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   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147
 148 Hardware accelerators:
 149   --disable-dxva2          disable DXVA2 code [autodetect]
 150   --disable-vaapi          disable VAAPI code [autodetect]
 151   --enable-vda             enable VDA code
 152   --disable-vdpau          disable VDPAU code [autodetect]
 153
 154 Individual component options:
 155   --disable-everything     disable all components listed below
 156   --disable-encoder=NAME   disable encoder NAME
 157   --enable-encoder=NAME    enable encoder NAME
 158   --disable-encoders       disable all encoders
 159   --disable-decoder=NAME   disable decoder NAME
 160   --enable-decoder=NAME    enable decoder NAME
 161   --disable-decoders       disable all decoders
 162   --disable-hwaccel=NAME   disable hwaccel NAME
 163   --enable-hwaccel=NAME    enable hwaccel NAME
 164   --disable-hwaccels       disable all hwaccels
 165   --disable-muxer=NAME     disable muxer NAME
 166   --enable-muxer=NAME      enable muxer NAME
 167   --disable-muxers         disable all muxers
 168   --disable-demuxer=NAME   disable demuxer NAME
 169   --enable-demuxer=NAME    enable demuxer NAME
 170   --disable-demuxers       disable all demuxers
 171   --enable-parser=NAME     enable parser NAME
 172   --disable-parser=NAME    disable parser NAME
 173   --disable-parsers        disable all parsers
 174   --enable-bsf=NAME        enable bitstream filter NAME
 175   --disable-bsf=NAME       disable bitstream filter NAME
 176   --disable-bsfs           disable all bitstream filters
 177   --enable-protocol=NAME   enable protocol NAME
 178   --disable-protocol=NAME  disable protocol NAME
 179   --disable-protocols      disable all protocols
 180   --enable-indev=NAME      enable input device NAME
 181   --disable-indev=NAME     disable input device NAME
 182   --disable-indevs         disable input devices
 183   --enable-outdev=NAME     enable output device NAME
 184   --disable-outdev=NAME    disable output device NAME
 185   --disable-outdevs        disable output devices
 186   --disable-devices        disable all devices
 187   --enable-filter=NAME     enable filter NAME
 188   --disable-filter=NAME    disable filter NAME
 189   --disable-filters        disable all filters
 190
 191 External library support:
 192   --enable-avisynth        enable reading of AviSynth script files [no]
 193   --disable-bzlib          disable bzlib [autodetect]
 194   --enable-fontconfig      enable fontconfig
 195   --enable-frei0r          enable frei0r video filtering
 196   --enable-gnutls          enable gnutls [no]
 197   --disable-iconv          disable iconv [autodetect]
 198   --enable-ladspa          enable LADSPA audio filtering
 199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 200   --enable-libass          enable libass subtitles rendering [no]
 201   --enable-libbluray       enable BluRay reading using libbluray [no]
 202   --enable-libcaca         enable textual display using libcaca
 203   --enable-libcelt         enable CELT decoding via libcelt [no]
 204   --enable-libcdio         enable audio CD grabbing with libcdio
 205   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 206                            and libraw1394 [no]
 207   --enable-libfaac         enable AAC encoding via libfaac [no]
 208   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 209   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 210   --enable-libfreetype     enable libfreetype [no]
 211   --enable-libgme          enable Game Music Emu via libgme [no]
 212   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 213   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 214   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 215   --enable-libmodplug      enable ModPlug via libmodplug [no]
 216   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 217   --enable-libnut          enable NUT (de)muxing via libnut,
 218                            native (de)muxer exists [no]
 219   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 220   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 221   --enable-libopencv       enable video filtering via libopencv [no]
 222   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 223   --enable-libopus         enable Opus decoding via libopus [no]
 224   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 225   --enable-libquvi         enable quvi input via libquvi [no]
 226   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 227   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 228   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 229   --enable-libsoxr         enable Include libsoxr resampling [no]
 230   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 231   --enable-libssh          enable SFTP protocol via libssh [no]
 232   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 233   --enable-libtheora       enable Theora encoding via libtheora [no]
 234   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 235   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 236   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 237   --enable-libvidstab      enable video stabilization using vid.stab [no]
 238   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 239   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 240   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 241                            native implementation exists [no]
 242   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 243   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 244   --enable-libx264         enable H.264 encoding via x264 [no]
 245   --enable-libxavs         enable AVS encoding via xavs [no]
 246   --enable-libxvid         enable Xvid encoding via xvidcore,
 247                            native MPEG-4/Xvid encoder exists [no]
 248   --enable-libzmq          enable message passing via libzmq [no]
 249   --enable-libzvbi         enable teletext support via libzvbi [no]
 250   --enable-openal          enable OpenAL 1.1 capture support [no]
 251   --enable-opencl          enable OpenCL code
 252   --enable-openssl         enable openssl [no]
 253   --enable-x11grab         enable X11 grabbing [no]
 254   --disable-zlib           disable zlib [autodetect]
 255
 256 Advanced options (experts only):
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 266   --toolchain=NAME         set tool defaults according to NAME
 267   --nm=NM                  use nm tool NM [$nm_default]
 268   --ar=AR                  use archive tool AR [$ar_default]
 269   --as=AS                  use assembler AS [$as_default]
 270   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 271   --cc=CC                  use C compiler CC [$cc_default]
 272   --cxx=CXX                use C compiler CXX [$cxx_default]
 273   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 274   --ld=LD                  use linker LD [$ld_default]
 275   --host-cc=HOSTCC         use host C compiler HOSTCC
 276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 278   --host-ld=HOSTLD         use host linker HOSTLD
 279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 280   --host-libs=HLIBS        use libs HLIBS when linking for host
 281   --host-os=OS             compiler host OS [$target_os]
 282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 283   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 285   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 286   --extra-version=STRING   version string suffix []
 287   --optflags=OPTFLAGS      override optimization-related compiler flags
 288   --build-suffix=SUFFIX    library name suffix []
 289   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 290   --progs-suffix=SUFFIX    program name suffix []
 291   --arch=ARCH              select architecture [$arch]
 292   --cpu=CPU                select the minimum required CPU (affects
 293                            instruction selection, may crash on older CPUs)
 294   --enable-pic             build position-independent code
 295   --enable-sram            allow use of on-chip SRAM
 296   --enable-thumb           compile for Thumb instruction set
 297   --disable-symver         disable symbol versioning
 298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 299   --disable-safe-bitstream-reader
 300                            disable buffer boundary checking in bitreaders
 301                            (faster, but may crash)
 302   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 303   --enable-lto             use link-time optimization
 304
 305 Optimization options (experts only):
 306   --disable-asm            disable all assembler optimizations
 307   --disable-altivec        disable AltiVec optimizations
 308   --disable-amd3dnow       disable 3DNow! optimizations
 309   --disable-amd3dnowext    disable 3DNow! extended optimizations
 310   --disable-mmx            disable MMX optimizations
 311   --disable-mmxext         disable MMXEXT optimizations
 312   --disable-sse            disable SSE optimizations
 313   --disable-sse2           disable SSE2 optimizations
 314   --disable-sse3           disable SSE3 optimizations
 315   --disable-ssse3          disable SSSE3 optimizations
 316   --disable-sse4           disable SSE4 optimizations
 317   --disable-sse42          disable SSE4.2 optimizations
 318   --disable-avx            disable AVX optimizations
 319   --disable-fma4           disable FMA4 optimizations
 320   --disable-avx2           disable AVX2 optimizations
 321   --disable-armv5te        disable armv5te optimizations
 322   --disable-armv6          disable armv6 optimizations
 323   --disable-armv6t2        disable armv6t2 optimizations
 324   --disable-vfp            disable VFP optimizations
 325   --disable-neon           disable NEON optimizations
 326   --disable-vis            disable VIS optimizations
 327   --disable-inline-asm     disable use of inline assembler
 328   --disable-yasm           disable use of yasm assembler
 329   --disable-mips32r2       disable MIPS32R2 optimizations
 330   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 331   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 332   --disable-mipsfpu        disable floating point MIPS optimizations
 333   --disable-fast-unaligned consider unaligned accesses slow
 334
 335 Developer options (useful when working on FFmpeg itself):
 336   --disable-debug          disable debugging symbols
 337   --enable-debug=LEVEL     set the debug level [$debuglevel]
 338   --disable-optimizations  disable compiler optimizations
 339   --enable-extra-warnings  enable more compiler warnings
 340   --disable-stripping      disable stripping of executables and shared libraries
 341   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 342                            2 causes a slowdown at runtime.
 343   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 344   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 345                            leaks and errors, using the specified valgrind binary.
 346                            Cannot be combined with --target-exec
 347   --enable-ftrapv          Trap arithmetic overflows
 348   --samples=PATH           location of test samples for FATE, if not set use
 349                            \$FATE_SAMPLES at make invocation time.
 350   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 351                            should be used only for debugging purposes)
 352   --enable-random          randomly enable/disable components
 353   --disable-random
 354   --enable-random=LIST     randomly enable/disable specific components or
 355   --disable-random=LIST    component groups. LIST is a comma-separated list
 356                            of NAME[:PROB] entries where NAME is a component
 357                            (group) and PROB the probability associated with
 358                            NAME (default 0.5).
 359   --random-seed=VALUE      seed value for --enable/disable-random
 360
 361 NOTE: Object files are built at the place where configure is launched.
 362 EOF
 363   exit 0
 364 }
 365
 366 quotes='""'
 367
 368 log(){
 369     echo "$@" >> $logfile
 370 }
 371
 372 log_file(){
 373     log BEGIN $1
 374     pr -n -t $1 >> $logfile
 375     log END $1
 376 }
 377
 378 echolog(){
 379     log "$@"
 380     echo "$@"
 381 }
 382
 383 warn(){
 384     log "WARNING: $*"
 385     WARNINGS="${WARNINGS}WARNING: $*\n"
 386 }
 387
 388 die(){
 389     echolog "$@"
 390     cat <<EOF
 391
 392 If you think configure made a mistake, make sure you are using the latest
 393 version from Git.  If the latest version fails, report the problem to the
 394 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 395 EOF
 396     if disabled logging; then
 397         cat <<EOF
 398 Rerun configure with logging enabled (do not use --disable-logging), and
 399 include the log this produces with your report.
 400 EOF
 401     else
 402         cat <<EOF
 403 Include the log file "$logfile" produced by configure as this will help
 404 solving the problem.
 405 EOF
 406     fi
 407     exit 1
 408 }
 409
 410 # Avoid locale weirdness, besides we really just want to translate ASCII.
 411 toupper(){
 412     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 413 }
 414
 415 tolower(){
 416     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 417 }
 418
 419 c_escape(){
 420     echo "$*" | sed 's/["\\]/\\\0/g'
 421 }
 422
 423 sh_quote(){
 424     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 425     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 426     echo "$v"
 427 }
 428
 429 cleanws(){
 430     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 431 }
 432
 433 filter(){
 434     pat=$1
 435     shift
 436     for v; do
 437         eval "case $v in $pat) echo $v ;; esac"
 438     done
 439 }
 440
 441 filter_out(){
 442     pat=$1
 443     shift
 444     for v; do
 445         eval "case $v in $pat) ;; *) echo $v ;; esac"
 446     done
 447 }
 448
 449 map(){
 450     m=$1
 451     shift
 452     for v; do eval $m; done
 453 }
 454
 455 add_suffix(){
 456     suffix=$1
 457     shift
 458     for v; do echo ${v}${suffix}; done
 459 }
 460
 461 set_all(){
 462     value=$1
 463     shift
 464     for var in $*; do
 465         eval $var=$value
 466     done
 467 }
 468
 469 set_weak(){
 470     value=$1
 471     shift
 472     for var; do
 473         eval : \${$var:=$value}
 474     done
 475 }
 476
 477 sanitize_var_name(){
 478     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 479 }
 480
 481 set_safe(){
 482     var=$1
 483     shift
 484     eval $(sanitize_var_name "$var")='$*'
 485 }
 486
 487 get_safe(){
 488     eval echo \$$(sanitize_var_name "$1")
 489 }
 490
 491 pushvar(){
 492     for pvar in $*; do
 493         eval level=\${${pvar}_level:=0}
 494         eval ${pvar}_${level}="\$$pvar"
 495         eval ${pvar}_level=$(($level+1))
 496     done
 497 }
 498
 499 popvar(){
 500     for pvar in $*; do
 501         eval level=\${${pvar}_level:-0}
 502         test $level = 0 && continue
 503         eval level=$(($level-1))
 504         eval $pvar="\${${pvar}_${level}}"
 505         eval ${pvar}_level=$level
 506         eval unset ${pvar}_${level}
 507     done
 508 }
 509
 510 enable(){
 511     set_all yes $*
 512 }
 513
 514 disable(){
 515     set_all no $*
 516 }
 517
 518 enable_weak(){
 519     set_weak yes $*
 520 }
 521
 522 disable_weak(){
 523     set_weak no $*
 524 }
 525
 526 enable_safe(){
 527     for var; do
 528         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 529     done
 530 }
 531
 532 disable_safe(){
 533     for var; do
 534         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 535     done
 536 }
 537
 538 do_enable_deep(){
 539     for var; do
 540         enabled $var && continue
 541         eval sel="\$${var}_select"
 542         eval sgs="\$${var}_suggest"
 543         pushvar var sgs
 544         enable_deep $sel
 545         popvar sgs
 546         enable_deep_weak $sgs
 547         popvar var
 548     done
 549 }
 550
 551 enable_deep(){
 552     do_enable_deep $*
 553     enable $*
 554 }
 555
 556 enable_deep_weak(){
 557     for var; do
 558         disabled $var && continue
 559         pushvar var
 560         do_enable_deep $var
 561         popvar var
 562         enable_weak $var
 563     done
 564 }
 565
 566 enabled(){
 567     test "${1#!}" = "$1" && op== || op=!=
 568     eval test "x\$${1#!}" $op "xyes"
 569 }
 570
 571 disabled(){
 572     test "${1#!}" = "$1" && op== || op=!=
 573     eval test "x\$${1#!}" $op "xno"
 574 }
 575
 576 enabled_all(){
 577     for opt; do
 578         enabled $opt || return 1
 579     done
 580 }
 581
 582 disabled_all(){
 583     for opt; do
 584         disabled $opt || return 1
 585     done
 586 }
 587
 588 enabled_any(){
 589     for opt; do
 590         enabled $opt && return 0
 591     done
 592 }
 593
 594 disabled_any(){
 595     for opt; do
 596         disabled $opt && return 0
 597     done
 598     return 1
 599 }
 600
 601 set_default(){
 602     for opt; do
 603         eval : \${$opt:=\$${opt}_default}
 604     done
 605 }
 606
 607 is_in(){
 608     value=$1
 609     shift
 610     for var in $*; do
 611         [ $var = $value ] && return 0
 612     done
 613     return 1
 614 }
 615
 616 do_check_deps(){
 617     for cfg; do
 618         cfg="${cfg#!}"
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622         append allopts $cfg
 623
 624         eval dep_all="\$${cfg}_deps"
 625         eval dep_any="\$${cfg}_deps_any"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 632         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_any $dep_sel && disable $cfg
 640
 641         if enabled $cfg; then
 642             enable_deep $dep_sel
 643             enable_deep_weak $dep_sgs
 644         fi
 645
 646         disable ${cfg}_checking
 647     done
 648 }
 649
 650 check_deps(){
 651     unset allopts
 652
 653     do_check_deps "$@"
 654
 655     for cfg in $allopts; do
 656         enabled $cfg || continue
 657         eval dep_extralibs="\$${cfg}_extralibs"
 658         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 659     done
 660 }
 661
 662 print_config(){
 663     pfx=$1
 664     files=$2
 665     shift 2
 666     map 'eval echo "$v \${$v:-no}"' "$@" |
 667     awk "BEGIN { split(\"$files\", files) }
 668         {
 669             c = \"$pfx\" toupper(\$1);
 670             v = \$2;
 671             sub(/yes/, 1, v);
 672             sub(/no/,  0, v);
 673             for (f in files) {
 674                 file = files[f];
 675                 if (file ~ /\\.h\$/) {
 676                     printf(\"#define %s %d\\n\", c, v) >>file;
