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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148
 149 Hardware accelerators:
 150   --disable-dxva2          disable DXVA2 code [autodetect]
 151   --disable-vaapi          disable VAAPI code [autodetect]
 152   --disable-vda            disable VDA code [autodetect]
 153   --disable-vdpau          disable VDPAU code [autodetect]
 154
 155 Individual component options:
 156   --disable-everything     disable all components listed below
 157   --disable-encoder=NAME   disable encoder NAME
 158   --enable-encoder=NAME    enable encoder NAME
 159   --disable-encoders       disable all encoders
 160   --disable-decoder=NAME   disable decoder NAME
 161   --enable-decoder=NAME    enable decoder NAME
 162   --disable-decoders       disable all decoders
 163   --disable-hwaccel=NAME   disable hwaccel NAME
 164   --enable-hwaccel=NAME    enable hwaccel NAME
 165   --disable-hwaccels       disable all hwaccels
 166   --disable-muxer=NAME     disable muxer NAME
 167   --enable-muxer=NAME      enable muxer NAME
 168   --disable-muxers         disable all muxers
 169   --disable-demuxer=NAME   disable demuxer NAME
 170   --enable-demuxer=NAME    enable demuxer NAME
 171   --disable-demuxers       disable all demuxers
 172   --enable-parser=NAME     enable parser NAME
 173   --disable-parser=NAME    disable parser NAME
 174   --disable-parsers        disable all parsers
 175   --enable-bsf=NAME        enable bitstream filter NAME
 176   --disable-bsf=NAME       disable bitstream filter NAME
 177   --disable-bsfs           disable all bitstream filters
 178   --enable-protocol=NAME   enable protocol NAME
 179   --disable-protocol=NAME  disable protocol NAME
 180   --disable-protocols      disable all protocols
 181   --enable-indev=NAME      enable input device NAME
 182   --disable-indev=NAME     disable input device NAME
 183   --disable-indevs         disable input devices
 184   --enable-outdev=NAME     enable output device NAME
 185   --disable-outdev=NAME    disable output device NAME
 186   --disable-outdevs        disable output devices
 187   --disable-devices        disable all devices
 188   --enable-filter=NAME     enable filter NAME
 189   --disable-filter=NAME    disable filter NAME
 190   --disable-filters        disable all filters
 191
 192 External library support:
 193   --enable-avisynth        enable reading of AviSynth script files [no]
 194   --disable-bzlib          disable bzlib [autodetect]
 195   --enable-fontconfig      enable fontconfig
 196   --enable-frei0r          enable frei0r video filtering
 197   --enable-gnutls          enable gnutls [no]
 198   --disable-iconv          disable iconv [autodetect]
 199   --enable-ladspa          enable LADSPA audio filtering
 200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 201   --enable-libass          enable libass subtitles rendering [no]
 202   --enable-libbluray       enable BluRay reading using libbluray [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-libgme          enable Game Music Emu via libgme [no]
 213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 216   --enable-libmodplug      enable ModPlug via libmodplug [no]
 217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 218   --enable-libnut          enable NUT (de)muxing via libnut,
 219                            native (de)muxer exists [no]
 220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 222   --enable-libopencv       enable video filtering via libopencv [no]
 223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 224   --enable-libopus         enable Opus decoding via libopus [no]
 225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 226   --enable-libquvi         enable quvi input via libquvi [no]
 227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 230   --enable-libsoxr         enable Include libsoxr resampling [no]
 231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 232   --enable-libssh          enable SFTP protocol via libssh [no]
 233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 234   --enable-libtheora       enable Theora encoding via libtheora [no]
 235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 238   --enable-libvidstab      enable video stabilization using vid.stab [no]
 239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 242                            native implementation exists [no]
 243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 245   --enable-libwebp         enable WebP encoding via libwebp [no]
 246   --enable-libx264         enable H.264 encoding via x264 [no]
 247   --enable-libx265         enable HEVC encoding via x265 [no]
 248   --enable-libxavs         enable AVS encoding via xavs [no]
 249   --enable-libxvid         enable Xvid encoding via xvidcore,
 250                            native MPEG-4/Xvid encoder exists [no]
 251   --enable-libzmq          enable message passing via libzmq [no]
 252   --enable-libzvbi         enable teletext support via libzvbi [no]
 253   --enable-decklink        enable Blackmagick DeckLink output [no]
 254   --enable-openal          enable OpenAL 1.1 capture support [no]
 255   --enable-opencl          enable OpenCL code
 256   --enable-opengl          enable OpenGL rendering [no]
 257   --enable-openssl         enable openssl [no]
 258   --enable-x11grab         enable X11 grabbing [no]
 259   --disable-xlib           disable xlib [autodetect]
 260   --disable-zlib           disable zlib [autodetect]
 261
 262 Toolchain options:
 263   --arch=ARCH              select architecture [$arch]
 264   --cpu=CPU                select the minimum required CPU (affects
 265                            instruction selection, may crash on older CPUs)
 266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 267   --progs-suffix=SUFFIX    program name suffix []
 268   --enable-cross-compile   assume a cross-compiler is used
 269   --sysroot=PATH           root of cross-build tree
 270   --sysinclude=PATH        location of cross-build system headers
 271   --target-os=OS           compiler targets OS [$target_os]
 272   --target-exec=CMD        command to run executables on target
 273   --target-path=DIR        path to view of build directory on target
 274   --target-samples=DIR     path to samples directory on target
 275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 276   --toolchain=NAME         set tool defaults according to NAME
 277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 278   --nm=NM                  use nm tool NM [$nm_default]
 279   --ar=AR                  use archive tool AR [$ar_default]
 280   --as=AS                  use assembler AS [$as_default]
 281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 283   --cc=CC                  use C compiler CC [$cc_default]
 284   --cxx=CXX                use C compiler CXX [$cxx_default]
 285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 286   --ld=LD                  use linker LD [$ld_default]
 287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
 288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 289   --host-cc=HOSTCC         use host C compiler HOSTCC
 290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 292   --host-ld=HOSTLD         use host linker HOSTLD
 293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 294   --host-libs=HLIBS        use libs HLIBS when linking for host
 295   --host-os=OS             compiler host OS [$target_os]
 296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 300   --extra-version=STRING   version string suffix []
 301   --optflags=OPTFLAGS      override optimization-related compiler flags
 302   --build-suffix=SUFFIX    library name suffix []
 303   --enable-pic             build position-independent code
 304   --enable-thumb           compile for Thumb instruction set
 305   --enable-lto             use link-time optimization
 306
 307 Advanced options (experts only):
 308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 309   --disable-symver         disable symbol versioning
 310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 311   --disable-safe-bitstream-reader
 312                            disable buffer boundary checking in bitreaders
 313                            (faster, but may crash)
 314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 315   --enable-sram            allow use of on-chip SRAM
 316
 317 Optimization options (experts only):
 318   --disable-asm            disable all assembler optimizations
 319   --disable-altivec        disable AltiVec optimizations
 320   --disable-amd3dnow       disable 3DNow! optimizations
 321   --disable-amd3dnowext    disable 3DNow! extended optimizations
 322   --disable-mmx            disable MMX optimizations
 323   --disable-mmxext         disable MMXEXT optimizations
 324   --disable-sse            disable SSE optimizations
 325   --disable-sse2           disable SSE2 optimizations
 326   --disable-sse3           disable SSE3 optimizations
 327   --disable-ssse3          disable SSSE3 optimizations
 328   --disable-sse4           disable SSE4 optimizations
 329   --disable-sse42          disable SSE4.2 optimizations
 330   --disable-avx            disable AVX optimizations
 331   --disable-xop            disable XOP optimizations
 332   --disable-fma3           disable FMA3 optimizations
 333   --disable-fma4           disable FMA4 optimizations
 334   --disable-avx2           disable AVX2 optimizations
 335   --disable-armv5te        disable armv5te optimizations
 336   --disable-armv6          disable armv6 optimizations
 337   --disable-armv6t2        disable armv6t2 optimizations
 338   --disable-vfp            disable VFP optimizations
 339   --disable-neon           disable NEON optimizations
 340   --disable-inline-asm     disable use of inline assembler
 341   --disable-yasm           disable use of yasm assembler
 342   --disable-mips32r2       disable MIPS32R2 optimizations
 343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 345   --disable-mipsfpu        disable floating point MIPS optimizations
 346   --disable-fast-unaligned consider unaligned accesses slow
 347
 348 Developer options (useful when working on FFmpeg itself):
 349   --disable-debug          disable debugging symbols
 350   --enable-debug=LEVEL     set the debug level [$debuglevel]
 351   --disable-optimizations  disable compiler optimizations
 352   --enable-extra-warnings  enable more compiler warnings
 353   --disable-stripping      disable stripping of executables and shared libraries
 354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 355                            2 causes a slowdown at runtime.
 356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 358                            leaks and errors, using the specified valgrind binary.
 359                            Cannot be combined with --target-exec
 360   --enable-ftrapv          Trap arithmetic overflows
 361   --samples=PATH           location of test samples for FATE, if not set use
 362                            \$FATE_SAMPLES at make invocation time.
 363   --enable-neon-clobber-test check NEON registers for clobbering (should be
 364                            used only for debugging purposes)
 365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 366                            should be used only for debugging purposes)
 367   --enable-random          randomly enable/disable components
 368   --disable-random
 369   --enable-random=LIST     randomly enable/disable specific components or
 370   --disable-random=LIST    component groups. LIST is a comma-separated list
 371                            of NAME[:PROB] entries where NAME is a component
 372                            (group) and PROB the probability associated with
 373                            NAME (default 0.5).
 374   --random-seed=VALUE      seed value for --enable/disable-random
 375
 376 NOTE: Object files are built at the place where configure is launched.
 377 EOF
 378   exit 0
 379 }
 380
 381 quotes='""'
 382
 383 log(){
 384     echo "$@" >> $logfile
 385 }
 386
 387 log_file(){
 388     log BEGIN $1
 389     pr -n -t $1 >> $logfile
 390     log END $1
 391 }
 392
 393 echolog(){
 394     log "$@"
 395     echo "$@"
 396 }
 397
 398 warn(){
 399     log "WARNING: $*"
 400     WARNINGS="${WARNINGS}WARNING: $*\n"
 401 }
 402
 403 die(){
 404     echolog "$@"
 405     cat <<EOF
 406
 407 If you think configure made a mistake, make sure you are using the latest
 408 version from Git.  If the latest version fails, report the problem to the
 409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 410 EOF
 411     if disabled logging; then
 412         cat <<EOF
 413 Rerun configure with logging enabled (do not use --disable-logging), and
 414 include the log this produces with your report.
 415 EOF
 416     else
 417         cat <<EOF
 418 Include the log file "$logfile" produced by configure as this will help
 419 solving the problem.
