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 mpeg4video_parser_select="error_resilience mpegvideo"
2006 mpegvideo_parser_select="error_resilience mpegvideo"
2007 vc1_parser_select="mpegvideo"
2008
2009 # external libraries
2010 libaacplus_encoder_deps="libaacplus"
2011 libcelt_decoder_deps="libcelt"
2012 libfaac_encoder_deps="libfaac"
2013 libfaac_encoder_select="audio_frame_queue"
2014 libfdk_aac_decoder_deps="libfdk_aac"
2015 libfdk_aac_encoder_deps="libfdk_aac"
2016 libfdk_aac_encoder_select="audio_frame_queue"
2017 libgme_demuxer_deps="libgme"
2018 libgsm_decoder_deps="libgsm"
2019 libgsm_encoder_deps="libgsm"
2020 libgsm_ms_decoder_deps="libgsm"
2021 libgsm_ms_encoder_deps="libgsm"
2022 libilbc_decoder_deps="libilbc"
2023 libilbc_encoder_deps="libilbc"
2024 libmodplug_demuxer_deps="libmodplug"
2025 libmp3lame_encoder_deps="libmp3lame"
2026 libmp3lame_encoder_select="audio_frame_queue"
2027 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2028 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2029 libopencore_amrnb_encoder_select="audio_frame_queue"
2030 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2031 libopenjpeg_decoder_deps="libopenjpeg"
2032 libopenjpeg_encoder_deps="libopenjpeg"
2033 libopus_decoder_deps="libopus"
2034 libopus_encoder_deps="libopus"
2035 libopus_encoder_select="audio_frame_queue"
2036 libquvi_demuxer_deps="libquvi"
2037 libschroedinger_decoder_deps="libschroedinger"
2038 libschroedinger_encoder_deps="libschroedinger"
2039 libshine_encoder_deps="libshine"
2040 libshine_encoder_select="audio_frame_queue"
2041 libspeex_decoder_deps="libspeex"
2042 libspeex_encoder_deps="libspeex"
2043 libspeex_encoder_select="audio_frame_queue"
2044 libstagefright_h264_decoder_deps="libstagefright_h264"
2045 libtheora_encoder_deps="libtheora"
2046 libtwolame_encoder_deps="libtwolame"
2047 libvo_aacenc_encoder_deps="libvo_aacenc"
2048 libvo_aacenc_encoder_select="audio_frame_queue"
2049 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2050 libvorbis_decoder_deps="libvorbis"
2051 libvorbis_encoder_deps="libvorbis"
2052 libvorbis_encoder_select="audio_frame_queue"
2053 libvpx_vp8_decoder_deps="libvpx"
2054 libvpx_vp8_encoder_deps="libvpx"
2055 libvpx_vp9_decoder_deps="libvpx"
2056 libvpx_vp9_encoder_deps="libvpx"
2057 libwavpack_encoder_deps="libwavpack"
2058 libx264_encoder_deps="libx264"
2059 libx264rgb_encoder_deps="libx264"
2060 libxavs_encoder_deps="libxavs"
2061 libxvid_encoder_deps="libxvid"
2062 libutvideo_decoder_deps="libutvideo"
2063 libutvideo_encoder_deps="libutvideo"
2064 libzvbi_teletext_decoder_deps="libzvbi"
2065
2066 # demuxers / muxers
2067 ac3_demuxer_select="ac3_parser"
2068 asf_demuxer_select="riffdec"
2069 asf_muxer_select="riffenc"
2070 asf_stream_muxer_select="asf_muxer"
2071 avi_demuxer_select="riffdec"
2072 avi_muxer_select="riffenc"
2073 avisynth_demuxer_deps="avisynth"
2074 avisynth_demuxer_select="riffdec"
2075 caf_demuxer_select="riffdec"
2076 dirac_demuxer_select="dirac_parser"
2077 dts_demuxer_select="dca_parser"
2078 dtshd_demuxer_select="dca_parser"
2079 dxa_demuxer_select="riffdec"
2080 eac3_demuxer_select="ac3_parser"
2081 f4v_muxer_select="mov_muxer"
2082 flac_demuxer_select="flac_parser"
2083 hds_muxer_select="flv_muxer"
2084 hls_muxer_select="mpegts_muxer"
2085 ipod_muxer_select="mov_muxer"
2086 ismv_muxer_select="mov_muxer"
2087 libnut_demuxer_deps="libnut"
2088 libnut_muxer_deps="libnut"
2089 matroska_audio_muxer_select="matroska_muxer"
2090 matroska_demuxer_select="riffdec"
2091 matroska_demuxer_suggest="bzlib lzo zlib"
2092 matroska_muxer_select="riffenc"
2093 mmf_muxer_select="riffenc"
2094 mov_demuxer_select="riffdec"
2095 mov_demuxer_suggest="zlib"
2096 mov_muxer_select="riffenc rtpenc_chain"
2097 mp3_demuxer_select="mpegaudio_parser"
2098 mp4_muxer_select="mov_muxer"
2099 mpegts_muxer_select="adts_muxer latm_muxer"
2100 mpegtsraw_demuxer_select="mpegts_demuxer"
2101 mxf_d10_muxer_select="mxf_muxer"
2102 nut_muxer_select="riffenc"
2103 nuv_demuxer_select="riffdec"
2104 ogg_demuxer_select="golomb"
2105 psp_muxer_select="mov_muxer"
2106 rtp_demuxer_select="sdp_demuxer"
2107 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2108 rtsp_demuxer_select="http_protocol rtpdec"
2109 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2110 sap_demuxer_select="sdp_demuxer"
2111 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2112 sdp_demuxer_select="rtpdec"
2113 smoothstreaming_muxer_select="ismv_muxer"
2114 spdif_muxer_select="aac_parser"
2115 tak_demuxer_select="tak_parser"
2116 tg2_muxer_select="mov_muxer"
2117 tgp_muxer_select="mov_muxer"
2118 vobsub_demuxer_select="mpegps_demuxer"
2119 w64_demuxer_select="wav_demuxer"
2120 w64_muxer_select="wav_muxer"
2121 wav_demuxer_select="riffdec"
2122 wav_muxer_select="riffenc"
2123 webm_muxer_select="riffenc"
2124 wtv_demuxer_select="riffdec"
2125 xmv_demuxer_select="riffdec"
2126 xwma_demuxer_select="riffdec"
2127
2128 # indevs / outdevs
2129 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2130 alsa_outdev_deps="alsa_asoundlib_h"
2131 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2132 caca_outdev_deps="libcaca"
2133 dshow_indev_deps="IBaseFilter"
2134 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2135 dv1394_indev_deps="dv1394"
2136 dv1394_indev_select="dv_demuxer"
2137 fbdev_indev_deps="linux_fb_h"
2138 fbdev_outdev_deps="linux_fb_h"
2139 iec61883_indev_deps="libiec61883"
2140 jack_indev_deps="jack_jack_h sem_timedwait"
2141 lavfi_indev_deps="avfilter"
2142 libcdio_indev_deps="libcdio"
2143 libdc1394_indev_deps="libdc1394"
2144 libv4l2_indev_deps="libv4l2"
2145 openal_indev_deps="openal"
2146 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2147 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2148 pulse_indev_deps="libpulse"
2149 pulse_outdev_deps="libpulse"
2150 sdl_outdev_deps="sdl"
2151 sndio_indev_deps="sndio_h"
2152 sndio_outdev_deps="sndio_h"
2153 v4l_indev_deps="linux_videodev_h"
2154 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2155 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2156 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2157 vfwcap_indev_extralibs="-lavicap32"
2158 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2159 xv_outdev_extralibs="-lXv -lX11 -lXext"
2160 x11grab_indev_deps="x11grab"
2161
2162 # protocols
2163 bluray_protocol_deps="libbluray"
2164 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2165 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2166 ffrtmpcrypt_protocol_select="tcp_protocol"
2167 ffrtmphttp_protocol_deps="!librtmp_protocol"
2168 ffrtmphttp_protocol_select="http_protocol"
2169 ftp_protocol_select="tcp_protocol"
2170 gopher_protocol_select="network"
2171 httpproxy_protocol_select="tcp_protocol"
2172 http_protocol_select="tcp_protocol"
2173 https_protocol_select="tls_protocol"
2174 librtmp_protocol_deps="librtmp"
2175 librtmpe_protocol_deps="librtmp"
2176 librtmps_protocol_deps="librtmp"
2177 librtmpt_protocol_deps="librtmp"
2178 librtmpte_protocol_deps="librtmp"
2179 libssh_protocol_deps="libssh"
2180 mmsh_protocol_select="http_protocol"
2181 mmst_protocol_select="network"
2182 rtmp_protocol_deps="!librtmp_protocol"
2183 rtmp_protocol_select="tcp_protocol"
2184 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2185 rtmps_protocol_deps="!librtmp_protocol"
2186 rtmps_protocol_select="tls_protocol"
2187 rtmpt_protocol_select="ffrtmphttp_protocol"
2188 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2189 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2190 rtp_protocol_select="udp_protocol"
2191 sctp_protocol_deps="struct_sctp_event_subscribe"
2192 sctp_protocol_select="network"
2193 srtp_protocol_select="rtp_protocol"
2194 tcp_protocol_select="network"
2195 tls_protocol_deps_any="openssl gnutls"
2196 tls_protocol_select="tcp_protocol"
2197 udp_protocol_select="network"
2198 unix_protocol_deps="sys_un_h"
2199 unix_protocol_select="network"
2200
2201 # filters
2202 aconvert_filter_deps="swresample"
2203 amovie_filter_deps="avcodec avformat"
2204 aresample_filter_deps="swresample"
2205 ass_filter_deps="libass"
2206 asyncts_filter_deps="avresample"
2207 atempo_filter_deps="avcodec"
2208 atempo_filter_select="rdft"
2209 azmq_filter_deps="libzmq"
2210 blackframe_filter_deps="gpl"
2211 boxblur_filter_deps="gpl"
2212 colormatrix_filter_deps="gpl"
2213 cropdetect_filter_deps="gpl"
2214 dctdnoiz_filter_deps="avcodec"
2215 dctdnoiz_filter_select="fft"
2216 delogo_filter_deps="gpl"
2217 deshake_filter_deps="avcodec"
2218 deshake_filter_select="dsputil"
2219 drawtext_filter_deps="libfreetype"
2220 ebur128_filter_deps="gpl"
2221 flite_filter_deps="libflite"
2222 frei0r_filter_deps="frei0r dlopen"
2223 frei0r_filter_extralibs='$ldl'
2224 frei0r_src_filter_deps="frei0r dlopen"
2225 frei0r_src_filter_extralibs='$ldl'
2226 geq_filter_deps="gpl"
2227 histeq_filter_deps="gpl"
2228 hqdn3d_filter_deps="gpl"
2229 interlace_filter_deps="gpl"
2230 kerndeint_filter_deps="gpl"
2231 ladspa_filter_deps="ladspa dlopen"
2232 mcdeint_filter_deps="avcodec gpl"
2233 movie_filter_deps="avcodec avformat"
2234 mp_filter_deps="gpl avcodec swscale inline_asm"
2235 mpdecimate_filter_deps="gpl avcodec"
2236 mptestsrc_filter_deps="gpl"
2237 negate_filter_deps="lut_filter"
2238 perspective_filter_deps="gpl"
2239 resample_filter_deps="avresample"
2240 ocv_filter_deps="libopencv"
2241 owdenoise_filter_deps="gpl"
2242 pan_filter_deps="swresample"
2243 phase_filter_deps="gpl"
2244 pp_filter_deps="gpl postproc"
2245 pullup_filter_deps="gpl"
2246 removelogo_filter_deps="avcodec avformat swscale"
2247 sab_filter_deps="gpl swscale"
2248 scale_filter_deps="swscale"
2249 smartblur_filter_deps="gpl swscale"
2250 showspectrum_filter_deps="avcodec"
2251 showspectrum_filter_select="rdft"
2252 spp_filter_deps="gpl avcodec"
2253 spp_filter_select="fft"
2254 stereo3d_filter_deps="gpl"
2255 subtitles_filter_deps="avformat avcodec libass"
2256 super2xsai_filter_deps="gpl"
2257 tinterlace_filter_deps="gpl"
2258 vidstabdetect_filter_deps="libvidstab"
2259 vidstabtransform_filter_deps="libvidstab"
2260 yadif_filter_deps="gpl"
2261 pixfmts_super2xsai_test_deps="super2xsai_filter"
2262 tinterlace_merge_test_deps="tinterlace_filter"
2263 tinterlace_pad_test_deps="tinterlace_filter"
2264 zmq_filter_deps="libzmq"
2265
2266 # libraries
2267 avcodec_deps="avutil"
2268 avdevice_deps="avutil avcodec avformat"
2269 avfilter_deps="avutil"
2270 avformat_deps="avutil avcodec"
2271 avresample_deps="avutil"
2272 postproc_deps="avutil gpl"
2273 swscale_deps="avutil"
2274
2275 # programs
2276 ffmpeg_deps="avcodec avfilter avformat swresample"
2277 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2278                null_filter
2279                setpts_filter trim_filter"
2280 ffplay_deps="avcodec avformat swscale swresample sdl"
2281 ffplay_select="rdft crop_filter"
2282 ffprobe_deps="avcodec avformat"
2283 ffserver_deps="avformat fork sarestart"
2284 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2285 ffserver_extralibs='$ldl'
2286
2287 # documentation
2288 podpages_deps="perl"
2289 manpages_deps="perl pod2man"
2290 htmlpages_deps="texi2html"
2291 txtpages_deps="makeinfo"
2292 doc_deps_any="manpages htmlpages podpages txtpages"
2293
2294 # default parameters
2295
2296 logfile="config.log"
2297
2298 # installation paths
2299 prefix_default="/usr/local"
2300 bindir_default='${prefix}/bin'
2301 datadir_default='${prefix}/share/ffmpeg'
2302 docdir_default='${prefix}/share/doc/ffmpeg'
2303 incdir_default='${prefix}/include'
2304 libdir_default='${prefix}/lib'
2305 mandir_default='${prefix}/share/man'
2306 shlibdir_default="$libdir_default"
2307
2308 # toolchain
2309 ar_default="ar"
2310 cc_default="gcc"
2311 cxx_default="g++"
2312 host_cc_default="gcc"
2313 cp_f="cp -f"
2314 install="install"
2315 ln_s="ln -s -f"
2316 nm_default="nm -g"
2317 objformat="elf"
2318 pkg_config_default=pkg-config
2319 ranlib="ranlib"
2320 strip_default="strip"
2321 yasmexe_default="yasm"
2322
2323 nogas=":"
2324
2325 # machine
2326 arch_default=$(uname -m)
2327 cpu="generic"
2328
2329 # OS
2330 target_os_default=$(tolower $(uname -s))
2331 host_os=$target_os_default
2332
2333 # configurable options
2334 enable $PROGRAM_LIST
2335 enable $DOCUMENT_LIST
2336 enable $(filter_out avresample $LIBRARY_LIST)
2337 enable stripping
2338
2339 enable asm
2340 enable debug
2341 enable doc
2342 enable optimizations
2343 enable runtime_cpudetect
2344 enable safe_bitstream_reader
2345 enable static
2346 enable swscale_alpha
2347
2348 # Enable hwaccels by default.
