configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 108   --enable-raise-major     increase major version numbers in sonames [no]
 109
 110 Program options:
 111   --disable-programs       do not build command line programs
 112   --disable-ffmpeg         disable ffmpeg build
 113   --disable-ffplay         disable ffplay build
 114   --disable-ffprobe        disable ffprobe build
 115   --disable-ffserver       disable ffserver build
 116
 117 Documentation options:
 118   --disable-doc            do not build documentation
 119   --disable-htmlpages      do not build HTML documentation pages
 120   --disable-manpages       do not build man documentation pages
 121   --disable-podpages       do not build POD documentation pages
 122   --disable-txtpages       do not build text documentation pages
 123
 124 Component options:
 125   --disable-avdevice       disable libavdevice build
 126   --disable-avcodec        disable libavcodec build
 127   --disable-avformat       disable libavformat build
 128   --disable-avutil         disable libavutil build
 129   --disable-swresample     disable libswresample build
 130   --disable-swscale        disable libswscale build
 131   --disable-postproc       disable libpostproc build
 132   --disable-avfilter       disable libavfilter build
 133   --enable-avresample      enable libavresample build [no]
 134   --disable-pthreads       disable pthreads [auto]
 135   --disable-w32threads     disable Win32 threads [auto]
 136   --disable-os2threads     disable OS/2 threads [auto]
 137   --disable-network        disable network support [no]
 138   --disable-dct            disable DCT code
 139   --disable-dwt            disable DWT code
 140   --disable-error-resilience disable error resilience code
 141   --disable-lsp            disable LSP code
 142   --disable-lzo            disable LZO decoder code
 143   --disable-mdct           disable MDCT code
 144   --disable-rdft           disable RDFT code
 145   --disable-fft            disable FFT code
 146
 147 Hardware accelerators:
 148   --disable-dxva2          disable DXVA2 code [autodetect]
 149   --disable-vaapi          disable VAAPI code [autodetect]
 150   --enable-vda             enable VDA code
 151   --disable-vdpau          disable VDPAU code [autodetect]
 152
 153 Individual component options:
 154   --disable-everything     disable all components listed below
 155   --disable-encoder=NAME   disable encoder NAME
 156   --enable-encoder=NAME    enable encoder NAME
 157   --disable-encoders       disable all encoders
 158   --disable-decoder=NAME   disable decoder NAME
 159   --enable-decoder=NAME    enable decoder NAME
 160   --disable-decoders       disable all decoders
 161   --disable-hwaccel=NAME   disable hwaccel NAME
 162   --enable-hwaccel=NAME    enable hwaccel NAME
 163   --disable-hwaccels       disable all hwaccels
 164   --disable-muxer=NAME     disable muxer NAME
 165   --enable-muxer=NAME      enable muxer NAME
 166   --disable-muxers         disable all muxers
 167   --disable-demuxer=NAME   disable demuxer NAME
 168   --enable-demuxer=NAME    enable demuxer NAME
 169   --disable-demuxers       disable all demuxers
 170   --enable-parser=NAME     enable parser NAME
 171   --disable-parser=NAME    disable parser NAME
 172   --disable-parsers        disable all parsers
 173   --enable-bsf=NAME        enable bitstream filter NAME
 174   --disable-bsf=NAME       disable bitstream filter NAME
 175   --disable-bsfs           disable all bitstream filters
 176   --enable-protocol=NAME   enable protocol NAME
 177   --disable-protocol=NAME  disable protocol NAME
 178   --disable-protocols      disable all protocols
 179   --enable-indev=NAME      enable input device NAME
 180   --disable-indev=NAME     disable input device NAME
 181   --disable-indevs         disable input devices
 182   --enable-outdev=NAME     enable output device NAME
 183   --disable-outdev=NAME    disable output device NAME
 184   --disable-outdevs        disable output devices
 185   --disable-devices        disable all devices
 186   --enable-filter=NAME     enable filter NAME
 187   --disable-filter=NAME    disable filter NAME
 188   --disable-filters        disable all filters
 189
 190 External library support:
 191   --enable-avisynth        enable reading of AviSynth script files [no]
 192   --disable-bzlib          disable bzlib [autodetect]
 193   --enable-fontconfig      enable fontconfig
 194   --enable-frei0r          enable frei0r video filtering
 195   --enable-gnutls          enable gnutls [no]
 196   --disable-iconv          disable iconv [autodetect]
 197   --enable-ladspa          enable LADSPA audio filtering
 198   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 199   --enable-libass          enable libass subtitles rendering [no]
 200   --enable-libbluray       enable BluRay reading using libbluray [no]
 201   --enable-libcaca         enable textual display using libcaca
 202   --enable-libcelt         enable CELT decoding via libcelt [no]
 203   --enable-libcdio         enable audio CD grabbing with libcdio
 204   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 205                            and libraw1394 [no]
 206   --enable-libfaac         enable AAC encoding via libfaac [no]
 207   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 208   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 209   --enable-libfreetype     enable libfreetype [no]
 210   --enable-libgme          enable Game Music Emu via libgme [no]
 211   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 212   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 213   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 214   --enable-libmodplug      enable ModPlug via libmodplug [no]
 215   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 216   --enable-libnut          enable NUT (de)muxing via libnut,
 217                            native (de)muxer exists [no]
 218   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 219   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 220   --enable-libopencv       enable video filtering via libopencv [no]
 221   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 222   --enable-libopus         enable Opus decoding via libopus [no]
 223   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 224   --enable-libquvi         enable quvi input via libquvi [no]
 225   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 226   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 227   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 228   --enable-libsoxr         enable Include libsoxr resampling [no]
 229   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 230   --enable-libssh          enable SFTP protocol via libssh [no]
 231   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 232   --enable-libtheora       enable Theora encoding via libtheora [no]
 233   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 234   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 235   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 236   --enable-libvidstab      enable video stabilization using vid.stab [no]
 237   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 238   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 239   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 240                            native implementation exists [no]
 241   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 242   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 243   --enable-libx264         enable H.264 encoding via x264 [no]
 244   --enable-libxavs         enable AVS encoding via xavs [no]
 245   --enable-libxvid         enable Xvid encoding via xvidcore,
 246                            native MPEG-4/Xvid encoder exists [no]
 247   --enable-libzmq          enable message passing via libzmq [no]
 248   --enable-libzvbi         enable teletext support via libzvbi [no]
 249   --enable-openal          enable OpenAL 1.1 capture support [no]
 250   --enable-opencl          enable OpenCL code
 251   --enable-openssl         enable openssl [no]
 252   --enable-x11grab         enable X11 grabbing [no]
 253   --disable-zlib           disable zlib [autodetect]
 254
 255 Advanced options (experts only):
 256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 257   --enable-cross-compile   assume a cross-compiler is used
 258   --sysroot=PATH           root of cross-build tree
 259   --sysinclude=PATH        location of cross-build system headers
 260   --target-os=OS           compiler targets OS [$target_os]
 261   --target-exec=CMD        command to run executables on target
 262   --target-path=DIR        path to view of build directory on target
 263   --target-samples=DIR     path to samples directory on target
 264   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool NM [$nm_default]
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 270   --cc=CC                  use C compiler CC [$cc_default]
 271   --cxx=CXX                use C compiler CXX [$cxx_default]
 272   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 273   --ld=LD                  use linker LD [$ld_default]
 274   --host-cc=HOSTCC         use host C compiler HOSTCC
 275   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 276   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 277   --host-ld=HOSTLD         use host linker HOSTLD
 278   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 279   --host-libs=HLIBS        use libs HLIBS when linking for host
 280   --host-os=OS             compiler host OS [$target_os]
 281   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 282   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 283   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 285   --extra-version=STRING   version string suffix []
 286   --optflags=OPTFLAGS      override optimization-related compiler flags
 287   --build-suffix=SUFFIX    library name suffix []
 288   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 289   --progs-suffix=SUFFIX    program name suffix []
 290   --arch=ARCH              select architecture [$arch]
 291   --cpu=CPU                select the minimum required CPU (affects
 292                            instruction selection, may crash on older CPUs)
 293   --enable-pic             build position-independent code
 294   --enable-sram            allow use of on-chip SRAM
 295   --enable-thumb           compile for Thumb instruction set
 296   --disable-symver         disable symbol versioning
 297   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 298   --disable-safe-bitstream-reader
 299                            disable buffer boundary checking in bitreaders
 300                            (faster, but may crash)
 301   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 302   --enable-lto             use link-time optimization
 303
 304 Optimization options (experts only):
 305   --disable-asm            disable all assembler optimizations
 306   --disable-altivec        disable AltiVec optimizations
 307   --disable-amd3dnow       disable 3DNow! optimizations
 308   --disable-amd3dnowext    disable 3DNow! extended optimizations
 309   --disable-mmx            disable MMX optimizations
 310   --disable-mmxext         disable MMXEXT optimizations
 311   --disable-sse            disable SSE optimizations
 312   --disable-sse2           disable SSE2 optimizations
 313   --disable-sse3           disable SSE3 optimizations
 314   --disable-ssse3          disable SSSE3 optimizations
 315   --disable-sse4           disable SSE4 optimizations
 316   --disable-sse42          disable SSE4.2 optimizations
 317   --disable-avx            disable AVX optimizations
 318   --disable-fma4           disable FMA4 optimizations
 319   --disable-avx2           disable AVX2 optimizations
 320   --disable-armv5te        disable armv5te optimizations
 321   --disable-armv6          disable armv6 optimizations
 322   --disable-armv6t2        disable armv6t2 optimizations
 323   --disable-vfp            disable VFP optimizations
 324   --disable-neon           disable NEON optimizations
 325   --disable-vis            disable VIS optimizations
 326   --disable-inline-asm     disable use of inline assembler
 327   --disable-yasm           disable use of yasm assembler
 328   --disable-mips32r2       disable MIPS32R2 optimizations
 329   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 330   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 331   --disable-mipsfpu        disable floating point MIPS optimizations
 332   --disable-fast-unaligned consider unaligned accesses slow
 333
 334 Developer options (useful when working on FFmpeg itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --disable-stripping      disable stripping of executables and shared libraries
 340   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 341                            2 causes a slowdown at runtime.
 342   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 343   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 344                            leaks and errors, using the specified valgrind binary.
 345                            Cannot be combined with --target-exec
 346   --enable-ftrapv          Trap arithmetic overflows
 347   --samples=PATH           location of test samples for FATE, if not set use
 348                            \$FATE_SAMPLES at make invocation time.
 349   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 350                            should be used only for debugging purposes)
 351   --enable-random          randomly enable/disable components
 352   --disable-random
 353   --enable-random=LIST     randomly enable/disable specific components or
 354   --disable-random=LIST    component groups. LIST is a comma-separated list
 355                            of NAME[:PROB] entries where NAME is a component
 356                            (group) and PROB the probability associated with
 357                            NAME (default 0.5).
 358   --random-seed=VALUE      seed value for --enable/disable-random
 359
 360 NOTE: Object files are built at the place where configure is launched.
 361 EOF
 362   exit 0
 363 }
 364
 365 quotes='""'
 366
 367 log(){
 368     echo "$@" >> $logfile
 369 }
 370
 371 log_file(){
 372     log BEGIN $1
 373     pr -n -t $1 >> $logfile
 374     log END $1
 375 }
 376
 377 echolog(){
 378     log "$@"
 379     echo "$@"
 380 }
 381
 382 warn(){
 383     log "WARNING: $*"
 384     WARNINGS="${WARNINGS}WARNING: $*\n"
 385 }
 386
 387 die(){
 388     echolog "$@"
 389     cat <<EOF
 390
 391 If you think configure made a mistake, make sure you are using the latest
 392 version from Git.  If the latest version fails, report the problem to the
 393 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 394 EOF
 395     if disabled logging; then
 396         cat <<EOF
 397 Rerun configure with logging enabled (do not use --disable-logging), and
 398 include the log this produces with your report.
 399 EOF
 400     else
 401         cat <<EOF
 402 Include the log file "$logfile" produced by configure as this will help
 403 solving the problem.
 404 EOF
 405     fi
 406     exit 1
 407 }
 408
 409 # Avoid locale weirdness, besides we really just want to translate ASCII.
 410 toupper(){
 411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 412 }
 413
 414 tolower(){
 415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 416 }
 417
 418 c_escape(){
 419     echo "$*" | sed 's/["\\]/\\\0/g'
 420 }
 421
 422 sh_quote(){
 423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 425     echo "$v"
 426 }
 427
 428 cleanws(){
 429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 430 }
 431
 432 filter(){
 433     pat=$1
 434     shift
 435     for v; do
 436         eval "case $v in $pat) echo $v ;; esac"
 437     done
 438 }
 439
 440 filter_out(){
 441     pat=$1
 442     shift
 443     for v; do
 444         eval "case $v in $pat) ;; *) echo $v ;; esac"
 445     done
 446 }
 447
 448 map(){
 449     m=$1
 450     shift
 451     for v; do eval $m; done
 452 }
 453
 454 add_suffix(){
 455     suffix=$1
 456     shift
 457     for v; do echo ${v}${suffix}; done
 458 }
 459
 460 set_all(){
 461     value=$1
 462     shift
 463     for var in $*; do
 464         eval $var=$value
 465     done
 466 }
 467
 468 set_weak(){
 469     value=$1
 470     shift
 471     for var; do
 472         eval : \${$var:=$value}
 473     done
 474 }
 475
 476 sanitize_var_name(){
 477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 478 }
 479
 480 set_safe(){
 481     var=$1
 482     shift
 483     eval $(sanitize_var_name "$var")='$*'
 484 }
 485
 486 get_safe(){
 487     eval echo \$$(sanitize_var_name "$1")
 488 }
 489
 490 pushvar(){
 491     for pvar in $*; do
 492         eval level=\${${pvar}_level:=0}
 493         eval ${pvar}_${level}="\$$pvar"
 494         eval ${pvar}_level=$(($level+1))
 495     done
 496 }
 497
 498 popvar(){
 499     for pvar in $*; do
 500         eval level=\${${pvar}_level:-0}
 501         test $level = 0 && continue
 502         eval level=$(($level-1))
 503         eval $pvar="\${${pvar}_${level}}"
 504         eval ${pvar}_level=$level
 505         eval unset ${pvar}_${level}
 506     done
 507 }
 508
 509 enable(){
 510     set_all yes $*
 511 }
 512
 513 disable(){
 514     set_all no $*
 515 }
 516
 517 enable_weak(){
 518     set_weak yes $*
 519 }
 520
 521 disable_weak(){
 522     set_weak no $*
 523 }
 524
 525 enable_safe(){
 526     for var; do
 527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 528     done
 529 }
 530
 531 disable_safe(){
 532     for var; do
 533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 534     done
 535 }
 536
 537 do_enable_deep(){
 538     for var; do
 539         enabled $var && continue