 420 EOF
 421     fi
 422     exit 1
 423 }
 424
 425 # Avoid locale weirdness, besides we really just want to translate ASCII.
 426 toupper(){
 427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 428 }
 429
 430 tolower(){
 431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 432 }
 433
 434 c_escape(){
 435     echo "$*" | sed 's/["\\]/\\\0/g'
 436 }
 437
 438 sh_quote(){
 439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 441     echo "$v"
 442 }
 443
 444 cleanws(){
 445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 446 }
 447
 448 filter(){
 449     pat=$1
 450     shift
 451     for v; do
 452         eval "case $v in $pat) echo $v ;; esac"
 453     done
 454 }
 455
 456 filter_out(){
 457     pat=$1
 458     shift
 459     for v; do
 460         eval "case $v in $pat) ;; *) echo $v ;; esac"
 461     done
 462 }
 463
 464 map(){
 465     m=$1
 466     shift
 467     for v; do eval $m; done
 468 }
 469
 470 add_suffix(){
 471     suffix=$1
 472     shift
 473     for v; do echo ${v}${suffix}; done
 474 }
 475
 476 set_all(){
 477     value=$1
 478     shift
 479     for var in $*; do
 480         eval $var=$value
 481     done
 482 }
 483
 484 set_weak(){
 485     value=$1
 486     shift
 487     for var; do
 488         eval : \${$var:=$value}
 489     done
 490 }
 491
 492 sanitize_var_name(){
 493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 494 }
 495
 496 set_safe(){
 497     var=$1
 498     shift
 499     eval $(sanitize_var_name "$var")='$*'
 500 }
 501
 502 get_safe(){
 503     eval echo \$$(sanitize_var_name "$1")
 504 }
 505
 506 pushvar(){
 507     for pvar in $*; do
 508         eval level=\${${pvar}_level:=0}
 509         eval ${pvar}_${level}="\$$pvar"
 510         eval ${pvar}_level=$(($level+1))
 511     done
 512 }
 513
 514 popvar(){
 515     for pvar in $*; do
 516         eval level=\${${pvar}_level:-0}
 517         test $level = 0 && continue
 518         eval level=$(($level-1))
 519         eval $pvar="\${${pvar}_${level}}"
 520         eval ${pvar}_level=$level
 521         eval unset ${pvar}_${level}
 522     done
 523 }
 524
 525 enable(){
 526     set_all yes $*
 527 }
 528
 529 disable(){
 530     set_all no $*
 531 }
 532
 533 enable_weak(){
 534     set_weak yes $*
 535 }
 536
 537 disable_weak(){
 538     set_weak no $*
 539 }
 540
 541 enable_safe(){
 542     for var; do
 543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 544     done
 545 }
 546
 547 disable_safe(){
 548     for var; do
 549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 550     done
 551 }
 552
 553 do_enable_deep(){
 554     for var; do
 555         enabled $var && continue
 556         eval sel="\$${var}_select"
 557         eval sgs="\$${var}_suggest"
 558         pushvar var sgs
 559         enable_deep $sel
 560         popvar sgs
 561         enable_deep_weak $sgs
 562         popvar var
 563     done
 564 }
 565
 566 enable_deep(){
 567     do_enable_deep $*
 568     enable $*
 569 }
 570
 571 enable_deep_weak(){
 572     for var; do
 573         disabled $var && continue
 574         pushvar var
 575         do_enable_deep $var
 576         popvar var
 577         enable_weak $var
 578     done
 579 }
 580
 581 enabled(){
 582     test "${1#!}" = "$1" && op== || op=!=
 583     eval test "x\$${1#!}" $op "xyes"
 584 }
 585
 586 disabled(){
 587     test "${1#!}" = "$1" && op== || op=!=
 588     eval test "x\$${1#!}" $op "xno"
 589 }
 590
 591 enabled_all(){
 592     for opt; do
 593         enabled $opt || return 1
 594     done
 595 }
 596
 597 disabled_all(){
 598     for opt; do
 599         disabled $opt || return 1
 600     done
 601 }
 602
 603 enabled_any(){
 604     for opt; do
 605         enabled $opt && return 0
 606     done
 607 }
 608
 609 disabled_any(){
 610     for opt; do
 611         disabled $opt && return 0
 612     done
 613     return 1
 614 }
 615
 616 set_default(){
 617     for opt; do
 618         eval : \${$opt:=\$${opt}_default}
 619     done
 620 }
 621
 622 is_in(){
 623     value=$1
 624     shift
 625     for var in $*; do
 626         [ $var = $value ] && return 0
 627     done
 628     return 1
 629 }
 630
 631 do_check_deps(){
 632     for cfg; do
 633         cfg="${cfg#!}"
 634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 635         disabled ${cfg}_checking && continue
 636         enable ${cfg}_checking
 637         append allopts $cfg
 638
 639         eval dep_all="\$${cfg}_deps"
 640         eval dep_any="\$${cfg}_deps_any"
 641         eval dep_sel="\$${cfg}_select"
 642         eval dep_sgs="\$${cfg}_suggest"
 643         eval dep_ifa="\$${cfg}_if"
 644         eval dep_ifn="\$${cfg}_if_any"
 645
 646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 649
 650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 652         enabled_all  $dep_all || disable $cfg
 653         enabled_any  $dep_any || disable $cfg
 654         disabled_any $dep_sel && disable $cfg
 655
 656         if enabled $cfg; then
 657             enable_deep $dep_sel
 658             enable_deep_weak $dep_sgs
 659         fi
 660
 661         disable ${cfg}_checking
 662     done
 663 }
 664
 665 check_deps(){
 666     unset allopts
 667
 668     do_check_deps "$@"
 669
 670     for cfg in $allopts; do
 671         enabled $cfg || continue
 672         eval dep_extralibs="\$${cfg}_extralibs"
 673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 674     done
 675 }
 676
 677 print_config(){
 678     pfx=$1
 679     files=$2
 680     shift 2
 681     map 'eval echo "$v \${$v:-no}"' "$@" |
 682     awk "BEGIN { split(\"$files\", files) }
 683         {
 684             c = \"$pfx\" toupper(\$1);
 685             v = \$2;
 686             sub(/yes/, 1, v);
 687             sub(/no/,  0, v);
 688             for (f in files) {
 689                 file = files[f];
 690                 if (file ~ /\\.h\$/) {
 691                     printf(\"#define %s %d\\n\", c, v) >>file;
 692                 } else if (file ~ /\\.asm\$/) {
 693                     printf(\"%%define %s %d\\n\", c, v) >>file;
 694                 } else if (file ~ /\\.mak\$/) {
 695                     n = -v ? \"\" : \"!\";
 696                     printf(\"%s%s=yes\\n\", n, c) >>file;
 697                 } else if (file ~ /\\.texi\$/) {
 698                     pre = -v ? \"\" : \"@c \";
 699                     yesno = \$2;
 700                     c2 = tolower(c);
 701                     gsub(/_/, \"-\", c2);
 702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 703                 }
 704             }
 705         }"
 706 }
 707
 708 print_enabled(){
 709     suf=$1
 710     shift
 711     for v; do
 712         enabled $v && printf "%s\n" ${v%$suf};
 713     done
 714 }
 715
 716 append(){
 717     var=$1
 718     shift
 719     eval "$var=\"\$$var $*\""
 720 }
 721
 722 prepend(){
 723     var=$1
 724     shift
 725     eval "$var=\"$* \$$var\""
 726 }
 727
 728 add_cppflags(){
 729     append CPPFLAGS "$@"
 730 }
 731
 732 add_cflags(){
 733     append CFLAGS $($cflags_filter "$@")
 734 }
 735
 736 add_cxxflags(){
 737     append CXXFLAGS $($cflags_filter "$@")
 738 }
 739
 740 add_asflags(){
 741     append ASFLAGS $($asflags_filter "$@")
 742 }
 743
 744 add_ldflags(){
 745     append LDFLAGS $($ldflags_filter "$@")
 746 }
 747
 748 add_stripflags(){
 749     append ASMSTRIPFLAGS "$@"
 750 }
 751
 752 add_extralibs(){
 753     prepend extralibs $($ldflags_filter "$@")
 754 }
 755
 756 add_host_cppflags(){
 757     append host_cppflags "$@"
 758 }
 759
 760 add_host_cflags(){
 761     append host_cflags $($host_cflags_filter "$@")
 762 }
 763
 764 add_host_ldflags(){
 765     append host_ldflags $($host_ldflags_filter "$@")
 766 }
 767
 768 add_compat(){
 769     append compat_objs $1
 770     shift
 771     map 'add_cppflags -D$v' "$@"
 772 }
 773
 774 check_cmd(){
 775     log "$@"
 776     "$@" >> $logfile 2>&1
 777 }
 778
 779 check_stat(){
 780     log check_stat "$@"
 781     stat "$1" >> $logfile 2>&1
 782 }
 783
 784 cc_o(){
 785     eval printf '%s\\n' $CC_O
 786 }
 787
 788 cc_e(){
 789     eval printf '%s\\n' $CC_E
 790 }
 791
 792 check_cc(){
 793     log check_cc "$@"
 794     cat > $TMPC
 795     log_file $TMPC
 796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 797 }
 798
 799 check_cxx(){
 800     log check_cxx "$@"
 801     cat > $TMPCPP
 802     log_file $TMPCPP
 803     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 804 }
 805
 806 check_oc(){
 807     log check_oc "$@"
 808     cat > $TMPM
 809     log_file $TMPM
 810     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 811 }
 812
 813 check_cpp(){
 814     log check_cpp "$@"
 815     cat > $TMPC
 816     log_file $TMPC
 817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 818 }
 819
 820 as_o(){
 821     eval printf '%s\\n' $AS_O
 822 }
 823
 824 check_as(){
 825     log check_as "$@"
 826     cat > $TMPS
 827     log_file $TMPS
 828     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 829 }
 830
 831 check_inline_asm(){
 832     log check_inline_asm "$@"
 833     name="$1"
 834     code="$2"
 835     shift 2
 836     disable $name
 837     check_cc "$@" <<EOF && enable $name
 838 void foo(void){ __asm__ volatile($code); }
 839 EOF
 840 }
 841
 842 check_insn(){
 843     log check_insn "$@"
 844     check_inline_asm ${1}_inline "\"$2\""
 845     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 846 }
 847
 848 check_yasm(){
 849     log check_yasm "$@"
 850     echo "$1" > $TMPS
 851     log_file $TMPS
 852     shift 1
 853     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 854 }
 855
 856 ld_o(){
 857     eval printf '%s\\n' $LD_O
 858 }
 859
 860 check_ld(){
 861     log check_ld "$@"
 862     type=$1
 863     shift 1
 864     flags=$(filter_out '-l*|*.so' $@)
 865     libs=$(filter '-l*|*.so' $@)
 866     check_$type $($cflags_filter $flags) || return
 867     flags=$($ldflags_filter $flags)
 868     libs=$($ldflags_filter $libs)
 869     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 870 }
 871