2349 enable dxva2 vaapi vdpau
2350
2351 # build settings
2352 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2353 LIBPREF="lib"
2354 LIBSUF=".a"
2355 FULLNAME='$(NAME)$(BUILDSUF)'
2356 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2357 SLIBPREF="lib"
2358 SLIBSUF=".so"
2359 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2360 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2361 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2362 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2363 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2364 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2365
2366 asflags_filter=echo
2367 cflags_filter=echo
2368 ldflags_filter=echo
2369
2370 AS_C='-c'
2371 AS_O='-o $@'
2372 CC_C='-c'
2373 CC_E='-E -o $@'
2374 CC_O='-o $@'
2375 CXX_C='-c'
2376 CXX_O='-o $@'
2377 LD_O='-o $@'
2378 LD_LIB='-l%'
2379 LD_PATH='-L'
2380 HOSTCC_C='-c'
2381 HOSTCC_O='-o $@'
2382 HOSTLD_O='-o $@'
2383
2384 host_cflags='-O3 -g'
2385 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2386 host_libs='-lm'
2387 host_cflags_filter=echo
2388 host_ldflags_filter=echo
2389
2390 target_path='$(CURDIR)'
2391
2392 # since the object filename is not given with the -MM flag, the compiler
2393 # is only able to print the basename, and we must add the path ourselves
2394 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2395 DEPFLAGS='-MM'
2396
2397 # find source path
2398 if test -f configure; then
2399     source_path=.
2400 else
2401     source_path=$(cd $(dirname "$0"); pwd)
2402     echo "$source_path" | grep -q '[[:blank:]]' &&
2403         die "Out of tree builds are impossible with whitespace in source path."
2404     test -e "$source_path/config.h" &&
2405         die "Out of tree builds are impossible with config.h in source dir."
2406 fi
2407
2408 for v in "$@"; do
2409     r=${v#*=}
2410     l=${v%"$r"}
2411     r=$(sh_quote "$r")
2412     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2413 done
2414
2415 find_things(){
2416     thing=$1
2417     pattern=$2
2418     file=$source_path/$3
2419     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2420 }
2421
2422 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2423 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2424 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2425 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2426 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2427 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2428 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2429 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2430 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2431 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2432 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2433
2434 ALL_COMPONENTS="
2435     $BSF_LIST
2436     $DECODER_LIST
2437     $DEMUXER_LIST
2438     $ENCODER_LIST
2439     $FILTER_LIST
2440     $HWACCEL_LIST
2441     $INDEV_LIST
2442     $MUXER_LIST
2443     $OUTDEV_LIST
2444     $PARSER_LIST
2445     $PROTOCOL_LIST
2446 "
2447
2448 for n in $COMPONENT_LIST; do
2449     v=$(toupper ${n%s})_LIST
2450     eval enable \$$v
2451     eval ${n}_if_any="\$$v"
2452 done
2453
2454 enable $ARCH_EXT_LIST
2455
2456 die_unknown(){
2457     echo "Unknown option \"$1\"."
2458     echo "See $0 --help for available options."
2459     exit 1
2460 }
2461
2462 print_3_columns() {
2463     cat | tr ' ' '\n' | sort | pr -r -3 -t
2464 }
2465
2466 show_list() {
2467     suffix=_$1
2468     shift
2469     echo $* | sed s/$suffix//g | print_3_columns
2470     exit 0
2471 }
2472
2473 rand_list(){
2474     IFS=', '
2475     set -- $*
2476     unset IFS
2477     for thing; do
2478         comp=${thing%:*}
2479         prob=${thing#$comp}
2480         prob=${prob#:}
2481         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2482         echo "prob ${prob:-0.5}"
2483         printf '%s\n' $comp
2484     done
2485 }
2486
2487 do_random(){
2488     action=$1
2489     shift
2490     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2491     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2492 }
2493
2494 for opt do
2495     optval="${opt#*=}"
2496     case "$opt" in
2497         --extra-ldflags=*)
2498             add_ldflags $optval
2499         ;;
2500         --extra-libs=*)
2501             add_extralibs $optval
2502         ;;
2503         --disable-devices)
2504             disable $INDEV_LIST $OUTDEV_LIST
2505         ;;
2506         --enable-debug=*)
2507             debuglevel="$optval"
2508         ;;
2509         --disable-programs)
2510             disable $PROGRAM_LIST
2511         ;;
2512         --disable-everything)
2513             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2514         ;;
2515         --disable-all)
2516             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2517             disable $LIBRARY_LIST $PROGRAM_LIST doc
2518         ;;
2519         --enable-random|--disable-random)
2520             action=${opt%%-random}
2521             do_random ${action#--} $COMPONENT_LIST
2522         ;;
2523         --enable-random=*|--disable-random=*)
2524             action=${opt%%-random=*}
2525             do_random ${action#--} $optval
2526         ;;
2527         --enable-*=*|--disable-*=*)
2528             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2529             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2530             eval list=\$$(toupper $thing)_LIST
2531             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2532             list=$(filter "$name" $list)
2533             [ "$list" = "" ] && warn "Option $opt did not match anything"
2534             $action $list
2535         ;;
2536         --enable-?*|--disable-?*)
2537             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2538             if is_in $option $COMPONENT_LIST; then
2539                 test $action = disable && action=unset
2540                 eval $action \$$(toupper ${option%s})_LIST
2541             elif is_in $option $CMDLINE_SELECT; then
2542                 $action $option
2543             else
2544                 die_unknown $opt
2545             fi
2546         ;;
2547         --list-*)
2548             NAME="${opt#--list-}"
2549             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2550             NAME=${NAME%s}
2551             eval show_list $NAME \$$(toupper $NAME)_LIST
2552         ;;
2553         --help|-h) show_help
2554         ;;
2555         --fatal-warnings) enable fatal_warnings
2556         ;;
2557         *)
2558             optname="${opt%%=*}"
2559             optname="${optname#--}"
2560             optname=$(echo "$optname" | sed 's/-/_/g')
2561             if is_in $optname $CMDLINE_SET; then
2562                 eval $optname='$optval'
2563             elif is_in $optname $CMDLINE_APPEND; then
2564                 append $optname "$optval"
2565             else
2566                 die_unknown $opt
2567             fi
2568         ;;
2569     esac
2570 done
2571
2572 disabled logging && logfile=/dev/null
2573
2574 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2575 set >> $logfile
2576
2577 test -n "$cross_prefix" && enable cross_compile
2578
2579 if enabled cross_compile; then
2580     test -n "$arch" && test -n "$target_os" ||
2581         die "Must specify target arch and OS when cross-compiling"
2582 fi
2583
2584 ar_default="${cross_prefix}${ar_default}"
2585 cc_default="${cross_prefix}${cc_default}"
2586 cxx_default="${cross_prefix}${cxx_default}"
2587 nm_default="${cross_prefix}${nm_default}"
2588 pkg_config_default="${cross_prefix}${pkg_config_default}"
2589 ranlib="${cross_prefix}${ranlib}"
2590 strip_default="${cross_prefix}${strip_default}"
2591
2592 sysinclude_default="${sysroot}/usr/include"
2593
2594 test -n "$valgrind" && toolchain="valgrind-memcheck"
2595
2596 case "$toolchain" in
2597     clang-asan)
2598         cc_default="clang"
2599         add_cflags  -fsanitize=address
2600         add_ldflags -fsanitize=address
2601     ;;
2602     clang-tsan)
2603         cc_default="clang"
2604         add_cflags  -fsanitize=thread -pie
2605         add_ldflags -fsanitize=thread -pie
2606     ;;
2607     gcc-asan)
2608         cc_default="gcc"
2609         add_cflags  -fsanitize=address
2610         add_ldflags -fsanitize=address
2611     ;;
2612     gcc-tsan)
2613         cc_default="gcc"
2614         add_cflags  -fsanitize=thread -pie -fPIC
2615         add_ldflags -fsanitize=thread -pie -fPIC
2616     ;;
2617     valgrind-massif)
2618         target_exec_default=${valgrind:-"valgrind"}
2619         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"
2620     ;;
2621     valgrind-memcheck)
2622         target_exec_default=${valgrind:-"valgrind"}
2623         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2624     ;;
2625     msvc)
2626         # Check whether the current MSVC version needs the C99 converter.
2627         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2628         # support enough of C99 to build ffmpeg, but we still need to use
2629         # c99wrap for passing command line parameters with a space (for
2630         # avoiding msys path mangling/conversion issues). Default to the new
2631         # behaviour if the regexp was unable to match anything, since this
2632         # successfully parses the version number of existing supported
2633         # versions that require the converter (MSVC 2010 and 2012).