 540         eval sel="\$${var}_select"
 541         eval sgs="\$${var}_suggest"
 542         pushvar var sgs
 543         enable_deep $sel
 544         popvar sgs
 545         enable_deep_weak $sgs
 546         popvar var
 547     done
 548 }
 549
 550 enable_deep(){
 551     do_enable_deep $*
 552     enable $*
 553 }
 554
 555 enable_deep_weak(){
 556     for var; do
 557         disabled $var && continue
 558         pushvar var
 559         do_enable_deep $var
 560         popvar var
 561         enable_weak $var
 562     done
 563 }
 564
 565 enabled(){
 566     test "${1#!}" = "$1" && op== || op=!=
 567     eval test "x\$${1#!}" $op "xyes"
 568 }
 569
 570 disabled(){
 571     test "${1#!}" = "$1" && op== || op=!=
 572     eval test "x\$${1#!}" $op "xno"
 573 }
 574
 575 enabled_all(){
 576     for opt; do
 577         enabled $opt || return 1
 578     done
 579 }
 580
 581 disabled_all(){
 582     for opt; do
 583         disabled $opt || return 1
 584     done
 585 }
 586
 587 enabled_any(){
 588     for opt; do
 589         enabled $opt && return 0
 590     done
 591 }
 592
 593 disabled_any(){
 594     for opt; do
 595         disabled $opt && return 0
 596     done
 597     return 1
 598 }
 599
 600 set_default(){
 601     for opt; do
 602         eval : \${$opt:=\$${opt}_default}
 603     done
 604 }
 605
 606 is_in(){
 607     value=$1
 608     shift
 609     for var in $*; do
 610         [ $var = $value ] && return 0
 611     done
 612     return 1
 613 }
 614
 615 do_check_deps(){
 616     for cfg; do
 617         cfg="${cfg#!}"
 618         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 619         disabled ${cfg}_checking && continue
 620         enable ${cfg}_checking
 621         append allopts $cfg
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_sel="\$${cfg}_select"
 626         eval dep_sgs="\$${cfg}_suggest"
 627         eval dep_ifa="\$${cfg}_if"
 628         eval dep_ifn="\$${cfg}_if_any"
 629
 630         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 631         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 632         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 633
 634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 636         enabled_all  $dep_all || disable $cfg
 637         enabled_any  $dep_any || disable $cfg
 638         disabled_any $dep_sel && disable $cfg
 639
 640         if enabled $cfg; then
 641             enable_deep $dep_sel
 642             enable_deep_weak $dep_sgs
 643         fi
 644
 645         disable ${cfg}_checking
 646     done
 647 }
 648
 649 check_deps(){
 650     unset allopts
 651
 652     do_check_deps "$@"
 653
 654     for cfg in $allopts; do
 655         enabled $cfg || continue
 656         eval dep_extralibs="\$${cfg}_extralibs"
 657         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 658     done
 659 }
 660
 661 print_config(){
 662     pfx=$1
 663     files=$2
 664     shift 2
 665     map 'eval echo "$v \${$v:-no}"' "$@" |
 666     awk "BEGIN { split(\"$files\", files) }
 667         {
 668             c = \"$pfx\" toupper(\$1);
 669             v = \$2;
 670             sub(/yes/, 1, v);
 671             sub(/no/,  0, v);
 672             for (f in files) {
 673                 file = files[f];
 674                 if (file ~ /\\.h\$/) {
 675                     printf(\"#define %s %d\\n\", c, v) >>file;
 676                 } else if (file ~ /\\.asm\$/) {
 677                     printf(\"%%define %s %d\\n\", c, v) >>file;
 678                 } else if (file ~ /\\.mak\$/) {
 679                     n = -v ? \"\" : \"!\";
 680                     printf(\"%s%s=yes\\n\", n, c) >>file;
 681                 } else if (file ~ /\\.texi\$/) {
 682                     pre = -v ? \"\" : \"@c \";
 683                     yesno = \$2;
 684                     c2 = tolower(c);
 685                     gsub(/_/, \"-\", c2);
 686                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 687                 }
 688             }
 689         }"
 690 }
 691
 692 print_enabled(){
 693     suf=$1
 694     shift
 695     for v; do
 696         enabled $v && printf "%s\n" ${v%$suf};
 697     done
 698 }
 699
 700 append(){
 701     var=$1
 702     shift
 703     eval "$var=\"\$$var $*\""
 704 }
 705
 706 prepend(){
 707     var=$1
 708     shift
 709     eval "$var=\"$* \$$var\""
 710 }
 711
 712 add_cppflags(){
 713     append CPPFLAGS "$@"
 714 }
 715
 716 add_cflags(){
 717     append CFLAGS $($cflags_filter "$@")
 718 }
 719
 720 add_cxxflags(){
 721     append CXXFLAGS $($cflags_filter "$@")
 722 }
 723
 724 add_asflags(){
 725     append ASFLAGS $($asflags_filter "$@")
 726 }
 727
 728 add_ldflags(){
 729     append LDFLAGS $($ldflags_filter "$@")
 730 }
 731
 732 add_extralibs(){
 733     prepend extralibs $($ldflags_filter "$@")
 734 }
 735
 736 add_host_cppflags(){
 737     append host_cppflags "$@"
 738 }
 739
 740 add_host_cflags(){
 741     append host_cflags $($host_cflags_filter "$@")
 742 }
 743
 744 add_host_ldflags(){
 745     append host_ldflags $($host_ldflags_filter "$@")
 746 }
 747
 748 add_compat(){
 749     append compat_objs $1
 750     shift
 751     map 'add_cppflags -D$v' "$@"
 752 }
 753
 754 check_cmd(){
 755     log "$@"
 756     "$@" >> $logfile 2>&1
 757 }
 758
 759 cc_o(){
 760     eval printf '%s\\n' $CC_O
 761 }
 762
 763 cc_e(){
 764     eval printf '%s\\n' $CC_E
 765 }
 766
 767 check_cc(){
 768     log check_cc "$@"
 769     cat > $TMPC
 770     log_file $TMPC
 771     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 772 }
 773
 774 check_cxx(){
 775     log check_cxx "$@"
 776     cat > $TMPCPP
 777     log_file $TMPCPP
 778     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 779 }
 780
 781 check_cpp(){
 782     log check_cpp "$@"
 783     cat > $TMPC
 784     log_file $TMPC
 785     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 786 }
 787
 788 as_o(){
 789     eval printf '%s\\n' $AS_O
 790 }
 791
 792 check_as(){
 793     log check_as "$@"
 794     cat > $TMPS
 795     log_file $TMPS
 796     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 797 }
 798
 799 check_inline_asm(){
 800     log check_inline_asm "$@"
 801     name="$1"
 802     code="$2"
 803     shift 2
 804     disable $name
 805     check_cc "$@" <<EOF && enable $name
 806 void foo(void){ __asm__ volatile($code); }
 807 EOF
 808 }
 809
 810 check_insn(){
 811     log check_insn "$@"
 812     check_inline_asm ${1}_inline "\"$2\""
 813     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 814 }
 815
 816 check_yasm(){
 817     log check_yasm "$@"
 818     echo "$1" > $TMPS
 819     log_file $TMPS
 820     shift 1
 821     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 822 }
 823
 824 ld_o(){
 825     eval printf '%s\\n' $LD_O
 826 }
 827
 828 check_ld(){
 829     log check_ld "$@"
 830     type=$1
 831     shift 1
 832     flags=$(filter_out '-l*|*.so' $@)
 833     libs=$(filter '-l*|*.so' $@)
 834     check_$type $($cflags_filter $flags) || return
 835     flags=$($ldflags_filter $flags)
 836     libs=$($ldflags_filter $libs)
 837     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 838 }
 839
 840 check_code(){
 841     log check_code "$@"
 842     check=$1
 843     headers=$2
 844     code=$3
 845     shift 3
 846     {
 847         for hdr in $headers; do
 848             echo "#include <$hdr>"
 849         done
 850         echo "int main(void) { $code; return 0; }"
 851     } | check_$check "$@"
 852 }
 853
 854 check_cppflags(){
 855     log check_cppflags "$@"
 856     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 857 int x;
 858 EOF
 859 }
 860
 861 check_cflags(){
 862     log check_cflags "$@"
 863     set -- $($cflags_filter "$@")
 864     check_cc "$@" <<EOF && append CFLAGS "$@"
 865 int x;
 866 EOF
 867 }
 868
 869 check_cxxflags(){
 870     log check_cxxflags "$@"
 871     set -- $($cflags_filter "$@")
 872     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 873 int x;
 874 EOF
 875 }
 876
 877 test_ldflags(){
 878     log test_ldflags "$@"
 879     check_ld "cc" "$@" <<EOF
 880 int main(void){ return 0; }
 881 EOF
 882 }
 883
 884 check_ldflags(){
 885     log check_ldflags "$@"
 886     test_ldflags "$@" && add_ldflags "$@"
 887 }
 888
 889 check_header(){
 890     log check_header "$@"
 891     header=$1
 892     shift
 893     disable_safe $header
 894     check_cpp "$@" <<EOF && enable_safe $header
 895 #include <$header>
 896 int x;
 897 EOF
 898 }
 899
 900 check_func(){
 901     log check_func "$@"
 902     func=$1
 903     shift
 904     disable $func
 905     check_ld "cc" "$@" <<EOF && enable $func
 906 extern int $func();
 907 int main(void){ $func(); }
 908 EOF
 909 }
 910
 911 check_mathfunc(){
 912     log check_mathfunc "$@"
 913     func=$1
 914     narg=$2
 915     shift 2
 916     test $narg = 2 && args="f, g" || args="f"
 917     disable $func
 918     check_ld "cc" "$@" <<EOF && enable $func
 919 #include <math.h>
 920 float foo(float f, float g) { return $func($args); }
 921 int main(void){ return (int) foo; }
 922 EOF
 923 }
 924
 925 check_func_headers(){
 926     log check_func_headers "$@"
 927     headers=$1
 928     funcs=$2
 929     shift 2
 930     {
 931         for hdr in $headers; do
 932             echo "#include <$hdr>"
 933         done
 934         for func in $funcs; do
 935             echo "long check_$func(void) { return (long) $func; }"
 936         done
 937         echo "int main(void) { return 0; }"
 938     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 939 }
 940
 941 check_class_headers_cpp(){
 942     log check_class_headers_cpp "$@"
 943     headers=$1
 944     classes=$2
 945     shift 2
 946     {
 947         for hdr in $headers; do
 948             echo "#include <$hdr>"
 949         done
 950         echo "int main(void) { "
 951         i=1
 952         for class in $classes; do
 953             echo "$class obj$i;"
 954             i=$(expr $i + 1)
 955         done
 956         echo "return 0; }"
 957     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 958 }
 959
 960 check_cpp_condition(){
 961     log check_cpp_condition "$@"
 962     header=$1
 963     condition=$2
 964     shift 2
 965     check_cpp "$@" <<EOF
 966 #include <$header>
 967 #if !($condition)
 968 #error "unsatisfied condition: $condition"
 969 #endif
 970 EOF
 971 }
 972
 973 check_lib(){
 974     log check_lib "$@"
 975     header="$1"
 976     func="$2"
 977     shift 2
 978     check_header $header && check_func $func "$@" && add_extralibs "$@"
 979 }
 980
 981 check_lib2(){
 982     log check_lib2 "$@"
 983     headers="$1"
 984     funcs="$2"
 985     shift 2
 986     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 987 }
 988
 989 check_lib_cpp(){
 990     log check_lib_cpp "$@"
 991     headers="$1"
 992     classes="$2"
 993     shift 2
 994     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 995 }
 996
 997 check_pkg_config(){
 998     log check_pkg_config "$@"
 999     pkg="$1"
1000     headers="$2"
1001     funcs="$3"
1002     shift 3
1003     check_cmd $pkg_config --exists --print-errors $pkg || return
1004     pkg_cflags=$($pkg_config --cflags $pkg)
1005     pkg_libs=$($pkg_config --libs $pkg)
1006     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1007         set_safe ${pkg}_cflags $pkg_cflags   &&
1008         set_safe ${pkg}_libs   $pkg_libs
1009 }
1010
1011 check_exec(){
1012     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1013 }
1014
1015 check_exec_crash(){
1016     code=$(cat)
1017
1018     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1019     # are safe but may not be available everywhere.  Thus we use
1020     # raise(SIGTERM) instead.  The check is run in a subshell so we
1021     # can redirect the "Terminated" message from the shell.  SIGBUS
1022     # is not defined by standard C so it is used conditionally.
1023
1024     (check_exec "$@") >> $logfile 2>&1 <<EOF
1025 #include <signal.h>
1026 static void sighandler(int sig){
1027     raise(SIGTERM);
1028 }
1029 int foo(void){
1030     $code
1031 }
1032 int (*func_ptr)(void) = foo;
1033 int main(void){
1034     signal(SIGILL, sighandler);
1035     signal(SIGFPE, sighandler);
1036     signal(SIGSEGV, sighandler);
1037 #ifdef SIGBUS
1038     signal(SIGBUS, sighandler);
1039 #endif
1040     return func_ptr();
1041 }
1042 EOF
1043 }
1044
1045 check_type(){
1046     log check_type "$@"
1047     headers=$1
1048     type=$2
1049     shift 2
1050     disable_safe "$type"
1051     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1052 }
1053
1054 check_struct(){
1055     log check_struct "$@"
1056     headers=$1
1057     struct=$2
1058     member=$3
1059     shift 3
1060     disable_safe "${struct}_${member}"
1061     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1062         enable_safe "${struct}_${member}"
1063 }
1064
1065 check_builtin(){
1066     log check_builtin "$@"
1067     name=$1
1068     headers=$2
1069     builtin=$3
1070     shift 3
1071     disable "$name"
1072     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1073 }
1074
1075 require(){
1076     name="$1"
1077     header="$2"
1078     func="$3"
1079     shift 3
1080     check_lib $header $func "$@" || die "ERROR: $name not found"
1081 }
1082
1083 require2(){
1084     name="$1"
1085     headers="$2"
1086     func="$3"
1087     shift 3
1088     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1089 }
1090
1091 require_cpp(){
1092     name="$1"
1093     headers="$2"
1094     classes="$3"
1095     shift 3
1096     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1097 }
1098
1099 require_pkg_config(){
1100     pkg="$1"
1101     check_pkg_config "$@" || die "ERROR: $pkg not found"
1102     add_cflags    $(get_safe ${pkg}_cflags)
1103     add_extralibs $(get_safe ${pkg}_libs)
1104 }
1105
1106 require_libfreetype(){
1107     log require_libfreetype "$@"
1108     pkg="freetype2"
1109     check_cmd $pkg_config --exists --print-errors $pkg \
1110       || die "ERROR: $pkg not found"
1111     pkg_cflags=$($pkg_config --cflags $pkg)
1112     pkg_libs=$($pkg_config --libs $pkg)
1113     {
1114         echo "#include <ft2build.h>"
1115         echo "#include FT_FREETYPE_H"
1116         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1117         echo "int main(void) { return 0; }"
1118     } | check_ld "cc" $pkg_cflags $pkg_libs \
1119       && set_safe ${pkg}_cflags $pkg_cflags \
1120       && set_safe ${pkg}_libs   $pkg_libs \
1121       || die "ERROR: $pkg not found"
1122     add_cflags    $(get_safe ${pkg}_cflags)
1123     add_extralibs $(get_safe ${pkg}_libs)
1124 }
1125
1126 hostcc_o(){
1127     eval printf '%s\\n' $HOSTCC_O
1128 }
1129
1130 check_host_cc(){
1131     log check_host_cc "$@"
1132     cat > $TMPC
1133     log_file $TMPC
1134     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1135 }
1136
1137 check_host_cppflags(){
1138     log check_host_cppflags "$@"
1139     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1140 int x;
1141 EOF
1142 }
1143
1144 check_host_cflags(){
1145     log check_host_cflags "$@"
1146     set -- $($host_cflags_filter "$@")
1147     check_host_cc "$@" <<EOF && append host_cflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 apply(){
1153     file=$1
1154     shift
1155     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1156 }
1157
1158 cp_if_changed(){
1159     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1160     mkdir -p "$(dirname $2)"
1161     $cp_f "$1" "$2"
1162 }
1163
1164 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1165 # system-dependent things.
1166
1167 COMPONENT_LIST="
1168     bsfs
1169     decoders
1170     demuxers
1171     encoders
1172     filters
1173     hwaccels
1174     indevs
1175     muxers
1176     outdevs
1177     parsers
1178     protocols
1179 "
1180
1181 EXTERNAL_LIBRARY_LIST="
1182     avisynth
1183     bzlib
1184     crystalhd
1185     fontconfig
1186     frei0r
1187     gnutls
1188     iconv
1189     ladspa
1190     libaacplus
1191     libass
1192     libbluray
1193     libcaca
1194     libcdio
1195     libcelt
1196     libdc1394
1197     libfaac
1198     libfdk_aac
1199     libflite
1200     libfreetype
1201     libgme
1202     libgsm
1203     libiec61883
1204     libilbc
1205     libmodplug
1206     libmp3lame
1207     libnut
1208     libopencore_amrnb
1209     libopencore_amrwb
1210     libopencv
1211     libopenjpeg
1212     libopus
1213     libpulse
1214     libquvi
1215     librtmp
1216     libschroedinger
1217     libshine
1218     libsoxr
1219     libspeex
1220     libssh
1221     libstagefright_h264
1222     libtheora
1223     libtwolame
1224     libutvideo
1225     libv4l2
1226     libvidstab
1227     libvo_aacenc
1228     libvo_amrwbenc
1229     libvorbis
1230     libvpx
1231     libwavpack
1232     libx264
1233     libxavs
1234     libxvid
1235     libzmq
1236     libzvbi
1237     openal
1238     opencl
1239     openssl
1240     x11grab
1241     zlib
1242 "
1243
1244 DOCUMENT_LIST="
1245     doc
1246     htmlpages
1247     manpages
1248     podpages
1249     txtpages
1250 "
1251
1252 HWACCEL_LIST="
1253     dxva2
1254     vaapi
1255     vda
1256     vdpau
1257 "
1258
1259 LIBRARY_LIST="
1260     avcodec
1261     avdevice
1262     avfilter
1263     avformat
1264     avresample
1265     avutil
1266     postproc
1267     swresample
1268     swscale
1269 "
1270
1271 PROGRAM_LIST="
1272     ffplay
1273     ffprobe
1274     ffserver
1275     ffmpeg
1276 "
1277
1278 CONFIG_LIST="
1279     $COMPONENT_LIST
1280     $DOCUMENT_LIST
1281     $EXTERNAL_LIBRARY_LIST
1282     $HWACCEL_LIST
1283     $LIBRARY_LIST
1284     $PROGRAM_LIST
1285     dct
1286     dwt
1287     error_resilience
1288     fast_unaligned
1289     fft
1290     ftrapv
1291     gpl
1292     gray
1293     hardcoded_tables
1294     incompatible_libav_abi
1295     incompatible_fork_abi
1296     lsp
1297     lzo
1298     mdct
1299     memalign_hack
