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 "$@")
 730 }
 731
 732 add_stripflags(){
 733     append ASMSTRIPFLAGS "$@"
 734 }
 735
 736 add_extralibs(){
 737     prepend extralibs $($ldflags_filter "$@")
 738 }
 739
 740 add_host_cppflags(){
 741     append host_cppflags "$@"
 742 }
 743
 744 add_host_cflags(){
 745     append host_cflags $($host_cflags_filter "$@")
 746 }
 747
 748 add_host_ldflags(){
 749     append host_ldflags $($host_ldflags_filter "$@")
 750 }
 751
 752 add_compat(){
 753     append compat_objs $1
 754     shift
 755     map 'add_cppflags -D$v' "$@"
 756 }
 757
 758 check_cmd(){
 759     log "$@"
 760     "$@" >> $logfile 2>&1
 761 }
 762
 763 cc_o(){
 764     eval printf '%s\\n' $CC_O
 765 }
 766
 767 cc_e(){
 768     eval printf '%s\\n' $CC_E
 769 }
 770
 771 check_cc(){
 772     log check_cc "$@"
 773     cat > $TMPC
 774     log_file $TMPC
 775     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 776 }
 777
 778 check_cxx(){
 779     log check_cxx "$@"
 780     cat > $TMPCPP
 781     log_file $TMPCPP
 782     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 783 }
 784
 785 check_cpp(){
 786     log check_cpp "$@"
 787     cat > $TMPC
 788     log_file $TMPC
 789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 790 }
 791
 792 as_o(){
 793     eval printf '%s\\n' $AS_O
 794 }
 795
 796 check_as(){
 797     log check_as "$@"
 798     cat > $TMPS
 799     log_file $TMPS
 800     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 801 }
 802
 803 check_inline_asm(){
 804     log check_inline_asm "$@"
 805     name="$1"
 806     code="$2"
 807     shift 2
 808     disable $name
 809     check_cc "$@" <<EOF && enable $name
 810 void foo(void){ __asm__ volatile($code); }
 811 EOF
 812 }
 813
 814 check_insn(){
 815     log check_insn "$@"
 816     check_inline_asm ${1}_inline "\"$2\""
 817     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 818 }
 819
 820 check_yasm(){
 821     log check_yasm "$@"
 822     echo "$1" > $TMPS
 823     log_file $TMPS
 824     shift 1
 825     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 826 }
 827
 828 ld_o(){
 829     eval printf '%s\\n' $LD_O
 830 }
 831
 832 check_ld(){
 833     log check_ld "$@"
 834     type=$1
 835     shift 1
 836     flags=$(filter_out '-l*|*.so' $@)
 837     libs=$(filter '-l*|*.so' $@)
 838     check_$type $($cflags_filter $flags) || return
 839     flags=$($ldflags_filter $flags)
 840     libs=$($ldflags_filter $libs)
 841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 842 }
 843
 844 check_code(){
 845     log check_code "$@"
 846     check=$1
 847     headers=$2
 848     code=$3
 849     shift 3
 850     {
 851         for hdr in $headers; do
 852             echo "#include <$hdr>"
 853         done
 854         echo "int main(void) { $code; return 0; }"
 855     } | check_$check "$@"
 856 }
 857
 858 check_cppflags(){
 859     log check_cppflags "$@"
 860     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 861 int x;
 862 EOF
 863 }
 864
 865 check_cflags(){
 866     log check_cflags "$@"
 867     set -- $($cflags_filter "$@")
 868     check_cc "$@" <<EOF && append CFLAGS "$@"
 869 int x;
 870 EOF
 871 }
 872
 873 check_cxxflags(){
 874     log check_cxxflags "$@"
 875     set -- $($cflags_filter "$@")
 876     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 877 int x;
 878 EOF
 879 }
 880
 881 test_ldflags(){
 882     log test_ldflags "$@"
 883     check_ld "cc" "$@" <<EOF
 884 int main(void){ return 0; }
 885 EOF
 886 }
 887
 888 check_ldflags(){
 889     log check_ldflags "$@"
 890     test_ldflags "$@" && add_ldflags "$@"
 891 }
 892
 893 test_stripflags(){
 894     log test_stripflags "$@"
 895     # call check_cc to get a fresh TMPO
 896     check_cc <<EOF
 897 int main(void) { return 0; }
 898 EOF
 899     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 900 }
 901
 902 check_stripflags(){
 903     log check_stripflags "$@"
 904     test_stripflags "$@" && add_stripflags "$@"
 905 }
 906
 907 check_header(){
 908     log check_header "$@"
 909     header=$1
 910     shift
 911     disable_safe $header
 912     check_cpp "$@" <<EOF && enable_safe $header
 913 #include <$header>
 914 int x;
 915 EOF
 916 }
 917
 918 check_func(){
 919     log check_func "$@"
 920     func=$1
 921     shift
 922     disable $func
 923     check_ld "cc" "$@" <<EOF && enable $func
 924 extern int $func();
 925 int main(void){ $func(); }
 926 EOF
 927 }
 928
 929 check_mathfunc(){
 930     log check_mathfunc "$@"
 931     func=$1
 932     narg=$2
 933     shift 2
 934     test $narg = 2 && args="f, g" || args="f"
 935     disable $func
 936     check_ld "cc" "$@" <<EOF && enable $func
 937 #include <math.h>
 938 float foo(float f, float g) { return $func($args); }
 939 int main(void){ return (int) foo; }
 940 EOF
 941 }
 942
 943 check_func_headers(){
 944     log check_func_headers "$@"
 945     headers=$1
 946     funcs=$2
 947     shift 2
 948     {
 949         for hdr in $headers; do
 950             echo "#include <$hdr>"
 951         done
 952         for func in $funcs; do
 953             echo "long check_$func(void) { return (long) $func; }"
 954         done
 955         echo "int main(void) { return 0; }"
 956     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 957 }
 958
 959 check_class_headers_cpp(){
 960     log check_class_headers_cpp "$@"
 961     headers=$1
 962     classes=$2
 963     shift 2
 964     {
 965         for hdr in $headers; do
 966             echo "#include <$hdr>"
 967         done
 968         echo "int main(void) { "
 969         i=1
 970         for class in $classes; do
 971             echo "$class obj$i;"
 972             i=$(expr $i + 1)
 973         done
 974         echo "return 0; }"
 975     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 976 }
 977
 978 check_cpp_condition(){
 979     log check_cpp_condition "$@"
 980     header=$1
 981     condition=$2
 982     shift 2
 983     check_cpp "$@" <<EOF
 984 #include <$header>
 985 #if !($condition)
 986 #error "unsatisfied condition: $condition"
 987 #endif
 988 EOF
 989 }
 990
 991 check_lib(){
 992     log check_lib "$@"
 993     header="$1"
 994     func="$2"
 995     shift 2
 996     check_header $header && check_func $func "$@" && add_extralibs "$@"
 997 }
 998
 999 check_lib2(){
1000     log check_lib2 "$@"
1001     headers="$1"
1002     funcs="$2"
1003     shift 2
1004     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1005 }
1006
1007 check_lib_cpp(){
1008     log check_lib_cpp "$@"
1009     headers="$1"
1010     classes="$2"
1011     shift 2
1012     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1013 }
1014
1015 check_pkg_config(){
1016     log check_pkg_config "$@"
1017     pkg="$1"
1018     headers="$2"
1019     funcs="$3"
1020     shift 3
1021     check_cmd $pkg_config --exists --print-errors $pkg || return
1022     pkg_cflags=$($pkg_config --cflags $pkg)
1023     pkg_libs=$($pkg_config --libs $pkg)
1024     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1025         set_safe ${pkg}_cflags $pkg_cflags   &&
1026         set_safe ${pkg}_libs   $pkg_libs
1027 }
1028
1029 check_exec(){
1030     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1031 }
1032
1033 check_exec_crash(){
1034     code=$(cat)
1035
1036     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1037     # are safe but may not be available everywhere.  Thus we use
1038     # raise(SIGTERM) instead.  The check is run in a subshell so we
1039     # can redirect the "Terminated" message from the shell.  SIGBUS
1040     # is not defined by standard C so it is used conditionally.
1041
1042     (check_exec "$@") >> $logfile 2>&1 <<EOF
1043 #include <signal.h>
1044 static void sighandler(int sig){
1045     raise(SIGTERM);
1046 }
1047 int foo(void){
1048     $code
1049 }
1050 int (*func_ptr)(void) = foo;
1051 int main(void){
1052     signal(SIGILL, sighandler);
1053     signal(SIGFPE, sighandler);
1054     signal(SIGSEGV, sighandler);
1055 #ifdef SIGBUS
1056     signal(SIGBUS, sighandler);
1057 #endif
1058     return func_ptr();
1059 }
1060 EOF
1061 }
1062
1063 check_type(){
1064     log check_type "$@"
1065     headers=$1
1066     type=$2
1067     shift 2
1068     disable_safe "$type"
1069     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1070 }
1071
1072 check_struct(){
1073     log check_struct "$@"
1074     headers=$1
1075     struct=$2
1076     member=$3
1077     shift 3
1078     disable_safe "${struct}_${member}"
1079     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1080         enable_safe "${struct}_${member}"
1081 }
1082
1083 check_builtin(){
1084     log check_builtin "$@"
1085     name=$1
1086     headers=$2
1087     builtin=$3
1088     shift 3
1089     disable "$name"
1090     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1091 }
1092
1093 require(){
1094     name="$1"
1095     header="$2"
1096     func="$3"
1097     shift 3
1098     check_lib $header $func "$@" || die "ERROR: $name not found"
1099 }
1100
1101 require2(){
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_cpp(){
1110     name="$1"
1111     headers="$2"
1112     classes="$3"
1113     shift 3
1114     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1115 }
1116
1117 require_pkg_config(){
1118     pkg="$1"
1119     check_pkg_config "$@" || die "ERROR: $pkg not found"
1120     add_cflags    $(get_safe ${pkg}_cflags)
1121     add_extralibs $(get_safe ${pkg}_libs)
1122 }
1123
1124 require_libfreetype(){
1125     log require_libfreetype "$@"
1126     pkg="freetype2"
1127     check_cmd $pkg_config --exists --print-errors $pkg \
1128       || die "ERROR: $pkg not found"
1129     pkg_cflags=$($pkg_config --cflags $pkg)
1130     pkg_libs=$($pkg_config --libs $pkg)
1131     {
1132         echo "#include <ft2build.h>"
1133         echo "#include FT_FREETYPE_H"
1134         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1135         echo "int main(void) { return 0; }"
1136     } | check_ld "cc" $pkg_cflags $pkg_libs \
1137       && set_safe ${pkg}_cflags $pkg_cflags \
1138       && set_safe ${pkg}_libs   $pkg_libs \
1139       || die "ERROR: $pkg not found"
1140     add_cflags    $(get_safe ${pkg}_cflags)
1141     add_extralibs $(get_safe ${pkg}_libs)
1142 }
1143
1144 hostcc_o(){
1145     eval printf '%s\\n' $HOSTCC_O
1146 }
1147
1148 check_host_cc(){
1149     log check_host_cc "$@"
1150     cat > $TMPC
1151     log_file $TMPC
1152     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1153 }
1154
1155 check_host_cppflags(){
1156     log check_host_cppflags "$@"
1157     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1158 int x;
1159 EOF
1160 }
1161
1162 check_host_cflags(){
1163     log check_host_cflags "$@"
1164     set -- $($host_cflags_filter "$@")
1165     check_host_cc "$@" <<EOF && append host_cflags "$@"
1166 int x;
1167 EOF
1168 }
1169
1170 apply(){
1171     file=$1
1172     shift
1173     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1174 }
1175
1176 cp_if_changed(){
1177     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1178     mkdir -p "$(dirname $2)"
1179     $cp_f "$1" "$2"
1180 }
1181
1182 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1183 # system-dependent things.
1184
1185 COMPONENT_LIST="
1186     bsfs
1187     decoders
1188     demuxers
1189     encoders
1190     filters
1191     hwaccels
1192     indevs
1193     muxers
1194     outdevs
1195     parsers
1196     protocols
1197 "
1198
1199 EXTERNAL_LIBRARY_LIST="
1200     avisynth
1201     bzlib
1202     crystalhd
1203     fontconfig
1204     frei0r
1205     gnutls
1206     iconv
1207     ladspa
1208     libaacplus
1209     libass
1210     libbluray
1211     libcaca
1212     libcdio
1213     libcelt
1214     libdc1394
1215     libfaac
1216     libfdk_aac
1217     libflite
1218     libfreetype
1219     libgme
1220     libgsm
1221     libiec61883
1222     libilbc
1223     libmodplug
1224     libmp3lame
1225     libnut
1226     libopencore_amrnb
1227     libopencore_amrwb
1228     libopencv
1229     libopenjpeg
1230     libopus
1231     libpulse
1232     libquvi
1233     librtmp
1234     libschroedinger
1235     libshine
1236     libsoxr
1237     libspeex
1238     libssh
1239     libstagefright_h264
1240     libtheora
1241     libtwolame
1242     libutvideo
1243     libv4l2
1244     libvidstab
1245     libvo_aacenc
1246     libvo_amrwbenc
1247     libvorbis
1248     libvpx
1249     libwavpack
1250     libx264
1251     libxavs
1252     libxvid
1253     libzmq
1254     libzvbi
1255     openal
1256     opencl
1257     openssl
1258     x11grab
1259     zlib
1260 "
1261
1262 DOCUMENT_LIST="
1263     doc
1264     htmlpages
1265     manpages
1266     podpages
1267     txtpages
1268 "
1269
1270 HWACCEL_LIST="
1271     dxva2
1272     vaapi
1273     vda
1274     vdpau
1275 "
1276
1277 LIBRARY_LIST="
1278     avcodec
1279     avdevice
1280     avfilter
1281     avformat
1282     avresample
1283     avutil
1284     postproc
1285     swresample
1286     swscale
1287 "
1288
1289 PROGRAM_LIST="
1290     ffplay
1291     ffprobe
1292     ffserver
1293     ffmpeg
1294 "
1295
1296 CONFIG_LIST="
1297     $COMPONENT_LIST
1298     $DOCUMENT_LIST
1299     $EXTERNAL_LIBRARY_LIST
1300     $HWACCEL_LIST
1301     $LIBRARY_LIST
1302     $PROGRAM_LIST
1303     dct
1304     dwt
1305     error_resilience
1306     fast_unaligned
1307     fft
1308     ftrapv
1309     gpl
1310     gray
1311     hardcoded_tables
1312     incompatible_libav_abi
1313     incompatible_fork_abi
1314     lsp
1315     lzo
1316     mdct
1317     memalign_hack
1318     memory_poisoning
1319     network
1320     nonfree
1321     pic
1322     raise_major
1323     rdft
1324     runtime_cpudetect
1325     safe_bitstream_reader
1326     shared
1327     small
1328     sram
1329     static
1330     swscale_alpha
1331     thumb
1332     version3
1333     xmm_clobber_test
1334 "
1335
1336 THREADS_LIST='
1337     pthreads
1338     w32threads
1339     os2threads
1340 '
1341
1342 ATOMICS_LIST='
1343     atomics_gcc
1344     atomics_suncc
1345     atomics_win32
1346 '
1347
1348 ARCH_LIST='
1349     aarch64
1350     alpha
1351     arm
1352     avr32
1353     avr32_ap
1354     avr32_uc
1355     bfin
1356     ia64
1357     m68k
1358     mips
1359     mips64
1360     parisc
1361     ppc
1362     ppc64
1363     s390
1364     sh4
1365     sparc
1366     sparc64
1367     tilegx
1368     tilepro
1369     tomi
1370     x86
1371     x86_32
1372     x86_64
1373 '
1374
1375 ARCH_EXT_LIST_ARM='
1376     armv5te
1377     armv6
1378     armv6t2
1379     neon
1380     vfp
1381     vfpv3
1382 '
1383
1384 ARCH_EXT_LIST_X86='
1385     amd3dnow
1386     amd3dnowext
1387     avx
1388     avx2
1389     fma4
1390     i686
1391     mmx
1392     mmxext
1393     sse
1394     sse2
1395     sse3
1396     sse4
1397     sse42
1398     ssse3
1399 '
1400
1401 ARCH_EXT_LIST="
1402     $ARCH_EXT_LIST_ARM
1403     $ARCH_EXT_LIST_X86
1404     altivec
1405     ppc4xx
1406     vis
1407     mipsfpu
1408     mips32r2
1409     mipsdspr1
1410     mipsdspr2
1411 "
1412
1413 HAVE_LIST_CMDLINE='
1414     inline_asm
1415     symver
1416     yasm
1417 '
1418
1419 HAVE_LIST_PUB='
1420     bigendian
1421     fast_unaligned
1422     incompatible_libav_abi
1423     incompatible_fork_abi
1424 '
1425
1426 MATH_FUNCS="
1427     atanf
1428     atan2f
1429     cbrt
1430     cbrtf
1431     cosf
1432     exp2
1433     exp2f
1434     expf
1435     isinf
1436     isnan
1437     ldexpf
1438     llrint