2634         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2635         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2636             cc_default="c99wrap -noconv cl"
2637         else
2638             cc_default="c99wrap cl"
2639         fi
2640         ld_default="c99wrap link"
2641         nm_default="dumpbin -symbols"
2642         ar_default="lib"
2643         target_os_default="win32"
2644     ;;
2645     icl)
2646         cc_default="c99wrap -noconv icl"
2647         ld_default="c99wrap xilink"
2648         nm_default="dumpbin -symbols"
2649         ar_default="xilib"
2650         target_os_default="win32"
2651     ;;
2652     gcov)
2653         add_cflags  -fprofile-arcs -ftest-coverage
2654         add_ldflags -fprofile-arcs -ftest-coverage
2655     ;;
2656     hardened)
2657         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2658         add_ldflags -Wl,-z,relro -Wl,-z,now
2659     ;;
2660     ?*)
2661         die "Unknown toolchain $toolchain"
2662     ;;
2663 esac
2664
2665 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2666 enabled cross_compile || host_cc_default=$cc
2667 set_default host_cc
2668
2669 if ! $pkg_config --version >/dev/null 2>&1; then
2670     warn "$pkg_config not found, library detection may fail."
2671     pkg_config=false
2672 fi
2673
2674 exesuf() {
2675     case $1 in
2676         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2677     esac
2678 }
2679
2680 EXESUF=$(exesuf $target_os)
2681 HOSTEXESUF=$(exesuf $host_os)
2682
2683 # set temporary file name
2684 : ${TMPDIR:=$TEMPDIR}
2685 : ${TMPDIR:=$TMP}
2686 : ${TMPDIR:=/tmp}
2687
2688 if [ -n "$tempprefix" ] ; then
2689     mktemp(){
2690         echo $tempprefix.${HOSTNAME}.${UID}
2691     }
2692 elif ! check_cmd mktemp -u XXXXXX; then
2693     # simple replacement for missing mktemp
2694     # NOT SAFE FOR GENERAL USE
2695     mktemp(){
2696         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2697     }
2698 fi
2699
2700 tmpfile(){
2701     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2702         (set -C; exec > $tmp) 2>/dev/null ||
2703         die "Unable to create temporary file in $TMPDIR."
2704     append TMPFILES $tmp
2705     eval $1=$tmp
2706 }
2707
2708 trap 'rm -f -- $TMPFILES' EXIT
2709
2710 tmpfile TMPASM .asm
2711 tmpfile TMPC   .c
2712 tmpfile TMPCPP .cpp
2713 tmpfile TMPE   $EXESUF
2714 tmpfile TMPH   .h
2715 tmpfile TMPO   .o
2716 tmpfile TMPS   .S
2717 tmpfile TMPSH  .sh
2718 tmpfile TMPV   .ver
2719
2720 unset -f mktemp
2721
2722 chmod +x $TMPE
2723
2724 # make sure we can execute files in $TMPDIR
2725 cat > $TMPSH 2>> $logfile <<EOF
2726 #! /bin/sh
2727 EOF
2728 chmod +x $TMPSH >> $logfile 2>&1
2729 if ! $TMPSH >> $logfile 2>&1; then
2730     cat <<EOF
2731 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2732 variable to another directory and make sure that it is not mounted noexec.
2733 EOF
2734     die "Sanity test failed."
2735 fi
2736
2737 ccc_flags(){
2738     for flag; do
2739         case $flag in
2740             -std=c99)           echo -c99                       ;;
2741             -mcpu=*)            echo -arch ${flag#*=}           ;;
2742             -mieee)             echo -ieee                      ;;
2743             -O*|-fast)          echo $flag                      ;;
2744             -fno-math-errno)    echo -assume nomath_errno       ;;
2745             -g)                 echo -g3                        ;;
2746             -Wall)              echo -msg_enable level2         ;;
2747             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2748             -Wl,*)              echo $flag                      ;;
2749             -f*|-W*)                                            ;;
2750             *)                  echo $flag                      ;;
2751         esac
2752    done
2753 }
2754
2755 cparser_flags(){
2756     for flag; do
2757         case $flag in
2758             -Wno-switch)             echo -Wno-switch-enum ;;
2759             -Wno-format-zero-length) ;;
2760             -Wdisabled-optimization) ;;
2761             -Wno-pointer-sign)       echo -Wno-other ;;
2762             *)                       echo $flag ;;
2763         esac
2764     done
2765 }
2766
2767 msvc_common_flags(){
2768     for flag; do
2769         case $flag in
2770             # In addition to specifying certain flags under the compiler
2771             # specific filters, they must be specified here as well or else the
2772             # generic catch all at the bottom will print the original flag.
2773             -Wall)                ;;
2774             -std=c99)             ;;
2775             # Common flags
2776             -fomit-frame-pointer) ;;
2777             -g)                   echo -Z7 ;;
2778             -fno-math-errno)      ;;
2779             -fno-common)          ;;
2780             -fno-signed-zeros)    ;;
2781             -fPIC)                ;;
2782             -mthumb)              ;;
2783             -march=*)             ;;
2784             -lz)                  echo zlib.lib ;;
2785             -lavifil32)           echo vfw32.lib ;;
2786             -lavicap32)           echo vfw32.lib user32.lib ;;
2787             -l*)                  echo ${flag#-l}.lib ;;
2788             *)                    echo $flag ;;
2789         esac
2790     done
2791 }
2792
2793 msvc_flags(){
2794     msvc_common_flags "$@"
2795     for flag; do
2796         case $flag in
2797             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2798                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2799                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2800                                        -wd4554 \
2801                                        -wd4273 ;;
2802         esac
2803     done
2804 }
2805
2806 icl_flags(){
2807     msvc_common_flags "$@"
2808     for flag; do
2809         case $flag in
2810             # Despite what Intel's documentation says -Wall, which is supported
2811             # on Windows, does enable remarks so disable them here.
2812             -Wall)                echo $flag -Qdiag-disable:remark ;;
2813             -std=c99)             echo -Qstd=c99 ;;
2814         esac
2815     done
2816 }
2817
2818 pgi_flags(){
2819     for flag; do
2820         case $flag in
2821             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2822             -fomit-frame-pointer) echo -Mnoframe ;;
2823             -g)                   echo -gopt ;;
2824             *)                    echo $flag ;;
2825         esac
2826     done
2827 }
2828
2829 suncc_flags(){
2830     for flag; do
2831         case $flag in
2832             -march=*|-mcpu=*)
2833                 case "${flag#*=}" in
2834                     native)                   echo -xtarget=native       ;;
2835                     v9|niagara)               echo -xarch=sparc          ;;
2836                     ultrasparc)               echo -xarch=sparcvis       ;;
2837                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2838                     i586|pentium)             echo -xchip=pentium        ;;
2839                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2840                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2841                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2842                     pentium4*)          echo -xtarget=pentium4           ;;
2843                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2844                     *-sse3)             echo -xarch=sse3                 ;;
2845                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2846                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2847                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2848                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2849                     bdver*)                    echo -xarch=avx           ;;
2850                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2851                     k8|opteron|athlon64|athlon-fx)
2852                                                echo -xarch=sse2a         ;;
2853                     athlon*)                   echo -xarch=pentium_proa  ;;
2854                 esac
2855                 ;;
2856             -std=c99)             echo -xc99              ;;
2857             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2858             -fPIC)                echo -KPIC -xcode=pic32 ;;
2859             -W*,*)                echo $flag              ;;
2860             -f*-*|-W*|-mimpure-text)                      ;;
2861             -shared)              echo -G                 ;;
2862             *)                    echo $flag              ;;
2863         esac
2864     done
2865 }
2866
2867 tms470_flags(){
2868     for flag; do
2869         case $flag in
2870             -march=*|-mcpu=*)
2871                 case "${flag#*=}" in
2872                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2873                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2874                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2875                     armv6*|arm11*)          echo -mv=6   ;;
2876                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2877                                             echo -mv=5e  ;;
2878                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2879                 esac
2880                 ;;
2881             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2882             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2883             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2884             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2885             -msoft-float)   echo --float_support=vfplib       ;;
2886             -O[0-3]|-mf=*)  echo $flag                        ;;
2887             -g)             echo -g -mn                       ;;
2888             -pds=*)         echo $flag                        ;;
2889             -D*|-I*)        echo $flag                        ;;
2890             --gcc|--abi=*)  echo $flag                        ;;
2891             -me)            echo $flag                        ;;
2892         esac
2893     done
2894 }
2895
2896 probe_cc(){
2897     pfx=$1
2898     _cc=$2
2899
2900     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2901     unset _ld_o _ldflags _ld_lib _ld_path
2902     unset _depflags _DEPCMD _DEPFLAGS
2903     _flags_filter=echo
2904
2905     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2906         true # no-op to avoid reading stdin in following checks
2907     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2908         _type=llvm_gcc
2909         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2910         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2911         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2912         _cflags_speed='-O3'
2913         _cflags_size='-Os'
2914     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2915         _type=gcc
2916         gcc_version=$($_cc --version | head -n1)
2917         gcc_basever=$($_cc -dumpversion)
2918         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2919         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2920         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2921         if ! $_cc -dumpversion | grep -q '^2\.'; then
2922             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2923         fi
2924         _cflags_speed='-O3'
2925         _cflags_size='-Os'
2926     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2927         _type=icc
2928         _ident=$($_cc --version | head -n1)
2929         _depflags='-MMD'
2930         _cflags_speed='-O3'
2931         _cflags_size='-Os'
2932         _cflags_noopt='-O1'
2933     elif $_cc -v 2>&1 | grep -q xlc; then
2934         _type=xlc
2935         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2936         _cflags_speed='-O5'
2937         _cflags_size='-O5 -qcompact'
2938     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2939         _type=ccc
2940         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2941         _DEPFLAGS='-M'
2942         _cflags_speed='-fast'
2943         _cflags_size='-O1'
2944         _flags_filter=ccc_flags
2945     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2946         test -d "$sysroot" || die "No valid sysroot specified."
2947         _type=armcc
2948         _ident=$($_cc --vsn | head -n1)
2949         armcc_conf="$PWD/armcc.conf"
2950         $_cc --arm_linux_configure                 \
2951              --arm_linux_config_file="$armcc_conf" \
2952              --configure_sysroot="$sysroot"        \
2953              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2954              die "Error creating armcc configuration file."
2955         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2956         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2957         as_default="${cross_prefix}gcc"
2958         _depflags='-MMD'
2959         _cflags_speed='-O3'
2960         _cflags_size='-Os'
2961     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2962         _type=tms470
2963         _ident=$($_cc -version | head -n1 | tr -s ' ')
2964         _flags='--gcc --abi=eabi -me'
2965         _cc_e='-ppl -fe=$@'
2966         _cc_o='-fe=$@'
2967         _depflags='-ppa -ppd=$(@:.o=.d)'
2968         _cflags_speed='-O3 -mf=5'
2969         _cflags_size='-O3 -mf=2'
2970         _flags_filter=tms470_flags
2971     elif $_cc -v 2>&1 | grep -q clang; then
2972         _type=clang
2973         _ident=$($_cc --version | head -n1)
2974         _depflags='-MMD'
2975         _cflags_speed='-O3'
2976         _cflags_size='-Os'
2977     elif $_cc -V 2>&1 | grep -q Sun; then
2978         _type=suncc
2979         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2980         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2981         _DEPFLAGS='-xM1 -xc99'
2982         _ldflags='-std=c99'
2983         _cflags_speed='-O5'
2984         _cflags_size='-O5 -xspace'
2985         _flags_filter=suncc_flags
2986     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2987         _type=pathscale
2988         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2989         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2990         _cflags_speed='-O2'
2991         _cflags_size='-Os'
2992         _flags_filter='filter_out -Wdisabled-optimization'
2993     elif $_cc -v 2>&1 | grep -q Open64; then
2994         _type=open64
2995         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2996         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2997         _cflags_speed='-O2'
2998         _cflags_size='-Os'
2999         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3000     elif $_cc -V 2>&1 | grep -q Portland; then
3001         _type=pgi
3002         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3003         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3004         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3005         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3006         _cflags_noopt="-O"
3007         _flags_filter=pgi_flags
3008     elif $_cc 2>&1 | grep -q Microsoft; then
3009         _type=msvc
3010         _ident=$($cc 2>&1 | head -n1)
3011         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3012         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3013         _cflags_speed="-O2"
3014         _cflags_size="-O1"
3015         # Nonstandard output options, to avoid msys path conversion issues.
3016         # Relies on wrapper to remap it.
