git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-raise-major     increase major version numbers in sonames [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147
 148 Hardware accelerators:
 149   --disable-dxva2          disable DXVA2 code [autodetect]
 150   --disable-vaapi          disable VAAPI code [autodetect]
 151   --disable-vda            disable VDA code [autodetect]
 152   --disable-vdpau          disable VDPAU code [autodetect]
 153
 154 Individual component options:
 155   --disable-everything     disable all components listed below
 156   --disable-encoder=NAME   disable encoder NAME
 157   --enable-encoder=NAME    enable encoder NAME
 158   --disable-encoders       disable all encoders
 159   --disable-decoder=NAME   disable decoder NAME
 160   --enable-decoder=NAME    enable decoder NAME
 161   --disable-decoders       disable all decoders
 162   --disable-hwaccel=NAME   disable hwaccel NAME
 163   --enable-hwaccel=NAME    enable hwaccel NAME
 164   --disable-hwaccels       disable all hwaccels
 165   --disable-muxer=NAME     disable muxer NAME
 166   --enable-muxer=NAME      enable muxer NAME
 167   --disable-muxers         disable all muxers
 168   --disable-demuxer=NAME   disable demuxer NAME
 169   --enable-demuxer=NAME    enable demuxer NAME
 170   --disable-demuxers       disable all demuxers
 171   --enable-parser=NAME     enable parser NAME
 172   --disable-parser=NAME    disable parser NAME
 173   --disable-parsers        disable all parsers
 174   --enable-bsf=NAME        enable bitstream filter NAME
 175   --disable-bsf=NAME       disable bitstream filter NAME
 176   --disable-bsfs           disable all bitstream filters
 177   --enable-protocol=NAME   enable protocol NAME
 178   --disable-protocol=NAME  disable protocol NAME
 179   --disable-protocols      disable all protocols
 180   --enable-indev=NAME      enable input device NAME
 181   --disable-indev=NAME     disable input device NAME
 182   --disable-indevs         disable input devices
 183   --enable-outdev=NAME     enable output device NAME
 184   --disable-outdev=NAME    disable output device NAME
 185   --disable-outdevs        disable output devices
 186   --disable-devices        disable all devices
 187   --enable-filter=NAME     enable filter NAME
 188   --disable-filter=NAME    disable filter NAME
 189   --disable-filters        disable all filters
 190
 191 External library support:
 192   --enable-avisynth        enable reading of AviSynth script files [no]
 193   --disable-bzlib          disable bzlib [autodetect]
 194   --enable-fontconfig      enable fontconfig
 195   --enable-frei0r          enable frei0r video filtering
 196   --enable-gnutls          enable gnutls [no]
 197   --disable-iconv          disable iconv [autodetect]
 198   --enable-ladspa          enable LADSPA audio filtering
 199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 200   --enable-libass          enable libass subtitles rendering [no]
 201   --enable-libbluray       enable BluRay reading using libbluray [no]
 202   --enable-libbs2b         enable bs2b DSP library [no]
 203   --enable-libcaca         enable textual display using libcaca
 204   --enable-libcelt         enable CELT decoding via libcelt [no]
 205   --enable-libcdio         enable audio CD grabbing with libcdio
 206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 207                            and libraw1394 [no]
 208   --enable-libfaac         enable AAC encoding via libfaac [no]
 209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 211   --enable-libfreetype     enable libfreetype [no]
 212   --enable-libfribidi      enable libfribidi [no]
 213   --enable-libgme          enable Game Music Emu via libgme [no]
 214   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 215   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 216   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 217   --enable-libmodplug      enable ModPlug via libmodplug [no]
 218   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 219   --enable-libnut          enable NUT (de)muxing via libnut,
 220                            native (de)muxer exists [no]
 221   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 222   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 223   --enable-libopencv       enable video filtering via libopencv [no]
 224   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 225   --enable-libopus         enable Opus de/encoding via libopus [no]
 226   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 227   --enable-libquvi         enable quvi input via libquvi [no]
 228   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 229   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 230   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 231   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 232   --enable-libsoxr         enable Include libsoxr resampling [no]
 233   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 234   --enable-libssh          enable SFTP protocol via libssh [no]
 235   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 236   --enable-libtheora       enable Theora encoding via libtheora [no]
 237   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 238   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 239   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 240   --enable-libvidstab      enable video stabilization using vid.stab [no]
 241   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 242   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 243   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 244                            native implementation exists [no]
 245   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 246   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 247   --enable-libwebp         enable WebP encoding via libwebp [no]
 248   --enable-libx264         enable H.264 encoding via x264 [no]
 249   --enable-libx265         enable HEVC encoding via x265 [no]
 250   --enable-libxavs         enable AVS encoding via xavs [no]
 251   --enable-libxvid         enable Xvid encoding via xvidcore,
 252                            native MPEG-4/Xvid encoder exists [no]
 253   --enable-libzmq          enable message passing via libzmq [no]
 254   --enable-libzvbi         enable teletext support via libzvbi [no]
 255   --enable-decklink        enable Blackmagick DeckLink output [no]
 256   --enable-openal          enable OpenAL 1.1 capture support [no]
 257   --enable-opencl          enable OpenCL code
 258   --enable-opengl          enable OpenGL rendering [no]
 259   --enable-openssl         enable openssl [no]
 260   --enable-x11grab         enable X11 grabbing [no]
 261   --disable-xlib           disable xlib [autodetect]
 262   --disable-zlib           disable zlib [autodetect]
 263
 264 Toolchain options:
 265   --arch=ARCH              select architecture [$arch]
 266   --cpu=CPU                select the minimum required CPU (affects
 267                            instruction selection, may crash on older CPUs)
 268   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 269   --progs-suffix=SUFFIX    program name suffix []
 270   --enable-cross-compile   assume a cross-compiler is used
 271   --sysroot=PATH           root of cross-build tree
 272   --sysinclude=PATH        location of cross-build system headers
 273   --target-os=OS           compiler targets OS [$target_os]
 274   --target-exec=CMD        command to run executables on target
 275   --target-path=DIR        path to view of build directory on target
 276   --target-samples=DIR     path to samples directory on target
 277   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 278   --toolchain=NAME         set tool defaults according to NAME
 279   --nm=NM                  use nm tool NM [$nm_default]
 280   --ar=AR                  use archive tool AR [$ar_default]
 281   --as=AS                  use assembler AS [$as_default]
 282   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 283   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 284   --cc=CC                  use C compiler CC [$cc_default]
 285   --cxx=CXX                use C compiler CXX [$cxx_default]
 286   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 287   --ld=LD                  use linker LD [$ld_default]
 288   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 289   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 290   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 291   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 292   --host-cc=HOSTCC         use host C compiler HOSTCC
 293   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 294   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 295   --host-ld=HOSTLD         use host linker HOSTLD
 296   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 297   --host-libs=HLIBS        use libs HLIBS when linking for host
 298   --host-os=OS             compiler host OS [$target_os]
 299   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 300   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 301   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 302   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 303   --extra-version=STRING   version string suffix []
 304   --optflags=OPTFLAGS      override optimization-related compiler flags
 305   --build-suffix=SUFFIX    library name suffix []
 306   --enable-pic             build position-independent code
 307   --enable-thumb           compile for Thumb instruction set
 308   --enable-lto             use link-time optimization
 309
 310 Advanced options (experts only):
 311   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 312   --disable-symver         disable symbol versioning
 313   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 314   --disable-safe-bitstream-reader
 315                            disable buffer boundary checking in bitreaders
 316                            (faster, but may crash)
 317   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 318   --enable-sram            allow use of on-chip SRAM
 319   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 320
 321 Optimization options (experts only):
 322   --disable-asm            disable all assembly optimizations
 323   --disable-altivec        disable AltiVec optimizations
 324   --disable-amd3dnow       disable 3DNow! optimizations
 325   --disable-amd3dnowext    disable 3DNow! extended optimizations
 326   --disable-mmx            disable MMX optimizations
 327   --disable-mmxext         disable MMXEXT optimizations
 328   --disable-sse            disable SSE optimizations
 329   --disable-sse2           disable SSE2 optimizations
 330   --disable-sse3           disable SSE3 optimizations
 331   --disable-ssse3          disable SSSE3 optimizations
 332   --disable-sse4           disable SSE4 optimizations
 333   --disable-sse42          disable SSE4.2 optimizations
 334   --disable-avx            disable AVX optimizations
 335   --disable-xop            disable XOP optimizations
 336   --disable-fma3           disable FMA3 optimizations
 337   --disable-fma4           disable FMA4 optimizations
 338   --disable-avx2           disable AVX2 optimizations
 339   --disable-armv5te        disable armv5te optimizations
 340   --disable-armv6          disable armv6 optimizations
 341   --disable-armv6t2        disable armv6t2 optimizations
 342   --disable-vfp            disable VFP optimizations
 343   --disable-neon           disable NEON optimizations
 344   --disable-inline-asm     disable use of inline assembly
 345   --disable-yasm           disable use of nasm/yasm assembly
 346   --disable-mips32r2       disable MIPS32R2 optimizations
 347   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 348   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 349   --disable-mipsfpu        disable floating point MIPS optimizations
 350   --disable-fast-unaligned consider unaligned accesses slow
 351
 352 Developer options (useful when working on FFmpeg itself):
 353   --disable-debug          disable debugging symbols
 354   --enable-debug=LEVEL     set the debug level [$debuglevel]
 355   --disable-optimizations  disable compiler optimizations
 356   --enable-extra-warnings  enable more compiler warnings
 357   --disable-stripping      disable stripping of executables and shared libraries
 358   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 359                            2 causes a slowdown at runtime.
 360   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 361   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 362                            leaks and errors, using the specified valgrind binary.
 363                            Cannot be combined with --target-exec
 364   --enable-ftrapv          Trap arithmetic overflows
 365   --samples=PATH           location of test samples for FATE, if not set use
 366                            \$FATE_SAMPLES at make invocation time.
 367   --enable-neon-clobber-test check NEON registers for clobbering (should be
 368                            used only for debugging purposes)
 369   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 370                            should be used only for debugging purposes)
 371   --enable-random          randomly enable/disable components
 372   --disable-random
 373   --enable-random=LIST     randomly enable/disable specific components or
 374   --disable-random=LIST    component groups. LIST is a comma-separated list
 375                            of NAME[:PROB] entries where NAME is a component
 376                            (group) and PROB the probability associated with
 377                            NAME (default 0.5).
 378   --random-seed=VALUE      seed value for --enable/disable-random
 379
 380 NOTE: Object files are built at the place where configure is launched.
 381 EOF
 382   exit 0
 383 }
 384
 385 quotes='""'
 386
 387 log(){
 388     echo "$@" >> $logfile
 389 }
 390
 391 log_file(){
 392     log BEGIN $1
 393     pr -n -t $1 >> $logfile
 394     log END $1
 395 }
 396
 397 echolog(){
 398     log "$@"
 399     echo "$@"
 400 }
 401
 402 warn(){
 403     log "WARNING: $*"
 404     WARNINGS="${WARNINGS}WARNING: $*\n"
 405 }
 406
 407 die(){
 408     echolog "$@"
 409     cat <<EOF
 410
 411 If you think configure made a mistake, make sure you are using the latest
 412 version from Git.  If the latest version fails, report the problem to the
 413 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 414 EOF
 415     if disabled logging; then
 416         cat <<EOF
 417 Rerun configure with logging enabled (do not use --disable-logging), and
 418 include the log this produces with your report.
 419 EOF
 420     else
 421         cat <<EOF
 422 Include the log file "$logfile" produced by configure as this will help
 423 solve the problem.
 424 EOF
 425     fi
 426     exit 1
 427 }
 428
 429 # Avoid locale weirdness, besides we really just want to translate ASCII.
 430 toupper(){
 431     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 432 }
 433
 434 tolower(){
 435     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 436 }
 437
 438 c_escape(){
 439     echo "$*" | sed 's/["\\]/\\\0/g'
 440 }
 441
 442 sh_quote(){
 443     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 444     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 445     echo "$v"
 446 }
 447
 448 cleanws(){
 449     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 450 }
 451
 452 filter(){
 453     pat=$1
 454     shift
 455     for v; do
 456         eval "case $v in $pat) echo $v ;; esac"
 457     done
 458 }
 459
 460 filter_out(){
 461     pat=$1
 462     shift
 463     for v; do
 464         eval "case $v in $pat) ;; *) echo $v ;; esac"
 465     done
 466 }
 467
 468 map(){
 469     m=$1
 470     shift
 471     for v; do eval $m; done
 472 }
 473
 474 add_suffix(){
 475     suffix=$1
 476     shift
 477     for v; do echo ${v}${suffix}; done
 478 }
 479
 480 set_all(){
 481     value=$1
 482     shift
 483     for var in $*; do
 484         eval $var=$value
 485     done
 486 }
 487
 488 set_weak(){
 489     value=$1
 490     shift
 491     for var; do
 492         eval : \${$var:=$value}
 493     done
 494 }
 495
 496 sanitize_var_name(){
 497     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 498 }
 499
 500 set_safe(){
 501     var=$1
 502     shift
 503     eval $(sanitize_var_name "$var")='$*'
 504 }
 505
 506 get_safe(){
 507     eval echo \$$(sanitize_var_name "$1")
 508 }
 509
 510 pushvar(){
 511     for pvar in $*; do
 512         eval level=\${${pvar}_level:=0}
 513         eval ${pvar}_${level}="\$$pvar"
 514         eval ${pvar}_level=$(($level+1))
 515     done
 516 }
 517
 518 popvar(){
 519     for pvar in $*; do
 520         eval level=\${${pvar}_level:-0}
 521         test $level = 0 && continue
 522         eval level=$(($level-1))
 523         eval $pvar="\${${pvar}_${level}}"
 524         eval ${pvar}_level=$level
 525         eval unset ${pvar}_${level}
 526     done
 527 }
 528
 529 enable(){
 530     set_all yes $*
 531 }
 532
 533 disable(){
 534     set_all no $*
 535 }
 536
 537 enable_weak(){
 538     set_weak yes $*
 539 }
 540
 541 disable_weak(){
 542     set_weak no $*
 543 }
 544
 545 enable_safe(){
 546     for var; do
 547         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 548     done
 549 }
 550
 551 disable_safe(){
 552     for var; do
 553         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 554     done
 555 }
 556
 557 do_enable_deep(){
 558     for var; do
 559         enabled $var && continue
 560         eval sel="\$${var}_select"
 561         eval sgs="\$${var}_suggest"
 562         pushvar var sgs
 563         enable_deep $sel
 564         popvar sgs
 565         enable_deep_weak $sgs
 566         popvar var
 567     done
 568 }
 569
 570 enable_deep(){
 571     do_enable_deep $*
 572     enable $*
 573 }
 574
 575 enable_deep_weak(){
 576     for var; do
 577         disabled $var && continue
 578         pushvar var
 579         do_enable_deep $var
 580         popvar var
 581         enable_weak $var
 582     done
 583 }
 584
 585 enabled(){
 586     test "${1#!}" = "$1" && op== || op=!=
 587     eval test "x\$${1#!}" $op "xyes"
 588 }
 589
 590 disabled(){
 591     test "${1#!}" = "$1" && op== || op=!=
 592     eval test "x\$${1#!}" $op "xno"
 593 }
 594
 595 enabled_all(){
 596     for opt; do
 597         enabled $opt || return 1
 598     done
 599 }
 600
 601 disabled_all(){
 602     for opt; do
 603         disabled $opt || return 1
 604     done
 605 }
 606
 607 enabled_any(){
 608     for opt; do
 609         enabled $opt && return 0
 610     done
 611 }
 612
 613 disabled_any(){
 614     for opt; do
 615         disabled $opt && return 0
 616     done
 617     return 1
 618 }
 619
 620 set_default(){
 621     for opt; do
 622         eval : \${$opt:=\$${opt}_default}
 623     done
 624 }
 625
 626 is_in(){
 627     value=$1
 628     shift
 629     for var in $*; do
 630         [ $var = $value ] && return 0
 631     done
 632     return 1
 633 }
 634
 635 do_check_deps(){
 636     for cfg; do
 637         cfg="${cfg#!}"
 638         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 639         disabled ${cfg}_checking && continue
 640         enable ${cfg}_checking
 641         append allopts $cfg
 642
 643         eval dep_all="\$${cfg}_deps"
 644         eval dep_any="\$${cfg}_deps_any"
 645         eval dep_sel="\$${cfg}_select"
 646         eval dep_sgs="\$${cfg}_suggest"
 647         eval dep_ifa="\$${cfg}_if"
 648         eval dep_ifn="\$${cfg}_if_any"
 649
 650         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 651         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 652         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 653