1439     llrintf
1440     log2
1441     log2f
1442     log10f
1443     lrint
1444     lrintf
1445     powf
1446     rint
1447     round
1448     roundf
1449     sinf
1450     trunc
1451     truncf
1452 "
1453
1454 HAVE_LIST="
1455     $ARCH_EXT_LIST
1456     $(add_suffix _external $ARCH_EXT_LIST)
1457     $(add_suffix _inline   $ARCH_EXT_LIST)
1458     $HAVE_LIST_CMDLINE
1459     $HAVE_LIST_PUB
1460     $THREADS_LIST
1461     $ATOMICS_LIST
1462     $MATH_FUNCS
1463     access
1464     aligned_malloc
1465     aligned_stack
1466     alsa_asoundlib_h
1467     altivec_h
1468     arpa_inet_h
1469     as_object_arch
1470     asm_mod_q
1471     asm_mod_y
1472     asm_types_h
1473     atomic_cas_ptr
1474     atomics_native
1475     attribute_may_alias
1476     attribute_packed
1477     cdio_paranoia_h
1478     cdio_paranoia_paranoia_h
1479     CL_cl_h
1480     clock_gettime
1481     closesocket
1482     CommandLineToArgvW
1483     cpunop
1484     CryptGenRandom
1485     dcbzl
1486     dev_bktr_ioctl_bt848_h
1487     dev_bktr_ioctl_meteor_h
1488     dev_ic_bt8xx_h
1489     dev_video_bktr_ioctl_bt848_h
1490     dev_video_meteor_ioctl_meteor_h
1491     direct_h
1492     dlfcn_h
1493     dlopen
1494     dos_paths
1495     dxva_h
1496     ebp_available
1497     ebx_available
1498     fast_64bit
1499     fast_clz
1500     fast_cmov
1501     fcntl
1502     fork
1503     getaddrinfo
1504     gethrtime
1505     getopt
1506     GetProcessAffinityMask
1507     GetProcessMemoryInfo
1508     GetProcessTimes
1509     GetSystemTimeAsFileTime
1510     getrusage
1511     getservbyport
1512     gettimeofday
1513     glob
1514     gnu_as
1515     gsm_h
1516     ibm_asm
1517     inet_aton
1518     io_h
1519     inline_asm_labels
1520     isatty
1521     jack_port_get_latency_range
1522     kbhit
1523     ldbrx
1524     libdc1394_1
1525     libdc1394_2
1526     local_aligned_16
1527     local_aligned_8
1528     localtime_r
1529     loongson
1530     lzo1x_999_compress
1531     machine_ioctl_bt848_h
1532     machine_ioctl_meteor_h
1533     machine_rw_barrier
1534     makeinfo
1535     malloc_h
1536     MapViewOfFile
1537     memalign
1538     MemoryBarrier
1539     mkstemp
1540     mm_empty
1541     mmap
1542     mprotect
1543     msvcrt
1544     nanosleep
1545     openjpeg_1_5_openjpeg_h
1546     PeekNamedPipe
1547     perl
1548     pod2man
1549     poll_h
1550     posix_memalign
1551     pragma_deprecated
1552     pthread_cancel
1553     rdtsc
1554     rsync_contimeout
1555     sarestart
1556     sched_getaffinity
1557     sdl
1558     SetConsoleTextAttribute
1559     setmode
1560     setrlimit
1561     Sleep
1562     sndio_h
1563     socklen_t
1564     soundcard_h
1565     strerror_r
1566     struct_addrinfo
1567     struct_group_source_req
1568     struct_ip_mreq_source
1569     struct_ipv6_mreq
1570     struct_pollfd
1571     struct_rusage_ru_maxrss
1572     struct_sctp_event_subscribe
1573     struct_sockaddr_in6
1574     struct_sockaddr_sa_len
1575     struct_sockaddr_storage
1576     struct_stat_st_mtim_tv_nsec
1577     struct_v4l2_frmivalenum_discrete
1578     symver_asm_label
1579     symver_gnu_asm
1580     sync_val_compare_and_swap
1581     sysconf
1582     sysctl
1583     sys_mman_h
1584     sys_param_h
1585     sys_resource_h
1586     sys_select_h
1587     sys_soundcard_h
1588     sys_time_h
1589     sys_un_h
1590     sys_videoio_h
1591     termios_h
1592     texi2html
1593     threads
1594     unistd_h
1595     usleep
1596     vfp_args
1597     VirtualAlloc
1598     windows_h
1599     winsock2_h
1600     xform_asm
1601     xmm_clobbers
1602 "
1603
1604 # options emitted with CONFIG_ prefix but not available on the command line
1605 CONFIG_EXTRA="
1606     aandcttables
1607     ac3dsp
1608     audio_frame_queue
1609     dsputil
1610     exif
1611     frame_thread_encoder
1612     gcrypt
1613     golomb
1614     gplv3
1615     h264chroma
1616     h264dsp
1617     h264pred
1618     h264qpel
1619     hpeldsp
1620     huffman
1621     lgplv3
1622     lpc
1623     mpegaudio
1624     mpegaudiodsp
1625     mpegvideo
1626     mpegvideoenc
1627     nettle
1628     rangecoder
1629     riffdec
1630     riffenc
1631     rtpdec
1632     rtpenc_chain
1633     sinewin
1634     videodsp
1635     vp3dsp
1636 "
1637
1638 CMDLINE_SELECT="
1639     $ARCH_EXT_LIST
1640     $CONFIG_LIST
1641     $HAVE_LIST_CMDLINE
1642     $THREADS_LIST
1643     asm
1644     cross_compile
1645     debug
1646     extra_warnings
1647     logging
1648     lto
1649     optimizations
1650     stripping
1651 "
1652
1653 PATHS_LIST='
1654     bindir
1655     datadir
1656     docdir
1657     incdir
1658     libdir
1659     mandir
1660     prefix
1661     shlibdir
1662 '
1663
1664 CMDLINE_SET="
1665     $PATHS_LIST
1666     ar
1667     arch
1668     as
1669     assert_level
1670     build_suffix
1671     cc
1672     cpu
1673     cross_prefix
1674     cxx
1675     dep_cc
1676     extra_version
1677     host_cc
1678     host_cflags
1679     host_ld
1680     host_ldflags
1681     host_libs
1682     host_os
1683     install
1684     ld
1685     logfile
1686     malloc_prefix
1687     nm
1688     optflags
1689     pkg_config
1690     progs_suffix
1691     random_seed
1692     samples
1693     strip
1694     sysinclude
1695     sysroot
1696     target_exec
1697     target_os
1698     target_path
1699     target_samples
1700     tempprefix
1701     toolchain
1702     valgrind
1703     yasmexe
1704 "
1705
1706 CMDLINE_APPEND="
1707     extra_cflags
1708     extra_cxxflags
1709     host_cppflags
1710 "
1711
1712 # code dependency declarations
1713
1714 # architecture extensions
1715
1716 armv5te_deps="arm"
1717 armv6_deps="arm"
1718 armv6t2_deps="arm"
1719 neon_deps="arm"
1720 vfp_deps="arm"
1721 vfpv3_deps="vfp"
1722
1723 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1724
1725 mipsfpu_deps="mips"
1726 mips32r2_deps="mips"
1727 mipsdspr1_deps="mips"
1728 mipsdspr2_deps="mips"
1729
1730 altivec_deps="ppc"
1731 ppc4xx_deps="ppc"
1732
1733 vis_deps="sparc"
1734
1735 cpunop_deps="i686"
1736 x86_64_select="i686"
1737 x86_64_suggest="fast_cmov"
1738
1739 amd3dnow_deps="mmx"
1740 amd3dnowext_deps="amd3dnow"
1741 mmx_deps="x86"
1742 mmxext_deps="mmx"
1743 sse_deps="mmxext"
1744 sse2_deps="sse"
1745 sse3_deps="sse2"
1746 ssse3_deps="sse3"
1747 sse4_deps="ssse3"
1748 sse42_deps="sse4"
1749 avx_deps="sse42"
1750 fma4_deps="avx"
1751 avx2_deps="avx"
1752
1753 mmx_external_deps="yasm"
1754 mmx_inline_deps="inline_asm"
1755 mmx_suggest="mmx_external mmx_inline"
1756
1757 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1758     eval dep=\$${ext}_deps
1759     eval ${ext}_external_deps='"${dep}_external"'
1760     eval ${ext}_inline_deps='"${dep}_inline"'
1761     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1762 done
1763
1764 aligned_stack_if_any="ppc x86"
1765 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1766 fast_clz_if_any="alpha avr32 mips ppc x86"
1767 fast_unaligned_if_any="ppc x86"
1768
1769 inline_asm_deps="!tms470"
1770 need_memalign="altivec neon sse"
1771
1772 symver_if_any="symver_asm_label symver_gnu_asm"
1773
1774 log2_deps="!msvcrt"
1775
1776 # subsystems
1777 dct_select="rdft"
1778 error_resilience_select="dsputil"
1779 frame_thread_encoder_deps="encoders threads"
1780 lpc_select="dsputil"
1781 mdct_select="fft"
1782 rdft_select="fft"
1783 mpegaudio_select="mpegaudiodsp"
1784 mpegaudiodsp_select="dct"
1785 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1786 mpegvideoenc_select="mpegvideo"
1787
1788 # decoders / encoders
1789 aac_decoder_select="mdct sinewin"
1790 aac_encoder_select="audio_frame_queue mdct sinewin"
1791 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1792 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1793 ac3_encoder_select="mdct ac3dsp dsputil"
1794 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1795 aic_decoder_select="dsputil golomb"
1796 alac_encoder_select="lpc"
1797 als_decoder_select="dsputil"
1798 amrnb_decoder_select="lsp"
1799 amrwb_decoder_select="lsp"
1800 amv_decoder_select="dsputil hpeldsp exif"
1801 amv_encoder_select="aandcttables"
1802 ape_decoder_select="dsputil"
1803 asv1_decoder_select="dsputil"
1804 asv1_encoder_select="dsputil"
1805 asv2_decoder_select="dsputil"
1806 asv2_encoder_select="dsputil"
1807 atrac1_decoder_select="mdct sinewin"
1808 atrac3_decoder_select="mdct"
1809 avrn_decoder_select="exif"
1810 bink_decoder_select="dsputil hpeldsp"
1811 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1812 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1813 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1814 cllc_decoder_select="dsputil"
1815 comfortnoise_encoder_select="lpc"
1816 cook_decoder_select="dsputil mdct sinewin"
1817 cscd_decoder_select="lzo"
1818 cscd_decoder_suggest="zlib"
1819 dca_decoder_select="mdct"
1820 dirac_decoder_select="dsputil dwt golomb videodsp"
1821 dnxhd_decoder_select="dsputil"
1822 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1823 dvvideo_decoder_select="dsputil"
1824 dvvideo_encoder_select="dsputil"
1825 dxa_decoder_select="zlib"
1826 eac3_decoder_select="ac3_decoder"
1827 eac3_encoder_select="ac3_encoder"
1828 eamad_decoder_select="aandcttables dsputil mpegvideo"
1829 eatgq_decoder_select="aandcttables"
1830 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1831 exr_decoder_select="zlib"
1832 ffv1_decoder_select="dsputil golomb rangecoder"
1833 ffv1_encoder_select="dsputil rangecoder"
1834 ffvhuff_decoder_select="dsputil"
1835 ffvhuff_encoder_select="dsputil huffman"
1836 flac_decoder_select="golomb"
1837 flac_encoder_select="dsputil golomb lpc"
1838 flashsv_decoder_select="zlib"
1839 flashsv_encoder_select="zlib"
1840 flashsv2_encoder_select="zlib"
1841 flashsv2_decoder_select="zlib"
1842 flv_decoder_select="h263_decoder"
1843 flv_encoder_select="h263_encoder"
1844 fourxm_decoder_select="dsputil"
1845 fraps_decoder_select="dsputil huffman"
1846 g2m_decoder_select="dsputil zlib"
1847 g729_decoder_select="dsputil"
1848 h261_decoder_select="error_resilience mpegvideo"
1849 h261_encoder_select="aandcttables mpegvideoenc"
1850 h263_decoder_select="error_resilience h263_parser mpegvideo"
1851 h263_encoder_select="aandcttables mpegvideoenc"
1852 h263i_decoder_select="h263_decoder"
1853 h263p_encoder_select="h263_encoder"
1854 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1855 h264_decoder_suggest="error_resilience"
1856 hevc_decoder_select="dsputil golomb videodsp"
1857 huffyuv_decoder_select="dsputil"
1858 huffyuv_encoder_select="dsputil huffman"
1859 iac_decoder_select="dsputil fft mdct sinewin"
1860 imc_decoder_select="dsputil fft mdct sinewin"
1861 indeo3_decoder_select="hpeldsp"
1862 interplay_video_decoder_select="hpeldsp"
1863 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1864 jpegls_encoder_select="golomb"
1865 jv_decoder_select="dsputil"
1866 lagarith_decoder_select="dsputil"
1867 ljpeg_encoder_select="aandcttables mpegvideoenc"
1868 loco_decoder_select="golomb"
1869 mdec_decoder_select="dsputil error_resilience mpegvideo"
1870 metasound_decoder_select="lsp mdct sinewin"
1871 mimic_decoder_select="dsputil hpeldsp"
1872 mjpeg_decoder_select="dsputil hpeldsp exif"
1873 mjpegb_decoder_select="dsputil hpeldsp exif"
1874 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1875 mlp_decoder_select="dsputil mlp_parser"
1876 motionpixels_decoder_select="dsputil"
1877 mp1_decoder_select="mpegaudio"
1878 mp1float_decoder_select="mpegaudio"
1879 mp2_decoder_select="mpegaudio"
1880 mp2float_decoder_select="mpegaudio"
1881 mp3_decoder_select="mpegaudio"
1882 mp3adu_decoder_select="mpegaudio"
1883 mp3adufloat_decoder_select="mpegaudio"
1884 mp3float_decoder_select="mpegaudio"
1885 mp3on4_decoder_select="mpegaudio"
1886 mp3on4float_decoder_select="mpegaudio"
1887 mpc7_decoder_select="dsputil mpegaudiodsp"
1888 mpc8_decoder_select="dsputil mpegaudiodsp"
1889 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1890 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1891 mpeg1video_decoder_select="error_resilience mpegvideo"
1892 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1893 mpeg2video_decoder_select="error_resilience mpegvideo"
1894 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1895 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1896 mpeg4_encoder_select="h263_encoder"
1897 msmpeg4v1_decoder_select="h263_decoder"
1898 msmpeg4v2_decoder_select="h263_decoder"
1899 msmpeg4v2_encoder_select="h263_encoder"
1900 msmpeg4v3_decoder_select="h263_decoder"
1901 msmpeg4v3_encoder_select="h263_encoder"
1902 mss2_decoder_select="error_resilience vc1_decoder"
1903 mxpeg_decoder_select="dsputil hpeldsp exif"
1904 nellymoser_decoder_select="mdct sinewin"
1905 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1906 nuv_decoder_select="dsputil lzo"
1907 png_decoder_select="zlib"
1908 png_encoder_select="dsputil zlib"
1909 prores_decoder_select="dsputil"
1910 prores_encoder_select="dsputil"
1911 qcelp_decoder_select="lsp"
1912 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1913 ra_144_encoder_select="audio_frame_queue lpc"
1914 ralf_decoder_select="golomb"
1915 rtjpeg_decoder_select="dsputil"
1916 rv10_decoder_select="error_resilience h263_decoder"
1917 rv10_encoder_select="h263_encoder"
1918 rv20_decoder_select="error_resilience h263_decoder"
1919 rv20_encoder_select="h263_encoder"
1920 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1921 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1922 shorten_decoder_select="golomb"
1923 sipr_decoder_select="lsp"
1924 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1925 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1926 sonic_decoder_select="golomb"
1927 sonic_encoder_select="golomb"
1928 sonic_ls_encoder_select="golomb"
1929 sp5x_decoder_select="dsputil hpeldsp exif"
1930 svq1_decoder_select="hpeldsp"
1931 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1932 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1933 svq3_decoder_suggest="error_resilience zlib"
1934 tak_decoder_select="dsputil"
1935 theora_decoder_select="vp3_decoder"
1936 tiff_decoder_suggest="zlib"
1937 tiff_encoder_suggest="zlib"
1938 thp_decoder_select="dsputil hpeldsp exif"
1939 truehd_decoder_select="mlp_parser"
1940 truemotion2_decoder_select="dsputil"
1941 truespeech_decoder_select="dsputil"
1942 tscc_decoder_select="zlib"
1943 twinvq_decoder_select="mdct lsp sinewin"
1944 utvideo_decoder_select="dsputil"
1945 utvideo_encoder_select="dsputil huffman"
1946 vble_decoder_select="dsputil"
1947 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1948 vc1image_decoder_select="vc1_decoder"
1949 vorbis_decoder_select="mdct"
1950 vorbis_encoder_select="mdct"
1951 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1952 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1953 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1954 vp6a_decoder_select="vp6_decoder"
1955 vp6f_decoder_select="vp6_decoder"
1956 vp8_decoder_select="h264pred videodsp"
1957 vp9_decoder_select="videodsp"
1958 webp_decoder_select="vp8_decoder"
1959 wmapro_decoder_select="mdct sinewin"
1960 wmav1_decoder_select="mdct sinewin"
1961 wmav1_encoder_select="mdct sinewin"
1962 wmav2_decoder_select="mdct sinewin"
1963 wmav2_encoder_select="mdct sinewin"
1964 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1965 wmv1_decoder_select="h263_decoder"
1966 wmv1_encoder_select="h263_encoder"
1967 wmv2_decoder_select="h263_decoder videodsp"
1968 wmv2_encoder_select="h263_encoder"