 872 print_include(){
 873     hdr=$1
 874     test "${hdr%.h}" = "${hdr}" &&
 875         echo "#include $hdr"    ||
 876         echo "#include <$hdr>"
 877 }
 878
 879 check_code(){
 880     log check_code "$@"
 881     check=$1
 882     headers=$2
 883     code=$3
 884     shift 3
 885     {
 886         for hdr in $headers; do
 887             print_include $hdr
 888         done
 889         echo "int main(void) { $code; return 0; }"
 890     } | check_$check "$@"
 891 }
 892
 893 check_cppflags(){
 894     log check_cppflags "$@"
 895     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 896 int x;
 897 EOF
 898 }
 899
 900 test_cflags(){
 901     log test_cflags "$@"
 902     set -- $($cflags_filter "$@")
 903     check_cc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_cflags(){
 909     log check_cflags "$@"
 910     test_cflags "$@" && add_cflags "$@"
 911 }
 912
 913 check_cxxflags(){
 914     log check_cxxflags "$@"
 915     set -- $($cflags_filter "$@")
 916     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 917 int x;
 918 EOF
 919 }
 920
 921 test_ldflags(){
 922     log test_ldflags "$@"
 923     check_ld "cc" "$@" <<EOF
 924 int main(void){ return 0; }
 925 EOF
 926 }
 927
 928 check_ldflags(){
 929     log check_ldflags "$@"
 930     test_ldflags "$@" && add_ldflags "$@"
 931 }
 932
 933 test_stripflags(){
 934     log test_stripflags "$@"
 935     # call check_cc to get a fresh TMPO
 936     check_cc <<EOF
 937 int main(void) { return 0; }
 938 EOF
 939     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 940 }
 941
 942 check_stripflags(){
 943     log check_stripflags "$@"
 944     test_stripflags "$@" && add_stripflags "$@"
 945 }
 946
 947 check_header(){
 948     log check_header "$@"
 949     header=$1
 950     shift
 951     disable_safe $header
 952     check_cpp "$@" <<EOF && enable_safe $header
 953 #include <$header>
 954 int x;
 955 EOF
 956 }
 957
 958 check_header_oc(){
 959     log check_header_oc "$@"
 960     rm -f -- "$TMPO"
 961     header=$1
 962     shift
 963     disable_safe $header
 964     {
 965        echo "#include <$header>"
 966        echo "int main(void) { return 0; }"
 967     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 968 }
 969
 970 check_func(){
 971     log check_func "$@"
 972     func=$1
 973     shift
 974     disable $func
 975     check_ld "cc" "$@" <<EOF && enable $func
 976 extern int $func();
 977 int main(void){ $func(); }
 978 EOF
 979 }
 980
 981 check_mathfunc(){
 982     log check_mathfunc "$@"
 983     func=$1
 984     narg=$2
 985     shift 2
 986     test $narg = 2 && args="f, g" || args="f"
 987     disable $func
 988     check_ld "cc" "$@" <<EOF && enable $func
 989 #include <math.h>
 990 float foo(float f, float g) { return $func($args); }
 991 int main(void){ return (int) foo; }
 992 EOF
 993 }
 994
 995 check_func_headers(){
 996     log check_func_headers "$@"
 997     headers=$1
 998     funcs=$2
 999     shift 2
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         for func in $funcs; do
1005             echo "long check_$func(void) { return (long) $func; }"
1006         done
1007         echo "int main(void) { return 0; }"
1008     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1009 }
1010
1011 check_class_headers_cpp(){
1012     log check_class_headers_cpp "$@"
1013     headers=$1
1014     classes=$2
1015     shift 2
1016     {
1017         for hdr in $headers; do
1018             echo "#include <$hdr>"
1019         done
1020         echo "int main(void) { "
1021         i=1
1022         for class in $classes; do
1023             echo "$class obj$i;"
1024             i=$(expr $i + 1)
1025         done
1026         echo "return 0; }"
1027     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1028 }
1029
1030 check_cpp_condition(){
1031     log check_cpp_condition "$@"
1032     header=$1
1033     condition=$2
1034     shift 2
1035     check_cpp "$@" <<EOF
1036 #include <$header>
1037 #if !($condition)
1038 #error "unsatisfied condition: $condition"
1039 #endif
1040 EOF
1041 }
1042
1043 check_lib(){
1044     log check_lib "$@"
1045     header="$1"
1046     func="$2"
1047     shift 2
1048     check_header $header && check_func $func "$@" && add_extralibs "$@"
1049 }
1050
1051 check_lib2(){
1052     log check_lib2 "$@"
1053     headers="$1"
1054     funcs="$2"
1055     shift 2
1056     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1057 }
1058
1059 check_lib_cpp(){
1060     log check_lib_cpp "$@"
1061     headers="$1"
1062     classes="$2"
1063     shift 2
1064     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1065 }
1066
1067 check_pkg_config(){
1068     log check_pkg_config "$@"
1069     pkgandversion="$1"
1070     pkg="${1%% *}"
1071     headers="$2"
1072     funcs="$3"
1073     shift 3
1074     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1075     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1076     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1077     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1078         set_safe ${pkg}_cflags $pkg_cflags   &&
1079         set_safe ${pkg}_libs   $pkg_libs
1080 }
1081
1082 check_exec(){
1083     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1084 }
1085
1086 check_exec_crash(){
1087     code=$(cat)
1088
1089     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1090     # are safe but may not be available everywhere.  Thus we use
1091     # raise(SIGTERM) instead.  The check is run in a subshell so we
1092     # can redirect the "Terminated" message from the shell.  SIGBUS
1093     # is not defined by standard C so it is used conditionally.
1094
1095     (check_exec "$@") >> $logfile 2>&1 <<EOF
1096 #include <signal.h>
1097 static void sighandler(int sig){
1098     raise(SIGTERM);
1099 }
1100 int foo(void){
1101     $code
1102 }
1103 int (*func_ptr)(void) = foo;
1104 int main(void){
1105     signal(SIGILL, sighandler);
1106     signal(SIGFPE, sighandler);
1107     signal(SIGSEGV, sighandler);
1108 #ifdef SIGBUS
1109     signal(SIGBUS, sighandler);
1110 #endif
1111     return func_ptr();
1112 }
1113 EOF
1114 }
1115
1116 check_type(){
1117     log check_type "$@"
1118     headers=$1
1119     type=$2
1120     shift 2
1121     disable_safe "$type"
1122     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1123 }
1124
1125 check_struct(){
1126     log check_struct "$@"
1127     headers=$1
1128     struct=$2
1129     member=$3
1130     shift 3
1131     disable_safe "${struct}_${member}"
1132     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1133         enable_safe "${struct}_${member}"
1134 }
1135
1136 check_builtin(){
1137     log check_builtin "$@"
1138     name=$1
1139     headers=$2
1140     builtin=$3
1141     shift 3
1142     disable "$name"
1143     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1144 }
1145
1146 check_compile_assert(){
1147     log check_compile_assert "$@"
1148     name=$1
1149     headers=$2
1150     condition=$3
1151     shift 3
1152     disable "$name"
1153     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1154 }
1155
1156 require(){
1157     name="$1"
1158     header="$2"
1159     func="$3"
1160     shift 3
1161     check_lib $header $func "$@" || die "ERROR: $name not found"
1162 }
1163
1164 require2(){
1165     name="$1"
1166     headers="$2"
1167     func="$3"
1168     shift 3
1169     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1170 }
1171
1172 require_cpp(){
1173     name="$1"
1174     headers="$2"
1175     classes="$3"
1176     shift 3
1177     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1178 }
1179
1180 require_pkg_config(){
1181     pkg="$1"
1182     check_pkg_config "$@" || die "ERROR: $pkg not found"
1183     add_cflags    $(get_safe ${pkg}_cflags)
1184     add_extralibs $(get_safe ${pkg}_libs)
1185 }
1186
1187 require_libfreetype(){
1188     log require_libfreetype "$@"
1189     pkg="freetype2"
1190     check_cmd $pkg_config --exists --print-errors $pkg \
1191       || die "ERROR: $pkg not found"
1192     pkg_cflags=$($pkg_config --cflags $pkg)
1193     pkg_libs=$($pkg_config --libs $pkg)
1194     {
1195         echo "#include <ft2build.h>"
1196         echo "#include FT_FREETYPE_H"
1197         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1198         echo "int main(void) { return 0; }"
1199     } | check_ld "cc" $pkg_cflags $pkg_libs \
1200       && set_safe ${pkg}_cflags $pkg_cflags \
1201       && set_safe ${pkg}_libs   $pkg_libs \
1202       || die "ERROR: $pkg not found"
1203     add_cflags    $(get_safe ${pkg}_cflags)
1204     add_extralibs $(get_safe ${pkg}_libs)
1205 }
1206
1207 hostcc_e(){
1208     eval printf '%s\\n' $HOSTCC_E
1209 }
1210
1211 hostcc_o(){
1212     eval printf '%s\\n' $HOSTCC_O
1213 }
1214
1215 check_host_cc(){
1216     log check_host_cc "$@"
1217     cat > $TMPC
1218     log_file $TMPC
1219     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1220 }
1221
1222 check_host_cpp(){
1223     log check_host_cpp "$@"
1224     cat > $TMPC
1225     log_file $TMPC
1226     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1227 }
1228
1229 check_host_cppflags(){
1230     log check_host_cppflags "$@"
1231     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1232 int x;
1233 EOF
1234 }
1235
1236 check_host_cflags(){
1237     log check_host_cflags "$@"
1238     set -- $($host_cflags_filter "$@")
1239     check_host_cc "$@" <<EOF && append host_cflags "$@"
1240 int x;
1241 EOF
1242 }
1243
1244 check_host_cpp_condition(){
1245     log check_host_cpp_condition "$@"
1246     header=$1
1247     condition=$2
1248     shift 2
1249     check_host_cpp "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 apply(){
1258     file=$1
1259     shift
1260     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1261 }
1262
1263 cp_if_changed(){
1264     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1265     mkdir -p "$(dirname $2)"
1266     $cp_f "$1" "$2"
1267 }
1268
1269 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1270 # system-dependent things.