1300     memory_poisoning
1301     network
1302     nonfree
1303     pic
1304     raise_major
1305     rdft
1306     runtime_cpudetect
1307     safe_bitstream_reader
1308     shared
1309     small
1310     sram
1311     static
1312     swscale_alpha
1313     thumb
1314     version3
1315     xmm_clobber_test
1316 "
1317
1318 THREADS_LIST='
1319     pthreads
1320     w32threads
1321     os2threads
1322 '
1323
1324 ATOMICS_LIST='
1325     atomics_gcc
1326     atomics_suncc
1327     atomics_win32
1328 '
1329
1330 ARCH_LIST='
1331     aarch64
1332     alpha
1333     arm
1334     avr32
1335     avr32_ap
1336     avr32_uc
1337     bfin
1338     ia64
1339     m68k
1340     mips
1341     mips64
1342     parisc
1343     ppc
1344     ppc64
1345     s390
1346     sh4
1347     sparc
1348     sparc64
1349     tilegx
1350     tilepro
1351     tomi
1352     x86
1353     x86_32
1354     x86_64
1355 '
1356
1357 ARCH_EXT_LIST_ARM='
1358     armv5te
1359     armv6
1360     armv6t2
1361     neon
1362     vfp
1363     vfpv3
1364 '
1365
1366 ARCH_EXT_LIST_X86='
1367     amd3dnow
1368     amd3dnowext
1369     avx
1370     avx2
1371     fma4
1372     i686
1373     mmx
1374     mmxext
1375     sse
1376     sse2
1377     sse3
1378     sse4
1379     sse42
1380     ssse3
1381 '
1382
1383 ARCH_EXT_LIST="
1384     $ARCH_EXT_LIST_ARM
1385     $ARCH_EXT_LIST_X86
1386     altivec
1387     ppc4xx
1388     vis
1389     mipsfpu
1390     mips32r2
1391     mipsdspr1
1392     mipsdspr2
1393 "
1394
1395 HAVE_LIST_CMDLINE='
1396     inline_asm
1397     symver
1398     yasm
1399 '
1400
1401 HAVE_LIST_PUB='
1402     bigendian
1403     fast_unaligned
1404     incompatible_libav_abi
1405     incompatible_fork_abi
1406 '
1407
1408 MATH_FUNCS="
1409     atanf
1410     atan2f
1411     cbrt
1412     cbrtf
1413     cosf
1414     exp2
1415     exp2f
1416     expf
1417     isinf
1418     isnan
1419     ldexpf
1420     llrint
1421     llrintf
1422     log2
1423     log2f
1424     log10f
1425     lrint
1426     lrintf
1427     powf
1428     rint
1429     round
1430     roundf
1431     sinf
1432     trunc
1433     truncf
1434 "
1435
1436 HAVE_LIST="
1437     $ARCH_EXT_LIST
1438     $(add_suffix _external $ARCH_EXT_LIST)
1439     $(add_suffix _inline   $ARCH_EXT_LIST)
1440     $HAVE_LIST_CMDLINE
1441     $HAVE_LIST_PUB
1442     $THREADS_LIST
1443     $ATOMICS_LIST
1444     $MATH_FUNCS
1445     access
1446     aligned_malloc
1447     aligned_stack
1448     alsa_asoundlib_h
1449     altivec_h
1450     arpa_inet_h
1451     asm_mod_q
1452     asm_mod_y
1453     asm_types_h
1454     atomic_cas_ptr
1455     atomics_native
1456     attribute_may_alias
1457     attribute_packed
1458     cdio_paranoia_h
1459     cdio_paranoia_paranoia_h
1460     CL_cl_h
1461     clock_gettime
1462     closesocket
1463     CommandLineToArgvW
1464     cpunop
1465     CryptGenRandom
1466     dcbzl
1467     dev_bktr_ioctl_bt848_h
1468     dev_bktr_ioctl_meteor_h
1469     dev_ic_bt8xx_h
1470     dev_video_bktr_ioctl_bt848_h
1471     dev_video_meteor_ioctl_meteor_h
1472     direct_h
1473     dlfcn_h
1474     dlopen
1475     dos_paths
1476     dxva_h
1477     ebp_available
1478     ebx_available
1479     fast_64bit
1480     fast_clz
1481     fast_cmov
1482     fcntl
1483     fork
1484     getaddrinfo
1485     gethrtime
1486     getopt
1487     GetProcessAffinityMask
1488     GetProcessMemoryInfo
1489     GetProcessTimes
1490     GetSystemTimeAsFileTime
1491     getrusage
1492     getservbyport
1493     gettimeofday
1494     glob
1495     gnu_as
1496     gsm_h
1497     ibm_asm
1498     inet_aton
1499     io_h
1500     inline_asm_labels
1501     isatty
1502     jack_port_get_latency_range
1503     kbhit
1504     ldbrx
1505     libdc1394_1
1506     libdc1394_2
1507     local_aligned_16
1508     local_aligned_8
1509     localtime_r
1510     loongson
1511     lzo1x_999_compress
1512     machine_ioctl_bt848_h
1513     machine_ioctl_meteor_h
1514     machine_rw_barrier
1515     makeinfo
1516     malloc_h
1517     MapViewOfFile
1518     memalign
1519     MemoryBarrier
1520     mkstemp
1521     mm_empty
1522     mmap
1523     mprotect
1524     msvcrt
1525     nanosleep
1526     openjpeg_1_5_openjpeg_h
1527     PeekNamedPipe
1528     perl
1529     pod2man
1530     poll_h
1531     posix_memalign
1532     pragma_deprecated
1533     pthread_cancel
1534     rdtsc
1535     rsync_contimeout
1536     sarestart
1537     sched_getaffinity
1538     sdl
1539     SetConsoleTextAttribute
1540     setmode
1541     setrlimit
1542     Sleep
1543     sndio_h
1544     socklen_t
1545     soundcard_h
1546     strerror_r
1547     struct_addrinfo
1548     struct_group_source_req
1549     struct_ip_mreq_source
1550     struct_ipv6_mreq
1551     struct_pollfd
1552     struct_rusage_ru_maxrss
1553     struct_sctp_event_subscribe
1554     struct_sockaddr_in6
1555     struct_sockaddr_sa_len
1556     struct_sockaddr_storage
1557     struct_stat_st_mtim_tv_nsec
1558     struct_v4l2_frmivalenum_discrete
1559     symver_asm_label
1560     symver_gnu_asm
1561     sync_val_compare_and_swap
1562     sysconf
1563     sysctl
1564     sys_mman_h
1565     sys_param_h
1566     sys_resource_h
1567     sys_select_h
1568     sys_soundcard_h
1569     sys_time_h
1570     sys_un_h
1571     sys_videoio_h
1572     termios_h
1573     texi2html
1574     threads
1575     unistd_h
1576     usleep
1577     vfp_args
1578     VirtualAlloc
1579     windows_h
1580     winsock2_h
1581     xform_asm
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     h264chroma
1597     h264dsp
1598     h264pred
1599     h264qpel
1600     hpeldsp
1601     huffman
1602     lgplv3
1603     lpc
1604     mpegaudio
1605     mpegaudiodsp
1606     mpegvideo
1607     mpegvideoenc
1608     nettle
1609     rangecoder
1610     riffdec
1611     riffenc
1612     rtpdec
1613     rtpenc_chain
1614     sinewin
1615     videodsp
1616     vp3dsp
1617 "
1618
1619 CMDLINE_SELECT="
1620     $ARCH_EXT_LIST
1621     $CONFIG_LIST
1622     $HAVE_LIST_CMDLINE
1623     $THREADS_LIST
1624     asm
1625     cross_compile
1626     debug
1627     extra_warnings
1628     logging
1629     lto
1630     optimizations
1631     stripping
1632 "
1633
1634 PATHS_LIST='
1635     bindir
1636     datadir
1637     docdir
1638     incdir
1639     libdir
1640     mandir
1641     prefix
1642     shlibdir
1643 '
1644
1645 CMDLINE_SET="
1646     $PATHS_LIST
1647     ar
1648     arch
1649     as
1650     assert_level
1651     build_suffix
1652     cc
1653     cpu
1654     cross_prefix
1655     cxx
1656     dep_cc
1657     extra_version
1658     host_cc
1659     host_cflags
1660     host_ld
1661     host_ldflags
1662     host_libs
1663     host_os
1664     install
1665     ld
1666     logfile
1667     malloc_prefix
1668     nm
1669     optflags
1670     pkg_config
1671     progs_suffix
1672     random_seed
1673     samples
1674     strip
1675     sysinclude
1676     sysroot
1677     target_exec
1678     target_os
1679     target_path
1680     target_samples
1681     tempprefix
1682     toolchain
1683     valgrind
1684     yasmexe
1685 "
1686
1687 CMDLINE_APPEND="
1688     extra_cflags
1689     extra_cxxflags
1690     host_cppflags
1691 "
1692
1693 # code dependency declarations
1694
1695 # architecture extensions
1696
1697 armv5te_deps="arm"
1698 armv6_deps="arm"
1699 armv6t2_deps="arm"
1700 neon_deps="arm"
1701 vfp_deps="arm"
1702 vfpv3_deps="vfp"
1703
1704 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1705
1706 mipsfpu_deps="mips"
1707 mips32r2_deps="mips"
1708 mipsdspr1_deps="mips"
1709 mipsdspr2_deps="mips"
1710
1711 altivec_deps="ppc"
1712 ppc4xx_deps="ppc"
1713
1714 vis_deps="sparc"
1715
1716 cpunop_deps="i686"
1717 x86_64_select="i686"
1718 x86_64_suggest="fast_cmov"
1719
1720 amd3dnow_deps="mmx"
1721 amd3dnowext_deps="amd3dnow"
1722 mmx_deps="x86"
1723 mmxext_deps="mmx"
1724 sse_deps="mmxext"
1725 sse2_deps="sse"
1726 sse3_deps="sse2"
1727 ssse3_deps="sse3"
1728 sse4_deps="ssse3"
1729 sse42_deps="sse4"
1730 avx_deps="sse42"
1731 fma4_deps="avx"
1732 avx2_deps="avx"
1733
1734 mmx_external_deps="yasm"
1735 mmx_inline_deps="inline_asm"
1736 mmx_suggest="mmx_external mmx_inline"
1737
1738 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1739     eval dep=\$${ext}_deps
1740     eval ${ext}_external_deps='"${dep}_external"'
1741     eval ${ext}_inline_deps='"${dep}_inline"'
1742     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1743 done
1744
1745 aligned_stack_if_any="ppc x86"
1746 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1747 fast_clz_if_any="alpha avr32 mips ppc x86"
1748 fast_unaligned_if_any="ppc x86"
1749
1750 inline_asm_deps="!tms470"
1751 need_memalign="altivec neon sse"
1752
1753 symver_if_any="symver_asm_label symver_gnu_asm"
1754
1755 log2_deps="!msvcrt"
1756
1757 # subsystems
1758 dct_select="rdft"
1759 error_resilience_select="dsputil"
1760 frame_thread_encoder_deps="encoders threads"
1761 lpc_select="dsputil"
1762 mdct_select="fft"
1763 rdft_select="fft"
1764 mpegaudio_select="mpegaudiodsp"
1765 mpegaudiodsp_select="dct"
1766 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1767 mpegvideoenc_select="mpegvideo"
1768
1769 # decoders / encoders
1770 aac_decoder_select="mdct sinewin"
1771 aac_encoder_select="audio_frame_queue mdct sinewin"
1772 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1773 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1774 ac3_encoder_select="mdct ac3dsp dsputil"
1775 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1776 aic_decoder_select="dsputil golomb"
1777 alac_encoder_select="lpc"
1778 als_decoder_select="dsputil"
1779 amrnb_decoder_select="lsp"
1780 amrwb_decoder_select="lsp"
1781 amv_decoder_select="dsputil hpeldsp exif"
1782 amv_encoder_select="aandcttables"
1783 ape_decoder_select="dsputil"
1784 asv1_decoder_select="dsputil"
1785 asv1_encoder_select="dsputil"
1786 asv2_decoder_select="dsputil"
1787 asv2_encoder_select="dsputil"
1788 atrac1_decoder_select="mdct sinewin"
1789 atrac3_decoder_select="mdct"
1790 avrn_decoder_select="exif"
1791 bink_decoder_select="dsputil hpeldsp"
1792 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1793 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1794 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1795 cllc_decoder_select="dsputil"
1796 comfortnoise_encoder_select="lpc"
1797 cook_decoder_select="dsputil mdct sinewin"
1798 cscd_decoder_select="lzo"
1799 cscd_decoder_suggest="zlib"
1800 dca_decoder_select="mdct"
1801 dirac_decoder_select="dsputil dwt golomb videodsp"
1802 dnxhd_decoder_select="dsputil"
1803 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1804 dvvideo_decoder_select="dsputil"
1805 dvvideo_encoder_select="dsputil"
1806 dxa_decoder_select="zlib"
1807 eac3_decoder_select="ac3_decoder"
1808 eac3_encoder_select="ac3_encoder"
1809 eamad_decoder_select="aandcttables dsputil mpegvideo"
1810 eatgq_decoder_select="aandcttables"
1811 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1812 exr_decoder_select="zlib"
1813 ffv1_decoder_select="dsputil golomb rangecoder"
1814 ffv1_encoder_select="dsputil rangecoder"
1815 ffvhuff_decoder_select="dsputil"
1816 ffvhuff_encoder_select="dsputil huffman"
1817 flac_decoder_select="golomb"
1818 flac_encoder_select="dsputil golomb lpc"
1819 flashsv_decoder_select="zlib"
1820 flashsv_encoder_select="zlib"
1821 flashsv2_encoder_select="zlib"
1822 flashsv2_decoder_select="zlib"
1823 flv_decoder_select="h263_decoder"
1824 flv_encoder_select="h263_encoder"
1825 fourxm_decoder_select="dsputil"
1826 fraps_decoder_select="dsputil huffman"
1827 g2m_decoder_select="dsputil zlib"
1828 g729_decoder_select="dsputil"
1829 h261_decoder_select="error_resilience mpegvideo"
1830 h261_encoder_select="aandcttables mpegvideoenc"
1831 h263_decoder_select="error_resilience h263_parser mpegvideo"
1832 h263_encoder_select="aandcttables mpegvideoenc"
1833 h263i_decoder_select="h263_decoder"
1834 h263p_encoder_select="h263_encoder"
1835 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1836 h264_decoder_suggest="error_resilience"
1837 hevc_decoder_select="dsputil golomb videodsp"
1838 huffyuv_decoder_select="dsputil"
1839 huffyuv_encoder_select="dsputil huffman"
1840 iac_decoder_select="dsputil fft mdct sinewin"
1841 imc_decoder_select="dsputil fft mdct sinewin"
1842 indeo3_decoder_select="hpeldsp"
1843 interplay_video_decoder_select="hpeldsp"
1844 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1845 jpegls_encoder_select="golomb"
1846 jv_decoder_select="dsputil"
1847 lagarith_decoder_select="dsputil"
1848 ljpeg_encoder_select="aandcttables mpegvideoenc"
1849 loco_decoder_select="golomb"
1850 mdec_decoder_select="dsputil error_resilience mpegvideo"
1851 metasound_decoder_select="lsp mdct sinewin"
1852 mimic_decoder_select="dsputil hpeldsp"
1853 mjpeg_decoder_select="dsputil hpeldsp exif"
1854 mjpegb_decoder_select="dsputil hpeldsp exif"
1855 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1856 mlp_decoder_select="dsputil mlp_parser"
1857 motionpixels_decoder_select="dsputil"
1858 mp1_decoder_select="mpegaudio"
1859 mp1float_decoder_select="mpegaudio"
1860 mp2_decoder_select="mpegaudio"
1861 mp2float_decoder_select="mpegaudio"
1862 mp3_decoder_select="mpegaudio"
1863 mp3adu_decoder_select="mpegaudio"
1864 mp3adufloat_decoder_select="mpegaudio"
1865 mp3float_decoder_select="mpegaudio"
1866 mp3on4_decoder_select="mpegaudio"
1867 mp3on4float_decoder_select="mpegaudio"
1868 mpc7_decoder_select="dsputil mpegaudiodsp"
1869 mpc8_decoder_select="dsputil mpegaudiodsp"
1870 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1871 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1872 mpeg1video_decoder_select="error_resilience mpegvideo"
1873 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1874 mpeg2video_decoder_select="error_resilience mpegvideo"
1875 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1876 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1877 mpeg4_encoder_select="h263_encoder"
1878 msmpeg4v1_decoder_select="h263_decoder"
1879 msmpeg4v2_decoder_select="h263_decoder"
1880 msmpeg4v2_encoder_select="h263_encoder"
1881 msmpeg4v3_decoder_select="h263_decoder"
1882 msmpeg4v3_encoder_select="h263_encoder"
1883 mss2_decoder_select="error_resilience vc1_decoder"
1884 mxpeg_decoder_select="dsputil hpeldsp exif"
1885 nellymoser_decoder_select="mdct sinewin"
1886 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1887 nuv_decoder_select="dsputil lzo"
1888 png_decoder_select="zlib"
1889 png_encoder_select="dsputil zlib"
1890 prores_decoder_select="dsputil"
1891 prores_encoder_select="dsputil"
1892 qcelp_decoder_select="lsp"
1893 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1894 ra_144_encoder_select="audio_frame_queue lpc"
1895 ralf_decoder_select="golomb"
1896 rtjpeg_decoder_select="dsputil"
1897 rv10_decoder_select="error_resilience h263_decoder"
1898 rv10_encoder_select="h263_encoder"
1899 rv20_decoder_select="error_resilience h263_decoder"
1900 rv20_encoder_select="h263_encoder"
1901 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1902 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1903 shorten_decoder_select="golomb"
1904 sipr_decoder_select="lsp"
1905 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1906 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1907 sonic_decoder_select="golomb"
1908 sonic_encoder_select="golomb"
1909 sonic_ls_encoder_select="golomb"
1910 sp5x_decoder_select="dsputil hpeldsp exif"
1911 svq1_decoder_select="hpeldsp"
1912 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1913 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1914 svq3_decoder_suggest="error_resilience zlib"
1915 tak_decoder_select="dsputil"
1916 theora_decoder_select="vp3_decoder"
1917 tiff_decoder_suggest="zlib"
1918 tiff_encoder_suggest="zlib"
1919 thp_decoder_select="dsputil hpeldsp exif"
1920 truehd_decoder_select="mlp_parser"
1921 truemotion2_decoder_select="dsputil"
1922 truespeech_decoder_select="dsputil"
1923 tscc_decoder_select="zlib"
1924 twinvq_decoder_select="mdct lsp sinewin"
1925 utvideo_decoder_select="dsputil"
1926 utvideo_encoder_select="dsputil huffman"
1927 vble_decoder_select="dsputil"
1928 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1929 vc1image_decoder_select="vc1_decoder"
1930 vorbis_decoder_select="mdct"
1931 vorbis_encoder_select="mdct"
1932 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1933 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1934 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1935 vp6a_decoder_select="vp6_decoder"
1936 vp6f_decoder_select="vp6_decoder"
1937 vp8_decoder_select="h264pred videodsp"
1938 vp9_decoder_select="videodsp"
1939 webp_decoder_select="vp8_decoder"
1940 wmapro_decoder_select="mdct sinewin"
1941 wmav1_decoder_select="mdct sinewin"
1942 wmav1_encoder_select="mdct sinewin"
1943 wmav2_decoder_select="mdct sinewin"
1944 wmav2_encoder_select="mdct sinewin"
1945 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1946 wmv1_decoder_select="h263_decoder"
1947 wmv1_encoder_select="h263_encoder"
1948 wmv2_decoder_select="h263_decoder videodsp"
1949 wmv2_encoder_select="h263_encoder"
1950 wmv3_decoder_select="vc1_decoder"
1951 wmv3image_decoder_select="wmv3_decoder"
1952 zerocodec_decoder_select="zlib"
1953 zlib_decoder_select="zlib"
1954 zlib_encoder_select="zlib"
1955 zmbv_decoder_select="zlib"
1956 zmbv_encoder_select="zlib"
1957
1958 # hardware accelerators
1959 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1960 dxva2_deps="dxva2api_h"
1961 vaapi_deps="va_va_h"
1962 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1963 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1964 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1965
1966 h263_vaapi_hwaccel_deps="vaapi"
1967 h263_vaapi_hwaccel_select="h263_decoder"
1968 h263_vdpau_hwaccel_deps="vdpau"
1969 h263_vdpau_hwaccel_select="h263_decoder"
1970 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1971 h264_dxva2_hwaccel_deps="dxva2"
1972 h264_dxva2_hwaccel_select="h264_decoder"