 677                 } else if (file ~ /\\.asm\$/) {
 678                     printf(\"%%define %s %d\\n\", c, v) >>file;
 679                 } else if (file ~ /\\.mak\$/) {
 680                     n = -v ? \"\" : \"!\";
 681                     printf(\"%s%s=yes\\n\", n, c) >>file;
 682                 } else if (file ~ /\\.texi\$/) {
 683                     pre = -v ? \"\" : \"@c \";
 684                     yesno = \$2;
 685                     c2 = tolower(c);
 686                     gsub(/_/, \"-\", c2);
 687                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 688                 }
 689             }
 690         }"
 691 }
 692
 693 print_enabled(){
 694     suf=$1
 695     shift
 696     for v; do
 697         enabled $v && printf "%s\n" ${v%$suf};
 698     done
 699 }
 700
 701 append(){
 702     var=$1
 703     shift
 704     eval "$var=\"\$$var $*\""
 705 }
 706
 707 prepend(){
 708     var=$1
 709     shift
 710     eval "$var=\"$* \$$var\""
 711 }
 712
 713 add_cppflags(){
 714     append CPPFLAGS "$@"
 715 }
 716
 717 add_cflags(){
 718     append CFLAGS $($cflags_filter "$@")
 719 }
 720
 721 add_cxxflags(){
 722     append CXXFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_asflags(){
 726     append ASFLAGS $($asflags_filter "$@")
 727 }
 728
 729 add_ldflags(){
 730     append LDFLAGS $($ldflags_filter "$@")
 731 }
 732
 733 add_extralibs(){
 734     prepend extralibs $($ldflags_filter "$@")
 735 }
 736
 737 add_host_cppflags(){
 738     append host_cppflags "$@"
 739 }
 740
 741 add_host_cflags(){
 742     append host_cflags $($host_cflags_filter "$@")
 743 }
 744
 745 add_host_ldflags(){
 746     append host_ldflags $($host_ldflags_filter "$@")
 747 }
 748
 749 add_compat(){
 750     append compat_objs $1
 751     shift
 752     map 'add_cppflags -D$v' "$@"
 753 }
 754
 755 check_cmd(){
 756     log "$@"
 757     "$@" >> $logfile 2>&1
 758 }
 759
 760 cc_o(){
 761     eval printf '%s\\n' $CC_O
 762 }
 763
 764 cc_e(){
 765     eval printf '%s\\n' $CC_E
 766 }
 767
 768 check_cc(){
 769     log check_cc "$@"
 770     cat > $TMPC
 771     log_file $TMPC
 772     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 773 }
 774
 775 check_cxx(){
 776     log check_cxx "$@"
 777     cat > $TMPCPP
 778     log_file $TMPCPP
 779     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 780 }
 781
 782 check_cpp(){
 783     log check_cpp "$@"
 784     cat > $TMPC
 785     log_file $TMPC
 786     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 787 }
 788
 789 as_o(){
 790     eval printf '%s\\n' $AS_O
 791 }
 792
 793 check_as(){
 794     log check_as "$@"
 795     cat > $TMPS
 796     log_file $TMPS
 797     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 798 }
 799
 800 check_inline_asm(){
 801     log check_inline_asm "$@"
 802     name="$1"
 803     code="$2"
 804     shift 2
 805     disable $name
 806     check_cc "$@" <<EOF && enable $name
 807 void foo(void){ __asm__ volatile($code); }
 808 EOF
 809 }
 810
 811 check_insn(){
 812     log check_insn "$@"
 813     check_inline_asm ${1}_inline "\"$2\""
 814     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 815 }
 816
 817 check_yasm(){
 818     log check_yasm "$@"
 819     echo "$1" > $TMPS
 820     log_file $TMPS
 821     shift 1
 822     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 823 }
 824
 825 ld_o(){
 826     eval printf '%s\\n' $LD_O
 827 }
 828
 829 check_ld(){
 830     log check_ld "$@"
 831     type=$1
 832     shift 1
 833     flags=$(filter_out '-l*|*.so' $@)
 834     libs=$(filter '-l*|*.so' $@)
 835     check_$type $($cflags_filter $flags) || return
 836     flags=$($ldflags_filter $flags)
 837     libs=$($ldflags_filter $libs)
 838     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 839 }
 840
 841 check_code(){
 842     log check_code "$@"
 843     check=$1
 844     headers=$2
 845     code=$3
 846     shift 3
 847     {
 848         for hdr in $headers; do
 849             echo "#include <$hdr>"
 850         done
 851         echo "int main(void) { $code; return 0; }"
 852     } | check_$check "$@"
 853 }
 854
 855 check_cppflags(){
 856     log check_cppflags "$@"
 857     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 858 int x;
 859 EOF
 860 }
 861
 862 test_cflags(){
 863     log test_cflags "$@"
 864     set -- $($cflags_filter "$@")
 865     check_cc "$@" <<EOF
 866 int x;
 867 EOF
 868 }
 869
 870 check_cflags(){
 871     log check_cflags "$@"
 872     test_cflags "$@" && add_cflags "$@"
 873 }
 874
 875 check_cxxflags(){
 876     log check_cxxflags "$@"
 877     set -- $($cflags_filter "$@")
 878     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 879 int x;
 880 EOF
 881 }
 882
 883 test_ldflags(){
 884     log test_ldflags "$@"
 885     check_ld "cc" "$@" <<EOF
 886 int main(void){ return 0; }
 887 EOF
 888 }
 889
 890 check_ldflags(){
 891     log check_ldflags "$@"
 892     test_ldflags "$@" && add_ldflags "$@"
 893 }
 894
 895 check_header(){
 896     log check_header "$@"
 897     header=$1
 898     shift
 899     disable_safe $header
 900     check_cpp "$@" <<EOF && enable_safe $header
 901 #include <$header>
 902 int x;
 903 EOF
 904 }
 905
 906 check_func(){
 907     log check_func "$@"
 908     func=$1
 909     shift
 910     disable $func
 911     check_ld "cc" "$@" <<EOF && enable $func
 912 extern int $func();
 913 int main(void){ $func(); }
 914 EOF
 915 }
 916
 917 check_mathfunc(){
 918     log check_mathfunc "$@"
 919     func=$1
 920     narg=$2
 921     shift 2
 922     test $narg = 2 && args="f, g" || args="f"
 923     disable $func
 924     check_ld "cc" "$@" <<EOF && enable $func
 925 #include <math.h>
 926 float foo(float f, float g) { return $func($args); }
 927 int main(void){ return (int) foo; }
 928 EOF
 929 }
 930
 931 check_func_headers(){
 932     log check_func_headers "$@"
 933     headers=$1
 934     funcs=$2
 935     shift 2
 936     {
 937         for hdr in $headers; do
 938             echo "#include <$hdr>"
 939         done
 940         for func in $funcs; do
 941             echo "long check_$func(void) { return (long) $func; }"
 942         done
 943         echo "int main(void) { return 0; }"
 944     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 945 }
 946
 947 check_class_headers_cpp(){
 948     log check_class_headers_cpp "$@"
 949     headers=$1
 950     classes=$2
 951     shift 2
 952     {
 953         for hdr in $headers; do
 954             echo "#include <$hdr>"
 955         done
 956         echo "int main(void) { "
 957         i=1
 958         for class in $classes; do
 959             echo "$class obj$i;"
 960             i=$(expr $i + 1)
 961         done
 962         echo "return 0; }"
 963     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 964 }
 965
 966 check_cpp_condition(){
 967     log check_cpp_condition "$@"
 968     header=$1
 969     condition=$2
 970     shift 2
 971     check_cpp "$@" <<EOF
 972 #include <$header>
 973 #if !($condition)
 974 #error "unsatisfied condition: $condition"
 975 #endif
 976 EOF
 977 }
 978
 979 check_lib(){
 980     log check_lib "$@"
 981     header="$1"
 982     func="$2"
 983     shift 2
 984     check_header $header && check_func $func "$@" && add_extralibs "$@"
 985 }
 986
 987 check_lib2(){
 988     log check_lib2 "$@"
 989     headers="$1"
 990     funcs="$2"
 991     shift 2
 992     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 993 }
 994
 995 check_lib_cpp(){
 996     log check_lib_cpp "$@"
 997     headers="$1"
 998     classes="$2"
 999     shift 2
1000     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1001 }
1002
1003 check_pkg_config(){
1004     log check_pkg_config "$@"
1005     pkg="$1"
1006     headers="$2"
1007     funcs="$3"
1008     shift 3
1009     check_cmd $pkg_config --exists --print-errors $pkg || return
1010     pkg_cflags=$($pkg_config --cflags $pkg)
1011     pkg_libs=$($pkg_config --libs $pkg)
1012     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1013         set_safe ${pkg}_cflags $pkg_cflags   &&
1014         set_safe ${pkg}_libs   $pkg_libs
1015 }
1016
1017 check_exec(){
1018     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1019 }
1020
1021 check_exec_crash(){
1022     code=$(cat)
1023
1024     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1025     # are safe but may not be available everywhere.  Thus we use
1026     # raise(SIGTERM) instead.  The check is run in a subshell so we
1027     # can redirect the "Terminated" message from the shell.  SIGBUS
1028     # is not defined by standard C so it is used conditionally.
1029
1030     (check_exec "$@") >> $logfile 2>&1 <<EOF
1031 #include <signal.h>
1032 static void sighandler(int sig){
1033     raise(SIGTERM);
1034 }
1035 int foo(void){
1036     $code
1037 }
1038 int (*func_ptr)(void) = foo;
1039 int main(void){
1040     signal(SIGILL, sighandler);
1041     signal(SIGFPE, sighandler);
1042     signal(SIGSEGV, sighandler);
1043 #ifdef SIGBUS
1044     signal(SIGBUS, sighandler);
1045 #endif
1046     return func_ptr();
1047 }
1048 EOF
1049 }
1050
1051 check_type(){
1052     log check_type "$@"
1053     headers=$1
1054     type=$2
1055     shift 2
1056     disable_safe "$type"
1057     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1058 }
1059
1060 check_struct(){
1061     log check_struct "$@"
1062     headers=$1
1063     struct=$2
1064     member=$3
1065     shift 3
1066     disable_safe "${struct}_${member}"
1067     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1068         enable_safe "${struct}_${member}"
1069 }
1070
1071 check_builtin(){
1072     log check_builtin "$@"
1073     name=$1
1074     headers=$2
1075     builtin=$3
1076     shift 3
1077     disable "$name"
1078     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1079 }
1080
1081 require(){
1082     name="$1"
1083     header="$2"
1084     func="$3"
1085     shift 3
1086     check_lib $header $func "$@" || die "ERROR: $name not found"
1087 }
1088
1089 require2(){
1090     name="$1"
1091     headers="$2"
1092     func="$3"
1093     shift 3
1094     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1095 }
1096
1097 require_cpp(){
1098     name="$1"
1099     headers="$2"
1100     classes="$3"
1101     shift 3
1102     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1103 }
1104
1105 require_pkg_config(){
1106     pkg="$1"
1107     check_pkg_config "$@" || die "ERROR: $pkg not found"
1108     add_cflags    $(get_safe ${pkg}_cflags)
1109     add_extralibs $(get_safe ${pkg}_libs)
1110 }
1111
1112 hostcc_o(){
1113     eval printf '%s\\n' $HOSTCC_O
1114 }
1115
1116 check_host_cc(){
1117     log check_host_cc "$@"
1118     cat > $TMPC
1119     log_file $TMPC
1120     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1121 }
1122
1123 check_host_cppflags(){
1124     log check_host_cppflags "$@"
1125     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1126 int x;
1127 EOF
1128 }
1129
1130 check_host_cflags(){
1131     log check_host_cflags "$@"
1132     set -- $($host_cflags_filter "$@")
1133     check_host_cc "$@" <<EOF && append host_cflags "$@"
1134 int x;
1135 EOF
1136 }
1137
1138 apply(){
1139     file=$1
1140     shift
1141     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1142 }
1143
1144 cp_if_changed(){
1145     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1146     mkdir -p "$(dirname $2)"
1147     $cp_f "$1" "$2"
1148 }
1149
1150 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1151 # system-dependent things.
1152
1153 COMPONENT_LIST="
1154     bsfs
1155     decoders
1156     demuxers
1157     encoders
1158     filters
1159     hwaccels
1160     indevs
1161     muxers
1162     outdevs
1163     parsers
1164     protocols
1165 "
1166
1167 EXAMPLE_LIST="
1168     decoding_encoding_example
1169     demuxing_decoding_example
1170     filtering_audio_example
1171     filtering_video_example
1172     metadata_example
1173     muxing_example
1174     resampling_audio_example
1175     scaling_video_example
1176     transcode_aac_example
1177 "
1178
1179 EXTERNAL_LIBRARY_LIST="
1180     avisynth
1181     bzlib
1182     crystalhd
1183     fontconfig
1184     frei0r
1185     gnutls
1186     iconv
1187     ladspa
1188     libaacplus
1189     libass
1190     libbluray
1191     libcaca
1192     libcdio
1193     libcelt
1194     libdc1394
1195     libfaac
1196     libfdk_aac
1197     libflite
1198     libfreetype
1199     libgme
1200     libgsm
1201     libiec61883
1202     libilbc
1203     libmodplug
1204     libmp3lame
1205     libnut
1206     libopencore_amrnb
1207     libopencore_amrwb
1208     libopencv
1209     libopenjpeg
1210     libopus
1211     libpulse
1212     libquvi
1213     librtmp
1214     libschroedinger
1215     libshine
1216     libsoxr
1217     libspeex
1218     libssh
1219     libstagefright_h264
1220     libtheora
1221     libtwolame
1222     libutvideo
1223     libv4l2
1224     libvidstab
1225     libvo_aacenc
1226     libvo_amrwbenc
1227     libvorbis
1228     libvpx
1229     libwavpack
1230     libx264
1231     libxavs
1232     libxvid
1233     libzmq
1234     libzvbi
1235     openal
1236     opencl
1237     openssl
1238     x11grab
1239     zlib
1240 "
1241
1242 DOCUMENT_LIST="
1243     doc
1244     htmlpages
1245     manpages
1246     podpages
1247     txtpages
1248 "
1249
1250 HWACCEL_LIST="
1251     dxva2
1252     vaapi
1253     vda
1254     vdpau
1255 "
1256
1257 LIBRARY_LIST="
1258     avcodec
1259     avdevice
1260     avfilter
1261     avformat
1262     avresample
1263     avutil
1264     postproc
1265     swresample
1266     swscale
1267 "
1268
1269 PROGRAM_LIST="
1270     ffplay
1271     ffprobe
1272     ffserver
1273     ffmpeg
1274 "
1275
1276 CONFIG_LIST="
1277     $COMPONENT_LIST
1278     $DOCUMENT_LIST
1279     $EXAMPLE_LIST
1280     $EXTERNAL_LIBRARY_LIST
1281     $HWACCEL_LIST
1282     $LIBRARY_LIST
1283     $PROGRAM_LIST
1284     dct
1285     dwt
1286     error_resilience
1287     fast_unaligned
1288     fft
1289     ftrapv
1290     gpl
1291     gray
1292     hardcoded_tables
1293     incompatible_libav_abi
1294     incompatible_fork_abi
1295     lsp
1296     lzo
1297     mdct
1298     memalign_hack
1299     memory_poisoning
1300     network
1301     nonfree
1302     pic
1303     rdft
1304     runtime_cpudetect
1305     safe_bitstream_reader
1306     shared
1307     small
1308     sram
1309     static
1310     swscale_alpha
1311     thumb
1312     version3
1313     xmm_clobber_test
1314 "
1315
1316 THREADS_LIST='
1317     pthreads
1318     w32threads
1319     os2threads
1320 '
1321
1322 ATOMICS_LIST='
1323     atomics_gcc
1324     atomics_suncc
1325     atomics_win32
1326 '
1327
1328 ARCH_LIST='
1329     aarch64
1330     alpha
1331     arm
1332     avr32
1333     avr32_ap
1334     avr32_uc
1335     bfin
1336     ia64
1337     m68k
1338     mips
1339     mips64
1340     parisc
1341     ppc
1342     ppc64
1343     s390
1344     sh4
1345     sparc
1346     sparc64
1347     tilegx
1348     tilepro
1349     tomi
1350     x86
1351     x86_32
1352     x86_64
1353 '
1354
1355 ARCH_EXT_LIST_ARM='
1356     armv5te
1357     armv6
1358     armv6t2
1359     neon
1360     vfp
1361     vfpv3
1362 '
1363
1364 ARCH_EXT_LIST_X86='
1365     amd3dnow
1366     amd3dnowext
1367     avx
1368     avx2
1369     fma4
1370     i686
1371     mmx
1372     mmxext
1373     sse
1374     sse2
1375     sse3
1376     sse4
1377     sse42
1378     ssse3
1379 '
1380
1381 ARCH_EXT_LIST="
1382     $ARCH_EXT_LIST_ARM
1383     $ARCH_EXT_LIST_X86
1384     altivec
1385     ppc4xx
1386     vis
1387     mipsfpu
1388     mips32r2
1389     mipsdspr1
1390     mipsdspr2
1391 "
1392
1393 HAVE_LIST_CMDLINE='
1394     inline_asm
1395     symver
1396     yasm
1397 '
1398
1399 HAVE_LIST_PUB='
1400     bigendian
1401     fast_unaligned
1402     incompatible_libav_abi
1403     incompatible_fork_abi
1404 '
1405
1406 MATH_FUNCS="
1407     atanf
1408     atan2f
1409     cbrt
1410     cbrtf
1411     cosf
1412     exp2
1413     exp2f
1414     expf
1415     isinf
1416     isnan
1417     ldexpf
1418     llrint
1419     llrintf
1420     log2
1421     log2f
1422     log10f
1423     lrint
1424     lrintf
1425     powf
1426     rint
1427     round
1428     roundf
1429     sinf
1430     trunc
1431     truncf
1432 "
1433
1434 HAVE_LIST="
1435     $ARCH_EXT_LIST
1436     $(add_suffix _external $ARCH_EXT_LIST)
1437     $(add_suffix _inline   $ARCH_EXT_LIST)
1438     $HAVE_LIST_CMDLINE
1439     $HAVE_LIST_PUB
1440     $THREADS_LIST
1441     $ATOMICS_LIST
1442     $MATH_FUNCS
1443     access
1444     aligned_malloc
1445     aligned_stack
1446     alsa_asoundlib_h
1447     altivec_h
1448     arpa_inet_h
1449     asm_mod_q
1450     asm_mod_y
1451     asm_types_h
1452     atomic_cas_ptr
1453     atomics_native
1454     attribute_may_alias
1455     attribute_packed
1456     cdio_paranoia_h
1457     cdio_paranoia_paranoia_h
1458     CL_cl_h
1459     clock_gettime
1460     closesocket
1461     CommandLineToArgvW
1462     cpunop
1463     CryptGenRandom
1464     dcbzl
1465     dev_bktr_ioctl_bt848_h
1466     dev_bktr_ioctl_meteor_h
1467     dev_ic_bt8xx_h
1468     dev_video_bktr_ioctl_bt848_h
1469     dev_video_meteor_ioctl_meteor_h
1470     direct_h
1471     dlfcn_h
1472     dlopen
1473     dos_paths
1474     dxva_h
1475     ebp_available
1476     ebx_available
1477     fast_64bit
1478     fast_clz
1479     fast_cmov
1480     fcntl
1481     fork
1482     getaddrinfo
1483     gethrtime
1484     getopt
1485     GetProcessAffinityMask
1486     GetProcessMemoryInfo
1487     GetProcessTimes
1488     GetSystemTimeAsFileTime
1489     getrusage
1490     getservbyport
1491     gettimeofday
1492     glob
1493     gnu_as
1494     gsm_h
1495     ibm_asm
1496     inet_aton
1497     io_h
1498     inline_asm_labels
1499     isatty
1500     jack_port_get_latency_range
1501     kbhit
1502     ldbrx
1503     libdc1394_1
1504     libdc1394_2
1505     local_aligned_16
1506     local_aligned_8
1507     localtime_r
1508     loongson
1509     lzo1x_999_compress
1510     machine_ioctl_bt848_h
1511     machine_ioctl_meteor_h
1512     machine_rw_barrier
1513     makeinfo
1514     malloc_h
1515     MapViewOfFile
1516     memalign
1517     MemoryBarrier
1518     mkstemp
1519     mm_empty
1520     mmap
1521     mprotect
1522     msvcrt
1523     nanosleep
1524     openjpeg_1_5_openjpeg_h
1525     PeekNamedPipe
1526     perl
1527     pod2man
1528     poll_h
1529     posix_memalign
1530     pragma_deprecated
1531     pthread_cancel
1532     rdtsc
1533     rsync_contimeout
1534     sarestart
1535     sched_getaffinity
1536     sdl
1537     SetConsoleTextAttribute
1538     setmode
1539     setrlimit
1540     Sleep
1541     sndio_h
1542     socklen_t
1543     soundcard_h
1544     strerror_r
1545     struct_addrinfo
1546     struct_group_source_req