1969 wmv3_decoder_select="vc1_decoder"
1970 wmv3image_decoder_select="wmv3_decoder"
1971 zerocodec_decoder_select="zlib"
1972 zlib_decoder_select="zlib"
1973 zlib_encoder_select="zlib"
1974 zmbv_decoder_select="zlib"
1975 zmbv_encoder_select="zlib"
1976
1977 # hardware accelerators
1978 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1979 dxva2_deps="dxva2api_h"
1980 vaapi_deps="va_va_h"
1981 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1982 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1983 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1984
1985 h263_vaapi_hwaccel_deps="vaapi"
1986 h263_vaapi_hwaccel_select="h263_decoder"
1987 h263_vdpau_hwaccel_deps="vdpau"
1988 h263_vdpau_hwaccel_select="h263_decoder"
1989 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1990 h264_dxva2_hwaccel_deps="dxva2"
1991 h264_dxva2_hwaccel_select="h264_decoder"
1992 h264_vaapi_hwaccel_deps="vaapi"
1993 h264_vaapi_hwaccel_select="h264_decoder"
1994 h264_vda_decoder_deps="vda"
1995 h264_vda_decoder_select="h264_decoder"
1996 h264_vda_hwaccel_deps="vda"
1997 h264_vda_hwaccel_select="h264_decoder"
1998 h264_vdpau_decoder_deps="vdpau"
1999 h264_vdpau_decoder_select="h264_decoder"
2000 h264_vdpau_hwaccel_deps="vdpau"
2001 h264_vdpau_hwaccel_select="h264_decoder"
2002 mpeg_vdpau_decoder_deps="vdpau"
2003 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2004 mpeg1_vdpau_decoder_deps="vdpau"
2005 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2006 mpeg1_vdpau_hwaccel_deps="vdpau"
2007 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2008 mpeg2_crystalhd_decoder_select="crystalhd"
2009 mpeg2_dxva2_hwaccel_deps="dxva2"
2010 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2011 mpeg2_vaapi_hwaccel_deps="vaapi"
2012 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2013 mpeg2_vdpau_hwaccel_deps="vdpau"
2014 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2015 mpeg4_crystalhd_decoder_select="crystalhd"
2016 mpeg4_vaapi_hwaccel_deps="vaapi"
2017 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2018 mpeg4_vdpau_decoder_deps="vdpau"
2019 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2020 mpeg4_vdpau_hwaccel_deps="vdpau"
2021 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2022 msmpeg4_crystalhd_decoder_select="crystalhd"
2023 vc1_crystalhd_decoder_select="crystalhd"
2024 vc1_dxva2_hwaccel_deps="dxva2"
2025 vc1_dxva2_hwaccel_select="vc1_decoder"
2026 vc1_vaapi_hwaccel_deps="vaapi"
2027 vc1_vaapi_hwaccel_select="vc1_decoder"
2028 vc1_vdpau_decoder_deps="vdpau"
2029 vc1_vdpau_decoder_select="vc1_decoder"
2030 vc1_vdpau_hwaccel_deps="vdpau"
2031 vc1_vdpau_hwaccel_select="vc1_decoder"
2032 wmv3_crystalhd_decoder_select="crystalhd"
2033 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2034 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2035 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2036 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2037
2038 # parsers
2039 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2040 hevc_parser_select="hevc_decoder"
2041 mpeg4video_parser_select="error_resilience mpegvideo"
2042 mpegvideo_parser_select="error_resilience mpegvideo"
2043 vc1_parser_select="mpegvideo"
2044
2045 # external libraries
2046 libaacplus_encoder_deps="libaacplus"
2047 libcelt_decoder_deps="libcelt"
2048 libfaac_encoder_deps="libfaac"
2049 libfaac_encoder_select="audio_frame_queue"
2050 libfdk_aac_decoder_deps="libfdk_aac"
2051 libfdk_aac_encoder_deps="libfdk_aac"
2052 libfdk_aac_encoder_select="audio_frame_queue"
2053 libgme_demuxer_deps="libgme"
2054 libgsm_decoder_deps="libgsm"
2055 libgsm_encoder_deps="libgsm"
2056 libgsm_ms_decoder_deps="libgsm"
2057 libgsm_ms_encoder_deps="libgsm"
2058 libilbc_decoder_deps="libilbc"
2059 libilbc_encoder_deps="libilbc"
2060 libmodplug_demuxer_deps="libmodplug"
2061 libmp3lame_encoder_deps="libmp3lame"
2062 libmp3lame_encoder_select="audio_frame_queue"
2063 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2064 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2065 libopencore_amrnb_encoder_select="audio_frame_queue"
2066 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2067 libopenjpeg_decoder_deps="libopenjpeg"
2068 libopenjpeg_encoder_deps="libopenjpeg"
2069 libopus_decoder_deps="libopus"
2070 libopus_encoder_deps="libopus"
2071 libopus_encoder_select="audio_frame_queue"
2072 libquvi_demuxer_deps="libquvi"
2073 libschroedinger_decoder_deps="libschroedinger"
2074 libschroedinger_encoder_deps="libschroedinger"
2075 libshine_encoder_deps="libshine"
2076 libshine_encoder_select="audio_frame_queue"
2077 libspeex_decoder_deps="libspeex"
2078 libspeex_encoder_deps="libspeex"
2079 libspeex_encoder_select="audio_frame_queue"
2080 libstagefright_h264_decoder_deps="libstagefright_h264"
2081 libtheora_encoder_deps="libtheora"
2082 libtwolame_encoder_deps="libtwolame"
2083 libvo_aacenc_encoder_deps="libvo_aacenc"
2084 libvo_aacenc_encoder_select="audio_frame_queue"
2085 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2086 libvorbis_decoder_deps="libvorbis"
2087 libvorbis_encoder_deps="libvorbis"
2088 libvorbis_encoder_select="audio_frame_queue"
2089 libvpx_vp8_decoder_deps="libvpx"
2090 libvpx_vp8_encoder_deps="libvpx"
2091 libvpx_vp9_decoder_deps="libvpx"
2092 libvpx_vp9_encoder_deps="libvpx"
2093 libwavpack_encoder_deps="libwavpack"
2094 libx264_encoder_deps="libx264"
2095 libx264rgb_encoder_deps="libx264"
2096 libxavs_encoder_deps="libxavs"
2097 libxvid_encoder_deps="libxvid"
2098 libutvideo_decoder_deps="libutvideo"
2099 libutvideo_encoder_deps="libutvideo"
2100 libzvbi_teletext_decoder_deps="libzvbi"
2101
2102 # demuxers / muxers
2103 ac3_demuxer_select="ac3_parser"
2104 asf_demuxer_select="riffdec"
2105 asf_muxer_select="riffenc"
2106 asf_stream_muxer_select="asf_muxer"
2107 avi_demuxer_select="riffdec"
2108 avi_muxer_select="riffenc"
2109 avisynth_demuxer_deps="avisynth"
2110 avisynth_demuxer_select="riffdec"
2111 caf_demuxer_select="riffdec"
2112 dirac_demuxer_select="dirac_parser"
2113 dts_demuxer_select="dca_parser"
2114 dtshd_demuxer_select="dca_parser"
2115 dxa_demuxer_select="riffdec"
2116 eac3_demuxer_select="ac3_parser"
2117 f4v_muxer_select="mov_muxer"
2118 flac_demuxer_select="flac_parser"
2119 hls_muxer_select="mpegts_muxer"
2120 ipod_muxer_select="mov_muxer"
2121 ismv_muxer_select="mov_muxer"
2122 libnut_demuxer_deps="libnut"
2123 libnut_muxer_deps="libnut"
2124 matroska_audio_muxer_select="matroska_muxer"
2125 matroska_demuxer_select="riffdec"
2126 matroska_demuxer_suggest="bzlib lzo zlib"
2127 matroska_muxer_select="riffenc"
2128 mmf_muxer_select="riffenc"
2129 mov_demuxer_select="riffdec"
2130 mov_demuxer_suggest="zlib"
2131 mov_muxer_select="riffenc rtpenc_chain"
2132 mp3_demuxer_select="mpegaudio_parser"
2133 mp4_muxer_select="mov_muxer"
2134 mpegts_muxer_select="adts_muxer latm_muxer"
2135 mpegtsraw_demuxer_select="mpegts_demuxer"
2136 mxf_d10_muxer_select="mxf_muxer"
2137 nut_muxer_select="riffenc"
2138 nuv_demuxer_select="riffdec"
2139 ogg_demuxer_select="golomb"
2140 psp_muxer_select="mov_muxer"
2141 rtp_demuxer_select="sdp_demuxer"
2142 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2143 rtsp_demuxer_select="http_protocol rtpdec"
2144 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2145 sap_demuxer_select="sdp_demuxer"
2146 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2147 sdp_demuxer_select="rtpdec"
2148 smoothstreaming_muxer_select="ismv_muxer"
2149 spdif_muxer_select="aac_parser"
2150 tak_demuxer_select="tak_parser"
2151 tg2_muxer_select="mov_muxer"
2152 tgp_muxer_select="mov_muxer"
2153 vobsub_demuxer_select="mpegps_demuxer"
2154 w64_demuxer_select="wav_demuxer"
2155 w64_muxer_select="wav_muxer"
2156 wav_demuxer_select="riffdec"
2157 wav_muxer_select="riffenc"
2158 webm_muxer_select="riffenc"
2159 wtv_demuxer_select="riffdec"
2160 xmv_demuxer_select="riffdec"
2161 xwma_demuxer_select="riffdec"
2162
2163 # indevs / outdevs
2164 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2165 alsa_outdev_deps="alsa_asoundlib_h"
2166 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2167 caca_outdev_deps="libcaca"
2168 dshow_indev_deps="IBaseFilter"
2169 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2170 dv1394_indev_deps="dv1394"
2171 dv1394_indev_select="dv_demuxer"
2172 fbdev_indev_deps="linux_fb_h"
2173 fbdev_outdev_deps="linux_fb_h"
2174 iec61883_indev_deps="libiec61883"
2175 jack_indev_deps="jack_jack_h sem_timedwait"
2176 lavfi_indev_deps="avfilter"
2177 libcdio_indev_deps="libcdio"
2178 libdc1394_indev_deps="libdc1394"
2179 libv4l2_indev_deps="libv4l2"
2180 openal_indev_deps="openal"
2181 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2182 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2183 pulse_indev_deps="libpulse"
2184 pulse_outdev_deps="libpulse"
2185 sdl_outdev_deps="sdl"
2186 sndio_indev_deps="sndio_h"
2187 sndio_outdev_deps="sndio_h"
2188 v4l_indev_deps="linux_videodev_h"
2189 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2190 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2191 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2192 vfwcap_indev_extralibs="-lavicap32"
2193 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2194 xv_outdev_extralibs="-lXv -lX11 -lXext"
2195 x11grab_indev_deps="x11grab"
2196
2197 # protocols
2198 bluray_protocol_deps="libbluray"
2199 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2200 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2201 ffrtmpcrypt_protocol_select="tcp_protocol"
2202 ffrtmphttp_protocol_deps="!librtmp_protocol"
2203 ffrtmphttp_protocol_select="http_protocol"
2204 ftp_protocol_select="tcp_protocol"
2205 gopher_protocol_select="network"
2206 httpproxy_protocol_select="tcp_protocol"
2207 http_protocol_select="tcp_protocol"
2208 https_protocol_select="tls_protocol"
2209 librtmp_protocol_deps="librtmp"
2210 librtmpe_protocol_deps="librtmp"
2211 librtmps_protocol_deps="librtmp"
2212 librtmpt_protocol_deps="librtmp"
2213 librtmpte_protocol_deps="librtmp"
2214 libssh_protocol_deps="libssh"
2215 mmsh_protocol_select="http_protocol"
2216 mmst_protocol_select="network"
2217 rtmp_protocol_deps="!librtmp_protocol"
2218 rtmp_protocol_select="tcp_protocol"
2219 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2220 rtmps_protocol_deps="!librtmp_protocol"
2221 rtmps_protocol_select="tls_protocol"
2222 rtmpt_protocol_select="ffrtmphttp_protocol"
2223 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2224 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2225 rtp_protocol_select="udp_protocol"
2226 sctp_protocol_deps="struct_sctp_event_subscribe"
2227 sctp_protocol_select="network"
2228 srtp_protocol_select="rtp_protocol"
2229 tcp_protocol_select="network"
2230 tls_protocol_deps_any="openssl gnutls"
2231 tls_protocol_select="tcp_protocol"
2232 udp_protocol_select="network"
2233 unix_protocol_deps="sys_un_h"
2234 unix_protocol_select="network"
2235
2236 # filters
2237 aconvert_filter_deps="swresample"
2238 amovie_filter_deps="avcodec avformat"
2239 aresample_filter_deps="swresample"
2240 ass_filter_deps="libass"
2241 asyncts_filter_deps="avresample"
2242 atempo_filter_deps="avcodec"
2243 atempo_filter_select="rdft"
2244 azmq_filter_deps="libzmq"
2245 blackframe_filter_deps="gpl"
2246 boxblur_filter_deps="gpl"
2247 colormatrix_filter_deps="gpl"
2248 cropdetect_filter_deps="gpl"
2249 dctdnoiz_filter_deps="avcodec"
2250 dctdnoiz_filter_select="fft"
2251 delogo_filter_deps="gpl"
2252 deshake_filter_deps="avcodec"
2253 deshake_filter_select="dsputil"
2254 drawtext_filter_deps="libfreetype"
2255 ebur128_filter_deps="gpl"
2256 flite_filter_deps="libflite"
2257 frei0r_filter_deps="frei0r dlopen"
2258 frei0r_filter_extralibs='$ldl'
2259 frei0r_src_filter_deps="frei0r dlopen"
2260 frei0r_src_filter_extralibs='$ldl'
2261 geq_filter_deps="gpl"
2262 histeq_filter_deps="gpl"
2263 hqdn3d_filter_deps="gpl"
2264 interlace_filter_deps="gpl"
2265 kerndeint_filter_deps="gpl"
2266 ladspa_filter_deps="ladspa dlopen"
2267 mcdeint_filter_deps="avcodec gpl"
2268 movie_filter_deps="avcodec avformat"
2269 mp_filter_deps="gpl avcodec swscale inline_asm"
2270 mpdecimate_filter_deps="gpl avcodec"
2271 mptestsrc_filter_deps="gpl"
2272 negate_filter_deps="lut_filter"
2273 perspective_filter_deps="gpl"
2274 resample_filter_deps="avresample"
2275 ocv_filter_deps="libopencv"
2276 owdenoise_filter_deps="gpl"
2277 pan_filter_deps="swresample"
2278 phase_filter_deps="gpl"
2279 pp_filter_deps="gpl postproc"
2280 pullup_filter_deps="gpl"
2281 removelogo_filter_deps="avcodec avformat swscale"
2282 sab_filter_deps="gpl swscale"
2283 scale_filter_deps="swscale"
2284 smartblur_filter_deps="gpl swscale"
2285 showspectrum_filter_deps="avcodec"
2286 showspectrum_filter_select="rdft"
2287 spp_filter_deps="gpl avcodec"
2288 spp_filter_select="fft"
2289 stereo3d_filter_deps="gpl"
2290 subtitles_filter_deps="avformat avcodec libass"
2291 super2xsai_filter_deps="gpl"
2292 tinterlace_filter_deps="gpl"
2293 vidstabdetect_filter_deps="libvidstab"
2294 vidstabtransform_filter_deps="libvidstab"
2295 yadif_filter_deps="gpl"
2296 pixfmts_super2xsai_test_deps="super2xsai_filter"
2297 tinterlace_merge_test_deps="tinterlace_filter"
2298 tinterlace_pad_test_deps="tinterlace_filter"
2299 zmq_filter_deps="libzmq"
2300
2301 # libraries
2302 avcodec_deps="avutil"
2303 avdevice_deps="avutil avcodec avformat"
2304 avfilter_deps="avutil"
2305 avformat_deps="avutil avcodec"
2306 avresample_deps="avutil"
2307 postproc_deps="avutil gpl"
2308 swscale_deps="avutil"
2309
2310 # programs
2311 ffmpeg_deps="avcodec avfilter avformat swresample"
2312 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2313                null_filter
2314                setpts_filter trim_filter"
2315 ffplay_deps="avcodec avformat swscale swresample sdl"
2316 ffplay_select="rdft crop_filter"
2317 ffprobe_deps="avcodec avformat"
2318 ffserver_deps="avformat fork sarestart"
2319 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2320 ffserver_extralibs='$ldl'
2321
2322 # documentation
2323 podpages_deps="perl"
2324 manpages_deps="perl pod2man"
2325 htmlpages_deps="texi2html"
2326 txtpages_deps="makeinfo"
2327 doc_deps_any="manpages htmlpages podpages txtpages"
2328
2329 # default parameters
2330
2331 logfile="config.log"
2332
2333 # installation paths
2334 prefix_default="/usr/local"
2335 bindir_default='${prefix}/bin'
2336 datadir_default='${prefix}/share/ffmpeg'
2337 docdir_default='${prefix}/share/doc/ffmpeg'
2338 incdir_default='${prefix}/include'
2339 libdir_default='${prefix}/lib'
2340 mandir_default='${prefix}/share/man'
2341 shlibdir_default="$libdir_default"
2342
2343 # toolchain
2344 ar_default="ar"
2345 cc_default="gcc"
2346 cxx_default="g++"
2347 host_cc_default="gcc"
2348 cp_f="cp -f"
2349 install="install"
2350 ln_s="ln -s -f"
2351 nm_default="nm -g"
2352 objformat="elf"
2353 pkg_config_default=pkg-config
2354 ranlib="ranlib"
2355 strip_default="strip"
2356 yasmexe_default="yasm"
2357
2358 nogas=":"
2359
2360 # machine
2361 arch_default=$(uname -m)
2362 cpu="generic"
2363
2364 # OS
2365 target_os_default=$(tolower $(uname -s))
2366 host_os=$target_os_default
2367
2368 # configurable options
2369 enable $PROGRAM_LIST
2370 enable $DOCUMENT_LIST
2371 enable $(filter_out avresample $LIBRARY_LIST)
2372 enable stripping
2373
2374 enable asm
2375 enable debug
2376 enable doc
2377 enable optimizations
2378 enable runtime_cpudetect
2379 enable safe_bitstream_reader
2380 enable static
2381 enable swscale_alpha
2382
2383 # Enable hwaccels by default.