3017         if $_cc 2>&1 | grep -q Linker; then
3018             _ld_o='-out $@'
3019         else
3020             _ld_o='-Fe$@'
3021         fi
3022         _cc_o='-Fo $@'
3023         _cc_e='-P -Fi $@'
3024         _flags_filter=msvc_flags
3025         _ld_lib='lib%.a'
3026         _ld_path='-libpath:'
3027         _flags='-nologo'
3028         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3029         if [ $pfx = hostcc ]; then
3030             append _cflags -Dsnprintf=_snprintf
3031         fi
3032         disable stripping
3033     elif $_cc 2>&1 | grep -q Intel; then
3034         _type=icl
3035         _ident=$($cc 2>&1 | head -n1)
3036         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3037         # Not only is O3 broken on 13.x+ but it is slower on all previous
3038         # versions (tested) as well.
3039         _cflags_speed="-O2"
3040         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3041         # Nonstandard output options, to avoid msys path conversion issues.
3042         # Relies on wrapper to remap it.
3043         if $_cc 2>&1 | grep -q Linker; then
3044             _ld_o='-out $@'
3045         else
3046             _ld_o='-Fe$@'
3047         fi
3048         _cc_o='-Fo $@'
3049         _cc_e='-P'
3050         _flags_filter=icl_flags
3051         _ld_lib='lib%.a'
3052         _ld_path='-libpath:'
3053         # -Qdiag-error to make icl error when seeing certain unknown arguments
3054         _flags='-nologo -Qdiag-error:4044,10157'
3055         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3056         # with MSVC which enables it by default.
3057         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3058         if [ $pfx = hostcc ]; then
3059             append _cflags -Dsnprintf=_snprintf
3060         fi
3061     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3062         _type=cparser
3063         _ident=$($_cc --version | head -n1)
3064         _depflags='-MMD'
3065         _cflags_speed='-O4'
3066         _cflags_size='-O2'
3067         _flags_filter=cparser_flags
3068     fi
3069
3070     eval ${pfx}_type=\$_type
3071     eval ${pfx}_ident=\$_ident
3072 }
3073
3074 set_ccvars(){
3075     eval ${1}_C=\${_cc_c-\${${1}_C}}
3076     eval ${1}_E=\${_cc_e-\${${1}_E}}
3077     eval ${1}_O=\${_cc_o-\${${1}_O}}
3078
3079     if [ -n "$_depflags" ]; then
3080         eval ${1}_DEPFLAGS=\$_depflags
3081     else
3082         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3083         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3084         eval DEP${1}FLAGS=\$_flags
3085     fi
3086 }
3087
3088 probe_cc cc "$cc"
3089 cflags_filter=$_flags_filter
3090 cflags_speed=$_cflags_speed
3091 cflags_size=$_cflags_size
3092 cflags_noopt=$_cflags_noopt
3093 add_cflags $_flags $_cflags
3094 cc_ldflags=$_ldflags
3095 set_ccvars CC
3096
3097 probe_cc hostcc "$host_cc"
3098 host_cflags_filter=$_flags_filter
3099 add_host_cflags  $_flags $_cflags
3100 set_ccvars HOSTCC
3101
3102 test -n "$cc_type" && enable $cc_type ||
3103     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3104
3105 : ${as_default:=$cc}
3106 : ${dep_cc_default:=$cc}
3107 : ${ld_default:=$cc}
3108 : ${host_ld_default:=$host_cc}
3109 set_default ar as dep_cc ld host_ld
3110
3111 probe_cc as "$as"
3112 asflags_filter=$_flags_filter
3113 add_asflags $_flags $_cflags
3114 set_ccvars AS
3115
3116 probe_cc ld "$ld"
3117 ldflags_filter=$_flags_filter
3118 add_ldflags $_flags $_ldflags
3119 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3120 LD_O=${_ld_o-$LD_O}
3121 LD_LIB=${_ld_lib-$LD_LIB}
3122 LD_PATH=${_ld_path-$LD_PATH}
3123
3124 probe_cc hostld "$host_ld"
3125 host_ldflags_filter=$_flags_filter
3126 add_host_ldflags $_flags $_ldflags
3127 HOSTLD_O=${_ld_o-$HOSTLD_O}
3128
3129 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3130     probe_cc depcc "$dep_cc"
3131     CCDEP=${_DEPCMD:-$DEPCMD}
3132     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3133     DEPCCFLAGS=$_flags
3134 fi
3135
3136 if $ar 2>&1 | grep -q Microsoft; then
3137     arflags="-nologo"
3138     ar_o='-out:$@'
3139 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3140     arflags="rq"
3141     ar_o='$@'
3142 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3143     arflags='-Xany -r -c'
3144     ar_o='$@'
3145 else
3146     arflags="rc"
3147     ar_o='$@'
3148 fi
3149
3150 add_cflags $extra_cflags
3151 add_cxxflags $extra_cxxflags
3152 add_asflags $extra_cflags
3153
3154 if test -n "$sysroot"; then
3155     case "$cc_type" in
3156         gcc|llvm_gcc|clang)
3157             add_cppflags --sysroot="$sysroot"
3158             add_ldflags --sysroot="$sysroot"
3159         ;;
3160         tms470)
3161             add_cppflags -I"$sysinclude"
3162             add_ldflags  --sysroot="$sysroot"
3163         ;;
3164     esac
3165 fi
3166
3167 if test "$cpu" = host; then
3168     enabled cross_compile &&
3169         die "--cpu=host makes no sense when cross-compiling."
3170
3171     case "$cc_type" in
3172         gcc|llvm_gcc)
3173             check_native(){
3174                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3175                 sed -n "/cc1.*$1=/{
3176                             s/.*$1=\\([^ ]*\\).*/\\1/
3177                             p
3178                             q
3179                         }" $TMPE
3180             }
3181             cpu=$(check_native -march || check_native -mcpu)
3182         ;;
3183     esac
3184
3185     test "${cpu:-host}" = host &&
3186         die "--cpu=host not supported with compiler $cc"
3187 fi
3188
3189 # Deal with common $arch aliases
3190 case "$arch" in
3191     aarch64|arm64)
3192         arch="aarch64"
3193     ;;
3194     arm*|iPad*|iPhone*)
3195         arch="arm"
3196     ;;
3197     mips*|IP*)
3198         arch="mips"
3199     ;;
3200     parisc*|hppa*)
3201         arch="parisc"
3202     ;;
3203     "Power Macintosh"|ppc*|powerpc*)
3204         arch="ppc"
3205     ;;
3206     s390|s390x)
3207         arch="s390"
3208     ;;
3209     sh4|sh)
3210         arch="sh4"
3211     ;;
3212     sun4u|sparc*)
3213         arch="sparc"
3214     ;;
3215     tilegx|tile-gx)
3216         arch="tilegx"
3217     ;;
3218     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3219         arch="x86"
3220     ;;
3221 esac
3222
3223 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3224 enable $arch
3225
3226 # Add processor-specific flags
3227 if enabled aarch64; then
3228
3229     case $cpu in
3230         armv*)
3231             cpuflags="-march=$cpu"
3232         ;;
3233         *)
3234             cpuflags="-mcpu=$cpu"
3235         ;;
3236     esac
3237
3238 elif enabled alpha; then
3239
3240     cpuflags="-mcpu=$cpu"
3241
3242 elif enabled arm; then
3243
3244     check_arm_arch() {
3245         check_cpp_condition stddef.h \
3246             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3247             $cpuflags
3248     }
3249
3250     probe_arm_arch() {
3251         if   check_arm_arch 4;        then echo armv4;
3252         elif check_arm_arch 4T;       then echo armv4t;
3253         elif check_arm_arch 5;        then echo armv5;
3254         elif check_arm_arch 5E;       then echo armv5e;
3255         elif check_arm_arch 5T;       then echo armv5t;
3256         elif check_arm_arch 5TE;      then echo armv5te;
3257         elif check_arm_arch 5TEJ;     then echo armv5te;
3258         elif check_arm_arch 6;        then echo armv6;
3259         elif check_arm_arch 6J;       then echo armv6j;
3260         elif check_arm_arch 6K;       then echo armv6k;
3261         elif check_arm_arch 6Z;       then echo armv6z;
3262         elif check_arm_arch 6ZK;      then echo armv6zk;
3263         elif check_arm_arch 6T2;      then echo armv6t2;
3264         elif check_arm_arch 7;        then echo armv7;
3265         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3266         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3267         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3268         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3269         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3270         fi
3271     }
3272
3273     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3274
3275     case $cpu in
3276         armv*)
3277             cpuflags="-march=$cpu"
3278             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3279         ;;
3280         *)
3281             cpuflags="-mcpu=$cpu"
3282             case $cpu in
3283                 cortex-a*)                               subarch=armv7a  ;;
3284                 cortex-r*)                               subarch=armv7r  ;;
3285                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3286                 arm11*)                                  subarch=armv6   ;;
3287                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3288                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3289                 *)                             subarch=$(probe_arm_arch) ;;
3290             esac
3291         ;;
3292     esac
3293
3294     case "$subarch" in
3295         armv5t*)    enable fast_clz                ;;
3296         armv[6-8]*) enable fast_clz fast_unaligned ;;
3297     esac
3298
3299 elif enabled avr32; then
3300
3301     case $cpu in
3302         ap7[02]0[0-2])
3303             subarch="avr32_ap"
3304             cpuflags="-mpart=$cpu"
3305         ;;
3306         ap)
3307             subarch="avr32_ap"
3308             cpuflags="-march=$cpu"
3309         ;;
3310         uc3[ab]*)
3311             subarch="avr32_uc"
3312             cpuflags="-mcpu=$cpu"
3313         ;;
3314         uc)
3315             subarch="avr32_uc"
3316             cpuflags="-march=$cpu"
3317         ;;
3318     esac
3319
3320 elif enabled bfin; then
3321
3322     cpuflags="-mcpu=$cpu"
3323
3324 elif enabled mips; then
3325
3326     cpuflags="-march=$cpu"
3327
3328     case $cpu in
3329         24kc)
3330             disable mipsfpu
3331             disable mipsdspr1
3332             disable mipsdspr2
3333         ;;
3334         24kf*)
3335             disable mipsdspr1
3336             disable mipsdspr2
3337         ;;
3338         24kec|34kc|1004kc)
3339             disable mipsfpu
3340             disable mipsdspr2
3341         ;;
3342         24kef*|34kf*|1004kf*)
3343             disable mipsdspr2
3344         ;;
3345         74kc)
3346             disable mipsfpu
3347         ;;
3348     esac
3349
3350 elif enabled ppc; then
3351
3352     case $(tolower $cpu) in
3353         601|ppc601|powerpc601)
3354             cpuflags="-mcpu=601"
3355             disable altivec
3356         ;;
3357         603*|ppc603*|powerpc603*)
3358             cpuflags="-mcpu=603"
3359             disable altivec
3360         ;;
3361         604*|ppc604*|powerpc604*)
3362             cpuflags="-mcpu=604"
3363             disable altivec
3364         ;;
3365         g3|75*|ppc75*|powerpc75*)
3366             cpuflags="-mcpu=750"
3367             disable altivec
3368         ;;
3369         g4|745*|ppc745*|powerpc745*)
3370             cpuflags="-mcpu=7450"
3371         ;;
3372         74*|ppc74*|powerpc74*)
3373             cpuflags="-mcpu=7400"
3374         ;;
3375         g5|970|ppc970|powerpc970)
3376             cpuflags="-mcpu=970"
3377         ;;
3378         power[3-7]*)
3379             cpuflags="-mcpu=$cpu"
3380         ;;
3381         cell)
3382             cpuflags="-mcpu=cell"
3383             enable ldbrx
3384         ;;
3385         e500mc)
3386             cpuflags="-mcpu=e500mc"
3387             disable altivec
3388         ;;
3389         e500v2)
3390             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3391             disable altivec
3392         ;;
3393         e500)
3394             cpuflags="-mcpu=8540 -mhard-float"
3395             disable altivec
3396         ;;
3397     esac
3398
3399 elif enabled sparc; then
3400
3401     case $cpu in
3402         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3403             cpuflags="-mcpu=$cpu"
3404             disable vis
3405         ;;
3406         ultrasparc*|niagara[234])
3407             cpuflags="-mcpu=$cpu"
3408         ;;
3409     esac
3410
3411 elif enabled x86; then
3412
3413     case $cpu in
3414         i[345]86|pentium)
3415             cpuflags="-march=$cpu"
3416             disable mmx
3417         ;;
3418         # targets that do NOT support nopl and conditional mov (cmov)
3419         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3420             cpuflags="-march=$cpu"
3421             disable i686
3422         ;;
3423         # targets that do support nopl and conditional mov (cmov)
3424         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3425             cpuflags="-march=$cpu"
3426             enable i686
3427             enable fast_cmov
3428         ;;
3429         # targets that do support conditional mov but on which it's slow
3430         pentium4|pentium4m|prescott|nocona)
3431             cpuflags="-march=$cpu"
3432             enable i686
3433             disable fast_cmov
3434         ;;
3435     esac
3436
3437 fi
3438
3439 if [ "$cpu" != generic ]; then
3440     add_cflags  $cpuflags
3441     add_asflags $cpuflags
3442 fi
3443
3444 # compiler sanity check
3445 check_exec <<EOF
3446 int main(void){ return 0; }
3447 EOF
3448 if test "$?" != 0; then
3449     echo "$cc is unable to create an executable file."