1271
1272 COMPONENT_LIST="
1273     bsfs
1274     decoders
1275     demuxers
1276     encoders
1277     filters
1278     hwaccels
1279     indevs
1280     muxers
1281     outdevs
1282     parsers
1283     protocols
1284 "
1285
1286 EXAMPLE_LIST="
1287     avio_reading_example
1288     avcodec_example
1289     demuxing_decoding_example
1290     filter_audio_example
1291     filtering_audio_example
1292     filtering_video_example
1293     metadata_example
1294     muxing_example
1295     remuxing_example
1296     resampling_audio_example
1297     scaling_video_example
1298     transcode_aac_example
1299     transcoding_example
1300 "
1301
1302 EXTERNAL_LIBRARY_LIST="
1303     avisynth
1304     bzlib
1305     crystalhd
1306     decklink
1307     fontconfig
1308     frei0r
1309     gnutls
1310     iconv
1311     ladspa
1312     libaacplus
1313     libass
1314     libbluray
1315     libcaca
1316     libcdio
1317     libcelt
1318     libdc1394
1319     libfaac
1320     libfdk_aac
1321     libflite
1322     libfreetype
1323     libgme
1324     libgsm
1325     libiec61883
1326     libilbc
1327     libmodplug
1328     libmp3lame
1329     libnut
1330     libopencore_amrnb
1331     libopencore_amrwb
1332     libopencv
1333     libopenjpeg
1334     libopus
1335     libpulse
1336     libquvi
1337     librtmp
1338     libschroedinger
1339     libshine
1340     libsoxr
1341     libspeex
1342     libssh
1343     libstagefright_h264
1344     libtheora
1345     libtwolame
1346     libutvideo
1347     libv4l2
1348     libvidstab
1349     libvo_aacenc
1350     libvo_amrwbenc
1351     libvorbis
1352     libvpx
1353     libwavpack
1354     libwebp
1355     libx264
1356     libx265
1357     libxavs
1358     libxvid
1359     libzmq
1360     libzvbi
1361     openal
1362     opencl
1363     opengl
1364     openssl
1365     x11grab
1366     xlib
1367     zlib
1368 "
1369
1370 DOCUMENT_LIST="
1371     doc
1372     htmlpages
1373     manpages
1374     podpages
1375     txtpages
1376 "
1377
1378 FEATURE_LIST="
1379     ftrapv
1380     gray
1381     hardcoded_tables
1382     runtime_cpudetect
1383     safe_bitstream_reader
1384     shared
1385     small
1386     sram
1387     static
1388     swscale_alpha
1389 "
1390
1391 HWACCEL_LIST="
1392     dxva2
1393     vaapi
1394     vda
1395     vdpau
1396     xvmc
1397 "
1398
1399 LIBRARY_LIST="
1400     avcodec
1401     avdevice
1402     avfilter
1403     avformat
1404     avresample
1405     avutil
1406     postproc
1407     swresample
1408     swscale
1409 "
1410
1411 LICENSE_LIST="
1412     gpl
1413     nonfree
1414     version3
1415 "
1416
1417 PROGRAM_LIST="
1418     ffplay
1419     ffprobe
1420     ffserver
1421     ffmpeg
1422 "
1423
1424 SUBSYSTEM_LIST="
1425     dct
1426     dwt
1427     error_resilience
1428     fast_unaligned
1429     fft
1430     lsp
1431     lzo
1432     mdct
1433     network
1434     rdft
1435 "
1436
1437 CONFIG_LIST="
1438     $COMPONENT_LIST
1439     $DOCUMENT_LIST
1440     $EXAMPLE_LIST
1441     $EXTERNAL_LIBRARY_LIST
1442     $FEATURE_LIST
1443     $HWACCEL_LIST
1444     $LICENSE_LIST
1445     $LIBRARY_LIST
1446     $PROGRAM_LIST
1447     $SUBSYSTEM_LIST
1448     incompatible_libav_abi
1449     incompatible_fork_abi
1450     memalign_hack
1451     memory_poisoning
1452     neon_clobber_test
1453     pic
1454     pod2man
1455     raise_major
1456     thumb
1457     xmm_clobber_test
1458 "
1459
1460 THREADS_LIST="
1461     pthreads
1462     os2threads
1463     w32threads
1464 "
1465
1466 ATOMICS_LIST="
1467     atomics_gcc
1468     atomics_suncc
1469     atomics_win32
1470 "
1471
1472 ARCH_LIST="
1473     aarch64
1474     alpha
1475     arm
1476     avr32
1477     avr32_ap
1478     avr32_uc
1479     bfin
1480     ia64
1481     m68k
1482     mips
1483     mips64
1484     parisc
1485     ppc
1486     ppc64
1487     s390
1488     sh4
1489     sparc
1490     sparc64
1491     tilegx
1492     tilepro
1493     tomi
1494     x86
1495     x86_32
1496     x86_64
1497 "
1498
1499 ARCH_EXT_LIST_ARM="
1500     armv5te
1501     armv6
1502     armv6t2
1503     armv8
1504     neon
1505     vfp
1506     vfpv3
1507 "
1508
1509 ARCH_EXT_LIST_MIPS="
1510     mipsfpu
1511     mips32r2
1512     mipsdspr1
1513     mipsdspr2
1514 "
1515
1516 ARCH_EXT_LIST_X86_SIMD="
1517     amd3dnow
1518     amd3dnowext
1519     avx
1520     avx2
1521     fma3
1522     fma4
1523     mmx
1524     mmxext
1525     sse
1526     sse2
1527     sse3
1528     sse4
1529     sse42
1530     ssse3
1531     xop
1532 "
1533
1534 ARCH_EXT_LIST_PPC="
1535     altivec
1536     dcbzl
1537     ldbrx
1538     ppc4xx
1539 "
1540
1541 ARCH_EXT_LIST_X86="
1542     $ARCH_EXT_LIST_X86_SIMD
1543     cpunop
1544     i686
1545 "
1546
1547 ARCH_EXT_LIST="
1548     $ARCH_EXT_LIST_ARM
1549     $ARCH_EXT_LIST_PPC
1550     $ARCH_EXT_LIST_X86
1551     $ARCH_EXT_LIST_MIPS
1552     loongson
1553 "
1554
1555 ARCH_FEATURES="
1556     aligned_stack
1557     fast_64bit
1558     fast_clz
1559     fast_cmov
1560     local_aligned_8
1561     local_aligned_16
1562 "
1563
1564 BUILTIN_LIST="
1565     atomic_cas_ptr
1566     machine_rw_barrier
1567     MemoryBarrier
1568     mm_empty
1569     rdtsc
1570     sarestart
1571     sync_val_compare_and_swap
1572 "
1573 HAVE_LIST_CMDLINE="
1574     inline_asm
1575     symver
1576     yasm
1577 "
1578
1579 HAVE_LIST_PUB="
1580     bigendian
1581     fast_unaligned
1582     incompatible_libav_abi
1583     incompatible_fork_abi
1584 "
1585
1586 HEADERS_LIST="
1587     alsa_asoundlib_h
1588     altivec_h
1589     arpa_inet_h
1590     asm_types_h
1591     cdio_paranoia_h
1592     cdio_paranoia_paranoia_h
1593     CL_cl_h
1594     dev_bktr_ioctl_bt848_h
1595     dev_bktr_ioctl_meteor_h
1596     dev_ic_bt8xx_h
1597     dev_video_bktr_ioctl_bt848_h
1598     dev_video_meteor_ioctl_meteor_h
1599     direct_h
1600     dlfcn_h
1601     dxva_h
1602     ES2_gl_h
1603     gsm_h
1604     io_h
1605     mach_mach_time_h
1606     machine_ioctl_bt848_h
1607     machine_ioctl_meteor_h
1608     malloc_h
1609     openjpeg_1_5_openjpeg_h
1610     OpenGL_gl3_h
1611     poll_h
1612     sndio_h
1613     soundcard_h
1614     sys_mman_h
1615     sys_param_h
1616     sys_resource_h
1617     sys_select_h
1618     sys_soundcard_h
1619     sys_time_h
1620     sys_un_h
1621     sys_videoio_h
1622     termios_h
1623     unistd_h
1624     windows_h
1625     winsock2_h
1626 "
1627
1628 MATH_FUNCS="
1629     atanf
1630     atan2f
1631     cbrt
1632     cbrtf
1633     cosf
1634     exp2
1635     exp2f
1636     expf
1637     isinf
1638     isnan
1639     ldexpf
1640     llrint
1641     llrintf
1642     log2
1643     log2f
1644     log10f
1645     lrint
1646     lrintf
1647     powf
1648     rint
1649     round
1650     roundf
1651     sinf
1652     trunc
1653     truncf
1654 "
1655
1656 SYSTEM_FUNCS="
1657     access
1658     aligned_malloc
1659     clock_gettime
1660     closesocket
1661     CommandLineToArgvW
1662     CryptGenRandom
1663     dlopen
1664     fcntl
1665     flt_lim
1666     fork
1667     getaddrinfo
1668     gethrtime
1669     getopt
1670     GetProcessAffinityMask
1671     GetProcessMemoryInfo
1672     GetProcessTimes
1673     getrusage
1674     getservbyport
1675     GetSystemTimeAsFileTime
1676     gettimeofday
1677     glob
1678     glXGetProcAddress
1679     inet_aton
1680     isatty
1681     jack_port_get_latency_range
1682     kbhit
1683     localtime_r
1684     lzo1x_999_compress
1685     mach_absolute_time
1686     MapViewOfFile
1687     memalign
1688     mkstemp
1689     mmap
1690     mprotect
1691     nanosleep
1692     PeekNamedPipe
1693     posix_memalign
1694     pthread_cancel
1695     sched_getaffinity
1696     SetConsoleTextAttribute
1697     setmode
1698     setrlimit
1699     Sleep
1700     strerror_r
1701     sysconf
1702     sysctl
1703     usleep
1704     VirtualAlloc
1705     wglGetProcAddress
1706 "
1707
1708 TOOLCHAIN_FEATURES="
1709     asm_mod_q
1710     attribute_may_alias
1711     attribute_packed
1712     ebp_available
1713     ebx_available
1714     gnu_as
1715     gnu_windres
1716     ibm_asm
1717     inline_asm_labels
1718     inline_asm_nonlocal_labels
1719     inline_asm_direct_symbol_refs
1720     pragma_deprecated
1721     rsync_contimeout
1722     symver_asm_label
1723     symver_gnu_asm
1724     vfp_args
1725     xform_asm
1726     xmm_clobbers
1727 "
1728
1729 TYPES_LIST="
1730     socklen_t
1731     struct_addrinfo
1732     struct_group_source_req
1733     struct_ip_mreq_source
1734     struct_ipv6_mreq
1735     struct_pollfd
1736     struct_rusage_ru_maxrss
1737     struct_sctp_event_subscribe
1738     struct_sockaddr_in6
1739     struct_sockaddr_sa_len
1740     struct_sockaddr_storage
1741     struct_stat_st_mtim_tv_nsec
1742     struct_v4l2_frmivalenum_discrete
1743 "
1744
1745 HAVE_LIST="
1746     $ARCH_EXT_LIST
1747     $(add_suffix _external $ARCH_EXT_LIST)
1748     $(add_suffix _inline   $ARCH_EXT_LIST)
1749     $ARCH_FEATURES
1750     $ATOMICS_LIST
1751     $BUILTIN_LIST
1752     $HAVE_LIST_CMDLINE
1753     $HAVE_LIST_PUB
1754     $HEADERS_LIST
1755     $MATH_FUNCS
1756     $SYSTEM_FUNCS
1757     $THREADS_LIST
1758     $TOOLCHAIN_FEATURES
1759     $TYPES_LIST
1760     atomics_native
1761     dos_paths
1762     libc_msvcrt
1763     libdc1394_1
1764     libdc1394_2
1765     makeinfo
1766     perl
1767     pod2man
1768     sdl
1769     texi2html
1770     threads
1771     vdpau_x11
1772     xlib
1773 "
1774
1775 # options emitted with CONFIG_ prefix but not available on the command line
1776 CONFIG_EXTRA="
1777     aandcttables
1778     ac3dsp
1779     audio_frame_queue
1780     cabac
1781     dsputil
1782     exif
1783     frame_thread_encoder
1784     gcrypt
1785     golomb
1786     gplv3
