH=$arch
4790 CC=$cc
4791 CXX=$cxx
4792 AS=$as
4793 LD=$ld
4794 DEPCC=$dep_cc
4795 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4796 DEPAS=$as
4797 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4798 YASM=$yasmexe
4799 DEPYASM=$yasmexe
4800 AR=$ar
4801 ARFLAGS=$arflags
4802 AR_O=$ar_o
4803 RANLIB=$ranlib
4804 STRIP=$strip
4805 CP=cp -p
4806 LN_S=$ln_s
4807 CPPFLAGS=$CPPFLAGS
4808 CFLAGS=$CFLAGS
4809 CXXFLAGS=$CXXFLAGS
4810 ASFLAGS=$ASFLAGS
4811 AS_C=$AS_C
4812 AS_O=$AS_O
4813 CC_C=$CC_C
4814 CC_E=$CC_E
4815 CC_O=$CC_O
4816 CXX_C=$CXX_C
4817 CXX_O=$CXX_O
4818 LD_O=$LD_O
4819 LD_LIB=$LD_LIB
4820 LD_PATH=$LD_PATH
4821 DLLTOOL=$dlltool
4822 LDFLAGS=$LDFLAGS
4823 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4824 YASMFLAGS=$YASMFLAGS
4825 BUILDSUF=$build_suffix
4826 PROGSSUF=$progs_suffix
4827 FULLNAME=$FULLNAME
4828 LIBPREF=$LIBPREF
4829 LIBSUF=$LIBSUF
4830 LIBNAME=$LIBNAME
4831 SLIBPREF=$SLIBPREF
4832 SLIBSUF=$SLIBSUF
4833 EXESUF=$EXESUF
4834 EXTRA_VERSION=$extra_version
4835 CCDEP=$CCDEP
4836 CXXDEP=$CXXDEP
4837 CCDEP_FLAGS=$CCDEP_FLAGS
4838 ASDEP=$ASDEP
4839 ASDEP_FLAGS=$ASDEP_FLAGS
4840 CC_DEPFLAGS=$CC_DEPFLAGS
4841 AS_DEPFLAGS=$AS_DEPFLAGS
4842 HOSTCC=$host_cc
4843 HOSTLD=$host_ld
4844 HOSTCFLAGS=$host_cflags
4845 HOSTCPPFLAGS=$host_cppflags
4846 HOSTEXESUF=$HOSTEXESUF
4847 HOSTLDFLAGS=$host_ldflags
4848 HOSTLIBS=$host_libs
4849 DEPHOSTCC=$host_cc
4850 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4851 HOSTCCDEP=$HOSTCCDEP
4852 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4853 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4854 HOSTCC_C=$HOSTCC_C
4855 HOSTCC_O=$HOSTCC_O
4856 HOSTLD_O=$HOSTLD_O
4857 TARGET_EXEC=$target_exec $target_exec_args
4858 TARGET_PATH=$target_path
4859 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4860 LIBS-ffplay=$sdl_libs
4861 CFLAGS-ffplay=$sdl_cflags
4862 ZLIB=$($ldflags_filter -lz)
4863 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4864 EXTRALIBS=$extralibs
4865 COMPAT_OBJS=$compat_objs
4866 EXEOBJS=$exeobjs
4867 INSTALL=$install
4868 LIBTARGET=${LIBTARGET}
4869 SLIBNAME=${SLIBNAME}
4870 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4871 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4872 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4873 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4874 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4875 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4876 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4877 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4878 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4879 NOREDZONE_FLAGS=$noredzone_flags
4880 EOF
4881
4882 get_version(){
4883     lcname=lib${1}
4884     name=$(toupper $lcname)
4885     file=$source_path/$lcname/version.h
4886     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4887     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4888     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4889     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4890     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4891 }
4892
4893 map 'get_version $v' $LIBRARY_LIST
4894
4895 cat > $TMPH <<EOF
4896 /* Automatically generated by configure - do not modify! */
4897 #ifndef FFMPEG_CONFIG_H
4898 #define FFMPEG_CONFIG_H
4899 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4900 #define FFMPEG_LICENSE "$(c_escape $license)"
4901 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4902 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4903 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4904 #define av_restrict $_restrict
4905 #define EXTERN_PREFIX "${extern_prefix}"
4906 #define EXTERN_ASM ${extern_prefix}
4907 #define SLIBSUF "$SLIBSUF"
4908 #define HAVE_MMX2 HAVE_MMXEXT
4909 EOF
4910
4911 test -n "$assert_level" &&
4912     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4913
4914 test -n "$malloc_prefix" &&
4915     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4916
4917 if enabled yasm; then
4918     append config_files $TMPASM
4919     printf '' >$TMPASM
4920 fi
4921
4922 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4923
4924
4925 mkdir -p doc
4926 echo "@c auto-generated by configure" > doc/config.texi