 654         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 655         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 656         enabled_all  $dep_all || disable $cfg
 657         enabled_any  $dep_any || disable $cfg
 658         disabled_any $dep_sel && disable $cfg
 659
 660         if enabled $cfg; then
 661             enable_deep $dep_sel
 662             enable_deep_weak $dep_sgs
 663         fi
 664
 665         disable ${cfg}_checking
 666     done
 667 }
 668
 669 check_deps(){
 670     unset allopts
 671
 672     do_check_deps "$@"
 673
 674     for cfg in $allopts; do
 675         enabled $cfg || continue
 676         eval dep_extralibs="\$${cfg}_extralibs"
 677         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 678     done
 679 }
 680
 681 print_config(){
 682     pfx=$1
 683     files=$2
 684     shift 2
 685     map 'eval echo "$v \${$v:-no}"' "$@" |
 686     awk "BEGIN { split(\"$files\", files) }
 687         {
 688             c = \"$pfx\" toupper(\$1);
 689             v = \$2;
 690             sub(/yes/, 1, v);
 691             sub(/no/,  0, v);
 692             for (f in files) {
 693                 file = files[f];
 694                 if (file ~ /\\.h\$/) {
 695                     printf(\"#define %s %d\\n\", c, v) >>file;
 696                 } else if (file ~ /\\.asm\$/) {
 697                     printf(\"%%define %s %d\\n\", c, v) >>file;
 698                 } else if (file ~ /\\.mak\$/) {
 699                     n = -v ? \"\" : \"!\";
 700                     printf(\"%s%s=yes\\n\", n, c) >>file;
 701                 } else if (file ~ /\\.texi\$/) {
 702                     pre = -v ? \"\" : \"@c \";
 703                     yesno = \$2;
 704                     c2 = tolower(c);
 705                     gsub(/_/, \"-\", c2);
 706                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 707                 }
 708             }
 709         }"
 710 }
 711
 712 print_enabled(){
 713     suf=$1
 714     shift
 715     for v; do
 716         enabled $v && printf "%s\n" ${v%$suf};
 717     done
 718 }
 719
 720 append(){
 721     var=$1
 722     shift
 723     eval "$var=\"\$$var $*\""
 724 }
 725
 726 prepend(){
 727     var=$1
 728     shift
 729     eval "$var=\"$* \$$var\""
 730 }
 731
 732 unique(){
 733     var=$1
 734     uniq_list=""
 735     for tok in $(eval echo \$$var); do
 736         uniq_list="$(filter_out $tok $uniq_list) $tok"
 737     done
 738     eval "$var=\"${uniq_list}\""
 739 }
 740
 741 add_cppflags(){
 742     append CPPFLAGS "$@"
 743 }
 744
 745 add_cflags(){
 746     append CFLAGS $($cflags_filter "$@")
 747 }
 748
 749 add_cxxflags(){
 750     append CXXFLAGS $($cflags_filter "$@")
 751 }
 752
 753 add_asflags(){
 754     append ASFLAGS $($asflags_filter "$@")
 755 }
 756
 757 add_ldflags(){
 758     append LDFLAGS $($ldflags_filter "$@")
 759 }
 760
 761 add_stripflags(){
 762     append ASMSTRIPFLAGS "$@"
 763 }
 764
 765 add_extralibs(){
 766     prepend extralibs $($ldflags_filter "$@")
 767 }
 768
 769 add_host_cppflags(){
 770     append host_cppflags "$@"
 771 }
 772
 773 add_host_cflags(){
 774     append host_cflags $($host_cflags_filter "$@")
 775 }
 776
 777 add_host_ldflags(){
 778     append host_ldflags $($host_ldflags_filter "$@")
 779 }
 780
 781 add_compat(){
 782     append compat_objs $1
 783     shift
 784     map 'add_cppflags -D$v' "$@"
 785 }
 786
 787 check_cmd(){
 788     log "$@"
 789     "$@" >> $logfile 2>&1
 790 }
 791
 792 check_stat(){
 793     log check_stat "$@"
 794     stat "$1" >> $logfile 2>&1
 795 }
 796
 797 cc_o(){
 798     eval printf '%s\\n' $CC_O
 799 }
 800
 801 cc_e(){
 802     eval printf '%s\\n' $CC_E
 803 }
 804
 805 check_cc(){
 806     log check_cc "$@"
 807     cat > $TMPC
 808     log_file $TMPC
 809     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 810 }
 811
 812 check_cxx(){
 813     log check_cxx "$@"
 814     cat > $TMPCPP
 815     log_file $TMPCPP
 816     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 817 }
 818
 819 check_oc(){
 820     log check_oc "$@"
 821     cat > $TMPM
 822     log_file $TMPM
 823     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 824 }
 825
 826 check_cpp(){
 827     log check_cpp "$@"
 828     cat > $TMPC
 829     log_file $TMPC
 830     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 831 }
 832
 833 as_o(){
 834     eval printf '%s\\n' $AS_O
 835 }
 836
 837 check_as(){
 838     log check_as "$@"
 839     cat > $TMPS
 840     log_file $TMPS
 841     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 842 }
 843
 844 check_inline_asm(){
 845     log check_inline_asm "$@"
 846     name="$1"
 847     code="$2"
 848     shift 2
 849     disable $name
 850     check_cc "$@" <<EOF && enable $name
 851 void foo(void){ __asm__ volatile($code); }
 852 EOF
 853 }
 854
 855 check_insn(){
 856     log check_insn "$@"
 857     check_inline_asm ${1}_inline "\"$2\""
 858     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 859 }
 860
 861 check_yasm(){
 862     log check_yasm "$@"
 863     echo "$1" > $TMPS
 864     log_file $TMPS
 865     shift 1
 866     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 867 }
 868
 869 ld_o(){
 870     eval printf '%s\\n' $LD_O
 871 }
 872
 873 check_ld(){
 874     log check_ld "$@"
 875     type=$1
 876     shift 1
 877     flags=$(filter_out '-l*|*.so' $@)
 878     libs=$(filter '-l*|*.so' $@)
 879     check_$type $($cflags_filter $flags) || return
 880     flags=$($ldflags_filter $flags)
 881     libs=$($ldflags_filter $libs)
 882     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 883 }
 884
 885 print_include(){
 886     hdr=$1
 887     test "${hdr%.h}" = "${hdr}" &&
 888         echo "#include $hdr"    ||
 889         echo "#include <$hdr>"
 890 }
 891
 892 check_code(){
 893     log check_code "$@"
 894     check=$1
 895     headers=$2
 896     code=$3
 897     shift 3
 898     {
 899         for hdr in $headers; do
 900             print_include $hdr
 901         done
 902         echo "int main(void) { $code; return 0; }"
 903     } | check_$check "$@"
 904 }
 905
 906 check_cppflags(){
 907     log check_cppflags "$@"
 908     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 909 int x;
 910 EOF
 911 }
 912
 913 test_cflags(){
 914     log test_cflags "$@"
 915     set -- $($cflags_filter "$@")
 916     check_cc "$@" <<EOF
 917 int x;
 918 EOF
 919 }
 920
 921 check_cflags(){
 922     log check_cflags "$@"
 923     test_cflags "$@" && add_cflags "$@"
 924 }
 925
 926 check_cxxflags(){
 927     log check_cxxflags "$@"
 928     set -- $($cflags_filter "$@")
 929     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 930 int x;
 931 EOF
 932 }
 933
 934 test_ldflags(){
 935     log test_ldflags "$@"
 936     check_ld "cc" "$@" <<EOF
 937 int main(void){ return 0; }
 938 EOF
 939 }
 940
 941 check_ldflags(){
 942     log check_ldflags "$@"
 943     test_ldflags "$@" && add_ldflags "$@"
 944 }
 945
 946 test_stripflags(){
 947     log test_stripflags "$@"
 948     # call check_cc to get a fresh TMPO
 949     check_cc <<EOF
 950 int main(void) { return 0; }
 951 EOF
 952     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 953 }
 954
 955 check_stripflags(){
 956     log check_stripflags "$@"
 957     test_stripflags "$@" && add_stripflags "$@"
 958 }
 959
 960 check_header(){
 961     log check_header "$@"
 962     header=$1
 963     shift
 964     disable_safe $header
 965     check_cpp "$@" <<EOF && enable_safe $header
 966 #include <$header>
 967 int x;
 968 EOF
 969 }
 970
 971 check_header_oc(){
 972     log check_header_oc "$@"
 973     rm -f -- "$TMPO"
 974     header=$1
 975     shift
 976     disable_safe $header
 977     {
 978        echo "#include <$header>"
 979        echo "int main(void) { return 0; }"
 980     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 981 }
 982
 983 check_func(){
 984     log check_func "$@"
 985     func=$1
 986     shift
 987     disable $func
 988     check_ld "cc" "$@" <<EOF && enable $func
 989 extern int $func();
 990 int main(void){ $func(); }
 991 EOF
 992 }
 993
 994 check_mathfunc(){
 995     log check_mathfunc "$@"
 996     func=$1
 997     narg=$2
 998     shift 2
 999     test $narg = 2 && args="f, g" || args="f"
1000     disable $func
1001     check_ld "cc" "$@" <<EOF && enable $func
1002 #include <math.h>
1003 float foo(float f, float g) { return $func($args); }
1004 int main(void){ return (int) foo; }
1005 EOF
1006 }
1007
1008 check_func_headers(){
1009     log check_func_headers "$@"
1010     headers=$1
1011     funcs=$2
1012     shift 2
1013     {
1014         for hdr in $headers; do
1015             print_include $hdr
1016         done
1017         for func in $funcs; do
1018             echo "long check_$func(void) { return (long) $func; }"
1019         done
1020         echo "int main(void) { return 0; }"
1021     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1022 }
1023
1024 check_class_headers_cpp(){
1025     log check_class_headers_cpp "$@"
1026     headers=$1
1027     classes=$2
1028     shift 2
1029     {
1030         for hdr in $headers; do
1031             echo "#include <$hdr>"
1032         done
1033         echo "int main(void) { "
1034         i=1
1035         for class in $classes; do
1036             echo "$class obj$i;"
1037             i=$(expr $i + 1)
1038         done
1039         echo "return 0; }"
1040     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_cpp_condition(){
1044     log check_cpp_condition "$@"
1045     header=$1
1046     condition=$2
1047     shift 2
1048     check_cpp "$@" <<EOF
1049 #include <$header>
1050 #if !($condition)
1051 #error "unsatisfied condition: $condition"
1052 #endif
1053 EOF
1054 }
1055
1056 check_lib(){
1057     log check_lib "$@"
1058     header="$1"
1059     func="$2"
1060     shift 2
1061     check_header $header && check_func $func "$@" && add_extralibs "$@"
1062 }
1063
1064 check_lib2(){
1065     log check_lib2 "$@"
1066     headers="$1"
1067     funcs="$2"
1068     shift 2
1069     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib_cpp(){
1073     log check_lib_cpp "$@"
1074     headers="$1"
1075     classes="$2"
1076     shift 2
1077     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_pkg_config(){
1081     log check_pkg_config "$@"
1082     pkgandversion="$1"
1083     pkg="${1%% *}"
1084     headers="$2"
1085     funcs="$3"
1086     shift 3
1087     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1088     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1089     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1090     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1091         set_safe ${pkg}_cflags $pkg_cflags   &&
1092         set_safe ${pkg}_libs   $pkg_libs
1093 }
1094
1095 check_exec(){
1096     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1097 }
1098
1099 check_exec_crash(){
1100     code=$(cat)
1101
1102     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1103     # are safe but may not be available everywhere.  Thus we use
1104     # raise(SIGTERM) instead.  The check is run in a subshell so we
1105     # can redirect the "Terminated" message from the shell.  SIGBUS
1106     # is not defined by standard C so it is used conditionally.
1107
1108     (check_exec "$@") >> $logfile 2>&1 <<EOF
1109 #include <signal.h>
1110 static void sighandler(int sig){
1111     raise(SIGTERM);
1112 }
1113 int foo(void){
1114     $code
1115 }
1116 int (*func_ptr)(void) = foo;
1117 int main(void){
1118     signal(SIGILL, sighandler);
1119     signal(SIGFPE, sighandler);
1120     signal(SIGSEGV, sighandler);
1121 #ifdef SIGBUS
1122     signal(SIGBUS, sighandler);
1123 #endif
1124     return func_ptr();
1125 }
1126 EOF
1127 }
1128
1129 check_type(){
1130     log check_type "$@"
1131     headers=$1
1132     type=$2
1133     shift 2
1134     disable_safe "$type"
1135     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1136 }
1137
1138 check_struct(){
1139     log check_struct "$@"
1140     headers=$1
1141     struct=$2
1142     member=$3
1143     shift 3
1144     disable_safe "${struct}_${member}"
1145     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1146         enable_safe "${struct}_${member}"
1147 }
1148
1149 check_builtin(){
1150     log check_builtin "$@"
1151     name=$1
1152     headers=$2
1153     builtin=$3
1154     shift 3
1155     disable "$name"
1156     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1157 }
1158
1159 check_compile_assert(){
1160     log check_compile_assert "$@"
1161     name=$1
1162     headers=$2
1163     condition=$3
1164     shift 3
1165     disable "$name"
1166     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1167 }
1168
1169 require(){
1170     name="$1"
1171     header="$2"
1172     func="$3"
1173     shift 3
1174     check_lib $header $func "$@" || die "ERROR: $name not found"
1175 }
1176
1177 require2(){
1178     name="$1"
1179     headers="$2"
1180     func="$3"
1181     shift 3
1182     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require_cpp(){
1186     name="$1"
1187     headers="$2"
1188     classes="$3"
1189     shift 3
1190     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_pkg_config(){
1194     pkg="$1"
1195     check_pkg_config "$@" || die "ERROR: $pkg not found"
1196     add_cflags    $(get_safe ${pkg}_cflags)
1197     add_extralibs $(get_safe ${pkg}_libs)
1198 }
1199
1200 require_libfreetype(){
1201     log require_libfreetype "$@"
1202     pkg="freetype2"
1203     check_cmd $pkg_config --exists --print-errors $pkg \
1204       || die "ERROR: $pkg not found"
1205     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1206     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1207     {
1208         echo "#include <ft2build.h>"
1209         echo "#include FT_FREETYPE_H"
1210         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1211         echo "int main(void) { return 0; }"
1212     } | check_ld "cc" $pkg_cflags $pkg_libs \
1213       && set_safe ${pkg}_cflags $pkg_cflags \
1214       && set_safe ${pkg}_libs   $pkg_libs \
1215       || die "ERROR: $pkg not found"
1216     add_cflags    $(get_safe ${pkg}_cflags)
1217     add_extralibs $(get_safe ${pkg}_libs)
1218 }
1219
1220 hostcc_e(){
1221     eval printf '%s\\n' $HOSTCC_E
1222 }
1223
1224 hostcc_o(){
1225     eval printf '%s\\n' $HOSTCC_O
1226 }
1227
1228 check_host_cc(){
1229     log check_host_cc "$@"
1230     cat > $TMPC
1231     log_file $TMPC
1232     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1233 }
1234
1235 check_host_cpp(){
1236     log check_host_cpp "$@"
1237     cat > $TMPC
1238     log_file $TMPC
1239     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1240 }
1241
1242 check_host_cppflags(){
1243     log check_host_cppflags "$@"
1244     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1245 int x;
1246 EOF
1247 }
1248
1249 check_host_cflags(){
1250     log check_host_cflags "$@"
1251     set -- $($host_cflags_filter "$@")
1252     check_host_cc "$@" <<EOF && append host_cflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cpp_condition(){
1258     log check_host_cpp_condition "$@"
1259     header=$1
1260     condition=$2
1261     shift 2
1262     check_host_cpp "$@" <<EOF
1263 #include <$header>
1264 #if !($condition)
1265 #error "unsatisfied condition: $condition"
1266 #endif
1267 EOF
1268 }
1269
1270 apply(){
1271     file=$1
1272     shift
1273     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1274 }
1275
1276 cp_if_changed(){
1277     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1278     mkdir -p "$(dirname $2)"
1279     $cp_f "$1" "$2"
1280 }
1281
1282 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1283 # system-dependent things.
1284
1285 COMPONENT_LIST="
1286     bsfs
1287     decoders
1288     demuxers
1289     encoders
1290     filters
1291     hwaccels
1292     indevs
1293     muxers
1294     outdevs
1295     parsers
1296     protocols
1297 "
1298
1299 EXAMPLE_LIST="
1300     avio_reading_example
1301     decoding_encoding_example
1302     demuxing_decoding_example
1303     filter_audio_example
1304     filtering_audio_example
1305     filtering_video_example
1306     metadata_example
1307     muxing_example
1308     remuxing_example
1309     resampling_audio_example
1310     scaling_video_example
1311     transcode_aac_example
1312     transcoding_example
1313 "
1314
1315 EXTERNAL_LIBRARY_LIST="
1316     avisynth
1317     bzlib
1318     crystalhd
1319     decklink
1320     frei0r
1321     gnutls
1322     iconv
1323     ladspa
1324     libaacplus
1325     libass
1326     libbluray
1327     libbs2b
1328     libcaca
1329     libcdio
1330     libcelt
1331     libdc1394
1332     libfaac
1333     libfdk_aac
1334     libflite
1335     libfontconfig
1336     libfreetype
1337     libfribidi
1338     libgme
1339     libgsm
1340     libiec61883
1341     libilbc
1342     libmodplug
1343     libmp3lame
1344     libnut
1345     libopencore_amrnb
1346     libopencore_amrwb
1347     libopencv
1348     libopenjpeg
1349     libopus
1350     libpulse
1351     libquvi
1352     librtmp
1353     libschroedinger
1354     libshine
1355     libsmbclient
1356     libsoxr
1357     libspeex
1358     libssh
1359     libstagefright_h264
1360     libtheora
1361     libtwolame
1362     libutvideo
1363     libv4l2
1364     libvidstab
1365     libvo_aacenc
1366     libvo_amrwbenc
1367     libvorbis
1368     libvpx
1369     libwavpack
1370     libwebp
1371     libx264
1372     libx265
1373     libxavs
1374     libxvid
1375     libzmq
1376     libzvbi
1377     openal
1378     opencl
1379     opengl
1380     openssl
1381     x11grab
1382     xlib
1383     zlib
1384 "
1385
1386 DOCUMENT_LIST="
1387     doc
1388     htmlpages
1389     manpages
1390     podpages
1391     txtpages
1392 "
1393
1394 FEATURE_LIST="
1395     ftrapv
1396     gray
1397     hardcoded_tables
1398     runtime_cpudetect
1399     safe_bitstream_reader
1400     shared
1401     small
1402     sram
1403     static
1404     swscale_alpha
1405 "
1406
1407 HWACCEL_LIST="
1408     dxva2
1409     vaapi
1410     vda
1411     vdpau
1412     xvmc
1413 "
1414
1415 LIBRARY_LIST="
1416     avcodec
1417     avdevice
1418     avfilter
1419     avformat
1420     avresample
1421     avutil
1422     postproc
1423     swresample
1424     swscale
1425 "
1426
1427 LICENSE_LIST="
1428     gpl
1429     nonfree
1430     version3
1431 "
1432
1433 PROGRAM_LIST="
1434     ffplay
1435     ffprobe
1436     ffserver
1437     ffmpeg
1438 "
1439
1440 SUBSYSTEM_LIST="
1441     dct
1442     dwt
1443     error_resilience
1444     fast_unaligned
1445     fft
1446     lsp
1447     lzo
1448     mdct
1449     network
1450     rdft
1451 "
1452
1453 CONFIG_LIST="
1454     $COMPONENT_LIST
1455     $DOCUMENT_LIST
1456     $EXAMPLE_LIST
1457     $EXTERNAL_LIBRARY_LIST
1458     $FEATURE_LIST
1459     $HWACCEL_LIST
1460     $LICENSE_LIST
1461     $LIBRARY_LIST
1462     $PROGRAM_LIST
1463     $SUBSYSTEM_LIST
1464     fontconfig
1465     incompatible_libav_abi
1466     memalign_hack
1467     memory_poisoning
1468     neon_clobber_test
1469     pic
1470     pod2man
1471     raise_major
1472     thumb
1473     xmm_clobber_test
1474 "
1475
1476 THREADS_LIST="
1477     pthreads
1478     os2threads
1479     w32threads
1480 "
1481
1482 ATOMICS_LIST="
1483     atomics_gcc
1484     atomics_suncc
1485     atomics_win32
1486 "
1487
1488 ARCH_LIST="
1489     aarch64
1490     alpha
1491     arm
1492     avr32
1493     avr32_ap
1494     avr32_uc
1495     bfin
1496     ia64
1497     m68k
1498     mips
1499     mips64
1500     parisc
1501     ppc
1502     ppc64
1503     s390
1504     sh4
1505     sparc
1506     sparc64
1507     tilegx
1508     tilepro
1509     tomi
1510     x86
1511     x86_32
1512     x86_64
1513 "
1514
1515 ARCH_EXT_LIST_ARM="
1516     armv5te
1517     armv6
1518     armv6t2
1519     armv8
1520     neon
1521     vfp
1522     vfpv3
1523 "
1524
1525 ARCH_EXT_LIST_MIPS="
1526     mipsfpu
1527     mips32r2
1528     mipsdspr1
1529     mipsdspr2
1530 "
1531