3450     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3451         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3452         echo "Only do this if you know what cross compiling means."
3453     fi
3454     die "C compiler test failed."
3455 fi
3456
3457 add_cppflags -D_ISOC99_SOURCE
3458 add_cxxflags -D__STDC_CONSTANT_MACROS
3459 check_cflags -std=c99
3460 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3461 #include <stdlib.h>
3462 EOF
3463 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3464 #include <stdlib.h>
3465 EOF
3466
3467 check_host_cflags -std=c99
3468 check_host_cflags -Wall
3469
3470 check_64bit(){
3471     arch32=$1
3472     arch64=$2
3473     expr=$3
3474     check_code cc "" "int test[2*($expr) - 1]" &&
3475         subarch=$arch64 || subarch=$arch32
3476 }
3477
3478 case "$arch" in
3479     aarch64|alpha|ia64)
3480         spic=$shared
3481     ;;
3482     mips)
3483         check_64bit mips mips64 '_MIPS_SIM > 1'
3484         spic=$shared
3485     ;;
3486     parisc)
3487         check_64bit parisc parisc64 'sizeof(void *) > 4'
3488         spic=$shared
3489     ;;
3490     ppc)
3491         check_64bit ppc ppc64 'sizeof(void *) > 4'
3492         spic=$shared
3493     ;;
3494     sparc)
3495         check_64bit sparc sparc64 'sizeof(void *) > 4'
3496         spic=$shared
3497     ;;
3498     x86)
3499         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3500         if test "$subarch" = "x86_64"; then
3501             spic=$shared
3502         fi
3503     ;;
3504     ppc)
3505         check_cc <<EOF && subarch="ppc64"
3506         int test[(int)sizeof(char*) - 7];
3507 EOF
3508     ;;
3509 esac
3510
3511 enable $subarch
3512 enabled spic && enable_weak pic
3513
3514 # OS specific
3515 case $target_os in
3516     aix)
3517         SHFLAGS=-shared
3518         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3519         enabled shared && add_ldflags -Wl,-brtl
3520         ;;
3521     haiku)
3522         prefix_default="/boot/common"
3523         network_extralibs="-lnetwork"
3524         host_libs=
3525         ;;
3526     sunos)
3527         SHFLAGS='-shared -Wl,-h,$$(@F)'
3528         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3529         network_extralibs="-lsocket -lnsl"
3530         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3531         # When using suncc to build, the Solaris linker will mark
3532         # an executable with each instruction set encountered by
3533         # the Solaris assembler.  As our libraries contain their own
3534         # guards for processor-specific code, instead suppress
3535         # generation of the HWCAPS ELF section on Solaris x86 only.
3536         enabled_all suncc x86 &&
3537             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3538             add_ldflags -Wl,-M,mapfile
3539         nm_default='nm -P -g'
3540         ;;
3541     netbsd)
3542         disable symver
3543         oss_indev_extralibs="-lossaudio"
3544         oss_outdev_extralibs="-lossaudio"
3545         enabled gcc || check_ldflags -Wl,-zmuldefs
3546         ;;
3547     openbsd|bitrig)
3548         disable symver
3549         SHFLAGS='-shared'
3550         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3551         SLIB_INSTALL_LINKS=
3552         oss_indev_extralibs="-lossaudio"
3553         oss_outdev_extralibs="-lossaudio"
3554         ;;
3555     dragonfly)
3556         disable symver
3557         ;;
3558     freebsd)
3559         ;;
3560     bsd/os)
3561         add_extralibs -lpoll -lgnugetopt
3562         strip="strip -d"
3563         ;;
3564     darwin)
3565         gas="gas-preprocessor.pl $cc"
3566         enabled ppc && add_asflags -force_cpusubtype_ALL
3567         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3568         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3569         strip="${strip} -x"
3570         add_ldflags -Wl,-dynamic,-search_paths_first
3571         SLIBSUF=".dylib"
3572         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3573         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3574         objformat="macho"
3575         enabled x86_64 && objformat="macho64"
3576         enabled_any pic shared ||
3577             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3578         ;;
3579     mingw32*)
3580         if test $target_os = "mingw32ce"; then
3581             disable network
3582         else
3583             target_os=mingw32
3584         fi
3585         LIBTARGET=i386
3586         if enabled x86_64; then
3587             LIBTARGET="i386:x86-64"
3588         elif enabled arm; then
3589             LIBTARGET=arm-wince
3590         fi
3591         check_ldflags -Wl,--nxcompat
3592         check_ldflags -Wl,--dynamicbase
3593         shlibdir_default="$bindir_default"
3594         SLIBPREF=""
3595         SLIBSUF=".dll"
3596         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3597         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3598         dlltool="${cross_prefix}dlltool"
3599         if check_cmd lib.exe -list; then
3600             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3601             if enabled x86_64; then
3602                 LIBTARGET=x64
3603             fi
3604         elif check_cmd $dlltool --version; then
3605             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3606         fi
3607         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3608         SLIB_INSTALL_LINKS=
3609         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3610         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3611         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3612         objformat="win32"
3613         ranlib=:
3614         enable dos_paths
3615         ;;
3616     win32|win64)
3617         if enabled shared; then
3618             # Link to the import library instead of the normal static library
3619             # for shared libs.
3620             LD_LIB='%.lib'
3621             # Cannot build both shared and static libs with MSVC or icl.
3622             disable static
3623         fi
3624         shlibdir_default="$bindir_default"
3625         SLIBPREF=""
3626         SLIBSUF=".dll"
3627         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3628         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3629         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3630         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3631         SLIB_INSTALL_LINKS=
3632         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3633         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3634         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3635         objformat="win32"
3636         ranlib=:
3637         enable dos_paths
3638         ;;
3639     cygwin*)
3640         target_os=cygwin
3641         shlibdir_default="$bindir_default"
3642         SLIBPREF="cyg"
3643         SLIBSUF=".dll"
3644         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3645         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3646         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3647         SLIB_INSTALL_LINKS=
3648         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3649         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3650         objformat="win32"
3651         enable dos_paths
3652         ;;
3653     *-dos|freedos|opendos)
3654         network_extralibs="-lsocket"
3655         objformat="coff"
3656         enable dos_paths
3657         add_cppflags -U__STRICT_ANSI__
3658         ;;
3659     linux)
3660         enable dv1394
3661         ;;
3662     irix*)
3663         target_os=irix
3664         ranlib="echo ignoring ranlib"
3665         ;;
3666     os/2*)
3667         strip="lxlite -CS"
3668         ln_s="cp -f"
3669         objformat="aout"
3670         add_cppflags -D_GNU_SOURCE
3671         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3672         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3673         LIBSUF="_s.a"
3674         SLIBPREF=""
3675         SLIBSUF=".dll"
3676         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3677         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3678         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3679             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3680             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3681             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3682             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3683             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3684         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3685             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3686         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3687         enable dos_paths
3688         enable_weak os2threads
3689         ;;
3690     gnu/kfreebsd)
3691         add_cppflags -D_BSD_SOURCE
3692         ;;
3693     gnu)
3694         ;;
3695     qnx)
3696         add_cppflags -D_QNX_SOURCE
3697         network_extralibs="-lsocket"
3698         ;;
3699     symbian)
3700         SLIBSUF=".dll"
3701         enable dos_paths
3702         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3703         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3704         add_ldflags -Wl,--target1-abs,--no-undefined \
3705                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3706                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3707         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3708                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3709                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3710         ;;
3711     osf1)
3712         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3713         ;;
3714     minix)
3715         ;;
3716     plan9)
3717         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3718                      -D_REENTRANT_SOURCE        \
3719                      -D_RESEARCH_SOURCE         \
3720                      -DFD_SETSIZE=96            \
3721                      -DHAVE_SOCK_OPTS
3722         add_compat strtod.o strtod=avpriv_strtod
3723         network_extralibs='-lbsd'
3724         exeobjs=compat/plan9/main.o
3725         disable ffserver
3726         cp_f='cp'
3727         ;;
3728     none)
3729         ;;
3730     *)
3731         die "Unknown OS '$target_os'."
3732         ;;
3733 esac
3734
3735 # determine libc flavour
3736
3737 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3738 if check_cpp_condition features.h "defined __UCLIBC__"; then
3739     libc_type=uclibc
3740     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3741 elif check_cpp_condition features.h "defined __GLIBC__"; then
3742     libc_type=glibc
3743     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3744 # MinGW headers can be installed on Cygwin, so check for newlib first.
3745 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3746     libc_type=newlib
3747     add_cppflags -U__STRICT_ANSI__
3748 elif check_header _mingw.h; then
3749     libc_type=mingw
3750     check_cpp_condition _mingw.h \
3751         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3752             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3753         die "ERROR: MinGW runtime version must be >= 3.15."
3754     add_cppflags -U__STRICT_ANSI__
3755     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3756             __MINGW64_VERSION_MAJOR < 3"; then
3757         add_compat msvcrt/snprintf.o
3758         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3759     else
3760         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3761     fi
3762 elif check_func_headers stdlib.h _get_doserrno; then
3763     libc_type=msvcrt
3764     add_compat strtod.o strtod=avpriv_strtod
3765     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3766                                  _snprintf=avpriv_snprintf  \
3767                                  vsnprintf=avpriv_vsnprintf
3768     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3769     # 0x601 by default unless something else is set by the user.
3770     # This can easily lead to us detecting functions only present
3771     # in such new versions and producing binaries requiring windows 7.0.
3772     # Therefore explicitly set the default to XP unless the user has
3773     # set something else on the command line.
3774     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3775 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3776     libc_type=klibc
3777 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3778     libc_type=bionic
3779     add_compat strtod.o strtod=avpriv_strtod
3780 fi
3781
3782 test -n "$libc_type" && enable $libc_type
3783
3784 # hacks for compiler/libc/os combinations
3785
3786 if enabled_all tms470 glibc; then
3787     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3788     add_cppflags -D__USER_LABEL_PREFIX__=
3789     add_cppflags -D__builtin_memset=memset
3790     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3791     add_cflags   -pds=48    # incompatible redefinition of macro
3792 fi
3793
3794 if enabled_all ccc glibc; then
3795     add_ldflags -Wl,-z,now  # calls to libots crash without this
3796 fi
3797
3798 esc(){
3799     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3800 }
3801
3802 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3803
3804 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3805
3806 set_default $PATHS_LIST
3807 set_default nm
3808
3809 # we need to build at least one lib type
3810 if ! enabled_any static shared; then
3811     cat <<EOF
3812 At least one library type must be built.
3813 Specify --enable-static to build the static libraries or --enable-shared to
3814 build the shared libraries as well. To only build the shared libraries specify
3815 --disable-static in addition to --enable-shared.