1787     h263dsp
1788     h264chroma
1789     h264dsp
1790     h264pred
1791     h264qpel
1792     hpeldsp
1793     huffman
1794     intrax8
1795     lgplv3
1796     llviddsp
1797     lpc
1798     mpegaudio
1799     mpegaudiodsp
1800     mpegvideo
1801     mpegvideoenc
1802     nettle
1803     rangecoder
1804     riffdec
1805     riffenc
1806     rtpdec
1807     rtpenc_chain
1808     sinewin
1809     tpeldsp
1810     videodsp
1811     vp3dsp
1812 "
1813
1814 CMDLINE_SELECT="
1815     $ARCH_EXT_LIST
1816     $CONFIG_LIST
1817     $HAVE_LIST_CMDLINE
1818     $THREADS_LIST
1819     asm
1820     cross_compile
1821     debug
1822     extra_warnings
1823     logging
1824     lto
1825     optimizations
1826     rpath
1827     stripping
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     assert_level
1847     build_suffix
1848     cc
1849     cpu
1850     cross_prefix
1851     cxx
1852     dep_cc
1853     extra_version
1854     host_cc
1855     host_cflags
1856     host_ld
1857     host_ldflags
1858     host_libs
1859     host_os
1860     install
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     progs_suffix
1869     random_seed
1870     samples
1871     strip
1872     sysinclude
1873     sysroot
1874     target_exec
1875     target_os
1876     target_path
1877     target_samples
1878     tempprefix
1879     toolchain
1880     valgrind
1881     yasmexe
1882 "
1883
1884 CMDLINE_APPEND="
1885     extra_cflags
1886     extra_cxxflags
1887     host_cppflags
1888 "
1889
1890 # code dependency declarations
1891
1892 # architecture extensions
1893
1894 armv5te_deps="arm"
1895 armv6_deps="arm"
1896 armv6t2_deps="arm"
1897 armv8_deps="aarch64"
1898 neon_deps_any="aarch64 arm"
1899 vfp_deps_any="aarch64 arm"
1900 vfpv3_deps="vfp"
1901
1902 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1903
1904 mipsfpu_deps="mips"
1905 mips32r2_deps="mips"
1906 mipsdspr1_deps="mips"
1907 mipsdspr2_deps="mips"
1908
1909 altivec_deps="ppc"
1910 ppc4xx_deps="ppc"
1911
1912 cpunop_deps="i686"
1913 x86_64_select="i686"
1914 x86_64_suggest="fast_cmov"
1915
1916 amd3dnow_deps="mmx"
1917 amd3dnowext_deps="amd3dnow"
1918 i686_deps="x86"
1919 mmx_deps="x86"
1920 mmxext_deps="mmx"
1921 sse_deps="mmxext"
1922 sse2_deps="sse"
1923 sse3_deps="sse2"
1924 ssse3_deps="sse3"
1925 sse4_deps="ssse3"
1926 sse42_deps="sse4"
1927 avx_deps="sse42"
1928 xop_deps="avx"
1929 fma3_deps="avx"
1930 fma4_deps="avx"
1931 avx2_deps="avx"
1932
1933 mmx_external_deps="yasm"
1934 mmx_inline_deps="inline_asm"
1935 mmx_suggest="mmx_external mmx_inline"
1936
1937 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1938     eval dep=\$${ext}_deps
1939     eval ${ext}_external_deps='"${dep}_external"'
1940     eval ${ext}_inline_deps='"${dep}_inline"'
1941     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1942 done
1943
1944 aligned_stack_if_any="aarch64 ppc x86"
1945 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1946 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1947 fast_unaligned_if_any="aarch64 ppc x86"
1948
1949 need_memalign="altivec neon sse"
1950
1951 # system capabilities
1952 log2_deps="!libc_msvcrt"
1953
1954 symver_if_any="symver_asm_label symver_gnu_asm"
1955
1956 # threading support
1957 atomics_gcc_if="sync_val_compare_and_swap"
1958 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1959 atomics_win32_if="MemoryBarrier"
1960 atomics_native_if_any="$ATOMICS_LIST"
1961 w32threads_deps="atomics_native"
1962 threads_if_any="$THREADS_LIST"
1963
1964 # subsystems
1965 dct_select="rdft"
1966 error_resilience_select="dsputil"
1967 frame_thread_encoder_deps="encoders threads"
1968 mdct_select="fft"
1969 rdft_select="fft"
1970 mpegaudio_select="mpegaudiodsp"
1971 mpegaudiodsp_select="dct"
1972 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1973 mpegvideoenc_select="dsputil mpegvideo"
1974
1975 # decoders / encoders
1976 aac_decoder_select="mdct sinewin"
1977 aac_encoder_select="audio_frame_queue mdct sinewin"
1978 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1979 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1980 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1981 ac3_encoder_select="mdct ac3dsp dsputil"
1982 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1983 aic_decoder_select="dsputil golomb"
1984 alac_encoder_select="lpc"
1985 als_decoder_select="dsputil"
1986 amrnb_decoder_select="lsp"
1987 amrwb_decoder_select="lsp"
1988 amv_decoder_select="sp5x_decoder exif"
1989 amv_encoder_select="aandcttables"
1990 ape_decoder_select="dsputil"
1991 asv1_decoder_select="dsputil"
1992 asv1_encoder_select="dsputil"
1993 asv2_decoder_select="dsputil"
1994 asv2_encoder_select="dsputil"
1995 atrac1_decoder_select="mdct sinewin"
1996 atrac3_decoder_select="mdct"
1997 atrac3p_decoder_select="mdct sinewin"
1998 avrn_decoder_select="exif"
1999 bink_decoder_select="dsputil hpeldsp"
2000 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2001 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2002 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2003 cllc_decoder_select="dsputil"
2004 comfortnoise_encoder_select="lpc"
2005 cook_decoder_select="dsputil mdct sinewin"
2006 cscd_decoder_select="lzo"
2007 cscd_decoder_suggest="zlib"
2008 dca_decoder_select="mdct"
2009 dirac_decoder_select="dsputil dwt golomb videodsp"
2010 dnxhd_decoder_select="dsputil"
2011 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2012 dvvideo_decoder_select="dsputil"
2013 dvvideo_encoder_select="dsputil"
2014 dxa_decoder_select="zlib"
2015 eac3_decoder_select="ac3_decoder"
2016 eac3_encoder_select="ac3_encoder"
2017 eamad_decoder_select="aandcttables dsputil mpegvideo"
2018 eatgq_decoder_select="aandcttables"
2019 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2020 exr_decoder_select="zlib"
2021 ffv1_decoder_select="golomb rangecoder"
2022 ffv1_encoder_select="rangecoder"
2023 ffvhuff_decoder_select="huffyuv_decoder"
2024 ffvhuff_encoder_select="huffyuv_encoder"
2025 fic_decoder_select="dsputil golomb"
2026 flac_decoder_select="golomb"
2027 flac_encoder_select="dsputil golomb lpc"
2028 flashsv_decoder_select="zlib"
2029 flashsv_encoder_select="zlib"
2030 flashsv2_encoder_select="zlib"
2031 flashsv2_decoder_select="zlib"
2032 flv_decoder_select="h263_decoder"
2033 flv_encoder_select="h263_encoder"
2034 fourxm_decoder_select="dsputil"
2035 fraps_decoder_select="dsputil huffman"
2036 g2m_decoder_select="dsputil zlib"
2037 g729_decoder_select="dsputil"
2038 h261_decoder_select="error_resilience mpegvideo"
2039 h261_encoder_select="aandcttables mpegvideoenc"
2040 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2041 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2042 h263i_decoder_select="h263_decoder"
2043 h263p_encoder_select="h263_encoder"
2044 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2045 h264_decoder_suggest="error_resilience"
2046 hevc_decoder_select="cabac dsputil golomb videodsp"
2047 huffyuv_decoder_select="dsputil llviddsp"
2048 huffyuv_encoder_select="dsputil huffman llviddsp"
2049 iac_decoder_select="imc_decoder"
2050 imc_decoder_select="dsputil fft mdct sinewin"
2051 indeo3_decoder_select="hpeldsp"
2052 interplay_video_decoder_select="hpeldsp"
2053 jpegls_decoder_select="golomb mjpeg_decoder"
2054 jpegls_encoder_select="golomb"
2055 jv_decoder_select="dsputil"
2056 lagarith_decoder_select="dsputil"
2057 ljpeg_encoder_select="aandcttables mpegvideoenc"
2058 loco_decoder_select="golomb"
2059 mdec_decoder_select="dsputil error_resilience mpegvideo"
2060 metasound_decoder_select="lsp mdct sinewin"
2061 mimic_decoder_select="dsputil hpeldsp"
2062 mjpeg_decoder_select="dsputil hpeldsp exif"
2063 mjpeg_encoder_select="aandcttables mpegvideoenc"
2064 mjpegb_decoder_select="mjpeg_decoder"
2065 mlp_decoder_select="mlp_parser"
2066 motionpixels_decoder_select="dsputil"
2067 mp1_decoder_select="mpegaudio"
2068 mp1float_decoder_select="mpegaudio"
2069 mp2_decoder_select="mpegaudio"
2070 mp2float_decoder_select="mpegaudio"
2071 mp3_decoder_select="mpegaudio"
2072 mp3adu_decoder_select="mpegaudio"
2073 mp3adufloat_decoder_select="mpegaudio"
2074 mp3float_decoder_select="mpegaudio"
2075 mp3on4_decoder_select="mpegaudio"
2076 mp3on4float_decoder_select="mpegaudio"
2077 mpc7_decoder_select="dsputil mpegaudiodsp"
2078 mpc8_decoder_select="mpegaudiodsp"
2079 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2080 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2081 mpeg1video_decoder_select="error_resilience mpegvideo"
2082 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2083 mpeg2video_decoder_select="error_resilience mpegvideo"
2084 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2085 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2086 mpeg4_encoder_select="h263_encoder"
2087 msmpeg4v1_decoder_select="h263_decoder"
2088 msmpeg4v2_decoder_select="h263_decoder"
2089 msmpeg4v2_encoder_select="h263_encoder"
2090 msmpeg4v3_decoder_select="h263_decoder"
2091 msmpeg4v3_encoder_select="h263_encoder"
2092 mss2_decoder_select="error_resilience vc1_decoder"
2093 mxpeg_decoder_select="mjpeg_decoder"
2094 nellymoser_decoder_select="mdct sinewin"
2095 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2096 nuv_decoder_select="dsputil lzo"
2097 png_decoder_select="zlib"
2098 png_encoder_select="dsputil zlib"
2099 prores_decoder_select="dsputil"
2100 prores_encoder_select="dsputil"
2101 qcelp_decoder_select="lsp"
2102 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2103 ra_144_encoder_select="audio_frame_queue lpc"
2104 ralf_decoder_select="golomb"
2105 rtjpeg_decoder_select="dsputil"
2106 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2107 rv10_encoder_select="h263_encoder"