1547     struct_ip_mreq_source
1548     struct_ipv6_mreq
1549     struct_pollfd
1550     struct_rusage_ru_maxrss
1551     struct_sctp_event_subscribe
1552     struct_sockaddr_in6
1553     struct_sockaddr_sa_len
1554     struct_sockaddr_storage
1555     struct_stat_st_mtim_tv_nsec
1556     struct_v4l2_frmivalenum_discrete
1557     symver_asm_label
1558     symver_gnu_asm
1559     sync_val_compare_and_swap
1560     sysconf
1561     sysctl
1562     sys_mman_h
1563     sys_param_h
1564     sys_resource_h
1565     sys_select_h
1566     sys_soundcard_h
1567     sys_time_h
1568     sys_un_h
1569     sys_videoio_h
1570     termios_h
1571     texi2html
1572     threads
1573     unistd_h
1574     usleep
1575     vdpau_x11
1576     vfp_args
1577     VirtualAlloc
1578     windows_h
1579     winsock2_h
1580     xform_asm
1581     xlib
1582     xmm_clobbers
1583 "
1584
1585 # options emitted with CONFIG_ prefix but not available on the command line
1586 CONFIG_EXTRA="
1587     aandcttables
1588     ac3dsp
1589     audio_frame_queue
1590     dsputil
1591     exif
1592     frame_thread_encoder
1593     gcrypt
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     lgplv3
1604     lpc
1605     mpegaudio
1606     mpegaudiodsp
1607     mpegvideo
1608     mpegvideoenc
1609     nettle
1610     rangecoder
1611     riffdec
1612     riffenc
1613     rtpdec
1614     rtpenc_chain
1615     sinewin
1616     videodsp
1617     vp3dsp
1618 "
1619
1620 CMDLINE_SELECT="
1621     $ARCH_EXT_LIST
1622     $CONFIG_LIST
1623     $HAVE_LIST_CMDLINE
1624     $THREADS_LIST
1625     asm
1626     cross_compile
1627     debug
1628     extra_warnings
1629     logging
1630     lto
1631     optimizations
1632     rpath
1633     stripping
1634 "
1635
1636 PATHS_LIST='
1637     bindir
1638     datadir
1639     docdir
1640     incdir
1641     libdir
1642     mandir
1643     prefix
1644     shlibdir
1645 '
1646
1647 CMDLINE_SET="
1648     $PATHS_LIST
1649     ar
1650     arch
1651     as
1652     assert_level
1653     build_suffix
1654     cc
1655     cpu
1656     cross_prefix
1657     cxx
1658     dep_cc
1659     extra_version
1660     host_cc
1661     host_cflags
1662     host_ld
1663     host_ldflags
1664     host_libs
1665     host_os
1666     install
1667     ld
1668     logfile
1669     malloc_prefix
1670     nm
1671     optflags
1672     pkg_config
1673     progs_suffix
1674     random_seed
1675     samples
1676     strip
1677     sysinclude
1678     sysroot
1679     target_exec
1680     target_os
1681     target_path
1682     target_samples
1683     tempprefix
1684     toolchain
1685     valgrind
1686     yasmexe
1687 "
1688
1689 CMDLINE_APPEND="
1690     extra_cflags
1691     extra_cxxflags
1692     host_cppflags
1693 "
1694
1695 # code dependency declarations
1696
1697 # architecture extensions
1698
1699 armv5te_deps="arm"
1700 armv6_deps="arm"
1701 armv6t2_deps="arm"
1702 neon_deps="arm"
1703 vfp_deps="arm"
1704 vfpv3_deps="vfp"
1705
1706 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1707
1708 mipsfpu_deps="mips"
1709 mips32r2_deps="mips"
1710 mipsdspr1_deps="mips"
1711 mipsdspr2_deps="mips"
1712
1713 altivec_deps="ppc"
1714 ppc4xx_deps="ppc"
1715
1716 vis_deps="sparc"
1717
1718 cpunop_deps="i686"
1719 x86_64_select="i686"
1720 x86_64_suggest="fast_cmov"
1721
1722 amd3dnow_deps="mmx"
1723 amd3dnowext_deps="amd3dnow"
1724 mmx_deps="x86"
1725 mmxext_deps="mmx"
1726 sse_deps="mmxext"
1727 sse2_deps="sse"
1728 sse3_deps="sse2"
1729 ssse3_deps="sse3"
1730 sse4_deps="ssse3"
1731 sse42_deps="sse4"
1732 avx_deps="sse42"
1733 fma4_deps="avx"
1734 avx2_deps="avx"
1735
1736 mmx_external_deps="yasm"
1737 mmx_inline_deps="inline_asm"
1738 mmx_suggest="mmx_external mmx_inline"
1739
1740 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1741     eval dep=\$${ext}_deps
1742     eval ${ext}_external_deps='"${dep}_external"'
1743     eval ${ext}_inline_deps='"${dep}_inline"'
1744     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1745 done
1746
1747 aligned_stack_if_any="ppc x86"
1748 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1749 fast_clz_if_any="alpha avr32 mips ppc x86"
1750 fast_unaligned_if_any="ppc x86"
1751
1752 inline_asm_deps="!tms470"
1753 need_memalign="altivec neon sse"
1754
1755 symver_if_any="symver_asm_label symver_gnu_asm"
1756
1757 log2_deps="!msvcrt"
1758
1759 # subsystems
1760 dct_select="rdft"
1761 error_resilience_select="dsputil"
1762 frame_thread_encoder_deps="encoders threads"
1763 lpc_select="dsputil"
1764 mdct_select="fft"
1765 rdft_select="fft"
1766 mpegaudio_select="mpegaudiodsp"
1767 mpegaudiodsp_select="dct"
1768 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1769 mpegvideoenc_select="mpegvideo"
1770
1771 # decoders / encoders
1772 aac_decoder_select="mdct sinewin"
1773 aac_encoder_select="audio_frame_queue mdct sinewin"
1774 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1775 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1776 ac3_encoder_select="mdct ac3dsp dsputil"
1777 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1778 aic_decoder_select="dsputil golomb"
1779 alac_encoder_select="lpc"
1780 als_decoder_select="dsputil"
1781 amrnb_decoder_select="lsp"
1782 amrwb_decoder_select="lsp"
1783 amv_decoder_select="dsputil hpeldsp exif"
1784 amv_encoder_select="aandcttables"
1785 ape_decoder_select="dsputil"
1786 asv1_decoder_select="dsputil"
1787 asv1_encoder_select="dsputil"
1788 asv2_decoder_select="dsputil"
1789 asv2_encoder_select="dsputil"
1790 atrac1_decoder_select="mdct sinewin"
1791 atrac3_decoder_select="mdct"
1792 avrn_decoder_select="exif"
1793 bink_decoder_select="dsputil hpeldsp"
1794 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1795 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1796 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1797 cllc_decoder_select="dsputil"
1798 comfortnoise_encoder_select="lpc"
1799 cook_decoder_select="dsputil mdct sinewin"
1800 cscd_decoder_select="lzo"
1801 cscd_decoder_suggest="zlib"
1802 dca_decoder_select="mdct"
1803 dirac_decoder_select="dsputil dwt golomb videodsp"
1804 dnxhd_decoder_select="dsputil"
1805 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1806 dvvideo_decoder_select="dsputil"
1807 dvvideo_encoder_select="dsputil"
1808 dxa_decoder_select="zlib"
1809 eac3_decoder_select="ac3_decoder"
1810 eac3_encoder_select="ac3_encoder"
1811 eamad_decoder_select="aandcttables dsputil mpegvideo"
1812 eatgq_decoder_select="aandcttables"
1813 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1814 exr_decoder_select="zlib"
1815 ffv1_decoder_select="dsputil golomb rangecoder"
1816 ffv1_encoder_select="dsputil rangecoder"
1817 ffvhuff_decoder_select="dsputil"
1818 ffvhuff_encoder_select="dsputil huffman"
1819 flac_decoder_select="golomb"
1820 flac_encoder_select="dsputil golomb lpc"
1821 flashsv_decoder_select="zlib"
1822 flashsv_encoder_select="zlib"
1823 flashsv2_encoder_select="zlib"
1824 flashsv2_decoder_select="zlib"
1825 flv_decoder_select="h263_decoder"
1826 flv_encoder_select="h263_encoder"
1827 fourxm_decoder_select="dsputil"
1828 fraps_decoder_select="dsputil huffman"
1829 g2m_decoder_select="dsputil zlib"
1830 g729_decoder_select="dsputil"
1831 h261_decoder_select="error_resilience mpegvideo"
1832 h261_encoder_select="aandcttables mpegvideoenc"
1833 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1834 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1835 h263i_decoder_select="h263_decoder"
1836 h263p_encoder_select="h263_encoder"
1837 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1838 h264_decoder_suggest="error_resilience"
1839 hevc_decoder_select="dsputil golomb videodsp"
1840 huffyuv_decoder_select="dsputil"
1841 huffyuv_encoder_select="dsputil huffman"
1842 iac_decoder_select="dsputil fft mdct sinewin"
1843 imc_decoder_select="dsputil fft mdct sinewin"
1844 indeo3_decoder_select="hpeldsp"
1845 interplay_video_decoder_select="hpeldsp"
1846 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1847 jpegls_encoder_select="golomb"
1848 jv_decoder_select="dsputil"
1849 lagarith_decoder_select="dsputil"
1850 ljpeg_encoder_select="aandcttables mpegvideoenc"
1851 loco_decoder_select="golomb"
1852 mdec_decoder_select="dsputil error_resilience mpegvideo"
1853 metasound_decoder_select="lsp mdct sinewin"
1854 mimic_decoder_select="dsputil hpeldsp"
1855 mjpeg_decoder_select="dsputil hpeldsp exif"
1856 mjpegb_decoder_select="dsputil hpeldsp exif"
1857 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1858 mlp_decoder_select="dsputil mlp_parser"
1859 motionpixels_decoder_select="dsputil"
1860 mp1_decoder_select="mpegaudio"
1861 mp1float_decoder_select="mpegaudio"
1862 mp2_decoder_select="mpegaudio"
1863 mp2float_decoder_select="mpegaudio"
1864 mp3_decoder_select="mpegaudio"
1865 mp3adu_decoder_select="mpegaudio"
1866 mp3adufloat_decoder_select="mpegaudio"
1867 mp3float_decoder_select="mpegaudio"
1868 mp3on4_decoder_select="mpegaudio"
1869 mp3on4float_decoder_select="mpegaudio"
1870 mpc7_decoder_select="dsputil mpegaudiodsp"
1871 mpc8_decoder_select="dsputil mpegaudiodsp"
1872 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1873 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1874 mpeg1video_decoder_select="error_resilience mpegvideo"
1875 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1876 mpeg2video_decoder_select="error_resilience mpegvideo"
1877 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1878 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1879 mpeg4_encoder_select="h263_encoder"
1880 msmpeg4v1_decoder_select="h263_decoder"
1881 msmpeg4v2_decoder_select="h263_decoder"
1882 msmpeg4v2_encoder_select="h263_encoder"
1883 msmpeg4v3_decoder_select="h263_decoder"
1884 msmpeg4v3_encoder_select="h263_encoder"
1885 mss2_decoder_select="error_resilience vc1_decoder"
1886 mxpeg_decoder_select="dsputil hpeldsp exif"
1887 nellymoser_decoder_select="mdct sinewin"
1888 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1889 nuv_decoder_select="dsputil lzo"
1890 png_decoder_select="zlib"
1891 png_encoder_select="dsputil zlib"
1892 prores_decoder_select="dsputil"
1893 prores_encoder_select="dsputil"
1894 qcelp_decoder_select="lsp"
1895 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1896 ra_144_encoder_select="audio_frame_queue lpc"
1897 ralf_decoder_select="golomb"
1898 rtjpeg_decoder_select="dsputil"
1899 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1900 rv10_encoder_select="h263_encoder"
1901 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1902 rv20_encoder_select="h263_encoder"
1903 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1904 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1905 shorten_decoder_select="golomb"
1906 sipr_decoder_select="lsp"
1907 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1908 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1909 sonic_decoder_select="golomb"
1910 sonic_encoder_select="golomb"
1911 sonic_ls_encoder_select="golomb"
1912 sp5x_decoder_select="dsputil hpeldsp exif"
1913 svq1_decoder_select="hpeldsp"
1914 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1915 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1916 svq3_decoder_suggest="error_resilience zlib"
1917 tak_decoder_select="dsputil"
1918 theora_decoder_select="vp3_decoder"
1919 tiff_decoder_suggest="zlib"
1920 tiff_encoder_suggest="zlib"
1921 thp_decoder_select="dsputil hpeldsp exif"
1922 truehd_decoder_select="mlp_parser"
1923 truemotion2_decoder_select="dsputil"
1924 truespeech_decoder_select="dsputil"
1925 tscc_decoder_select="zlib"
1926 twinvq_decoder_select="mdct lsp sinewin"
1927 utvideo_decoder_select="dsputil"
1928 utvideo_encoder_select="dsputil huffman"
1929 vble_decoder_select="dsputil"
1930 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1931 vc1image_decoder_select="vc1_decoder"
1932 vorbis_decoder_select="mdct"
1933 vorbis_encoder_select="mdct"
1934 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1935 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1936 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1937 vp6a_decoder_select="vp6_decoder"
1938 vp6f_decoder_select="vp6_decoder"
1939 vp8_decoder_select="h264pred videodsp"
1940 vp9_decoder_select="videodsp"
1941 webp_decoder_select="vp8_decoder"
1942 wmapro_decoder_select="mdct sinewin"
1943 wmav1_decoder_select="mdct sinewin"
1944 wmav1_encoder_select="mdct sinewin"
1945 wmav2_decoder_select="mdct sinewin"
1946 wmav2_encoder_select="mdct sinewin"
1947 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1948 wmv1_decoder_select="h263_decoder"
1949 wmv1_encoder_select="h263_encoder"
1950 wmv2_decoder_select="h263_decoder videodsp"
1951 wmv2_encoder_select="h263_encoder"
1952 wmv3_decoder_select="vc1_decoder"
1953 wmv3image_decoder_select="wmv3_decoder"
1954 zerocodec_decoder_select="zlib"
1955 zlib_decoder_select="zlib"
1956 zlib_encoder_select="zlib"
1957 zmbv_decoder_select="zlib"
1958 zmbv_encoder_select="zlib"
1959
1960 # hardware accelerators
1961 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1962 dxva2_deps="dxva2api_h"
1963 vaapi_deps="va_va_h"
1964 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1965 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1966 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1967
1968 h263_vaapi_hwaccel_deps="vaapi"
1969 h263_vaapi_hwaccel_select="h263_decoder"
1970 h263_vdpau_hwaccel_deps="vdpau"
1971 h263_vdpau_hwaccel_select="h263_decoder"
1972 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1973 h264_dxva2_hwaccel_deps="dxva2"
1974 h264_dxva2_hwaccel_select="h264_decoder"
1975 h264_vaapi_hwaccel_deps="vaapi"
1976 h264_vaapi_hwaccel_select="h264_decoder"
1977 h264_vda_decoder_deps="vda"
1978 h264_vda_decoder_select="h264_decoder"
1979 h264_vda_hwaccel_deps="vda"
1980 h264_vda_hwaccel_select="h264_decoder"
1981 h264_vdpau_decoder_deps="vdpau"
1982 h264_vdpau_decoder_select="h264_decoder"
1983 h264_vdpau_hwaccel_deps="vdpau"
1984 h264_vdpau_hwaccel_select="h264_decoder"
1985 mpeg_vdpau_decoder_deps="vdpau"
1986 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1987 mpeg1_vdpau_decoder_deps="vdpau"
1988 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1989 mpeg1_vdpau_hwaccel_deps="vdpau"
1990 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1991 mpeg2_crystalhd_decoder_select="crystalhd"
1992 mpeg2_dxva2_hwaccel_deps="dxva2"
1993 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1994 mpeg2_vaapi_hwaccel_deps="vaapi"
1995 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1996 mpeg2_vdpau_hwaccel_deps="vdpau"
1997 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1998 mpeg4_crystalhd_decoder_select="crystalhd"
1999 mpeg4_vaapi_hwaccel_deps="vaapi"
2000 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2001 mpeg4_vdpau_decoder_deps="vdpau"
2002 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2003 mpeg4_vdpau_hwaccel_deps="vdpau"
2004 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2005 msmpeg4_crystalhd_decoder_select="crystalhd"
2006 vc1_crystalhd_decoder_select="crystalhd"
2007 vc1_dxva2_hwaccel_deps="dxva2"
2008 vc1_dxva2_hwaccel_select="vc1_decoder"
2009 vc1_vaapi_hwaccel_deps="vaapi"
2010 vc1_vaapi_hwaccel_select="vc1_decoder"
2011 vc1_vdpau_decoder_deps="vdpau"
2012 vc1_vdpau_decoder_select="vc1_decoder"
2013 vc1_vdpau_hwaccel_deps="vdpau"
2014 vc1_vdpau_hwaccel_select="vc1_decoder"
2015 wmv3_crystalhd_decoder_select="crystalhd"
2016 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2017 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2018 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2019 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2020
2021 # parsers
2022 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2023 hevc_parser_select="hevc_decoder"
2024 mpeg4video_parser_select="error_resilience mpegvideo"
2025 mpegvideo_parser_select="error_resilience mpegvideo"
2026 vc1_parser_select="mpegvideo"
2027
2028 # external libraries
2029 libaacplus_encoder_deps="libaacplus"
2030 libcelt_decoder_deps="libcelt"
2031 libfaac_encoder_deps="libfaac"
2032 libfaac_encoder_select="audio_frame_queue"
2033 libfdk_aac_decoder_deps="libfdk_aac"
2034 libfdk_aac_encoder_deps="libfdk_aac"
2035 libfdk_aac_encoder_select="audio_frame_queue"
2036 libgme_demuxer_deps="libgme"
2037 libgsm_decoder_deps="libgsm"
2038 libgsm_encoder_deps="libgsm"
2039 libgsm_ms_decoder_deps="libgsm"
2040 libgsm_ms_encoder_deps="libgsm"
2041 libilbc_decoder_deps="libilbc"
2042 libilbc_encoder_deps="libilbc"
2043 libmodplug_demuxer_deps="libmodplug"
2044 libmp3lame_encoder_deps="libmp3lame"
2045 libmp3lame_encoder_select="audio_frame_queue"
2046 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2047 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2048 libopencore_amrnb_encoder_select="audio_frame_queue"
2049 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2050 libopenjpeg_decoder_deps="libopenjpeg"
2051 libopenjpeg_encoder_deps="libopenjpeg"
2052 libopus_decoder_deps="libopus"
2053 libopus_encoder_deps="libopus"
2054 libopus_encoder_select="audio_frame_queue"
2055 libquvi_demuxer_deps="libquvi"
2056 libschroedinger_decoder_deps="libschroedinger"
2057 libschroedinger_encoder_deps="libschroedinger"
2058 libshine_encoder_deps="libshine"
2059 libshine_encoder_select="audio_frame_queue"
2060 libspeex_decoder_deps="libspeex"
2061 libspeex_encoder_deps="libspeex"
2062 libspeex_encoder_select="audio_frame_queue"
2063 libstagefright_h264_decoder_deps="libstagefright_h264"
2064 libtheora_encoder_deps="libtheora"
2065 libtwolame_encoder_deps="libtwolame"
2066 libvo_aacenc_encoder_deps="libvo_aacenc"
2067 libvo_aacenc_encoder_select="audio_frame_queue"
2068 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2069 libvorbis_decoder_deps="libvorbis"
2070 libvorbis_encoder_deps="libvorbis"
2071 libvorbis_encoder_select="audio_frame_queue"
2072 libvpx_vp8_decoder_deps="libvpx"
2073 libvpx_vp8_encoder_deps="libvpx"
2074 libvpx_vp9_decoder_deps="libvpx"
2075 libvpx_vp9_encoder_deps="libvpx"
2076 libwavpack_encoder_deps="libwavpack"
2077 libx264_encoder_deps="libx264"
2078 libx264rgb_encoder_deps="libx264"
2079 libxavs_encoder_deps="libxavs"
2080 libxvid_encoder_deps="libxvid"
2081 libutvideo_decoder_deps="libutvideo"
2082 libutvideo_encoder_deps="libutvideo"
2083 libzvbi_teletext_decoder_deps="libzvbi"
2084
2085 # demuxers / muxers
2086 ac3_demuxer_select="ac3_parser"
2087 asf_demuxer_select="riffdec"
2088 asf_muxer_select="riffenc"
2089 asf_stream_muxer_select="asf_muxer"
2090 avi_demuxer_select="riffdec"
2091 avi_muxer_select="riffenc"
2092 avisynth_demuxer_deps="avisynth"
2093 avisynth_demuxer_select="riffdec"
2094 caf_demuxer_select="riffdec"
2095 dirac_demuxer_select="dirac_parser"
2096 dts_demuxer_select="dca_parser"
2097 dtshd_demuxer_select="dca_parser"
2098 dxa_demuxer_select="riffdec"
2099 eac3_demuxer_select="ac3_parser"
2100 f4v_muxer_select="mov_muxer"
2101 flac_demuxer_select="flac_parser"