1532 ARCH_EXT_LIST_X86_SIMD="
1533     amd3dnow
1534     amd3dnowext
1535     avx
1536     avx2
1537     fma3
1538     fma4
1539     mmx
1540     mmxext
1541     sse
1542     sse2
1543     sse3
1544     sse4
1545     sse42
1546     ssse3
1547     xop
1548 "
1549
1550 ARCH_EXT_LIST_PPC="
1551     altivec
1552     dcbzl
1553     ldbrx
1554     ppc4xx
1555     vsx
1556 "
1557
1558 ARCH_EXT_LIST_X86="
1559     $ARCH_EXT_LIST_X86_SIMD
1560     cpunop
1561     i686
1562 "
1563
1564 ARCH_EXT_LIST="
1565     $ARCH_EXT_LIST_ARM
1566     $ARCH_EXT_LIST_PPC
1567     $ARCH_EXT_LIST_X86
1568     $ARCH_EXT_LIST_MIPS
1569     loongson
1570 "
1571
1572 ARCH_FEATURES="
1573     aligned_stack
1574     fast_64bit
1575     fast_clz
1576     fast_cmov
1577     local_aligned_8
1578     local_aligned_16
1579     local_aligned_32
1580 "
1581
1582 BUILTIN_LIST="
1583     atomic_cas_ptr
1584     machine_rw_barrier
1585     MemoryBarrier
1586     mm_empty
1587     rdtsc
1588     sarestart
1589     sync_val_compare_and_swap
1590 "
1591 HAVE_LIST_CMDLINE="
1592     inline_asm
1593     symver
1594     yasm
1595 "
1596
1597 HAVE_LIST_PUB="
1598     bigendian
1599     fast_unaligned
1600     incompatible_libav_abi
1601 "
1602
1603 HEADERS_LIST="
1604     alsa_asoundlib_h
1605     altivec_h
1606     arpa_inet_h
1607     asm_types_h
1608     cdio_paranoia_h
1609     cdio_paranoia_paranoia_h
1610     CL_cl_h
1611     dev_bktr_ioctl_bt848_h
1612     dev_bktr_ioctl_meteor_h
1613     dev_ic_bt8xx_h
1614     dev_video_bktr_ioctl_bt848_h
1615     dev_video_meteor_ioctl_meteor_h
1616     direct_h
1617     dlfcn_h
1618     dxva_h
1619     ES2_gl_h
1620     gsm_h
1621     io_h
1622     mach_mach_time_h
1623     machine_ioctl_bt848_h
1624     machine_ioctl_meteor_h
1625     malloc_h
1626     openjpeg_1_5_openjpeg_h
1627     OpenGL_gl3_h
1628     poll_h
1629     sndio_h
1630     soundcard_h
1631     sys_mman_h
1632     sys_param_h
1633     sys_resource_h
1634     sys_select_h
1635     sys_soundcard_h
1636     sys_time_h
1637     sys_un_h
1638     sys_videoio_h
1639     termios_h
1640     unistd_h
1641     windows_h
1642     winsock2_h
1643 "
1644
1645 MATH_FUNCS="
1646     atanf
1647     atan2f
1648     cbrt
1649     cbrtf
1650     cosf
1651     exp2
1652     exp2f
1653     expf
1654     fminf
1655     isinf
1656     isnan
1657     ldexpf
1658     llrint
1659     llrintf
1660     log2
1661     log2f
1662     log10f
1663     lrint
1664     lrintf
1665     powf
1666     rint
1667     round
1668     roundf
1669     sinf
1670     trunc
1671     truncf
1672 "
1673
1674 SYSTEM_FUNCS="
1675     access
1676     aligned_malloc
1677     clock_gettime
1678     closesocket
1679     CommandLineToArgvW
1680     CoTaskMemFree
1681     CryptGenRandom
1682     dlopen
1683     fcntl
1684     flt_lim
1685     fork
1686     getaddrinfo
1687     gethrtime
1688     getopt
1689     GetProcessAffinityMask
1690     GetProcessMemoryInfo
1691     GetProcessTimes
1692     getrusage
1693     getservbyport
1694     GetSystemTimeAsFileTime
1695     gettimeofday
1696     glob
1697     glXGetProcAddress
1698     inet_aton
1699     isatty
1700     jack_port_get_latency_range
1701     kbhit
1702     localtime_r
1703     lzo1x_999_compress
1704     mach_absolute_time
1705     MapViewOfFile
1706     memalign
1707     mkstemp
1708     mmap
1709     mprotect
1710     nanosleep
1711     PeekNamedPipe
1712     posix_memalign
1713     pthread_cancel
1714     sched_getaffinity
1715     SetConsoleTextAttribute
1716     setmode
1717     setrlimit
1718     Sleep
1719     strerror_r
1720     sysconf
1721     sysctl
1722     usleep
1723     VirtualAlloc
1724     wglGetProcAddress
1725 "
1726
1727 TOOLCHAIN_FEATURES="
1728     as_dn_directive
1729     as_func
1730     asm_mod_q
1731     attribute_may_alias
1732     attribute_packed
1733     ebp_available
1734     ebx_available
1735     gnu_as
1736     gnu_windres
1737     ibm_asm
1738     inline_asm_labels
1739     inline_asm_nonlocal_labels
1740     inline_asm_direct_symbol_refs
1741     pragma_deprecated
1742     rsync_contimeout
1743     symver_asm_label
1744     symver_gnu_asm
1745     vfp_args
1746     xform_asm
1747     xmm_clobbers
1748 "
1749
1750 TYPES_LIST="
1751     socklen_t
1752     struct_addrinfo
1753     struct_group_source_req
1754     struct_ip_mreq_source
1755     struct_ipv6_mreq
1756     struct_pollfd
1757     struct_rusage_ru_maxrss
1758     struct_sctp_event_subscribe
1759     struct_sockaddr_in6
1760     struct_sockaddr_sa_len
1761     struct_sockaddr_storage
1762     struct_stat_st_mtim_tv_nsec
1763     struct_v4l2_frmivalenum_discrete
1764 "
1765
1766 HAVE_LIST="
1767     $ARCH_EXT_LIST
1768     $(add_suffix _external $ARCH_EXT_LIST)
1769     $(add_suffix _inline   $ARCH_EXT_LIST)
1770     $ARCH_FEATURES
1771     $ATOMICS_LIST
1772     $BUILTIN_LIST
1773     $HAVE_LIST_CMDLINE
1774     $HAVE_LIST_PUB
1775     $HEADERS_LIST
1776     $MATH_FUNCS
1777     $SYSTEM_FUNCS
1778     $THREADS_LIST
1779     $TOOLCHAIN_FEATURES
1780     $TYPES_LIST
1781     atomics_native
1782     dos_paths
1783     dxva2api_cobj
1784     dxva2_lib
1785     libc_msvcrt
1786     libdc1394_1
1787     libdc1394_2
1788     makeinfo
1789     perl
1790     pod2man
1791     sdl
1792     texi2html
1793     threads
1794     vdpau_x11
1795     xlib
1796 "
1797
1798 # options emitted with CONFIG_ prefix but not available on the command line
1799 CONFIG_EXTRA="
1800     aandcttables
1801     ac3dsp
1802     audio_frame_queue
1803     audiodsp
1804     blockdsp
1805     bswapdsp
1806     cabac
1807     dvprofile
1808     exif
1809     fdctdsp
1810     frame_thread_encoder
1811     gcrypt
1812     golomb
1813     gplv3
1814     h263dsp
1815     h264chroma
1816     h264dsp
1817     h264pred
1818     h264qpel
1819     hpeldsp
1820     huffman
1821     huffyuvdsp
1822     huffyuvencdsp
1823     idctdsp
1824     iirfilter
1825     intrax8
1826     lgplv3
1827     llauddsp
1828     llviddsp
1829     lpc
1830     me_cmp
1831     mpeg_er
1832     mpegaudio
1833     mpegaudiodsp
1834     mpegvideo
1835     mpegvideoenc
1836     nettle
1837     pixblockdsp
1838     qpeldsp
1839     rangecoder
1840     riffdec
1841     riffenc
1842     rtpdec
1843     rtpenc_chain
1844     sinewin
1845     tpeldsp
1846     videodsp
1847     vp3dsp
1848 "
1849
1850 CMDLINE_SELECT="
1851     $ARCH_EXT_LIST
1852     $CONFIG_LIST
1853     $HAVE_LIST_CMDLINE
1854     $THREADS_LIST
1855     asm
1856     cross_compile
1857     debug
1858     extra_warnings
1859     logging
1860     lto
1861     optimizations
1862     rpath
1863     stripping
1864 "
1865
1866 PATHS_LIST="
1867     bindir
1868     datadir
1869     docdir
1870     incdir
1871     libdir
1872     mandir
1873     prefix
1874     shlibdir
1875 "
1876
1877 CMDLINE_SET="
1878     $PATHS_LIST
1879     ar
1880     arch
1881     as
1882     assert_level
1883     build_suffix
1884     cc
1885     cpu
1886     cross_prefix
1887     cxx
1888     dep_cc
1889     doxygen
1890     extra_version
1891     gas
1892     host_cc
1893     host_cflags
1894     host_ld
1895     host_ldflags
1896     host_libs
1897     host_os
1898     install
1899     ld
1900     logfile
1901     malloc_prefix
1902     nm
1903     optflags
1904     pkg_config
1905     pkg_config_flags
1906     progs_suffix
1907     random_seed
1908     ranlib
1909     samples
1910     strip
1911     sws_max_filter_size
1912     sysinclude
1913     sysroot
1914     target_exec
1915     target_os
1916     target_path
1917     target_samples
1918     tempprefix
1919     toolchain
1920     valgrind
1921     yasmexe
1922 "
1923
1924 CMDLINE_APPEND="
1925     extra_cflags
1926     extra_cxxflags
1927     host_cppflags
1928 "
1929
1930 # code dependency declarations
1931
1932 # architecture extensions
1933
1934 armv5te_deps="arm"
1935 armv6_deps="arm"
1936 armv6t2_deps="arm"
1937 armv8_deps="aarch64"
1938 neon_deps_any="aarch64 arm"
1939 vfp_deps_any="aarch64 arm"
1940 vfpv3_deps="vfp"
1941
1942 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1943
1944 mipsfpu_deps="mips"
1945 mips32r2_deps="mips"
1946 mipsdspr1_deps="mips"
1947 mipsdspr2_deps="mips"
1948
1949 altivec_deps="ppc"
1950 ppc4xx_deps="ppc"
1951 vsx_deps="ppc"
1952
1953 cpunop_deps="i686"
1954 x86_64_select="i686"
1955 x86_64_suggest="fast_cmov"
1956
1957 amd3dnow_deps="mmx"
1958 amd3dnowext_deps="amd3dnow"
1959 i686_deps="x86"
1960 mmx_deps="x86"
1961 mmxext_deps="mmx"
1962 sse_deps="mmxext"
1963 sse2_deps="sse"
1964 sse3_deps="sse2"
1965 ssse3_deps="sse3"
1966 sse4_deps="ssse3"
1967 sse42_deps="sse4"
1968 avx_deps="sse42"
1969 xop_deps="avx"
1970 fma3_deps="avx"
1971 fma4_deps="avx"
1972 avx2_deps="avx"
1973
1974 mmx_external_deps="yasm"
1975 mmx_inline_deps="inline_asm"
1976 mmx_suggest="mmx_external mmx_inline"
1977
1978 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1979     eval dep=\$${ext}_deps
1980     eval ${ext}_external_deps='"${dep}_external"'
1981     eval ${ext}_inline_deps='"${dep}_inline"'
1982     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1983 done
1984
1985 aligned_stack_if_any="aarch64 ppc x86"
1986 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1987 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1988 fast_unaligned_if_any="aarch64 ppc x86"
1989
1990 need_memalign="altivec neon sse"
1991
1992 # system capabilities
1993
1994 symver_if_any="symver_asm_label symver_gnu_asm"
1995
1996 # threading support
1997 atomics_gcc_if="sync_val_compare_and_swap"
1998 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1999 atomics_win32_if="MemoryBarrier"
2000 atomics_native_if_any="$ATOMICS_LIST"
2001 w32threads_deps="atomics_native"
2002 threads_if_any="$THREADS_LIST"
2003
2004 # subsystems
2005 dct_select="rdft"
2006 error_resilience_select="me_cmp"
2007 frame_thread_encoder_deps="encoders threads"
2008 intrax8_select="error_resilience"
2009 mdct_select="fft"
2010 rdft_select="fft"
2011 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2012 mpeg_er_select="error_resilience"
2013 mpegaudio_select="mpegaudiodsp"
2014 mpegaudiodsp_select="dct"
2015 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2016 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2017
2018 # decoders / encoders
2019 aac_decoder_select="mdct sinewin"
2020 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2021 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2022 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2023 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2024 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2025 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2026 aic_decoder_select="golomb idctdsp"
2027 alac_encoder_select="lpc"
2028 als_decoder_select="bswapdsp"
2029 amrnb_decoder_select="lsp"
2030 amrwb_decoder_select="lsp"
2031 amv_decoder_select="sp5x_decoder exif"
2032 amv_encoder_select="aandcttables mpegvideoenc"
2033 ape_decoder_select="bswapdsp llauddsp"
2034 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2035 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2036 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2037 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2038 atrac1_decoder_select="mdct sinewin"
2039 atrac3_decoder_select="mdct"
2040 atrac3p_decoder_select="mdct sinewin"
2041 avrn_decoder_select="exif"
2042 bink_decoder_select="blockdsp hpeldsp"
2043 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2044 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2045 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2046 cllc_decoder_select="bswapdsp"
2047 comfortnoise_encoder_select="lpc"
2048 cook_decoder_select="audiodsp mdct sinewin"
2049 cscd_decoder_select="lzo"
2050 cscd_decoder_suggest="zlib"
2051 dca_decoder_select="mdct"
2052 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2053 dnxhd_decoder_select="blockdsp idctdsp"
2054 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2055 dvvideo_decoder_select="dvprofile idctdsp"
2056 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2057 dxa_decoder_select="zlib"
2058 eac3_decoder_select="ac3_decoder"
2059 eac3_encoder_select="ac3_encoder"
2060 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2061 eatgq_decoder_select="aandcttables"
2062 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2063 exr_decoder_select="zlib"
2064 ffv1_decoder_select="golomb rangecoder"
2065 ffv1_encoder_select="rangecoder"
2066 ffvhuff_decoder_select="huffyuv_decoder"
2067 ffvhuff_encoder_select="huffyuv_encoder"
2068 fic_decoder_select="golomb"
2069 flac_decoder_select="golomb"
2070 flac_encoder_select="bswapdsp golomb lpc"
2071 flashsv_decoder_select="zlib"
2072 flashsv_encoder_select="zlib"
2073 flashsv2_encoder_select="zlib"
2074 flashsv2_decoder_select="zlib"
2075 flv_decoder_select="h263_decoder"
2076 flv_encoder_select="h263_encoder"
2077 fourxm_decoder_select="blockdsp bswapdsp"
2078 fraps_decoder_select="bswapdsp huffman"
2079 g2m_decoder_select="blockdsp idctdsp zlib"
2080 g729_decoder_select="audiodsp"
2081 h261_decoder_select="mpeg_er mpegvideo"
2082 h261_encoder_select="aandcttables mpegvideoenc"
2083 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2084 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2085 h263i_decoder_select="h263_decoder"
2086 h263p_encoder_select="h263_encoder"
2087 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2088 h264_decoder_suggest="error_resilience"
2089 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2090 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2091 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2092 iac_decoder_select="imc_decoder"
2093 imc_decoder_select="bswapdsp fft mdct sinewin"
2094 indeo3_decoder_select="hpeldsp"
2095 interplay_video_decoder_select="hpeldsp"
2096 jpegls_decoder_select="golomb mjpeg_decoder"
2097 jpegls_encoder_select="golomb"
2098 jv_decoder_select="blockdsp"
2099 lagarith_decoder_select="huffyuvdsp"
2100 ljpeg_encoder_select="aandcttables idctdsp"
2101 loco_decoder_select="golomb"
2102 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2103 metasound_decoder_select="lsp mdct sinewin"
2104 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2105 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2106 mjpeg_encoder_select="aandcttables mpegvideoenc"
2107 mjpegb_decoder_select="mjpeg_decoder"
2108 mlp_decoder_select="mlp_parser"
2109 motionpixels_decoder_select="bswapdsp"
2110 mp1_decoder_select="mpegaudio"
2111 mp1float_decoder_select="mpegaudio"
2112 mp2_decoder_select="mpegaudio"
2113 mp2float_decoder_select="mpegaudio"
2114 mp3_decoder_select="mpegaudio"
2115 mp3adu_decoder_select="mpegaudio"
2116 mp3adufloat_decoder_select="mpegaudio"
2117 mp3float_decoder_select="mpegaudio"
2118 mp3on4_decoder_select="mpegaudio"
2119 mp3on4float_decoder_select="mpegaudio"
2120 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2121 mpc8_decoder_select="mpegaudiodsp"
2122 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2123 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2124 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2125 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2126 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2127 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2128 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2129 mpeg4_encoder_select="h263_encoder"
2130 msmpeg4v1_decoder_select="h263_decoder"
2131 msmpeg4v2_decoder_select="h263_decoder"
2132 msmpeg4v2_encoder_select="h263_encoder"
2133 msmpeg4v3_decoder_select="h263_decoder"
2134 msmpeg4v3_encoder_select="h263_encoder"
2135 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2136 mxpeg_decoder_select="mjpeg_decoder"
2137 nellymoser_decoder_select="mdct sinewin"
2138 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2139 nuv_decoder_select="idctdsp lzo"
2140 on2avc_decoder_select="mdct"
2141 opus_decoder_deps="swresample"
2142 png_decoder_select="zlib"
2143 png_encoder_select="huffyuvencdsp zlib"
2144 prores_decoder_select="blockdsp idctdsp"
2145 prores_encoder_select="fdctdsp"
2146 qcelp_decoder_select="lsp"
2147 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2148 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2149 ra_144_decoder_select="audiodsp"
2150 ralf_decoder_select="golomb"
2151 rawvideo_decoder_select="bswapdsp"
2152 rtjpeg_decoder_select="me_cmp"
2153 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2154 rv10_encoder_select="h263_encoder"
2155 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2156 rv20_encoder_select="h263_encoder"
2157 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2158 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2159 shorten_decoder_select="golomb"
2160 sipr_decoder_select="lsp"
2161 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2162 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2163 sonic_decoder_select="golomb rangecoder"
2164 sonic_encoder_select="golomb rangecoder"
2165 sonic_ls_encoder_select="golomb rangecoder"
2166 sp5x_decoder_select="mjpeg_decoder"
2167 svq1_decoder_select="hpeldsp"
2168 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2169 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2170 svq3_decoder_suggest="zlib"
2171 tak_decoder_select="audiodsp"
2172 theora_decoder_select="vp3_decoder"
2173 thp_decoder_select="mjpeg_decoder"
2174 tiff_decoder_suggest="zlib"
2175 tiff_encoder_suggest="zlib"
2176 truehd_decoder_select="mlp_parser"
2177 truemotion2_decoder_select="bswapdsp"
2178 truespeech_decoder_select="bswapdsp"
2179 tscc_decoder_select="zlib"
2180 twinvq_decoder_select="mdct lsp sinewin"
2181 utvideo_decoder_select="bswapdsp"
2182 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2183 vble_decoder_select="huffyuvdsp"
2184 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2185 vc1image_decoder_select="vc1_decoder"
2186 vorbis_decoder_select="mdct"
2187 vorbis_encoder_select="mdct"
2188 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2189 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2190 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2191 vp6a_decoder_select="vp6_decoder"
2192 vp6f_decoder_select="vp6_decoder"
2193 vp7_decoder_select="h264pred videodsp"
2194 vp8_decoder_select="h264pred videodsp"
2195 vp9_decoder_select="videodsp vp9_parser"
2196 webp_decoder_select="vp8_decoder"
2197 wmalossless_decoder_select="llauddsp"
2198 wmapro_decoder_select="mdct sinewin"
2199 wmav1_decoder_select="mdct sinewin"
2200 wmav1_encoder_select="mdct sinewin"
2201 wmav2_decoder_select="mdct sinewin"
2202 wmav2_encoder_select="mdct sinewin"
2203 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2204 wmv1_decoder_select="h263_decoder"
2205 wmv1_encoder_select="h263_encoder"
2206 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2207 wmv2_encoder_select="h263_encoder"
2208 wmv3_decoder_select="vc1_decoder"
2209 wmv3image_decoder_select="wmv3_decoder"
2210 zerocodec_decoder_select="zlib"
2211 zlib_decoder_select="zlib"
2212 zlib_encoder_select="zlib"
2213 zmbv_decoder_select="zlib"
2214 zmbv_encoder_select="zlib"
2215
2216 # hardware accelerators
2217 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2218 dxva2_deps="dxva2api_h"
2219 vaapi_deps="va_va_h"
2220 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2221 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2222 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2223 xvmc_deps="X11_extensions_XvMClib_h"
2224
2225 h263_vaapi_hwaccel_deps="vaapi"
2226 h263_vaapi_hwaccel_select="h263_decoder"
2227 h263_vdpau_hwaccel_deps="vdpau"
2228 h263_vdpau_hwaccel_select="h263_decoder"
2229 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2230 h264_dxva2_hwaccel_deps="dxva2"
2231 h264_dxva2_hwaccel_select="h264_decoder"
2232 h264_vaapi_hwaccel_deps="vaapi"
2233 h264_vaapi_hwaccel_select="h264_decoder"
2234 h264_vda_decoder_deps="vda"
2235 h264_vda_decoder_select="h264_decoder"
2236 h264_vda_hwaccel_deps="vda"
2237 h264_vda_hwaccel_select="h264_decoder"
2238 h264_vda_old_hwaccel_deps="vda"
2239 h264_vda_old_hwaccel_select="h264_decoder"
2240 h264_vdpau_decoder_deps="vdpau"