2384 enable dxva2 vaapi vdpau
2385
2386 # build settings
2387 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2388 LIBPREF="lib"
2389 LIBSUF=".a"
2390 FULLNAME='$(NAME)$(BUILDSUF)'
2391 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2392 SLIBPREF="lib"
2393 SLIBSUF=".so"
2394 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2395 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2396 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2397 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2398 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2399 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2400
2401 asflags_filter=echo
2402 cflags_filter=echo
2403 ldflags_filter=echo
2404
2405 AS_C='-c'
2406 AS_O='-o $@'
2407 CC_C='-c'
2408 CC_E='-E -o $@'
2409 CC_O='-o $@'
2410 CXX_C='-c'
2411 CXX_O='-o $@'
2412 LD_O='-o $@'
2413 LD_LIB='-l%'
2414 LD_PATH='-L'
2415 HOSTCC_C='-c'
2416 HOSTCC_O='-o $@'
2417 HOSTLD_O='-o $@'
2418
2419 host_cflags='-O3 -g'
2420 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2421 host_libs='-lm'
2422 host_cflags_filter=echo
2423 host_ldflags_filter=echo
2424
2425 target_path='$(CURDIR)'
2426
2427 # since the object filename is not given with the -MM flag, the compiler
2428 # is only able to print the basename, and we must add the path ourselves
2429 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2430 DEPFLAGS='-MM'
2431
2432 # find source path
2433 if test -f configure; then
2434     source_path=.
2435 else
2436     source_path=$(cd $(dirname "$0"); pwd)
2437     echo "$source_path" | grep -q '[[:blank:]]' &&
2438         die "Out of tree builds are impossible with whitespace in source path."
2439     test -e "$source_path/config.h" &&
2440         die "Out of tree builds are impossible with config.h in source dir."
2441 fi
2442
2443 for v in "$@"; do
2444     r=${v#*=}
2445     l=${v%"$r"}
2446     r=$(sh_quote "$r")
2447     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2448 done
2449
2450 find_things(){
2451     thing=$1
2452     pattern=$2
2453     file=$source_path/$3
2454     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2455 }
2456
2457 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2458 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2459 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2460 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2461 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2462 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2463 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2464 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2465 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2466 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2467 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2468
2469 ALL_COMPONENTS="
2470     $BSF_LIST
2471     $DECODER_LIST
2472     $DEMUXER_LIST
2473     $ENCODER_LIST
2474     $FILTER_LIST
2475     $HWACCEL_LIST
2476     $INDEV_LIST
2477     $MUXER_LIST
2478     $OUTDEV_LIST
2479     $PARSER_LIST
2480     $PROTOCOL_LIST
2481 "
2482
2483 for n in $COMPONENT_LIST; do
2484     v=$(toupper ${n%s})_LIST
2485     eval enable \$$v
2486     eval ${n}_if_any="\$$v"
2487 done
2488
2489 enable $ARCH_EXT_LIST
2490
2491 die_unknown(){
2492     echo "Unknown option \"$1\"."
2493     echo "See $0 --help for available options."
2494     exit 1
2495 }
2496
2497 print_3_columns() {
2498     cat | tr ' ' '\n' | sort | pr -r -3 -t
2499 }
2500
2501 show_list() {
2502     suffix=_$1
2503     shift
2504     echo $* | sed s/$suffix//g | print_3_columns
2505     exit 0
2506 }
2507
2508 rand_list(){
2509     IFS=', '
2510     set -- $*
2511     unset IFS
2512     for thing; do
2513         comp=${thing%:*}
2514         prob=${thing#$comp}
2515         prob=${prob#:}
2516         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2517         echo "prob ${prob:-0.5}"
2518         printf '%s\n' $comp
2519     done
2520 }
2521
2522 do_random(){
2523     action=$1
2524     shift
2525     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2526     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2527 }
2528
2529 for opt do
2530     optval="${opt#*=}"
2531     case "$opt" in
2532         --extra-ldflags=*)
2533             add_ldflags $optval
2534         ;;
2535         --extra-libs=*)
2536             add_extralibs $optval
2537         ;;
2538         --disable-devices)
2539             disable $INDEV_LIST $OUTDEV_LIST
2540         ;;
2541         --enable-debug=*)
2542             debuglevel="$optval"
2543         ;;
2544         --disable-programs)
2545             disable $PROGRAM_LIST
2546         ;;
2547         --disable-everything)
2548             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2549         ;;
2550         --disable-all)
2551             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2552             disable $LIBRARY_LIST $PROGRAM_LIST doc
2553         ;;
2554         --enable-random|--disable-random)
2555             action=${opt%%-random}
2556             do_random ${action#--} $COMPONENT_LIST
2557         ;;
2558         --enable-random=*|--disable-random=*)
2559             action=${opt%%-random=*}
2560             do_random ${action#--} $optval
2561         ;;
2562         --enable-*=*|--disable-*=*)
2563             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2564             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2565             eval list=\$$(toupper $thing)_LIST
2566             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2567             list=$(filter "$name" $list)
2568             [ "$list" = "" ] && warn "Option $opt did not match anything"
2569             $action $list
2570         ;;
2571         --enable-?*|--disable-?*)
2572             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2573             if is_in $option $COMPONENT_LIST; then
2574                 test $action = disable && action=unset
2575                 eval $action \$$(toupper ${option%s})_LIST
2576             elif is_in $option $CMDLINE_SELECT; then
2577                 $action $option
2578             else
2579                 die_unknown $opt
2580             fi
2581         ;;
2582         --list-*)
2583             NAME="${opt#--list-}"
2584             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2585             NAME=${NAME%s}
2586             eval show_list $NAME \$$(toupper $NAME)_LIST
2587         ;;
2588         --help|-h) show_help
2589         ;;
2590         --fatal-warnings) enable fatal_warnings
2591         ;;
2592         *)
2593             optname="${opt%%=*}"
2594             optname="${optname#--}"
2595             optname=$(echo "$optname" | sed 's/-/_/g')
2596             if is_in $optname $CMDLINE_SET; then
2597                 eval $optname='$optval'
2598             elif is_in $optname $CMDLINE_APPEND; then
2599                 append $optname "$optval"
2600             else
2601                 die_unknown $opt
2602             fi
2603         ;;
2604     esac
2605 done
2606
2607 disabled logging && logfile=/dev/null
2608
2609 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2610 set >> $logfile
2611
2612 test -n "$cross_prefix" && enable cross_compile
2613
2614 if enabled cross_compile; then
2615     test -n "$arch" && test -n "$target_os" ||
2616         die "Must specify target arch and OS when cross-compiling"
2617 fi
2618
2619 ar_default="${cross_prefix}${ar_default}"
2620 cc_default="${cross_prefix}${cc_default}"
2621 cxx_default="${cross_prefix}${cxx_default}"
2622 nm_default="${cross_prefix}${nm_default}"
2623 pkg_config_default="${cross_prefix}${pkg_config_default}"
2624 ranlib="${cross_prefix}${ranlib}"
2625 strip_default="${cross_prefix}${strip_default}"
2626
2627 sysinclude_default="${sysroot}/usr/include"
2628
2629 test -n "$valgrind" && toolchain="valgrind-memcheck"
2630
2631 case "$toolchain" in
2632     clang-asan)
2633         cc_default="clang"
2634         add_cflags  -fsanitize=address
2635         add_ldflags -fsanitize=address
2636     ;;
2637     clang-tsan)
2638         cc_default="clang"
2639         add_cflags  -fsanitize=thread -pie
2640         add_ldflags -fsanitize=thread -pie
2641     ;;
2642     gcc-asan)
2643         cc_default="gcc"
2644         add_cflags  -fsanitize=address
2645         add_ldflags -fsanitize=address
2646     ;;
2647     gcc-tsan)
2648         cc_default="gcc"
2649         add_cflags  -fsanitize=thread -pie -fPIC
2650         add_ldflags -fsanitize=thread -pie -fPIC
2651     ;;
2652     valgrind-massif)
2653         target_exec_default=${valgrind:-"valgrind"}
2654         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"
2655     ;;
2656     valgrind-memcheck)
2657         target_exec_default=${valgrind:-"valgrind"}
2658         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2659     ;;
2660     msvc)
2661         cc_default="c99wrap cl"
2662         ld_default="c99wrap link"
2663         nm_default="dumpbin -symbols"
2664         ar_default="lib"
2665         target_os_default="win32"
2666     ;;
2667     icl)
2668         cc_default="c99wrap -noconv icl"
2669         ld_default="c99wrap xilink"
2670         nm_default="dumpbin -symbols"
2671         ar_default="xilib"
2672         target_os_default="win32"
2673     ;;
2674     gcov)
2675         add_cflags  -fprofile-arcs -ftest-coverage
2676         add_ldflags -fprofile-arcs -ftest-coverage
2677     ;;
2678     ?*)
2679         die "Unknown toolchain $toolchain"
2680     ;;
2681 esac
2682
2683 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2684 enabled cross_compile || host_cc_default=$cc
2685 set_default host_cc
2686
2687 if ! $pkg_config --version >/dev/null 2>&1; then
2688     warn "$pkg_config not found, library detection may fail."
2689     pkg_config=false
2690 fi
2691
2692 exesuf() {
2693     case $1 in
2694         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2695     esac
2696 }
2697
2698 EXESUF=$(exesuf $target_os)
2699 HOSTEXESUF=$(exesuf $host_os)
2700
2701 # set temporary file name
2702 : ${TMPDIR:=$TEMPDIR}
2703 : ${TMPDIR:=$TMP}
2704 : ${TMPDIR:=/tmp}
2705
2706 if [ -n "$tempprefix" ] ; then
2707     mktemp(){
2708         echo $tempprefix.${HOSTNAME}.${UID}
2709     }
2710 elif ! check_cmd mktemp -u XXXXXX; then
2711     # simple replacement for missing mktemp
2712     # NOT SAFE FOR GENERAL USE
2713     mktemp(){
2714         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2715     }
2716 fi
2717
2718 tmpfile(){
2719     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2720         (set -C; exec > $tmp) 2>/dev/null ||
2721         die "Unable to create temporary file in $TMPDIR."
2722     append TMPFILES $tmp
2723     eval $1=$tmp
2724 }
2725
2726 trap 'rm -f -- $TMPFILES' EXIT
2727
2728 tmpfile TMPASM .asm
2729 tmpfile TMPC   .c
2730 tmpfile TMPCPP .cpp
2731 tmpfile TMPE   $EXESUF
2732 tmpfile TMPH   .h
2733 tmpfile TMPO   .o
2734 tmpfile TMPS   .S
2735 tmpfile TMPSH  .sh
2736 tmpfile TMPV   .ver
2737
2738 unset -f mktemp
2739
2740 chmod +x $TMPE
2741
2742 # make sure we can execute files in $TMPDIR
2743 cat > $TMPSH 2>> $logfile <<EOF
2744 #! /bin/sh
2745 EOF
2746 chmod +x $TMPSH >> $logfile 2>&1
2747 if ! $TMPSH >> $logfile 2>&1; then
2748     cat <<EOF
2749 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2750 variable to another directory and make sure that it is not mounted noexec.
2751 EOF
2752     die "Sanity test failed."
2753 fi
2754
2755 ccc_flags(){
2756     for flag; do
2757         case $flag in
2758             -std=c99)           echo -c99                       ;;
2759             -mcpu=*)            echo -arch ${flag#*=}           ;;
2760             -mieee)             echo -ieee                      ;;
2761             -O*|-fast)          echo $flag                      ;;
2762             -fno-math-errno)    echo -assume nomath_errno       ;;
2763             -g)                 echo -g3                        ;;
2764             -Wall)              echo -msg_enable level2         ;;
2765             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2766             -Wl,*)              echo $flag                      ;;
2767             -f*|-W*)                                            ;;
2768             *)                  echo $flag                      ;;
2769         esac
2770    done
2771 }
2772
2773 cparser_flags(){
2774     for flag; do
2775         case $flag in
2776             -Wno-switch)             echo -Wno-switch-enum ;;
2777             -Wno-format-zero-length) ;;
2778             -Wdisabled-optimization) ;;
2779             -Wno-pointer-sign)       echo -Wno-other ;;
2780             *)                       echo $flag ;;
2781         esac
2782     done
2783 }
2784
2785 msvc_common_flags(){
2786     for flag; do
2787         case $flag in
2788             # In addition to specifying certain flags under the compiler
2789             # specific filters, they must be specified here as well or else the
2790             # generic catch all at the bottom will print the original flag.
2791             -Wall)                ;;
2792             -std=c99)             ;;
2793             # Common flags
2794             -fomit-frame-pointer) ;;
2795             -g)                   echo -Z7 ;;
2796             -fno-math-errno)      ;;
2797             -fno-common)          ;;
2798             -fno-signed-zeros)    ;;
2799             -fPIC)                ;;
2800             -mthumb)              ;;
2801             -march=*)             ;;
2802             -lz)                  echo zlib.lib ;;
2803             -lavifil32)           echo vfw32.lib ;;
2804             -lavicap32)           echo vfw32.lib user32.lib ;;
2805             -l*)                  echo ${flag#-l}.lib ;;
2806             *)                    echo $flag ;;
2807         esac
2808     done
2809 }
2810
2811 msvc_flags(){
2812     msvc_common_flags "$@"
2813     for flag; do
2814         case $flag in
2815             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2816                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2817                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2818                                        -wd4554 \
2819                                        -wd4273 ;;
2820         esac
2821     done
2822 }
2823
2824 icl_flags(){
2825     msvc_common_flags "$@"
2826     for flag; do
2827         case $flag in
2828             # Despite what Intel's documentation says -Wall, which is supported
2829             # on Windows, does enable remarks so disable them here.