2102 hds_muxer_select="flv_muxer"
2103 hls_muxer_select="mpegts_muxer"
2104 ipod_muxer_select="mov_muxer"
2105 ismv_muxer_select="mov_muxer"
2106 libnut_demuxer_deps="libnut"
2107 libnut_muxer_deps="libnut"
2108 matroska_audio_muxer_select="matroska_muxer"
2109 matroska_demuxer_select="riffdec"
2110 matroska_demuxer_suggest="bzlib lzo zlib"
2111 matroska_muxer_select="riffenc"
2112 mmf_muxer_select="riffenc"
2113 mov_demuxer_select="riffdec"
2114 mov_demuxer_suggest="zlib"
2115 mov_muxer_select="riffenc rtpenc_chain"
2116 mp3_demuxer_select="mpegaudio_parser"
2117 mp4_muxer_select="mov_muxer"
2118 mpegts_muxer_select="adts_muxer latm_muxer"
2119 mpegtsraw_demuxer_select="mpegts_demuxer"
2120 mxf_d10_muxer_select="mxf_muxer"
2121 nut_muxer_select="riffenc"
2122 nuv_demuxer_select="riffdec"
2123 ogg_demuxer_select="golomb"
2124 psp_muxer_select="mov_muxer"
2125 rtp_demuxer_select="sdp_demuxer"
2126 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2127 rtsp_demuxer_select="http_protocol rtpdec"
2128 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2129 sap_demuxer_select="sdp_demuxer"
2130 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2131 sdp_demuxer_select="rtpdec"
2132 smoothstreaming_muxer_select="ismv_muxer"
2133 spdif_muxer_select="aac_parser"
2134 tak_demuxer_select="tak_parser"
2135 tg2_muxer_select="mov_muxer"
2136 tgp_muxer_select="mov_muxer"
2137 vobsub_demuxer_select="mpegps_demuxer"
2138 w64_demuxer_select="wav_demuxer"
2139 w64_muxer_select="wav_muxer"
2140 wav_demuxer_select="riffdec"
2141 wav_muxer_select="riffenc"
2142 webm_muxer_select="riffenc"
2143 wtv_demuxer_select="riffdec"
2144 xmv_demuxer_select="riffdec"
2145 xwma_demuxer_select="riffdec"
2146
2147 # indevs / outdevs
2148 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2149 alsa_outdev_deps="alsa_asoundlib_h"
2150 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2151 caca_outdev_deps="libcaca"
2152 dshow_indev_deps="IBaseFilter"
2153 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2154 dv1394_indev_deps="dv1394"
2155 dv1394_indev_select="dv_demuxer"
2156 fbdev_indev_deps="linux_fb_h"
2157 fbdev_outdev_deps="linux_fb_h"
2158 iec61883_indev_deps="libiec61883"
2159 jack_indev_deps="jack_jack_h sem_timedwait"
2160 lavfi_indev_deps="avfilter"
2161 libcdio_indev_deps="libcdio"
2162 libdc1394_indev_deps="libdc1394"
2163 libv4l2_indev_deps="libv4l2"
2164 openal_indev_deps="openal"
2165 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2166 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2167 pulse_indev_deps="libpulse"
2168 pulse_outdev_deps="libpulse"
2169 sdl_outdev_deps="sdl"
2170 sndio_indev_deps="sndio_h"
2171 sndio_outdev_deps="sndio_h"
2172 v4l_indev_deps="linux_videodev_h"
2173 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2174 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2175 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2176 vfwcap_indev_extralibs="-lavicap32"
2177 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2178 xv_outdev_extralibs="-lXv -lX11 -lXext"
2179 x11grab_indev_deps="x11grab"
2180
2181 # protocols
2182 bluray_protocol_deps="libbluray"
2183 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2184 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2185 ffrtmpcrypt_protocol_select="tcp_protocol"
2186 ffrtmphttp_protocol_deps="!librtmp_protocol"
2187 ffrtmphttp_protocol_select="http_protocol"
2188 ftp_protocol_select="tcp_protocol"
2189 gopher_protocol_select="network"
2190 httpproxy_protocol_select="tcp_protocol"
2191 http_protocol_select="tcp_protocol"
2192 https_protocol_select="tls_protocol"
2193 librtmp_protocol_deps="librtmp"
2194 librtmpe_protocol_deps="librtmp"
2195 librtmps_protocol_deps="librtmp"
2196 librtmpt_protocol_deps="librtmp"
2197 librtmpte_protocol_deps="librtmp"
2198 libssh_protocol_deps="libssh"
2199 mmsh_protocol_select="http_protocol"
2200 mmst_protocol_select="network"
2201 rtmp_protocol_deps="!librtmp_protocol"
2202 rtmp_protocol_select="tcp_protocol"
2203 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2204 rtmps_protocol_deps="!librtmp_protocol"
2205 rtmps_protocol_select="tls_protocol"
2206 rtmpt_protocol_select="ffrtmphttp_protocol"
2207 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2208 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2209 rtp_protocol_select="udp_protocol"
2210 sctp_protocol_deps="struct_sctp_event_subscribe"
2211 sctp_protocol_select="network"
2212 srtp_protocol_select="rtp_protocol"
2213 tcp_protocol_select="network"
2214 tls_protocol_deps_any="openssl gnutls"
2215 tls_protocol_select="tcp_protocol"
2216 udp_protocol_select="network"
2217 unix_protocol_deps="sys_un_h"
2218 unix_protocol_select="network"
2219
2220 # filters
2221 aconvert_filter_deps="swresample"
2222 amovie_filter_deps="avcodec avformat"
2223 aresample_filter_deps="swresample"
2224 ass_filter_deps="libass"
2225 asyncts_filter_deps="avresample"
2226 atempo_filter_deps="avcodec"
2227 atempo_filter_select="rdft"
2228 azmq_filter_deps="libzmq"
2229 blackframe_filter_deps="gpl"
2230 boxblur_filter_deps="gpl"
2231 colormatrix_filter_deps="gpl"
2232 cropdetect_filter_deps="gpl"
2233 dctdnoiz_filter_deps="avcodec"
2234 dctdnoiz_filter_select="fft"
2235 delogo_filter_deps="gpl"
2236 deshake_filter_deps="avcodec"
2237 deshake_filter_select="dsputil"
2238 drawtext_filter_deps="libfreetype"
2239 ebur128_filter_deps="gpl"
2240 flite_filter_deps="libflite"
2241 frei0r_filter_deps="frei0r dlopen"
2242 frei0r_filter_extralibs='$ldl'
2243 frei0r_src_filter_deps="frei0r dlopen"
2244 frei0r_src_filter_extralibs='$ldl'
2245 geq_filter_deps="gpl"
2246 histeq_filter_deps="gpl"
2247 hqdn3d_filter_deps="gpl"
2248 interlace_filter_deps="gpl"
2249 kerndeint_filter_deps="gpl"
2250 ladspa_filter_deps="ladspa dlopen"
2251 mcdeint_filter_deps="avcodec gpl"
2252 movie_filter_deps="avcodec avformat"
2253 mp_filter_deps="gpl avcodec swscale inline_asm"
2254 mpdecimate_filter_deps="gpl avcodec"
2255 mptestsrc_filter_deps="gpl"
2256 negate_filter_deps="lut_filter"
2257 perspective_filter_deps="gpl"
2258 resample_filter_deps="avresample"
2259 ocv_filter_deps="libopencv"
2260 owdenoise_filter_deps="gpl"
2261 pan_filter_deps="swresample"
2262 phase_filter_deps="gpl"
2263 pp_filter_deps="gpl postproc"
2264 pullup_filter_deps="gpl"
2265 removelogo_filter_deps="avcodec avformat swscale"
2266 sab_filter_deps="gpl swscale"
2267 scale_filter_deps="swscale"
2268 smartblur_filter_deps="gpl swscale"
2269 showspectrum_filter_deps="avcodec"
2270 showspectrum_filter_select="rdft"
2271 spp_filter_deps="gpl avcodec"
2272 spp_filter_select="fft"
2273 stereo3d_filter_deps="gpl"
2274 subtitles_filter_deps="avformat avcodec libass"
2275 super2xsai_filter_deps="gpl"
2276 tinterlace_filter_deps="gpl"
2277 vidstabdetect_filter_deps="libvidstab"
2278 vidstabtransform_filter_deps="libvidstab"
2279 yadif_filter_deps="gpl"
2280 pixfmts_super2xsai_test_deps="super2xsai_filter"
2281 tinterlace_merge_test_deps="tinterlace_filter"
2282 tinterlace_pad_test_deps="tinterlace_filter"
2283 zmq_filter_deps="libzmq"
2284
2285 # examples
2286 decoding_encoding_example_deps="avcodec avutil"
2287 demuxing_decoding_example_deps="avcodec avformat avutil"
2288 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2289 filtering_video_example_deps="avfilter avcodec avformat avutil"
2290 metadata_example_deps="avformat avutil"
2291 muxing_example_deps="avcodec avformat avutil swscale"
2292 resampling_audio_example_deps="avutil swresample"
2293 scaling_video_example_deps="avutil swscale"
2294 transcode_aac_example_deps="avcodec avformat swresample"
2295
2296 # libraries
2297 avcodec_deps="avutil"
2298 avdevice_deps="avutil avcodec avformat"
2299 avfilter_deps="avutil"
2300 avformat_deps="avutil avcodec"
2301 avresample_deps="avutil"
2302 postproc_deps="avutil gpl"
2303 swscale_deps="avutil"
2304
2305 # programs
2306 ffmpeg_deps="avcodec avfilter avformat swresample"
2307 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2308                null_filter
2309                setpts_filter trim_filter"
2310 ffplay_deps="avcodec avformat swscale swresample sdl"
2311 ffplay_select="rdft crop_filter"
2312 ffprobe_deps="avcodec avformat"
2313 ffserver_deps="avformat fork sarestart"
2314 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2315 ffserver_extralibs='$ldl'
2316
2317 # documentation
2318 podpages_deps="perl"
2319 manpages_deps="perl pod2man"
2320 htmlpages_deps="texi2html"
2321 txtpages_deps="makeinfo"
2322 doc_deps_any="manpages htmlpages podpages txtpages"
2323
2324 # default parameters
2325
2326 logfile="config.log"
2327
2328 # installation paths
2329 prefix_default="/usr/local"
2330 bindir_default='${prefix}/bin'
2331 datadir_default='${prefix}/share/ffmpeg'
2332 docdir_default='${prefix}/share/doc/ffmpeg'
2333 incdir_default='${prefix}/include'
2334 libdir_default='${prefix}/lib'
2335 mandir_default='${prefix}/share/man'
2336 shlibdir_default="$libdir_default"
2337
2338 # toolchain
2339 ar_default="ar"
2340 cc_default="gcc"
2341 cxx_default="g++"
2342 host_cc_default="gcc"
2343 cp_f="cp -f"
2344 install="install"
2345 ln_s="ln -s -f"
2346 nm_default="nm -g"
2347 objformat="elf"
2348 pkg_config_default=pkg-config
2349 ranlib="ranlib"
2350 strip_default="strip"
2351 yasmexe_default="yasm"
2352
2353 nogas=":"
2354
2355 # machine
2356 arch_default=$(uname -m)
2357 cpu="generic"
2358
2359 # OS
2360 target_os_default=$(tolower $(uname -s))
2361 host_os=$target_os_default
2362
2363 # configurable options
2364 enable $PROGRAM_LIST
2365 enable $DOCUMENT_LIST
2366 enable $EXAMPLE_LIST
2367 enable $(filter_out avresample $LIBRARY_LIST)
2368 enable stripping
2369
2370 enable asm
2371 enable debug
2372 enable doc
2373 enable optimizations
2374 enable runtime_cpudetect
2375 enable safe_bitstream_reader
2376 enable static
2377 enable swscale_alpha
2378
2379 # Enable hwaccels by default.
2380 enable dxva2 vaapi vdpau
2381
2382 # build settings
2383 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2384 LIBPREF="lib"
2385 LIBSUF=".a"
2386 FULLNAME='$(NAME)$(BUILDSUF)'
2387 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2388 SLIBPREF="lib"
2389 SLIBSUF=".so"
2390 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2391 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2392 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2393 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2394 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2395 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2396
2397 asflags_filter=echo
2398 cflags_filter=echo
2399 ldflags_filter=echo
2400
2401 AS_C='-c'
2402 AS_O='-o $@'
2403 CC_C='-c'
2404 CC_E='-E -o $@'
2405 CC_O='-o $@'
2406 CXX_C='-c'
2407 CXX_O='-o $@'
2408 LD_O='-o $@'
2409 LD_LIB='-l%'
2410 LD_PATH='-L'
2411 HOSTCC_C='-c'
2412 HOSTCC_O='-o $@'
2413 HOSTLD_O='-o $@'
2414
2415 host_cflags='-O3 -g'
2416 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2417 host_libs='-lm'
2418 host_cflags_filter=echo
2419 host_ldflags_filter=echo
2420
2421 target_path='$(CURDIR)'
2422
2423 # since the object filename is not given with the -MM flag, the compiler
2424 # is only able to print the basename, and we must add the path ourselves
2425 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2426 DEPFLAGS='-MM'
2427
2428 # find source path
2429 if test -f configure; then
2430     source_path=.
2431 else
2432     source_path=$(cd $(dirname "$0"); pwd)
2433     echo "$source_path" | grep -q '[[:blank:]]' &&
2434         die "Out of tree builds are impossible with whitespace in source path."
2435     test -e "$source_path/config.h" &&
2436         die "Out of tree builds are impossible with config.h in source dir."
2437 fi
2438
2439 for v in "$@"; do
2440     r=${v#*=}
2441     l=${v%"$r"}
2442     r=$(sh_quote "$r")
2443     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2444 done
2445
2446 find_things(){
2447     thing=$1
2448     pattern=$2
2449     file=$source_path/$3
2450     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2451 }
2452
2453 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2454 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2455 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2456 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2457 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2458 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2459 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2460 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2461 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2462 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2463 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2464
2465 ALL_COMPONENTS="
2466     $BSF_LIST
2467     $DECODER_LIST
2468     $DEMUXER_LIST
2469     $ENCODER_LIST
2470     $FILTER_LIST
2471     $HWACCEL_LIST
2472     $INDEV_LIST
2473     $MUXER_LIST
2474     $OUTDEV_LIST
2475     $PARSER_LIST
2476     $PROTOCOL_LIST
2477 "
2478
2479 for n in $COMPONENT_LIST; do
2480     v=$(toupper ${n%s})_LIST
2481     eval enable \$$v
2482     eval ${n}_if_any="\$$v"
2483 done
2484
2485 enable $ARCH_EXT_LIST
2486
2487 die_unknown(){
2488     echo "Unknown option \"$1\"."
2489     echo "See $0 --help for available options."
2490     exit 1
2491 }
2492
2493 print_3_columns() {
2494     cat | tr ' ' '\n' | sort | pr -r -3 -t
2495 }
2496
2497 show_list() {
2498     suffix=_$1
2499     shift
2500     echo $* | sed s/$suffix//g | print_3_columns
2501     exit 0
2502 }
2503
2504 rand_list(){
2505     IFS=', '
2506     set -- $*
2507     unset IFS
2508     for thing; do
2509         comp=${thing%:*}
2510         prob=${thing#$comp}
2511         prob=${prob#:}
2512         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2513         echo "prob ${prob:-0.5}"
2514         printf '%s\n' $comp
2515     done
2516 }
2517
2518 do_random(){
2519     action=$1
2520     shift
2521     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2522     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2523 }
2524
2525 for opt do
2526     optval="${opt#*=}"
2527     case "$opt" in
2528         --extra-ldflags=*)
2529             add_ldflags $optval
2530         ;;
2531         --extra-libs=*)
2532             add_extralibs $optval
2533         ;;
2534         --disable-devices)
2535             disable $INDEV_LIST $OUTDEV_LIST
2536         ;;
2537         --enable-debug=*)
2538             debuglevel="$optval"
2539         ;;
2540         --disable-programs)
2541             disable $PROGRAM_LIST
2542         ;;
2543         --disable-everything)
2544             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2545         ;;
2546         --disable-all)
2547             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2548             disable $LIBRARY_LIST $PROGRAM_LIST doc
2549         ;;
2550         --enable-random|--disable-random)
2551             action=${opt%%-random}
2552             do_random ${action#--} $COMPONENT_LIST
2553         ;;
2554         --enable-random=*|--disable-random=*)
2555             action=${opt%%-random=*}
2556             do_random ${action#--} $optval
2557         ;;
2558         --enable-*=*|--disable-*=*)
2559             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2560             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2561             eval list=\$$(toupper $thing)_LIST
2562             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2563             list=$(filter "$name" $list)
2564             [ "$list" = "" ] && warn "Option $opt did not match anything"
2565             $action $list
2566         ;;
2567         --enable-?*|--disable-?*)
2568             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2569             if is_in $option $COMPONENT_LIST; then
2570                 test $action = disable && action=unset
2571                 eval $action \$$(toupper ${option%s})_LIST
2572             elif is_in $option $CMDLINE_SELECT; then
2573                 $action $option
2574             else
2575                 die_unknown $opt
2576             fi
2577         ;;
2578         --list-*)
2579             NAME="${opt#--list-}"
2580             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2581             NAME=${NAME%s}
2582             eval show_list $NAME \$$(toupper $NAME)_LIST
2583         ;;
2584         --help|-h) show_help
2585         ;;
2586         --fatal-warnings) enable fatal_warnings
2587         ;;
2588         *)
2589             optname="${opt%%=*}"
2590             optname="${optname#--}"
2591             optname=$(echo "$optname" | sed 's/-/_/g')
2592             if is_in $optname $CMDLINE_SET; then
2593                 eval $optname='$optval'
2594             elif is_in $optname $CMDLINE_APPEND; then
2595                 append $optname "$optval"
2596             else
2597                 die_unknown $opt
2598             fi
2599         ;;
2600     esac
2601 done
2602
2603 disabled logging && logfile=/dev/null
2604
2605 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2606 set >> $logfile
2607
2608 test -n "$cross_prefix" && enable cross_compile
2609
2610 if enabled cross_compile; then
2611     test -n "$arch" && test -n "$target_os" ||
2612         die "Must specify target arch and OS when cross-compiling"
2613 fi
2614
2615 ar_default="${cross_prefix}${ar_default}"
2616 cc_default="${cross_prefix}${cc_default}"
2617 cxx_default="${cross_prefix}${cxx_default}"
2618 nm_default="${cross_prefix}${nm_default}"
2619 pkg_config_default="${cross_prefix}${pkg_config_default}"
2620 ranlib="${cross_prefix}${ranlib}"
2621 strip_default="${cross_prefix}${strip_default}"
2622
2623 sysinclude_default="${sysroot}/usr/include"
2624
2625 test -n "$valgrind" && toolchain="valgrind-memcheck"
2626
2627 case "$toolchain" in
2628     clang-asan)
2629         cc_default="clang"
2630         add_cflags  -fsanitize=address
2631         add_ldflags -fsanitize=address
2632     ;;
2633     clang-tsan)
2634         cc_default="clang"
2635         add_cflags  -fsanitize=thread -pie
2636         add_ldflags -fsanitize=thread -pie
2637     ;;
2638     gcc-asan)
2639         cc_default="gcc"
2640         add_cflags  -fsanitize=address
2641         add_ldflags -fsanitize=address
2642     ;;
2643     gcc-tsan)
2644         cc_default="gcc"
2645         add_cflags  -fsanitize=thread -pie -fPIC
2646         add_ldflags -fsanitize=thread -pie -fPIC
2647     ;;
2648     valgrind-massif)
2649         target_exec_default=${valgrind:-"valgrind"}
2650         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"
2651     ;;
2652     valgrind-memcheck)
2653         target_exec_default=${valgrind:-"valgrind"}
2654         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2655     ;;
2656     msvc)
2657         # Check whether the current MSVC version needs the C99 converter.