3816 EOF
3817     exit 1;
3818 fi
3819
3820 # backward compatibility layer for incompatible_libav/fork_abi
3821 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3822 enabled incompatible_libav_abi && enable incompatible_fork_abi
3823
3824 die_license_disabled() {
3825     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3826 }
3827
3828 die_license_disabled_gpl() {
3829     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3830 }
3831
3832 die_license_disabled gpl frei0r
3833 die_license_disabled gpl libcdio
3834 die_license_disabled gpl libutvideo
3835 die_license_disabled gpl libvidstab
3836 die_license_disabled gpl libx264
3837 die_license_disabled gpl libxavs
3838 die_license_disabled gpl libxvid
3839 die_license_disabled gpl libzvbi
3840 die_license_disabled gpl x11grab
3841
3842 die_license_disabled nonfree libaacplus
3843 die_license_disabled nonfree libfaac
3844 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3845 enabled gpl && die_license_disabled_gpl nonfree openssl
3846
3847 die_license_disabled version3 libopencore_amrnb
3848 die_license_disabled version3 libopencore_amrwb
3849 die_license_disabled version3 libvo_aacenc
3850 die_license_disabled version3 libvo_amrwbenc
3851
3852 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3853
3854 disabled optimizations || check_cflags -fomit-frame-pointer
3855
3856 enable_weak_pic() {
3857     disabled pic && return
3858     enable pic
3859     add_cppflags -DPIC
3860     case "$target_os" in
3861     mingw*|cygwin*)
3862         ;;
3863     *)
3864         add_cflags -fPIC
3865         ;;
3866     esac
3867     add_asflags  -fPIC
3868 }
3869
3870 enabled pic && enable_weak_pic
3871
3872 check_cc <<EOF || die "Symbol mangling check failed."
3873 int ff_extern;
3874 EOF
3875 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3876 extern_prefix=${sym%%ff_extern*}
3877
3878 check_cc <<EOF && enable_weak inline_asm
3879 void foo(void) { __asm__ volatile ("" ::); }
3880 EOF
3881
3882 _restrict=
3883 for restrict_keyword in restrict __restrict__ __restrict; do
3884     check_cc <<EOF && _restrict=$restrict_keyword && break
3885 void foo(char * $restrict_keyword p);
3886 EOF
3887 done
3888
3889 check_cc <<EOF && enable pragma_deprecated
3890 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3891 EOF
3892
3893 check_cc <<EOF && enable attribute_packed
3894 struct { int x; } __attribute__((packed)) x;
3895 EOF
3896
3897 check_cc <<EOF && enable attribute_may_alias
3898 union { int x; } __attribute__((may_alias)) x;
3899 EOF
3900
3901 check_cc <<EOF || die "endian test failed"
3902 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3903 EOF
3904 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3905
3906 check_inline_asm inline_asm_labels '"1:\n"'
3907
3908 if enabled alpha; then
3909
3910     check_cflags -mieee
3911
3912 elif enabled arm; then
3913
3914     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3915 float func(float a, float b){ return a+b; }
3916 EOF
3917
3918     enabled thumb && check_cflags -mthumb || check_cflags -marm
3919     nogas=die
3920
3921     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3922         enable vfp_args
3923     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3924         case "${cross_prefix:-$cc}" in
3925             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3926             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3927 __asm__ (".eabi_attribute 28, 1");
3928 int main(void) { return 0; }
3929 EOF
3930         esac
3931         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3932     fi
3933
3934     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3935     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3936     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3937     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3938     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3939     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3940
3941     [ $target_os = linux ] ||
3942         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3943             $ARCH_EXT_LIST_ARM
3944
3945     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3946     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3947
3948     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3949
3950 elif enabled mips; then
3951
3952     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3953     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3954      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3955     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3956      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3957     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3958      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3959     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3960      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3961
3962 elif enabled parisc; then
3963
3964     if enabled gcc; then
3965         case $($cc -dumpversion) in
3966             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3967         esac
3968     fi
3969
3970 elif enabled ppc; then
3971
3972     enable local_aligned_8 local_aligned_16
3973
3974     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3975     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3976     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3977     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3978
3979     # AltiVec flags: The FSF version of GCC differs from the Apple version
3980     if enabled altivec; then
3981         if ! enabled_any pic ppc64; then
3982             nogas=warn
3983         fi
3984         check_cflags -maltivec -mabi=altivec &&
3985         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3986         check_cflags -faltivec
3987
3988         # check if our compiler supports Motorola AltiVec C API
3989         check_cc <<EOF || disable altivec
3990 $inc_altivec_h
3991 int main(void) {
3992     vector signed int v1 = (vector signed int) { 0 };
3993     vector signed int v2 = (vector signed int) { 1 };
3994     v1 = vec_add(v1, v2);
3995     return 0;
3996 }
3997 EOF
3998
3999         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4000     fi
4001
4002 elif enabled sparc; then
4003
4004     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4005
4006 elif enabled x86; then
4007
4008     check_builtin rdtsc    intrin.h   "__rdtsc()"
4009     check_builtin mm_empty mmintrin.h "_mm_empty()"
4010
4011     enable local_aligned_8 local_aligned_16
4012
4013     # check whether EBP is available on x86
4014     # As 'i' is stored on the stack, this program will crash
4015     # if the base pointer is used to access it because the
4016     # base pointer is cleared in the inline assembly code.
4017     check_exec_crash <<EOF && enable ebp_available
4018 volatile int i=0;
4019 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4020 return i;
4021 EOF
4022
4023     # check whether EBX is available on x86
4024     check_inline_asm ebx_available '""::"b"(0)' &&
4025         check_inline_asm ebx_available '"":::"%ebx"'
4026
4027     # check whether xmm clobbers are supported
4028     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4029
4030     # check whether binutils is new enough to compile SSSE3/MMXEXT
4031     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4032     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4033
4034     if ! disabled_any asm mmx yasm; then
4035         if check_cmd $yasmexe --version; then
4036             enabled x86_64 && yasm_extra="-m amd64"
4037             yasm_debug="-g dwarf2"
4038         elif check_cmd nasm -v; then
4039             yasmexe=nasm
4040             yasm_debug="-g -F dwarf"
4041             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4042         fi
4043
4044         YASMFLAGS="-f $objformat $yasm_extra"
4045         enabled pic               && append YASMFLAGS "-DPIC"
4046         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4047         case "$objformat" in
4048             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4049         esac
4050
4051         check_yasm "movbe ecx, [5]" && enable yasm ||
4052             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4053         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4054         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4055         check_yasm "CPU amdnop" && enable cpunop
4056     fi
4057
4058     case "$cpu" in
4059         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4060             disable fast_clz
4061         ;;
4062     esac
4063
4064 fi
4065
4066 if enabled asm; then
4067     as=${gas:=$as}
4068     check_as <<EOF && enable gnu_as || \
4069         $nogas "GNU assembler not found, install gas-preprocessor"
4070 .macro m n
4071 \n: .int 0
4072 .endm
4073 m x
4074 EOF
4075 fi
4076
4077 check_ldflags -Wl,--as-needed
4078
4079 if check_func dlopen; then
4080     ldl=
4081 elif check_func dlopen -ldl; then
4082     ldl=-ldl
4083 fi
4084
4085 if ! disabled network; then
4086     check_type "sys/types.h sys/socket.h" socklen_t
4087     check_type netdb.h "struct addrinfo"
4088     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4089     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4090     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4091     check_type netinet/in.h "struct sockaddr_in6"
4092     check_type poll.h "struct pollfd"
4093     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4094     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4095     check_type netinet/sctp.h "struct sctp_event_subscribe"
4096     check_func getaddrinfo $network_extralibs
4097     check_func getservbyport $network_extralibs
4098     # Prefer arpa/inet.h over winsock2
4099     if check_header arpa/inet.h ; then
4100         check_func closesocket
4101     elif check_header winsock2.h ; then
4102         check_func_headers winsock2.h closesocket -lws2 &&
4103             network_extralibs="-lws2" ||
4104         { check_func_headers winsock2.h closesocket -lws2_32 &&
4105             network_extralibs="-lws2_32"; }
4106         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4107         check_type ws2tcpip.h socklen_t
4108         check_type ws2tcpip.h "struct addrinfo"
4109         check_type ws2tcpip.h "struct group_source_req"
4110         check_type ws2tcpip.h "struct ip_mreq_source"
4111         check_type ws2tcpip.h "struct ipv6_mreq"
4112         check_type winsock2.h "struct pollfd"
4113         check_type ws2tcpip.h "struct sockaddr_in6"
4114         check_type ws2tcpip.h "struct sockaddr_storage"
4115         check_struct winsock2.h "struct sockaddr" sa_len
4116     else
4117         disable network
4118     fi
4119 fi
4120
4121 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4122 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4123
4124 check_func  access
4125 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4126 check_func  fcntl
4127 check_func  fork
4128 check_func_headers stdlib.h getenv
4129 check_func  gethrtime
4130 check_func  getopt
4131 check_func  getrusage
4132 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4133 check_func  gettimeofday
4134 check_func  inet_aton $network_extralibs
4135 check_func  isatty
4136 check_func  localtime_r
4137 check_func  ${malloc_prefix}memalign            && enable memalign
4138 check_func  mkstemp
4139 check_func  mmap
4140 check_func  mprotect
4141 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4142 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4143 check_func  setrlimit
4144 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4145 check_func  strerror_r
4146 check_func  sched_getaffinity
4147 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4148 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4149 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4150 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4151 check_builtin sarestart signal.h "SA_RESTART"
4152 check_func  sysconf
4153 check_func  sysctl
4154 check_func  usleep
4155 check_func_headers conio.h kbhit
4156 check_func_headers windows.h PeekNamedPipe
4157 check_func_headers io.h setmode
4158 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4159 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4160 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4161 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4162 check_func_headers windows.h GetProcessAffinityMask
4163 check_func_headers windows.h GetProcessTimes
4164 check_func_headers windows.h GetSystemTimeAsFileTime
4165 check_func_headers windows.h MapViewOfFile
4166 check_func_headers windows.h SetConsoleTextAttribute
4167 check_func_headers windows.h Sleep
4168 check_func_headers windows.h VirtualAlloc
4169 check_func_headers glob.h glob
4170 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4171
4172 check_header cl/cl.h
4173 check_header direct.h
4174 check_header dlfcn.h
4175 check_header dxva.h
4176 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4177 check_header io.h
4178 check_header libcrystalhd/libcrystalhd_if.h
4179 check_header malloc.h
4180 check_header poll.h
4181 check_header sys/mman.h
4182 check_header sys/param.h
4183 check_header sys/resource.h
4184 check_header sys/select.h
4185 check_header sys/time.h
4186 check_header sys/un.h
4187 check_header termios.h
4188 check_header unistd.h
4189 check_header vdpau/vdpau.h
4190 check_header vdpau/vdpau_x11.h
4191 check_header VideoDecodeAcceleration/VDADecoder.h
4192 check_header windows.h
4193 check_header X11/extensions/XvMClib.h
4194 check_header asm/types.h
4195
4196 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4197 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4198
4199 if ! disabled w32threads && ! enabled pthreads; then
4200     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4201 fi
4202
4203 # check for some common methods of building with pthread support
4204 # do this before the optional library checks as some of them require pthreads
4205 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4206     enable pthreads
4207     if check_func pthread_create; then
4208         :
4209     elif check_func pthread_create -pthread; then
4210         add_cflags -pthread
4211         add_extralibs -pthread
4212     elif check_func pthread_create -pthreads; then
4213         add_cflags -pthreads
4214         add_extralibs -pthreads
4215     elif check_func pthread_create -lpthreadGC2; then
4216         add_extralibs -lpthreadGC2
4217     elif ! check_lib pthread.h pthread_create -lpthread; then
4218         disable pthreads
4219     fi
4220 fi
4221
4222 for thread in $THREADS_LIST; do
4223     if enabled $thread; then
4224         test -n "$thread_type" &&
4225             die "ERROR: Only one thread type must be selected." ||
4226             thread_type="$thread"
4227     fi
4228 done
4229
4230 if enabled pthreads; then
4231   check_func pthread_cancel
4232 fi
4233
4234 enabled sync_val_compare_and_swap && enable atomics_gcc
4235 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4236 enabled MemoryBarrier && enable atomics_win32
4237
4238 check_lib math.h sin -lm && LIBM="-lm"
4239 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4240
4241 atan2f_args=2
4242 ldexpf_args=2
4243 powf_args=2
4244
4245 for func in $MATH_FUNCS; do