2241 h264_vdpau_decoder_select="h264_decoder"
2242 h264_vdpau_hwaccel_deps="vdpau"
2243 h264_vdpau_hwaccel_select="h264_decoder"
2244 mpeg_vdpau_decoder_deps="vdpau"
2245 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2246 mpeg_xvmc_hwaccel_deps="xvmc"
2247 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2248 mpeg1_vdpau_decoder_deps="vdpau"
2249 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2250 mpeg1_vdpau_hwaccel_deps="vdpau"
2251 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2252 mpeg1_xvmc_hwaccel_deps="xvmc"
2253 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2254 mpeg2_crystalhd_decoder_select="crystalhd"
2255 mpeg2_dxva2_hwaccel_deps="dxva2"
2256 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2257 mpeg2_vaapi_hwaccel_deps="vaapi"
2258 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2259 mpeg2_vdpau_hwaccel_deps="vdpau"
2260 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2261 mpeg2_xvmc_hwaccel_deps="xvmc"
2262 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2263 mpeg4_crystalhd_decoder_select="crystalhd"
2264 mpeg4_vaapi_hwaccel_deps="vaapi"
2265 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2266 mpeg4_vdpau_decoder_deps="vdpau"
2267 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2268 mpeg4_vdpau_hwaccel_deps="vdpau"
2269 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2270 msmpeg4_crystalhd_decoder_select="crystalhd"
2271 vc1_crystalhd_decoder_select="crystalhd"
2272 vc1_dxva2_hwaccel_deps="dxva2"
2273 vc1_dxva2_hwaccel_select="vc1_decoder"
2274 vc1_vaapi_hwaccel_deps="vaapi"
2275 vc1_vaapi_hwaccel_select="vc1_decoder"
2276 vc1_vdpau_decoder_deps="vdpau"
2277 vc1_vdpau_decoder_select="vc1_decoder"
2278 vc1_vdpau_hwaccel_deps="vdpau"
2279 vc1_vdpau_hwaccel_select="vc1_decoder"
2280 wmv3_crystalhd_decoder_select="crystalhd"
2281 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2282 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2283 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2284 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2285
2286 # parsers
2287 h264_parser_select="h264_decoder"
2288 hevc_parser_select="hevc_decoder"
2289 mpegvideo_parser_select="mpegvideo"
2290 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2291 vc1_parser_select="mpegvideo vc1_decoder"
2292
2293 # external libraries
2294 libaacplus_encoder_deps="libaacplus"
2295 libcelt_decoder_deps="libcelt"
2296 libfaac_encoder_deps="libfaac"
2297 libfaac_encoder_select="audio_frame_queue"
2298 libfdk_aac_decoder_deps="libfdk_aac"
2299 libfdk_aac_encoder_deps="libfdk_aac"
2300 libfdk_aac_encoder_select="audio_frame_queue"
2301 libgme_demuxer_deps="libgme"
2302 libgsm_decoder_deps="libgsm"
2303 libgsm_encoder_deps="libgsm"
2304 libgsm_ms_decoder_deps="libgsm"
2305 libgsm_ms_encoder_deps="libgsm"
2306 libilbc_decoder_deps="libilbc"
2307 libilbc_encoder_deps="libilbc"
2308 libmodplug_demuxer_deps="libmodplug"
2309 libmp3lame_encoder_deps="libmp3lame"
2310 libmp3lame_encoder_select="audio_frame_queue"
2311 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2312 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2313 libopencore_amrnb_encoder_select="audio_frame_queue"
2314 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2315 libopenjpeg_decoder_deps="libopenjpeg"
2316 libopenjpeg_encoder_deps="libopenjpeg"
2317 libopus_decoder_deps="libopus"
2318 libopus_encoder_deps="libopus"
2319 libopus_encoder_select="audio_frame_queue"
2320 libquvi_demuxer_deps="libquvi"
2321 libschroedinger_decoder_deps="libschroedinger"
2322 libschroedinger_encoder_deps="libschroedinger"
2323 libshine_encoder_deps="libshine"
2324 libshine_encoder_select="audio_frame_queue"
2325 libspeex_decoder_deps="libspeex"
2326 libspeex_encoder_deps="libspeex"
2327 libspeex_encoder_select="audio_frame_queue"
2328 libstagefright_h264_decoder_deps="libstagefright_h264"
2329 libtheora_encoder_deps="libtheora"
2330 libtwolame_encoder_deps="libtwolame"
2331 libvo_aacenc_encoder_deps="libvo_aacenc"
2332 libvo_aacenc_encoder_select="audio_frame_queue"
2333 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2334 libvorbis_decoder_deps="libvorbis"
2335 libvorbis_encoder_deps="libvorbis"
2336 libvorbis_encoder_select="audio_frame_queue"
2337 libvpx_vp8_decoder_deps="libvpx"
2338 libvpx_vp8_encoder_deps="libvpx"
2339 libvpx_vp9_decoder_deps="libvpx"
2340 libvpx_vp9_encoder_deps="libvpx"
2341 libwavpack_encoder_deps="libwavpack"
2342 libwebp_encoder_deps="libwebp"
2343 libx264_encoder_deps="libx264"
2344 libx264rgb_encoder_deps="libx264"
2345 libx265_encoder_deps="libx265"
2346 libxavs_encoder_deps="libxavs"
2347 libxvid_encoder_deps="libxvid"
2348 libutvideo_decoder_deps="libutvideo"
2349 libutvideo_encoder_deps="libutvideo"
2350 libzvbi_teletext_decoder_deps="libzvbi"
2351
2352 # demuxers / muxers
2353 ac3_demuxer_select="ac3_parser"
2354 asf_demuxer_select="riffdec"
2355 asf_muxer_select="riffenc"
2356 asf_stream_muxer_select="asf_muxer"
2357 avi_demuxer_select="riffdec exif"
2358 avi_muxer_select="riffenc"
2359 avisynth_demuxer_deps="avisynth"
2360 avisynth_demuxer_select="riffdec"
2361 caf_demuxer_select="riffdec"
2362 dirac_demuxer_select="dirac_parser"
2363 dts_demuxer_select="dca_parser"
2364 dtshd_demuxer_select="dca_parser"
2365 dv_demuxer_select="dvprofile"
2366 dv_muxer_select="dvprofile"
2367 dxa_demuxer_select="riffdec"
2368 eac3_demuxer_select="ac3_parser"
2369 f4v_muxer_select="mov_muxer"
2370 flac_demuxer_select="flac_parser"
2371 hds_muxer_select="flv_muxer"
2372 hls_muxer_select="mpegts_muxer"
2373 image2_alias_pix_demuxer_select="image2_demuxer"
2374 image2_brender_pix_demuxer_select="image2_demuxer"
2375 ipod_muxer_select="mov_muxer"
2376 ismv_muxer_select="mov_muxer"
2377 libnut_demuxer_deps="libnut"
2378 libnut_muxer_deps="libnut"
2379 matroska_audio_muxer_select="matroska_muxer"
2380 matroska_demuxer_select="riffdec"
2381 matroska_demuxer_suggest="bzlib lzo zlib"
2382 matroska_muxer_select="riffenc"
2383 mmf_muxer_select="riffenc"
2384 mov_demuxer_select="riffdec"
2385 mov_demuxer_suggest="zlib"
2386 mov_muxer_select="riffenc rtpenc_chain"
2387 mp3_demuxer_select="mpegaudio_parser"
2388 mp4_muxer_select="mov_muxer"
2389 mpegts_muxer_select="adts_muxer latm_muxer"
2390 mpegtsraw_demuxer_select="mpegts_demuxer"
2391 mxf_d10_muxer_select="mxf_muxer"
2392 nut_muxer_select="riffenc"
2393 nuv_demuxer_select="riffdec"
2394 ogg_demuxer_select="golomb"
2395 psp_muxer_select="mov_muxer"
2396 rtp_demuxer_select="sdp_demuxer"
2397 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2398 rtsp_demuxer_select="http_protocol rtpdec"
2399 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2400 sap_demuxer_select="sdp_demuxer"
2401 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2402 sdp_demuxer_select="rtpdec"
2403 smoothstreaming_muxer_select="ismv_muxer"
2404 spdif_muxer_select="aac_parser"
2405 tak_demuxer_select="tak_parser"
2406 tg2_muxer_select="mov_muxer"
2407 tgp_muxer_select="mov_muxer"
2408 vobsub_demuxer_select="mpegps_demuxer"
2409 w64_demuxer_select="wav_demuxer"
2410 w64_muxer_select="wav_muxer"
2411 wav_demuxer_select="riffdec"
2412 wav_muxer_select="riffenc"
2413 webm_muxer_select="riffenc"
2414 wtv_demuxer_select="riffdec"
2415 wtv_muxer_select="riffenc"
2416 xmv_demuxer_select="riffdec"
2417 xwma_demuxer_select="riffdec"
2418
2419 # indevs / outdevs
2420 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2421 alsa_outdev_deps="alsa_asoundlib_h"
2422 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2423 avfoundation_indev_select="avfoundation"
2424 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2425 caca_outdev_deps="libcaca"
2426 decklink_outdev_deps="decklink pthreads"
2427 decklink_outdev_extralibs="-lstdc++"
2428 dshow_indev_deps="IBaseFilter"
2429 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2430 dv1394_indev_deps="dv1394"
2431 dv1394_indev_select="dv_demuxer"
2432 fbdev_indev_deps="linux_fb_h"
2433 fbdev_outdev_deps="linux_fb_h"
2434 gdigrab_indev_deps="CreateDIBSection"
2435 gdigrab_indev_extralibs="-lgdi32"
2436 gdigrab_indev_select="bmp_decoder"
2437 iec61883_indev_deps="libiec61883"
2438 jack_indev_deps="jack_jack_h sem_timedwait"
2439 lavfi_indev_deps="avfilter"
2440 libcdio_indev_deps="libcdio"
2441 libdc1394_indev_deps="libdc1394"
2442 libv4l2_indev_deps="libv4l2"
2443 openal_indev_deps="openal"
2444 opengl_outdev_deps="opengl"
2445 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2446 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2447 pulse_indev_deps="libpulse"
2448 pulse_outdev_deps="libpulse"
2449 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2450 qtkit_indev_select="qtkit"
2451 sdl_outdev_deps="sdl"
2452 sndio_indev_deps="sndio_h"
2453 sndio_outdev_deps="sndio_h"
2454 v4l_indev_deps="linux_videodev_h"
2455 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2456 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2457 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2458 vfwcap_indev_extralibs="-lavicap32"
2459 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2460 xv_outdev_extralibs="-lXv -lX11 -lXext"
2461 x11grab_indev_deps="x11grab"
2462
2463 # protocols
2464 bluray_protocol_deps="libbluray"
2465 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2466 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2467 ffrtmpcrypt_protocol_select="tcp_protocol"
2468 ffrtmphttp_protocol_deps="!librtmp_protocol"
2469 ffrtmphttp_protocol_select="http_protocol"
2470 ftp_protocol_select="tcp_protocol"
2471 gopher_protocol_select="network"
2472 http_protocol_select="tcp_protocol"
2473 httpproxy_protocol_select="tcp_protocol"
2474 https_protocol_select="tls_protocol"
2475 librtmp_protocol_deps="librtmp"
2476 librtmpe_protocol_deps="librtmp"
2477 librtmps_protocol_deps="librtmp"
2478 librtmpt_protocol_deps="librtmp"
2479 librtmpte_protocol_deps="librtmp"
2480 libsmbclient_protocol_deps="libsmbclient gplv3"
2481 libssh_protocol_deps="libssh"
2482 mmsh_protocol_select="http_protocol"
2483 mmst_protocol_select="network"
2484 rtmp_protocol_deps="!librtmp_protocol"
2485 rtmp_protocol_select="tcp_protocol"
2486 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2487 rtmps_protocol_deps="!librtmp_protocol"
2488 rtmps_protocol_select="tls_protocol"
2489 rtmpt_protocol_select="ffrtmphttp_protocol"
2490 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2491 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2492 rtp_protocol_select="udp_protocol"
2493 sctp_protocol_deps="struct_sctp_event_subscribe"
2494 sctp_protocol_select="network"
2495 srtp_protocol_select="rtp_protocol"
2496 tcp_protocol_select="network"
2497 tls_protocol_deps_any="openssl gnutls"
2498 tls_protocol_select="tcp_protocol"
2499 udp_protocol_select="network"
2500 unix_protocol_deps="sys_un_h"
2501 unix_protocol_select="network"
2502
2503 # filters
2504 aconvert_filter_deps="swresample"
2505 amovie_filter_deps="avcodec avformat"
2506 aresample_filter_deps="swresample"
2507 ass_filter_deps="libass"
2508 asyncts_filter_deps="avresample"
2509 atempo_filter_deps="avcodec"
2510 atempo_filter_select="rdft"
2511 azmq_filter_deps="libzmq"
2512 blackframe_filter_deps="gpl"
2513 boxblur_filter_deps="gpl"
2514 bs2b_filter_deps="libbs2b"
2515 colormatrix_filter_deps="gpl"
2516 cropdetect_filter_deps="gpl"
2517 dctdnoiz_filter_deps="avcodec"
2518 dctdnoiz_filter_select="dct"
2519 delogo_filter_deps="gpl"
2520 deshake_filter_deps="avcodec"
2521 deshake_filter_select="me_cmp"
2522 drawtext_filter_deps="libfreetype"
2523 ebur128_filter_deps="gpl"
2524 flite_filter_deps="libflite"
2525 frei0r_filter_deps="frei0r dlopen"
2526 frei0r_filter_extralibs='$ldl'
2527 frei0r_src_filter_deps="frei0r dlopen"
2528 frei0r_src_filter_extralibs='$ldl'
2529 geq_filter_deps="gpl"
2530 histeq_filter_deps="gpl"
2531 hqdn3d_filter_deps="gpl"
2532 interlace_filter_deps="gpl"
2533 kerndeint_filter_deps="gpl"
2534 ladspa_filter_deps="ladspa dlopen"
2535 ladspa_filter_extralibs='$ldl'
2536 mcdeint_filter_deps="avcodec gpl"
2537 movie_filter_deps="avcodec avformat"
2538 mp_filter_deps="gpl avcodec swscale inline_asm"
2539 mpdecimate_filter_deps="gpl avcodec"
2540 mpdecimate_filter_select="me_cmp pixblockdsp"
2541 mptestsrc_filter_deps="gpl"
2542 negate_filter_deps="lut_filter"
2543 perspective_filter_deps="gpl"
2544 ocv_filter_deps="libopencv"
2545 owdenoise_filter_deps="gpl"
2546 pan_filter_deps="swresample"
2547 phase_filter_deps="gpl"
2548 pp_filter_deps="gpl postproc"
2549 pullup_filter_deps="gpl"
2550 removelogo_filter_deps="avcodec avformat swscale"
2551 resample_filter_deps="avresample"
2552 sab_filter_deps="gpl swscale"
2553 scale_filter_deps="swscale"
2554 smartblur_filter_deps="gpl swscale"
2555 showspectrum_filter_deps="avcodec"
2556 showspectrum_filter_select="rdft"
2557 spp_filter_deps="gpl avcodec"
2558 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2559 stereo3d_filter_deps="gpl"
2560 subtitles_filter_deps="avformat avcodec libass"
2561 super2xsai_filter_deps="gpl"
2562 tinterlace_filter_deps="gpl"
2563 vidstabdetect_filter_deps="libvidstab"
2564 vidstabtransform_filter_deps="libvidstab"
2565 pixfmts_super2xsai_test_deps="super2xsai_filter"
2566 tinterlace_merge_test_deps="tinterlace_filter"
2567 tinterlace_pad_test_deps="tinterlace_filter"
2568 zmq_filter_deps="libzmq"
2569 zoompan_filter_deps="swscale"
2570
2571 # examples
2572 avio_reading="avformat avcodec avutil"
2573 avcodec_example_deps="avcodec avutil"
2574 demuxing_decoding_example_deps="avcodec avformat avutil"
2575 filter_audio_example_deps="avfilter avutil"
2576 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2577 filtering_video_example_deps="avfilter avcodec avformat avutil"
2578 metadata_example_deps="avformat avutil"
2579 muxing_example_deps="avcodec avformat avutil swscale"
2580 remuxing_example_deps="avcodec avformat avutil"
2581 resampling_audio_example_deps="avutil swresample"
2582 scaling_video_example_deps="avutil swscale"
2583 transcode_aac_example_deps="avcodec avformat swresample"
2584 transcoding_example_deps="avfilter avcodec avformat avutil"
2585
2586 # libraries, in linking order
2587 avcodec_deps="avutil"
2588 avdevice_deps="avformat avcodec avutil"
2589 avfilter_deps="avutil"
2590 avformat_deps="avcodec avutil"
2591 avresample_deps="avutil"
2592 postproc_deps="avutil gpl"
2593 swresample_deps="avutil"
2594 swscale_deps="avutil"
2595
2596 # programs
2597 ffmpeg_deps="avcodec avfilter avformat swresample"
2598 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2599                null_filter
2600                setpts_filter trim_filter"
2601 ffplay_deps="avcodec avformat swscale swresample sdl"
2602 ffplay_libs='$sdl_libs'
2603 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2604 ffprobe_deps="avcodec avformat"
2605 ffserver_deps="avformat fork sarestart"
2606 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2607
2608 # documentation
2609 podpages_deps="perl"
2610 manpages_deps="perl pod2man"
2611 htmlpages_deps="perl texi2html"
2612 txtpages_deps="perl makeinfo"
2613 doc_deps_any="manpages htmlpages podpages txtpages"
2614
2615 # default parameters
2616
2617 logfile="config.log"
2618
2619 # installation paths
2620 prefix_default="/usr/local"
2621 bindir_default='${prefix}/bin'
2622 datadir_default='${prefix}/share/ffmpeg'
2623 docdir_default='${prefix}/share/doc/ffmpeg'
2624 incdir_default='${prefix}/include'
2625 libdir_default='${prefix}/lib'
2626 mandir_default='${prefix}/share/man'
2627 shlibdir_default="$libdir_default"
2628
2629 # toolchain
2630 ar_default="ar"
2631 cc_default="gcc"
2632 cxx_default="g++"
2633 host_cc_default="gcc"
2634 cp_f="cp -f"
2635 doxygen_default="doxygen"
2636 install="install"
2637 ln_s="ln -s -f"
2638 nm_default="nm -g"
2639 objformat="elf"
2640 pkg_config_default=pkg-config
2641 ranlib_default="ranlib"
2642 strip_default="strip"
2643 yasmexe_default="yasm"
2644 windres_default="windres"
2645
2646 nogas=":"
2647
2648 # OS
2649 target_os_default=$(tolower $(uname -s))
2650 host_os=$target_os_default
2651
2652 # machine
2653 if test "$target_os_default" = aix; then
2654     arch_default=$(uname -p)
2655     strip_default="strip -X32_64"
2656 else
2657     arch_default=$(uname -m)
2658 fi
2659 cpu="generic"
2660
2661 # configurable options
2662 enable $PROGRAM_LIST
2663 enable $DOCUMENT_LIST
2664 enable $EXAMPLE_LIST
2665 enable $(filter_out avresample $LIBRARY_LIST)
2666 enable stripping
2667
2668 enable asm
2669 enable debug
2670 enable doc
2671 enable optimizations
2672 enable runtime_cpudetect
2673 enable safe_bitstream_reader
2674 enable static
2675 enable swscale_alpha
2676
2677 sws_max_filter_size_default=256
2678 set_default sws_max_filter_size
2679
2680 # Enable hwaccels by default.
2681 enable dxva2 vaapi vda vdpau xvmc
2682 enable xlib
2683
2684 # build settings
2685 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2686 LIBPREF="lib"
2687 LIBSUF=".a"
2688 FULLNAME='$(NAME)$(BUILDSUF)'
2689 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2690 SLIBPREF="lib"
2691 SLIBSUF=".so"
2692 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2693 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2694 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2695 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2696 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2697 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2698
2699 asflags_filter=echo
2700 cflags_filter=echo
2701 ldflags_filter=echo
2702
2703 AS_C='-c'
2704 AS_O='-o $@'
2705 CC_C='-c'
2706 CC_E='-E -o $@'
2707 CC_O='-o $@'
2708 CXX_C='-c'
2709 CXX_O='-o $@'
2710 LD_O='-o $@'
2711 LD_LIB='-l%'
2712 LD_PATH='-L'
2713 HOSTCC_C='-c'
2714 HOSTCC_E='-E -o $@'
2715 HOSTCC_O='-o $@'
2716 HOSTLD_O='-o $@'
2717
2718 host_libs='-lm'
2719 host_cflags_filter=echo
2720 host_ldflags_filter=echo
2721
2722 target_path='$(CURDIR)'
2723
2724 # since the object filename is not given with the -MM flag, the compiler
2725 # is only able to print the basename, and we must add the path ourselves
2726 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2727 DEPFLAGS='-MM'
2728
2729 # find source path
2730 if test -f configure; then
2731     source_path=.
2732 else
2733     source_path=$(cd $(dirname "$0"); pwd)
2734     echo "$source_path" | grep -q '[[:blank:]]' &&
2735         die "Out of tree builds are impossible with whitespace in source path."
2736     test -e "$source_path/config.h" &&
2737         die "Out of tree builds are impossible with config.h in source dir."
2738 fi
2739
2740 for v in "$@"; do
2741     r=${v#*=}
2742     l=${v%"$r"}
2743     r=$(sh_quote "$r")
2744     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2745 done
2746
2747 find_things(){
2748     thing=$1
2749     pattern=$2
2750     file=$source_path/$3
2751     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2752 }
2753
2754 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2755 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2756 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2757 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2758 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2759 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2760 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2761 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2762 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2763 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2764 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2765
2766 ALL_COMPONENTS="
2767     $BSF_LIST
2768     $DECODER_LIST
2769     $DEMUXER_LIST
2770     $ENCODER_LIST
2771     $FILTER_LIST
2772     $HWACCEL_LIST
2773     $INDEV_LIST
2774     $MUXER_LIST
2775     $OUTDEV_LIST
2776     $PARSER_LIST
2777     $PROTOCOL_LIST
2778 "
2779
2780 for n in $COMPONENT_LIST; do
2781     v=$(toupper ${n%s})_LIST
2782     eval enable \$$v
2783     eval ${n}_if_any="\$$v"
2784 done
2785
2786 enable $ARCH_EXT_LIST
2787
2788 die_unknown(){
2789     echo "Unknown option \"$1\"."
2790     echo "See $0 --help for available options."