2830             -Wall)                echo $flag -Qdiag-disable:remark ;;
2831             -std=c99)             echo -Qstd=c99 ;;
2832         esac
2833     done
2834 }
2835
2836 pgi_flags(){
2837     for flag; do
2838         case $flag in
2839             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2840             -fomit-frame-pointer) echo -Mnoframe ;;
2841             -g)                   echo -gopt ;;
2842             *)                    echo $flag ;;
2843         esac
2844     done
2845 }
2846
2847 suncc_flags(){
2848     for flag; do
2849         case $flag in
2850             -march=*|-mcpu=*)
2851                 case "${flag#*=}" in
2852                     native)                   echo -xtarget=native       ;;
2853                     v9|niagara)               echo -xarch=sparc          ;;
2854                     ultrasparc)               echo -xarch=sparcvis       ;;
2855                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2856                     i586|pentium)             echo -xchip=pentium        ;;
2857                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2858                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2859                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2860                     pentium4*)          echo -xtarget=pentium4           ;;
2861                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2862                     *-sse3)             echo -xarch=sse3                 ;;
2863                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2864                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2865                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2866                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2867                     bdver*)                    echo -xarch=avx           ;;
2868                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2869                     k8|opteron|athlon64|athlon-fx)
2870                                                echo -xarch=sse2a         ;;
2871                     athlon*)                   echo -xarch=pentium_proa  ;;
2872                 esac
2873                 ;;
2874             -std=c99)             echo -xc99              ;;
2875             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2876             -fPIC)                echo -KPIC -xcode=pic32 ;;
2877             -W*,*)                echo $flag              ;;
2878             -f*-*|-W*|-mimpure-text)                      ;;
2879             -shared)              echo -G                 ;;
2880             *)                    echo $flag              ;;
2881         esac
2882     done
2883 }
2884
2885 tms470_flags(){
2886     for flag; do
2887         case $flag in
2888             -march=*|-mcpu=*)
2889                 case "${flag#*=}" in
2890                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2891                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2892                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2893                     armv6*|arm11*)          echo -mv=6   ;;
2894                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2895                                             echo -mv=5e  ;;
2896                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2897                 esac
2898                 ;;
2899             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2900             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2901             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2902             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2903             -msoft-float)   echo --float_support=vfplib       ;;
2904             -O[0-3]|-mf=*)  echo $flag                        ;;
2905             -g)             echo -g -mn                       ;;
2906             -pds=*)         echo $flag                        ;;
2907             -D*|-I*)        echo $flag                        ;;
2908             --gcc|--abi=*)  echo $flag                        ;;
2909             -me)            echo $flag                        ;;
2910         esac
2911     done
2912 }
2913
2914 probe_cc(){
2915     pfx=$1
2916     _cc=$2
2917
2918     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2919     unset _ld_o _ldflags _ld_lib _ld_path
2920     unset _depflags _DEPCMD _DEPFLAGS
2921     _flags_filter=echo
2922
2923     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2924         true # no-op to avoid reading stdin in following checks
2925     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2926         _type=llvm_gcc
2927         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2928         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2929         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2930         _cflags_speed='-O3'
2931         _cflags_size='-Os'
2932     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2933         _type=gcc
2934         gcc_version=$($_cc --version | head -n1)
2935         gcc_basever=$($_cc -dumpversion)
2936         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2937         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2938         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2939         if ! $_cc -dumpversion | grep -q '^2\.'; then
2940             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2941         fi
2942         _cflags_speed='-O3'
2943         _cflags_size='-Os'
2944     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2945         _type=icc
2946         _ident=$($_cc --version | head -n1)
2947         _depflags='-MMD'
2948         _cflags_speed='-O3'
2949         _cflags_size='-Os'
2950         _cflags_noopt='-O1'
2951     elif $_cc -v 2>&1 | grep -q xlc; then
2952         _type=xlc
2953         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2954         _cflags_speed='-O5'
2955         _cflags_size='-O5 -qcompact'
2956     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2957         _type=ccc
2958         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2959         _DEPFLAGS='-M'
2960         _cflags_speed='-fast'
2961         _cflags_size='-O1'
2962         _flags_filter=ccc_flags
2963     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2964         test -d "$sysroot" || die "No valid sysroot specified."
2965         _type=armcc
2966         _ident=$($_cc --vsn | head -n1)
2967         armcc_conf="$PWD/armcc.conf"
2968         $_cc --arm_linux_configure                 \
2969              --arm_linux_config_file="$armcc_conf" \
2970              --configure_sysroot="$sysroot"        \
2971              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2972              die "Error creating armcc configuration file."
2973         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2974         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2975         as_default="${cross_prefix}gcc"
2976         _depflags='-MMD'
2977         _cflags_speed='-O3'
2978         _cflags_size='-Os'
2979     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2980         _type=tms470
2981         _ident=$($_cc -version | head -n1 | tr -s ' ')
2982         _flags='--gcc --abi=eabi -me'
2983         _cc_e='-ppl -fe=$@'
2984         _cc_o='-fe=$@'
2985         _depflags='-ppa -ppd=$(@:.o=.d)'
2986         _cflags_speed='-O3 -mf=5'
2987         _cflags_size='-O3 -mf=2'
2988         _flags_filter=tms470_flags
2989     elif $_cc -v 2>&1 | grep -q clang; then
2990         _type=clang
2991         _ident=$($_cc --version | head -n1)
2992         _depflags='-MMD'
2993         _cflags_speed='-O3'
2994         _cflags_size='-Os'
2995     elif $_cc -V 2>&1 | grep -q Sun; then
2996         _type=suncc
2997         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2998         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2999         _DEPFLAGS='-xM1 -xc99'
3000         _ldflags='-std=c99'
3001         _cflags_speed='-O5'
3002         _cflags_size='-O5 -xspace'
3003         _flags_filter=suncc_flags
3004     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3005         _type=pathscale
3006         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3007         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3008         _cflags_speed='-O2'
3009         _cflags_size='-Os'
3010         _flags_filter='filter_out -Wdisabled-optimization'
3011     elif $_cc -v 2>&1 | grep -q Open64; then
3012         _type=open64
3013         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3014         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3015         _cflags_speed='-O2'
3016         _cflags_size='-Os'
3017         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3018     elif $_cc -V 2>&1 | grep -q Portland; then
3019         _type=pgi
3020         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3021         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3022         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3023         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3024         _cflags_noopt="-O"
3025         _flags_filter=pgi_flags
3026     elif $_cc 2>&1 | grep -q Microsoft; then
3027         _type=msvc
3028         _ident=$($cc 2>&1 | head -n1)
3029         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3030         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3031         _cflags_speed="-O2"
3032         _cflags_size="-O1"
3033         # Nonstandard output options, to avoid msys path conversion issues.
3034         # Relies on wrapper to remap it.
3035         if $_cc 2>&1 | grep -q Linker; then
3036             _ld_o='-out $@'
3037         else
3038             _ld_o='-Fe$@'
3039         fi
3040         _cc_o='-Fo $@'
3041         _cc_e='-P -Fi $@'
3042         _flags_filter=msvc_flags
3043         _ld_lib='lib%.a'
3044         _ld_path='-libpath:'
3045         _flags='-nologo'
3046         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3047         if [ $pfx = hostcc ]; then
3048             append _cflags -Dsnprintf=_snprintf
3049         fi
3050         disable stripping
3051     elif $_cc 2>&1 | grep -q Intel; then
3052         _type=icl
3053         _ident=$($cc 2>&1 | head -n1)
3054         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3055         # Not only is O3 broken on 13.x+ but it is slower on all previous
3056         # versions (tested) as well.
3057         _cflags_speed="-O2"
3058         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3059         # Nonstandard output options, to avoid msys path conversion issues.
3060         # Relies on wrapper to remap it.
3061         if $_cc 2>&1 | grep -q Linker; then
3062             _ld_o='-out $@'
3063         else
3064             _ld_o='-Fe$@'
3065         fi
3066         _cc_o='-Fo $@'
3067         _cc_e='-P'
3068         _flags_filter=icl_flags
3069         _ld_lib='lib%.a'
3070         _ld_path='-libpath:'
3071         # -Qdiag-error to make icl error when seeing certain unknown arguments
3072         _flags='-nologo -Qdiag-error:4044,10157'
3073         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3074         # with MSVC which enables it by default.
3075         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3076         if [ $pfx = hostcc ]; then
3077             append _cflags -Dsnprintf=_snprintf
3078         fi
3079     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3080         _type=cparser
3081         _ident=$($_cc --version | head -n1)
3082         _depflags='-MMD'
3083         _cflags_speed='-O4'
3084         _cflags_size='-O2'
3085         _flags_filter=cparser_flags
3086     fi
3087
3088     eval ${pfx}_type=\$_type
3089     eval ${pfx}_ident=\$_ident
3090 }
3091
3092 set_ccvars(){
3093     eval ${1}_C=\${_cc_c-\${${1}_C}}
3094     eval ${1}_E=\${_cc_e-\${${1}_E}}
3095     eval ${1}_O=\${_cc_o-\${${1}_O}}
3096
3097     if [ -n "$_depflags" ]; then
3098         eval ${1}_DEPFLAGS=\$_depflags
3099     else
3100         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3101         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3102         eval DEP${1}FLAGS=\$_flags
3103     fi
3104 }
3105
3106 probe_cc cc "$cc"
3107 cflags_filter=$_flags_filter
3108 cflags_speed=$_cflags_speed
3109 cflags_size=$_cflags_size
3110 cflags_noopt=$_cflags_noopt
3111 add_cflags $_flags $_cflags
3112 cc_ldflags=$_ldflags
3113 set_ccvars CC
3114
3115 probe_cc hostcc "$host_cc"
3116 host_cflags_filter=$_flags_filter
3117 add_host_cflags  $_flags $_cflags
3118 set_ccvars HOSTCC
3119
3120 test -n "$cc_type" && enable $cc_type ||
3121     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3122
3123 : ${as_default:=$cc}
3124 : ${dep_cc_default:=$cc}
3125 : ${ld_default:=$cc}
3126 : ${host_ld_default:=$host_cc}
3127 set_default ar as dep_cc ld host_ld
3128
3129 probe_cc as "$as"
3130 asflags_filter=$_flags_filter
3131 add_asflags $_flags $_cflags
3132 set_ccvars AS
3133
3134 probe_cc ld "$ld"
3135 ldflags_filter=$_flags_filter
3136 add_ldflags $_flags $_ldflags
3137 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3138 LD_O=${_ld_o-$LD_O}
3139 LD_LIB=${_ld_lib-$LD_LIB}
3140 LD_PATH=${_ld_path-$LD_PATH}
3141
3142 probe_cc hostld "$host_ld"
3143 host_ldflags_filter=$_flags_filter
3144 add_host_ldflags $_flags $_ldflags
3145 HOSTLD_O=${_ld_o-$HOSTLD_O}
3146
3147 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3148     probe_cc depcc "$dep_cc"
3149     CCDEP=${_DEPCMD:-$DEPCMD}
3150     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3151     DEPCCFLAGS=$_flags
3152 fi
3153
3154 if $ar 2>&1 | grep -q Microsoft; then
3155     arflags="-nologo"
3156     ar_o='-out:$@'
3157 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3158     arflags="rq"
3159     ar_o='$@'
3160 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3161     arflags='-Xany -r -c'
3162     ar_o='$@'
3163 else
3164     arflags="rc"
3165     ar_o='$@'
3166 fi
3167
3168 add_cflags $extra_cflags
3169 add_cxxflags $extra_cxxflags
3170 add_asflags $extra_cflags
3171
3172 if test -n "$sysroot"; then
3173     case "$cc_type" in
3174         gcc|llvm_gcc|clang)
3175             add_cppflags --sysroot="$sysroot"
3176             add_ldflags --sysroot="$sysroot"
3177         ;;
3178         tms470)
3179             add_cppflags -I"$sysinclude"
3180             add_ldflags  --sysroot="$sysroot"
3181         ;;
3182     esac
3183 fi
3184
3185 if test "$cpu" = host; then
3186     enabled cross_compile &&
3187         die "--cpu=host makes no sense when cross-compiling."
3188
3189     case "$cc_type" in
3190         gcc|llvm_gcc)
3191             check_native(){
3192                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3193                 sed -n "/cc1.*$1=/{
3194                             s/.*$1=\\([^ ]*\\).*/\\1/
3195                             p
3196                             q
3197                         }" $TMPE
3198             }
3199             cpu=$(check_native -march || check_native -mcpu)
3200         ;;
3201     esac
3202
3203     test "${cpu:-host}" = host &&
3204         die "--cpu=host not supported with compiler $cc"
3205 fi
3206
3207 # Deal with common $arch aliases
3208 case "$arch" in
3209     aarch64|arm64)
3210         arch="aarch64"
3211     ;;
3212     arm*|iPad*|iPhone*)
3213         arch="arm"
3214     ;;
3215     mips*|IP*)
3216         arch="mips"
3217     ;;
3218     parisc*|hppa*)
3219         arch="parisc"
3220     ;;
3221     "Power Macintosh"|ppc*|powerpc*)
3222         arch="ppc"
3223     ;;
3224     s390|s390x)
3225         arch="s390"
3226     ;;
3227     sh4|sh)
3228         arch="sh4"
3229     ;;
3230     sun4u|sparc*)
3231         arch="sparc"
3232     ;;
3233     tilegx|tile-gx)
3234         arch="tilegx"
3235     ;;
3236     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3237         arch="x86"
3238     ;;
3239 esac
3240
3241 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3242 enable $arch
3243
3244 # Add processor-specific flags
3245 if enabled aarch64; then
3246
3247     case $cpu in
3248         armv*)
3249             cpuflags="-march=$cpu"
3250         ;;
3251         *)
3252             cpuflags="-mcpu=$cpu"
3253         ;;
3254     esac
3255
3256 elif enabled alpha; then
3257
3258     cpuflags="-mcpu=$cpu"
3259
3260 elif enabled arm; then
3261
3262     check_arm_arch() {
3263         check_cpp_condition stddef.h \
3264             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3265             $cpuflags
3266     }
3267
3268     probe_arm_arch() {
3269         if   check_arm_arch 4;        then echo armv4;
3270         elif check_arm_arch 4T;       then echo armv4t;
3271         elif check_arm_arch 5;        then echo armv5;
3272         elif check_arm_arch 5E;       then echo armv5e;
3273         elif check_arm_arch 5T;       then echo armv5t;
3274         elif check_arm_arch 5TE;      then echo armv5te;
3275         elif check_arm_arch 5TEJ;     then echo armv5te;
3276         elif check_arm_arch 6;        then echo armv6;
3277         elif check_arm_arch 6J;       then echo armv6j;
3278         elif check_arm_arch 6K;       then echo armv6k;
3279         elif check_arm_arch 6Z;       then echo armv6z;
3280         elif check_arm_arch 6ZK;      then echo armv6zk;
3281         elif check_arm_arch 6T2;      then echo armv6t2;
3282         elif check_arm_arch 7;        then echo armv7;
3283         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3284         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3285         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3286         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3287         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3288         fi
3289     }
3290
3291     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3292
3293     case $cpu in
3294         armv*)
3295             cpuflags="-march=$cpu"
3296             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3297         ;;
3298         *)
3299             cpuflags="-mcpu=$cpu"
3300             case $cpu in
3301                 cortex-a*)                               subarch=armv7a  ;;
3302                 cortex-r*)                               subarch=armv7r  ;;
3303                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3304                 arm11*)                                  subarch=armv6   ;;
3305                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3306                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3307                 *)                             subarch=$(probe_arm_arch) ;;
3308             esac
3309         ;;
3310     esac
3311
3312     case "$subarch" in
3313         armv5t*)    enable fast_clz                ;;
3314         armv[6-8]*) enable fast_clz fast_unaligned ;;
3315     esac
3316
3317 elif enabled avr32; then
3318
3319     case $cpu in
3320         ap7[02]0[0-2])
3321             subarch="avr32_ap"
3322             cpuflags="-mpart=$cpu"
3323         ;;
3324         ap)
3325             subarch="avr32_ap"
3326             cpuflags="-march=$cpu"
3327         ;;
3328         uc3[ab]*)
3329             subarch="avr32_uc"
3330             cpuflags="-mcpu=$cpu"
3331         ;;
3332         uc)
3333             subarch="avr32_uc"
3334             cpuflags="-march=$cpu"
3335         ;;
3336     esac
3337
3338 elif enabled bfin; then
3339
3340     cpuflags="-mcpu=$cpu"
3341
3342 elif enabled mips; then
3343
3344     cpuflags="-march=$cpu"
3345
3346     case $cpu in
3347         24kc)
3348             disable mipsfpu
3349             disable mipsdspr1
3350             disable mipsdspr2
3351         ;;
3352         24kf*)
3353             disable mipsdspr1
3354             disable mipsdspr2
3355         ;;
3356         24kec|34kc|1004kc)
3357             disable mipsfpu
3358             disable mipsdspr2
3359         ;;
3360         24kef*|34kf*|1004kf*)
3361             disable mipsdspr2
3362         ;;
3363         74kc)
3364             disable mipsfpu
3365         ;;
3366     esac
3367
3368 elif enabled ppc; then
3369
3370     case $(tolower $cpu) in
3371         601|ppc601|powerpc601)
3372             cpuflags="-mcpu=601"
3373             disable altivec
3374         ;;
3375         603*|ppc603*|powerpc603*)
3376             cpuflags="-mcpu=603"
3377             disable altivec
3378         ;;
3379         604*|ppc604*|powerpc604*)
3380             cpuflags="-mcpu=604"
3381             disable altivec
3382         ;;
3383         g3|75*|ppc75*|powerpc75*)
3384             cpuflags="-mcpu=750"
3385             disable altivec
3386         ;;
3387         g4|745*|ppc745*|powerpc745*)
3388             cpuflags="-mcpu=7450"
3389         ;;
3390         74*|ppc74*|powerpc74*)
3391             cpuflags="-mcpu=7400"
3392         ;;
3393         g5|970|ppc970|powerpc970)
3394             cpuflags="-mcpu=970"
3395         ;;
3396         power[3-7]*)
3397             cpuflags="-mcpu=$cpu"
3398         ;;
3399         cell)
3400             cpuflags="-mcpu=cell"
3401             enable ldbrx
3402         ;;
3403         e500mc)
3404             cpuflags="-mcpu=e500mc"
3405             disable altivec
3406         ;;
3407         e500v2)
3408             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3409             disable altivec
3410         ;;
3411         e500)
3412             cpuflags="-mcpu=8540 -mhard-float"
3413             disable altivec
3414         ;;
3415     esac
3416
3417 elif enabled sparc; then
3418
3419     case $cpu in
3420         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3421             cpuflags="-mcpu=$cpu"
3422             disable vis
3423         ;;
3424         ultrasparc*|niagara[234])
3425             cpuflags="-mcpu=$cpu"
3426         ;;
3427     esac
3428
3429 elif enabled x86; then
3430
3431     case $cpu in
3432         i[345]86|pentium)
3433             cpuflags="-march=$cpu"
3434             disable mmx
3435         ;;
3436         # targets that do NOT support nopl and conditional mov (cmov)
3437         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3438             cpuflags="-march=$cpu"
3439             disable i686
3440         ;;
3441         # targets that do support nopl and conditional mov (cmov)
3442         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3443             cpuflags="-march=$cpu"
3444             enable i686
3445             enable fast_cmov
3446         ;;
3447         # targets that do support conditional mov but on which it's slow
3448         pentium4|pentium4m|prescott|nocona)
3449             cpuflags="-march=$cpu"
3450             enable i686
3451             disable fast_cmov
3452         ;;
3453     esac
3454
3455 fi
3456
3457 if [ "$cpu" != generic ]; then
3458     add_cflags  $cpuflags
3459     add_asflags $cpuflags
3460 fi
3461
3462 # compiler sanity check
3463 check_exec <<EOF
3464 int main(void){ return 0; }
3465 EOF
3466 if test "$?" != 0; then
3467     echo "$cc is unable to create an executable file."