2658         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2659         # support enough of C99 to build ffmpeg. Default to the new
2660         # behaviour if the regexp was unable to match anything, since this
2661         # successfully parses the version number of existing supported
2662         # versions that require the converter (MSVC 2010 and 2012).
2663         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2664         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2665             cc_default="cl"
2666         else
2667             cc_default="c99wrap cl"
2668         fi
2669         ld_default="link"
2670         nm_default="dumpbin -symbols"
2671         ar_default="lib"
2672         target_os_default="win32"
2673         # Use a relative path for TMPDIR. This makes sure all the
2674         # ffconf temp files are written with a relative path, avoiding
2675         # issues with msys/win32 path conversion for MSVC parameters
2676         # such as -Fo<file> or -out:<file>.
2677         TMPDIR=.
2678     ;;
2679     icl)
2680         cc_default="icl"
2681         ld_default="xilink"
2682         nm_default="dumpbin -symbols"
2683         ar_default="xilib"
2684         target_os_default="win32"
2685         TMPDIR=.
2686     ;;
2687     gcov)
2688         add_cflags  -fprofile-arcs -ftest-coverage
2689         add_ldflags -fprofile-arcs -ftest-coverage
2690     ;;
2691     hardened)
2692         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2693         add_ldflags -Wl,-z,relro -Wl,-z,now
2694     ;;
2695     ?*)
2696         die "Unknown toolchain $toolchain"
2697     ;;
2698 esac
2699
2700 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2701 enabled cross_compile || host_cc_default=$cc
2702 set_default host_cc
2703
2704 if ! $pkg_config --version >/dev/null 2>&1; then
2705     warn "$pkg_config not found, library detection may fail."
2706     pkg_config=false
2707 fi
2708
2709 exesuf() {
2710     case $1 in
2711         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2712     esac
2713 }
2714
2715 EXESUF=$(exesuf $target_os)
2716 HOSTEXESUF=$(exesuf $host_os)
2717
2718 # set temporary file name
2719 : ${TMPDIR:=$TEMPDIR}
2720 : ${TMPDIR:=$TMP}
2721 : ${TMPDIR:=/tmp}
2722
2723 if [ -n "$tempprefix" ] ; then
2724     mktemp(){
2725         echo $tempprefix.${HOSTNAME}.${UID}
2726     }
2727 elif ! check_cmd mktemp -u XXXXXX; then
2728     # simple replacement for missing mktemp
2729     # NOT SAFE FOR GENERAL USE
2730     mktemp(){
2731         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2732     }
2733 fi
2734
2735 tmpfile(){
2736     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2737         (set -C; exec > $tmp) 2>/dev/null ||
2738         die "Unable to create temporary file in $TMPDIR."
2739     append TMPFILES $tmp
2740     eval $1=$tmp
2741 }
2742
2743 trap 'rm -f -- $TMPFILES' EXIT
2744
2745 tmpfile TMPASM .asm
2746 tmpfile TMPC   .c
2747 tmpfile TMPCPP .cpp
2748 tmpfile TMPE   $EXESUF
2749 tmpfile TMPH   .h
2750 tmpfile TMPO   .o
2751 tmpfile TMPS   .S
2752 tmpfile TMPSH  .sh
2753 tmpfile TMPV   .ver
2754
2755 unset -f mktemp
2756
2757 chmod +x $TMPE
2758
2759 # make sure we can execute files in $TMPDIR
2760 cat > $TMPSH 2>> $logfile <<EOF
2761 #! /bin/sh
2762 EOF
2763 chmod +x $TMPSH >> $logfile 2>&1
2764 if ! $TMPSH >> $logfile 2>&1; then
2765     cat <<EOF
2766 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2767 variable to another directory and make sure that it is not mounted noexec.
2768 EOF
2769     die "Sanity test failed."
2770 fi
2771
2772 ccc_flags(){
2773     for flag; do
2774         case $flag in
2775             -std=c99)           echo -c99                       ;;
2776             -mcpu=*)            echo -arch ${flag#*=}           ;;
2777             -mieee)             echo -ieee                      ;;
2778             -O*|-fast)          echo $flag                      ;;
2779             -fno-math-errno)    echo -assume nomath_errno       ;;
2780             -g)                 echo -g3                        ;;
2781             -Wall)              echo -msg_enable level2         ;;
2782             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2783             -Wl,*)              echo $flag                      ;;
2784             -f*|-W*)                                            ;;
2785             *)                  echo $flag                      ;;
2786         esac
2787    done
2788 }
2789
2790 cparser_flags(){
2791     for flag; do
2792         case $flag in
2793             -Wno-switch)             echo -Wno-switch-enum ;;
2794             -Wno-format-zero-length) ;;
2795             -Wdisabled-optimization) ;;
2796             -Wno-pointer-sign)       echo -Wno-other ;;
2797             *)                       echo $flag ;;
2798         esac
2799     done
2800 }
2801
2802 msvc_common_flags(){
2803     for flag; do
2804         case $flag in
2805             # In addition to specifying certain flags under the compiler
2806             # specific filters, they must be specified here as well or else the
2807             # generic catch all at the bottom will print the original flag.
2808             -Wall)                ;;
2809             -std=c99)             ;;
2810             # Common flags
2811             -fomit-frame-pointer) ;;
2812             -g)                   echo -Z7 ;;
2813             -fno-math-errno)      ;;
2814             -fno-common)          ;;
2815             -fno-signed-zeros)    ;;
2816             -fPIC)                ;;
2817             -mthumb)              ;;
2818             -march=*)             ;;
2819             -lz)                  echo zlib.lib ;;
2820             -lavifil32)           echo vfw32.lib ;;
2821             -lavicap32)           echo vfw32.lib user32.lib ;;
2822             -l*)                  echo ${flag#-l}.lib ;;
2823             *)                    echo $flag ;;
2824         esac
2825     done
2826 }
2827
2828 msvc_flags(){
2829     msvc_common_flags "$@"
2830     for flag; do
2831         case $flag in
2832             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2833                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2834                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2835                                        -wd4554 \
2836                                        -wd4273 ;;
2837         esac
2838     done
2839 }
2840
2841 icl_flags(){
2842     msvc_common_flags "$@"
2843     for flag; do
2844         case $flag in
2845             # Despite what Intel's documentation says -Wall, which is supported
2846             # on Windows, does enable remarks so disable them here.
2847             -Wall)                echo $flag -Qdiag-disable:remark ;;
2848             -std=c99)             echo -Qstd=c99 ;;
2849         esac
2850     done
2851 }
2852
2853 pgi_flags(){
2854     for flag; do
2855         case $flag in
2856             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2857             -fomit-frame-pointer) echo -Mnoframe ;;
2858             -g)                   echo -gopt ;;
2859             *)                    echo $flag ;;
2860         esac
2861     done
2862 }
2863
2864 suncc_flags(){
2865     for flag; do
2866         case $flag in
2867             -march=*|-mcpu=*)
2868                 case "${flag#*=}" in
2869                     native)                   echo -xtarget=native       ;;
2870                     v9|niagara)               echo -xarch=sparc          ;;
2871                     ultrasparc)               echo -xarch=sparcvis       ;;
2872                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2873                     i586|pentium)             echo -xchip=pentium        ;;
2874                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2875                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2876                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2877                     pentium4*)          echo -xtarget=pentium4           ;;
2878                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2879                     *-sse3)             echo -xarch=sse3                 ;;
2880                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2881                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2882                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2883                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2884                     bdver*)                    echo -xarch=avx           ;;
2885                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2886                     k8|opteron|athlon64|athlon-fx)
2887                                                echo -xarch=sse2a         ;;
2888                     athlon*)                   echo -xarch=pentium_proa  ;;
2889                 esac
2890                 ;;
2891             -std=c99)             echo -xc99              ;;
2892             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2893             -fPIC)                echo -KPIC -xcode=pic32 ;;
2894             -W*,*)                echo $flag              ;;
2895             -f*-*|-W*|-mimpure-text)                      ;;
2896             -shared)              echo -G                 ;;
2897             *)                    echo $flag              ;;
2898         esac
2899     done
2900 }
2901
2902 tms470_flags(){
2903     for flag; do
2904         case $flag in
2905             -march=*|-mcpu=*)
2906                 case "${flag#*=}" in
2907                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2908                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2909                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2910                     armv6*|arm11*)          echo -mv=6   ;;
2911                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2912                                             echo -mv=5e  ;;
2913                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2914                 esac
2915                 ;;
2916             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2917             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2918             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2919             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2920             -msoft-float)   echo --float_support=vfplib       ;;
2921             -O[0-3]|-mf=*)  echo $flag                        ;;
2922             -g)             echo -g -mn                       ;;
2923             -pds=*)         echo $flag                        ;;
2924             -D*|-I*)        echo $flag                        ;;
2925             --gcc|--abi=*)  echo $flag                        ;;
2926             -me)            echo $flag                        ;;
2927         esac
2928     done
2929 }
2930
2931 probe_cc(){
2932     pfx=$1
2933     _cc=$2
2934
2935     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2936     unset _ld_o _ldflags _ld_lib _ld_path
2937     unset _depflags _DEPCMD _DEPFLAGS
2938     _flags_filter=echo
2939
2940     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2941         true # no-op to avoid reading stdin in following checks
2942     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2943         _type=llvm_gcc
2944         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2945         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2946         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2947         _cflags_speed='-O3'
2948         _cflags_size='-Os'
2949     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2950         _type=gcc
2951         gcc_version=$($_cc --version | head -n1)
2952         gcc_basever=$($_cc -dumpversion)
2953         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2954         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2955         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2956         if ! $_cc -dumpversion | grep -q '^2\.'; then
2957             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2958         fi
2959         _cflags_speed='-O3'
2960         _cflags_size='-Os'
2961     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2962         _type=icc
2963         _ident=$($_cc --version | head -n1)
2964         _depflags='-MMD'
2965         _cflags_speed='-O3'
2966         _cflags_size='-Os'
2967         _cflags_noopt='-O1'
2968     elif $_cc -v 2>&1 | grep -q xlc; then
2969         _type=xlc
2970         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2971         _cflags_speed='-O5'
2972         _cflags_size='-O5 -qcompact'
2973     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2974         _type=ccc
2975         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2976         _DEPFLAGS='-M'
2977         _cflags_speed='-fast'
2978         _cflags_size='-O1'
2979         _flags_filter=ccc_flags
2980     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2981         test -d "$sysroot" || die "No valid sysroot specified."
2982         _type=armcc
2983         _ident=$($_cc --vsn | head -n1)
2984         armcc_conf="$PWD/armcc.conf"
2985         $_cc --arm_linux_configure                 \
2986              --arm_linux_config_file="$armcc_conf" \
2987              --configure_sysroot="$sysroot"        \
2988              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2989              die "Error creating armcc configuration file."
2990         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2991         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2992         as_default="${cross_prefix}gcc"
2993         _depflags='-MMD'
2994         _cflags_speed='-O3'
2995         _cflags_size='-Os'
2996     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2997         _type=tms470
2998         _ident=$($_cc -version | head -n1 | tr -s ' ')
2999         _flags='--gcc --abi=eabi -me'
3000         _cc_e='-ppl -fe=$@'
3001         _cc_o='-fe=$@'
3002         _depflags='-ppa -ppd=$(@:.o=.d)'
3003         _cflags_speed='-O3 -mf=5'
3004         _cflags_size='-O3 -mf=2'
3005         _flags_filter=tms470_flags
3006     elif $_cc -v 2>&1 | grep -q clang; then
3007         _type=clang
3008         _ident=$($_cc --version | head -n1)
3009         _depflags='-MMD'
3010         _cflags_speed='-O3'
3011         _cflags_size='-Os'
3012     elif $_cc -V 2>&1 | grep -q Sun; then
3013         _type=suncc
3014         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3015         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3016         _DEPFLAGS='-xM1 -xc99'
3017         _ldflags='-std=c99'
3018         _cflags_speed='-O5'
3019         _cflags_size='-O5 -xspace'
3020         _flags_filter=suncc_flags
3021     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3022         _type=pathscale
3023         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3024         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3025         _cflags_speed='-O2'
3026         _cflags_size='-Os'
3027         _flags_filter='filter_out -Wdisabled-optimization'
3028     elif $_cc -v 2>&1 | grep -q Open64; then
3029         _type=open64
3030         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3031         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3032         _cflags_speed='-O2'
3033         _cflags_size='-Os'
3034         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3035     elif $_cc -V 2>&1 | grep -q Portland; then
3036         _type=pgi
3037         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3038         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3039         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3040         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3041         _cflags_noopt="-O"
3042         _flags_filter=pgi_flags
3043     elif $_cc 2>&1 | grep -q Microsoft; then
3044         _type=msvc
3045         _ident=$($cc 2>&1 | head -n1)
3046         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3047         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3048         _cflags_speed="-O2"
3049         _cflags_size="-O1"
3050         if $_cc 2>&1 | grep -q Linker; then
3051             _ld_o='-out:$@'
3052         else
3053             _ld_o='-Fe$@'
3054         fi
3055         _cc_o='-Fo$@'
3056         _cc_e='-P -Fi$@'
3057         _flags_filter=msvc_flags
3058         _ld_lib='lib%.a'
3059         _ld_path='-libpath:'
3060         _flags='-nologo'
3061         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3062         if [ $pfx = hostcc ]; then
3063             append _cflags -Dsnprintf=_snprintf
3064         fi
3065         disable stripping
3066     elif $_cc 2>&1 | grep -q Intel; then
3067         _type=icl
3068         _ident=$($cc 2>&1 | head -n1)
3069         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3070         # Not only is O3 broken on 13.x+ but it is slower on all previous
3071         # versions (tested) as well.
3072         _cflags_speed="-O2"
3073         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3074         if $_cc 2>&1 | grep -q Linker; then
3075             _ld_o='-out:$@'
3076         else
3077             _ld_o='-Fe$@'
3078         fi
3079         _cc_o='-Fo$@'
3080         _cc_e='-P'
3081         _flags_filter=icl_flags
3082         _ld_lib='lib%.a'
3083         _ld_path='-libpath:'
3084         # -Qdiag-error to make icl error when seeing certain unknown arguments
3085         _flags='-nologo -Qdiag-error:4044,10157'
3086         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3087         # with MSVC which enables it by default.
3088         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3089         if [ $pfx = hostcc ]; then
3090             append _cflags -Dsnprintf=_snprintf
3091         fi
3092     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3093         _type=cparser
3094         _ident=$($_cc --version | head -n1)
3095         _depflags='-MMD'
3096         _cflags_speed='-O4'
3097         _cflags_size='-O2'
3098         _flags_filter=cparser_flags
3099     fi
3100
3101     eval ${pfx}_type=\$_type
3102     eval ${pfx}_ident=\$_ident
3103 }
3104
3105 set_ccvars(){
3106     eval ${1}_C=\${_cc_c-\${${1}_C}}
3107     eval ${1}_E=\${_cc_e-\${${1}_E}}
3108     eval ${1}_O=\${_cc_o-\${${1}_O}}
3109
3110     if [ -n "$_depflags" ]; then
3111         eval ${1}_DEPFLAGS=\$_depflags
3112     else
3113         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3114         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3115         eval DEP${1}FLAGS=\$_flags
3116     fi
3117 }
3118
3119 probe_cc cc "$cc"
3120 cflags_filter=$_flags_filter
3121 cflags_speed=$_cflags_speed
3122 cflags_size=$_cflags_size
3123 cflags_noopt=$_cflags_noopt
3124 add_cflags $_flags $_cflags
3125 cc_ldflags=$_ldflags
3126 set_ccvars CC
3127
3128 probe_cc hostcc "$host_cc"
3129 host_cflags_filter=$_flags_filter
3130 add_host_cflags  $_flags $_cflags
3131 set_ccvars HOSTCC
3132
3133 test -n "$cc_type" && enable $cc_type ||
3134     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3135
3136 : ${as_default:=$cc}
3137 : ${dep_cc_default:=$cc}
3138 : ${ld_default:=$cc}
3139 : ${host_ld_default:=$host_cc}
3140 set_default ar as dep_cc ld host_ld
3141
3142 probe_cc as "$as"
3143 asflags_filter=$_flags_filter
3144 add_asflags $_flags $_cflags
3145 set_ccvars AS
3146
3147 probe_cc ld "$ld"
3148 ldflags_filter=$_flags_filter
3149 add_ldflags $_flags $_ldflags
3150 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3151 LD_O=${_ld_o-$LD_O}
3152 LD_LIB=${_ld_lib-$LD_LIB}
3153 LD_PATH=${_ld_path-$LD_PATH}
3154
3155 probe_cc hostld "$host_ld"
3156 host_ldflags_filter=$_flags_filter
3157 add_host_ldflags $_flags $_ldflags
3158 HOSTLD_O=${_ld_o-$HOSTLD_O}
3159
3160 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3161     probe_cc depcc "$dep_cc"
3162     CCDEP=${_DEPCMD:-$DEPCMD}
3163     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3164     DEPCCFLAGS=$_flags
3165 fi
3166
3167 if $ar 2>&1 | grep -q Microsoft; then
3168     arflags="-nologo"
3169     ar_o='-out:$@'
3170 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3171     arflags="rq"
3172     ar_o='$@'
3173 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3174     arflags='-Xany -r -c'
3175     ar_o='$@'
3176 else
3177     arflags="rc"
3178     ar_o='$@'
3179 fi
3180
3181 add_cflags $extra_cflags
3182 add_cxxflags $extra_cxxflags
3183 add_asflags $extra_cflags
3184
3185 if test -n "$sysroot"; then
3186     case "$cc_type" in
3187         gcc|llvm_gcc|clang)
3188             add_cppflags --sysroot="$sysroot"
3189             add_ldflags --sysroot="$sysroot"
3190         ;;
3191         tms470)
3192             add_cppflags -I"$sysinclude"
3193             add_ldflags  --sysroot="$sysroot"
3194         ;;
3195     esac
3196 fi
3197
3198 if test "$cpu" = host; then
3199     enabled cross_compile &&
3200         die "--cpu=host makes no sense when cross-compiling."