1973 h264_vaapi_hwaccel_deps="vaapi"
1974 h264_vaapi_hwaccel_select="h264_decoder"
1975 h264_vda_decoder_deps="vda"
1976 h264_vda_decoder_select="h264_decoder"
1977 h264_vda_hwaccel_deps="vda"
1978 h264_vda_hwaccel_select="h264_decoder"
1979 h264_vdpau_decoder_deps="vdpau"
1980 h264_vdpau_decoder_select="h264_decoder"
1981 h264_vdpau_hwaccel_deps="vdpau"
1982 h264_vdpau_hwaccel_select="h264_decoder"
1983 mpeg_vdpau_decoder_deps="vdpau"
1984 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1985 mpeg1_vdpau_decoder_deps="vdpau"
1986 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1987 mpeg1_vdpau_hwaccel_deps="vdpau"
1988 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1989 mpeg2_crystalhd_decoder_select="crystalhd"
1990 mpeg2_dxva2_hwaccel_deps="dxva2"
1991 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1992 mpeg2_vaapi_hwaccel_deps="vaapi"
1993 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1994 mpeg2_vdpau_hwaccel_deps="vdpau"
1995 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1996 mpeg4_crystalhd_decoder_select="crystalhd"
1997 mpeg4_vaapi_hwaccel_deps="vaapi"
1998 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1999 mpeg4_vdpau_decoder_deps="vdpau"
2000 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2001 mpeg4_vdpau_hwaccel_deps="vdpau"
2002 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2003 msmpeg4_crystalhd_decoder_select="crystalhd"
2004 vc1_crystalhd_decoder_select="crystalhd"
2005 vc1_dxva2_hwaccel_deps="dxva2"
2006 vc1_dxva2_hwaccel_select="vc1_decoder"
2007 vc1_vaapi_hwaccel_deps="vaapi"
2008 vc1_vaapi_hwaccel_select="vc1_decoder"
2009 vc1_vdpau_decoder_deps="vdpau"
2010 vc1_vdpau_decoder_select="vc1_decoder"
2011 vc1_vdpau_hwaccel_deps="vdpau"
2012 vc1_vdpau_hwaccel_select="vc1_decoder"
2013 wmv3_crystalhd_decoder_select="crystalhd"
2014 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2015 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2016 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2017 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2018
2019 # parsers
2020 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2021 mpeg4video_parser_select="error_resilience mpegvideo"
2022 mpegvideo_parser_select="error_resilience mpegvideo"
2023 vc1_parser_select="mpegvideo"
2024
2025 # external libraries
2026 libaacplus_encoder_deps="libaacplus"
2027 libcelt_decoder_deps="libcelt"
2028 libfaac_encoder_deps="libfaac"
2029 libfaac_encoder_select="audio_frame_queue"
2030 libfdk_aac_decoder_deps="libfdk_aac"
2031 libfdk_aac_encoder_deps="libfdk_aac"
2032 libfdk_aac_encoder_select="audio_frame_queue"
2033 libgme_demuxer_deps="libgme"
2034 libgsm_decoder_deps="libgsm"
2035 libgsm_encoder_deps="libgsm"
2036 libgsm_ms_decoder_deps="libgsm"
2037 libgsm_ms_encoder_deps="libgsm"
2038 libilbc_decoder_deps="libilbc"
2039 libilbc_encoder_deps="libilbc"
2040 libmodplug_demuxer_deps="libmodplug"
2041 libmp3lame_encoder_deps="libmp3lame"
2042 libmp3lame_encoder_select="audio_frame_queue"
2043 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2044 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2045 libopencore_amrnb_encoder_select="audio_frame_queue"
2046 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2047 libopenjpeg_decoder_deps="libopenjpeg"
2048 libopenjpeg_encoder_deps="libopenjpeg"
2049 libopus_decoder_deps="libopus"
2050 libopus_encoder_deps="libopus"
2051 libopus_encoder_select="audio_frame_queue"
2052 libquvi_demuxer_deps="libquvi"
2053 libschroedinger_decoder_deps="libschroedinger"
2054 libschroedinger_encoder_deps="libschroedinger"
2055 libshine_encoder_deps="libshine"
2056 libshine_encoder_select="audio_frame_queue"
2057 libspeex_decoder_deps="libspeex"
2058 libspeex_encoder_deps="libspeex"
2059 libspeex_encoder_select="audio_frame_queue"
2060 libstagefright_h264_decoder_deps="libstagefright_h264"
2061 libtheora_encoder_deps="libtheora"
2062 libtwolame_encoder_deps="libtwolame"
2063 libvo_aacenc_encoder_deps="libvo_aacenc"
2064 libvo_aacenc_encoder_select="audio_frame_queue"
2065 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2066 libvorbis_decoder_deps="libvorbis"
2067 libvorbis_encoder_deps="libvorbis"
2068 libvorbis_encoder_select="audio_frame_queue"
2069 libvpx_vp8_decoder_deps="libvpx"
2070 libvpx_vp8_encoder_deps="libvpx"
2071 libvpx_vp9_decoder_deps="libvpx"
2072 libvpx_vp9_encoder_deps="libvpx"
2073 libwavpack_encoder_deps="libwavpack"
2074 libx264_encoder_deps="libx264"
2075 libx264rgb_encoder_deps="libx264"
2076 libxavs_encoder_deps="libxavs"
2077 libxvid_encoder_deps="libxvid"
2078 libutvideo_decoder_deps="libutvideo"
2079 libutvideo_encoder_deps="libutvideo"
2080 libzvbi_teletext_decoder_deps="libzvbi"
2081
2082 # demuxers / muxers
2083 ac3_demuxer_select="ac3_parser"
2084 asf_demuxer_select="riffdec"
2085 asf_muxer_select="riffenc"
2086 asf_stream_muxer_select="asf_muxer"
2087 avi_demuxer_select="riffdec"
2088 avi_muxer_select="riffenc"
2089 avisynth_demuxer_deps="avisynth"
2090 avisynth_demuxer_select="riffdec"
2091 caf_demuxer_select="riffdec"
2092 dirac_demuxer_select="dirac_parser"
2093 dts_demuxer_select="dca_parser"
2094 dtshd_demuxer_select="dca_parser"
2095 dxa_demuxer_select="riffdec"
2096 eac3_demuxer_select="ac3_parser"
2097 f4v_muxer_select="mov_muxer"
2098 flac_demuxer_select="flac_parser"
2099 hls_muxer_select="mpegts_muxer"
2100 ipod_muxer_select="mov_muxer"
2101 ismv_muxer_select="mov_muxer"
2102 libnut_demuxer_deps="libnut"
2103 libnut_muxer_deps="libnut"
2104 matroska_audio_muxer_select="matroska_muxer"
2105 matroska_demuxer_select="riffdec"
2106 matroska_demuxer_suggest="bzlib lzo zlib"
2107 matroska_muxer_select="riffenc"
2108 mmf_muxer_select="riffenc"
2109 mov_demuxer_select="riffdec"
2110 mov_demuxer_suggest="zlib"
2111 mov_muxer_select="riffenc rtpenc_chain"
2112 mp3_demuxer_select="mpegaudio_parser"
2113 mp4_muxer_select="mov_muxer"
2114 mpegts_muxer_select="adts_muxer latm_muxer"
2115 mpegtsraw_demuxer_select="mpegts_demuxer"
2116 mxf_d10_muxer_select="mxf_muxer"
2117 nut_muxer_select="riffenc"
2118 nuv_demuxer_select="riffdec"
2119 ogg_demuxer_select="golomb"
2120 psp_muxer_select="mov_muxer"
2121 rtp_demuxer_select="sdp_demuxer"
2122 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2123 rtsp_demuxer_select="http_protocol rtpdec"
2124 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2125 sap_demuxer_select="sdp_demuxer"
2126 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2127 sdp_demuxer_select="rtpdec"
2128 smoothstreaming_muxer_select="ismv_muxer"
2129 spdif_muxer_select="aac_parser"
2130 tak_demuxer_select="tak_parser"
2131 tg2_muxer_select="mov_muxer"
2132 tgp_muxer_select="mov_muxer"
2133 vobsub_demuxer_select="mpegps_demuxer"
2134 w64_demuxer_select="wav_demuxer"
2135 w64_muxer_select="wav_muxer"
2136 wav_demuxer_select="riffdec"
2137 wav_muxer_select="riffenc"
2138 webm_muxer_select="riffenc"
2139 wtv_demuxer_select="riffdec"
2140 xmv_demuxer_select="riffdec"
2141 xwma_demuxer_select="riffdec"
2142
2143 # indevs / outdevs
2144 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2145 alsa_outdev_deps="alsa_asoundlib_h"
2146 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2147 caca_outdev_deps="libcaca"
2148 dshow_indev_deps="IBaseFilter"
2149 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2150 dv1394_indev_deps="dv1394"
2151 dv1394_indev_select="dv_demuxer"
2152 fbdev_indev_deps="linux_fb_h"
2153 fbdev_outdev_deps="linux_fb_h"
2154 iec61883_indev_deps="libiec61883"
2155 jack_indev_deps="jack_jack_h sem_timedwait"
2156 lavfi_indev_deps="avfilter"
2157 libcdio_indev_deps="libcdio"
2158 libdc1394_indev_deps="libdc1394"
2159 libv4l2_indev_deps="libv4l2"
2160 openal_indev_deps="openal"
2161 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2162 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2163 pulse_indev_deps="libpulse"
2164 pulse_outdev_deps="libpulse"
2165 sdl_outdev_deps="sdl"
2166 sndio_indev_deps="sndio_h"
2167 sndio_outdev_deps="sndio_h"
2168 v4l_indev_deps="linux_videodev_h"
2169 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2170 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2171 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2172 vfwcap_indev_extralibs="-lavicap32"
2173 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2174 xv_outdev_extralibs="-lXv -lX11 -lXext"
2175 x11grab_indev_deps="x11grab"
2176
2177 # protocols
2178 bluray_protocol_deps="libbluray"
2179 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2180 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2181 ffrtmpcrypt_protocol_select="tcp_protocol"
2182 ffrtmphttp_protocol_deps="!librtmp_protocol"
2183 ffrtmphttp_protocol_select="http_protocol"
2184 ftp_protocol_select="tcp_protocol"
2185 gopher_protocol_select="network"
2186 httpproxy_protocol_select="tcp_protocol"
2187 http_protocol_select="tcp_protocol"
2188 https_protocol_select="tls_protocol"
2189 librtmp_protocol_deps="librtmp"
2190 librtmpe_protocol_deps="librtmp"
2191 librtmps_protocol_deps="librtmp"
2192 librtmpt_protocol_deps="librtmp"
2193 librtmpte_protocol_deps="librtmp"
2194 libssh_protocol_deps="libssh"
2195 mmsh_protocol_select="http_protocol"
2196 mmst_protocol_select="network"
2197 rtmp_protocol_deps="!librtmp_protocol"
2198 rtmp_protocol_select="tcp_protocol"
2199 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2200 rtmps_protocol_deps="!librtmp_protocol"
2201 rtmps_protocol_select="tls_protocol"
2202 rtmpt_protocol_select="ffrtmphttp_protocol"
2203 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2204 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2205 rtp_protocol_select="udp_protocol"
2206 sctp_protocol_deps="struct_sctp_event_subscribe"
2207 sctp_protocol_select="network"
2208 srtp_protocol_select="rtp_protocol"
2209 tcp_protocol_select="network"
2210 tls_protocol_deps_any="openssl gnutls"
2211 tls_protocol_select="tcp_protocol"
2212 udp_protocol_select="network"
2213 unix_protocol_deps="sys_un_h"
2214 unix_protocol_select="network"
2215
2216 # filters
2217 aconvert_filter_deps="swresample"
2218 amovie_filter_deps="avcodec avformat"
2219 aresample_filter_deps="swresample"
2220 ass_filter_deps="libass"
2221 asyncts_filter_deps="avresample"
2222 atempo_filter_deps="avcodec"
2223 atempo_filter_select="rdft"
2224 azmq_filter_deps="libzmq"
2225 blackframe_filter_deps="gpl"
2226 boxblur_filter_deps="gpl"
2227 colormatrix_filter_deps="gpl"
2228 cropdetect_filter_deps="gpl"
2229 dctdnoiz_filter_deps="avcodec"
2230 dctdnoiz_filter_select="fft"
2231 delogo_filter_deps="gpl"
2232 deshake_filter_deps="avcodec"
2233 deshake_filter_select="dsputil"
2234 drawtext_filter_deps="libfreetype"
2235 ebur128_filter_deps="gpl"
2236 flite_filter_deps="libflite"
2237 frei0r_filter_deps="frei0r dlopen"
2238 frei0r_filter_extralibs='$ldl'
2239 frei0r_src_filter_deps="frei0r dlopen"
2240 frei0r_src_filter_extralibs='$ldl'
2241 geq_filter_deps="gpl"
2242 histeq_filter_deps="gpl"
2243 hqdn3d_filter_deps="gpl"
2244 interlace_filter_deps="gpl"
2245 kerndeint_filter_deps="gpl"
2246 ladspa_filter_deps="ladspa dlopen"
2247 mcdeint_filter_deps="avcodec gpl"
2248 movie_filter_deps="avcodec avformat"
2249 mp_filter_deps="gpl avcodec swscale inline_asm"
2250 mpdecimate_filter_deps="gpl avcodec"
2251 mptestsrc_filter_deps="gpl"
2252 negate_filter_deps="lut_filter"
2253 perspective_filter_deps="gpl"
2254 resample_filter_deps="avresample"
2255 ocv_filter_deps="libopencv"
2256 owdenoise_filter_deps="gpl"
2257 pan_filter_deps="swresample"
2258 phase_filter_deps="gpl"
2259 pp_filter_deps="gpl postproc"
2260 pullup_filter_deps="gpl"
2261 removelogo_filter_deps="avcodec avformat swscale"
2262 sab_filter_deps="gpl swscale"
2263 scale_filter_deps="swscale"
2264 smartblur_filter_deps="gpl swscale"
2265 showspectrum_filter_deps="avcodec"
2266 showspectrum_filter_select="rdft"
2267 spp_filter_deps="gpl avcodec"
2268 spp_filter_select="fft"
2269 stereo3d_filter_deps="gpl"
2270 subtitles_filter_deps="avformat avcodec libass"
2271 super2xsai_filter_deps="gpl"
2272 tinterlace_filter_deps="gpl"
2273 vidstabdetect_filter_deps="libvidstab"
2274 vidstabtransform_filter_deps="libvidstab"
2275 yadif_filter_deps="gpl"
2276 pixfmts_super2xsai_test_deps="super2xsai_filter"
2277 tinterlace_merge_test_deps="tinterlace_filter"
2278 tinterlace_pad_test_deps="tinterlace_filter"
2279 zmq_filter_deps="libzmq"
2280
2281 # libraries
2282 avcodec_deps="avutil"
2283 avdevice_deps="avutil avcodec avformat"
2284 avfilter_deps="avutil"
2285 avformat_deps="avutil avcodec"
2286 avresample_deps="avutil"
2287 postproc_deps="avutil gpl"
2288 swscale_deps="avutil"
2289
2290 # programs
2291 ffmpeg_deps="avcodec avfilter avformat swresample"
2292 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2293                null_filter
2294                setpts_filter trim_filter"
2295 ffplay_deps="avcodec avformat swscale swresample sdl"
2296 ffplay_select="rdft crop_filter"
2297 ffprobe_deps="avcodec avformat"
2298 ffserver_deps="avformat fork sarestart"
2299 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2300 ffserver_extralibs='$ldl'
2301
2302 # documentation
2303 podpages_deps="perl"
2304 manpages_deps="perl pod2man"
2305 htmlpages_deps="texi2html"
2306 txtpages_deps="makeinfo"
2307 doc_deps_any="manpages htmlpages podpages txtpages"
2308
2309 # default parameters
2310
2311 logfile="config.log"
2312
2313 # installation paths
2314 prefix_default="/usr/local"
2315 bindir_default='${prefix}/bin'
2316 datadir_default='${prefix}/share/ffmpeg'
2317 docdir_default='${prefix}/share/doc/ffmpeg'
2318 incdir_default='${prefix}/include'
2319 libdir_default='${prefix}/lib'
2320 mandir_default='${prefix}/share/man'
2321 shlibdir_default="$libdir_default"
2322
2323 # toolchain
2324 ar_default="ar"
2325 cc_default="gcc"
2326 cxx_default="g++"
2327 host_cc_default="gcc"
2328 cp_f="cp -f"
2329 install="install"
2330 ln_s="ln -s -f"
2331 nm_default="nm -g"
2332 objformat="elf"
2333 pkg_config_default=pkg-config
2334 ranlib="ranlib"
2335 strip_default="strip"
2336 yasmexe_default="yasm"
2337
2338 nogas=":"
2339
2340 # machine
2341 arch_default=$(uname -m)
2342 cpu="generic"
2343
2344 # OS
2345 target_os_default=$(tolower $(uname -s))
2346 host_os=$target_os_default
2347
2348 # configurable options
2349 enable $PROGRAM_LIST
2350 enable $DOCUMENT_LIST
2351 enable $(filter_out avresample $LIBRARY_LIST)
2352 enable stripping
2353
2354 enable asm
2355 enable debug
2356 enable doc
2357 enable optimizations
2358 enable runtime_cpudetect
2359 enable safe_bitstream_reader
2360 enable static
2361 enable swscale_alpha
2362
2363 # Enable hwaccels by default.
2364 enable dxva2 vaapi vdpau
2365
2366 # build settings
2367 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2368 LIBPREF="lib"
2369 LIBSUF=".a"
2370 FULLNAME='$(NAME)$(BUILDSUF)'
2371 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2372 SLIBPREF="lib"
2373 SLIBSUF=".so"
2374 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2375 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2376 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2377 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2378 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2379 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2380
2381 asflags_filter=echo
2382 cflags_filter=echo
2383 ldflags_filter=echo
2384
2385 AS_C='-c'
2386 AS_O='-o $@'
2387 CC_C='-c'
2388 CC_E='-E -o $@'
2389 CC_O='-o $@'
2390 CXX_C='-c'
2391 CXX_O='-o $@'
2392 LD_O='-o $@'
2393 LD_LIB='-l%'
2394 LD_PATH='-L'
2395 HOSTCC_C='-c'
2396 HOSTCC_O='-o $@'
2397 HOSTLD_O='-o $@'
2398
2399 host_cflags='-O3 -g'
2400 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2401 host_libs='-lm'
2402 host_cflags_filter=echo
2403 host_ldflags_filter=echo
2404
2405 target_path='$(CURDIR)'
2406
2407 # since the object filename is not given with the -MM flag, the compiler
2408 # is only able to print the basename, and we must add the path ourselves
2409 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2410 DEPFLAGS='-MM'
2411
2412 # find source path
2413 if test -f configure; then
2414     source_path=.
2415 else
2416     source_path=$(cd $(dirname "$0"); pwd)
2417     echo "$source_path" | grep -q '[[:blank:]]' &&
2418         die "Out of tree builds are impossible with whitespace in source path."
2419     test -e "$source_path/config.h" &&
2420         die "Out of tree builds are impossible with config.h in source dir."
2421 fi
2422
2423 for v in "$@"; do
2424     r=${v#*=}
2425     l=${v%"$r"}
2426     r=$(sh_quote "$r")
2427     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2428 done
2429
2430 find_things(){
2431     thing=$1
2432     pattern=$2
2433     file=$source_path/$3
2434     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2435 }
2436
2437 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2438 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2439 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2440 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2441 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2442 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2443 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2444 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2445 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2446 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2447 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2448
2449 ALL_COMPONENTS="
2450     $BSF_LIST
2451     $DECODER_LIST
2452     $DEMUXER_LIST
2453     $ENCODER_LIST
2454     $FILTER_LIST
2455     $HWACCEL_LIST
2456     $INDEV_LIST
2457     $MUXER_LIST
2458     $OUTDEV_LIST
2459     $PARSER_LIST
2460     $PROTOCOL_LIST
2461 "
2462
2463 for n in $COMPONENT_LIST; do
2464     v=$(toupper ${n%s})_LIST
2465     eval enable \$$v
2466     eval ${n}_if_any="\$$v"
2467 done
2468
2469 enable $ARCH_EXT_LIST
2470
2471 die_unknown(){
2472     echo "Unknown option \"$1\"."
2473     echo "See $0 --help for available options."