2791     exit 1
2792 }
2793
2794 print_3_columns() {
2795     cat | tr ' ' '\n' | sort | pr -r -3 -t
2796 }
2797
2798 show_list() {
2799     suffix=_$1
2800     shift
2801     echo $* | sed s/$suffix//g | print_3_columns
2802     exit 0
2803 }
2804
2805 rand_list(){
2806     IFS=', '
2807     set -- $*
2808     unset IFS
2809     for thing; do
2810         comp=${thing%:*}
2811         prob=${thing#$comp}
2812         prob=${prob#:}
2813         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2814         echo "prob ${prob:-0.5}"
2815         printf '%s\n' $comp
2816     done
2817 }
2818
2819 do_random(){
2820     action=$1
2821     shift
2822     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2823     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2824 }
2825
2826 for opt do
2827     optval="${opt#*=}"
2828     case "$opt" in
2829         --extra-ldflags=*)
2830             add_ldflags $optval
2831         ;;
2832         --extra-libs=*)
2833             add_extralibs $optval
2834         ;;
2835         --disable-devices)
2836             disable $INDEV_LIST $OUTDEV_LIST
2837         ;;
2838         --enable-debug=*)
2839             debuglevel="$optval"
2840         ;;
2841         --disable-programs)
2842             disable $PROGRAM_LIST
2843         ;;
2844         --disable-everything)
2845             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2846         ;;
2847         --disable-all)
2848             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2849             disable $LIBRARY_LIST $PROGRAM_LIST doc
2850         ;;
2851         --enable-random|--disable-random)
2852             action=${opt%%-random}
2853             do_random ${action#--} $COMPONENT_LIST
2854         ;;
2855         --enable-random=*|--disable-random=*)
2856             action=${opt%%-random=*}
2857             do_random ${action#--} $optval
2858         ;;
2859         --enable-*=*|--disable-*=*)
2860             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2861             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2862             eval list=\$$(toupper $thing)_LIST
2863             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2864             list=$(filter "$name" $list)
2865             [ "$list" = "" ] && warn "Option $opt did not match anything"
2866             $action $list
2867         ;;
2868         --enable-?*|--disable-?*)
2869             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2870             if is_in $option $COMPONENT_LIST; then
2871                 test $action = disable && action=unset
2872                 eval $action \$$(toupper ${option%s})_LIST
2873             elif is_in $option $CMDLINE_SELECT; then
2874                 $action $option
2875             else
2876                 die_unknown $opt
2877             fi
2878         ;;
2879         --list-*)
2880             NAME="${opt#--list-}"
2881             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2882             NAME=${NAME%s}
2883             eval show_list $NAME \$$(toupper $NAME)_LIST
2884         ;;
2885         --help|-h) show_help
2886         ;;
2887         --fatal-warnings) enable fatal_warnings
2888         ;;
2889         *)
2890             optname="${opt%%=*}"
2891             optname="${optname#--}"
2892             optname=$(echo "$optname" | sed 's/-/_/g')
2893             if is_in $optname $CMDLINE_SET; then
2894                 eval $optname='$optval'
2895             elif is_in $optname $CMDLINE_APPEND; then
2896                 append $optname "$optval"
2897             else
2898                 die_unknown $opt
2899             fi
2900         ;;
2901     esac
2902 done
2903
2904 disabled logging && logfile=/dev/null
2905
2906 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2907 set >> $logfile
2908
2909 test -n "$cross_prefix" && enable cross_compile
2910
2911 if enabled cross_compile; then
2912     test -n "$arch" && test -n "$target_os" ||
2913         die "Must specify target arch and OS when cross-compiling"
2914 fi
2915
2916 ar_default="${cross_prefix}${ar_default}"
2917 cc_default="${cross_prefix}${cc_default}"
2918 cxx_default="${cross_prefix}${cxx_default}"
2919 nm_default="${cross_prefix}${nm_default}"
2920 pkg_config_default="${cross_prefix}${pkg_config_default}"
2921 ranlib_default="${cross_prefix}${ranlib_default}"
2922 strip_default="${cross_prefix}${strip_default}"
2923 windres_default="${cross_prefix}${windres_default}"
2924
2925 sysinclude_default="${sysroot}/usr/include"
2926
2927 test -n "$valgrind" && toolchain="valgrind-memcheck"
2928
2929 case "$toolchain" in
2930     clang-asan)
2931         cc_default="clang"
2932         add_cflags  -fsanitize=address
2933         add_ldflags -fsanitize=address
2934     ;;
2935     clang-tsan)
2936         cc_default="clang"
2937         add_cflags  -fsanitize=thread -pie
2938         add_ldflags -fsanitize=thread -pie
2939     ;;
2940     clang-usan)
2941         cc_default="clang"
2942         add_cflags  -fsanitize=undefined
2943         add_ldflags -fsanitize=undefined
2944     ;;
2945     gcc-asan)
2946         cc_default="gcc"
2947         add_cflags  -fsanitize=address
2948         add_ldflags -fsanitize=address
2949     ;;
2950     gcc-tsan)
2951         cc_default="gcc"
2952         add_cflags  -fsanitize=thread -pie -fPIC
2953         add_ldflags -fsanitize=thread -pie -fPIC
2954     ;;
2955     gcc-usan)
2956         cc_default="gcc"
2957         add_cflags  -fsanitize=undefined
2958         add_ldflags -fsanitize=undefined
2959     ;;
2960     valgrind-massif)
2961         target_exec_default=${valgrind:-"valgrind"}
2962         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"
2963     ;;
2964     valgrind-memcheck)
2965         target_exec_default=${valgrind:-"valgrind"}
2966         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2967     ;;
2968     msvc)
2969         # Check whether the current MSVC version needs the C99 converter.
2970         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2971         # support enough of C99 to build ffmpeg. Default to the new
2972         # behaviour if the regexp was unable to match anything, since this
2973         # successfully parses the version number of existing supported
2974         # versions that require the converter (MSVC 2010 and 2012).
2975         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2976         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2977             cc_default="cl"
2978         else
2979             cc_default="c99wrap cl"
2980         fi
2981         ld_default="link"
2982         nm_default="dumpbin -symbols"
2983         ar_default="lib"
2984         target_os_default="win32"
2985         # Use a relative path for TMPDIR. This makes sure all the
2986         # ffconf temp files are written with a relative path, avoiding
2987         # issues with msys/win32 path conversion for MSVC parameters
2988         # such as -Fo<file> or -out:<file>.
2989         TMPDIR=.
2990     ;;
2991     icl)
2992         cc_default="icl"
2993         ld_default="xilink"
2994         nm_default="dumpbin -symbols"
2995         ar_default="xilib"
2996         target_os_default="win32"
2997         TMPDIR=.
2998     ;;
2999     gcov)
3000         add_cflags  -fprofile-arcs -ftest-coverage
3001         add_ldflags -fprofile-arcs -ftest-coverage
3002     ;;
3003     hardened)
3004         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3005         add_ldflags -Wl,-z,relro -Wl,-z,now
3006     ;;
3007     ?*)
3008         die "Unknown toolchain $toolchain"
3009     ;;
3010 esac
3011
3012 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3013     target_exec target_os yasmexe
3014 enabled cross_compile || host_cc_default=$cc
3015 set_default host_cc
3016
3017 if ! $pkg_config --version >/dev/null 2>&1; then
3018     warn "$pkg_config not found, library detection may fail."
3019     pkg_config=false
3020 fi
3021
3022 if test $doxygen != $doxygen_default && \
3023   ! $doxygen --version >/dev/null 2>&1; then
3024     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3025 fi
3026
3027 exesuf() {
3028     case $1 in
3029         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3030     esac
3031 }
3032
3033 EXESUF=$(exesuf $target_os)
3034 HOSTEXESUF=$(exesuf $host_os)
3035
3036 # set temporary file name
3037 : ${TMPDIR:=$TEMPDIR}
3038 : ${TMPDIR:=$TMP}
3039 : ${TMPDIR:=/tmp}
3040
3041 if [ -n "$tempprefix" ] ; then
3042     mktemp(){
3043         echo $tempprefix.${HOSTNAME}.${UID}
3044     }
3045 elif ! check_cmd mktemp -u XXXXXX; then
3046     # simple replacement for missing mktemp
3047     # NOT SAFE FOR GENERAL USE
3048     mktemp(){
3049         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3050     }
3051 fi
3052
3053 tmpfile(){
3054     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3055         (set -C; exec > $tmp) 2>/dev/null ||
3056         die "Unable to create temporary file in $TMPDIR."
3057     append TMPFILES $tmp
3058     eval $1=$tmp
3059 }
3060
3061 trap 'rm -f -- $TMPFILES' EXIT
3062
3063 tmpfile TMPASM .asm
3064 tmpfile TMPC   .c
3065 tmpfile TMPCPP .cpp
3066 tmpfile TMPE   $EXESUF
3067 tmpfile TMPH   .h
3068 tmpfile TMPM   .m
3069 tmpfile TMPO   .o
3070 tmpfile TMPS   .S
3071 tmpfile TMPSH  .sh
3072 tmpfile TMPV   .ver
3073
3074 unset -f mktemp
3075
3076 chmod +x $TMPE
3077
3078 # make sure we can execute files in $TMPDIR
3079 cat > $TMPSH 2>> $logfile <<EOF
3080 #! /bin/sh
3081 EOF
3082 chmod +x $TMPSH >> $logfile 2>&1
3083 if ! $TMPSH >> $logfile 2>&1; then
3084     cat <<EOF
3085 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3086 variable to another directory and make sure that it is not mounted noexec.
3087 EOF
3088     die "Sanity test failed."
3089 fi
3090
3091 ccc_flags(){
3092     for flag; do
3093         case $flag in
3094             -std=c99)           echo -c99                       ;;
3095             -mcpu=*)            echo -arch ${flag#*=}           ;;
3096             -mieee)             echo -ieee                      ;;
3097             -O*|-fast)          echo $flag                      ;;
3098             -fno-math-errno)    echo -assume nomath_errno       ;;
3099             -g)                 echo -g3                        ;;
3100             -Wall)              echo -msg_enable level2         ;;
3101             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3102             -Wl,*)              echo $flag                      ;;
3103             -f*|-W*)                                            ;;
3104             *)                  echo $flag                      ;;
3105         esac
3106    done
3107 }
3108
3109 cparser_flags(){
3110     for flag; do
3111         case $flag in
3112             -Wno-switch)             echo -Wno-switch-enum ;;
3113             -Wno-format-zero-length) ;;
3114             -Wdisabled-optimization) ;;
3115             -Wno-pointer-sign)       echo -Wno-other ;;
3116             *)                       echo $flag ;;
3117         esac
3118     done
3119 }
3120
3121 msvc_common_flags(){
3122     for flag; do
3123         case $flag in
3124             # In addition to specifying certain flags under the compiler
3125             # specific filters, they must be specified here as well or else the
3126             # generic catch all at the bottom will print the original flag.
3127             -Wall)                ;;
3128             -std=c99)             ;;
3129             # Common flags
3130             -fomit-frame-pointer) ;;
3131             -g)                   echo -Z7 ;;
3132             -fno-math-errno)      ;;
3133             -fno-common)          ;;
3134             -fno-signed-zeros)    ;;
3135             -fPIC)                ;;
3136             -mthumb)              ;;
3137             -march=*)             ;;
3138             -lz)                  echo zlib.lib ;;
3139             -lavifil32)           echo vfw32.lib ;;
3140             -lavicap32)           echo vfw32.lib user32.lib ;;
3141             -l*)                  echo ${flag#-l}.lib ;;
3142             *)                    echo $flag ;;
3143         esac
3144     done
3145 }
3146
3147 msvc_flags(){
3148     msvc_common_flags "$@"
3149     for flag; do
3150         case $flag in
3151             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3152                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3153                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3154                                        -wd4554 \
3155                                        -wd4273 ;;
3156         esac
3157     done
3158 }
3159
3160 icl_flags(){
3161     msvc_common_flags "$@"
3162     for flag; do
3163         case $flag in
3164             # Despite what Intel's documentation says -Wall, which is supported
3165             # on Windows, does enable remarks so disable them here.
3166             -Wall)                echo $flag -Qdiag-disable:remark ;;
3167             -std=c99)             echo -Qstd=c99 ;;
3168             -flto)                echo -ipo ;;
3169         esac
3170     done
3171 }
3172
3173 icc_flags(){
3174     for flag; do
3175         case $flag in
3176             -flto)                echo -ipo ;;
3177             *)                    echo $flag ;;
3178         esac
3179     done
3180 }
3181
3182 pgi_flags(){
3183     for flag; do
3184         case $flag in
3185             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3186             -fomit-frame-pointer) echo -Mnoframe ;;
3187             -g)                   echo -gopt ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 suncc_flags(){
3194     for flag; do
3195         case $flag in
3196             -march=*|-mcpu=*)
3197                 case "${flag#*=}" in
3198                     native)                   echo -xtarget=native       ;;
3199                     v9|niagara)               echo -xarch=sparc          ;;
3200                     ultrasparc)               echo -xarch=sparcvis       ;;
3201                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3202                     i586|pentium)             echo -xchip=pentium        ;;
3203                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3204                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3205                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3206                     pentium4*)          echo -xtarget=pentium4           ;;
3207                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3208                     *-sse3)             echo -xarch=sse3                 ;;
3209                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3210                     bonnell)                   echo -xarch=ssse3         ;;
3211                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3212                     westmere)                  echo -xtarget=westmere    ;;
3213                     silvermont)                echo -xarch=sse4_2        ;;
3214                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3215                     core-avx*|ivybridge|haswell|broadwell)
3216                                                echo -xarch=avx           ;;
3217                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3218                     btver1)                    echo -xarch=amdsse4a      ;;
3219                     btver2|bdver*)             echo -xarch=avx           ;;
3220                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3221                     k8|opteron|athlon64|athlon-fx)
3222                                                echo -xarch=sse2a         ;;
3223                     athlon*)                   echo -xarch=pentium_proa  ;;
3224                 esac
3225                 ;;
3226             -std=c99)             echo -xc99              ;;
3227             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3228             -fPIC)                echo -KPIC -xcode=pic32 ;;
3229             -W*,*)                echo $flag              ;;
3230             -f*-*|-W*|-mimpure-text)                      ;;
3231             -shared)              echo -G                 ;;
3232             *)                    echo $flag              ;;
3233         esac
3234     done
3235 }
3236
3237 tms470_flags(){
3238     for flag; do
3239         case $flag in
3240             -march=*|-mcpu=*)
3241                 case "${flag#*=}" in
3242                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3243                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3244                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3245                     armv6*|arm11*)          echo -mv=6   ;;
3246                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3247                                             echo -mv=5e  ;;
3248                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3249                 esac
3250                 ;;
3251             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3252             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3253             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3254             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3255             -msoft-float)   echo --float_support=vfplib       ;;
3256             -O[0-3]|-mf=*)  echo $flag                        ;;
3257             -g)             echo -g -mn                       ;;
3258             -pds=*)         echo $flag                        ;;
3259             -D*|-I*)        echo $flag                        ;;
3260             --gcc|--abi=*)  echo $flag                        ;;
3261             -me)            echo $flag                        ;;
3262         esac
3263     done
3264 }
3265
3266 probe_cc(){
3267     pfx=$1
3268     _cc=$2
3269
3270     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3271     unset _ld_o _ldflags _ld_lib _ld_path
3272     unset _depflags _DEPCMD _DEPFLAGS
3273     _flags_filter=echo
3274
3275     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3276         true # no-op to avoid reading stdin in following checks
3277     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3278         _type=llvm_gcc
3279         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3280         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3285         _type=gcc
3286         gcc_version=$($_cc --version | head -n1)
3287         gcc_basever=$($_cc -dumpversion)
3288         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3289         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3290         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3291         if ! $_cc -dumpversion | grep -q '^2\.'; then
3292             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3293         fi
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3297         _type=icc
3298         _ident=$($_cc --version | head -n1)
3299         _depflags='-MMD'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302         _cflags_noopt='-O1'
3303         _flags_filter=icc_flags
3304     elif $_cc -v 2>&1 | grep -q xlc; then
3305         _type=xlc
3306         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3307         _cflags_speed='-O5'
3308         _cflags_size='-O5 -qcompact'
3309     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3310         _type=ccc
3311         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3312         _DEPFLAGS='-M'
3313         _cflags_speed='-fast'
3314         _cflags_size='-O1'
3315         _flags_filter=ccc_flags
3316     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3317         test -d "$sysroot" || die "No valid sysroot specified."
3318         _type=armcc
3319         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3320         armcc_conf="$PWD/armcc.conf"
3321         $_cc --arm_linux_configure                 \
3322              --arm_linux_config_file="$armcc_conf" \
3323              --configure_sysroot="$sysroot"        \
3324              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3325              die "Error creating armcc configuration file."
3326         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3327         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3328         as_default="${cross_prefix}gcc"
3329         _depflags='-MMD'
3330         _cflags_speed='-O3'
3331         _cflags_size='-Os'
3332     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3333         _type=tms470
3334         _ident=$($_cc -version | head -n1 | tr -s ' ')
3335         _flags='--gcc --abi=eabi -me'
3336         _cc_e='-ppl -fe=$@'
3337         _cc_o='-fe=$@'
3338         _depflags='-ppa -ppd=$(@:.o=.d)'
3339         _cflags_speed='-O3 -mf=5'
3340         _cflags_size='-O3 -mf=2'
3341         _flags_filter=tms470_flags
3342     elif $_cc -v 2>&1 | grep -q clang; then
3343         _type=clang
3344         _ident=$($_cc --version | head -n1)
3345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3346         _cflags_speed='-O3'
3347         _cflags_size='-Os'
3348     elif $_cc -V 2>&1 | grep -q Sun; then
3349         _type=suncc
3350         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3351         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3352         _DEPFLAGS='-xM1 -xc99'
3353         _ldflags='-std=c99'
3354         _cflags_speed='-O5'
3355         _cflags_size='-O5 -xspace'
3356         _flags_filter=suncc_flags
3357     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3358         _type=pathscale
3359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3361         _cflags_speed='-O2'
3362         _cflags_size='-Os'
3363         _flags_filter='filter_out -Wdisabled-optimization'
3364     elif $_cc -v 2>&1 | grep -q Open64; then
3365         _type=open64
3366         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3367         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3368         _cflags_speed='-O2'
3369         _cflags_size='-Os'
3370         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3371     elif $_cc -V 2>&1 | grep -q Portland; then
3372         _type=pgi
3373         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3374         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3375         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3376         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3377         _cflags_noopt="-O"
3378         _flags_filter=pgi_flags
3379     elif $_cc 2>&1 | grep -q Microsoft; then
3380         _type=msvc
3381         _ident=$($cc 2>&1 | head -n1)
3382         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3383         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3384         _cflags_speed="-O2"
3385         _cflags_size="-O1"
3386         if $_cc 2>&1 | grep -q Linker; then
3387             _ld_o='-out:$@'
3388         else
3389             _ld_o='-Fe$@'
3390         fi
3391         _cc_o='-Fo$@'
3392         _cc_e='-P -Fi$@'
3393         _flags_filter=msvc_flags
3394         _ld_lib='lib%.a'
3395         _ld_path='-libpath:'
3396         _flags='-nologo'
3397         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3398         if [ $pfx = hostcc ]; then
3399             append _cflags -Dsnprintf=_snprintf
3400         fi
3401         disable stripping
3402     elif $_cc 2>&1 | grep -q Intel; then
3403         _type=icl
3404         _ident=$($cc 2>&1 | head -n1)
3405         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3406         # Not only is O3 broken on 13.x+ but it is slower on all previous
3407         # versions (tested) as well.
3408         _cflags_speed="-O2"
3409         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3410         if $_cc 2>&1 | grep -q Linker; then
3411             _ld_o='-out:$@'
3412         else
3413             _ld_o='-Fe$@'
3414         fi
3415         _cc_o='-Fo$@'
3416         _cc_e='-P'
3417         _flags_filter=icl_flags
3418         _ld_lib='lib%.a'
3419         _ld_path='-libpath:'
3420         # -Qdiag-error to make icl error when seeing certain unknown arguments
3421         _flags='-nologo -Qdiag-error:4044,10157'
3422         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3423         # with MSVC which enables it by default.
3424         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3425         if [ $pfx = hostcc ]; then
3426             append _cflags -Dsnprintf=_snprintf
3427         fi
3428     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3429         _type=cparser
3430         _ident=$($_cc --version | head -n1)
3431         _depflags='-MMD'
3432         _cflags_speed='-O4'
3433         _cflags_size='-O2'
3434         _flags_filter=cparser_flags
3435     fi
3436
3437     eval ${pfx}_type=\$_type
3438     eval ${pfx}_ident=\$_ident
3439 }
3440
3441 set_ccvars(){
3442     eval ${1}_C=\${_cc_c-\${${1}_C}}
3443     eval ${1}_E=\${_cc_e-\${${1}_E}}
3444     eval ${1}_O=\${_cc_o-\${${1}_O}}
3445
3446     if [ -n "$_depflags" ]; then
3447         eval ${1}_DEPFLAGS=\$_depflags
3448     else
3449         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3450         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3451         eval DEP${1}FLAGS=\$_flags
3452     fi
3453 }
3454
3455 probe_cc cc "$cc"
3456 cflags_filter=$_flags_filter
3457 cflags_speed=$_cflags_speed
3458 cflags_size=$_cflags_size
3459 cflags_noopt=$_cflags_noopt
3460 add_cflags $_flags $_cflags
3461 cc_ldflags=$_ldflags
3462 set_ccvars CC
3463
3464 probe_cc hostcc "$host_cc"
3465 host_cflags_filter=$_flags_filter
3466 add_host_cflags  $_flags $_cflags
3467 set_ccvars HOSTCC
3468
3469 test -n "$cc_type" && enable $cc_type ||
3470     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3471
3472 : ${as_default:=$cc}
3473 : ${dep_cc_default:=$cc}
3474 : ${ld_default:=$cc}
3475 : ${host_ld_default:=$host_cc}
3476 set_default ar as dep_cc ld host_ld windres
3477
3478 probe_cc as "$as"
3479 asflags_filter=$_flags_filter
3480 add_asflags $_flags $_cflags
3481 set_ccvars AS
3482
3483 probe_cc ld "$ld"
3484 ldflags_filter=$_flags_filter
3485 add_ldflags $_flags $_ldflags
3486 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3487 LD_O=${_ld_o-$LD_O}
3488 LD_LIB=${_ld_lib-$LD_LIB}
3489 LD_PATH=${_ld_path-$LD_PATH}
3490
3491 probe_cc hostld "$host_ld"
3492 host_ldflags_filter=$_flags_filter
3493 add_host_ldflags $_flags $_ldflags
3494 HOSTLD_O=${_ld_o-$HOSTLD_O}
3495
3496 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3497     probe_cc depcc "$dep_cc"
3498     CCDEP=${_DEPCMD:-$DEPCMD}
3499     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3500     DEPCCFLAGS=$_flags
3501 fi
3502
3503 if $ar 2>&1 | grep -q Microsoft; then
3504     arflags="-nologo"
3505     ar_o='-out:$@'
3506 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3507     arflags="rq"
3508     ar_o='$@'
3509 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3510     arflags='-Xany -r -c'
3511     ar_o='$@'
3512 else
3513     arflags="rc"
3514     ar_o='$@'
3515 fi
3516
3517 add_cflags $extra_cflags
3518 add_cxxflags $extra_cxxflags
3519 add_asflags $extra_cflags
3520
3521 if test -n "$sysroot"; then
3522     case "$cc_type" in
3523         gcc|llvm_gcc|clang)
3524             add_cppflags --sysroot="$sysroot"
3525             add_ldflags --sysroot="$sysroot"
3526 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3527             add_cppflags -isysroot "$sysroot"
3528             add_ldflags -isysroot "$sysroot"
3529         ;;
3530         tms470)
3531             add_cppflags -I"$sysinclude"
3532             add_ldflags  --sysroot="$sysroot"
3533         ;;
3534     esac
3535 fi
3536
3537 if test "$cpu" = host; then
3538     enabled cross_compile &&
3539         die "--cpu=host makes no sense when cross-compiling."