3201
3202     case "$cc_type" in
3203         gcc|llvm_gcc)
3204             check_native(){
3205                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3206                 sed -n "/cc1.*$1=/{
3207                             s/.*$1=\\([^ ]*\\).*/\\1/
3208                             p
3209                             q
3210                         }" $TMPE
3211             }
3212             cpu=$(check_native -march || check_native -mcpu)
3213         ;;
3214     esac
3215
3216     test "${cpu:-host}" = host &&
3217         die "--cpu=host not supported with compiler $cc"
3218 fi
3219
3220 # Deal with common $arch aliases
3221 case "$arch" in
3222     aarch64|arm64)
3223         arch="aarch64"
3224     ;;
3225     arm*|iPad*|iPhone*)
3226         arch="arm"
3227     ;;
3228     mips*|IP*)
3229         arch="mips"
3230     ;;
3231     parisc*|hppa*)
3232         arch="parisc"
3233     ;;
3234     "Power Macintosh"|ppc*|powerpc*)
3235         arch="ppc"
3236     ;;
3237     s390|s390x)
3238         arch="s390"
3239     ;;
3240     sh4|sh)
3241         arch="sh4"
3242     ;;
3243     sun4u|sparc*)
3244         arch="sparc"
3245     ;;
3246     tilegx|tile-gx)
3247         arch="tilegx"
3248     ;;
3249     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3250         arch="x86"
3251     ;;
3252 esac
3253
3254 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3255 enable $arch
3256
3257 # Add processor-specific flags
3258 if enabled aarch64; then
3259
3260     case $cpu in
3261         armv*)
3262             cpuflags="-march=$cpu"
3263         ;;
3264         *)
3265             cpuflags="-mcpu=$cpu"
3266         ;;
3267     esac
3268
3269 elif enabled alpha; then
3270
3271     cpuflags="-mcpu=$cpu"
3272
3273 elif enabled arm; then
3274
3275     check_arm_arch() {
3276         check_cpp_condition stddef.h \
3277             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3278             $cpuflags
3279     }
3280
3281     probe_arm_arch() {
3282         if   check_arm_arch 4;        then echo armv4;
3283         elif check_arm_arch 4T;       then echo armv4t;
3284         elif check_arm_arch 5;        then echo armv5;
3285         elif check_arm_arch 5E;       then echo armv5e;
3286         elif check_arm_arch 5T;       then echo armv5t;
3287         elif check_arm_arch 5TE;      then echo armv5te;
3288         elif check_arm_arch 5TEJ;     then echo armv5te;
3289         elif check_arm_arch 6;        then echo armv6;
3290         elif check_arm_arch 6J;       then echo armv6j;
3291         elif check_arm_arch 6K;       then echo armv6k;
3292         elif check_arm_arch 6Z;       then echo armv6z;
3293         elif check_arm_arch 6ZK;      then echo armv6zk;
3294         elif check_arm_arch 6T2;      then echo armv6t2;
3295         elif check_arm_arch 7;        then echo armv7;
3296         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3297         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3298         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3299         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3300         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3301         fi
3302     }
3303
3304     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3305
3306     case $cpu in
3307         armv*)
3308             cpuflags="-march=$cpu"
3309             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3310         ;;
3311         *)
3312             cpuflags="-mcpu=$cpu"
3313             case $cpu in
3314                 cortex-a*)                               subarch=armv7a  ;;
3315                 cortex-r*)                               subarch=armv7r  ;;
3316                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3317                 arm11*)                                  subarch=armv6   ;;
3318                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3319                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3320                 *)                             subarch=$(probe_arm_arch) ;;
3321             esac
3322         ;;
3323     esac
3324
3325     case "$subarch" in
3326         armv5t*)    enable fast_clz                ;;
3327         armv[6-8]*) enable fast_clz fast_unaligned ;;
3328     esac
3329
3330 elif enabled avr32; then
3331
3332     case $cpu in
3333         ap7[02]0[0-2])
3334             subarch="avr32_ap"
3335             cpuflags="-mpart=$cpu"
3336         ;;
3337         ap)
3338             subarch="avr32_ap"
3339             cpuflags="-march=$cpu"
3340         ;;
3341         uc3[ab]*)
3342             subarch="avr32_uc"
3343             cpuflags="-mcpu=$cpu"
3344         ;;
3345         uc)
3346             subarch="avr32_uc"
3347             cpuflags="-march=$cpu"
3348         ;;
3349     esac
3350
3351 elif enabled bfin; then
3352
3353     cpuflags="-mcpu=$cpu"
3354
3355 elif enabled mips; then
3356
3357     cpuflags="-march=$cpu"
3358
3359     case $cpu in
3360         24kc)
3361             disable mipsfpu
3362             disable mipsdspr1
3363             disable mipsdspr2
3364         ;;
3365         24kf*)
3366             disable mipsdspr1
3367             disable mipsdspr2
3368         ;;
3369         24kec|34kc|1004kc)
3370             disable mipsfpu
3371             disable mipsdspr2
3372         ;;
3373         24kef*|34kf*|1004kf*)
3374             disable mipsdspr2
3375         ;;
3376         74kc)
3377             disable mipsfpu
3378         ;;
3379     esac
3380
3381 elif enabled ppc; then
3382
3383     case $(tolower $cpu) in
3384         601|ppc601|powerpc601)
3385             cpuflags="-mcpu=601"
3386             disable altivec
3387         ;;
3388         603*|ppc603*|powerpc603*)
3389             cpuflags="-mcpu=603"
3390             disable altivec
3391         ;;
3392         604*|ppc604*|powerpc604*)
3393             cpuflags="-mcpu=604"
3394             disable altivec
3395         ;;
3396         g3|75*|ppc75*|powerpc75*)
3397             cpuflags="-mcpu=750"
3398             disable altivec
3399         ;;
3400         g4|745*|ppc745*|powerpc745*)
3401             cpuflags="-mcpu=7450"
3402         ;;
3403         74*|ppc74*|powerpc74*)
3404             cpuflags="-mcpu=7400"
3405         ;;
3406         g5|970|ppc970|powerpc970)
3407             cpuflags="-mcpu=970"
3408         ;;
3409         power[3-7]*)
3410             cpuflags="-mcpu=$cpu"
3411         ;;
3412         cell)
3413             cpuflags="-mcpu=cell"
3414             enable ldbrx
3415         ;;
3416         e500mc)
3417             cpuflags="-mcpu=e500mc"
3418             disable altivec
3419         ;;
3420         e500v2)
3421             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3422             disable altivec
3423         ;;
3424         e500)
3425             cpuflags="-mcpu=8540 -mhard-float"
3426             disable altivec
3427         ;;
3428     esac
3429
3430 elif enabled sparc; then
3431
3432     case $cpu in
3433         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3434             cpuflags="-mcpu=$cpu"
3435             disable vis
3436         ;;
3437         ultrasparc*|niagara[234])
3438             cpuflags="-mcpu=$cpu"
3439         ;;
3440     esac
3441
3442 elif enabled x86; then
3443
3444     case $cpu in
3445         i[345]86|pentium)
3446             cpuflags="-march=$cpu"
3447             disable mmx
3448         ;;
3449         # targets that do NOT support nopl and conditional mov (cmov)
3450         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3451             cpuflags="-march=$cpu"
3452             disable i686
3453         ;;
3454         # targets that do support nopl and conditional mov (cmov)
3455         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3456             cpuflags="-march=$cpu"
3457             enable i686
3458             enable fast_cmov
3459         ;;
3460         # targets that do support conditional mov but on which it's slow
3461         pentium4|pentium4m|prescott|nocona)
3462             cpuflags="-march=$cpu"
3463             enable i686
3464             disable fast_cmov
3465         ;;
3466     esac
3467
3468 fi
3469
3470 if [ "$cpu" != generic ]; then
3471     add_cflags  $cpuflags
3472     add_asflags $cpuflags
3473 fi
3474
3475 # compiler sanity check
3476 check_exec <<EOF
3477 int main(void){ return 0; }
3478 EOF
3479 if test "$?" != 0; then
3480     echo "$cc is unable to create an executable file."
3481     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3482         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3483         echo "Only do this if you know what cross compiling means."
3484     fi
3485     die "C compiler test failed."
3486 fi
3487
3488 add_cppflags -D_ISOC99_SOURCE
3489 add_cxxflags -D__STDC_CONSTANT_MACROS
3490 check_cflags -std=c99
3491 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3492 #include <stdlib.h>
3493 EOF
3494 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3495 #include <stdlib.h>
3496 EOF
3497
3498 check_host_cflags -std=c99
3499 check_host_cflags -Wall
3500
3501 check_64bit(){
3502     arch32=$1
3503     arch64=$2
3504     expr=$3
3505     check_code cc "" "int test[2*($expr) - 1]" &&
3506         subarch=$arch64 || subarch=$arch32
3507 }
3508
3509 case "$arch" in
3510     aarch64|alpha|ia64)
3511         spic=$shared
3512     ;;
3513     mips)
3514         check_64bit mips mips64 '_MIPS_SIM > 1'
3515         spic=$shared
3516     ;;
3517     parisc)
3518         check_64bit parisc parisc64 'sizeof(void *) > 4'
3519         spic=$shared
3520     ;;
3521     ppc)
3522         check_64bit ppc ppc64 'sizeof(void *) > 4'
3523         spic=$shared
3524     ;;
3525     sparc)
3526         check_64bit sparc sparc64 'sizeof(void *) > 4'
3527         spic=$shared
3528     ;;
3529     x86)
3530         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3531         if test "$subarch" = "x86_64"; then
3532             spic=$shared
3533         fi
3534     ;;
3535     ppc)
3536         check_cc <<EOF && subarch="ppc64"
3537         int test[(int)sizeof(char*) - 7];
3538 EOF
3539     ;;
3540 esac
3541
3542 enable $subarch
3543 enabled spic && enable_weak pic
3544
3545 # OS specific
3546 case $target_os in
3547     aix)
3548         SHFLAGS=-shared
3549         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3550         enabled shared && add_ldflags -Wl,-brtl
3551         ;;
3552     haiku)
3553         prefix_default="/boot/common"
3554         network_extralibs="-lnetwork"
3555         host_libs=
3556         ;;
3557     sunos)
3558         SHFLAGS='-shared -Wl,-h,$$(@F)'
3559         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3560         network_extralibs="-lsocket -lnsl"
3561         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3562         # When using suncc to build, the Solaris linker will mark
3563         # an executable with each instruction set encountered by
3564         # the Solaris assembler.  As our libraries contain their own
3565         # guards for processor-specific code, instead suppress
3566         # generation of the HWCAPS ELF section on Solaris x86 only.
3567         enabled_all suncc x86 &&
3568             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3569             add_ldflags -Wl,-M,mapfile
3570         nm_default='nm -P -g'
3571         ;;
3572     netbsd)
3573         disable symver
3574         oss_indev_extralibs="-lossaudio"
3575         oss_outdev_extralibs="-lossaudio"
3576         enabled gcc || check_ldflags -Wl,-zmuldefs
3577         ;;
3578     openbsd|bitrig)
3579         disable symver
3580         SHFLAGS='-shared'
3581         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3582         SLIB_INSTALL_LINKS=
3583         oss_indev_extralibs="-lossaudio"
3584         oss_outdev_extralibs="-lossaudio"
3585         ;;
3586     dragonfly)
3587         disable symver
3588         ;;
3589     freebsd)
3590         ;;
3591     bsd/os)
3592         add_extralibs -lpoll -lgnugetopt
3593         strip="strip -d"
3594         ;;
3595     darwin)
3596         gas="gas-preprocessor.pl $cc"
3597         enabled ppc && add_asflags -force_cpusubtype_ALL
3598         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3599         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3600         strip="${strip} -x"
3601         add_ldflags -Wl,-dynamic,-search_paths_first
3602         SLIBSUF=".dylib"
3603         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3604         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3605         objformat="macho"
3606         enabled x86_64 && objformat="macho64"
3607         enabled_any pic shared ||
3608             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3609         ;;
3610     mingw32*)
3611         if test $target_os = "mingw32ce"; then
3612             disable network
3613         else
3614             target_os=mingw32
3615         fi
3616         LIBTARGET=i386
3617         if enabled x86_64; then
3618             LIBTARGET="i386:x86-64"
3619         elif enabled arm; then
3620             LIBTARGET=arm-wince
3621         fi
3622         check_ldflags -Wl,--nxcompat
3623         check_ldflags -Wl,--dynamicbase
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         dlltool="${cross_prefix}dlltool"
3630         if check_cmd lib.exe -list; then
3631             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3632             if enabled x86_64; then
3633                 LIBTARGET=x64
3634             fi
3635         elif check_cmd $dlltool --version; then
3636             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3637         fi
3638         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3639         SLIB_INSTALL_LINKS=
3640         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3641         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3642         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3643         objformat="win32"
3644         ranlib=:
3645         enable dos_paths
3646         ;;
3647     win32|win64)
3648         disable symver
3649         if enabled shared; then
3650             # Link to the import library instead of the normal static library
3651             # for shared libs.
3652             LD_LIB='%.lib'
3653             # Cannot build both shared and static libs with MSVC or icl.
3654             disable static
3655         fi
3656         shlibdir_default="$bindir_default"
3657         SLIBPREF=""
3658         SLIBSUF=".dll"
3659         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3660         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3661         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3662         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3663         SLIB_INSTALL_LINKS=
3664         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3665         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3666         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3667         objformat="win32"
3668         ranlib=:
3669         enable dos_paths
3670         ;;
3671     cygwin*)
3672         target_os=cygwin
3673         shlibdir_default="$bindir_default"
3674         SLIBPREF="cyg"
3675         SLIBSUF=".dll"
3676         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3677         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3678         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3679         SLIB_INSTALL_LINKS=
3680         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3681         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3682         objformat="win32"
3683         enable dos_paths
3684         ;;
3685     *-dos|freedos|opendos)
3686         network_extralibs="-lsocket"
3687         objformat="coff"
3688         enable dos_paths
3689         add_cppflags -U__STRICT_ANSI__
3690         ;;
3691     linux)
3692         enable dv1394
3693         ;;
3694     irix*)
3695         target_os=irix
3696         ranlib="echo ignoring ranlib"
3697         ;;
3698     os/2*)
3699         strip="lxlite -CS"
3700         ln_s="cp -f"
3701         objformat="aout"
3702         add_cppflags -D_GNU_SOURCE
3703         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3704         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3705         LIBSUF="_s.a"
3706         SLIBPREF=""
3707         SLIBSUF=".dll"
3708         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3709         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3710         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3711             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3712             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3713             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3714             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3715             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3716         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3717             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3718         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3719         enable dos_paths
3720         enable_weak os2threads
3721         ;;
3722     gnu/kfreebsd)
3723         add_cppflags -D_BSD_SOURCE
3724         ;;
3725     gnu)
3726         ;;
3727     qnx)
3728         add_cppflags -D_QNX_SOURCE
3729         network_extralibs="-lsocket"
3730         ;;
3731     symbian)
3732         SLIBSUF=".dll"
3733         enable dos_paths
3734         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3735         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3736         add_ldflags -Wl,--target1-abs,--no-undefined \
3737                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3738                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3739         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3740                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3741                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3742         ;;
3743     osf1)
3744         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3745         ;;
3746     minix)
3747         ;;
3748     plan9)
3749         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3750                      -D_REENTRANT_SOURCE        \
3751                      -D_RESEARCH_SOURCE         \
3752                      -DFD_SETSIZE=96            \
3753                      -DHAVE_SOCK_OPTS
3754         add_compat strtod.o strtod=avpriv_strtod
3755         network_extralibs='-lbsd'
3756         exeobjs=compat/plan9/main.o
3757         disable ffserver
3758         cp_f='cp'
3759         ;;
3760     none)
3761         ;;
3762     *)
3763         die "Unknown OS '$target_os'."
3764         ;;
3765 esac
3766
3767 # determine libc flavour
3768
3769 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3770 if check_cpp_condition features.h "defined __UCLIBC__"; then
3771     libc_type=uclibc
3772     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3773 elif check_cpp_condition features.h "defined __GLIBC__"; then
3774     libc_type=glibc
3775     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3776 # MinGW headers can be installed on Cygwin, so check for newlib first.
3777 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3778     libc_type=newlib
3779     add_cppflags -U__STRICT_ANSI__
3780 elif check_header _mingw.h; then
3781     libc_type=mingw
3782     check_cpp_condition _mingw.h \
3783         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3784             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3785         die "ERROR: MinGW runtime version must be >= 3.15."
3786     add_cppflags -U__STRICT_ANSI__
3787     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3788             __MINGW64_VERSION_MAJOR < 3"; then
3789         add_compat msvcrt/snprintf.o
3790         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3791     else
3792         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3793     fi
3794 elif check_func_headers stdlib.h _get_doserrno; then
3795     libc_type=msvcrt
3796     add_compat strtod.o strtod=avpriv_strtod
3797     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3798                                  _snprintf=avpriv_snprintf  \
3799                                  vsnprintf=avpriv_vsnprintf
3800     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3801     # 0x601 by default unless something else is set by the user.
3802     # This can easily lead to us detecting functions only present
3803     # in such new versions and producing binaries requiring windows 7.0.
3804     # Therefore explicitly set the default to XP unless the user has
3805     # set something else on the command line.