2474     exit 1
2475 }
2476
2477 print_3_columns() {
2478     cat | tr ' ' '\n' | sort | pr -r -3 -t
2479 }
2480
2481 show_list() {
2482     suffix=_$1
2483     shift
2484     echo $* | sed s/$suffix//g | print_3_columns
2485     exit 0
2486 }
2487
2488 rand_list(){
2489     IFS=', '
2490     set -- $*
2491     unset IFS
2492     for thing; do
2493         comp=${thing%:*}
2494         prob=${thing#$comp}
2495         prob=${prob#:}
2496         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2497         echo "prob ${prob:-0.5}"
2498         printf '%s\n' $comp
2499     done
2500 }
2501
2502 do_random(){
2503     action=$1
2504     shift
2505     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2506     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2507 }
2508
2509 for opt do
2510     optval="${opt#*=}"
2511     case "$opt" in
2512         --extra-ldflags=*)
2513             add_ldflags $optval
2514         ;;
2515         --extra-libs=*)
2516             add_extralibs $optval
2517         ;;
2518         --disable-devices)
2519             disable $INDEV_LIST $OUTDEV_LIST
2520         ;;
2521         --enable-debug=*)
2522             debuglevel="$optval"
2523         ;;
2524         --disable-programs)
2525             disable $PROGRAM_LIST
2526         ;;
2527         --disable-everything)
2528             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2529         ;;
2530         --disable-all)
2531             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2532             disable $LIBRARY_LIST $PROGRAM_LIST doc
2533         ;;
2534         --enable-random|--disable-random)
2535             action=${opt%%-random}
2536             do_random ${action#--} $COMPONENT_LIST
2537         ;;
2538         --enable-random=*|--disable-random=*)
2539             action=${opt%%-random=*}
2540             do_random ${action#--} $optval
2541         ;;
2542         --enable-*=*|--disable-*=*)
2543             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2544             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2545             eval list=\$$(toupper $thing)_LIST
2546             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2547             list=$(filter "$name" $list)
2548             [ "$list" = "" ] && warn "Option $opt did not match anything"
2549             $action $list
2550         ;;
2551         --enable-?*|--disable-?*)
2552             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2553             if is_in $option $COMPONENT_LIST; then
2554                 test $action = disable && action=unset
2555                 eval $action \$$(toupper ${option%s})_LIST
2556             elif is_in $option $CMDLINE_SELECT; then
2557                 $action $option
2558             else
2559                 die_unknown $opt
2560             fi
2561         ;;
2562         --list-*)
2563             NAME="${opt#--list-}"
2564             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2565             NAME=${NAME%s}
2566             eval show_list $NAME \$$(toupper $NAME)_LIST
2567         ;;
2568         --help|-h) show_help
2569         ;;
2570         --fatal-warnings) enable fatal_warnings
2571         ;;
2572         *)
2573             optname="${opt%%=*}"
2574             optname="${optname#--}"
2575             optname=$(echo "$optname" | sed 's/-/_/g')
2576             if is_in $optname $CMDLINE_SET; then
2577                 eval $optname='$optval'
2578             elif is_in $optname $CMDLINE_APPEND; then
2579                 append $optname "$optval"
2580             else
2581                 die_unknown $opt
2582             fi
2583         ;;
2584     esac
2585 done
2586
2587 disabled logging && logfile=/dev/null
2588
2589 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2590 set >> $logfile
2591
2592 test -n "$cross_prefix" && enable cross_compile
2593
2594 if enabled cross_compile; then
2595     test -n "$arch" && test -n "$target_os" ||
2596         die "Must specify target arch and OS when cross-compiling"
2597 fi
2598
2599 ar_default="${cross_prefix}${ar_default}"
2600 cc_default="${cross_prefix}${cc_default}"
2601 cxx_default="${cross_prefix}${cxx_default}"
2602 nm_default="${cross_prefix}${nm_default}"
2603 pkg_config_default="${cross_prefix}${pkg_config_default}"
2604 ranlib="${cross_prefix}${ranlib}"
2605 strip_default="${cross_prefix}${strip_default}"
2606
2607 sysinclude_default="${sysroot}/usr/include"
2608
2609 test -n "$valgrind" && toolchain="valgrind-memcheck"
2610
2611 case "$toolchain" in
2612     clang-asan)
2613         cc_default="clang"
2614         add_cflags  -fsanitize=address
2615         add_ldflags -fsanitize=address
2616     ;;
2617     clang-tsan)
2618         cc_default="clang"
2619         add_cflags  -fsanitize=thread -pie
2620         add_ldflags -fsanitize=thread -pie
2621     ;;
2622     gcc-asan)
2623         cc_default="gcc"
2624         add_cflags  -fsanitize=address
2625         add_ldflags -fsanitize=address
2626     ;;
2627     gcc-tsan)
2628         cc_default="gcc"
2629         add_cflags  -fsanitize=thread -pie -fPIC
2630         add_ldflags -fsanitize=thread -pie -fPIC
2631     ;;
2632     valgrind-massif)
2633         target_exec_default=${valgrind:-"valgrind"}
2634         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"
2635     ;;
2636     valgrind-memcheck)
2637         target_exec_default=${valgrind:-"valgrind"}
2638         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2639     ;;
2640     msvc)
2641         cc_default="c99wrap cl"
2642         ld_default="c99wrap link"
2643         nm_default="dumpbin -symbols"
2644         ar_default="lib"
2645         target_os_default="win32"
2646     ;;
2647     icl)
2648         cc_default="c99wrap -noconv icl"
2649         ld_default="c99wrap xilink"
2650         nm_default="dumpbin -symbols"
2651         ar_default="xilib"
2652         target_os_default="win32"
2653     ;;
2654     gcov)
2655         add_cflags  -fprofile-arcs -ftest-coverage
2656         add_ldflags -fprofile-arcs -ftest-coverage
2657     ;;
2658     ?*)
2659         die "Unknown toolchain $toolchain"
2660     ;;
2661 esac
2662
2663 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2664 enabled cross_compile || host_cc_default=$cc
2665 set_default host_cc
2666
2667 if ! $pkg_config --version >/dev/null 2>&1; then
2668     warn "$pkg_config not found, library detection may fail."
2669     pkg_config=false
2670 fi
2671
2672 exesuf() {
2673     case $1 in
2674         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2675     esac
2676 }
2677
2678 EXESUF=$(exesuf $target_os)
2679 HOSTEXESUF=$(exesuf $host_os)
2680
2681 # set temporary file name
2682 : ${TMPDIR:=$TEMPDIR}
2683 : ${TMPDIR:=$TMP}
2684 : ${TMPDIR:=/tmp}
2685
2686 if [ -n "$tempprefix" ] ; then
2687     mktemp(){
2688         echo $tempprefix.${HOSTNAME}.${UID}
2689     }
2690 elif ! check_cmd mktemp -u XXXXXX; then
2691     # simple replacement for missing mktemp
2692     # NOT SAFE FOR GENERAL USE
2693     mktemp(){
2694         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2695     }
2696 fi
2697
2698 tmpfile(){
2699     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2700         (set -C; exec > $tmp) 2>/dev/null ||
2701         die "Unable to create temporary file in $TMPDIR."
2702     append TMPFILES $tmp
2703     eval $1=$tmp
2704 }
2705
2706 trap 'rm -f -- $TMPFILES' EXIT
2707
2708 tmpfile TMPASM .asm
2709 tmpfile TMPC   .c
2710 tmpfile TMPCPP .cpp
2711 tmpfile TMPE   $EXESUF
2712 tmpfile TMPH   .h
2713 tmpfile TMPO   .o
2714 tmpfile TMPS   .S
2715 tmpfile TMPSH  .sh
2716 tmpfile TMPV   .ver
2717
2718 unset -f mktemp
2719
2720 chmod +x $TMPE
2721
2722 # make sure we can execute files in $TMPDIR
2723 cat > $TMPSH 2>> $logfile <<EOF
2724 #! /bin/sh
2725 EOF
2726 chmod +x $TMPSH >> $logfile 2>&1
2727 if ! $TMPSH >> $logfile 2>&1; then
2728     cat <<EOF
2729 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2730 variable to another directory and make sure that it is not mounted noexec.
2731 EOF
2732     die "Sanity test failed."
2733 fi
2734
2735 ccc_flags(){
2736     for flag; do
2737         case $flag in
2738             -std=c99)           echo -c99                       ;;
2739             -mcpu=*)            echo -arch ${flag#*=}           ;;
2740             -mieee)             echo -ieee                      ;;
2741             -O*|-fast)          echo $flag                      ;;
2742             -fno-math-errno)    echo -assume nomath_errno       ;;
2743             -g)                 echo -g3                        ;;
2744             -Wall)              echo -msg_enable level2         ;;
2745             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2746             -Wl,*)              echo $flag                      ;;
2747             -f*|-W*)                                            ;;
2748             *)                  echo $flag                      ;;
2749         esac
2750    done
2751 }
2752
2753 cparser_flags(){
2754     for flag; do
2755         case $flag in
2756             -Wno-switch)             echo -Wno-switch-enum ;;
2757             -Wno-format-zero-length) ;;
2758             -Wdisabled-optimization) ;;
2759             -Wno-pointer-sign)       echo -Wno-other ;;
2760             *)                       echo $flag ;;
2761         esac
2762     done
2763 }
2764
2765 msvc_common_flags(){
2766     for flag; do
2767         case $flag in
2768             # In addition to specifying certain flags under the compiler
2769             # specific filters, they must be specified here as well or else the
2770             # generic catch all at the bottom will print the original flag.
2771             -Wall)                ;;
2772             -std=c99)             ;;
2773             # Common flags
2774             -fomit-frame-pointer) ;;
2775             -g)                   echo -Z7 ;;
2776             -fno-math-errno)      ;;
2777             -fno-common)          ;;
2778             -fno-signed-zeros)    ;;
2779             -fPIC)                ;;
2780             -mthumb)              ;;
2781             -march=*)             ;;
2782             -lz)                  echo zlib.lib ;;
2783             -lavifil32)           echo vfw32.lib ;;
2784             -lavicap32)           echo vfw32.lib user32.lib ;;
2785             -l*)                  echo ${flag#-l}.lib ;;
2786             *)                    echo $flag ;;
2787         esac
2788     done
2789 }
2790
2791 msvc_flags(){
2792     msvc_common_flags "$@"
2793     for flag; do
2794         case $flag in
2795             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2796                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2797                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2798                                        -wd4554 \
2799                                        -wd4273 ;;
2800         esac
2801     done
2802 }
2803
2804 icl_flags(){
2805     msvc_common_flags "$@"
2806     for flag; do
2807         case $flag in
2808             # Despite what Intel's documentation says -Wall, which is supported
2809             # on Windows, does enable remarks so disable them here.
2810             -Wall)                echo $flag -Qdiag-disable:remark ;;
2811             -std=c99)             echo -Qstd=c99 ;;
2812         esac
2813     done
2814 }
2815
2816 pgi_flags(){
2817     for flag; do
2818         case $flag in
2819             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2820             -fomit-frame-pointer) echo -Mnoframe ;;
2821             -g)                   echo -gopt ;;
2822             *)                    echo $flag ;;
2823         esac
2824     done
2825 }
2826
2827 suncc_flags(){
2828     for flag; do
2829         case $flag in
2830             -march=*|-mcpu=*)
2831                 case "${flag#*=}" in
2832                     native)                   echo -xtarget=native       ;;
2833                     v9|niagara)               echo -xarch=sparc          ;;
2834                     ultrasparc)               echo -xarch=sparcvis       ;;
2835                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2836                     i586|pentium)             echo -xchip=pentium        ;;
2837                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2838                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2839                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2840                     pentium4*)          echo -xtarget=pentium4           ;;
2841                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2842                     *-sse3)             echo -xarch=sse3                 ;;
2843                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2844                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2845                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2846                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2847                     bdver*)                    echo -xarch=avx           ;;
2848                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2849                     k8|opteron|athlon64|athlon-fx)
2850                                                echo -xarch=sse2a         ;;
2851                     athlon*)                   echo -xarch=pentium_proa  ;;
2852                 esac
2853                 ;;
2854             -std=c99)             echo -xc99              ;;
2855             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2856             -fPIC)                echo -KPIC -xcode=pic32 ;;
2857             -W*,*)                echo $flag              ;;
2858             -f*-*|-W*|-mimpure-text)                      ;;
2859             -shared)              echo -G                 ;;
2860             *)                    echo $flag              ;;
2861         esac
2862     done
2863 }
2864
2865 tms470_flags(){
2866     for flag; do
2867         case $flag in
2868             -march=*|-mcpu=*)
2869                 case "${flag#*=}" in
2870                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2871                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2872                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2873                     armv6*|arm11*)          echo -mv=6   ;;
2874                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2875                                             echo -mv=5e  ;;
2876                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2877                 esac
2878                 ;;
2879             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2880             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2881             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2882             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2883             -msoft-float)   echo --float_support=vfplib       ;;
2884             -O[0-3]|-mf=*)  echo $flag                        ;;
2885             -g)             echo -g -mn                       ;;
2886             -pds=*)         echo $flag                        ;;
2887             -D*|-I*)        echo $flag                        ;;
2888             --gcc|--abi=*)  echo $flag                        ;;
2889             -me)            echo $flag                        ;;
2890         esac
2891     done
2892 }
2893
2894 probe_cc(){
2895     pfx=$1
2896     _cc=$2
2897
2898     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2899     unset _ld_o _ldflags _ld_lib _ld_path
2900     unset _depflags _DEPCMD _DEPFLAGS
2901     _flags_filter=echo
2902
2903     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2904         true # no-op to avoid reading stdin in following checks
2905     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2906         _type=llvm_gcc
2907         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2908         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2909         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2910         _cflags_speed='-O3'
2911         _cflags_size='-Os'
2912     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2913         _type=gcc
2914         gcc_version=$($_cc --version | head -n1)
2915         gcc_basever=$($_cc -dumpversion)
2916         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2917         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2918         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2919         if ! $_cc -dumpversion | grep -q '^2\.'; then
2920             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2921         fi
2922         _cflags_speed='-O3'
2923         _cflags_size='-Os'
2924     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2925         _type=icc
2926         _ident=$($_cc --version | head -n1)
2927         _depflags='-MMD'
2928         _cflags_speed='-O3'
2929         _cflags_size='-Os'
2930         _cflags_noopt='-O1'
2931     elif $_cc -v 2>&1 | grep -q xlc; then
2932         _type=xlc
2933         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2934         _cflags_speed='-O5'
2935         _cflags_size='-O5 -qcompact'
2936     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2937         _type=ccc
2938         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2939         _DEPFLAGS='-M'
2940         _cflags_speed='-fast'
2941         _cflags_size='-O1'
2942         _flags_filter=ccc_flags
2943     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2944         test -d "$sysroot" || die "No valid sysroot specified."
2945         _type=armcc
2946         _ident=$($_cc --vsn | head -n1)
2947         armcc_conf="$PWD/armcc.conf"
2948         $_cc --arm_linux_configure                 \
2949              --arm_linux_config_file="$armcc_conf" \
2950              --configure_sysroot="$sysroot"        \
2951              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2952              die "Error creating armcc configuration file."
2953         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2954         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2955         as_default="${cross_prefix}gcc"
2956         _depflags='-MMD'
2957         _cflags_speed='-O3'
2958         _cflags_size='-Os'
2959     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2960         _type=tms470
2961         _ident=$($_cc -version | head -n1 | tr -s ' ')
2962         _flags='--gcc --abi=eabi -me'
2963         _cc_e='-ppl -fe=$@'
2964         _cc_o='-fe=$@'
2965         _depflags='-ppa -ppd=$(@:.o=.d)'
2966         _cflags_speed='-O3 -mf=5'
2967         _cflags_size='-O3 -mf=2'
2968         _flags_filter=tms470_flags
2969     elif $_cc -v 2>&1 | grep -q clang; then
2970         _type=clang
2971         _ident=$($_cc --version | head -n1)
2972         _depflags='-MMD'
2973         _cflags_speed='-O3'
2974         _cflags_size='-Os'
2975     elif $_cc -V 2>&1 | grep -q Sun; then
2976         _type=suncc
2977         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2978         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2979         _DEPFLAGS='-xM1 -xc99'
2980         _ldflags='-std=c99'
2981         _cflags_speed='-O5'
2982         _cflags_size='-O5 -xspace'
2983         _flags_filter=suncc_flags
2984     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2985         _type=pathscale
2986         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2987         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2988         _cflags_speed='-O2'
2989         _cflags_size='-Os'
2990         _flags_filter='filter_out -Wdisabled-optimization'
2991     elif $_cc -v 2>&1 | grep -q Open64; then
2992         _type=open64
2993         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2994         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2995         _cflags_speed='-O2'
2996         _cflags_size='-Os'
2997         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2998     elif $_cc -V 2>&1 | grep -q Portland; then
2999         _type=pgi
3000         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3001         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3002         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3003         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3004         _cflags_noopt="-O"
3005         _flags_filter=pgi_flags
3006     elif $_cc 2>&1 | grep -q Microsoft; then
3007         _type=msvc
3008         _ident=$($cc 2>&1 | head -n1)
3009         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3010         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3011         _cflags_speed="-O2"
3012         _cflags_size="-O1"
3013         # Nonstandard output options, to avoid msys path conversion issues.
3014         # Relies on wrapper to remap it.
3015         if $_cc 2>&1 | grep -q Linker; then
3016             _ld_o='-out $@'
3017         else
3018             _ld_o='-Fe$@'
3019         fi
3020         _cc_o='-Fo $@'
3021         _cc_e='-P -Fi $@'
3022         _flags_filter=msvc_flags
3023         _ld_lib='lib%.a'
3024         _ld_path='-libpath:'
3025         _flags='-nologo'
3026         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3027         if [ $pfx = hostcc ]; then
3028             append _cflags -Dsnprintf=_snprintf
3029         fi
3030         disable stripping
3031     elif $_cc 2>&1 | grep -q Intel; then
3032         _type=icl
3033         _ident=$($cc 2>&1 | head -n1)
3034         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3035         # Not only is O3 broken on 13.x+ but it is slower on all previous
3036         # versions (tested) as well.
3037         _cflags_speed="-O2"
3038         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3039         # Nonstandard output options, to avoid msys path conversion issues.
3040         # Relies on wrapper to remap it.
3041         if $_cc 2>&1 | grep -q Linker; then
3042             _ld_o='-out $@'
3043         else
3044             _ld_o='-Fe$@'
3045         fi
3046         _cc_o='-Fo $@'
3047         _cc_e='-P'
3048         _flags_filter=icl_flags
3049         _ld_lib='lib%.a'
3050         _ld_path='-libpath:'
3051         # -Qdiag-error to make icl error when seeing certain unknown arguments
3052         _flags='-nologo -Qdiag-error:4044,10157'
3053         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3054         # with MSVC which enables it by default.