4246     eval check_mathfunc $func \${${func}_args:-1}
4247 done
4248
4249 # these are off by default, so fail if requested and not available
4250 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4251                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4252                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4253 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4254 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4255 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4256 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4257 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4258 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4259 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4260 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4261 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4262                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4263                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4264 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4265 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4266 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4267 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"
4268 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4269 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4270 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4271 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4272                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4273                                done || die "ERROR: libgsm not found"; }
4274 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4275 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4276 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4277 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4278 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4279 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4280 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4281 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4282                                check_lib openjpeg.h opj_version -lopenjpeg ||
4283                                die "ERROR: libopenjpeg not found"; }
4284 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4285 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4286 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4287 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4288 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4289 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4290 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4291 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4292 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4293 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4294     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4295     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4296 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4297 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4298                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4299                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4300 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4301 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4302 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4303 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4304 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4305 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4306 enabled libvpx            && {
4307     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4308                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4309     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 ||
4310                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4311     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4312     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4313 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4314 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4315                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4316                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4317 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4318 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4319 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4320 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4321 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4322                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4323                                die "ERROR: openal not found"; } &&
4324                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4325                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4326 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4327                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4328                                die "ERROR: opencl not found"; } &&
4329                              { ! enabled_any w32threads os2threads ||
4330                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4331                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4332                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4333                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4334 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4335                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4336                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4337                                die "ERROR: openssl not found"; }
4338
4339 if enabled gnutls; then
4340     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4341     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4342 fi
4343
4344 # libdc1394 check
4345 if enabled libdc1394; then
4346     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4347         enable libdc1394_2; } ||
4348     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4349         enable libdc1394_1; } ||
4350     die "ERROR: No version of libdc1394 found "
4351 fi
4352
4353 SDL_CONFIG="${cross_prefix}sdl-config"
4354 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4355     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4356     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4357     enable sdl
4358 else
4359   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4360     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4361     sdl_libs=$("${SDL_CONFIG}" --libs)
4362     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4363     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4364     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4365     enable sdl
4366   fi
4367 fi
4368 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4369
4370 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4371 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4372 perl --version > /dev/null 2>&1 && enable perl || disable perl
4373 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4374 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4375
4376 check_header linux/fb.h
4377 check_header linux/videodev.h
4378 check_header linux/videodev2.h
4379 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4380
4381 check_header sys/videoio.h
4382
4383 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4384 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4385 # w32api 3.12 had it defined wrong
4386 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4387
4388 check_type "dshow.h" IBaseFilter
4389
4390 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4391 { check_header dev/bktr/ioctl_meteor.h &&
4392   check_header dev/bktr/ioctl_bt848.h; } ||
4393 { check_header machine/ioctl_meteor.h &&
4394   check_header machine/ioctl_bt848.h; } ||
4395 { check_header dev/video/meteor/ioctl_meteor.h &&
4396   check_header dev/video/bktr/ioctl_bt848.h; } ||
4397 check_header dev/ic/bt8xx.h
4398
4399 check_header sndio.h
4400 if check_struct sys/soundcard.h audio_buf_info bytes; then
4401     enable_safe sys/soundcard.h
4402 else
4403     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4404     #include <sys/soundcard.h>
4405     audio_buf_info abc;
4406 EOF
4407 fi
4408 check_header soundcard.h
4409
4410 enabled_any alsa_indev alsa_outdev &&
4411     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4412
4413 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4414     check_func jack_port_get_latency_range -ljack
4415
4416 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4417
4418 if enabled libcdio; then
4419     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4420     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4421     die "ERROR: libcdio-paranoia not found"
4422 fi
4423
4424 enabled x11grab                                           &&
4425 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4426 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4427 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4428
4429 enabled vaapi &&
4430     check_lib va/va.h vaInitialize -lva ||
4431     disable vaapi
4432
4433 enabled vdpau &&
4434     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4435     disable vdpau
4436
4437 # Funny iconv installations are not unusual, so check it after all flags have been set
4438 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4439
4440 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4441
4442 # add some useful compiler flags if supported
4443 check_cflags -Wdeclaration-after-statement
4444 check_cflags -Wall
4445 check_cflags -Wdisabled-optimization
4446 check_cflags -Wpointer-arith
4447 check_cflags -Wredundant-decls
4448 check_cflags -Wwrite-strings
4449 check_cflags -Wtype-limits
4450 check_cflags -Wundef
4451 check_cflags -Wmissing-prototypes
4452 check_cflags -Wno-pointer-to-int-cast
4453 check_cflags -Wstrict-prototypes
4454 enabled extra_warnings && check_cflags -Winline
4455
4456 check_disable_warning(){
4457     warning_flag=-W${1#-Wno-}
4458     test_cflags $warning_flag && add_cflags $1
4459 }
4460
4461 check_disable_warning -Wno-parentheses
4462 check_disable_warning -Wno-switch
4463 check_disable_warning -Wno-format-zero-length
4464 check_disable_warning -Wno-pointer-sign
4465
4466 # add some linker flags
4467 check_ldflags -Wl,--warn-common
4468 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4469 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4470
4471 enabled xmm_clobber_test &&
4472     check_ldflags -Wl,--wrap,avcodec_open2              \
4473                   -Wl,--wrap,avcodec_decode_audio4      \
4474                   -Wl,--wrap,avcodec_decode_video2      \
4475                   -Wl,--wrap,avcodec_decode_subtitle2   \
4476                   -Wl,--wrap,avcodec_encode_audio2      \
4477                   -Wl,--wrap,avcodec_encode_video       \
4478                   -Wl,--wrap,avcodec_encode_video2      \
4479                   -Wl,--wrap,avcodec_encode_subtitle    \
4480                   -Wl,--wrap,sws_scale ||
4481     disable xmm_clobber_test
4482
4483 echo "X{};" > $TMPV
4484 if test_ldflags -Wl,--version-script,$TMPV; then
4485     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4486     check_cc <<EOF && enable symver_asm_label
4487 void ff_foo(void) __asm__ ("av_foo@VERSION");
4488 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4489 EOF
4490     check_cc <<EOF && enable symver_gnu_asm
4491 __asm__(".symver ff_foo,av_foo@VERSION");
4492 void ff_foo(void) {}
4493 EOF
4494 fi
4495
4496 if [ -z "$optflags" ]; then
4497     if enabled small; then
4498         optflags=$cflags_size
4499     elif enabled optimizations; then
4500         optflags=$cflags_speed
4501     else
4502         optflags=$cflags_noopt
4503     fi
4504 fi
4505
4506 check_optflags(){
4507     check_cflags "$@"
4508     enabled lto && check_ldflags "$@"
4509 }
4510
4511
4512 if enabled lto; then
4513     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4514     check_cflags  -flto
4515     check_ldflags -flto $cpuflags
4516 fi
4517
4518 check_optflags $optflags
4519 check_optflags -fno-math-errno
4520 check_optflags -fno-signed-zeros
4521
4522 enabled ftrapv && check_cflags -ftrapv
4523
4524 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4525 int x;
4526 EOF
4527
4528
4529 if enabled icc; then
4530     # Just warnings, no remarks
4531     check_cflags -w1
4532     # -wd: Disable following warnings
4533     # 144, 167, 556: -Wno-pointer-sign
4534     # 188: enumerated type mixed with another type
4535     # 1292: attribute "foo" ignored
4536     # 1419: external declaration in primary source file
4537     # 10006: ignoring unknown option -fno-signed-zeros
4538     # 10148: ignoring unknown option -Wno-parentheses
4539     # 10156: ignoring option '-W'; no argument required
4540     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4541     # 11030: Warning unknown option --as-needed
4542     # 10156: ignoring option '-export'; no argument required
4543     check_ldflags -wd10156,11030
4544     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4545     enable ebp_available
4546     if enabled x86_32; then
4547         icc_version=$($cc -dumpversion)
4548         test ${icc_version%%.*} -ge 11 &&
4549             check_cflags -falign-stack=maintain-16-byte ||
4550             disable aligned_stack
4551     fi
4552 elif enabled ccc; then
4553     # disable some annoying warnings
4554     add_cflags -msg_disable bitnotint
4555     add_cflags -msg_disable mixfuncvoid
4556     add_cflags -msg_disable nonstandcast
4557     add_cflags -msg_disable unsupieee
4558 elif enabled gcc; then
4559     check_optflags -fno-tree-vectorize
4560     check_cflags -Werror=implicit-function-declaration
4561     check_cflags -Werror=missing-prototypes
4562     check_cflags -Werror=return-type
4563     check_cflags -Werror=vla
4564     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4565 elif enabled llvm_gcc; then
4566     check_cflags -mllvm -stack-alignment=16
4567 elif enabled clang; then
4568     check_cflags -mllvm -stack-alignment=16
4569     check_cflags -Qunused-arguments
4570     check_cflags -Werror=implicit-function-declaration
4571     check_cflags -Werror=missing-prototypes
4572     check_cflags -Werror=return-type
4573 elif enabled cparser; then
4574     add_cflags -Wno-missing-variable-declarations
4575     add_cflags -Wno-empty-statement
4576 elif enabled armcc; then
4577     # 2523: use of inline assembler is deprecated
4578     add_cflags -W${armcc_opt},--diag_suppress=2523
4579     add_cflags -W${armcc_opt},--diag_suppress=1207
4580     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4581     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4582     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4583     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4584 elif enabled tms470; then
4585     add_cflags -pds=824 -pds=837
4586 elif enabled pathscale; then
4587     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4588 elif enabled_any msvc icl; then
4589     enabled x86_32 && disable aligned_stack
4590     enabled_all x86_32 debug && add_cflags -Oy-
4591     enabled debug && add_ldflags -debug
4592     enable pragma_deprecated
4593     if enabled icl; then
4594         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4595         # (correctly) on icl 13.x.