3468     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3469         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3470         echo "Only do this if you know what cross compiling means."
3471     fi
3472     die "C compiler test failed."
3473 fi
3474
3475 add_cppflags -D_ISOC99_SOURCE
3476 add_cxxflags -D__STDC_CONSTANT_MACROS
3477 check_cflags -std=c99
3478 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3479 #include <stdlib.h>
3480 EOF
3481 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3482 #include <stdlib.h>
3483 EOF
3484
3485 check_host_cflags -std=c99
3486 check_host_cflags -Wall
3487
3488 check_64bit(){
3489     arch32=$1
3490     arch64=$2
3491     expr=$3
3492     check_code cc "" "int test[2*($expr) - 1]" &&
3493         subarch=$arch64 || subarch=$arch32
3494 }
3495
3496 case "$arch" in
3497     aarch64|alpha|ia64)
3498         spic=$shared
3499     ;;
3500     mips)
3501         check_64bit mips mips64 '_MIPS_SIM > 1'
3502         spic=$shared
3503     ;;
3504     parisc)
3505         check_64bit parisc parisc64 'sizeof(void *) > 4'
3506         spic=$shared
3507     ;;
3508     ppc)
3509         check_64bit ppc ppc64 'sizeof(void *) > 4'
3510         spic=$shared
3511     ;;
3512     sparc)
3513         check_64bit sparc sparc64 'sizeof(void *) > 4'
3514         spic=$shared
3515     ;;
3516     x86)
3517         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3518         if test "$subarch" = "x86_64"; then
3519             spic=$shared
3520         fi
3521     ;;
3522     ppc)
3523         check_cc <<EOF && subarch="ppc64"
3524         int test[(int)sizeof(char*) - 7];
3525 EOF
3526     ;;
3527 esac
3528
3529 enable $subarch
3530 enabled spic && enable_weak pic
3531
3532 # OS specific
3533 case $target_os in
3534     aix)
3535         SHFLAGS=-shared
3536         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3537         enabled shared && add_ldflags -Wl,-brtl
3538         ;;
3539     haiku)
3540         prefix_default="/boot/common"
3541         network_extralibs="-lnetwork"
3542         host_libs=
3543         ;;
3544     sunos)
3545         SHFLAGS='-shared -Wl,-h,$$(@F)'
3546         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3547         network_extralibs="-lsocket -lnsl"
3548         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3549         # When using suncc to build, the Solaris linker will mark
3550         # an executable with each instruction set encountered by
3551         # the Solaris assembler.  As our libraries contain their own
3552         # guards for processor-specific code, instead suppress
3553         # generation of the HWCAPS ELF section on Solaris x86 only.
3554         enabled_all suncc x86 &&
3555             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3556             add_ldflags -Wl,-M,mapfile
3557         nm_default='nm -P -g'
3558         ;;
3559     netbsd)
3560         disable symver
3561         oss_indev_extralibs="-lossaudio"
3562         oss_outdev_extralibs="-lossaudio"
3563         enabled gcc || check_ldflags -Wl,-zmuldefs
3564         ;;
3565     openbsd|bitrig)
3566         disable symver
3567         SHFLAGS='-shared'
3568         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3569         SLIB_INSTALL_LINKS=
3570         oss_indev_extralibs="-lossaudio"
3571         oss_outdev_extralibs="-lossaudio"
3572         ;;
3573     dragonfly)
3574         disable symver
3575         ;;
3576     freebsd)
3577         ;;
3578     bsd/os)
3579         add_extralibs -lpoll -lgnugetopt
3580         strip="strip -d"
3581         ;;
3582     darwin)
3583         gas="gas-preprocessor.pl $cc"
3584         enabled ppc && add_asflags -force_cpusubtype_ALL
3585         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3586         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3587         strip="${strip} -x"
3588         add_ldflags -Wl,-dynamic,-search_paths_first
3589         SLIBSUF=".dylib"
3590         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3591         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3592         objformat="macho"
3593         enabled x86_64 && objformat="macho64"
3594         enabled_any pic shared ||
3595             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3596         ;;
3597     mingw32*)
3598         if test $target_os = "mingw32ce"; then
3599             disable network
3600         else
3601             target_os=mingw32
3602         fi
3603         LIBTARGET=i386
3604         if enabled x86_64; then
3605             LIBTARGET="i386:x86-64"
3606         elif enabled arm; then
3607             LIBTARGET=arm-wince
3608         fi
3609         check_ldflags -Wl,--nxcompat
3610         check_ldflags -Wl,--dynamicbase
3611         shlibdir_default="$bindir_default"
3612         SLIBPREF=""
3613         SLIBSUF=".dll"
3614         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3615         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3616         dlltool="${cross_prefix}dlltool"
3617         if check_cmd lib.exe -list; then
3618             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3619             if enabled x86_64; then
3620                 LIBTARGET=x64
3621             fi
3622         elif check_cmd $dlltool --version; then
3623             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3624         fi
3625         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3626         SLIB_INSTALL_LINKS=
3627         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3628         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3629         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3630         objformat="win32"
3631         ranlib=:
3632         enable dos_paths
3633         ;;
3634     win32|win64)
3635         if enabled shared; then
3636             # Link to the import library instead of the normal static library
3637             # for shared libs.
3638             LD_LIB='%.lib'
3639             # Cannot build both shared and static libs with MSVC or icl.
3640             disable static
3641         fi
3642         shlibdir_default="$bindir_default"
3643         SLIBPREF=""
3644         SLIBSUF=".dll"
3645         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3646         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3647         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3648         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3649         SLIB_INSTALL_LINKS=
3650         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3651         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3652         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3653         objformat="win32"
3654         ranlib=:
3655         enable dos_paths
3656         ;;
3657     cygwin*)
3658         target_os=cygwin
3659         shlibdir_default="$bindir_default"
3660         SLIBPREF="cyg"
3661         SLIBSUF=".dll"
3662         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3663         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3664         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3665         SLIB_INSTALL_LINKS=
3666         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3667         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3668         objformat="win32"
3669         enable dos_paths
3670         ;;
3671     *-dos|freedos|opendos)
3672         network_extralibs="-lsocket"
3673         objformat="coff"
3674         enable dos_paths
3675         add_cppflags -U__STRICT_ANSI__
3676         ;;
3677     linux)
3678         enable dv1394
3679         ;;
3680     irix*)
3681         target_os=irix
3682         ranlib="echo ignoring ranlib"
3683         ;;
3684     os/2*)
3685         strip="lxlite -CS"
3686         ln_s="cp -f"
3687         objformat="aout"
3688         add_cppflags -D_GNU_SOURCE
3689         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3690         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3691         LIBSUF="_s.a"
3692         SLIBPREF=""
3693         SLIBSUF=".dll"
3694         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3695         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3696         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3697             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3698             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3699             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3700             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3701             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3702         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3703             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3704         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3705         enable dos_paths
3706         enable_weak os2threads
3707         ;;
3708     gnu/kfreebsd)
3709         add_cppflags -D_BSD_SOURCE
3710         ;;
3711     gnu)
3712         ;;
3713     qnx)
3714         add_cppflags -D_QNX_SOURCE
3715         network_extralibs="-lsocket"
3716         ;;
3717     symbian)
3718         SLIBSUF=".dll"
3719         enable dos_paths
3720         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3721         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3722         add_ldflags -Wl,--target1-abs,--no-undefined \
3723                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3724                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3725         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3726                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3727                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3728         ;;
3729     osf1)
3730         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3731         ;;
3732     minix)
3733         ;;
3734     plan9)
3735         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3736                      -D_REENTRANT_SOURCE        \
3737                      -D_RESEARCH_SOURCE         \
3738                      -DFD_SETSIZE=96            \
3739                      -DHAVE_SOCK_OPTS
3740         add_compat strtod.o strtod=avpriv_strtod
3741         network_extralibs='-lbsd'
3742         exeobjs=compat/plan9/main.o
3743         disable ffserver
3744         cp_f='cp'
3745         ;;
3746     none)
3747         ;;
3748     *)
3749         die "Unknown OS '$target_os'."
3750         ;;
3751 esac
3752
3753 # determine libc flavour
3754
3755 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3756 if check_cpp_condition features.h "defined __UCLIBC__"; then
3757     libc_type=uclibc
3758     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3759 elif check_cpp_condition features.h "defined __GLIBC__"; then
3760     libc_type=glibc
3761     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3762 # MinGW headers can be installed on Cygwin, so check for newlib first.
3763 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3764     libc_type=newlib
3765     add_cppflags -U__STRICT_ANSI__
3766 elif check_header _mingw.h; then
3767     libc_type=mingw
3768     check_cpp_condition _mingw.h \
3769         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3770             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3771         die "ERROR: MinGW runtime version must be >= 3.15."
3772     add_cppflags -U__STRICT_ANSI__
3773     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3774             __MINGW64_VERSION_MAJOR < 3"; then
3775         add_compat msvcrt/snprintf.o
3776         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3777     else
3778         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3779     fi
3780 elif check_func_headers stdlib.h _get_doserrno; then
3781     libc_type=msvcrt
3782     add_compat strtod.o strtod=avpriv_strtod
3783     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3784                                  _snprintf=avpriv_snprintf  \
3785                                  vsnprintf=avpriv_vsnprintf
3786     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3787     # 0x601 by default unless something else is set by the user.
3788     # This can easily lead to us detecting functions only present
3789     # in such new versions and producing binaries requiring windows 7.0.
3790     # Therefore explicitly set the default to XP unless the user has
3791     # set something else on the command line.
3792     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3793 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3794     libc_type=klibc
3795 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3796     libc_type=bionic
3797     add_compat strtod.o strtod=avpriv_strtod
3798 fi
3799
3800 test -n "$libc_type" && enable $libc_type
3801
3802 # hacks for compiler/libc/os combinations
3803
3804 if enabled_all tms470 glibc; then
3805     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3806     add_cppflags -D__USER_LABEL_PREFIX__=
3807     add_cppflags -D__builtin_memset=memset
3808     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3809     add_cflags   -pds=48    # incompatible redefinition of macro
3810 fi
3811
3812 if enabled_all ccc glibc; then
3813     add_ldflags -Wl,-z,now  # calls to libots crash without this
3814 fi
3815
3816 esc(){
3817     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3818 }
3819
3820 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3821
3822 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3823
3824 set_default $PATHS_LIST
3825 set_default nm
3826
3827 # we need to build at least one lib type
3828 if ! enabled_any static shared; then
3829     cat <<EOF
3830 At least one library type must be built.
3831 Specify --enable-static to build the static libraries or --enable-shared to
3832 build the shared libraries as well. To only build the shared libraries specify
3833 --disable-static in addition to --enable-shared.
3834 EOF
3835     exit 1;
3836 fi
3837
3838 # backward compatibility layer for incompatible_libav/fork_abi
3839 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3840 enabled incompatible_libav_abi && enable incompatible_fork_abi
3841
3842 die_license_disabled() {
3843     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3844 }
3845
3846 die_license_disabled_gpl() {
3847     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3848 }
3849
3850 die_license_disabled gpl frei0r
3851 die_license_disabled gpl libcdio
3852 die_license_disabled gpl libutvideo
3853 die_license_disabled gpl libvidstab
3854 die_license_disabled gpl libx264
3855 die_license_disabled gpl libxavs
3856 die_license_disabled gpl libxvid
3857 die_license_disabled gpl libzvbi
3858 die_license_disabled gpl x11grab
3859
3860 die_license_disabled nonfree libaacplus
3861 die_license_disabled nonfree libfaac
3862 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3863 enabled gpl && die_license_disabled_gpl nonfree openssl
3864
3865 die_license_disabled version3 libopencore_amrnb
3866 die_license_disabled version3 libopencore_amrwb
3867 die_license_disabled version3 libvo_aacenc
3868 die_license_disabled version3 libvo_amrwbenc
3869
3870 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3871
3872 disabled optimizations || check_cflags -fomit-frame-pointer
3873
3874 enable_weak_pic() {
3875     disabled pic && return
3876     enable pic
3877     add_cppflags -DPIC
3878     case "$target_os" in
3879     mingw*|cygwin*)
3880         ;;
3881     *)
3882         add_cflags -fPIC
3883         ;;
3884     esac
3885     add_asflags  -fPIC
3886 }
3887
3888 enabled pic && enable_weak_pic
3889
3890 check_cc <<EOF || die "Symbol mangling check failed."
3891 int ff_extern;
3892 EOF
3893 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3894 extern_prefix=${sym%%ff_extern*}
3895
3896 check_cc <<EOF && enable_weak inline_asm
3897 void foo(void) { __asm__ volatile ("" ::); }
3898 EOF
3899
3900 _restrict=
3901 for restrict_keyword in restrict __restrict__ __restrict; do
3902     check_cc <<EOF && _restrict=$restrict_keyword && break
3903 void foo(char * $restrict_keyword p);
3904 EOF
3905 done
3906
3907 check_cc <<EOF && enable pragma_deprecated
3908 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3909 EOF
3910
3911 check_cc <<EOF && enable attribute_packed
3912 struct { int x; } __attribute__((packed)) x;
3913 EOF
3914
3915 check_cc <<EOF && enable attribute_may_alias
3916 union { int x; } __attribute__((may_alias)) x;
3917 EOF
3918
3919 check_cc <<EOF || die "endian test failed"
3920 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3921 EOF
3922 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3923
3924 check_inline_asm inline_asm_labels '"1:\n"'
3925
3926 if enabled alpha; then
3927
3928     check_cflags -mieee
3929
3930 elif enabled arm; then
3931
3932     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3933 float func(float a, float b){ return a+b; }
3934 EOF
3935
3936     enabled thumb && check_cflags -mthumb || check_cflags -marm
3937     nogas=die
3938
3939     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3940         enable vfp_args
3941     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3942         case "${cross_prefix:-$cc}" in
3943             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3944             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3945 __asm__ (".eabi_attribute 28, 1");
3946 int main(void) { return 0; }
3947 EOF
3948         esac
3949         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3950     fi
3951
3952     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3953     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3954     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3955     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3956     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3957     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3958
3959     [ $target_os = linux ] ||
3960         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3961             $ARCH_EXT_LIST_ARM
3962
3963     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3964     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3965
3966     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3967
3968     # llvm's integrated assembler supports .object_arch from llvm 3.5
3969     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
3970 .object_arch armv4
3971 EOF
3972
3973 elif enabled mips; then
3974
3975     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3976     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3977      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3978     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3979      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3980     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3981      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3982     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3983      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3984
3985 elif enabled parisc; then
3986
3987     if enabled gcc; then
3988         case $($cc -dumpversion) in
3989             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3990         esac
3991     fi
3992
3993 elif enabled ppc; then
3994
3995     enable local_aligned_8 local_aligned_16
3996
3997     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3998     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3999     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4000     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4001
4002     # AltiVec flags: The FSF version of GCC differs from the Apple version
4003     if enabled altivec; then
4004         if ! enabled_any pic ppc64; then
4005             nogas=warn
4006         fi
4007         check_cflags -maltivec -mabi=altivec &&
4008         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4009         check_cflags -faltivec
4010
4011         # check if our compiler supports Motorola AltiVec C API
4012         check_cc <<EOF || disable altivec
4013 $inc_altivec_h
4014 int main(void) {
4015     vector signed int v1 = (vector signed int) { 0 };
4016     vector signed int v2 = (vector signed int) { 1 };
4017     v1 = vec_add(v1, v2);
4018     return 0;
4019 }
4020 EOF
4021
4022         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4023     fi
4024
4025 elif enabled sparc; then
4026
4027     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4028
4029 elif enabled x86; then
4030
4031     check_builtin rdtsc    intrin.h   "__rdtsc()"
4032     check_builtin mm_empty mmintrin.h "_mm_empty()"
4033
4034     enable local_aligned_8 local_aligned_16
4035
4036     # check whether EBP is available on x86
4037     # As 'i' is stored on the stack, this program will crash
4038     # if the base pointer is used to access it because the
4039     # base pointer is cleared in the inline assembly code.