4927
4928 print_config ARCH_   "$config_files" $ARCH_LIST
4929 print_config HAVE_   "$config_files" $HAVE_LIST
4930 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4931                                      $CONFIG_EXTRA      \
4932                                      $ALL_COMPONENTS    \
4933
4934 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4935 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4936
4937 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4938 cp_if_changed $TMPH config.h
4939 touch .config
4940
4941 enabled yasm && cp_if_changed $TMPASM config.asm
4942
4943 cat > $TMPH <<EOF
4944 /* Generated by ffconf */
4945 #ifndef AVUTIL_AVCONFIG_H
4946 #define AVUTIL_AVCONFIG_H
4947 EOF
4948
4949 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4950
4951 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4952
4953 cp_if_changed $TMPH libavutil/avconfig.h
4954
4955 if test -n "$WARNINGS"; then
4956     printf "\n$WARNINGS"
4957     enabled fatal_warnings && exit 1
4958 fi
4959
4960 # build pkg-config files
4961
4962 pkgconfig_generate(){
4963     name=$1
4964     shortname=${name#lib}${build_suffix}
4965     comment=$2
4966     version=$3
4967     libs=$4
4968     requires=$5
4969     enabled ${name#lib} || return 0
4970     mkdir -p $name
4971     cat <<EOF > $name/$name${build_suffix}.pc
4972 prefix=$prefix
4973 exec_prefix=\${prefix}
4974 libdir=$libdir
4975 includedir=$incdir
4976
4977 Name: $name
4978 Description: $comment
4979 Version: $version
4980 Requires: $(enabled shared || echo $requires)
4981 Requires.private: $(enabled shared && echo $requires)
4982 Conflicts:
4983 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4984 Libs.private: $(enabled shared && echo $libs)
4985 Cflags: -I\${includedir}
4986 EOF
4987
4988 mkdir -p doc/examples/pc-uninstalled
4989 includedir=${source_path}
4990 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4991     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4992 prefix=
4993 exec_prefix=
4994 libdir=\${pcfiledir}/../../../$name
4995 includedir=${includedir}
4996
4997 Name: $name
4998 Description: $comment
4999 Version: $version
5000 Requires: $requires
5001 Conflicts:
5002 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5003 Cflags: -I\${includedir}
5004 EOF
5005 }
5006
5007 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5008 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5009 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5010 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5011 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5012 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5013 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5014 lavfi_libs=${lavfi_libs%, }
5015
5016 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5017 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5018
5019 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5020 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5021 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5022 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5023 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5024 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5025 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5026 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5027 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5028
5029 fix_ffmpeg_remote(){
5030     git_remote_from=$1
5031     git_remote_to=$2
5032     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5033     if [ "$fixme_remote" != "" ]; then
5034         echolog "
5035 Outdated domain in git config, the official domain for ffmpeg git is since
5036 November 2011, source.ffmpeg.org, both the old and the new point to the same
5037 repository and server. To update it enter the following commands:
5038 "
5039         for remote in $fixme_remote; do
5040             echolog "git remote set-url $remote $git_remote_to"
5041         done
5042     fi
5043 }
5044
5045 if test -f "$source_path/.git/config"; then
5046     remote_from=git.videolan.org
5047     remote_to=source.ffmpeg.org
5048     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5049     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5050 fi