3540
3541     case "$cc_type" in
3542         gcc|llvm_gcc)
3543             check_native(){
3544                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3545                 sed -n "/cc1.*$1=/{
3546                             s/.*$1=\\([^ ]*\\).*/\\1/
3547                             p
3548                             q
3549                         }" $TMPE
3550             }
3551             cpu=$(check_native -march || check_native -mcpu)
3552         ;;
3553     esac
3554
3555     test "${cpu:-host}" = host &&
3556         die "--cpu=host not supported with compiler $cc"
3557 fi
3558
3559 # Deal with common $arch aliases
3560 case "$arch" in
3561     aarch64|arm64)
3562         arch="aarch64"
3563     ;;
3564     arm*|iPad*|iPhone*)
3565         arch="arm"
3566     ;;
3567     mips*|IP*)
3568         arch="mips"
3569     ;;
3570     parisc*|hppa*)
3571         arch="parisc"
3572     ;;
3573     "Power Macintosh"|ppc*|powerpc*)
3574         arch="ppc"
3575     ;;
3576     s390|s390x)
3577         arch="s390"
3578     ;;
3579     sh4|sh)
3580         arch="sh4"
3581     ;;
3582     sun4u|sparc*)
3583         arch="sparc"
3584     ;;
3585     tilegx|tile-gx)
3586         arch="tilegx"
3587     ;;
3588     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3589         arch="x86"
3590     ;;
3591 esac
3592
3593 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3594 enable $arch
3595
3596 # Add processor-specific flags
3597 if enabled aarch64; then
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605         ;;
3606     esac
3607
3608 elif enabled alpha; then
3609
3610     cpuflags="-mcpu=$cpu"
3611
3612 elif enabled arm; then
3613
3614     check_arm_arch() {
3615         check_cpp_condition stddef.h \
3616             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3617             $cpuflags
3618     }
3619
3620     probe_arm_arch() {
3621         if   check_arm_arch 4;        then echo armv4;
3622         elif check_arm_arch 4T;       then echo armv4t;
3623         elif check_arm_arch 5;        then echo armv5;
3624         elif check_arm_arch 5E;       then echo armv5e;
3625         elif check_arm_arch 5T;       then echo armv5t;
3626         elif check_arm_arch 5TE;      then echo armv5te;
3627         elif check_arm_arch 5TEJ;     then echo armv5te;
3628         elif check_arm_arch 6;        then echo armv6;
3629         elif check_arm_arch 6J;       then echo armv6j;
3630         elif check_arm_arch 6K;       then echo armv6k;
3631         elif check_arm_arch 6Z;       then echo armv6z;
3632         elif check_arm_arch 6ZK;      then echo armv6zk;
3633         elif check_arm_arch 6T2;      then echo armv6t2;
3634         elif check_arm_arch 7;        then echo armv7;
3635         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3636         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3637         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3638         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3639         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3640         fi
3641     }
3642
3643     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3644
3645     case $cpu in
3646         armv*)
3647             cpuflags="-march=$cpu"
3648             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3649         ;;
3650         *)
3651             cpuflags="-mcpu=$cpu"
3652             case $cpu in
3653                 cortex-a*)                               subarch=armv7a  ;;
3654                 cortex-r*)                               subarch=armv7r  ;;
3655                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3656                 arm11*)                                  subarch=armv6   ;;
3657                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3658                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3659                 *)                             subarch=$(probe_arm_arch) ;;
3660             esac
3661         ;;
3662     esac
3663
3664     case "$subarch" in
3665         armv5t*)    enable fast_clz                ;;
3666         armv[6-8]*)
3667             enable fast_clz
3668             disabled fast_unaligned || enable fast_unaligned
3669             ;;
3670     esac
3671
3672 elif enabled avr32; then
3673
3674     case $cpu in
3675         ap7[02]0[0-2])
3676             subarch="avr32_ap"
3677             cpuflags="-mpart=$cpu"
3678         ;;
3679         ap)
3680             subarch="avr32_ap"
3681             cpuflags="-march=$cpu"
3682         ;;
3683         uc3[ab]*)
3684             subarch="avr32_uc"
3685             cpuflags="-mcpu=$cpu"
3686         ;;
3687         uc)
3688             subarch="avr32_uc"
3689             cpuflags="-march=$cpu"
3690         ;;
3691     esac
3692
3693 elif enabled bfin; then
3694
3695     cpuflags="-mcpu=$cpu"
3696
3697 elif enabled mips; then
3698
3699     cpuflags="-march=$cpu"
3700
3701     case $cpu in
3702         24kc)
3703             disable mipsfpu
3704             disable mipsdspr1
3705             disable mipsdspr2
3706         ;;
3707         24kf*)
3708             disable mipsdspr1
3709             disable mipsdspr2
3710         ;;
3711         24kec|34kc|1004kc)
3712             disable mipsfpu
3713             disable mipsdspr2
3714         ;;
3715         24kef*|34kf*|1004kf*)
3716             disable mipsdspr2
3717         ;;
3718         74kc)
3719             disable mipsfpu
3720         ;;
3721     esac
3722
3723 elif enabled ppc; then
3724
3725     disable ldbrx
3726     disable vsx
3727
3728     case $(tolower $cpu) in
3729         601|ppc601|powerpc601)
3730             cpuflags="-mcpu=601"
3731             disable altivec
3732         ;;
3733         603*|ppc603*|powerpc603*)
3734             cpuflags="-mcpu=603"
3735             disable altivec
3736         ;;
3737         604*|ppc604*|powerpc604*)
3738             cpuflags="-mcpu=604"
3739             disable altivec
3740         ;;
3741         g3|75*|ppc75*|powerpc75*)
3742             cpuflags="-mcpu=750"
3743             disable altivec
3744         ;;
3745         g4|745*|ppc745*|powerpc745*)
3746             cpuflags="-mcpu=7450"
3747         ;;
3748         74*|ppc74*|powerpc74*)
3749             cpuflags="-mcpu=7400"
3750         ;;
3751         g5|970|ppc970|powerpc970)
3752             cpuflags="-mcpu=970"
3753         ;;
3754         power[3-8]*)
3755             cpuflags="-mcpu=$cpu"
3756         ;;
3757         cell)
3758             cpuflags="-mcpu=cell"
3759             enable ldbrx
3760         ;;
3761         e500mc)
3762             cpuflags="-mcpu=e500mc"
3763             disable altivec
3764         ;;
3765         e500v2)
3766             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3767             disable altivec
3768             disable dcbzl
3769         ;;
3770         e500)
3771             cpuflags="-mcpu=8540 -mhard-float"
3772             disable altivec
3773             disable dcbzl
3774         ;;
3775     esac
3776
3777 elif enabled sparc; then
3778
3779     case $cpu in
3780         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3781             cpuflags="-mcpu=$cpu"
3782         ;;
3783         ultrasparc*|niagara[234])
3784             cpuflags="-mcpu=$cpu"
3785         ;;
3786     esac
3787
3788 elif enabled x86; then
3789
3790     case $cpu in
3791         i[345]86|pentium)
3792             cpuflags="-march=$cpu"
3793             disable mmx
3794         ;;
3795         # targets that do NOT support nopl and conditional mov (cmov)
3796         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3797             cpuflags="-march=$cpu"
3798             disable i686
3799         ;;
3800         # targets that do support nopl and conditional mov (cmov)
3801         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3802         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3803             cpuflags="-march=$cpu"
3804             enable i686
3805             enable fast_cmov
3806         ;;
3807         # targets that do support conditional mov but on which it's slow
3808         pentium4|pentium4m|prescott|nocona)
3809             cpuflags="-march=$cpu"
3810             enable i686
3811             disable fast_cmov
3812         ;;
3813     esac
3814
3815 fi
3816
3817 if [ "$cpu" != generic ]; then
3818     add_cflags  $cpuflags
3819     add_asflags $cpuflags
3820 fi
3821
3822 # compiler sanity check
3823 check_exec <<EOF
3824 int main(void){ return 0; }
3825 EOF
3826 if test "$?" != 0; then
3827     echo "$cc is unable to create an executable file."
3828     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3829         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3830         echo "Only do this if you know what cross compiling means."
3831     fi
3832     die "C compiler test failed."
3833 fi
3834
3835 add_cppflags -D_ISOC99_SOURCE
3836 add_cxxflags -D__STDC_CONSTANT_MACROS
3837 check_cflags -std=c99
3838 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3839 #include <stdlib.h>
3840 EOF
3841 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3842 #include <stdlib.h>
3843 EOF
3844
3845 add_host_cppflags -D_ISOC99_SOURCE
3846 check_host_cflags -std=c99
3847 check_host_cflags -Wall
3848 check_host_cflags -O3
3849
3850 check_64bit(){
3851     arch32=$1
3852     arch64=$2
3853     expr=$3
3854     check_code cc "" "int test[2*($expr) - 1]" &&
3855         subarch=$arch64 || subarch=$arch32
3856 }
3857
3858 case "$arch" in
3859     aarch64|alpha|ia64)
3860         spic=$shared
3861     ;;
3862     mips)
3863         check_64bit mips mips64 '_MIPS_SIM > 1'
3864         spic=$shared
3865     ;;
3866     parisc)
3867         check_64bit parisc parisc64 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     ppc)
3871         check_64bit ppc ppc64 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     s390)
3875         check_64bit s390 s390x 'sizeof(void *) > 4'
3876         spic=$shared
3877     ;;
3878     sparc)
3879         check_64bit sparc sparc64 'sizeof(void *) > 4'
3880         spic=$shared
3881     ;;
3882     x86)
3883         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3884         if test "$subarch" = "x86_64"; then
3885             spic=$shared
3886         fi
3887     ;;
3888     ppc)
3889         check_cc <<EOF && subarch="ppc64"
3890         int test[(int)sizeof(char*) - 7];
3891 EOF
3892     ;;
3893 esac
3894
3895 enable $subarch
3896 enabled spic && enable_weak pic
3897
3898 # OS specific
3899 case $target_os in
3900     aix)
3901         SHFLAGS=-shared
3902         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3903         enabled shared && add_ldflags -Wl,-brtl
3904         ;;
3905     android)
3906         disable symver
3907         SLIB_INSTALL_NAME='$(SLIBNAME)'
3908         SLIB_INSTALL_LINKS=
3909         # soname not set on purpose
3910         SHFLAGS=-shared
3911         ;;
3912     haiku)
3913         prefix_default="/boot/common"
3914         network_extralibs="-lnetwork"
3915         host_libs=
3916         ;;
3917     sunos)
3918         SHFLAGS='-shared -Wl,-h,$$(@F)'
3919         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3920         network_extralibs="-lsocket -lnsl"
3921         # When using suncc to build, the Solaris linker will mark
3922         # an executable with each instruction set encountered by
3923         # the Solaris assembler.  As our libraries contain their own
3924         # guards for processor-specific code, instead suppress
3925         # generation of the HWCAPS ELF section on Solaris x86 only.
3926         enabled_all suncc x86 &&
3927             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3928             add_ldflags -Wl,-M,mapfile
3929         nm_default='nm -P -g'
3930         ;;
3931     netbsd)
3932         disable symver
3933         oss_indev_extralibs="-lossaudio"
3934         oss_outdev_extralibs="-lossaudio"
3935         enabled gcc || check_ldflags -Wl,-zmuldefs
3936         ;;
3937     openbsd|bitrig)
3938         disable symver
3939         SHFLAGS='-shared'
3940         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3941         SLIB_INSTALL_LINKS=
3942         oss_indev_extralibs="-lossaudio"
3943         oss_outdev_extralibs="-lossaudio"
3944         ;;
3945     dragonfly)
3946         disable symver
3947         ;;
3948     freebsd)
3949         ;;
3950     bsd/os)
3951         add_extralibs -lpoll -lgnugetopt
3952         strip="strip -d"
3953         ;;
3954     darwin)
3955         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3956         enabled ppc && add_asflags -force_cpusubtype_ALL
3957         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3958         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3959         strip="${strip} -x"
3960         add_ldflags -Wl,-dynamic,-search_paths_first
3961         SLIBSUF=".dylib"
3962         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3963         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3964         objformat="macho"
3965         enabled x86_64 && objformat="macho64"
3966         enabled_any pic shared ||
3967             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3968         ;;
3969     mingw32*)
3970         if test $target_os = "mingw32ce"; then
3971             disable network
3972         else
3973             target_os=mingw32
3974         fi
3975         LIBTARGET=i386
3976         if enabled x86_64; then
3977             LIBTARGET="i386:x86-64"
3978         elif enabled arm; then
3979             LIBTARGET=arm-wince
3980         fi
3981         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3982         check_ldflags -Wl,--nxcompat
3983         check_ldflags -Wl,--dynamicbase
3984         shlibdir_default="$bindir_default"
3985         SLIBPREF=""
3986         SLIBSUF=".dll"
3987         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3988         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3989         dlltool="${cross_prefix}dlltool"
3990         if check_cmd lib.exe -list; then
3991             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3992             if enabled x86_64; then
3993                 LIBTARGET=x64
3994             fi
3995         elif check_cmd $dlltool --version; then
3996             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3997         fi
3998         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3999         SLIB_INSTALL_LINKS=
4000         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4001         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4002         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4003         objformat="win32"
4004         ranlib=:
4005         enable dos_paths
4006         ;;
4007     win32|win64)
4008         disable symver
4009         if enabled shared; then
4010             # Link to the import library instead of the normal static library
4011             # for shared libs.
4012             LD_LIB='%.lib'
4013             # Cannot build both shared and static libs with MSVC or icl.
4014             disable static
4015         fi
4016         shlibdir_default="$bindir_default"
4017         SLIBPREF=""
4018         SLIBSUF=".dll"
4019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4021         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4022         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4023         SLIB_INSTALL_LINKS=
4024         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4025         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4026         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4027         objformat="win32"
4028         ranlib=:
4029         enable dos_paths
4030         ;;
4031     cygwin*)
4032         target_os=cygwin
4033         shlibdir_default="$bindir_default"
4034         SLIBPREF="cyg"
4035         SLIBSUF=".dll"
4036         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4037         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4038         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4039         SLIB_INSTALL_LINKS=
4040         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4041         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4042         objformat="win32"
4043         enable dos_paths
4044         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4045         ;;
4046     *-dos|freedos|opendos)
4047         network_extralibs="-lsocket"
4048         objformat="coff"
4049         enable dos_paths
4050         add_cppflags -U__STRICT_ANSI__
4051         ;;
4052     linux)
4053         enable dv1394
4054         ;;
4055     irix*)
4056         target_os=irix
4057         ranlib="echo ignoring ranlib"
4058         ;;
4059     os/2*)
4060         strip="lxlite -CS"
4061         ln_s="cp -f"
4062         objformat="aout"
4063         add_cppflags -D_GNU_SOURCE
4064         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4065         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4066         LIBSUF="_s.a"
4067         SLIBPREF=""
4068         SLIBSUF=".dll"
4069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4071         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4072             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4073             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4074             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4075             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4076             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4077         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4078             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4079         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4080         enable dos_paths
4081         enable_weak os2threads
4082         ;;
4083     gnu/kfreebsd)
4084         add_cppflags -D_BSD_SOURCE
4085         ;;
4086     gnu)
4087         ;;
4088     qnx)
4089         add_cppflags -D_QNX_SOURCE
4090         network_extralibs="-lsocket"
4091         ;;
4092     symbian)
4093         SLIBSUF=".dll"
4094         enable dos_paths
4095         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4096         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4097         add_ldflags -Wl,--target1-abs,--no-undefined \
4098                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4099                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4100         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4101                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4102                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4103         ;;
4104     osf1)
4105         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4106         ;;
4107     minix)
4108         ;;
4109     plan9)
4110         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4111                      -D_REENTRANT_SOURCE        \
4112                      -D_RESEARCH_SOURCE         \
4113                      -DFD_SETSIZE=96            \
4114                      -DHAVE_SOCK_OPTS
4115         add_compat strtod.o strtod=avpriv_strtod
4116         network_extralibs='-lbsd'
4117         exeobjs=compat/plan9/main.o
4118         disable ffserver
4119         cp_f='cp'
4120         ;;
4121     none)
4122         ;;
4123     *)
4124         die "Unknown OS '$target_os'."
4125         ;;
4126 esac
4127
4128 # determine libc flavour
4129
4130 probe_libc(){
4131     pfx=$1
4132     pfx_no_=${pfx%_}
4133     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4134     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4135         eval ${pfx}libc_type=uclibc
4136         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4137     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4138         eval ${pfx}libc_type=glibc
4139         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4140     # MinGW headers can be installed on Cygwin, so check for newlib first.
4141     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4142         eval ${pfx}libc_type=newlib
4143         add_${pfx}cppflags -U__STRICT_ANSI__
4144     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4145     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4146         eval ${pfx}libc_type=mingw64
4147         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4148             add_compat msvcrt/snprintf.o
4149             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4150         fi
4151         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4152         eval test \$${pfx_no_}cc_type = "gcc" &&
4153             add_${pfx}cppflags -D__printf__=__gnu_printf__
4154     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4155          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4156         eval ${pfx}libc_type=mingw32
4157         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4158             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4159             die "ERROR: MinGW32 runtime version must be >= 3.15."
4160         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4161         eval test \$${pfx_no_}cc_type = "gcc" &&
4162             add_${pfx}cppflags -D__printf__=__gnu_printf__
4163     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4164         eval ${pfx}libc_type=msvcrt
4165         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4166         # 0x601 by default unless something else is set by the user.
4167         # This can easily lead to us detecting functions only present
4168         # in such new versions and producing binaries requiring windows 7.0.
4169         # Therefore explicitly set the default to XP unless the user has
4170         # set something else on the command line.
4171         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4172             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4173     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4174         eval ${pfx}libc_type=klibc
4175     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4176         eval ${pfx}libc_type=bionic
4177     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4178         eval ${pfx}libc_type=solaris
4179         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4180     fi
4181 }
4182
4183 probe_libc
4184 test -n "$libc_type" && enable libc_$libc_type
4185 probe_libc host_
4186 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4187
4188 case $libc_type in
4189     bionic)
4190         add_compat strtod.o strtod=avpriv_strtod
4191         ;;
4192     msvcrt)
4193         add_compat strtod.o strtod=avpriv_strtod
4194         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4195                                      _snprintf=avpriv_snprintf  \
4196                                      vsnprintf=avpriv_vsnprintf
4197         ;;
4198 esac
4199
4200 # hacks for compiler/libc/os combinations
4201
4202 if enabled_all tms470 libc_glibc; then
4203     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4204     add_cppflags -D__USER_LABEL_PREFIX__=
4205     add_cppflags -D__builtin_memset=memset
4206     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4207     add_cflags   -pds=48    # incompatible redefinition of macro
4208 fi
4209
4210 if enabled_all ccc libc_glibc; then
4211     add_ldflags -Wl,-z,now  # calls to libots crash without this
4212 fi
4213
4214 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4215     add_cppflags '-I\$(SRC_PATH)/compat/float'
4216
4217 esc(){
4218     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4219 }
4220
4221 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4222
4223 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4224
4225 set_default $PATHS_LIST
4226 set_default nm
4227
4228 # we need to build at least one lib type
4229 if ! enabled_any static shared; then
4230     cat <<EOF
4231 At least one library type must be built.
4232 Specify --enable-static to build the static libraries or --enable-shared to
4233 build the shared libraries as well. To only build the shared libraries specify
4234 --disable-static in addition to --enable-shared.