3806     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3807 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3808     libc_type=klibc
3809 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3810     libc_type=bionic
3811     add_compat strtod.o strtod=avpriv_strtod
3812 fi
3813
3814 test -n "$libc_type" && enable $libc_type
3815
3816 # hacks for compiler/libc/os combinations
3817
3818 if enabled_all tms470 glibc; then
3819     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3820     add_cppflags -D__USER_LABEL_PREFIX__=
3821     add_cppflags -D__builtin_memset=memset
3822     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3823     add_cflags   -pds=48    # incompatible redefinition of macro
3824 fi
3825
3826 if enabled_all ccc glibc; then
3827     add_ldflags -Wl,-z,now  # calls to libots crash without this
3828 fi
3829
3830 esc(){
3831     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3832 }
3833
3834 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3835
3836 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3837
3838 set_default $PATHS_LIST
3839 set_default nm
3840
3841 # we need to build at least one lib type
3842 if ! enabled_any static shared; then
3843     cat <<EOF
3844 At least one library type must be built.
3845 Specify --enable-static to build the static libraries or --enable-shared to
3846 build the shared libraries as well. To only build the shared libraries specify
3847 --disable-static in addition to --enable-shared.
3848 EOF
3849     exit 1;
3850 fi
3851
3852 # backward compatibility layer for incompatible_libav/fork_abi
3853 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3854 enabled incompatible_libav_abi && enable incompatible_fork_abi
3855
3856 die_license_disabled() {
3857     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3858 }
3859
3860 die_license_disabled_gpl() {
3861     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3862 }
3863
3864 die_license_disabled gpl frei0r
3865 die_license_disabled gpl libcdio
3866 die_license_disabled gpl libutvideo
3867 die_license_disabled gpl libvidstab
3868 die_license_disabled gpl libx264
3869 die_license_disabled gpl libxavs
3870 die_license_disabled gpl libxvid
3871 die_license_disabled gpl libzvbi
3872 die_license_disabled gpl x11grab
3873
3874 die_license_disabled nonfree libaacplus
3875 die_license_disabled nonfree libfaac
3876 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3877 enabled gpl && die_license_disabled_gpl nonfree openssl
3878
3879 die_license_disabled version3 libopencore_amrnb
3880 die_license_disabled version3 libopencore_amrwb
3881 die_license_disabled version3 libvo_aacenc
3882 die_license_disabled version3 libvo_amrwbenc
3883
3884 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3885
3886 disabled optimizations || check_cflags -fomit-frame-pointer
3887
3888 enable_weak_pic() {
3889     disabled pic && return
3890     enable pic
3891     add_cppflags -DPIC
3892     case "$target_os" in
3893     mingw*|cygwin*)
3894         ;;
3895     *)
3896         add_cflags -fPIC
3897         ;;
3898     esac
3899     add_asflags  -fPIC
3900 }
3901
3902 enabled pic && enable_weak_pic
3903
3904 check_cc <<EOF || die "Symbol mangling check failed."
3905 int ff_extern;
3906 EOF
3907 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3908 extern_prefix=${sym%%ff_extern*}
3909
3910 check_cc <<EOF && enable_weak inline_asm
3911 void foo(void) { __asm__ volatile ("" ::); }
3912 EOF
3913
3914 _restrict=
3915 for restrict_keyword in restrict __restrict__ __restrict; do
3916     check_cc <<EOF && _restrict=$restrict_keyword && break
3917 void foo(char * $restrict_keyword p);
3918 EOF
3919 done
3920
3921 check_cc <<EOF && enable pragma_deprecated
3922 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3923 EOF
3924
3925 check_cc <<EOF && enable attribute_packed
3926 struct { int x; } __attribute__((packed)) x;
3927 EOF
3928
3929 check_cc <<EOF && enable attribute_may_alias
3930 union { int x; } __attribute__((may_alias)) x;
3931 EOF
3932
3933 check_cc <<EOF || die "endian test failed"
3934 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3935 EOF
3936 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3937
3938 check_inline_asm inline_asm_labels '"1:\n"'
3939
3940 if enabled alpha; then
3941
3942     check_cflags -mieee
3943
3944 elif enabled arm; then
3945
3946     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3947 float func(float a, float b){ return a+b; }
3948 EOF
3949
3950     enabled thumb && check_cflags -mthumb || check_cflags -marm
3951     nogas=die
3952
3953     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3954         enable vfp_args
3955     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3956         case "${cross_prefix:-$cc}" in
3957             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3958             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3959 __asm__ (".eabi_attribute 28, 1");
3960 int main(void) { return 0; }
3961 EOF
3962         esac
3963         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3964     fi
3965
3966     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3967     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3968     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3969     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3970     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3971     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3972
3973     [ $target_os = linux ] ||
3974         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3975             $ARCH_EXT_LIST_ARM
3976
3977     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3978     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3979
3980     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3981
3982 elif enabled mips; then
3983
3984     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3985     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3986      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3987     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3988      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3989     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3990      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3991     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3992      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3993
3994 elif enabled parisc; then
3995
3996     if enabled gcc; then
3997         case $($cc -dumpversion) in
3998             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3999         esac
4000     fi
4001
4002 elif enabled ppc; then
4003
4004     enable local_aligned_8 local_aligned_16
4005
4006     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4007     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4008     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4009     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4010
4011     # AltiVec flags: The FSF version of GCC differs from the Apple version
4012     if enabled altivec; then
4013         if ! enabled_any pic ppc64; then
4014             nogas=warn
4015         fi
4016         check_cflags -maltivec -mabi=altivec &&
4017         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4018         check_cflags -faltivec
4019
4020         # check if our compiler supports Motorola AltiVec C API
4021         check_cc <<EOF || disable altivec
4022 $inc_altivec_h
4023 int main(void) {
4024     vector signed int v1 = (vector signed int) { 0 };
4025     vector signed int v2 = (vector signed int) { 1 };
4026     v1 = vec_add(v1, v2);
4027     return 0;
4028 }
4029 EOF
4030
4031         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4032     fi
4033
4034 elif enabled sparc; then
4035
4036     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4037
4038 elif enabled x86; then
4039
4040     check_builtin rdtsc    intrin.h   "__rdtsc()"
4041     check_builtin mm_empty mmintrin.h "_mm_empty()"
4042
4043     enable local_aligned_8 local_aligned_16
4044
4045     # check whether EBP is available on x86
4046     # As 'i' is stored on the stack, this program will crash
4047     # if the base pointer is used to access it because the
4048     # base pointer is cleared in the inline assembly code.
4049     check_exec_crash <<EOF && enable ebp_available
4050 volatile int i=0;
4051 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4052 return i;
4053 EOF
4054
4055     # check whether EBX is available on x86
4056     check_inline_asm ebx_available '""::"b"(0)' &&
4057         check_inline_asm ebx_available '"":::"%ebx"'
4058
4059     # check whether xmm clobbers are supported
4060     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4061
4062     # check whether binutils is new enough to compile SSSE3/MMXEXT
4063     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4064     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4065
4066     if ! disabled_any asm mmx yasm; then
4067         if check_cmd $yasmexe --version; then
4068             enabled x86_64 && yasm_extra="-m amd64"
4069             yasm_debug="-g dwarf2"
4070         elif check_cmd nasm -v; then
4071             yasmexe=nasm
4072             yasm_debug="-g -F dwarf"
4073             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4074         fi
4075
4076         YASMFLAGS="-f $objformat $yasm_extra"
4077         enabled pic               && append YASMFLAGS "-DPIC"
4078         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4079         case "$objformat" in
4080             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4081         esac
4082
4083         check_yasm "movbe ecx, [5]" && enable yasm ||
4084             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4085         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4086         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4087         check_yasm "CPU amdnop" && enable cpunop
4088     fi
4089
4090     case "$cpu" in
4091         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4092             disable fast_clz
4093         ;;
4094     esac
4095
4096 fi
4097
4098 if enabled asm; then
4099     as=${gas:=$as}
4100     check_as <<EOF && enable gnu_as || \
4101         $nogas "GNU assembler not found, install gas-preprocessor"
4102 .macro m n
4103 \n: .int 0
4104 .endm
4105 m x
4106 EOF
4107 fi
4108
4109 check_ldflags -Wl,--as-needed
4110
4111 if check_func dlopen; then
4112     ldl=
4113 elif check_func dlopen -ldl; then
4114     ldl=-ldl
4115 fi
4116
4117 if ! disabled network; then
4118     check_type "sys/types.h sys/socket.h" socklen_t
4119     check_type netdb.h "struct addrinfo"
4120     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4121     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4122     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4123     check_type netinet/in.h "struct sockaddr_in6"
4124     check_type poll.h "struct pollfd"
4125     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4126     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4127     check_type netinet/sctp.h "struct sctp_event_subscribe"
4128     check_func getaddrinfo $network_extralibs
4129     check_func getservbyport $network_extralibs
4130     # Prefer arpa/inet.h over winsock2
4131     if check_header arpa/inet.h ; then
4132         check_func closesocket
4133     elif check_header winsock2.h ; then
4134         check_func_headers winsock2.h closesocket -lws2 &&
4135             network_extralibs="-lws2" ||
4136         { check_func_headers winsock2.h closesocket -lws2_32 &&
4137             network_extralibs="-lws2_32"; }
4138         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4139         check_type ws2tcpip.h socklen_t
4140         check_type ws2tcpip.h "struct addrinfo"
4141         check_type ws2tcpip.h "struct group_source_req"
4142         check_type ws2tcpip.h "struct ip_mreq_source"
4143         check_type ws2tcpip.h "struct ipv6_mreq"
4144         check_type winsock2.h "struct pollfd"
4145         check_type ws2tcpip.h "struct sockaddr_in6"
4146         check_type ws2tcpip.h "struct sockaddr_storage"
4147         check_struct winsock2.h "struct sockaddr" sa_len
4148     else
4149         disable network
4150     fi
4151 fi
4152
4153 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4154 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4155
4156 check_func  access
4157 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4158 check_func  fcntl
4159 check_func  fork
4160 check_func_headers stdlib.h getenv
4161 check_func  gethrtime
4162 check_func  getopt
4163 check_func  getrusage
4164 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4165 check_func  gettimeofday
4166 check_func  inet_aton $network_extralibs
4167 check_func  isatty
4168 check_func  localtime_r
4169 check_func  ${malloc_prefix}memalign            && enable memalign
4170 check_func  mkstemp
4171 check_func  mmap
4172 check_func  mprotect
4173 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4174 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4175 check_func  setrlimit
4176 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4177 check_func  strerror_r
4178 check_func  sched_getaffinity
4179 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4180 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4181 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4182 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4183 check_builtin sarestart signal.h "SA_RESTART"
4184 check_func  sysconf
4185 check_func  sysctl
4186 check_func  usleep
4187 check_func_headers conio.h kbhit
4188 check_func_headers windows.h PeekNamedPipe
4189 check_func_headers io.h setmode
4190 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4191 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4192 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4193 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4194 check_func_headers windows.h GetProcessAffinityMask
4195 check_func_headers windows.h GetProcessTimes
4196 check_func_headers windows.h GetSystemTimeAsFileTime
4197 check_func_headers windows.h MapViewOfFile
4198 check_func_headers windows.h SetConsoleTextAttribute
4199 check_func_headers windows.h Sleep
4200 check_func_headers windows.h VirtualAlloc
4201 check_func_headers glob.h glob
4202 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4203
4204 check_header cl/cl.h
4205 check_header direct.h
4206 check_header dlfcn.h
4207 check_header dxva.h
4208 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4209 check_header io.h
4210 check_header libcrystalhd/libcrystalhd_if.h
4211 check_header malloc.h
4212 check_header poll.h
4213 check_header sys/mman.h
4214 check_header sys/param.h
4215 check_header sys/resource.h
4216 check_header sys/select.h
4217 check_header sys/time.h
4218 check_header sys/un.h
4219 check_header termios.h
4220 check_header unistd.h
4221 check_header vdpau/vdpau.h
4222 check_header vdpau/vdpau_x11.h
4223 check_header VideoDecodeAcceleration/VDADecoder.h
4224 check_header windows.h
4225 check_header X11/extensions/XvMClib.h
4226 check_header asm/types.h
4227
4228 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4229 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4230
4231 if ! disabled w32threads && ! enabled pthreads; then
4232     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4233 fi
4234
4235 # check for some common methods of building with pthread support
4236 # do this before the optional library checks as some of them require pthreads
4237 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4238     enable pthreads
4239     if check_func pthread_create; then
4240         :
4241     elif check_func pthread_create -pthread; then
4242         add_cflags -pthread
4243         add_extralibs -pthread
4244     elif check_func pthread_create -pthreads; then
4245         add_cflags -pthreads
4246         add_extralibs -pthreads
4247     elif check_func pthread_create -lpthreadGC2; then
4248         add_extralibs -lpthreadGC2
4249     elif ! check_lib pthread.h pthread_create -lpthread; then
4250         disable pthreads
4251     fi
4252 fi
4253
4254 for thread in $THREADS_LIST; do
4255     if enabled $thread; then
4256         test -n "$thread_type" &&
4257             die "ERROR: Only one thread type must be selected." ||
4258             thread_type="$thread"
4259     fi
4260 done
4261
4262 if enabled pthreads; then
4263   check_func pthread_cancel
4264 fi
4265
4266 enabled sync_val_compare_and_swap && enable atomics_gcc
4267 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4268 enabled MemoryBarrier && enable atomics_win32
4269
4270 check_lib math.h sin -lm && LIBM="-lm"
4271 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4272
4273 atan2f_args=2
4274 ldexpf_args=2
4275 powf_args=2
4276
4277 for func in $MATH_FUNCS; do
4278     eval check_mathfunc $func \${${func}_args:-1}
4279 done
4280
4281 # these are off by default, so fail if requested and not available
4282 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4283                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4284                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4285 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4286 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4287 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4288 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4289 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4290 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4291 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4292 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4293 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4294                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4295                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4296 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4297 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4298 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4299 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"
4300 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4301 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4302 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4303 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4304                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4305                                done || die "ERROR: libgsm not found"; }
4306 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4307 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4308 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4309 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4310 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4311 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4312 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4313 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4314                                check_lib openjpeg.h opj_version -lopenjpeg ||
4315                                die "ERROR: libopenjpeg not found"; }
4316 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4317 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4318 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4319 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4320 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4321 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4322 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4323 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4324 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4325 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4326     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4327     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4328 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4329 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4330                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4331                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4332 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4333 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4334 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4335 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4336 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4337 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4338 enabled libvpx            && {
4339     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4340                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4341     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 ||
4342                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4343     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4344     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4345 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4346 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4347                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4348                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4349 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4350 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4351 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4352 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4353 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4354                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4355                                die "ERROR: openal not found"; } &&
4356                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4357                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4358 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4359                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4360                                die "ERROR: opencl not found"; } &&
4361                              { ! enabled_any w32threads os2threads ||
4362                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4363                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4364                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4365                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4366 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4367                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4368                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4369                                die "ERROR: openssl not found"; }
4370
4371 if enabled gnutls; then
4372     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4373     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4374 fi
4375
4376 # libdc1394 check
4377 if enabled libdc1394; then
4378     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4379         enable libdc1394_2; } ||
4380     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4381         enable libdc1394_1; } ||
4382     die "ERROR: No version of libdc1394 found "
4383 fi
4384
4385 SDL_CONFIG="${cross_prefix}sdl-config"
4386 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4387     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4388     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4389     enable sdl
4390 else
4391   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4392     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4393     sdl_libs=$("${SDL_CONFIG}" --libs)
4394     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4395     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4396     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4397     enable sdl
4398   fi
4399 fi
4400 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4401
4402 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4403 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4404 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4405 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4406 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4407
4408 check_header linux/fb.h
4409 check_header linux/videodev.h
4410 check_header linux/videodev2.h
4411 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4412
4413 check_header sys/videoio.h
4414
4415 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4416 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4417 # w32api 3.12 had it defined wrong
4418 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4419
4420 check_type "dshow.h" IBaseFilter
4421
4422 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4423 { check_header dev/bktr/ioctl_meteor.h &&
4424   check_header dev/bktr/ioctl_bt848.h; } ||
4425 { check_header machine/ioctl_meteor.h &&
4426   check_header machine/ioctl_bt848.h; } ||
4427 { check_header dev/video/meteor/ioctl_meteor.h &&
4428   check_header dev/video/bktr/ioctl_bt848.h; } ||
4429 check_header dev/ic/bt8xx.h
4430
4431 check_header sndio.h
4432 if check_struct sys/soundcard.h audio_buf_info bytes; then
4433     enable_safe sys/soundcard.h
4434 else
4435     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4436     #include <sys/soundcard.h>
4437     audio_buf_info abc;
4438 EOF
4439 fi
4440 check_header soundcard.h
4441
4442 enabled_any alsa_indev alsa_outdev &&
4443     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4444
4445 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4446     check_func jack_port_get_latency_range -ljack
4447
4448 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4449
4450 if enabled libcdio; then
4451     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4452     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4453     die "ERROR: libcdio-paranoia not found"
4454 fi
4455
4456 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4457
4458 enabled x11grab                                           &&
4459 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4460 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4461 { enabled xlib || die "ERROR: Xlib not found"; }
4462
4463 enabled vaapi &&
4464     check_lib va/va.h vaInitialize -lva ||
4465     disable vaapi
4466
4467 enabled vdpau &&
4468     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4469     disable vdpau
4470
4471 enabled vdpau && enabled xlib &&
4472     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4473     enable vdpau_x11
4474
4475 # Funny iconv installations are not unusual, so check it after all flags have been set
4476 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4477
4478 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4479
4480 # add some useful compiler flags if supported
4481 check_cflags -Wdeclaration-after-statement
4482 check_cflags -Wall
4483 check_cflags -Wdisabled-optimization
4484 check_cflags -Wpointer-arith
4485 check_cflags -Wredundant-decls
4486 check_cflags -Wwrite-strings
4487 check_cflags -Wtype-limits
4488 check_cflags -Wundef
4489 check_cflags -Wmissing-prototypes
4490 check_cflags -Wno-pointer-to-int-cast
4491 check_cflags -Wstrict-prototypes
4492 enabled extra_warnings && check_cflags -Winline
4493
4494 check_disable_warning(){
4495     warning_flag=-W${1#-Wno-}
4496     test_cflags $warning_flag && add_cflags $1
4497 }
4498
4499 check_disable_warning -Wno-parentheses
4500 check_disable_warning -Wno-switch
4501 check_disable_warning -Wno-format-zero-length
4502 check_disable_warning -Wno-pointer-sign
4503
4504 # add some linker flags
4505 check_ldflags -Wl,--warn-common
4506 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4507 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4508 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4509
4510 enabled xmm_clobber_test &&
4511     check_ldflags -Wl,--wrap,avcodec_open2              \
4512                   -Wl,--wrap,avcodec_decode_audio4      \
4513                   -Wl,--wrap,avcodec_decode_video2      \
4514                   -Wl,--wrap,avcodec_decode_subtitle2   \
4515                   -Wl,--wrap,avcodec_encode_audio2      \
4516                   -Wl,--wrap,avcodec_encode_video       \
4517                   -Wl,--wrap,avcodec_encode_video2      \
4518                   -Wl,--wrap,avcodec_encode_subtitle    \
4519                   -Wl,--wrap,sws_scale ||
4520     disable xmm_clobber_test
4521
4522 echo "X{};" > $TMPV
4523 if test_ldflags -Wl,--version-script,$TMPV; then
4524     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4525     check_cc <<EOF && enable symver_asm_label
4526 void ff_foo(void) __asm__ ("av_foo@VERSION");
4527 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4528 EOF
4529     check_cc <<EOF && enable symver_gnu_asm
4530 __asm__(".symver ff_foo,av_foo@VERSION");
4531 void ff_foo(void) {}
4532 EOF
4533 fi
4534
4535 if [ -z "$optflags" ]; then
4536     if enabled small; then
4537         optflags=$cflags_size
4538     elif enabled optimizations; then
4539         optflags=$cflags_speed
4540     else
4541         optflags=$cflags_noopt
4542     fi
4543 fi
4544
4545 check_optflags(){
4546     check_cflags "$@"
4547     enabled lto && check_ldflags "$@"
4548 }
4549
4550
4551 if enabled lto; then
4552     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4553     check_cflags  -flto
4554     check_ldflags -flto $cpuflags
4555 fi
4556
4557 check_optflags $optflags
4558 check_optflags -fno-math-errno
4559 check_optflags -fno-signed-zeros
4560
4561 enabled ftrapv && check_cflags -ftrapv
4562
4563 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4564 int x;
4565 EOF
4566
4567
4568 if enabled icc; then
4569     # Just warnings, no remarks
4570     check_cflags -w1
4571     # -wd: Disable following warnings
4572     # 144, 167, 556: -Wno-pointer-sign
4573     # 188: enumerated type mixed with another type
4574     # 1292: attribute "foo" ignored
4575     # 1419: external declaration in primary source file
4576     # 10006: ignoring unknown option -fno-signed-zeros
4577     # 10148: ignoring unknown option -Wno-parentheses
4578     # 10156: ignoring option '-W'; no argument required
4579     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4580     # 11030: Warning unknown option --as-needed
4581     # 10156: ignoring option '-export'; no argument required
4582     check_ldflags -wd10156,11030
4583     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4584     enable ebp_available
4585     if enabled x86_32; then
4586         icc_version=$($cc -dumpversion)
4587         test ${icc_version%%.*} -ge 11 &&
4588             check_cflags -falign-stack=maintain-16-byte ||
4589             disable aligned_stack
4590     fi
4591 elif enabled ccc; then
4592     # disable some annoying warnings
4593     add_cflags -msg_disable bitnotint
4594     add_cflags -msg_disable mixfuncvoid
4595     add_cflags -msg_disable nonstandcast
4596     add_cflags -msg_disable unsupieee
4597 elif enabled gcc; then
4598     check_optflags -fno-tree-vectorize
4599     check_cflags -Werror=implicit-function-declaration
4600     check_cflags -Werror=missing-prototypes
4601     check_cflags -Werror=return-type
4602     check_cflags -Werror=vla
4603     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4604 elif enabled llvm_gcc; then
4605     check_cflags -mllvm -stack-alignment=16
4606 elif enabled clang; then
4607     check_cflags -mllvm -stack-alignment=16
4608     check_cflags -Qunused-arguments
4609     check_cflags -Werror=implicit-function-declaration
4610     check_cflags -Werror=missing-prototypes
4611     check_cflags -Werror=return-type
4612 elif enabled cparser; then
4613     add_cflags -Wno-missing-variable-declarations
4614     add_cflags -Wno-empty-statement
4615 elif enabled armcc; then
4616     # 2523: use of inline assembler is deprecated
4617     add_cflags -W${armcc_opt},--diag_suppress=2523
4618     add_cflags -W${armcc_opt},--diag_suppress=1207
4619     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4620     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4621     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4622     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4623 elif enabled tms470; then
4624     add_cflags -pds=824 -pds=837
4625 elif enabled pathscale; then
4626     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4627 elif enabled_any msvc icl; then
4628     enabled x86_32 && disable aligned_stack
4629     enabled_all x86_32 debug && add_cflags -Oy-
4630     enabled debug && add_ldflags -debug
4631     enable pragma_deprecated
4632     if enabled icl; then
4633         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4634         # (correctly) on icl 13.x.