2108 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2109 rv20_encoder_select="h263_encoder"
2110 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2111 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2112 shorten_decoder_select="golomb"
2113 sipr_decoder_select="lsp"
2114 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2115 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2116 sonic_decoder_select="golomb rangecoder"
2117 sonic_encoder_select="golomb rangecoder"
2118 sonic_ls_encoder_select="golomb"
2119 sp5x_decoder_select="mjpeg_decoder"
2120 svq1_decoder_select="hpeldsp"
2121 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2122 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2123 svq3_decoder_suggest="zlib"
2124 tak_decoder_select="dsputil"
2125 theora_decoder_select="vp3_decoder"
2126 thp_decoder_select="mjpeg_decoder"
2127 tiff_decoder_suggest="zlib"
2128 tiff_encoder_suggest="zlib"
2129 truehd_decoder_select="mlp_parser"
2130 truemotion2_decoder_select="dsputil"
2131 truespeech_decoder_select="dsputil"
2132 tscc_decoder_select="zlib"
2133 twinvq_decoder_select="mdct lsp sinewin"
2134 utvideo_decoder_select="dsputil"
2135 utvideo_encoder_select="dsputil huffman"
2136 vble_decoder_select="dsputil"
2137 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2138 vc1image_decoder_select="vc1_decoder"
2139 vorbis_decoder_select="mdct"
2140 vorbis_encoder_select="mdct"
2141 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2142 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2143 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2144 vp6a_decoder_select="vp6_decoder"
2145 vp6f_decoder_select="vp6_decoder"
2146 vp7_decoder_select="h264pred videodsp"
2147 vp8_decoder_select="h264pred videodsp"
2148 vp9_decoder_select="videodsp"
2149 webp_decoder_select="vp8_decoder"
2150 wmapro_decoder_select="mdct sinewin"
2151 wmav1_decoder_select="mdct sinewin"
2152 wmav1_encoder_select="mdct sinewin"
2153 wmav2_decoder_select="mdct sinewin"
2154 wmav2_encoder_select="mdct sinewin"
2155 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2156 wmv1_decoder_select="h263_decoder"
2157 wmv1_encoder_select="h263_encoder"
2158 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2159 wmv2_encoder_select="h263_encoder"
2160 wmv3_decoder_select="vc1_decoder"
2161 wmv3image_decoder_select="wmv3_decoder"
2162 zerocodec_decoder_select="zlib"
2163 zlib_decoder_select="zlib"
2164 zlib_encoder_select="zlib"
2165 zmbv_decoder_select="zlib"
2166 zmbv_encoder_select="zlib"
2167
2168 # hardware accelerators
2169 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2170 dxva2_deps="dxva2api_h"
2171 vaapi_deps="va_va_h"
2172 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2173 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2174 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2175 xvmc_deps="X11_extensions_XvMClib_h"
2176
2177 h263_vaapi_hwaccel_deps="vaapi"
2178 h263_vaapi_hwaccel_select="h263_decoder"
2179 h263_vdpau_hwaccel_deps="vdpau"
2180 h263_vdpau_hwaccel_select="h263_decoder"
2181 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2182 h264_dxva2_hwaccel_deps="dxva2"
2183 h264_dxva2_hwaccel_select="h264_decoder"
2184 h264_vaapi_hwaccel_deps="vaapi"
2185 h264_vaapi_hwaccel_select="h264_decoder"
2186 h264_vda_decoder_deps="vda"
2187 h264_vda_decoder_select="h264_decoder"
2188 h264_vda_hwaccel_deps="vda"
2189 h264_vda_hwaccel_select="h264_decoder"
2190 h264_vdpau_decoder_deps="vdpau"
2191 h264_vdpau_decoder_select="h264_decoder"
2192 h264_vdpau_hwaccel_deps="vdpau"
2193 h264_vdpau_hwaccel_select="h264_decoder"
2194 mpeg_vdpau_decoder_deps="vdpau"
2195 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2196 mpeg_xvmc_hwaccel_deps="xvmc"
2197 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2198 mpeg1_vdpau_decoder_deps="vdpau"
2199 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2200 mpeg1_vdpau_hwaccel_deps="vdpau"
2201 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2202 mpeg1_xvmc_hwaccel_deps="xvmc"
2203 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2204 mpeg2_crystalhd_decoder_select="crystalhd"
2205 mpeg2_dxva2_hwaccel_deps="dxva2"
2206 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2207 mpeg2_vaapi_hwaccel_deps="vaapi"
2208 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_vdpau_hwaccel_deps="vdpau"
2210 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2211 mpeg2_xvmc_hwaccel_deps="xvmc"
2212 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2213 mpeg4_crystalhd_decoder_select="crystalhd"
2214 mpeg4_vaapi_hwaccel_deps="vaapi"
2215 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2216 mpeg4_vdpau_decoder_deps="vdpau"
2217 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2218 mpeg4_vdpau_hwaccel_deps="vdpau"
2219 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2220 msmpeg4_crystalhd_decoder_select="crystalhd"
2221 vc1_crystalhd_decoder_select="crystalhd"
2222 vc1_dxva2_hwaccel_deps="dxva2"
2223 vc1_dxva2_hwaccel_select="vc1_decoder"
2224 vc1_vaapi_hwaccel_deps="vaapi"
2225 vc1_vaapi_hwaccel_select="vc1_decoder"
2226 vc1_vdpau_decoder_deps="vdpau"
2227 vc1_vdpau_decoder_select="vc1_decoder"
2228 vc1_vdpau_hwaccel_deps="vdpau"
2229 vc1_vdpau_hwaccel_select="vc1_decoder"
2230 wmv3_crystalhd_decoder_select="crystalhd"
2231 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2232 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2233 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2234 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2235
2236 # parsers
2237 h264_parser_select="h264_decoder"
2238 hevc_parser_select="hevc_decoder"
2239 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2240 mpegvideo_parser_select="error_resilience mpegvideo"
2241 vc1_parser_select="mpegvideo"
2242
2243 # external libraries
2244 libaacplus_encoder_deps="libaacplus"
2245 libcelt_decoder_deps="libcelt"
2246 libfaac_encoder_deps="libfaac"
2247 libfaac_encoder_select="audio_frame_queue"
2248 libfdk_aac_decoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_deps="libfdk_aac"
2250 libfdk_aac_encoder_select="audio_frame_queue"
2251 libgme_demuxer_deps="libgme"
2252 libgsm_decoder_deps="libgsm"
2253 libgsm_encoder_deps="libgsm"
2254 libgsm_ms_decoder_deps="libgsm"
2255 libgsm_ms_encoder_deps="libgsm"
2256 libilbc_decoder_deps="libilbc"
2257 libilbc_encoder_deps="libilbc"
2258 libmodplug_demuxer_deps="libmodplug"
2259 libmp3lame_encoder_deps="libmp3lame"
2260 libmp3lame_encoder_select="audio_frame_queue"
2261 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2262 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2263 libopencore_amrnb_encoder_select="audio_frame_queue"
2264 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2265 libopenjpeg_decoder_deps="libopenjpeg"
2266 libopenjpeg_encoder_deps="libopenjpeg"
2267 libopus_decoder_deps="libopus"
2268 libopus_encoder_deps="libopus"
2269 libopus_encoder_select="audio_frame_queue"
2270 libquvi_demuxer_deps="libquvi"
2271 libschroedinger_decoder_deps="libschroedinger"
2272 libschroedinger_encoder_deps="libschroedinger"
2273 libshine_encoder_deps="libshine"
2274 libshine_encoder_select="audio_frame_queue"
2275 libspeex_decoder_deps="libspeex"
2276 libspeex_encoder_deps="libspeex"
2277 libspeex_encoder_select="audio_frame_queue"
2278 libstagefright_h264_decoder_deps="libstagefright_h264"
2279 libtheora_encoder_deps="libtheora"
2280 libtwolame_encoder_deps="libtwolame"
2281 libvo_aacenc_encoder_deps="libvo_aacenc"
2282 libvo_aacenc_encoder_select="audio_frame_queue"
2283 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2284 libvorbis_decoder_deps="libvorbis"
2285 libvorbis_encoder_deps="libvorbis"
2286 libvorbis_encoder_select="audio_frame_queue"
2287 libvpx_vp8_decoder_deps="libvpx"
2288 libvpx_vp8_encoder_deps="libvpx"
2289 libvpx_vp9_decoder_deps="libvpx"
2290 libvpx_vp9_encoder_deps="libvpx"
2291 libwavpack_encoder_deps="libwavpack"
2292 libwebp_encoder_deps="libwebp"
2293 libx264_encoder_deps="libx264"
2294 libx264rgb_encoder_deps="libx264"
2295 libx265_encoder_deps="libx265"
2296 libxavs_encoder_deps="libxavs"
2297 libxvid_encoder_deps="libxvid"
2298 libutvideo_decoder_deps="libutvideo"
2299 libutvideo_encoder_deps="libutvideo"
2300 libzvbi_teletext_decoder_deps="libzvbi"
2301
2302 # demuxers / muxers
2303 ac3_demuxer_select="ac3_parser"
2304 asf_demuxer_select="riffdec"
2305 asf_muxer_select="riffenc"
2306 asf_stream_muxer_select="asf_muxer"
2307 avi_demuxer_select="riffdec"
2308 avi_muxer_select="riffenc"
2309 avisynth_demuxer_deps="avisynth"
2310 avisynth_demuxer_select="riffdec"
2311 caf_demuxer_select="riffdec"
2312 dirac_demuxer_select="dirac_parser"
2313 dts_demuxer_select="dca_parser"
2314 dtshd_demuxer_select="dca_parser"
2315 dxa_demuxer_select="riffdec"
2316 eac3_demuxer_select="ac3_parser"
2317 f4v_muxer_select="mov_muxer"
2318 flac_demuxer_select="flac_parser"
2319 hds_muxer_select="flv_muxer"
2320 hls_muxer_select="mpegts_muxer"
2321 ipod_muxer_select="mov_muxer"
2322 ismv_muxer_select="mov_muxer"
2323 libnut_demuxer_deps="libnut"
2324 libnut_muxer_deps="libnut"
2325 matroska_audio_muxer_select="matroska_muxer"
2326 matroska_demuxer_select="riffdec"
2327 matroska_demuxer_suggest="bzlib lzo zlib"
2328 matroska_muxer_select="riffenc"
2329 mmf_muxer_select="riffenc"
2330 mov_demuxer_select="riffdec"
2331 mov_demuxer_suggest="zlib"
2332 mov_muxer_select="riffenc rtpenc_chain"
2333 mp3_demuxer_select="mpegaudio_parser"
2334 mp4_muxer_select="mov_muxer"
2335 mpegts_muxer_select="adts_muxer latm_muxer"
2336 mpegtsraw_demuxer_select="mpegts_demuxer"
2337 mxf_d10_muxer_select="mxf_muxer"
2338 nut_muxer_select="riffenc"
2339 nuv_demuxer_select="riffdec"
2340 ogg_demuxer_select="golomb"