4040     check_exec_crash <<EOF && enable ebp_available
4041 volatile int i=0;
4042 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4043 return i;
4044 EOF
4045
4046     # check whether EBX is available on x86
4047     check_inline_asm ebx_available '""::"b"(0)' &&
4048         check_inline_asm ebx_available '"":::"%ebx"'
4049
4050     # check whether xmm clobbers are supported
4051     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4052
4053     # check whether binutils is new enough to compile SSSE3/MMXEXT
4054     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4055     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4056
4057     if ! disabled_any asm mmx yasm; then
4058         if check_cmd $yasmexe --version; then
4059             enabled x86_64 && yasm_extra="-m amd64"
4060             yasm_debug="-g dwarf2"
4061         elif check_cmd nasm -v; then
4062             yasmexe=nasm
4063             yasm_debug="-g -F dwarf"
4064             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4065         fi
4066
4067         YASMFLAGS="-f $objformat $yasm_extra"
4068         enabled pic               && append YASMFLAGS "-DPIC"
4069         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4070         case "$objformat" in
4071             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4072         esac
4073
4074         check_yasm "movbe ecx, [5]" && enable yasm ||
4075             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4076         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4077         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4078         check_yasm "CPU amdnop" && enable cpunop
4079     fi
4080
4081     case "$cpu" in
4082         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4083             disable fast_clz
4084         ;;
4085     esac
4086
4087 fi
4088
4089 if enabled asm; then
4090     as=${gas:=$as}
4091     check_as <<EOF && enable gnu_as || \
4092         $nogas "GNU assembler not found, install gas-preprocessor"
4093 .macro m n
4094 \n: .int 0
4095 .endm
4096 m x
4097 EOF
4098 fi
4099
4100 check_ldflags -Wl,--as-needed
4101 check_ldflags -Wl,-z,noexecstack
4102
4103 if check_func dlopen; then
4104     ldl=
4105 elif check_func dlopen -ldl; then
4106     ldl=-ldl
4107 fi
4108
4109 if ! disabled network; then
4110     check_type "sys/types.h sys/socket.h" socklen_t
4111     check_type netdb.h "struct addrinfo"
4112     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4113     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4114     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4115     check_type netinet/in.h "struct sockaddr_in6"
4116     check_type poll.h "struct pollfd"
4117     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4118     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4119     check_type netinet/sctp.h "struct sctp_event_subscribe"
4120     check_func getaddrinfo $network_extralibs
4121     check_func getservbyport $network_extralibs
4122     # Prefer arpa/inet.h over winsock2
4123     if check_header arpa/inet.h ; then
4124         check_func closesocket
4125     elif check_header winsock2.h ; then
4126         check_func_headers winsock2.h closesocket -lws2 &&
4127             network_extralibs="-lws2" ||
4128         { check_func_headers winsock2.h closesocket -lws2_32 &&
4129             network_extralibs="-lws2_32"; }
4130         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4131         check_type ws2tcpip.h socklen_t
4132         check_type ws2tcpip.h "struct addrinfo"
4133         check_type ws2tcpip.h "struct group_source_req"
4134         check_type ws2tcpip.h "struct ip_mreq_source"
4135         check_type ws2tcpip.h "struct ipv6_mreq"
4136         check_type winsock2.h "struct pollfd"
4137         check_type ws2tcpip.h "struct sockaddr_in6"
4138         check_type ws2tcpip.h "struct sockaddr_storage"
4139         check_struct winsock2.h "struct sockaddr" sa_len
4140     else
4141         disable network
4142     fi
4143 fi
4144
4145 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4146 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4147
4148 check_func  access
4149 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4150 check_func  fcntl
4151 check_func  fork
4152 check_func_headers stdlib.h getenv
4153 check_func  gethrtime
4154 check_func  getopt
4155 check_func  getrusage
4156 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4157 check_func  gettimeofday
4158 check_func  inet_aton $network_extralibs
4159 check_func  isatty
4160 check_func  localtime_r
4161 check_func  ${malloc_prefix}memalign            && enable memalign
4162 check_func  mkstemp
4163 check_func  mmap
4164 check_func  mprotect
4165 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4166 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4167 check_func  setrlimit
4168 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4169 check_func  strerror_r
4170 check_func  sched_getaffinity
4171 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4172 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4173 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4174 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4175 check_builtin sarestart signal.h "SA_RESTART"
4176 check_func  sysconf
4177 check_func  sysctl
4178 check_func  usleep
4179 check_func_headers conio.h kbhit
4180 check_func_headers windows.h PeekNamedPipe
4181 check_func_headers io.h setmode
4182 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4183 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4184 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4185 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4186 check_func_headers windows.h GetProcessAffinityMask
4187 check_func_headers windows.h GetProcessTimes
4188 check_func_headers windows.h GetSystemTimeAsFileTime
4189 check_func_headers windows.h MapViewOfFile
4190 check_func_headers windows.h SetConsoleTextAttribute
4191 check_func_headers windows.h Sleep
4192 check_func_headers windows.h VirtualAlloc
4193 check_func_headers glob.h glob
4194 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4195
4196 check_header cl/cl.h
4197 check_header direct.h
4198 check_header dlfcn.h
4199 check_header dxva.h
4200 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4201 check_header io.h
4202 check_header libcrystalhd/libcrystalhd_if.h
4203 check_header malloc.h
4204 check_header poll.h
4205 check_header sys/mman.h
4206 check_header sys/param.h
4207 check_header sys/resource.h
4208 check_header sys/select.h
4209 check_header sys/time.h
4210 check_header sys/un.h
4211 check_header termios.h
4212 check_header unistd.h
4213 check_header vdpau/vdpau.h
4214 check_header vdpau/vdpau_x11.h
4215 check_header VideoDecodeAcceleration/VDADecoder.h
4216 check_header windows.h
4217 check_header X11/extensions/XvMClib.h
4218 check_header asm/types.h
4219
4220 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4221 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4222
4223 if ! disabled w32threads && ! enabled pthreads; then
4224     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4225 fi
4226
4227 # check for some common methods of building with pthread support
4228 # do this before the optional library checks as some of them require pthreads
4229 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4230     enable pthreads
4231     if check_func pthread_create; then
4232         :
4233     elif check_func pthread_create -pthread; then
4234         add_cflags -pthread
4235         add_extralibs -pthread
4236     elif check_func pthread_create -pthreads; then
4237         add_cflags -pthreads
4238         add_extralibs -pthreads
4239     elif check_func pthread_create -lpthreadGC2; then
4240         add_extralibs -lpthreadGC2
4241     elif ! check_lib pthread.h pthread_create -lpthread; then
4242         disable pthreads
4243     fi
4244 fi
4245
4246 for thread in $THREADS_LIST; do
4247     if enabled $thread; then
4248         test -n "$thread_type" &&
4249             die "ERROR: Only one thread type must be selected." ||
4250             thread_type="$thread"
4251     fi
4252 done
4253
4254 if enabled pthreads; then
4255   check_func pthread_cancel
4256 fi
4257
4258 enabled sync_val_compare_and_swap && enable atomics_gcc
4259 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4260 enabled MemoryBarrier && enable atomics_win32
4261
4262 check_lib math.h sin -lm && LIBM="-lm"
4263 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4264
4265 atan2f_args=2
4266 ldexpf_args=2
4267 powf_args=2
4268
4269 for func in $MATH_FUNCS; do
4270     eval check_mathfunc $func \${${func}_args:-1}
4271 done
4272
4273 # these are off by default, so fail if requested and not available
4274 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4275                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4276                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4277 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4278 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4279 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4280 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4281 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4282 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4283 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4284 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4285 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4286                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4287                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4288 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4289 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4290 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4291 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"
4292 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4293 enabled libfreetype       && require_libfreetype
4294 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4295 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4296                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4297                                done || die "ERROR: libgsm not found"; }
4298 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4299 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4300 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4301 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4302 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4303 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4304 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4305 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4306                                check_lib openjpeg.h opj_version -lopenjpeg ||
4307                                die "ERROR: libopenjpeg not found"; }
4308 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4309 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4310 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4311 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4312 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4313 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4314 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4315 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4316 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4317 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4318     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4319     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4320 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4321 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4322                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4323                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4324 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4325 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4326 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4327 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4328 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4329 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4330 enabled libvpx            && {
4331     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4332                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4333     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 ||
4334                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4335     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4336     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4337 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4338 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4339                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4340                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4341 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4342 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4343 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4344 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4345 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4346                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4347                                die "ERROR: openal not found"; } &&
4348                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4349                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4350 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4351                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4352                                die "ERROR: opencl not found"; } &&
4353                              { ! enabled_any w32threads os2threads ||
4354                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4355                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4356                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4357                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4358 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4359                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4360                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4361                                die "ERROR: openssl not found"; }
4362
4363 if enabled gnutls; then
4364     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4365     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4366 fi
4367
4368 # libdc1394 check
4369 if enabled libdc1394; then
4370     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4371         enable libdc1394_2; } ||
4372     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4373         enable libdc1394_1; } ||
4374     die "ERROR: No version of libdc1394 found "
4375 fi
4376
4377 SDL_CONFIG="${cross_prefix}sdl-config"
4378 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4379     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4380     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4381     enable sdl
4382 else
4383   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4384     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4385     sdl_libs=$("${SDL_CONFIG}" --libs)
4386     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4387     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4388     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4389     enable sdl
4390   fi
4391 fi
4392 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4393
4394 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4395 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4396 perl --version > /dev/null 2>&1 && enable perl || disable perl
4397 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4398 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4399
4400 check_header linux/fb.h
4401 check_header linux/videodev.h
4402 check_header linux/videodev2.h
4403 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4404
4405 check_header sys/videoio.h
4406
4407 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4408 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4409 # w32api 3.12 had it defined wrong
4410 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4411
4412 check_type "dshow.h" IBaseFilter
4413
4414 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4415 { check_header dev/bktr/ioctl_meteor.h &&
4416   check_header dev/bktr/ioctl_bt848.h; } ||
4417 { check_header machine/ioctl_meteor.h &&
4418   check_header machine/ioctl_bt848.h; } ||
4419 { check_header dev/video/meteor/ioctl_meteor.h &&
4420   check_header dev/video/bktr/ioctl_bt848.h; } ||
4421 check_header dev/ic/bt8xx.h
4422
4423 check_header sndio.h
4424 if check_struct sys/soundcard.h audio_buf_info bytes; then
4425     enable_safe sys/soundcard.h
4426 else
4427     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4428     #include <sys/soundcard.h>
4429     audio_buf_info abc;
4430 EOF
4431 fi
4432 check_header soundcard.h
4433
4434 enabled_any alsa_indev alsa_outdev &&
4435     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4436
4437 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4438     check_func jack_port_get_latency_range -ljack
4439
4440 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4441
4442 if enabled libcdio; then
4443     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4444     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4445     die "ERROR: libcdio-paranoia not found"
4446 fi
4447
4448 enabled x11grab                                           &&
4449 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4450 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4451 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4452
4453 enabled vaapi &&
4454     check_lib va/va.h vaInitialize -lva ||
4455     disable vaapi
4456
4457 enabled vdpau &&
4458     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4459     disable vdpau
4460
4461 # Funny iconv installations are not unusual, so check it after all flags have been set
4462 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4463
4464 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4465
4466 # add some useful compiler flags if supported
4467 check_cflags -Wdeclaration-after-statement
4468 check_cflags -Wall
4469 check_cflags -Wno-parentheses
4470 check_cflags -Wno-switch
4471 check_cflags -Wno-format-zero-length
4472 check_cflags -Wdisabled-optimization
4473 check_cflags -Wpointer-arith
4474 check_cflags -Wredundant-decls
4475 check_cflags -Wno-pointer-sign
4476 check_cflags -Wwrite-strings
4477 check_cflags -Wtype-limits
4478 check_cflags -Wundef
4479 check_cflags -Wmissing-prototypes
4480 check_cflags -Wno-pointer-to-int-cast
4481 check_cflags -Wstrict-prototypes
4482 enabled extra_warnings && check_cflags -Winline
4483
4484 # add some linker flags
4485 check_ldflags -Wl,--warn-common
4486 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4487 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4488
4489 # add some strip flags
4490 # -wN '..@*' is more selective than -x, but not available everywhere.
4491 check_stripflags -wN \'..@*\' || check_stripflags -x
4492
4493 enabled xmm_clobber_test &&
4494     check_ldflags -Wl,--wrap,avcodec_open2              \
4495                   -Wl,--wrap,avcodec_decode_audio4      \
4496                   -Wl,--wrap,avcodec_decode_video2      \
4497                   -Wl,--wrap,avcodec_decode_subtitle2   \
4498                   -Wl,--wrap,avcodec_encode_audio2      \
4499                   -Wl,--wrap,avcodec_encode_video       \
4500                   -Wl,--wrap,avcodec_encode_video2      \
4501                   -Wl,--wrap,avcodec_encode_subtitle    \
4502                   -Wl,--wrap,sws_scale ||
4503     disable xmm_clobber_test
4504
4505 echo "X{};" > $TMPV
4506 if test_ldflags -Wl,--version-script,$TMPV; then
4507     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4508     check_cc <<EOF && enable symver_asm_label
4509 void ff_foo(void) __asm__ ("av_foo@VERSION");
4510 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4511 EOF
4512     check_cc <<EOF && enable symver_gnu_asm
4513 __asm__(".symver ff_foo,av_foo@VERSION");
4514 void ff_foo(void) {}
4515 EOF
4516 fi
4517
4518 if [ -z "$optflags" ]; then
4519     if enabled small; then
4520         optflags=$cflags_size
4521     elif enabled optimizations; then
4522         optflags=$cflags_speed
4523     else
4524         optflags=$cflags_noopt
4525     fi
4526 fi
4527
4528 check_optflags(){
4529     check_cflags "$@"
4530     enabled lto && check_ldflags "$@"
4531 }
4532
4533
4534 if enabled lto; then
4535     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4536     check_cflags  -flto
4537     check_ldflags -flto $cpuflags
4538 fi
4539
4540 check_optflags $optflags
4541 check_optflags -fno-math-errno
4542 check_optflags -fno-signed-zeros
4543
4544 enabled ftrapv && check_cflags -ftrapv
4545
4546 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4547 int x;
4548 EOF
4549
4550
4551 if enabled icc; then
4552     # Just warnings, no remarks
4553     check_cflags -w1
4554     # -wd: Disable following warnings
4555     # 144, 167, 556: -Wno-pointer-sign
4556     # 188: enumerated type mixed with another type
4557     # 1292: attribute "foo" ignored
4558     # 1419: external declaration in primary source file
4559     # 10006: ignoring unknown option -fno-signed-zeros
4560     # 10148: ignoring unknown option -Wno-parentheses
4561     # 10156: ignoring option '-W'; no argument required
4562     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4563     # 11030: Warning unknown option --as-needed
4564     # 10156: ignoring option '-export'; no argument required
4565     check_ldflags -wd10156,11030
4566     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4567     enable ebp_available
4568     if enabled x86_32; then
4569         icc_version=$($cc -dumpversion)
4570         test ${icc_version%%.*} -ge 11 &&
4571             check_cflags -falign-stack=maintain-16-byte ||
4572             disable aligned_stack
4573     fi
4574 elif enabled ccc; then
4575     # disable some annoying warnings
4576     add_cflags -msg_disable bitnotint
4577     add_cflags -msg_disable mixfuncvoid
4578     add_cflags -msg_disable nonstandcast
4579     add_cflags -msg_disable unsupieee
4580 elif enabled gcc; then
4581     check_optflags -fno-tree-vectorize
4582     check_cflags -Werror=implicit-function-declaration
4583     check_cflags -Werror=missing-prototypes
4584     check_cflags -Werror=return-type
4585     check_cflags -Werror=vla
4586 elif enabled llvm_gcc; then
4587     check_cflags -mllvm -stack-alignment=16
4588 elif enabled clang; then
4589     check_cflags -mllvm -stack-alignment=16
4590     check_cflags -Qunused-arguments
4591     check_cflags -Werror=implicit-function-declaration
4592     check_cflags -Werror=missing-prototypes
4593     check_cflags -Werror=return-type
4594 elif enabled cparser; then
4595     add_cflags -Wno-missing-variable-declarations
4596     add_cflags -Wno-empty-statement
4597 elif enabled armcc; then
4598     # 2523: use of inline assembler is deprecated
4599     add_cflags -W${armcc_opt},--diag_suppress=2523
4600     add_cflags -W${armcc_opt},--diag_suppress=1207
4601     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4602     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4603     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4604     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4605 elif enabled tms470; then
4606     add_cflags -pds=824 -pds=837
4607 elif enabled pathscale; then
4608     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4609 elif enabled_any msvc icl; then
4610     enabled x86_32 && disable aligned_stack
4611     enabled_all x86_32 debug && add_cflags -Oy-
4612     enabled debug && add_ldflags -debug
4613     enable pragma_deprecated
4614     if enabled icl; then
4615         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4616         # (correctly) on icl 13.x.