4635         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4636             add_cflags -Qansi-alias
4637         # icl will pass the inline asm tests but inline asm is currently
4638         # not supported (build will fail)
4639         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4640         disable inline_asm
4641     fi
4642 fi
4643
4644 case $target_os in
4645     osf1)
4646         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4647     ;;
4648     plan9)
4649         add_cppflags -Dmain=plan9_main
4650     ;;
4651 esac
4652
4653 enable frame_thread_encoder
4654 enabled_any $THREADS_LIST      && enable threads
4655 enabled_any $ATOMICS_LIST      && enable atomics_native
4656
4657 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"
4658
4659 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4660
4661 check_deps $CONFIG_LIST       \
4662            $CONFIG_EXTRA      \
4663            $HAVE_LIST         \
4664            $ALL_COMPONENTS    \
4665
4666
4667 if test $target_os = "haiku"; then
4668     disable memalign
4669     disable posix_memalign
4670 fi
4671
4672 ! enabled_any memalign posix_memalign aligned_malloc &&
4673     enabled_any $need_memalign && enable memalign_hack
4674
4675 # add_dep lib dep
4676 # -> enable ${lib}_deps_${dep}
4677 # -> add $dep to ${lib}_deps only once
4678 add_dep() {
4679     lib=$1
4680     dep=$2
4681     enabled "${lib}_deps_${dep}" && return 0
4682     enable  "${lib}_deps_${dep}"
4683     prepend "${lib}_deps" $dep
4684 }
4685
4686 # merge deps lib components
4687 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4688 merge_deps() {
4689     lib=$1
4690     shift
4691     for comp in $*; do
4692         enabled $comp || continue
4693         eval "dep=\"\$${comp}_deps\""
4694         for d in $dep; do
4695             add_dep $lib $d
4696         done
4697     done
4698 }
4699
4700 merge_deps libavfilter $FILTER_LIST
4701
4702 echo "install prefix            $prefix"
4703 echo "source path               $source_path"
4704 echo "C compiler                $cc"
4705 echo "ARCH                      $arch ($cpu)"
4706 if test "$build_suffix" != ""; then
4707     echo "build suffix              $build_suffix"
4708 fi
4709 if test "$progs_suffix" != ""; then
4710     echo "progs suffix              $progs_suffix"
4711 fi
4712 if test "$extra_version" != ""; then
4713     echo "version string suffix     $extra_version"
4714 fi
4715 echo "big-endian                ${bigendian-no}"
4716 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4717 if enabled x86; then
4718     echo "${yasmexe}                      ${yasm-no}"
4719     echo "MMX enabled               ${mmx-no}"
4720     echo "MMXEXT enabled            ${mmxext-no}"
4721     echo "3DNow! enabled            ${amd3dnow-no}"
4722     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4723     echo "SSE enabled               ${sse-no}"
4724     echo "SSSE3 enabled             ${ssse3-no}"
4725     echo "AVX enabled               ${avx-no}"
4726     echo "FMA4 enabled              ${fma4-no}"
4727     echo "i686 features enabled     ${i686-no}"
4728     echo "CMOV is fast              ${fast_cmov-no}"
4729     echo "EBX available             ${ebx_available-no}"
4730     echo "EBP available             ${ebp_available-no}"
4731 fi
4732 if enabled arm; then
4733     echo "ARMv5TE enabled           ${armv5te-no}"
4734     echo "ARMv6 enabled             ${armv6-no}"
4735     echo "ARMv6T2 enabled           ${armv6t2-no}"
4736     echo "VFP enabled               ${vfp-no}"
4737     echo "NEON enabled              ${neon-no}"
4738     echo "THUMB enabled             ${thumb-no}"
4739 fi
4740 if enabled mips; then
4741     echo "MIPS FPU enabled          ${mipsfpu-no}"
4742     echo "MIPS32R2 enabled          ${mips32r2-no}"
4743     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4744     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4745 fi
4746 if enabled ppc; then
4747     echo "AltiVec enabled           ${altivec-no}"
4748     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4749     echo "dcbzl available           ${dcbzl-no}"
4750 fi
4751 if enabled sparc; then
4752     echo "VIS enabled               ${vis-no}"
4753 fi
4754 echo "debug symbols             ${debug-no}"
4755 echo "strip symbols             ${stripping-no}"
4756 echo "optimize for size         ${small-no}"
4757 echo "optimizations             ${optimizations-no}"
4758 echo "static                    ${static-no}"
4759 echo "shared                    ${shared-no}"
4760 echo "postprocessing support    ${postproc-no}"
4761 echo "new filter support        ${avfilter-no}"
4762 echo "network support           ${network-no}"
4763 echo "threading support         ${thread_type-no}"
4764 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4765 echo "SDL support               ${sdl-no}"
4766 echo "opencl enabled            ${opencl-no}"
4767 echo "libzvbi enabled           ${libzvbi-no}"
4768 echo "texi2html enabled         ${texi2html-no}"
4769 echo "perl enabled              ${perl-no}"
4770 echo "pod2man enabled           ${pod2man-no}"
4771 echo "makeinfo enabled          ${makeinfo-no}"
4772 test -n "$random_seed" &&
4773     echo "random seed               ${random_seed}"
4774 echo
4775
4776 echo "External libraries:"
4777 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4778 echo
4779
4780 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4781     echo "Enabled ${type}s:"
4782     eval list=\$$(toupper $type)_LIST
4783     print_enabled '_*' $list | print_3_columns
4784     echo
4785 done
4786
4787 license="LGPL version 2.1 or later"
4788 if enabled nonfree; then
4789     license="nonfree and unredistributable"
4790 elif enabled gplv3; then
4791     license="GPL version 3 or later"
4792 elif enabled lgplv3; then
4793     license="LGPL version 3 or later"
4794 elif enabled gpl; then
4795     license="GPL version 2 or later"
4796 fi
4797
4798 echo "License: $license"
4799
4800 echo "Creating config.mak, config.h, and doc/config.texi..."
4801
4802 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4803
4804 enabled stripping || strip="echo skipping strip"
4805
4806 config_files="$TMPH config.mak doc/config.texi"
4807
4808 cat > config.mak <<EOF
4809 # Automatically generated by configure - do not modify!
4810 ifndef FFMPEG_CONFIG_MAK
4811 FFMPEG_CONFIG_MAK=1
4812 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4813 prefix=$prefix
4814 LIBDIR=\$(DESTDIR)$libdir
4815 SHLIBDIR=\$(DESTDIR)$shlibdir
4816 INCDIR=\$(DESTDIR)$incdir
4817 BINDIR=\$(DESTDIR)$bindir
4818 DATADIR=\$(DESTDIR)$datadir
4819 DOCDIR=\$(DESTDIR)$docdir
4820 MANDIR=\$(DESTDIR)$mandir
4821 SRC_PATH=$source_path
4822 ifndef MAIN_MAKEFILE
4823 SRC_PATH:=\$(SRC_PATH:.%=..%)
4824 endif
4825 CC_IDENT=$cc_ident
4826 ARCH=$arch
4827 CC=$cc
4828 CXX=$cxx
4829 AS=$as
4830 LD=$ld
4831 DEPCC=$dep_cc
4832 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4833 DEPAS=$as
4834 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4835 YASM=$yasmexe
4836 DEPYASM=$yasmexe
4837 AR=$ar
4838 ARFLAGS=$arflags
4839 AR_O=$ar_o
4840 RANLIB=$ranlib
4841 STRIP=$strip
4842 CP=cp -p
4843 LN_S=$ln_s
4844 CPPFLAGS=$CPPFLAGS
4845 CFLAGS=$CFLAGS
4846 CXXFLAGS=$CXXFLAGS
4847 ASFLAGS=$ASFLAGS
4848 AS_C=$AS_C
4849 AS_O=$AS_O
4850 CC_C=$CC_C
4851 CC_E=$CC_E
4852 CC_O=$CC_O
4853 CXX_C=$CXX_C
4854 CXX_O=$CXX_O
4855 LD_O=$LD_O
4856 LD_LIB=$LD_LIB
4857 LD_PATH=$LD_PATH
4858 DLLTOOL=$dlltool
4859 LDFLAGS=$LDFLAGS
4860 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4861 YASMFLAGS=$YASMFLAGS
4862 BUILDSUF=$build_suffix
4863 PROGSSUF=$progs_suffix
4864 FULLNAME=$FULLNAME
4865 LIBPREF=$LIBPREF
4866 LIBSUF=$LIBSUF
4867 LIBNAME=$LIBNAME
4868 SLIBPREF=$SLIBPREF
4869 SLIBSUF=$SLIBSUF
4870 EXESUF=$EXESUF
4871 EXTRA_VERSION=$extra_version
4872 CCDEP=$CCDEP
4873 CXXDEP=$CXXDEP
4874 CCDEP_FLAGS=$CCDEP_FLAGS
4875 ASDEP=$ASDEP
4876 ASDEP_FLAGS=$ASDEP_FLAGS
4877 CC_DEPFLAGS=$CC_DEPFLAGS
4878 AS_DEPFLAGS=$AS_DEPFLAGS
4879 HOSTCC=$host_cc
4880 HOSTLD=$host_ld
4881 HOSTCFLAGS=$host_cflags
4882 HOSTCPPFLAGS=$host_cppflags
4883 HOSTEXESUF=$HOSTEXESUF
4884 HOSTLDFLAGS=$host_ldflags
4885 HOSTLIBS=$host_libs
4886 DEPHOSTCC=$host_cc
4887 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4888 HOSTCCDEP=$HOSTCCDEP
4889 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4890 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4891 HOSTCC_C=$HOSTCC_C
4892 HOSTCC_O=$HOSTCC_O
4893 HOSTLD_O=$HOSTLD_O
4894 TARGET_EXEC=$target_exec $target_exec_args
4895 TARGET_PATH=$target_path
4896 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4897 LIBS-ffplay=$sdl_libs
4898 CFLAGS-ffplay=$sdl_cflags
4899 ZLIB=$($ldflags_filter -lz)
4900 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4901 EXTRALIBS=$extralibs
4902 COMPAT_OBJS=$compat_objs
4903 EXEOBJS=$exeobjs
4904 INSTALL=$install
4905 LIBTARGET=${LIBTARGET}
4906 SLIBNAME=${SLIBNAME}
4907 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4908 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4909 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4910 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4911 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4912 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4913 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4914 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4915 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4916 NOREDZONE_FLAGS=$noredzone_flags
4917 EOF
4918
4919 get_version(){
4920     lcname=lib${1}
4921     name=$(toupper $lcname)
4922     file=$source_path/$lcname/version.h
4923     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4924     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4925     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4926     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4927     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4928 }
4929
4930 map 'get_version $v' $LIBRARY_LIST
4931
4932 cat > $TMPH <<EOF
4933 /* Automatically generated by configure - do not modify! */
4934 #ifndef FFMPEG_CONFIG_H
4935 #define FFMPEG_CONFIG_H
4936 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4937 #define FFMPEG_LICENSE "$(c_escape $license)"
4938 #define CONFIG_THIS_YEAR 2013
4939 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4940 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4941 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4942 #define av_restrict $_restrict
4943 #define EXTERN_PREFIX "${extern_prefix}"
4944 #define EXTERN_ASM ${extern_prefix}
4945 #define SLIBSUF "$SLIBSUF"
4946 #define HAVE_MMX2 HAVE_MMXEXT
4947 EOF
4948
4949 test -n "$assert_level" &&
4950     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4951
4952 test -n "$malloc_prefix" &&
4953     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4954
4955 if enabled yasm; then
4956     append config_files $TMPASM
4957     printf '' >$TMPASM
4958 fi
4959
4960 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4961
4962
4963 mkdir -p doc
4964 echo "@c auto-generated by configure" > doc/config.texi
4965
4966 print_config ARCH_   "$config_files" $ARCH_LIST
4967 print_config HAVE_   "$config_files" $HAVE_LIST
4968 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4969                                      $CONFIG_EXTRA      \
4970                                      $ALL_COMPONENTS    \
4971
4972 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4973 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4974
4975 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4976 cp_if_changed $TMPH config.h
4977 touch .config
4978
4979 enabled yasm && cp_if_changed $TMPASM config.asm
4980
4981 cat > $TMPH <<EOF
4982 /* Generated by ffconf */
4983 #ifndef AVUTIL_AVCONFIG_H
4984 #define AVUTIL_AVCONFIG_H
4985 EOF
4986
4987 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4988
4989 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4990
4991 cp_if_changed $TMPH libavutil/avconfig.h
4992
4993 if test -n "$WARNINGS"; then
4994     printf "\n$WARNINGS"
4995     enabled fatal_warnings && exit 1
4996 fi
4997
4998 # build pkg-config files
4999
5000 pkgconfig_generate(){
5001     name=$1
5002     shortname=${name#lib}${build_suffix}
5003     comment=$2
5004     version=$3
5005     libs=$4
5006     requires=$5
5007     enabled ${name#lib} || return 0
5008     mkdir -p $name
5009     cat <<EOF > $name/$name${build_suffix}.pc
5010 prefix=$prefix
5011 exec_prefix=\${prefix}
5012 libdir=$libdir
5013 includedir=$incdir
5014
5015 Name: $name
5016 Description: $comment
5017 Version: $version
5018 Requires: $(enabled shared || echo $requires)
5019 Requires.private: $(enabled shared && echo $requires)
5020 Conflicts:
5021 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5022 Libs.private: $(enabled shared && echo $libs)
5023 Cflags: -I\${includedir}
5024 EOF
5025
5026 mkdir -p doc/examples/pc-uninstalled
5027 includedir=${source_path}
5028 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5029     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5030 prefix=
5031 exec_prefix=
5032 libdir=\${pcfiledir}/../../../$name
5033 includedir=${includedir}
5034
5035 Name: $name
5036 Description: $comment
5037 Version: $version
5038 Requires: $requires
5039 Conflicts:
5040 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5041 Cflags: -I\${includedir}
5042 EOF
5043 }
5044
5045 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5046 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5047 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5048 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5049 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5050 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5051 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5052 lavfi_libs=${lavfi_libs%, }
5053
5054 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5055 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5056
5057 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5058 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5059 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5060 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5061 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5062 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5063 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5064 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5065 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5066
5067 fix_ffmpeg_remote(){
5068     git_remote_from=$1
5069     git_remote_to=$2
5070     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5071     if [ "$fixme_remote" != "" ]; then
5072         echolog "
5073 Outdated domain in git config, the official domain for ffmpeg git is since
5074 November 2011, source.ffmpeg.org, both the old and the new point to the same
5075 repository and server. To update it enter the following commands:
5076 "
5077         for remote in $fixme_remote; do
5078             echolog "git remote set-url $remote $git_remote_to"
5079         done
5080     fi
5081 }
5082
5083 if test -f "$source_path/.git/config"; then
5084     remote_from=git.videolan.org
5085     remote_to=source.ffmpeg.org
5086     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5087     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5088 fi