2341 psp_muxer_select="mov_muxer"
2342 rtp_demuxer_select="sdp_demuxer"
2343 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2344 rtsp_demuxer_select="http_protocol rtpdec"
2345 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2346 sap_demuxer_select="sdp_demuxer"
2347 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2348 sdp_demuxer_select="rtpdec"
2349 smoothstreaming_muxer_select="ismv_muxer"
2350 spdif_muxer_select="aac_parser"
2351 tak_demuxer_select="tak_parser"
2352 tg2_muxer_select="mov_muxer"
2353 tgp_muxer_select="mov_muxer"
2354 vobsub_demuxer_select="mpegps_demuxer"
2355 w64_demuxer_select="wav_demuxer"
2356 w64_muxer_select="wav_muxer"
2357 wav_demuxer_select="riffdec"
2358 wav_muxer_select="riffenc"
2359 webm_muxer_select="riffenc"
2360 wtv_demuxer_select="riffdec"
2361 wtv_muxer_select="riffenc"
2362 xmv_demuxer_select="riffdec"
2363 xwma_demuxer_select="riffdec"
2364
2365 # indevs / outdevs
2366 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2367 alsa_outdev_deps="alsa_asoundlib_h"
2368 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2369 caca_outdev_deps="libcaca"
2370 decklink_outdev_deps="decklink pthreads"
2371 decklink_outdev_extralibs="-lstdc++"
2372 dshow_indev_deps="IBaseFilter"
2373 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2374 dv1394_indev_deps="dv1394"
2375 dv1394_indev_select="dv_demuxer"
2376 fbdev_indev_deps="linux_fb_h"
2377 fbdev_outdev_deps="linux_fb_h"
2378 gdigrab_indev_deps="CreateDIBSection"
2379 gdigrab_indev_extralibs="-lgdi32"
2380 gdigrab_indev_select="bmp_decoder"
2381 iec61883_indev_deps="libiec61883"
2382 jack_indev_deps="jack_jack_h sem_timedwait"
2383 lavfi_indev_deps="avfilter"
2384 libcdio_indev_deps="libcdio"
2385 libdc1394_indev_deps="libdc1394"
2386 libv4l2_indev_deps="libv4l2"
2387 openal_indev_deps="openal"
2388 opengl_outdev_deps="opengl"
2389 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2390 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2391 pulse_indev_deps="libpulse"
2392 pulse_outdev_deps="libpulse"
2393 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2394 qtkit_indev_select="qtkit"
2395 sdl_outdev_deps="sdl"
2396 sndio_indev_deps="sndio_h"
2397 sndio_outdev_deps="sndio_h"
2398 v4l_indev_deps="linux_videodev_h"
2399 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2400 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2401 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2402 vfwcap_indev_extralibs="-lavicap32"
2403 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2404 xv_outdev_extralibs="-lXv -lX11 -lXext"
2405 x11grab_indev_deps="x11grab"
2406
2407 # protocols
2408 bluray_protocol_deps="libbluray"
2409 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2410 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2411 ffrtmpcrypt_protocol_select="tcp_protocol"
2412 ffrtmphttp_protocol_deps="!librtmp_protocol"
2413 ffrtmphttp_protocol_select="http_protocol"
2414 ftp_protocol_select="tcp_protocol"
2415 gopher_protocol_select="network"
2416 http_protocol_select="tcp_protocol"
2417 httpproxy_protocol_select="tcp_protocol"
2418 https_protocol_select="tls_protocol"
2419 librtmp_protocol_deps="librtmp"
2420 librtmpe_protocol_deps="librtmp"
2421 librtmps_protocol_deps="librtmp"
2422 librtmpt_protocol_deps="librtmp"
2423 librtmpte_protocol_deps="librtmp"
2424 libssh_protocol_deps="libssh"
2425 mmsh_protocol_select="http_protocol"
2426 mmst_protocol_select="network"
2427 rtmp_protocol_deps="!librtmp_protocol"
2428 rtmp_protocol_select="tcp_protocol"
2429 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2430 rtmps_protocol_deps="!librtmp_protocol"
2431 rtmps_protocol_select="tls_protocol"
2432 rtmpt_protocol_select="ffrtmphttp_protocol"
2433 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2434 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2435 rtp_protocol_select="udp_protocol"
2436 sctp_protocol_deps="struct_sctp_event_subscribe"
2437 sctp_protocol_select="network"
2438 srtp_protocol_select="rtp_protocol"
2439 tcp_protocol_select="network"
2440 tls_protocol_deps_any="openssl gnutls"
2441 tls_protocol_select="tcp_protocol"
2442 udp_protocol_select="network"
2443 unix_protocol_deps="sys_un_h"
2444 unix_protocol_select="network"
2445
2446 # filters
2447 aconvert_filter_deps="swresample"
2448 amovie_filter_deps="avcodec avformat"
2449 aresample_filter_deps="swresample"
2450 ass_filter_deps="libass"
2451 asyncts_filter_deps="avresample"
2452 atempo_filter_deps="avcodec"
2453 atempo_filter_select="rdft"
2454 azmq_filter_deps="libzmq"
2455 blackframe_filter_deps="gpl"
2456 boxblur_filter_deps="gpl"
2457 colormatrix_filter_deps="gpl"
2458 cropdetect_filter_deps="gpl"
2459 dctdnoiz_filter_deps="avcodec"
2460 dctdnoiz_filter_select="dct"
2461 delogo_filter_deps="gpl"
2462 deshake_filter_deps="avcodec"
2463 deshake_filter_select="dsputil"
2464 drawtext_filter_deps="libfreetype"
2465 ebur128_filter_deps="gpl"
2466 flite_filter_deps="libflite"
2467 frei0r_filter_deps="frei0r dlopen"
2468 frei0r_filter_extralibs='$ldl'
2469 frei0r_src_filter_deps="frei0r dlopen"
2470 frei0r_src_filter_extralibs='$ldl'
2471 geq_filter_deps="gpl"
2472 histeq_filter_deps="gpl"
2473 hqdn3d_filter_deps="gpl"
2474 interlace_filter_deps="gpl"
2475 kerndeint_filter_deps="gpl"
2476 ladspa_filter_deps="ladspa dlopen"
2477 mcdeint_filter_deps="avcodec gpl"
2478 movie_filter_deps="avcodec avformat"
2479 mp_filter_deps="gpl avcodec swscale inline_asm"
2480 mpdecimate_filter_deps="gpl avcodec"
2481 mptestsrc_filter_deps="gpl"
2482 negate_filter_deps="lut_filter"
2483 perspective_filter_deps="gpl"
2484 ocv_filter_deps="libopencv"
2485 owdenoise_filter_deps="gpl"
2486 pan_filter_deps="swresample"
2487 phase_filter_deps="gpl"
2488 pp_filter_deps="gpl postproc"
2489 pullup_filter_deps="gpl"
2490 removelogo_filter_deps="avcodec avformat swscale"
2491 resample_filter_deps="avresample"
2492 sab_filter_deps="gpl swscale"
2493 scale_filter_deps="swscale"
2494 smartblur_filter_deps="gpl swscale"
2495 showspectrum_filter_deps="avcodec"
2496 showspectrum_filter_select="rdft"
2497 spp_filter_deps="gpl avcodec"
2498 spp_filter_select="fft"
2499 stereo3d_filter_deps="gpl"
2500 subtitles_filter_deps="avformat avcodec libass"
2501 super2xsai_filter_deps="gpl"
2502 tinterlace_filter_deps="gpl"
2503 vidstabdetect_filter_deps="libvidstab"
2504 vidstabtransform_filter_deps="libvidstab"
2505 pixfmts_super2xsai_test_deps="super2xsai_filter"
2506 tinterlace_merge_test_deps="tinterlace_filter"
2507 tinterlace_pad_test_deps="tinterlace_filter"
2508 zmq_filter_deps="libzmq"
2509
2510 # examples
2511 avio_reading="avformat avcodec avutil"
2512 avcodec_example_deps="avcodec avutil"
2513 demuxing_decoding_example_deps="avcodec avformat avutil"
2514 filter_audio_example_deps="avfilter avutil"
2515 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2516 filtering_video_example_deps="avfilter avcodec avformat avutil"
2517 metadata_example_deps="avformat avutil"
2518 muxing_example_deps="avcodec avformat avutil swscale"
2519 remuxing_example_deps="avcodec avformat avutil"
2520 resampling_audio_example_deps="avutil swresample"
2521 scaling_video_example_deps="avutil swscale"
2522 transcode_aac_example_deps="avcodec avformat swresample"
2523 transcoding_example_deps="avfilter avcodec avformat avutil"
2524
2525 # libraries
2526 avcodec_deps="avutil"
2527 avdevice_deps="avutil avcodec avformat"
2528 avfilter_deps="avutil"
2529 avformat_deps="avutil avcodec"
2530 avresample_deps="avutil"
2531 postproc_deps="avutil gpl"
2532 swscale_deps="avutil"
2533
2534 # programs
2535 ffmpeg_deps="avcodec avfilter avformat swresample"
2536 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2537                null_filter
2538                setpts_filter trim_filter"
2539 ffplay_deps="avcodec avformat swscale swresample sdl"
2540 ffplay_libs='$sdl_libs'
2541 ffplay_select="rdft crop_filter"
2542 ffprobe_deps="avcodec avformat"
2543 ffserver_deps="avformat fork sarestart"
2544 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2545
2546 # documentation
2547 podpages_deps="perl"
2548 manpages_deps="perl pod2man"
2549 htmlpages_deps="perl texi2html"
2550 txtpages_deps="perl makeinfo"
2551 doc_deps_any="manpages htmlpages podpages txtpages"
2552
2553 # default parameters
2554
2555 logfile="config.log"
2556
2557 # installation paths
2558 prefix_default="/usr/local"
2559 bindir_default='${prefix}/bin'
2560 datadir_default='${prefix}/share/ffmpeg'
2561 docdir_default='${prefix}/share/doc/ffmpeg'
2562 incdir_default='${prefix}/include'
2563 libdir_default='${prefix}/lib'
2564 mandir_default='${prefix}/share/man'
2565 shlibdir_default="$libdir_default"
2566
2567 # toolchain
2568 ar_default="ar"
2569 cc_default="gcc"
2570 cxx_default="g++"
2571 host_cc_default="gcc"
2572 cp_f="cp -f"
2573 install="install"
2574 ln_s="ln -s -f"
2575 nm_default="nm -g"
2576 objformat="elf"
2577 pkg_config_default=pkg-config
2578 ranlib="ranlib"
2579 strip_default="strip"
2580 yasmexe_default="yasm"
2581 windres_default="windres"
2582
2583 nogas=":"
2584
2585 # OS
2586 target_os_default=$(tolower $(uname -s))
2587 host_os=$target_os_default
2588
2589 # machine
2590 if test "$target_os_default" = aix; then
2591     arch_default=$(uname -p)
2592 else
2593     arch_default=$(uname -m)
2594 fi
2595 cpu="generic"
2596
2597 # configurable options
2598 enable $PROGRAM_LIST
2599 enable $DOCUMENT_LIST
2600 enable $EXAMPLE_LIST
2601 enable $(filter_out avresample $LIBRARY_LIST)
2602 enable stripping
2603
2604 enable asm
2605 enable debug
2606 enable doc
2607 enable optimizations
2608 enable runtime_cpudetect
2609 enable safe_bitstream_reader
2610 enable static
2611 enable swscale_alpha
2612
2613 # Enable hwaccels by default.