4235 EOF
4236     exit 1;
4237 fi
4238
4239 die_license_disabled() {
4240     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4241 }
4242
4243 die_license_disabled_gpl() {
4244     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4245 }
4246
4247 die_license_disabled gpl frei0r
4248 die_license_disabled gpl libcdio
4249 die_license_disabled gpl libsmbclient
4250 die_license_disabled gpl libutvideo
4251 die_license_disabled gpl libvidstab
4252 die_license_disabled gpl libx264
4253 die_license_disabled gpl libx265
4254 die_license_disabled gpl libxavs
4255 die_license_disabled gpl libxvid
4256 die_license_disabled gpl libzvbi
4257 die_license_disabled gpl x11grab
4258
4259 die_license_disabled nonfree libaacplus
4260 die_license_disabled nonfree libfaac
4261 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4262 enabled gpl && die_license_disabled_gpl nonfree openssl
4263
4264 die_license_disabled version3 libopencore_amrnb
4265 die_license_disabled version3 libopencore_amrwb
4266 die_license_disabled version3 libsmbclient
4267 die_license_disabled version3 libvo_aacenc
4268 die_license_disabled version3 libvo_amrwbenc
4269
4270 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4271
4272 disabled optimizations || check_cflags -fomit-frame-pointer
4273
4274 enable_weak_pic() {
4275     disabled pic && return
4276     enable pic
4277     add_cppflags -DPIC
4278     case "$target_os" in
4279     mingw*|cygwin*)
4280         ;;
4281     *)
4282         add_cflags -fPIC
4283         ;;
4284     esac
4285     add_asflags  -fPIC
4286 }
4287
4288 enabled pic && enable_weak_pic
4289
4290 check_cc <<EOF || die "Symbol mangling check failed."
4291 int ff_extern;
4292 EOF
4293 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4294 extern_prefix=${sym%%ff_extern*}
4295
4296 check_cc <<EOF && enable_weak inline_asm
4297 void foo(void) { __asm__ volatile ("" ::); }
4298 EOF
4299
4300 _restrict=
4301 for restrict_keyword in restrict __restrict__ __restrict; do
4302     check_cc <<EOF && _restrict=$restrict_keyword && break
4303 void foo(char * $restrict_keyword p);
4304 EOF
4305 done
4306
4307 check_cc <<EOF && enable pragma_deprecated
4308 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4309 EOF
4310
4311 check_cc <<EOF && enable attribute_packed
4312 struct { int x; } __attribute__((packed)) x;
4313 EOF
4314
4315 check_cc <<EOF && enable attribute_may_alias
4316 union { int x; } __attribute__((may_alias)) x;
4317 EOF
4318
4319 check_cc <<EOF || die "endian test failed"
4320 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4321 EOF
4322 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4323
4324 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4325     if ! enabled bigendian ;then
4326         enable vsx
4327     fi
4328 fi
4329
4330
4331 if enabled asm; then
4332     enabled     arm         && nogas=die
4333     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4334     as=${gas:=$as}
4335     check_as <<EOF && enable gnu_as || \
4336         $nogas "GNU assembler not found, install gas-preprocessor"
4337 .macro m n
4338 \n: .int 0
4339 .endm
4340 m x
4341 EOF
4342
4343     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4344 .altmacro
4345 EOF
4346
4347     check_as <<EOF && enable as_func
4348 .func test
4349 .endfunc
4350 EOF
4351 fi
4352
4353 check_inline_asm inline_asm_labels '"1:\n"'
4354
4355 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4356
4357 if enabled aarch64; then
4358     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4359     # internal assembler in clang 3.3 does not support this instruction
4360     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4361     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4362
4363     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4364
4365 elif enabled alpha; then
4366
4367     check_cflags -mieee
4368
4369 elif enabled arm; then
4370
4371     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4372 float func(float a, float b){ return a+b; }
4373 EOF
4374
4375     enabled thumb && check_cflags -mthumb || check_cflags -marm
4376
4377     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4378         enable vfp_args
4379     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4380         case "${cross_prefix:-$cc}" in
4381             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4382             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4383 __asm__ (".eabi_attribute 28, 1");
4384 int main(void) { return 0; }
4385 EOF
4386         esac
4387         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4388     fi
4389
4390     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4391     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4392     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4393     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4394     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4395     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4396
4397     [ $target_os = linux ] || [ $target_os = android ] ||
4398         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4399             $ARCH_EXT_LIST_ARM
4400
4401     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4402
4403     check_as <<EOF && enable as_dn_directive
4404 ra .dn d0.i16
4405 .unreq ra
4406 EOF
4407
4408     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4409
4410 elif enabled mips; then
4411
4412     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4413     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4414      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4415     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4416      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4417     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4418      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4419     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4420      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4421
4422 elif enabled parisc; then
4423
4424     if enabled gcc; then
4425         case $($cc -dumpversion) in
4426             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4427         esac
4428     fi
4429
4430 elif enabled ppc; then
4431
4432     enable local_aligned_8 local_aligned_16 local_aligned_32
4433
4434     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4435     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4436     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4437     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4438
4439     # AltiVec flags: The FSF version of GCC differs from the Apple version
4440     if enabled altivec; then
4441         check_cflags -maltivec -mabi=altivec &&
4442         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4443         check_cflags -faltivec
4444
4445         # check if our compiler supports Motorola AltiVec C API
4446         check_cc <<EOF || disable altivec
4447 $inc_altivec_h
4448 int main(void) {
4449     vector signed int v1 = (vector signed int) { 0 };
4450     vector signed int v2 = (vector signed int) { 1 };
4451     v1 = vec_add(v1, v2);
4452     return 0;
4453 }
4454 EOF
4455
4456         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4457     fi
4458
4459     if enabled vsx; then
4460         check_cflags -mvsx
4461     fi
4462 elif enabled x86; then
4463
4464     check_builtin rdtsc    intrin.h   "__rdtsc()"
4465     check_builtin mm_empty mmintrin.h "_mm_empty()"
4466
4467     enable local_aligned_8 local_aligned_16 local_aligned_32
4468
4469     # check whether EBP is available on x86
4470     # As 'i' is stored on the stack, this program will crash
4471     # if the base pointer is used to access it because the
4472     # base pointer is cleared in the inline assembly code.
4473     check_exec_crash <<EOF && enable ebp_available
4474 volatile int i=0;
4475 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4476 return i;
4477 EOF
4478
4479     # check whether EBX is available on x86
4480     check_inline_asm ebx_available '""::"b"(0)' &&
4481         check_inline_asm ebx_available '"":::"%ebx"'
4482
4483     # check whether xmm clobbers are supported
4484     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4485
4486     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4487         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4488
4489     # check whether binutils is new enough to compile SSSE3/MMXEXT
4490     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4491     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4492
4493     if ! disabled_any asm mmx yasm; then
4494         if check_cmd $yasmexe --version; then
4495             enabled x86_64 && yasm_extra="-m amd64"
4496             yasm_debug="-g dwarf2"
4497         elif check_cmd nasm -v; then
4498             yasmexe=nasm
4499             yasm_debug="-g -F dwarf"
4500             if enabled x86_64; then
4501                 case "$objformat" in
4502                     elf)   objformat=elf64 ;;
4503                     win32) objformat=win64 ;;
4504                 esac
4505             fi
4506         fi
4507
4508         YASMFLAGS="-f $objformat $yasm_extra"
4509         enabled pic               && append YASMFLAGS "-DPIC"
4510         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4511         case "$objformat" in
4512             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4513         esac
4514
4515         check_yasm "movbe ecx, [5]" && enable yasm ||
4516             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4517         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4518         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4519         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4520         check_yasm "CPU amdnop" || disable cpunop
4521     fi
4522
4523     case "$cpu" in
4524         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4525             disable fast_clz
4526         ;;
4527     esac
4528
4529 fi
4530
4531 check_ldflags -Wl,--as-needed
4532
4533 if check_func dlopen; then
4534     ldl=
4535 elif check_func dlopen -ldl; then
4536     ldl=-ldl
4537 fi
4538
4539 if ! disabled network; then
4540     check_func getaddrinfo $network_extralibs
4541     check_func getservbyport $network_extralibs
4542     check_func inet_aton $network_extralibs
4543
4544     check_type netdb.h "struct addrinfo"
4545     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4546     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4547     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4548     check_type poll.h "struct pollfd"
4549     check_type netinet/sctp.h "struct sctp_event_subscribe"
4550     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4551     check_type netinet/in.h "struct sockaddr_in6"
4552     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4553     check_type "sys/types.h sys/socket.h" socklen_t
4554
4555     # Prefer arpa/inet.h over winsock2
4556     if check_header arpa/inet.h ; then
4557         check_func closesocket
4558     elif check_header winsock2.h ; then
4559         check_func_headers winsock2.h closesocket -lws2 &&
4560             network_extralibs="-lws2" ||
4561         { check_func_headers winsock2.h closesocket -lws2_32 &&
4562             network_extralibs="-lws2_32"; } || disable winsock2_h network
4563         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4564
4565         check_type ws2tcpip.h socklen_t
4566         check_type ws2tcpip.h "struct addrinfo"
4567         check_type ws2tcpip.h "struct group_source_req"
4568         check_type ws2tcpip.h "struct ip_mreq_source"
4569         check_type ws2tcpip.h "struct ipv6_mreq"
4570         check_type winsock2.h "struct pollfd"
4571         check_struct winsock2.h "struct sockaddr" sa_len
4572         check_type ws2tcpip.h "struct sockaddr_in6"
4573         check_type ws2tcpip.h "struct sockaddr_storage"
4574     else
4575         disable network
4576     fi
4577 fi
4578
4579 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4580 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4581 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4582 check_builtin sarestart signal.h "SA_RESTART"
4583 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4584
4585 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4586 check_func  ${malloc_prefix}memalign            && enable memalign
4587 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4588
4589 check_func  access
4590 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4591 check_func  fcntl
4592 check_func  fork
4593 check_func  gethrtime
4594 check_func  getopt
4595 check_func  getrusage
4596 check_func  gettimeofday
4597 check_func  isatty
4598 check_func  localtime_r
4599 check_func  mach_absolute_time
4600 check_func  mkstemp
4601 check_func  mmap
4602 check_func  mprotect
4603 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4604 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4605 check_func  sched_getaffinity
4606 check_func  setrlimit
4607 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4608 check_func  strerror_r
4609 check_func  sysconf
4610 check_func  sysctl
4611 check_func  usleep
4612
4613 check_func_headers conio.h kbhit
4614 check_func_headers io.h setmode
4615 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4616 check_func_headers stdlib.h getenv
4617
4618 check_func_headers windows.h CoTaskMemFree -lole32
4619 check_func_headers windows.h GetProcessAffinityMask
4620 check_func_headers windows.h GetProcessTimes
4621 check_func_headers windows.h GetSystemTimeAsFileTime
4622 check_func_headers windows.h MapViewOfFile
4623 check_func_headers windows.h PeekNamedPipe
4624 check_func_headers windows.h SetConsoleTextAttribute
4625 check_func_headers windows.h Sleep
4626 check_func_headers windows.h VirtualAlloc
4627 check_func_headers glob.h glob
4628 enabled xlib &&
4629     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4630
4631 check_header cl/cl.h
4632 check_header direct.h
4633 check_header dlfcn.h
4634 check_header dxva.h
4635 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4636 check_header io.h
4637 check_header libcrystalhd/libcrystalhd_if.h
4638 check_header mach/mach_time.h
4639 check_header malloc.h
4640 check_header poll.h
4641 check_header sys/mman.h
4642 check_header sys/param.h
4643 check_header sys/resource.h
4644 check_header sys/select.h
4645 check_header sys/time.h
4646 check_header sys/un.h
4647 check_header termios.h
4648 check_header unistd.h
4649 check_header vdpau/vdpau.h
4650 check_header vdpau/vdpau_x11.h
4651 check_header VideoDecodeAcceleration/VDADecoder.h
4652 check_header windows.h
4653 check_header X11/extensions/XvMClib.h
4654 check_header asm/types.h
4655
4656 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4657 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4658 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4659
4660 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4661
4662 if ! disabled w32threads && ! enabled pthreads; then
4663     check_func_headers "windows.h process.h" _beginthreadex &&
4664         enable w32threads || disable w32threads
4665 fi
4666
4667 # check for some common methods of building with pthread support
4668 # do this before the optional library checks as some of them require pthreads
4669 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4670     enable pthreads
4671     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4672         add_cflags -pthread
4673         add_extralibs -pthread
4674     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4675         add_cflags -pthreads
4676         add_extralibs -pthreads
4677     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4678         add_cflags -ldl -pthread
4679         add_extralibs -ldl -pthread
4680     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4681         add_extralibs -lpthreadGC2
4682     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4683         :
4684     elif ! check_func pthread_join && ! check_func pthread_create; then
4685         disable pthreads
4686     fi
4687     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4688 fi
4689
4690
4691 if enabled pthreads; then
4692   check_func pthread_cancel
4693 fi
4694
4695 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4696 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4697
4698 check_lib math.h sin -lm && LIBM="-lm"
4699 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4700
4701 atan2f_args=2
4702 ldexpf_args=2
4703 powf_args=2
4704 fminf_args=2
4705
4706 for func in $MATH_FUNCS; do
4707     eval check_mathfunc $func \${${func}_args:-1}
4708 done
4709
4710 # these are off by default, so fail if requested and not available
4711 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4712 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4713                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4714                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4715 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4716 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4717 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4718 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4719 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4720 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4721 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4722 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4723 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4724 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4725                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4726                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4727 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4728 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4729 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4730 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"
4731 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4732 enabled fontconfig        && enable libfontconfig
4733 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4734 enabled libfreetype       && require_libfreetype
4735 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4736 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4737 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4738                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4739                                done || die "ERROR: libgsm not found"; }
4740 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4741 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4742 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4743 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4744 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4745 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4746 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4747 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4748                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4749                                die "ERROR: libopenjpeg not found"; }
4750 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4751 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4752 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4753 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4754 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4755 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4756 enabled libsmbclient      && { { check_pkg_config smbclient libsmbclient.h smbc_init &&
4757                                  require_pkg_config smbclient libsmbclient.h smbc_init; } ||
4758                                  require smbclient libsmbclient.h smbc_init -lsmbclient; }
4759 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4760 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4761 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4762 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4763     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4764     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4765 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4766 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4767                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4768                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4769 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4770 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4771 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4772 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4773 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4774 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4775 enabled libvpx            && {
4776     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4777                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4778     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 ||
4779                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4780     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4781     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4782 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4783 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4784 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4785                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4786                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4787 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4788                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4789                                die "ERROR: libx265 version must be >= 17."; }
4790 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4791 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4792 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4793 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4794 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4795                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4796                                die "ERROR: openal not found"; } &&
4797                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4798                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4799 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4800                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4801                                die "ERROR: opencl not found"; } &&
4802                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4803                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4804                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4805 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4806                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4807                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4808                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4809                                die "ERROR: opengl not found."
4810                              }
4811 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4812                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4813                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4814                                die "ERROR: openssl not found"; }
4815 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4816
4817 if enabled gnutls; then
4818     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4819     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4820 fi
4821
4822 # libdc1394 check
4823 if enabled libdc1394; then
4824     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4825         enable libdc1394_2; } ||
4826     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4827         enable libdc1394_1; } ||
4828     die "ERROR: No version of libdc1394 found "
4829 fi
4830
4831 SDL_CONFIG="${cross_prefix}sdl-config"
4832 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4833     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4834     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4835     enable sdl
4836 else
4837   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4838     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4839     sdl_libs=$("${SDL_CONFIG}" --libs)
4840     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4841     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4842     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4843     enable sdl
4844   fi
4845 fi
4846 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4847
4848 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4849 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4850 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4851 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4852 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4853
4854 check_header linux/fb.h
4855 check_header linux/videodev.h
4856 check_header linux/videodev2.h
4857 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4858
4859 check_header sys/videoio.h
4860
4861 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4862 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4863 # w32api 3.12 had it defined wrong
4864 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4865
4866 check_type "dshow.h" IBaseFilter
4867
4868 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4869 { check_header dev/bktr/ioctl_meteor.h &&
4870   check_header dev/bktr/ioctl_bt848.h; } ||
4871 { check_header machine/ioctl_meteor.h &&
4872   check_header machine/ioctl_bt848.h; } ||
4873 { check_header dev/video/meteor/ioctl_meteor.h &&
4874   check_header dev/video/bktr/ioctl_bt848.h; } ||
4875 check_header dev/ic/bt8xx.h
4876
4877 check_header sndio.h
4878 if check_struct sys/soundcard.h audio_buf_info bytes; then
4879     enable_safe sys/soundcard.h
4880 else
4881     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4882     #include <sys/soundcard.h>
4883     audio_buf_info abc;
4884 EOF
4885 fi
4886 check_header soundcard.h
4887
4888 enabled_any alsa_indev alsa_outdev &&
4889     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4890
4891 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4892     check_func jack_port_get_latency_range -ljack
4893
4894 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4895
4896 if enabled libcdio; then
4897     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4898     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4899     die "ERROR: libcdio-paranoia not found"
4900 fi
4901
4902 enabled xlib &&
4903     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4904
4905 enabled x11grab                                           &&
4906 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4907 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4908 { enabled xlib || die "ERROR: Xlib not found"; }
4909
4910 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4911
4912 enabled dxva2api_h &&
4913     check_cc <<EOF && enable dxva2api_cobj
4914 #define _WIN32_WINNT 0x0600
4915 #define COBJMACROS
4916 #include <windows.h>
4917 #include <d3d9.h>
4918 #include <dxva2api.h>
4919 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4920 EOF
4921
4922 enabled vaapi &&
4923     check_lib va/va.h vaInitialize -lva ||
4924     disable vaapi
4925
4926 enabled vdpau &&
4927     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4928     disable vdpau
4929
4930 enabled vdpau && enabled xlib &&
4931     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4932     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4933     enable vdpau_x11
4934
4935 # Funny iconv installations are not unusual, so check it after all flags have been set
4936 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4937
4938 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4939
4940 # add some useful compiler flags if supported
4941 check_cflags -Wdeclaration-after-statement
4942 check_cflags -Wall
4943 check_cflags -Wdisabled-optimization
4944 check_cflags -Wpointer-arith
4945 check_cflags -Wredundant-decls
4946 check_cflags -Wwrite-strings
4947 check_cflags -Wtype-limits
4948 check_cflags -Wundef
4949 check_cflags -Wmissing-prototypes
4950 check_cflags -Wno-pointer-to-int-cast
4951 check_cflags -Wstrict-prototypes
4952 check_cflags -Wempty-body
4953 enabled extra_warnings && check_cflags -Winline
4954
4955 check_disable_warning(){
4956     warning_flag=-W${1#-Wno-}
4957     test_cflags $warning_flag && add_cflags $1
4958 }
4959
4960 check_disable_warning -Wno-parentheses
4961 check_disable_warning -Wno-switch
4962 check_disable_warning -Wno-format-zero-length
4963 check_disable_warning -Wno-pointer-sign
4964
4965 # add some linker flags
4966 check_ldflags -Wl,--warn-common
4967 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4968 enabled rpath && add_ldflags -Wl,-rpath,$libdir
4969 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4970
4971 # add some strip flags
4972 # -wN '..@*' is more selective than -x, but not available everywhere.