4617         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4618             add_cflags -Qansi-alias
4619         # icl will pass the inline asm tests but inline asm is currently
4620         # not supported (build will fail)
4621         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4622         disable inline_asm
4623     fi
4624 fi
4625
4626 case $target_os in
4627     osf1)
4628         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4629     ;;
4630     plan9)
4631         add_cppflags -Dmain=plan9_main
4632     ;;
4633 esac
4634
4635 enable frame_thread_encoder
4636 enabled_any $THREADS_LIST      && enable threads
4637 enabled_any $ATOMICS_LIST      && enable atomics_native
4638
4639 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"
4640
4641 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4642
4643 check_deps $CONFIG_LIST       \
4644            $CONFIG_EXTRA      \
4645            $HAVE_LIST         \
4646            $ALL_COMPONENTS    \
4647
4648
4649 if test $target_os = "haiku"; then
4650     disable memalign
4651     disable posix_memalign
4652 fi
4653
4654 ! enabled_any memalign posix_memalign aligned_malloc &&
4655     enabled_any $need_memalign && enable memalign_hack
4656
4657 # add_dep lib dep
4658 # -> enable ${lib}_deps_${dep}
4659 # -> add $dep to ${lib}_deps only once
4660 add_dep() {
4661     lib=$1
4662     dep=$2
4663     enabled "${lib}_deps_${dep}" && return 0
4664     enable  "${lib}_deps_${dep}"
4665     prepend "${lib}_deps" $dep
4666 }
4667
4668 # merge deps lib components
4669 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4670 merge_deps() {
4671     lib=$1
4672     shift
4673     for comp in $*; do
4674         enabled $comp || continue
4675         eval "dep=\"\$${comp}_deps\""
4676         for d in $dep; do
4677             add_dep $lib $d
4678         done
4679     done
4680 }
4681
4682 merge_deps libavfilter $FILTER_LIST
4683
4684 echo "install prefix            $prefix"
4685 echo "source path               $source_path"
4686 echo "C compiler                $cc"
4687 echo "ARCH                      $arch ($cpu)"
4688 if test "$build_suffix" != ""; then
4689     echo "build suffix              $build_suffix"
4690 fi
4691 if test "$progs_suffix" != ""; then
4692     echo "progs suffix              $progs_suffix"
4693 fi
4694 if test "$extra_version" != ""; then
4695     echo "version string suffix     $extra_version"
4696 fi
4697 echo "big-endian                ${bigendian-no}"
4698 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4699 if enabled x86; then
4700     echo "${yasmexe}                      ${yasm-no}"
4701     echo "MMX enabled               ${mmx-no}"
4702     echo "MMXEXT enabled            ${mmxext-no}"
4703     echo "3DNow! enabled            ${amd3dnow-no}"
4704     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4705     echo "SSE enabled               ${sse-no}"
4706     echo "SSSE3 enabled             ${ssse3-no}"
4707     echo "AVX enabled               ${avx-no}"
4708     echo "FMA4 enabled              ${fma4-no}"
4709     echo "i686 features enabled     ${i686-no}"
4710     echo "CMOV is fast              ${fast_cmov-no}"
4711     echo "EBX available             ${ebx_available-no}"
4712     echo "EBP available             ${ebp_available-no}"
4713 fi
4714 if enabled arm; then
4715     echo "ARMv5TE enabled           ${armv5te-no}"
4716     echo "ARMv6 enabled             ${armv6-no}"
4717     echo "ARMv6T2 enabled           ${armv6t2-no}"
4718     echo "VFP enabled               ${vfp-no}"
4719     echo "NEON enabled              ${neon-no}"
4720     echo "THUMB enabled             ${thumb-no}"
4721 fi
4722 if enabled mips; then
4723     echo "MIPS FPU enabled          ${mipsfpu-no}"
4724     echo "MIPS32R2 enabled          ${mips32r2-no}"
4725     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4726     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4727 fi
4728 if enabled ppc; then
4729     echo "AltiVec enabled           ${altivec-no}"
4730     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4731     echo "dcbzl available           ${dcbzl-no}"
4732 fi
4733 if enabled sparc; then
4734     echo "VIS enabled               ${vis-no}"
4735 fi
4736 echo "debug symbols             ${debug-no}"
4737 echo "strip symbols             ${stripping-no}"
4738 echo "optimize for size         ${small-no}"
4739 echo "optimizations             ${optimizations-no}"
4740 echo "static                    ${static-no}"
4741 echo "shared                    ${shared-no}"
4742 echo "postprocessing support    ${postproc-no}"
4743 echo "new filter support        ${avfilter-no}"
4744 echo "network support           ${network-no}"
4745 echo "threading support         ${thread_type-no}"
4746 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4747 echo "SDL support               ${sdl-no}"
4748 echo "opencl enabled            ${opencl-no}"
4749 echo "libzvbi enabled           ${libzvbi-no}"
4750 echo "texi2html enabled         ${texi2html-no}"
4751 echo "perl enabled              ${perl-no}"
4752 echo "pod2man enabled           ${pod2man-no}"
4753 echo "makeinfo enabled          ${makeinfo-no}"
4754 test -n "$random_seed" &&
4755     echo "random seed               ${random_seed}"
4756 echo
4757
4758 echo "External libraries:"
4759 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4760 echo
4761
4762 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4763     echo "Enabled ${type}s:"
4764     eval list=\$$(toupper $type)_LIST
4765     print_enabled '_*' $list | print_3_columns
4766     echo
4767 done
4768
4769 license="LGPL version 2.1 or later"
4770 if enabled nonfree; then
4771     license="nonfree and unredistributable"
4772 elif enabled gplv3; then
4773     license="GPL version 3 or later"
4774 elif enabled lgplv3; then
4775     license="LGPL version 3 or later"
4776 elif enabled gpl; then
4777     license="GPL version 2 or later"
4778 fi
4779
4780 echo "License: $license"
4781
4782 echo "Creating config.mak, config.h, and doc/config.texi..."
4783
4784 test -e Makefile || $ln_s "$source_path/Makefile" .
4785
4786 enabled stripping || strip="echo skipping strip"
4787
4788 config_files="$TMPH config.mak doc/config.texi"
4789
4790 cat > config.mak <<EOF
4791 # Automatically generated by configure - do not modify!
4792 ifndef FFMPEG_CONFIG_MAK
4793 FFMPEG_CONFIG_MAK=1
4794 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4795 prefix=$prefix
4796 LIBDIR=\$(DESTDIR)$libdir
4797 SHLIBDIR=\$(DESTDIR)$shlibdir
4798 INCDIR=\$(DESTDIR)$incdir
4799 BINDIR=\$(DESTDIR)$bindir
4800 DATADIR=\$(DESTDIR)$datadir
4801 DOCDIR=\$(DESTDIR)$docdir
4802 MANDIR=\$(DESTDIR)$mandir
4803 SRC_PATH=$source_path
4804 ifndef MAIN_MAKEFILE
4805 SRC_PATH:=\$(SRC_PATH:.%=..%)
4806 endif
4807 CC_IDENT=$cc_ident
4808 ARCH=$arch
4809 CC=$cc
4810 CXX=$cxx
4811 AS=$as
4812 LD=$ld
4813 DEPCC=$dep_cc
4814 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4815 DEPAS=$as
4816 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4817 YASM=$yasmexe
4818 DEPYASM=$yasmexe
4819 AR=$ar
4820 ARFLAGS=$arflags
4821 AR_O=$ar_o
4822 RANLIB=$ranlib
4823 STRIP=$strip
4824 CP=cp -p
4825 LN_S=$ln_s
4826 CPPFLAGS=$CPPFLAGS
4827 CFLAGS=$CFLAGS
4828 CXXFLAGS=$CXXFLAGS
4829 ASFLAGS=$ASFLAGS
4830 AS_C=$AS_C
4831 AS_O=$AS_O
4832 CC_C=$CC_C
4833 CC_E=$CC_E
4834 CC_O=$CC_O
4835 CXX_C=$CXX_C
4836 CXX_O=$CXX_O
4837 LD_O=$LD_O
4838 LD_LIB=$LD_LIB
4839 LD_PATH=$LD_PATH
4840 DLLTOOL=$dlltool
4841 LDFLAGS=$LDFLAGS
4842 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4843 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
4844 YASMFLAGS=$YASMFLAGS
4845 BUILDSUF=$build_suffix
4846 PROGSSUF=$progs_suffix
4847 FULLNAME=$FULLNAME
4848 LIBPREF=$LIBPREF
4849 LIBSUF=$LIBSUF
4850 LIBNAME=$LIBNAME
4851 SLIBPREF=$SLIBPREF
4852 SLIBSUF=$SLIBSUF
4853 EXESUF=$EXESUF
4854 EXTRA_VERSION=$extra_version
4855 CCDEP=$CCDEP
4856 CXXDEP=$CXXDEP
4857 CCDEP_FLAGS=$CCDEP_FLAGS
4858 ASDEP=$ASDEP
4859 ASDEP_FLAGS=$ASDEP_FLAGS
4860 CC_DEPFLAGS=$CC_DEPFLAGS
4861 AS_DEPFLAGS=$AS_DEPFLAGS
4862 HOSTCC=$host_cc
4863 HOSTLD=$host_ld
4864 HOSTCFLAGS=$host_cflags
4865 HOSTCPPFLAGS=$host_cppflags
4866 HOSTEXESUF=$HOSTEXESUF
4867 HOSTLDFLAGS=$host_ldflags
4868 HOSTLIBS=$host_libs
4869 DEPHOSTCC=$host_cc
4870 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4871 HOSTCCDEP=$HOSTCCDEP
4872 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4873 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4874 HOSTCC_C=$HOSTCC_C
4875 HOSTCC_O=$HOSTCC_O
4876 HOSTLD_O=$HOSTLD_O
4877 TARGET_EXEC=$target_exec $target_exec_args
4878 TARGET_PATH=$target_path
4879 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4880 LIBS-ffplay=$sdl_libs
4881 CFLAGS-ffplay=$sdl_cflags
4882 ZLIB=$($ldflags_filter -lz)
4883 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4884 EXTRALIBS=$extralibs
4885 COMPAT_OBJS=$compat_objs
4886 EXEOBJS=$exeobjs
4887 INSTALL=$install
4888 LIBTARGET=${LIBTARGET}
4889 SLIBNAME=${SLIBNAME}
4890 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4891 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4892 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4893 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4894 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4895 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4896 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4897 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4898 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4899 NOREDZONE_FLAGS=$noredzone_flags
4900 EOF
4901
4902 get_version(){
4903     lcname=lib${1}
4904     name=$(toupper $lcname)
4905     file=$source_path/$lcname/version.h
4906     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4907     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
4908     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4909     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4910     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4911     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4912 }
4913
4914 map 'get_version $v' $LIBRARY_LIST
4915
4916 cat > $TMPH <<EOF
4917 /* Automatically generated by configure - do not modify! */
4918 #ifndef FFMPEG_CONFIG_H
4919 #define FFMPEG_CONFIG_H
4920 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4921 #define FFMPEG_LICENSE "$(c_escape $license)"
4922 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4923 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4924 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4925 #define av_restrict $_restrict
4926 #define EXTERN_PREFIX "${extern_prefix}"
4927 #define EXTERN_ASM ${extern_prefix}
4928 #define SLIBSUF "$SLIBSUF"
4929 #define HAVE_MMX2 HAVE_MMXEXT
4930 EOF
4931
4932 test -n "$assert_level" &&
4933     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4934
4935 test -n "$malloc_prefix" &&
4936     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4937
4938 if enabled yasm; then
4939     append config_files $TMPASM
4940     printf '' >$TMPASM
4941 fi
4942
4943 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4944
4945
4946 mkdir -p doc
4947 mkdir -p tests
4948 echo "@c auto-generated by configure" > doc/config.texi
4949
4950 print_config ARCH_   "$config_files" $ARCH_LIST
4951 print_config HAVE_   "$config_files" $HAVE_LIST
4952 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4953                                      $CONFIG_EXTRA      \
4954                                      $ALL_COMPONENTS    \
4955
4956 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4957 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4958
4959 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4960 cp_if_changed $TMPH config.h
4961 touch .config
4962
4963 enabled yasm && cp_if_changed $TMPASM config.asm
4964
4965 cat > $TMPH <<EOF
4966 /* Generated by ffconf */
4967 #ifndef AVUTIL_AVCONFIG_H
4968 #define AVUTIL_AVCONFIG_H
4969 EOF
4970
4971 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4972
4973 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4974
4975 cp_if_changed $TMPH libavutil/avconfig.h
4976
4977 if test -n "$WARNINGS"; then
4978     printf "\n$WARNINGS"
4979     enabled fatal_warnings && exit 1
4980 fi
4981
4982 # build pkg-config files
4983
4984 pkgconfig_generate(){
4985     name=$1
4986     shortname=${name#lib}${build_suffix}
4987     comment=$2
4988     version=$3
4989     libs=$4
4990     requires=$5
4991     enabled ${name#lib} || return 0
4992     mkdir -p $name
4993     cat <<EOF > $name/$name${build_suffix}.pc
4994 prefix=$prefix
4995 exec_prefix=\${prefix}
4996 libdir=$libdir
4997 includedir=$incdir
4998
4999 Name: $name
5000 Description: $comment
5001 Version: $version
5002 Requires: $(enabled shared || echo $requires)
5003 Requires.private: $(enabled shared && echo $requires)
5004 Conflicts:
5005 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5006 Libs.private: $(enabled shared && echo $libs)
5007 Cflags: -I\${includedir}
5008 EOF
5009
5010 mkdir -p doc/examples/pc-uninstalled
5011 includedir=${source_path}
5012 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5013     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5014 prefix=
5015 exec_prefix=
5016 libdir=\${pcfiledir}/../../../$name
5017 includedir=${includedir}
5018
5019 Name: $name
5020 Description: $comment
5021 Version: $version
5022 Requires: $requires
5023 Conflicts:
5024 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5025 Cflags: -I\${includedir}
5026 EOF
5027 }
5028
5029 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5030 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5031 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5032 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5033 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5034 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5035 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5036 lavfi_libs=${lavfi_libs%, }
5037
5038 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5039 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5040
5041 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5042 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5043 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5044 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5045 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5046 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5047 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5048 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5049 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5050
5051 fix_ffmpeg_remote(){
5052     git_remote_from=$1
5053     git_remote_to=$2
5054     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5055     if [ "$fixme_remote" != "" ]; then
5056         echolog "
5057 Outdated domain in git config, the official domain for ffmpeg git is since
5058 November 2011, source.ffmpeg.org, both the old and the new point to the same
5059 repository and server. To update it enter the following commands:
5060 "
5061         for remote in $fixme_remote; do
5062             echolog "git remote set-url $remote $git_remote_to"
5063         done
5064     fi
5065 }
5066
5067 if test -f "$source_path/.git/config"; then
5068     remote_from=git.videolan.org
5069     remote_to=source.ffmpeg.org
5070     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5071     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5072 fi