4596         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4597             add_cflags -Qansi-alias
4598         # icl will pass the inline asm tests but inline asm is currently
4599         # not supported (build will fail)
4600         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4601         disable inline_asm
4602     fi
4603 fi
4604
4605 case $target_os in
4606     osf1)
4607         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4608     ;;
4609     plan9)
4610         add_cppflags -Dmain=plan9_main
4611     ;;
4612 esac
4613
4614 enable frame_thread_encoder
4615 enabled_any $THREADS_LIST      && enable threads
4616 enabled_any $ATOMICS_LIST      && enable atomics_native
4617
4618 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"
4619
4620 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4621
4622 check_deps $CONFIG_LIST       \
4623            $CONFIG_EXTRA      \
4624            $HAVE_LIST         \
4625            $ALL_COMPONENTS    \
4626
4627
4628 if test $target_os = "haiku"; then
4629     disable memalign
4630     disable posix_memalign
4631 fi
4632
4633 ! enabled_any memalign posix_memalign aligned_malloc &&
4634     enabled_any $need_memalign && enable memalign_hack
4635
4636 # add_dep lib dep
4637 # -> enable ${lib}_deps_${dep}
4638 # -> add $dep to ${lib}_deps only once
4639 add_dep() {
4640     lib=$1
4641     dep=$2
4642     enabled "${lib}_deps_${dep}" && return 0
4643     enable  "${lib}_deps_${dep}"
4644     prepend "${lib}_deps" $dep
4645 }
4646
4647 # merge deps lib components
4648 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4649 merge_deps() {
4650     lib=$1
4651     shift
4652     for comp in $*; do
4653         enabled $comp || continue
4654         eval "dep=\"\$${comp}_deps\""
4655         for d in $dep; do
4656             add_dep $lib $d
4657         done
4658     done
4659 }
4660
4661 merge_deps libavfilter $FILTER_LIST
4662
4663 echo "install prefix            $prefix"
4664 echo "source path               $source_path"
4665 echo "C compiler                $cc"
4666 echo "ARCH                      $arch ($cpu)"
4667 if test "$build_suffix" != ""; then
4668     echo "build suffix              $build_suffix"
4669 fi
4670 if test "$progs_suffix" != ""; then
4671     echo "progs suffix              $progs_suffix"
4672 fi
4673 if test "$extra_version" != ""; then
4674     echo "version string suffix     $extra_version"
4675 fi
4676 echo "big-endian                ${bigendian-no}"
4677 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4678 if enabled x86; then
4679     echo "${yasmexe}                      ${yasm-no}"
4680     echo "MMX enabled               ${mmx-no}"
4681     echo "MMXEXT enabled            ${mmxext-no}"
4682     echo "3DNow! enabled            ${amd3dnow-no}"
4683     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4684     echo "SSE enabled               ${sse-no}"
4685     echo "SSSE3 enabled             ${ssse3-no}"
4686     echo "AVX enabled               ${avx-no}"
4687     echo "FMA4 enabled              ${fma4-no}"
4688     echo "i686 features enabled     ${i686-no}"
4689     echo "CMOV is fast              ${fast_cmov-no}"
4690     echo "EBX available             ${ebx_available-no}"
4691     echo "EBP available             ${ebp_available-no}"
4692 fi
4693 if enabled arm; then
4694     echo "ARMv5TE enabled           ${armv5te-no}"
4695     echo "ARMv6 enabled             ${armv6-no}"
4696     echo "ARMv6T2 enabled           ${armv6t2-no}"
4697     echo "VFP enabled               ${vfp-no}"
4698     echo "NEON enabled              ${neon-no}"
4699     echo "THUMB enabled             ${thumb-no}"
4700 fi
4701 if enabled mips; then
4702     echo "MIPS FPU enabled          ${mipsfpu-no}"
4703     echo "MIPS32R2 enabled          ${mips32r2-no}"
4704     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4705     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4706 fi
4707 if enabled ppc; then
4708     echo "AltiVec enabled           ${altivec-no}"
4709     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4710     echo "dcbzl available           ${dcbzl-no}"
4711 fi
4712 if enabled sparc; then
4713     echo "VIS enabled               ${vis-no}"
4714 fi
4715 echo "debug symbols             ${debug-no}"
4716 echo "strip symbols             ${stripping-no}"
4717 echo "optimize for size         ${small-no}"
4718 echo "optimizations             ${optimizations-no}"
4719 echo "static                    ${static-no}"
4720 echo "shared                    ${shared-no}"
4721 echo "postprocessing support    ${postproc-no}"
4722 echo "new filter support        ${avfilter-no}"
4723 echo "network support           ${network-no}"
4724 echo "threading support         ${thread_type-no}"
4725 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4726 echo "SDL support               ${sdl-no}"
4727 echo "opencl enabled            ${opencl-no}"
4728 echo "libzvbi enabled           ${libzvbi-no}"
4729 echo "texi2html enabled         ${texi2html-no}"
4730 echo "perl enabled              ${perl-no}"
4731 echo "pod2man enabled           ${pod2man-no}"
4732 echo "makeinfo enabled          ${makeinfo-no}"
4733 test -n "$random_seed" &&
4734     echo "random seed               ${random_seed}"
4735 echo
4736
4737 echo "External libraries:"
4738 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4739 echo
4740
4741 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4742     echo "Enabled ${type}s:"
4743     eval list=\$$(toupper $type)_LIST
4744     print_enabled '_*' $list | print_3_columns
4745     echo
4746 done
4747
4748 license="LGPL version 2.1 or later"
4749 if enabled nonfree; then
4750     license="nonfree and unredistributable"
4751 elif enabled gplv3; then
4752     license="GPL version 3 or later"
4753 elif enabled lgplv3; then
4754     license="LGPL version 3 or later"
4755 elif enabled gpl; then
4756     license="GPL version 2 or later"
4757 fi
4758
4759 echo "License: $license"
4760
4761 echo "Creating config.mak, config.h, and doc/config.texi..."
4762
4763 test -e Makefile || $ln_s "$source_path/Makefile" .
4764
4765 enabled stripping || strip="echo skipping strip"
4766
4767 config_files="$TMPH config.mak doc/config.texi"
4768
4769 cat > config.mak <<EOF
4770 # Automatically generated by configure - do not modify!
4771 ifndef FFMPEG_CONFIG_MAK
4772 FFMPEG_CONFIG_MAK=1
4773 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4774 prefix=$prefix
4775 LIBDIR=\$(DESTDIR)$libdir
4776 SHLIBDIR=\$(DESTDIR)$shlibdir
4777 INCDIR=\$(DESTDIR)$incdir
4778 BINDIR=\$(DESTDIR)$bindir
4779 DATADIR=\$(DESTDIR)$datadir
4780 DOCDIR=\$(DESTDIR)$docdir
4781 MANDIR=\$(DESTDIR)$mandir
4782 SRC_PATH=$source_path
4783 ifndef MAIN_MAKEFILE
4784 SRC_PATH:=\$(SRC_PATH:.%=..%)
4785 endif
4786 CC_IDENT=$cc_ident
4787 ARCH=$arch
4788 CC=$cc
4789 CXX=$cxx
4790 AS=$as
4791 LD=$ld
4792 DEPCC=$dep_cc
4793 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4794 DEPAS=$as
4795 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4796 YASM=$yasmexe
4797 DEPYASM=$yasmexe
4798 AR=$ar
4799 ARFLAGS=$arflags
4800 AR_O=$ar_o
4801 RANLIB=$ranlib
4802 STRIP=$strip
4803 CP=cp -p
4804 LN_S=$ln_s
4805 CPPFLAGS=$CPPFLAGS
4806 CFLAGS=$CFLAGS
4807 CXXFLAGS=$CXXFLAGS
4808 ASFLAGS=$ASFLAGS
4809 AS_C=$AS_C
4810 AS_O=$AS_O
4811 CC_C=$CC_C
4812 CC_E=$CC_E
4813 CC_O=$CC_O
4814 CXX_C=$CXX_C
4815 CXX_O=$CXX_O
4816 LD_O=$LD_O
4817 LD_LIB=$LD_LIB
4818 LD_PATH=$LD_PATH
4819 DLLTOOL=$dlltool
4820 LDFLAGS=$LDFLAGS
4821 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4822 YASMFLAGS=$YASMFLAGS
4823 BUILDSUF=$build_suffix
4824 PROGSSUF=$progs_suffix
4825 FULLNAME=$FULLNAME
4826 LIBPREF=$LIBPREF
4827 LIBSUF=$LIBSUF
4828 LIBNAME=$LIBNAME
4829 SLIBPREF=$SLIBPREF
4830 SLIBSUF=$SLIBSUF
4831 EXESUF=$EXESUF
4832 EXTRA_VERSION=$extra_version
4833 CCDEP=$CCDEP
4834 CXXDEP=$CXXDEP
4835 CCDEP_FLAGS=$CCDEP_FLAGS
4836 ASDEP=$ASDEP
4837 ASDEP_FLAGS=$ASDEP_FLAGS
4838 CC_DEPFLAGS=$CC_DEPFLAGS
4839 AS_DEPFLAGS=$AS_DEPFLAGS
4840 HOSTCC=$host_cc
4841 HOSTLD=$host_ld
4842 HOSTCFLAGS=$host_cflags
4843 HOSTCPPFLAGS=$host_cppflags
4844 HOSTEXESUF=$HOSTEXESUF
4845 HOSTLDFLAGS=$host_ldflags
4846 HOSTLIBS=$host_libs
4847 DEPHOSTCC=$host_cc
4848 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4849 HOSTCCDEP=$HOSTCCDEP
4850 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4851 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4852 HOSTCC_C=$HOSTCC_C
4853 HOSTCC_O=$HOSTCC_O
4854 HOSTLD_O=$HOSTLD_O
4855 TARGET_EXEC=$target_exec $target_exec_args
4856 TARGET_PATH=$target_path
4857 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4858 LIBS-ffplay=$sdl_libs
4859 CFLAGS-ffplay=$sdl_cflags
4860 ZLIB=$($ldflags_filter -lz)
4861 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4862 EXTRALIBS=$extralibs
4863 COMPAT_OBJS=$compat_objs
4864 EXEOBJS=$exeobjs
4865 INSTALL=$install
4866 LIBTARGET=${LIBTARGET}
4867 SLIBNAME=${SLIBNAME}
4868 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4869 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4870 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4871 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4872 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4873 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4874 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4875 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4876 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4877 NOREDZONE_FLAGS=$noredzone_flags
4878 EOF
4879
4880 get_version(){
4881     lcname=lib${1}
4882     name=$(toupper $lcname)
4883     file=$source_path/$lcname/version.h
4884     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4885     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4886     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4887     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4888     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4889 }
4890
4891 map 'get_version $v' $LIBRARY_LIST
4892
4893 cat > $TMPH <<EOF
4894 /* Automatically generated by configure - do not modify! */
4895 #ifndef FFMPEG_CONFIG_H
4896 #define FFMPEG_CONFIG_H
4897 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4898 #define FFMPEG_LICENSE "$(c_escape $license)"
4899 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4900 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4901 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4902 #define av_restrict $_restrict
4903 #define EXTERN_PREFIX "${extern_prefix}"
4904 #define EXTERN_ASM ${extern_prefix}
4905 #define SLIBSUF "$SLIBSUF"
4906 #define HAVE_MMX2 HAVE_MMXEXT
4907 EOF
4908
4909 test -n "$assert_level" &&
4910     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4911
4912 test -n "$malloc_prefix" &&
4913     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4914
4915 if enabled yasm; then
4916     append config_files $TMPASM
4917     printf '' >$TMPASM
4918 fi
4919
4920 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4921
4922
4923 mkdir -p doc
4924 echo "@c auto-generated by configure" > doc/config.texi
4925
4926 print_config ARCH_   "$config_files" $ARCH_LIST
4927 print_config HAVE_   "$config_files" $HAVE_LIST
4928 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4929                                      $CONFIG_EXTRA      \
4930                                      $ALL_COMPONENTS    \
4931
4932 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4933 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4934
4935 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4936 cp_if_changed $TMPH config.h
4937 touch .config
4938
4939 enabled yasm && cp_if_changed $TMPASM config.asm
4940
4941 cat > $TMPH <<EOF
4942 /* Generated by ffconf */
4943 #ifndef AVUTIL_AVCONFIG_H
4944 #define AVUTIL_AVCONFIG_H
4945 EOF
4946
4947 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4948
4949 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4950
4951 cp_if_changed $TMPH libavutil/avconfig.h
4952
4953 if test -n "$WARNINGS"; then
4954     printf "\n$WARNINGS"
4955     enabled fatal_warnings && exit 1
4956 fi
4957
4958 # build pkg-config files
4959
4960 pkgconfig_generate(){
4961     name=$1
4962     shortname=${name#lib}${build_suffix}
4963     comment=$2
4964     version=$3
4965     libs=$4
4966     requires=$5
4967     enabled ${name#lib} || return 0
4968     mkdir -p $name
4969     cat <<EOF > $name/$name${build_suffix}.pc
4970 prefix=$prefix
4971 exec_prefix=\${prefix}
4972 libdir=$libdir
4973 includedir=$incdir
4974
4975 Name: $name
4976 Description: $comment
4977 Version: $version
4978 Requires: $(enabled shared || echo $requires)
4979 Requires.private: $(enabled shared && echo $requires)
4980 Conflicts:
4981 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4982 Libs.private: $(enabled shared && echo $libs)
4983 Cflags: -I\${includedir}
4984 EOF
4985
4986 mkdir -p doc/examples/pc-uninstalled
4987 includedir=${source_path}
4988 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4989     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4990 prefix=
4991 exec_prefix=
4992 libdir=\${pcfiledir}/../../../$name
4993 includedir=${includedir}
4994
4995 Name: $name
4996 Description: $comment
4997 Version: $version
4998 Requires: $requires
4999 Conflicts:
5000 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5001 Cflags: -I\${includedir}
5002 EOF
5003 }
5004
5005 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5006 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5007 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5008 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5009 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5010 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5011 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5012 lavfi_libs=${lavfi_libs%, }
5013
5014 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5015 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5016
5017 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5018 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5019 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5020 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5021 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5022 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5023 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5024 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5025 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5026
5027 fix_ffmpeg_remote(){
5028     git_remote_from=$1
5029     git_remote_to=$2
5030     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5031     if [ "$fixme_remote" != "" ]; then
5032         echolog "
5033 Outdated domain in git config, the official domain for ffmpeg git is since
5034 November 2011, source.ffmpeg.org, both the old and the new point to the same
5035 repository and server. To update it enter the following commands:
5036 "
5037         for remote in $fixme_remote; do
5038             echolog "git remote set-url $remote $git_remote_to"
5039         done
5040     fi
5041 }
5042
5043 if test -f "$source_path/.git/config"; then
5044     remote_from=git.videolan.org
5045     remote_to=source.ffmpeg.org
5046     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5047     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5048 fi