3055         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3056         if [ $pfx = hostcc ]; then
3057             append _cflags -Dsnprintf=_snprintf
3058         fi
3059     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3060         _type=cparser
3061         _ident=$($_cc --version | head -n1)
3062         _depflags='-MMD'
3063         _cflags_speed='-O4'
3064         _cflags_size='-O2'
3065         _flags_filter=cparser_flags
3066     fi
3067
3068     eval ${pfx}_type=\$_type
3069     eval ${pfx}_ident=\$_ident
3070 }
3071
3072 set_ccvars(){
3073     eval ${1}_C=\${_cc_c-\${${1}_C}}
3074     eval ${1}_E=\${_cc_e-\${${1}_E}}
3075     eval ${1}_O=\${_cc_o-\${${1}_O}}
3076
3077     if [ -n "$_depflags" ]; then
3078         eval ${1}_DEPFLAGS=\$_depflags
3079     else
3080         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3081         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3082         eval DEP${1}FLAGS=\$_flags
3083     fi
3084 }
3085
3086 probe_cc cc "$cc"
3087 cflags_filter=$_flags_filter
3088 cflags_speed=$_cflags_speed
3089 cflags_size=$_cflags_size
3090 cflags_noopt=$_cflags_noopt
3091 add_cflags $_flags $_cflags
3092 cc_ldflags=$_ldflags
3093 set_ccvars CC
3094
3095 probe_cc hostcc "$host_cc"
3096 host_cflags_filter=$_flags_filter
3097 add_host_cflags  $_flags $_cflags
3098 set_ccvars HOSTCC
3099
3100 test -n "$cc_type" && enable $cc_type ||
3101     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3102
3103 : ${as_default:=$cc}
3104 : ${dep_cc_default:=$cc}
3105 : ${ld_default:=$cc}
3106 : ${host_ld_default:=$host_cc}
3107 set_default ar as dep_cc ld host_ld
3108
3109 probe_cc as "$as"
3110 asflags_filter=$_flags_filter
3111 add_asflags $_flags $_cflags
3112 set_ccvars AS
3113
3114 probe_cc ld "$ld"
3115 ldflags_filter=$_flags_filter
3116 add_ldflags $_flags $_ldflags
3117 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3118 LD_O=${_ld_o-$LD_O}
3119 LD_LIB=${_ld_lib-$LD_LIB}
3120 LD_PATH=${_ld_path-$LD_PATH}
3121
3122 probe_cc hostld "$host_ld"
3123 host_ldflags_filter=$_flags_filter
3124 add_host_ldflags $_flags $_ldflags
3125 HOSTLD_O=${_ld_o-$HOSTLD_O}
3126
3127 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3128     probe_cc depcc "$dep_cc"
3129     CCDEP=${_DEPCMD:-$DEPCMD}
3130     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3131     DEPCCFLAGS=$_flags
3132 fi
3133
3134 if $ar 2>&1 | grep -q Microsoft; then
3135     arflags="-nologo"
3136     ar_o='-out:$@'
3137 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3138     arflags="rq"
3139     ar_o='$@'
3140 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3141     arflags='-Xany -r -c'
3142     ar_o='$@'
3143 else
3144     arflags="rc"
3145     ar_o='$@'
3146 fi
3147
3148 add_cflags $extra_cflags
3149 add_cxxflags $extra_cxxflags
3150 add_asflags $extra_cflags
3151
3152 if test -n "$sysroot"; then
3153     case "$cc_type" in
3154         gcc|llvm_gcc|clang)
3155             add_cppflags --sysroot="$sysroot"
3156             add_ldflags --sysroot="$sysroot"
3157         ;;
3158         tms470)
3159             add_cppflags -I"$sysinclude"
3160             add_ldflags  --sysroot="$sysroot"
3161         ;;
3162     esac
3163 fi
3164
3165 if test "$cpu" = host; then
3166     enabled cross_compile &&
3167         die "--cpu=host makes no sense when cross-compiling."
3168
3169     case "$cc_type" in
3170         gcc|llvm_gcc)
3171             check_native(){
3172                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3173                 sed -n "/cc1.*$1=/{
3174                             s/.*$1=\\([^ ]*\\).*/\\1/
3175                             p
3176                             q
3177                         }" $TMPE
3178             }
3179             cpu=$(check_native -march || check_native -mcpu)
3180         ;;
3181     esac
3182
3183     test "${cpu:-host}" = host &&
3184         die "--cpu=host not supported with compiler $cc"
3185 fi
3186
3187 # Deal with common $arch aliases
3188 case "$arch" in
3189     aarch64|arm64)
3190         arch="aarch64"
3191     ;;
3192     arm*|iPad*|iPhone*)
3193         arch="arm"
3194     ;;
3195     mips*|IP*)
3196         arch="mips"
3197     ;;
3198     parisc*|hppa*)
3199         arch="parisc"
3200     ;;
3201     "Power Macintosh"|ppc*|powerpc*)
3202         arch="ppc"
3203     ;;
3204     s390|s390x)
3205         arch="s390"
3206     ;;
3207     sh4|sh)
3208         arch="sh4"
3209     ;;
3210     sun4u|sparc*)
3211         arch="sparc"
3212     ;;
3213     tilegx|tile-gx)
3214         arch="tilegx"
3215     ;;
3216     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3217         arch="x86"
3218     ;;
3219 esac
3220
3221 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3222 enable $arch
3223
3224 # Add processor-specific flags
3225 if enabled aarch64; then
3226
3227     case $cpu in
3228         armv*)
3229             cpuflags="-march=$cpu"
3230         ;;
3231         *)
3232             cpuflags="-mcpu=$cpu"
3233         ;;
3234     esac
3235
3236 elif enabled alpha; then
3237
3238     cpuflags="-mcpu=$cpu"
3239
3240 elif enabled arm; then
3241
3242     check_arm_arch() {
3243         check_cpp_condition stddef.h \
3244             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3245             $cpuflags
3246     }
3247
3248     probe_arm_arch() {
3249         if   check_arm_arch 4;        then echo armv4;
3250         elif check_arm_arch 4T;       then echo armv4t;
3251         elif check_arm_arch 5;        then echo armv5;
3252         elif check_arm_arch 5E;       then echo armv5e;
3253         elif check_arm_arch 5T;       then echo armv5t;
3254         elif check_arm_arch 5TE;      then echo armv5te;
3255         elif check_arm_arch 5TEJ;     then echo armv5te;
3256         elif check_arm_arch 6;        then echo armv6;
3257         elif check_arm_arch 6J;       then echo armv6j;
3258         elif check_arm_arch 6K;       then echo armv6k;
3259         elif check_arm_arch 6Z;       then echo armv6z;
3260         elif check_arm_arch 6ZK;      then echo armv6zk;
3261         elif check_arm_arch 6T2;      then echo armv6t2;
3262         elif check_arm_arch 7;        then echo armv7;
3263         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3264         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3265         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3266         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3267         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3268         fi
3269     }
3270
3271     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3272
3273     case $cpu in
3274         armv*)
3275             cpuflags="-march=$cpu"
3276             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3277         ;;
3278         *)
3279             cpuflags="-mcpu=$cpu"
3280             case $cpu in
3281                 cortex-a*)                               subarch=armv7a  ;;
3282                 cortex-r*)                               subarch=armv7r  ;;
3283                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3284                 arm11*)                                  subarch=armv6   ;;
3285                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3286                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3287                 *)                             subarch=$(probe_arm_arch) ;;
3288             esac
3289         ;;
3290     esac
3291
3292     case "$subarch" in
3293         armv5t*)    enable fast_clz                ;;
3294         armv[6-8]*) enable fast_clz fast_unaligned ;;
3295     esac
3296
3297 elif enabled avr32; then
3298
3299     case $cpu in
3300         ap7[02]0[0-2])
3301             subarch="avr32_ap"
3302             cpuflags="-mpart=$cpu"
3303         ;;
3304         ap)
3305             subarch="avr32_ap"
3306             cpuflags="-march=$cpu"
3307         ;;
3308         uc3[ab]*)
3309             subarch="avr32_uc"
3310             cpuflags="-mcpu=$cpu"
3311         ;;
3312         uc)
3313             subarch="avr32_uc"
3314             cpuflags="-march=$cpu"
3315         ;;
3316     esac
3317
3318 elif enabled bfin; then
3319
3320     cpuflags="-mcpu=$cpu"
3321
3322 elif enabled mips; then
3323
3324     cpuflags="-march=$cpu"
3325
3326     case $cpu in
3327         24kc)
3328             disable mipsfpu
3329             disable mipsdspr1
3330             disable mipsdspr2
3331         ;;
3332         24kf*)
3333             disable mipsdspr1
3334             disable mipsdspr2
3335         ;;
3336         24kec|34kc|1004kc)
3337             disable mipsfpu
3338             disable mipsdspr2
3339         ;;
3340         24kef*|34kf*|1004kf*)
3341             disable mipsdspr2
3342         ;;
3343         74kc)
3344             disable mipsfpu
3345         ;;
3346     esac
3347
3348 elif enabled ppc; then
3349
3350     case $(tolower $cpu) in
3351         601|ppc601|powerpc601)
3352             cpuflags="-mcpu=601"
3353             disable altivec
3354         ;;
3355         603*|ppc603*|powerpc603*)
3356             cpuflags="-mcpu=603"
3357             disable altivec
3358         ;;
3359         604*|ppc604*|powerpc604*)
3360             cpuflags="-mcpu=604"
3361             disable altivec
3362         ;;
3363         g3|75*|ppc75*|powerpc75*)
3364             cpuflags="-mcpu=750"
3365             disable altivec
3366         ;;
3367         g4|745*|ppc745*|powerpc745*)
3368             cpuflags="-mcpu=7450"
3369         ;;
3370         74*|ppc74*|powerpc74*)
3371             cpuflags="-mcpu=7400"
3372         ;;
3373         g5|970|ppc970|powerpc970)
3374             cpuflags="-mcpu=970"
3375         ;;
3376         power[3-7]*)
3377             cpuflags="-mcpu=$cpu"
3378         ;;
3379         cell)
3380             cpuflags="-mcpu=cell"
3381             enable ldbrx
3382         ;;
3383         e500mc)
3384             cpuflags="-mcpu=e500mc"
3385             disable altivec
3386         ;;
3387         e500v2)
3388             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3389             disable altivec
3390         ;;
3391         e500)
3392             cpuflags="-mcpu=8540 -mhard-float"
3393             disable altivec
3394         ;;
3395     esac
3396
3397 elif enabled sparc; then
3398
3399     case $cpu in
3400         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3401             cpuflags="-mcpu=$cpu"
3402             disable vis
3403         ;;
3404         ultrasparc*|niagara[234])
3405             cpuflags="-mcpu=$cpu"
3406         ;;
3407     esac
3408
3409 elif enabled x86; then
3410
3411     case $cpu in
3412         i[345]86|pentium)
3413             cpuflags="-march=$cpu"
3414             disable mmx
3415         ;;
3416         # targets that do NOT support nopl and conditional mov (cmov)
3417         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3418             cpuflags="-march=$cpu"
3419             disable i686
3420         ;;
3421         # targets that do support nopl and conditional mov (cmov)
3422         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3423             cpuflags="-march=$cpu"
3424             enable i686
3425             enable fast_cmov
3426         ;;
3427         # targets that do support conditional mov but on which it's slow
3428         pentium4|pentium4m|prescott|nocona)
3429             cpuflags="-march=$cpu"
3430             enable i686
3431             disable fast_cmov
3432         ;;
3433     esac
3434
3435 fi
3436
3437 if [ "$cpu" != generic ]; then
3438     add_cflags  $cpuflags
3439     add_asflags $cpuflags
3440 fi
3441
3442 # compiler sanity check
3443 check_exec <<EOF
3444 int main(void){ return 0; }
3445 EOF
3446 if test "$?" != 0; then
3447     echo "$cc is unable to create an executable file."
3448     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3449         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3450         echo "Only do this if you know what cross compiling means."
3451     fi
3452     die "C compiler test failed."
3453 fi
3454
3455 add_cppflags -D_ISOC99_SOURCE
3456 add_cxxflags -D__STDC_CONSTANT_MACROS
3457 check_cflags -std=c99
3458 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3459 #include <stdlib.h>
3460 EOF
3461 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3462 #include <stdlib.h>
3463 EOF
3464
3465 check_host_cflags -std=c99
3466 check_host_cflags -Wall
3467
3468 check_64bit(){
3469     arch32=$1
3470     arch64=$2
3471     expr=$3
3472     check_code cc "" "int test[2*($expr) - 1]" &&
3473         subarch=$arch64 || subarch=$arch32
3474 }
3475
3476 case "$arch" in
3477     aarch64|alpha|ia64)
3478         spic=$shared
3479     ;;
3480     mips)
3481         check_64bit mips mips64 '_MIPS_SIM > 1'
3482         spic=$shared
3483     ;;
3484     parisc)
3485         check_64bit parisc parisc64 'sizeof(void *) > 4'
3486         spic=$shared
3487     ;;
3488     ppc)
3489         check_64bit ppc ppc64 'sizeof(void *) > 4'
3490         spic=$shared
3491     ;;
3492     sparc)
3493         check_64bit sparc sparc64 'sizeof(void *) > 4'
3494         spic=$shared
3495     ;;
3496     x86)
3497         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3498         if test "$subarch" = "x86_64"; then
3499             spic=$shared
3500         fi
3501     ;;
3502     ppc)
3503         check_cc <<EOF && subarch="ppc64"
3504         int test[(int)sizeof(char*) - 7];
3505 EOF
3506     ;;
3507 esac
3508
3509 enable $subarch
3510 enabled spic && enable_weak pic
3511
3512 # OS specific
3513 case $target_os in
3514     aix)
3515         SHFLAGS=-shared
3516         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3517         enabled shared && add_ldflags -Wl,-brtl
3518         ;;
3519     haiku)
3520         prefix_default="/boot/common"
3521         network_extralibs="-lnetwork"
3522         host_libs=
3523         ;;
3524     sunos)
3525         SHFLAGS='-shared -Wl,-h,$$(@F)'
3526         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3527         network_extralibs="-lsocket -lnsl"
3528         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3529         # When using suncc to build, the Solaris linker will mark
3530         # an executable with each instruction set encountered by
3531         # the Solaris assembler.  As our libraries contain their own
3532         # guards for processor-specific code, instead suppress
3533         # generation of the HWCAPS ELF section on Solaris x86 only.
3534         enabled_all suncc x86 &&
3535             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3536             add_ldflags -Wl,-M,mapfile
3537         nm_default='nm -P -g'
3538         ;;
3539     netbsd)
3540         disable symver
3541         oss_indev_extralibs="-lossaudio"
3542         oss_outdev_extralibs="-lossaudio"
3543         enabled gcc || check_ldflags -Wl,-zmuldefs
3544         ;;
3545     openbsd|bitrig)
3546         disable symver
3547         SHFLAGS='-shared'
3548         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3549         SLIB_INSTALL_LINKS=
3550         oss_indev_extralibs="-lossaudio"
3551         oss_outdev_extralibs="-lossaudio"
3552         ;;
3553     dragonfly)
3554         disable symver
3555         ;;
3556     freebsd)
3557         ;;
3558     bsd/os)
3559         add_extralibs -lpoll -lgnugetopt
3560         strip="strip -d"
3561         ;;
3562     darwin)
3563         gas="gas-preprocessor.pl $cc"
3564         enabled ppc && add_asflags -force_cpusubtype_ALL
3565         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3566         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3567         strip="${strip} -x"
3568         add_ldflags -Wl,-dynamic,-search_paths_first
3569         SLIBSUF=".dylib"
3570         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3571         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3572         objformat="macho"
3573         enabled x86_64 && objformat="macho64"
3574         enabled_any pic shared ||
3575             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3576         ;;
3577     mingw32*)
3578         if test $target_os = "mingw32ce"; then
3579             disable network
3580         else
3581             target_os=mingw32
3582         fi
3583         LIBTARGET=i386
3584         if enabled x86_64; then
3585             LIBTARGET="i386:x86-64"
3586         elif enabled arm; then
3587             LIBTARGET=arm-wince
3588         fi
3589         check_ldflags -Wl,--nxcompat
3590         check_ldflags -Wl,--dynamicbase
3591         shlibdir_default="$bindir_default"
3592         SLIBPREF=""
3593         SLIBSUF=".dll"
3594         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3595         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3596         dlltool="${cross_prefix}dlltool"
3597         if check_cmd lib.exe -list; then
3598             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3599             if enabled x86_64; then
3600                 LIBTARGET=x64
3601             fi
3602         elif check_cmd $dlltool --version; then
3603             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3604         fi
3605         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3606         SLIB_INSTALL_LINKS=
3607         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3608         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3609         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3610         objformat="win32"
3611         ranlib=:
3612         enable dos_paths
3613         ;;
3614     win32|win64)
3615         if enabled shared; then
3616             # Link to the import library instead of the normal static library
3617             # for shared libs.
3618             LD_LIB='%.lib'
3619             # Cannot build both shared and static libs with MSVC or icl.
3620             disable static
3621         fi
3622         shlibdir_default="$bindir_default"
3623         SLIBPREF=""
3624         SLIBSUF=".dll"
3625         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3626         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3627         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3628         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3629         SLIB_INSTALL_LINKS=
3630         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3631         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3632         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3633         objformat="win32"
3634         ranlib=:
3635         enable dos_paths
3636         ;;
3637     cygwin*)
3638         target_os=cygwin
3639         shlibdir_default="$bindir_default"
3640         SLIBPREF="cyg"
3641         SLIBSUF=".dll"
3642         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3643         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3644         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3645         SLIB_INSTALL_LINKS=
3646         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3647         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3648         objformat="win32"
3649         enable dos_paths
3650         ;;
3651     *-dos|freedos|opendos)
3652         network_extralibs="-lsocket"
3653         objformat="coff"
3654         enable dos_paths
3655         add_cppflags -U__STRICT_ANSI__
3656         ;;
3657     linux)
3658         enable dv1394
3659         ;;
3660     irix*)
3661         target_os=irix
3662         ranlib="echo ignoring ranlib"
3663         ;;
3664     os/2*)
3665         strip="lxlite -CS"
3666         ln_s="cp -f"
3667         objformat="aout"
3668         add_cppflags -D_GNU_SOURCE
3669         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3670         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3671         LIBSUF="_s.a"
3672         SLIBPREF=""
3673         SLIBSUF=".dll"
3674         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3675         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3676         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3677             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3678             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3679             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3680             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3681             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3682         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3683             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3684         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3685         enable dos_paths
3686         enable_weak os2threads
3687         ;;
3688     gnu/kfreebsd)
3689         add_cppflags -D_BSD_SOURCE
3690         ;;
3691     gnu)
3692         ;;
3693     qnx)
3694         add_cppflags -D_QNX_SOURCE
3695         network_extralibs="-lsocket"
3696         ;;
3697     symbian)
3698         SLIBSUF=".dll"
3699         enable dos_paths
3700         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3701         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3702         add_ldflags -Wl,--target1-abs,--no-undefined \
3703                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3704                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3705         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3706                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3707                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3708         ;;
3709     osf1)
3710         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3711         ;;
3712     minix)
3713         ;;
3714     plan9)
3715         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3716                      -D_REENTRANT_SOURCE        \
3717                      -D_RESEARCH_SOURCE         \
3718                      -DFD_SETSIZE=96            \
3719                      -DHAVE_SOCK_OPTS
3720         add_compat strtod.o strtod=avpriv_strtod
3721         network_extralibs='-lbsd'
3722         exeobjs=compat/plan9/main.o
3723         disable ffserver
3724         cp_f='cp'
3725         ;;
3726     none)
3727         ;;
3728     *)
3729         die "Unknown OS '$target_os'."
3730         ;;
3731 esac
3732
3733 # determine libc flavour
3734
3735 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3736 if check_cpp_condition features.h "defined __UCLIBC__"; then
3737     libc_type=uclibc
3738     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3739 elif check_cpp_condition features.h "defined __GLIBC__"; then
3740     libc_type=glibc
3741     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3742 # MinGW headers can be installed on Cygwin, so check for newlib first.
3743 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3744     libc_type=newlib
3745     add_cppflags -U__STRICT_ANSI__
3746 elif check_header _mingw.h; then
3747     libc_type=mingw
3748     check_cpp_condition _mingw.h \
3749         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3750             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3751         die "ERROR: MinGW runtime version must be >= 3.15."
3752     add_cppflags -U__STRICT_ANSI__
3753     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3754             __MINGW64_VERSION_MAJOR < 3"; then
3755         add_compat msvcrt/snprintf.o
3756         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3757     else
3758         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3759     fi
3760 elif check_func_headers stdlib.h _get_doserrno; then
3761     libc_type=msvcrt
3762     add_compat strtod.o strtod=avpriv_strtod
3763     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3764                                  _snprintf=avpriv_snprintf  \
3765                                  vsnprintf=avpriv_vsnprintf
3766     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3767     # 0x601 by default unless something else is set by the user.