4973 check_stripflags -wN \'..@*\' || check_stripflags -x
4974
4975 enabled neon_clobber_test &&
4976     check_ldflags -Wl,--wrap,avcodec_open2              \
4977                   -Wl,--wrap,avcodec_decode_audio4      \
4978                   -Wl,--wrap,avcodec_decode_video2      \
4979                   -Wl,--wrap,avcodec_decode_subtitle2   \
4980                   -Wl,--wrap,avcodec_encode_audio2      \
4981                   -Wl,--wrap,avcodec_encode_video2      \
4982                   -Wl,--wrap,avcodec_encode_subtitle    \
4983                   -Wl,--wrap,swr_convert                \
4984                   -Wl,--wrap,avresample_convert ||
4985     disable neon_clobber_test
4986
4987 enabled xmm_clobber_test &&
4988     check_ldflags -Wl,--wrap,avcodec_open2              \
4989                   -Wl,--wrap,avcodec_decode_audio4      \
4990                   -Wl,--wrap,avcodec_decode_video2      \
4991                   -Wl,--wrap,avcodec_decode_subtitle2   \
4992                   -Wl,--wrap,avcodec_encode_audio2      \
4993                   -Wl,--wrap,avcodec_encode_video       \
4994                   -Wl,--wrap,avcodec_encode_video2      \
4995                   -Wl,--wrap,avcodec_encode_subtitle    \
4996                   -Wl,--wrap,swr_convert                \
4997                   -Wl,--wrap,avresample_convert         \
4998                   -Wl,--wrap,sws_scale ||
4999     disable xmm_clobber_test
5000
5001 echo "X{};" > $TMPV
5002 if test_ldflags -Wl,--version-script,$TMPV; then
5003     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5004     check_cc <<EOF && enable symver_asm_label
5005 void ff_foo(void) __asm__ ("av_foo@VERSION");
5006 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5007 EOF
5008     check_cc <<EOF && enable symver_gnu_asm
5009 __asm__(".symver ff_foo,av_foo@VERSION");
5010 void ff_foo(void) {}
5011 EOF
5012 fi
5013
5014 if [ -z "$optflags" ]; then
5015     if enabled small; then
5016         optflags=$cflags_size
5017     elif enabled optimizations; then
5018         optflags=$cflags_speed
5019     else
5020         optflags=$cflags_noopt
5021     fi
5022 fi
5023
5024 check_optflags(){
5025     check_cflags "$@"
5026     enabled lto && check_ldflags "$@"
5027 }
5028
5029
5030 if enabled lto; then
5031     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5032     check_cflags  -flto
5033     check_ldflags -flto $cpuflags
5034     disable inline_asm_direct_symbol_refs
5035 fi
5036
5037 check_optflags $optflags
5038 check_optflags -fno-math-errno
5039 check_optflags -fno-signed-zeros
5040
5041 enabled ftrapv && check_cflags -ftrapv
5042
5043 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5044 int x;
5045 EOF
5046
5047
5048 if enabled icc; then
5049     # Just warnings, no remarks
5050     check_cflags -w1
5051     # -wd: Disable following warnings
5052     # 144, 167, 556: -Wno-pointer-sign
5053     # 188: enumerated type mixed with another type
5054     # 1292: attribute "foo" ignored
5055     # 1419: external declaration in primary source file
5056     # 10006: ignoring unknown option -fno-signed-zeros
5057     # 10148: ignoring unknown option -Wno-parentheses
5058     # 10156: ignoring option '-W'; no argument required
5059     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5060     # 11030: Warning unknown option --as-needed
5061     # 10156: ignoring option '-export'; no argument required
5062     check_ldflags -wd10156,11030
5063     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5064     enable ebp_available
5065     # The test above does not test linking
5066     enabled lto && disable symver_asm_label
5067     if enabled x86_32; then
5068         icc_version=$($cc -dumpversion)
5069         test ${icc_version%%.*} -ge 11 &&
5070             check_cflags -falign-stack=maintain-16-byte ||
5071             disable aligned_stack
5072     fi
5073 elif enabled ccc; then
5074     # disable some annoying warnings
5075     add_cflags -msg_disable bitnotint
5076     add_cflags -msg_disable mixfuncvoid
5077     add_cflags -msg_disable nonstandcast
5078     add_cflags -msg_disable unsupieee
5079 elif enabled gcc; then
5080     check_optflags -fno-tree-vectorize
5081     check_cflags -Werror=format-security
5082     check_cflags -Werror=implicit-function-declaration
5083     check_cflags -Werror=missing-prototypes
5084     check_cflags -Werror=return-type
5085     check_cflags -Werror=vla
5086     check_cflags -Wformat
5087     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5088 elif enabled llvm_gcc; then
5089     check_cflags -mllvm -stack-alignment=16
5090 elif enabled clang; then
5091     check_cflags -mllvm -stack-alignment=16
5092     check_cflags -Qunused-arguments
5093     check_cflags -Werror=implicit-function-declaration
5094     check_cflags -Werror=missing-prototypes
5095     check_cflags -Werror=return-type
5096 elif enabled cparser; then
5097     add_cflags -Wno-missing-variable-declarations
5098     add_cflags -Wno-empty-statement
5099 elif enabled armcc; then
5100     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5101     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5102     # 2523: use of inline assembly is deprecated
5103     add_cflags -W${armcc_opt},--diag_suppress=2523
5104     add_cflags -W${armcc_opt},--diag_suppress=1207
5105     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5106     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5107     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5108     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5109 elif enabled tms470; then
5110     add_cflags -pds=824 -pds=837
5111     disable inline_asm
5112 elif enabled pathscale; then
5113     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5114 elif enabled_any msvc icl; then
5115     enabled x86_32 && disable aligned_stack
5116     enabled_all x86_32 debug && add_cflags -Oy-
5117     enabled debug && add_ldflags -debug
5118     enable pragma_deprecated
5119     if enabled icl; then
5120         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5121         # (correctly) on icl 13.x.
5122         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5123             add_cflags -Qansi-alias
5124         # Some inline asm is not compilable in debug
5125         if enabled debug; then
5126             disable ebp_available
5127             disable ebx_available
5128         fi
5129     fi
5130     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5131     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5132 fi
5133
5134 case $as_type in
5135     clang)
5136         add_asflags -Qunused-arguments
5137     ;;
5138 esac
5139
5140 case $ld_type in
5141     clang)
5142         check_ldflags -Qunused-arguments
5143     ;;
5144 esac
5145
5146 case $target_os in
5147     osf1)
5148         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5149     ;;
5150     plan9)
5151         add_cppflags -Dmain=plan9_main
5152     ;;
5153 esac
5154
5155 enable frame_thread_encoder
5156
5157 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5158
5159 check_deps $CONFIG_LIST       \
5160            $CONFIG_EXTRA      \
5161            $HAVE_LIST         \
5162            $ALL_COMPONENTS    \
5163
5164 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"
5165
5166
5167 if test $target_os = "haiku"; then
5168     disable memalign
5169     disable posix_memalign
5170 fi
5171
5172 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5173     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5174     enable dxva2_lib
5175
5176 ! enabled_any memalign posix_memalign aligned_malloc &&
5177     enabled_any $need_memalign && enable memalign_hack
5178
5179 # add_dep lib dep
5180 # -> enable ${lib}_deps_${dep}
5181 # -> add $dep to ${lib}_deps only once
5182 add_dep() {
5183     lib=$1
5184     dep=$2
5185     enabled "${lib}_deps_${dep}" && return 0
5186     enable  "${lib}_deps_${dep}"
5187     prepend "${lib}_deps" $dep
5188 }
5189
5190 # merge deps lib components
5191 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5192 merge_deps() {
5193     lib=$1
5194     shift
5195     for comp in $*; do
5196         enabled $comp || continue
5197         eval "dep=\"\$${comp}_deps\""
5198         for d in $dep; do
5199             add_dep $lib $d
5200         done
5201     done
5202 }
5203
5204 merge_deps libavfilter $FILTER_LIST
5205
5206 for thread in $THREADS_LIST; do
5207     if enabled $thread; then
5208         test -n "$thread_type" &&
5209             die "ERROR: Only one thread type must be selected." ||
5210             thread_type="$thread"
5211     fi
5212 done
5213
5214 # conditional library dependencies, in linking order
5215 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5216 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5217 enabled aresample_filter    && prepend avfilter_deps "swresample"
5218 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5219 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5220 enabled decimate_filter     && prepend avfilter_deps "avcodec"
5221 enabled deshake_filter      && prepend avfilter_deps "avcodec"
5222 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5223 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5224 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5225 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5226 enabled mp_filter           && prepend avfilter_deps "avcodec"
5227 enabled pan_filter          && prepend avfilter_deps "swresample"
5228 enabled pp_filter           && prepend avfilter_deps "postproc"
5229 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5230 enabled resample_filter && prepend avfilter_deps "avresample"
5231 enabled sab_filter          && prepend avfilter_deps "swscale"
5232 enabled scale_filter    && prepend avfilter_deps "swscale"
5233 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5234 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5235 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5236
5237 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5238
5239 enabled opus_decoder    && prepend avcodec_deps "swresample"
5240
5241 expand_deps(){
5242     lib_deps=${1}_deps
5243     eval "deps=\$$lib_deps"
5244     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5245     unique $lib_deps
5246 }
5247
5248 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5249 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5250
5251 map 'expand_deps $v' $LIBRARY_LIST
5252
5253 echo "install prefix            $prefix"
5254 echo "source path               $source_path"
5255 echo "C compiler                $cc"
5256 echo "C library                 $libc_type"
5257 if test "$host_cc" != "$cc"; then
5258     echo "host C compiler           $host_cc"
5259     echo "host C library            $host_libc_type"
5260 fi
5261 echo "ARCH                      $arch ($cpu)"
5262 if test "$build_suffix" != ""; then
5263     echo "build suffix              $build_suffix"
5264 fi
5265 if test "$progs_suffix" != ""; then
5266     echo "progs suffix              $progs_suffix"
5267 fi
5268 if test "$extra_version" != ""; then
5269     echo "version string suffix     $extra_version"
5270 fi
5271 echo "big-endian                ${bigendian-no}"
5272 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5273 if enabled x86; then
5274     echo "${yasmexe}                      ${yasm-no}"
5275     echo "MMX enabled               ${mmx-no}"
5276     echo "MMXEXT enabled            ${mmxext-no}"
5277     echo "3DNow! enabled            ${amd3dnow-no}"
5278     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5279     echo "SSE enabled               ${sse-no}"
5280     echo "SSSE3 enabled             ${ssse3-no}"
5281     echo "AVX enabled               ${avx-no}"
5282     echo "XOP enabled               ${xop-no}"
5283     echo "FMA3 enabled              ${fma3-no}"
5284     echo "FMA4 enabled              ${fma4-no}"
5285     echo "i686 features enabled     ${i686-no}"
5286     echo "CMOV is fast              ${fast_cmov-no}"
5287     echo "EBX available             ${ebx_available-no}"
5288     echo "EBP available             ${ebp_available-no}"
5289 fi
5290 if enabled aarch64; then
5291     echo "NEON enabled              ${neon-no}"
5292     echo "VFP enabled               ${vfp-no}"
5293 fi
5294 if enabled arm; then
5295     echo "ARMv5TE enabled           ${armv5te-no}"
5296     echo "ARMv6 enabled             ${armv6-no}"
5297     echo "ARMv6T2 enabled           ${armv6t2-no}"
5298     echo "VFP enabled               ${vfp-no}"
5299     echo "NEON enabled              ${neon-no}"
5300     echo "THUMB enabled             ${thumb-no}"
5301 fi
5302 if enabled mips; then
5303     echo "MIPS FPU enabled          ${mipsfpu-no}"
5304     echo "MIPS32R2 enabled          ${mips32r2-no}"
5305     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5306     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5307 fi
5308 if enabled ppc; then
5309     echo "AltiVec enabled           ${altivec-no}"
5310     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5311     echo "PPC VSX optimizations     ${vsx-no}"
5312     echo "dcbzl available           ${dcbzl-no}"
5313 fi
5314 echo "debug symbols             ${debug-no}"
5315 echo "strip symbols             ${stripping-no}"
5316 echo "optimize for size         ${small-no}"
5317 echo "optimizations             ${optimizations-no}"
5318 echo "static                    ${static-no}"
5319 echo "shared                    ${shared-no}"
5320 echo "postprocessing support    ${postproc-no}"
5321 echo "new filter support        ${avfilter-no}"
5322 echo "network support           ${network-no}"
5323 echo "threading support         ${thread_type-no}"
5324 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5325 echo "SDL support               ${sdl-no}"
5326 echo "opencl enabled            ${opencl-no}"
5327 echo "texi2html enabled         ${texi2html-no}"
5328 echo "perl enabled              ${perl-no}"
5329 echo "pod2man enabled           ${pod2man-no}"
5330 echo "makeinfo enabled          ${makeinfo-no}"
5331 test -n "$random_seed" &&
5332     echo "random seed               ${random_seed}"
5333 echo
5334
5335 echo "External libraries:"
5336 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5337 echo
5338
5339 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5340     echo "Enabled ${type}s:"
5341     eval list=\$$(toupper $type)_LIST
5342     print_enabled '_*' $list | print_3_columns
5343     echo
5344 done
5345
5346 license="LGPL version 2.1 or later"
5347 if enabled nonfree; then
5348     license="nonfree and unredistributable"
5349 elif enabled gplv3; then
5350     license="GPL version 3 or later"
5351 elif enabled lgplv3; then
5352     license="LGPL version 3 or later"
5353 elif enabled gpl; then
5354     license="GPL version 2 or later"
5355 fi
5356
5357 echo "License: $license"
5358
5359 echo "Creating config.mak, config.h, and doc/config.texi..."
5360
5361 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5362
5363 enabled stripping || strip="echo skipping strip"
5364
5365 config_files="$TMPH config.mak doc/config.texi"
5366
5367 cat > config.mak <<EOF
5368 # Automatically generated by configure - do not modify!
5369 ifndef FFMPEG_CONFIG_MAK
5370 FFMPEG_CONFIG_MAK=1
5371 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5372 prefix=$prefix
5373 LIBDIR=\$(DESTDIR)$libdir
5374 SHLIBDIR=\$(DESTDIR)$shlibdir
5375 INCDIR=\$(DESTDIR)$incdir
5376 BINDIR=\$(DESTDIR)$bindir
5377 DATADIR=\$(DESTDIR)$datadir
5378 DOCDIR=\$(DESTDIR)$docdir
5379 MANDIR=\$(DESTDIR)$mandir
5380 SRC_PATH=$source_path
5381 ifndef MAIN_MAKEFILE
5382 SRC_PATH:=\$(SRC_PATH:.%=..%)
5383 endif
5384 CC_IDENT=$cc_ident
5385 ARCH=$arch
5386 CC=$cc
5387 CXX=$cxx
5388 AS=$as
5389 LD=$ld
5390 DEPCC=$dep_cc
5391 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5392 DEPAS=$as
5393 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5394 YASM=$yasmexe
5395 DEPYASM=$yasmexe
5396 AR=$ar
5397 ARFLAGS=$arflags
5398 AR_O=$ar_o
5399 RANLIB=$ranlib
5400 STRIP=$strip
5401 CP=cp -p
5402 LN_S=$ln_s
5403 CPPFLAGS=$CPPFLAGS
5404 CFLAGS=$CFLAGS
5405 CXXFLAGS=$CXXFLAGS
5406 ASFLAGS=$ASFLAGS
5407 AS_C=$AS_C
5408 AS_O=$AS_O
5409 CC_C=$CC_C
5410 CC_E=$CC_E
5411 CC_O=$CC_O
5412 CXX_C=$CXX_C
5413 CXX_O=$CXX_O
5414 LD_O=$LD_O
5415 LD_LIB=$LD_LIB
5416 LD_PATH=$LD_PATH
5417 DLLTOOL=$dlltool
5418 WINDRES=$windres
5419 DEPWINDRES=$dep_cc
5420 DOXYGEN=$doxygen
5421 LDFLAGS=$LDFLAGS
5422 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5423 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5424 YASMFLAGS=$YASMFLAGS
5425 BUILDSUF=$build_suffix
5426 PROGSSUF=$progs_suffix
5427 FULLNAME=$FULLNAME
5428 LIBPREF=$LIBPREF
5429 LIBSUF=$LIBSUF
5430 LIBNAME=$LIBNAME
5431 SLIBPREF=$SLIBPREF
5432 SLIBSUF=$SLIBSUF
5433 EXESUF=$EXESUF
5434 EXTRA_VERSION=$extra_version
5435 CCDEP=$CCDEP
5436 CXXDEP=$CXXDEP
5437 CCDEP_FLAGS=$CCDEP_FLAGS
5438 ASDEP=$ASDEP
5439 ASDEP_FLAGS=$ASDEP_FLAGS
5440 CC_DEPFLAGS=$CC_DEPFLAGS
5441 AS_DEPFLAGS=$AS_DEPFLAGS
5442 HOSTCC=$host_cc
5443 HOSTLD=$host_ld
5444 HOSTCFLAGS=$host_cflags
5445 HOSTCPPFLAGS=$host_cppflags
5446 HOSTEXESUF=$HOSTEXESUF
5447 HOSTLDFLAGS=$host_ldflags
5448 HOSTLIBS=$host_libs
5449 DEPHOSTCC=$host_cc
5450 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5451 HOSTCCDEP=$HOSTCCDEP
5452 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5453 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5454 HOSTCC_C=$HOSTCC_C
5455 HOSTCC_O=$HOSTCC_O
5456 HOSTLD_O=$HOSTLD_O
5457 TARGET_EXEC=$target_exec $target_exec_args
5458 TARGET_PATH=$target_path
5459 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5460 CFLAGS-ffplay=$sdl_cflags
5461 ZLIB=$($ldflags_filter -lz)
5462 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5463 EXTRALIBS=$extralibs
5464 COMPAT_OBJS=$compat_objs
5465 EXEOBJS=$exeobjs
5466 INSTALL=$install
5467 LIBTARGET=${LIBTARGET}
5468 SLIBNAME=${SLIBNAME}
5469 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5470 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5471 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5472 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5473 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5474 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5475 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5476 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5477 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5478 NOREDZONE_FLAGS=$noredzone_flags
5479 EOF
5480
5481 get_version(){
5482     lcname=lib${1}
5483     name=$(toupper $lcname)
5484     file=$source_path/$lcname/version.h
5485     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5486     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5487     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5488     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5489     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5490     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5491 }
5492
5493 map 'get_version $v' $LIBRARY_LIST
5494
5495 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5496
5497 print_program_libs(){
5498     eval "program_libs=\$${1}_libs"
5499     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5500 }
5501
5502 map 'print_program_libs $v' $PROGRAM_LIST
5503
5504 cat > $TMPH <<EOF
5505 /* Automatically generated by configure - do not modify! */
5506 #ifndef FFMPEG_CONFIG_H
5507 #define FFMPEG_CONFIG_H
5508 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5509 #define FFMPEG_LICENSE "$(c_escape $license)"
5510 #define CONFIG_THIS_YEAR 2014
5511 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5512 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5513 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5514 #define av_restrict $_restrict
5515 #define EXTERN_PREFIX "${extern_prefix}"
5516 #define EXTERN_ASM ${extern_prefix}
5517 #define BUILDSUF "$build_suffix"
5518 #define SLIBSUF "$SLIBSUF"
5519 #define HAVE_MMX2 HAVE_MMXEXT
5520 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5521 EOF
5522
5523 test -n "$assert_level" &&
5524     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5525
5526 test -n "$malloc_prefix" &&
5527     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5528
5529 if enabled yasm; then
5530     append config_files $TMPASM
5531     printf '' >$TMPASM
5532 fi
5533
5534 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5535
5536
5537 mkdir -p doc
5538 echo "@c auto-generated by configure" > doc/config.texi
5539
5540 print_config ARCH_   "$config_files" $ARCH_LIST
5541 print_config HAVE_   "$config_files" $HAVE_LIST
5542 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5543                                      $CONFIG_EXTRA      \
5544                                      $ALL_COMPONENTS    \
5545
5546 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5547 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5548
5549 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5550 cp_if_changed $TMPH config.h
5551 touch .config
5552
5553 enabled yasm && cp_if_changed $TMPASM config.asm
5554
5555 cat > $TMPH <<EOF
5556 /* Generated by ffconf */
5557 #ifndef AVUTIL_AVCONFIG_H
5558 #define AVUTIL_AVCONFIG_H
5559 EOF
5560
5561 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5562
5563 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5564
5565 cp_if_changed $TMPH libavutil/avconfig.h
5566
5567 if test -n "$WARNINGS"; then
5568     printf "\n$WARNINGS"
5569     enabled fatal_warnings && exit 1
5570 fi
5571
5572 # build pkg-config files
5573
5574 lib_version(){
5575     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5576 }
5577
5578 pkgconfig_generate(){
5579     name=$1
5580     shortname=${name#lib}${build_suffix}
5581     comment=$2
5582     version=$3
5583     libs=$4
5584     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5585     requires=${requires%, }
5586     enabled ${name#lib} || return 0
5587     mkdir -p $name
5588     cat <<EOF > $name/$name${build_suffix}.pc
5589 prefix=$prefix
5590 exec_prefix=\${prefix}
5591 libdir=$libdir
5592 includedir=$incdir
5593
5594 Name: $name
5595 Description: $comment
5596 Version: $version
5597 Requires: $(enabled shared || echo $requires)
5598 Requires.private: $(enabled shared && echo $requires)
5599 Conflicts:
5600 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5601 Libs.private: $(enabled shared && echo $libs)
5602 Cflags: -I\${includedir}
5603 EOF
5604
5605 mkdir -p doc/examples/pc-uninstalled
5606 includedir=${source_path}
5607 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5608     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5609 prefix=
5610 exec_prefix=
5611 libdir=\${pcfiledir}/../../../$name
5612 includedir=${includedir}
5613
5614 Name: $name
5615 Description: $comment
5616 Version: $version
5617 Requires: $requires
5618 Conflicts:
5619 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5620 Cflags: -I\${includedir}
5621 EOF
5622 }
5623
5624 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5625 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5626 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5627 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5628 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5629 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5630 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs"
5631 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5632 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"