3768     # This can easily lead to us detecting functions only present
3769     # in such new versions and producing binaries requiring windows 7.0.
3770     # Therefore explicitly set the default to XP unless the user has
3771     # set something else on the command line.
3772     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3773 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3774     libc_type=klibc
3775 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3776     libc_type=bionic
3777     add_compat strtod.o strtod=avpriv_strtod
3778 fi
3779
3780 test -n "$libc_type" && enable $libc_type
3781
3782 # hacks for compiler/libc/os combinations
3783
3784 if enabled_all tms470 glibc; then
3785     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3786     add_cppflags -D__USER_LABEL_PREFIX__=
3787     add_cppflags -D__builtin_memset=memset
3788     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3789     add_cflags   -pds=48    # incompatible redefinition of macro
3790 fi
3791
3792 if enabled_all ccc glibc; then
3793     add_ldflags -Wl,-z,now  # calls to libots crash without this
3794 fi
3795
3796 esc(){
3797     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3798 }
3799
3800 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3801
3802 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3803
3804 set_default $PATHS_LIST
3805 set_default nm
3806
3807 # we need to build at least one lib type
3808 if ! enabled_any static shared; then
3809     cat <<EOF
3810 At least one library type must be built.
3811 Specify --enable-static to build the static libraries or --enable-shared to
3812 build the shared libraries as well. To only build the shared libraries specify
3813 --disable-static in addition to --enable-shared.
3814 EOF
3815     exit 1;
3816 fi
3817
3818 # backward compatibility layer for incompatible_libav/fork_abi
3819 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3820 enabled incompatible_libav_abi && enable incompatible_fork_abi
3821
3822 die_license_disabled() {
3823     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3824 }
3825
3826 die_license_disabled_gpl() {
3827     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3828 }
3829
3830 die_license_disabled gpl frei0r
3831 die_license_disabled gpl libcdio
3832 die_license_disabled gpl libutvideo
3833 die_license_disabled gpl libvidstab
3834 die_license_disabled gpl libx264
3835 die_license_disabled gpl libxavs
3836 die_license_disabled gpl libxvid
3837 die_license_disabled gpl libzvbi
3838 die_license_disabled gpl x11grab
3839
3840 die_license_disabled nonfree libaacplus
3841 die_license_disabled nonfree libfaac
3842 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3843 enabled gpl && die_license_disabled_gpl nonfree openssl
3844
3845 die_license_disabled version3 libopencore_amrnb
3846 die_license_disabled version3 libopencore_amrwb
3847 die_license_disabled version3 libvo_aacenc
3848 die_license_disabled version3 libvo_amrwbenc
3849
3850 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3851
3852 disabled optimizations || check_cflags -fomit-frame-pointer
3853
3854 enable_weak_pic() {
3855     disabled pic && return
3856     enable pic
3857     add_cppflags -DPIC
3858     case "$target_os" in
3859     mingw*|cygwin*)
3860         ;;
3861     *)
3862         add_cflags -fPIC
3863         ;;
3864     esac
3865     add_asflags  -fPIC
3866 }
3867
3868 enabled pic && enable_weak_pic
3869
3870 check_cc <<EOF || die "Symbol mangling check failed."
3871 int ff_extern;
3872 EOF
3873 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3874 extern_prefix=${sym%%ff_extern*}
3875
3876 check_cc <<EOF && enable_weak inline_asm
3877 void foo(void) { __asm__ volatile ("" ::); }
3878 EOF
3879
3880 _restrict=
3881 for restrict_keyword in restrict __restrict__ __restrict; do
3882     check_cc <<EOF && _restrict=$restrict_keyword && break
3883 void foo(char * $restrict_keyword p);
3884 EOF
3885 done
3886
3887 check_cc <<EOF && enable pragma_deprecated
3888 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3889 EOF
3890
3891 check_cc <<EOF && enable attribute_packed
3892 struct { int x; } __attribute__((packed)) x;
3893 EOF
3894
3895 check_cc <<EOF && enable attribute_may_alias
3896 union { int x; } __attribute__((may_alias)) x;
3897 EOF
3898
3899 check_cc <<EOF || die "endian test failed"
3900 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3901 EOF
3902 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3903
3904 check_inline_asm inline_asm_labels '"1:\n"'
3905
3906 if enabled alpha; then
3907
3908     check_cflags -mieee
3909
3910 elif enabled arm; then
3911
3912     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3913 float func(float a, float b){ return a+b; }
3914 EOF
3915
3916     enabled thumb && check_cflags -mthumb || check_cflags -marm
3917     nogas=die
3918
3919     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3920         enable vfp_args
3921     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3922         case "${cross_prefix:-$cc}" in
3923             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3924             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3925 __asm__ (".eabi_attribute 28, 1");
3926 int main(void) { return 0; }
3927 EOF
3928         esac
3929         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3930     fi
3931
3932     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3933     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3934     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3935     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3936     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3937     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3938
3939     [ $target_os = linux ] ||
3940         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3941             $ARCH_EXT_LIST_ARM
3942
3943     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3944     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3945
3946     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3947
3948 elif enabled mips; then
3949
3950     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3951     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3952      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3953     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3954      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3955     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3956      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3957     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3958      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3959
3960 elif enabled parisc; then
3961
3962     if enabled gcc; then
3963         case $($cc -dumpversion) in
3964             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3965         esac
3966     fi
3967
3968 elif enabled ppc; then
3969
3970     enable local_aligned_8 local_aligned_16
3971
3972     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3973     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3974     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3975     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3976
3977     # AltiVec flags: The FSF version of GCC differs from the Apple version
3978     if enabled altivec; then
3979         if ! enabled_any pic ppc64; then
3980             nogas=warn
3981         fi
3982         check_cflags -maltivec -mabi=altivec &&
3983         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3984         check_cflags -faltivec
3985
3986         # check if our compiler supports Motorola AltiVec C API
3987         check_cc <<EOF || disable altivec
3988 $inc_altivec_h
3989 int main(void) {
3990     vector signed int v1 = (vector signed int) { 0 };
3991     vector signed int v2 = (vector signed int) { 1 };
3992     v1 = vec_add(v1, v2);
3993     return 0;
3994 }
3995 EOF
3996
3997         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3998     fi
3999
4000 elif enabled sparc; then
4001
4002     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4003
4004 elif enabled x86; then
4005
4006     check_builtin rdtsc    intrin.h   "__rdtsc()"
4007     check_builtin mm_empty mmintrin.h "_mm_empty()"
4008
4009     enable local_aligned_8 local_aligned_16
4010
4011     # check whether EBP is available on x86
4012     # As 'i' is stored on the stack, this program will crash
4013     # if the base pointer is used to access it because the
4014     # base pointer is cleared in the inline assembly code.
4015     check_exec_crash <<EOF && enable ebp_available
4016 volatile int i=0;
4017 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4018 return i;
4019 EOF
4020
4021     # check whether EBX is available on x86
4022     check_inline_asm ebx_available '""::"b"(0)' &&
4023         check_inline_asm ebx_available '"":::"%ebx"'
4024
4025     # check whether xmm clobbers are supported
4026     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4027
4028     # check whether binutils is new enough to compile SSSE3/MMXEXT
4029     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4030     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4031
4032     if ! disabled_any asm mmx yasm; then
4033         if check_cmd $yasmexe --version; then
4034             enabled x86_64 && yasm_extra="-m amd64"
4035             yasm_debug="-g dwarf2"
4036         elif check_cmd nasm -v; then
4037             yasmexe=nasm
4038             yasm_debug="-g -F dwarf"
4039             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4040         fi
4041
4042         YASMFLAGS="-f $objformat $yasm_extra"
4043         enabled pic               && append YASMFLAGS "-DPIC"
4044         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4045         case "$objformat" in
4046             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4047         esac
4048
4049         check_yasm "movbe ecx, [5]" && enable yasm ||
4050             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4051         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4052         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4053         check_yasm "CPU amdnop" && enable cpunop
4054     fi
4055
4056     case "$cpu" in
4057         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4058             disable fast_clz
4059         ;;
4060     esac
4061
4062 fi
4063
4064 if enabled asm; then
4065     as=${gas:=$as}
4066     check_as <<EOF && enable gnu_as || \
4067         $nogas "GNU assembler not found, install gas-preprocessor"
4068 .macro m n
4069 \n: .int 0
4070 .endm
4071 m x
4072 EOF
4073 fi
4074
4075 check_ldflags -Wl,--as-needed
4076
4077 if check_func dlopen; then
4078     ldl=
4079 elif check_func dlopen -ldl; then
4080     ldl=-ldl
4081 fi
4082
4083 if ! disabled network; then
4084     check_type "sys/types.h sys/socket.h" socklen_t
4085     check_type netdb.h "struct addrinfo"
4086     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4087     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4088     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4089     check_type netinet/in.h "struct sockaddr_in6"
4090     check_type poll.h "struct pollfd"
4091     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4092     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4093     check_type netinet/sctp.h "struct sctp_event_subscribe"
4094     check_func getaddrinfo $network_extralibs
4095     check_func getservbyport $network_extralibs
4096     # Prefer arpa/inet.h over winsock2
4097     if check_header arpa/inet.h ; then
4098         check_func closesocket
4099     elif check_header winsock2.h ; then
4100         check_func_headers winsock2.h closesocket -lws2 &&
4101             network_extralibs="-lws2" ||
4102         { check_func_headers winsock2.h closesocket -lws2_32 &&
4103             network_extralibs="-lws2_32"; }
4104         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4105         check_type ws2tcpip.h socklen_t
4106         check_type ws2tcpip.h "struct addrinfo"
4107         check_type ws2tcpip.h "struct group_source_req"
4108         check_type ws2tcpip.h "struct ip_mreq_source"
4109         check_type ws2tcpip.h "struct ipv6_mreq"
4110         check_type winsock2.h "struct pollfd"
4111         check_type ws2tcpip.h "struct sockaddr_in6"
4112         check_type ws2tcpip.h "struct sockaddr_storage"
4113         check_struct winsock2.h "struct sockaddr" sa_len
4114     else
4115         disable network
4116     fi
4117 fi
4118
4119 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4120 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4121
4122 check_func  access
4123 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4124 check_func  fcntl
4125 check_func  fork
4126 check_func_headers stdlib.h getenv
4127 check_func  gethrtime
4128 check_func  getopt
4129 check_func  getrusage
4130 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4131 check_func  gettimeofday
4132 check_func  inet_aton $network_extralibs
4133 check_func  isatty
4134 check_func  localtime_r
4135 check_func  ${malloc_prefix}memalign            && enable memalign
4136 check_func  mkstemp
4137 check_func  mmap
4138 check_func  mprotect
4139 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4140 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4141 check_func  setrlimit
4142 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4143 check_func  strerror_r
4144 check_func  sched_getaffinity
4145 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4146 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4147 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4148 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4149 check_builtin sarestart signal.h "SA_RESTART"
4150 check_func  sysconf
4151 check_func  sysctl
4152 check_func  usleep
4153 check_func_headers conio.h kbhit
4154 check_func_headers windows.h PeekNamedPipe
4155 check_func_headers io.h setmode
4156 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4157 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4158 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4159 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4160 check_func_headers windows.h GetProcessAffinityMask
4161 check_func_headers windows.h GetProcessTimes
4162 check_func_headers windows.h GetSystemTimeAsFileTime
4163 check_func_headers windows.h MapViewOfFile
4164 check_func_headers windows.h SetConsoleTextAttribute
4165 check_func_headers windows.h Sleep
4166 check_func_headers windows.h VirtualAlloc
4167 check_func_headers glob.h glob
4168 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4169
4170 check_header cl/cl.h
4171 check_header direct.h
4172 check_header dlfcn.h
4173 check_header dxva.h
4174 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4175 check_header io.h
4176 check_header libcrystalhd/libcrystalhd_if.h
4177 check_header malloc.h
4178 check_header poll.h
4179 check_header sys/mman.h
4180 check_header sys/param.h
4181 check_header sys/resource.h
4182 check_header sys/select.h
4183 check_header sys/time.h
4184 check_header sys/un.h
4185 check_header termios.h
4186 check_header unistd.h
4187 check_header vdpau/vdpau.h
4188 check_header vdpau/vdpau_x11.h
4189 check_header VideoDecodeAcceleration/VDADecoder.h
4190 check_header windows.h
4191 check_header X11/extensions/XvMClib.h
4192 check_header asm/types.h
4193
4194 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4195 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4196
4197 if ! disabled w32threads && ! enabled pthreads; then
4198     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4199 fi
4200
4201 # check for some common methods of building with pthread support
4202 # do this before the optional library checks as some of them require pthreads
4203 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4204     enable pthreads
4205     if check_func pthread_create; then
4206         :
4207     elif check_func pthread_create -pthread; then
4208         add_cflags -pthread
4209         add_extralibs -pthread
4210     elif check_func pthread_create -pthreads; then
4211         add_cflags -pthreads
4212         add_extralibs -pthreads
4213     elif check_func pthread_create -lpthreadGC2; then
4214         add_extralibs -lpthreadGC2
4215     elif ! check_lib pthread.h pthread_create -lpthread; then
4216         disable pthreads
4217     fi
4218 fi
4219
4220 for thread in $THREADS_LIST; do
4221     if enabled $thread; then
4222         test -n "$thread_type" &&
4223             die "ERROR: Only one thread type must be selected." ||
4224             thread_type="$thread"
4225     fi
4226 done
4227
4228 if enabled pthreads; then
4229   check_func pthread_cancel
4230 fi
4231
4232 enabled sync_val_compare_and_swap && enable atomics_gcc
4233 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4234 enabled MemoryBarrier && enable atomics_win32
4235
4236 check_lib math.h sin -lm && LIBM="-lm"
4237 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4238
4239 atan2f_args=2
4240 ldexpf_args=2
4241 powf_args=2
4242
4243 for func in $MATH_FUNCS; do
4244     eval check_mathfunc $func \${${func}_args:-1}
4245 done
4246
4247 # these are off by default, so fail if requested and not available
4248 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4249                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4250                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4251 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4252 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4253 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4254 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4255 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4256 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4257 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4258 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4259 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4260                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4261                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4262 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4263 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4264 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4265 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"
4266 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4267 enabled libfreetype       && require_libfreetype
4268 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4269 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4270                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4271                                done || die "ERROR: libgsm not found"; }
4272 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4273 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4274 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4275 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4276 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4277 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4278 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4279 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4280                                check_lib openjpeg.h opj_version -lopenjpeg ||
4281                                die "ERROR: libopenjpeg not found"; }
4282 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4283 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4284 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4285 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4286 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4287 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4288 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4289 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4290 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4291 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4292     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4293     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4294 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4295 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4296                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4297                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4298 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4299 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4300 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4301 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4302 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4303 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4304 enabled libvpx            && {
4305     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4306                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4307     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 ||
4308                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4309     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4310     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4311 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4312 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4313                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4314                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4315 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4316 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4317 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4318 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4319 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4320                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4321                                die "ERROR: openal not found"; } &&
4322                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4323                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4324 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4325                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4326                                die "ERROR: opencl not found"; } &&
4327                              { ! enabled_any w32threads os2threads ||
4328                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4329                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4330                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4331                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4332 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4333                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4334                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4335                                die "ERROR: openssl not found"; }
4336
4337 if enabled gnutls; then
4338     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4339     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4340 fi
4341
4342 # libdc1394 check
4343 if enabled libdc1394; then
4344     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4345         enable libdc1394_2; } ||
4346     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4347         enable libdc1394_1; } ||
4348     die "ERROR: No version of libdc1394 found "
4349 fi
4350
4351 SDL_CONFIG="${cross_prefix}sdl-config"
4352 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4353     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4354     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4355     enable sdl
4356 else
4357   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4358     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4359     sdl_libs=$("${SDL_CONFIG}" --libs)
4360     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4361     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4362     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4363     enable sdl
4364   fi
4365 fi
4366 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4367
4368 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4369 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4370 perl --version > /dev/null 2>&1 && enable perl || disable perl
4371 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4372 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4373
4374 check_header linux/fb.h
4375 check_header linux/videodev.h
4376 check_header linux/videodev2.h
4377 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4378
4379 check_header sys/videoio.h
4380
4381 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4382 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4383 # w32api 3.12 had it defined wrong
4384 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4385
4386 check_type "dshow.h" IBaseFilter
4387
4388 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4389 { check_header dev/bktr/ioctl_meteor.h &&
4390   check_header dev/bktr/ioctl_bt848.h; } ||
4391 { check_header machine/ioctl_meteor.h &&
4392   check_header machine/ioctl_bt848.h; } ||
4393 { check_header dev/video/meteor/ioctl_meteor.h &&
4394   check_header dev/video/bktr/ioctl_bt848.h; } ||
4395 check_header dev/ic/bt8xx.h
4396
4397 check_header sndio.h
4398 if check_struct sys/soundcard.h audio_buf_info bytes; then
4399     enable_safe sys/soundcard.h
4400 else
4401     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4402     #include <sys/soundcard.h>
4403     audio_buf_info abc;
4404 EOF
4405 fi
4406 check_header soundcard.h
4407
4408 enabled_any alsa_indev alsa_outdev &&
4409     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4410
4411 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4412     check_func jack_port_get_latency_range -ljack
4413
4414 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4415
4416 if enabled libcdio; then
4417     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4418     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4419     die "ERROR: libcdio-paranoia not found"
4420 fi
4421
4422 enabled x11grab                                           &&
4423 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4424 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4425 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4426
4427 enabled vaapi &&
4428     check_lib va/va.h vaInitialize -lva ||
4429     disable vaapi
4430
4431 enabled vdpau &&
4432     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4433     disable vdpau
4434
4435 # Funny iconv installations are not unusual, so check it after all flags have been set
4436 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4437
4438 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4439
4440 # add some useful compiler flags if supported
4441 check_cflags -Wdeclaration-after-statement
4442 check_cflags -Wall
4443 check_cflags -Wno-parentheses
4444 check_cflags -Wno-switch
4445 check_cflags -Wno-format-zero-length
4446 check_cflags -Wdisabled-optimization
4447 check_cflags -Wpointer-arith
4448 check_cflags -Wredundant-decls
4449 check_cflags -Wno-pointer-sign
4450 check_cflags -Wwrite-strings
4451 check_cflags -Wtype-limits
4452 check_cflags -Wundef
4453 check_cflags -Wmissing-prototypes
4454 check_cflags -Wno-pointer-to-int-cast
4455 check_cflags -Wstrict-prototypes
4456 enabled extra_warnings && check_cflags -Winline
4457
4458 # add some linker flags
4459 check_ldflags -Wl,--warn-common
4460 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4461 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4462
4463 enabled xmm_clobber_test &&
4464     check_ldflags -Wl,--wrap,avcodec_open2              \
4465                   -Wl,--wrap,avcodec_decode_audio4      \
4466                   -Wl,--wrap,avcodec_decode_video2      \
4467                   -Wl,--wrap,avcodec_decode_subtitle2   \
4468                   -Wl,--wrap,avcodec_encode_audio2      \
4469                   -Wl,--wrap,avcodec_encode_video       \
4470                   -Wl,--wrap,avcodec_encode_video2      \
4471                   -Wl,--wrap,avcodec_encode_subtitle    \
4472                   -Wl,--wrap,sws_scale ||
4473     disable xmm_clobber_test
4474
4475 echo "X{};" > $TMPV
4476 if test_ldflags -Wl,--version-script,$TMPV; then
4477     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4478     check_cc <<EOF && enable symver_asm_label
4479 void ff_foo(void) __asm__ ("av_foo@VERSION");
4480 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4481 EOF
4482     check_cc <<EOF && enable symver_gnu_asm
4483 __asm__(".symver ff_foo,av_foo@VERSION");
4484 void ff_foo(void) {}
4485 EOF
4486 fi
4487
4488 if [ -z "$optflags" ]; then
4489     if enabled small; then
4490         optflags=$cflags_size
4491     elif enabled optimizations; then
4492         optflags=$cflags_speed
4493     else
4494         optflags=$cflags_noopt
4495     fi
4496 fi
4497
4498 check_optflags(){
4499     check_cflags "$@"
4500     enabled lto && check_ldflags "$@"
4501 }
4502
4503
4504 if enabled lto; then
4505     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4506     check_cflags  -flto
4507     check_ldflags -flto $cpuflags
4508 fi
4509
4510 check_optflags $optflags
4511 check_optflags -fno-math-errno
4512 check_optflags -fno-signed-zeros
4513
4514 enabled ftrapv && check_cflags -ftrapv
4515
4516 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4517 int x;
4518 EOF
4519
4520
4521 if enabled icc; then
4522     # Just warnings, no remarks
4523     check_cflags -w1
4524     # -wd: Disable following warnings
4525     # 144, 167, 556: -Wno-pointer-sign
4526     # 188: enumerated type mixed with another type
4527     # 1292: attribute "foo" ignored
4528     # 1419: external declaration in primary source file
4529     # 10006: ignoring unknown option -fno-signed-zeros
4530     # 10148: ignoring unknown option -Wno-parentheses
4531     # 10156: ignoring option '-W'; no argument required
4532     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4533     # 11030: Warning unknown option --as-needed
4534     # 10156: ignoring option '-export'; no argument required
4535     check_ldflags -wd10156,11030
4536     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4537     enable ebp_available
4538     if enabled x86_32; then
4539         icc_version=$($cc -dumpversion)
4540         test ${icc_version%%.*} -ge 11 &&
4541             check_cflags -falign-stack=maintain-16-byte ||
4542             disable aligned_stack
4543     fi
4544 elif enabled ccc; then
4545     # disable some annoying warnings
4546     add_cflags -msg_disable bitnotint
4547     add_cflags -msg_disable mixfuncvoid
4548     add_cflags -msg_disable nonstandcast
4549     add_cflags -msg_disable unsupieee
4550 elif enabled gcc; then
4551     check_optflags -fno-tree-vectorize
4552     check_cflags -Werror=implicit-function-declaration
4553     check_cflags -Werror=missing-prototypes
4554     check_cflags -Werror=return-type
4555     check_cflags -Werror=vla
4556 elif enabled llvm_gcc; then
4557     check_cflags -mllvm -stack-alignment=16
4558 elif enabled clang; then
4559     check_cflags -mllvm -stack-alignment=16
4560     check_cflags -Qunused-arguments
4561     check_cflags -Werror=implicit-function-declaration
4562     check_cflags -Werror=missing-prototypes
4563     check_cflags -Werror=return-type
4564 elif enabled cparser; then
4565     add_cflags -Wno-missing-variable-declarations
4566     add_cflags -Wno-empty-statement
4567 elif enabled armcc; then
4568     # 2523: use of inline assembler is deprecated
4569     add_cflags -W${armcc_opt},--diag_suppress=2523
4570     add_cflags -W${armcc_opt},--diag_suppress=1207
4571     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4572     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4573     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4574     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4575 elif enabled tms470; then
4576     add_cflags -pds=824 -pds=837
4577 elif enabled pathscale; then
4578     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4579 elif enabled_any msvc icl; then
4580     enabled x86_32 && disable aligned_stack
4581     enabled_all x86_32 debug && add_cflags -Oy-
4582     enabled debug && add_ldflags -debug
4583     enable pragma_deprecated
4584     if enabled icl; then
4585         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4586         # (correctly) on icl 13.x.
4587         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4588             add_cflags -Qansi-alias
4589         # icl will pass the inline asm tests but inline asm is currently
4590         # not supported (build will fail)
4591         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4592         disable inline_asm
4593     fi
4594 fi
4595
4596 case $target_os in
4597     osf1)
4598         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4599     ;;
4600     plan9)
4601         add_cppflags -Dmain=plan9_main
4602     ;;
4603 esac
4604
4605 enable frame_thread_encoder
4606 enabled_any $THREADS_LIST      && enable threads
4607 enabled_any $ATOMICS_LIST      && enable atomics_native
4608
4609 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"
4610
4611 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4612
4613 check_deps $CONFIG_LIST       \
4614            $CONFIG_EXTRA      \
4615            $HAVE_LIST         \
4616            $ALL_COMPONENTS    \
4617
4618
4619 if test $target_os = "haiku"; then
4620     disable memalign
4621     disable posix_memalign
4622 fi
4623
4624 ! enabled_any memalign posix_memalign aligned_malloc &&
4625     enabled_any $need_memalign && enable memalign_hack
4626
4627 # add_dep lib dep
4628 # -> enable ${lib}_deps_${dep}
4629 # -> add $dep to ${lib}_deps only once
4630 add_dep() {
4631     lib=$1
4632     dep=$2
4633     enabled "${lib}_deps_${dep}" && return 0
4634     enable  "${lib}_deps_${dep}"
4635     prepend "${lib}_deps" $dep
4636 }
4637
4638 # merge deps lib components
4639 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4640 merge_deps() {
4641     lib=$1
4642     shift
4643     for comp in $*; do
4644         enabled $comp || continue
4645         eval "dep=\"\$${comp}_deps\""
4646         for d in $dep; do
4647             add_dep $lib $d
4648         done
4649     done
4650 }
4651
4652 merge_deps libavfilter $FILTER_LIST
4653
4654 echo "install prefix            $prefix"
4655 echo "source path               $source_path"
4656 echo "C compiler                $cc"
4657 echo "ARCH                      $arch ($cpu)"
4658 if test "$build_suffix" != ""; then
4659     echo "build suffix              $build_suffix"
4660 fi
4661 if test "$progs_suffix" != ""; then
4662     echo "progs suffix              $progs_suffix"
4663 fi
4664 if test "$extra_version" != ""; then
4665     echo "version string suffix     $extra_version"
4666 fi
4667 echo "big-endian                ${bigendian-no}"
4668 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4669 if enabled x86; then
4670     echo "${yasmexe}                      ${yasm-no}"
4671     echo "MMX enabled               ${mmx-no}"
4672     echo "MMXEXT enabled            ${mmxext-no}"
4673     echo "3DNow! enabled            ${amd3dnow-no}"
4674     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4675     echo "SSE enabled               ${sse-no}"
4676     echo "SSSE3 enabled             ${ssse3-no}"
4677     echo "AVX enabled               ${avx-no}"
4678     echo "FMA4 enabled              ${fma4-no}"
4679     echo "i686 features enabled     ${i686-no}"
4680     echo "CMOV is fast              ${fast_cmov-no}"
4681     echo "EBX available             ${ebx_available-no}"
4682     echo "EBP available             ${ebp_available-no}"
4683 fi
4684 if enabled arm; then
4685     echo "ARMv5TE enabled           ${armv5te-no}"
4686     echo "ARMv6 enabled             ${armv6-no}"
4687     echo "ARMv6T2 enabled           ${armv6t2-no}"
4688     echo "VFP enabled               ${vfp-no}"
4689     echo "NEON enabled              ${neon-no}"
4690     echo "THUMB enabled             ${thumb-no}"
4691 fi
4692 if enabled mips; then
4693     echo "MIPS FPU enabled          ${mipsfpu-no}"
4694     echo "MIPS32R2 enabled          ${mips32r2-no}"
4695     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4696     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4697 fi
4698 if enabled ppc; then
4699     echo "AltiVec enabled           ${altivec-no}"
4700     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4701     echo "dcbzl available           ${dcbzl-no}"
4702 fi
4703 if enabled sparc; then
4704     echo "VIS enabled               ${vis-no}"
4705 fi
4706 echo "debug symbols             ${debug-no}"
4707 echo "strip symbols             ${stripping-no}"
4708 echo "optimize for size         ${small-no}"
4709 echo "optimizations             ${optimizations-no}"
4710 echo "static                    ${static-no}"
4711 echo "shared                    ${shared-no}"
4712 echo "postprocessing support    ${postproc-no}"
4713 echo "new filter support        ${avfilter-no}"
4714 echo "network support           ${network-no}"
4715 echo "threading support         ${thread_type-no}"
4716 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4717 echo "SDL support               ${sdl-no}"
4718 echo "opencl enabled            ${opencl-no}"
4719 echo "libzvbi enabled           ${libzvbi-no}"
4720 echo "texi2html enabled         ${texi2html-no}"
4721 echo "perl enabled              ${perl-no}"
4722 echo "pod2man enabled           ${pod2man-no}"
4723 echo "makeinfo enabled          ${makeinfo-no}"
4724 test -n "$random_seed" &&
4725     echo "random seed               ${random_seed}"
4726 echo
4727
4728 echo "External libraries:"
4729 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4730 echo
4731
4732 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4733     echo "Enabled ${type}s:"
4734     eval list=\$$(toupper $type)_LIST
4735     print_enabled '_*' $list | print_3_columns
4736     echo
4737 done
4738
4739 license="LGPL version 2.1 or later"
4740 if enabled nonfree; then
4741     license="nonfree and unredistributable"
4742 elif enabled gplv3; then
4743     license="GPL version 3 or later"
4744 elif enabled lgplv3; then
4745     license="LGPL version 3 or later"
4746 elif enabled gpl; then
4747     license="GPL version 2 or later"
4748 fi
4749
4750 echo "License: $license"
4751
4752 echo "Creating config.mak, config.h, and doc/config.texi..."
4753
4754 test -e Makefile || $ln_s "$source_path/Makefile" .
4755
4756 enabled stripping || strip="echo skipping strip"
4757
4758 config_files="$TMPH config.mak doc/config.texi"
4759
4760 cat > config.mak <<EOF
4761 # Automatically generated by configure - do not modify!
4762 ifndef FFMPEG_CONFIG_MAK
4763 FFMPEG_CONFIG_MAK=1
4764 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4765 prefix=$prefix
4766 LIBDIR=\$(DESTDIR)$libdir
4767 SHLIBDIR=\$(DESTDIR)$shlibdir
4768 INCDIR=\$(DESTDIR)$incdir
4769 BINDIR=\$(DESTDIR)$bindir
4770 DATADIR=\$(DESTDIR)$datadir
4771 DOCDIR=\$(DESTDIR)$docdir
4772 MANDIR=\$(DESTDIR)$mandir
4773 SRC_PATH=$source_path
4774 ifndef MAIN_MAKEFILE
4775 SRC_PATH:=\$(SRC_PATH:.%=..%)
4776 endif
4777 CC_IDENT=$cc_ident
4778 ARCH=$arch
4779 CC=$cc
4780 CXX=$cxx
4781 AS=$as
4782 LD=$ld
4783 DEPCC=$dep_cc
4784 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4785 DEPAS=$as
4786 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4787 YASM=$yasmexe
4788 DEPYASM=$yasmexe
4789 AR=$ar
4790 ARFLAGS=$arflags
4791 AR_O=$ar_o
4792 RANLIB=$ranlib
4793 STRIP=$strip
4794 CP=cp -p
4795 LN_S=$ln_s
4796 CPPFLAGS=$CPPFLAGS
4797 CFLAGS=$CFLAGS
4798 CXXFLAGS=$CXXFLAGS
4799 ASFLAGS=$ASFLAGS
4800 AS_C=$AS_C
4801 AS_O=$AS_O
4802 CC_C=$CC_C
4803 CC_E=$CC_E
4804 CC_O=$CC_O
4805 CXX_C=$CXX_C
4806 CXX_O=$CXX_O
4807 LD_O=$LD_O
4808 LD_LIB=$LD_LIB
4809 LD_PATH=$LD_PATH
4810 DLLTOOL=$dlltool
4811 LDFLAGS=$LDFLAGS
4812 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4813 YASMFLAGS=$YASMFLAGS
4814 BUILDSUF=$build_suffix
4815 PROGSSUF=$progs_suffix
4816 FULLNAME=$FULLNAME
4817 LIBPREF=$LIBPREF
4818 LIBSUF=$LIBSUF
4819 LIBNAME=$LIBNAME
4820 SLIBPREF=$SLIBPREF
4821 SLIBSUF=$SLIBSUF
4822 EXESUF=$EXESUF
4823 EXTRA_VERSION=$extra_version
4824 CCDEP=$CCDEP
4825 CXXDEP=$CXXDEP
4826 CCDEP_FLAGS=$CCDEP_FLAGS
4827 ASDEP=$ASDEP
4828 ASDEP_FLAGS=$ASDEP_FLAGS
4829 CC_DEPFLAGS=$CC_DEPFLAGS
4830 AS_DEPFLAGS=$AS_DEPFLAGS
4831 HOSTCC=$host_cc
4832 HOSTLD=$host_ld
4833 HOSTCFLAGS=$host_cflags
4834 HOSTCPPFLAGS=$host_cppflags
4835 HOSTEXESUF=$HOSTEXESUF
4836 HOSTLDFLAGS=$host_ldflags
4837 HOSTLIBS=$host_libs
4838 DEPHOSTCC=$host_cc
4839 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4840 HOSTCCDEP=$HOSTCCDEP
4841 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4842 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4843 HOSTCC_C=$HOSTCC_C
4844 HOSTCC_O=$HOSTCC_O
4845 HOSTLD_O=$HOSTLD_O
4846 TARGET_EXEC=$target_exec $target_exec_args
4847 TARGET_PATH=$target_path
4848 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4849 LIBS-ffplay=$sdl_libs
4850 CFLAGS-ffplay=$sdl_cflags
4851 ZLIB=$($ldflags_filter -lz)
4852 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4853 EXTRALIBS=$extralibs
4854 COMPAT_OBJS=$compat_objs
4855 EXEOBJS=$exeobjs
4856 INSTALL=$install
4857 LIBTARGET=${LIBTARGET}
4858 SLIBNAME=${SLIBNAME}
4859 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4860 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4861 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4862 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4863 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4864 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4865 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4866 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4867 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4868 NOREDZONE_FLAGS=$noredzone_flags
4869 EOF
4870
4871 get_version(){
4872     lcname=lib${1}
4873     name=$(toupper $lcname)
4874     file=$source_path/$lcname/version.h
4875     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4876     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
4877     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4878     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4879     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4880     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4881 }
4882
4883 map 'get_version $v' $LIBRARY_LIST
4884
4885 cat > $TMPH <<EOF
4886 /* Automatically generated by configure - do not modify! */
4887 #ifndef FFMPEG_CONFIG_H
4888 #define FFMPEG_CONFIG_H
4889 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4890 #define FFMPEG_LICENSE "$(c_escape $license)"
4891 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4892 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4893 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4894 #define av_restrict $_restrict
4895 #define EXTERN_PREFIX "${extern_prefix}"
4896 #define EXTERN_ASM ${extern_prefix}
4897 #define SLIBSUF "$SLIBSUF"
4898 #define HAVE_MMX2 HAVE_MMXEXT
4899 EOF
4900
4901 test -n "$assert_level" &&
4902     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4903
4904 test -n "$malloc_prefix" &&
4905     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4906
4907 if enabled yasm; then
4908     append config_files $TMPASM
4909     printf '' >$TMPASM
4910 fi
4911
4912 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4913
4914
4915 mkdir -p doc
4916 echo "@c auto-generated by configure" > doc/config.texi
4917
4918 print_config ARCH_   "$config_files" $ARCH_LIST
4919 print_config HAVE_   "$config_files" $HAVE_LIST
4920 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4921                                      $CONFIG_EXTRA      \
4922                                      $ALL_COMPONENTS    \
4923
4924 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4925 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4926
4927 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4928 cp_if_changed $TMPH config.h
4929 touch .config
4930
4931 enabled yasm && cp_if_changed $TMPASM config.asm
4932
4933 cat > $TMPH <<EOF
4934 /* Generated by ffconf */
4935 #ifndef AVUTIL_AVCONFIG_H
4936 #define AVUTIL_AVCONFIG_H
4937 EOF
4938
4939 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4940
4941 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4942
4943 cp_if_changed $TMPH libavutil/avconfig.h
4944
4945 if test -n "$WARNINGS"; then
4946     printf "\n$WARNINGS"
4947     enabled fatal_warnings && exit 1
4948 fi
4949
4950 # build pkg-config files
4951
4952 pkgconfig_generate(){
4953     name=$1
4954     shortname=${name#lib}${build_suffix}
4955     comment=$2
4956     version=$3
4957     libs=$4
4958     requires=$5
4959     enabled ${name#lib} || return 0
4960     mkdir -p $name
4961     cat <<EOF > $name/$name${build_suffix}.pc
4962 prefix=$prefix
4963 exec_prefix=\${prefix}
4964 libdir=$libdir
4965 includedir=$incdir
4966
4967 Name: $name
4968 Description: $comment
4969 Version: $version
4970 Requires: $(enabled shared || echo $requires)
4971 Requires.private: $(enabled shared && echo $requires)
4972 Conflicts:
4973 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4974 Libs.private: $(enabled shared && echo $libs)
4975 Cflags: -I\${includedir}
4976 EOF
4977
4978 mkdir -p doc/examples/pc-uninstalled
4979 includedir=${source_path}
4980 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4981     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4982 prefix=
4983 exec_prefix=
4984 libdir=\${pcfiledir}/../../../$name
4985 includedir=${includedir}
4986
4987 Name: $name
4988 Description: $comment
4989 Version: $version
4990 Requires: $requires
4991 Conflicts:
4992 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
4993 Cflags: -I\${includedir}
4994 EOF
4995 }
4996
4997 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4998 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4999 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5000 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5001 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5002 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5003 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5004 lavfi_libs=${lavfi_libs%, }
5005
5006 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5007 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5008
5009 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5010 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5011 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5012 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5013 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5014 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5015 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5016 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5017 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5018
5019 fix_ffmpeg_remote(){
5020     git_remote_from=$1
5021     git_remote_to=$2
5022     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5023     if [ "$fixme_remote" != "" ]; then
5024         echolog "
5025 Outdated domain in git config, the official domain for ffmpeg git is since
5026 November 2011, source.ffmpeg.org, both the old and the new point to the same
5027 repository and server. To update it enter the following commands:
5028 "
5029         for remote in $fixme_remote; do
5030             echolog "git remote set-url $remote $git_remote_to"
5031         done
5032     fi
5033 }
5034
5035 if test -f "$source_path/.git/config"; then
5036     remote_from=git.videolan.org
5037     remote_to=source.ffmpeg.org
5038     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5039     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5040 fi