2614 enable dxva2 vaapi vda vdpau xvmc
2615 enable xlib
2616
2617 # build settings
2618 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2619 LIBPREF="lib"
2620 LIBSUF=".a"
2621 FULLNAME='$(NAME)$(BUILDSUF)'
2622 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2623 SLIBPREF="lib"
2624 SLIBSUF=".so"
2625 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2626 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2627 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2628 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2629 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2630 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2631
2632 asflags_filter=echo
2633 cflags_filter=echo
2634 ldflags_filter=echo
2635
2636 AS_C='-c'
2637 AS_O='-o $@'
2638 CC_C='-c'
2639 CC_E='-E -o $@'
2640 CC_O='-o $@'
2641 CXX_C='-c'
2642 CXX_O='-o $@'
2643 LD_O='-o $@'
2644 LD_LIB='-l%'
2645 LD_PATH='-L'
2646 HOSTCC_C='-c'
2647 HOSTCC_E='-E -o $@'
2648 HOSTCC_O='-o $@'
2649 HOSTLD_O='-o $@'
2650
2651 host_libs='-lm'
2652 host_cflags_filter=echo
2653 host_ldflags_filter=echo
2654
2655 target_path='$(CURDIR)'
2656
2657 # since the object filename is not given with the -MM flag, the compiler
2658 # is only able to print the basename, and we must add the path ourselves
2659 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2660 DEPFLAGS='-MM'
2661
2662 # find source path
2663 if test -f configure; then
2664     source_path=.
2665 else
2666     source_path=$(cd $(dirname "$0"); pwd)
2667     echo "$source_path" | grep -q '[[:blank:]]' &&
2668         die "Out of tree builds are impossible with whitespace in source path."
2669     test -e "$source_path/config.h" &&
2670         die "Out of tree builds are impossible with config.h in source dir."
2671 fi
2672
2673 for v in "$@"; do
2674     r=${v#*=}
2675     l=${v%"$r"}
2676     r=$(sh_quote "$r")
2677     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2678 done
2679
2680 find_things(){
2681     thing=$1
2682     pattern=$2
2683     file=$source_path/$3
2684     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2685 }
2686
2687 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2688 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2689 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2690 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2691 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2692 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2693 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2694 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2695 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2696 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2697 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2698
2699 ALL_COMPONENTS="
2700     $BSF_LIST
2701     $DECODER_LIST
2702     $DEMUXER_LIST
2703     $ENCODER_LIST
2704     $FILTER_LIST
2705     $HWACCEL_LIST
2706     $INDEV_LIST
2707     $MUXER_LIST
2708     $OUTDEV_LIST
2709     $PARSER_LIST
2710     $PROTOCOL_LIST
2711 "
2712
2713 for n in $COMPONENT_LIST; do
2714     v=$(toupper ${n%s})_LIST
2715     eval enable \$$v
2716     eval ${n}_if_any="\$$v"
2717 done
2718
2719 enable $ARCH_EXT_LIST
2720
2721 die_unknown(){
2722     echo "Unknown option \"$1\"."
2723     echo "See $0 --help for available options."
2724     exit 1
2725 }
2726
2727 print_3_columns() {
2728     cat | tr ' ' '\n' | sort | pr -r -3 -t
2729 }
2730
2731 show_list() {
2732     suffix=_$1
2733     shift
2734     echo $* | sed s/$suffix//g | print_3_columns
2735     exit 0
2736 }
2737
2738 rand_list(){
2739     IFS=', '
2740     set -- $*
2741     unset IFS
2742     for thing; do
2743         comp=${thing%:*}
2744         prob=${thing#$comp}
2745         prob=${prob#:}
2746         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2747         echo "prob ${prob:-0.5}"
2748         printf '%s\n' $comp
2749     done
2750 }
2751
2752 do_random(){
2753     action=$1
2754     shift
2755     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2756     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2757 }
2758
2759 for opt do
2760     optval="${opt#*=}"
2761     case "$opt" in
2762         --extra-ldflags=*)
2763             add_ldflags $optval
2764         ;;
2765         --extra-libs=*)
2766             add_extralibs $optval
2767         ;;
2768         --disable-devices)
2769             disable $INDEV_LIST $OUTDEV_LIST
2770         ;;
2771         --enable-debug=*)
2772             debuglevel="$optval"
2773         ;;
2774         --disable-programs)
2775             disable $PROGRAM_LIST
2776         ;;
2777         --disable-everything)
2778             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2779         ;;
2780         --disable-all)
2781             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2782             disable $LIBRARY_LIST $PROGRAM_LIST doc
2783         ;;
2784         --enable-random|--disable-random)
2785             action=${opt%%-random}
2786             do_random ${action#--} $COMPONENT_LIST
2787         ;;
2788         --enable-random=*|--disable-random=*)
2789             action=${opt%%-random=*}
2790             do_random ${action#--} $optval
2791         ;;
2792         --enable-*=*|--disable-*=*)
2793             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2794             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2795             eval list=\$$(toupper $thing)_LIST
2796             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2797             list=$(filter "$name" $list)
2798             [ "$list" = "" ] && warn "Option $opt did not match anything"
2799             $action $list
2800         ;;
2801         --enable-?*|--disable-?*)
2802             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2803             if is_in $option $COMPONENT_LIST; then
2804                 test $action = disable && action=unset
2805                 eval $action \$$(toupper ${option%s})_LIST
2806             elif is_in $option $CMDLINE_SELECT; then
2807                 $action $option
2808             else
2809                 die_unknown $opt
2810             fi
2811         ;;
2812         --list-*)
2813             NAME="${opt#--list-}"
2814             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2815             NAME=${NAME%s}
2816             eval show_list $NAME \$$(toupper $NAME)_LIST
2817         ;;
2818         --help|-h) show_help
2819         ;;
2820         --fatal-warnings) enable fatal_warnings
2821         ;;
2822         *)
2823             optname="${opt%%=*}"
2824             optname="${optname#--}"
2825             optname=$(echo "$optname" | sed 's/-/_/g')
2826             if is_in $optname $CMDLINE_SET; then
2827                 eval $optname='$optval'
2828             elif is_in $optname $CMDLINE_APPEND; then
2829                 append $optname "$optval"
2830             else
2831                 die_unknown $opt
2832             fi
2833         ;;
2834     esac
2835 done
2836
2837 disabled logging && logfile=/dev/null
2838
2839 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2840 set >> $logfile
2841
2842 test -n "$cross_prefix" && enable cross_compile
2843
2844 if enabled cross_compile; then
2845     test -n "$arch" && test -n "$target_os" ||
2846         die "Must specify target arch and OS when cross-compiling"
2847 fi
2848
2849 ar_default="${cross_prefix}${ar_default}"
2850 cc_default="${cross_prefix}${cc_default}"
2851 cxx_default="${cross_prefix}${cxx_default}"
2852 nm_default="${cross_prefix}${nm_default}"
2853 pkg_config_default="${cross_prefix}${pkg_config_default}"
2854 ranlib="${cross_prefix}${ranlib}"
2855 strip_default="${cross_prefix}${strip_default}"
2856 windres_default="${cross_prefix}${windres_default}"
2857
2858 sysinclude_default="${sysroot}/usr/include"
2859
2860 test -n "$valgrind" && toolchain="valgrind-memcheck"
2861
2862 case "$toolchain" in
2863     clang-asan)
2864         cc_default="clang"
2865         add_cflags  -fsanitize=address
2866         add_ldflags -fsanitize=address
2867     ;;
2868     clang-tsan)
2869         cc_default="clang"
2870         add_cflags  -fsanitize=thread -pie
2871         add_ldflags -fsanitize=thread -pie
2872     ;;
2873     clang-usan)
2874         cc_default="clang"
2875         add_cflags  -fsanitize=undefined
2876         add_ldflags -fsanitize=undefined
2877     ;;
2878     gcc-asan)
2879         cc_default="gcc"
2880         add_cflags  -fsanitize=address
2881         add_ldflags -fsanitize=address
2882     ;;
2883     gcc-tsan)
2884         cc_default="gcc"
2885         add_cflags  -fsanitize=thread -pie -fPIC
2886         add_ldflags -fsanitize=thread -pie -fPIC
2887     ;;
2888     gcc-usan)
2889         cc_default="gcc"
2890         add_cflags  -fsanitize=undefined
2891         add_ldflags -fsanitize=undefined
2892     ;;
2893     valgrind-massif)
2894         target_exec_default=${valgrind:-"valgrind"}
2895         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"
2896     ;;
2897     valgrind-memcheck)
2898         target_exec_default=${valgrind:-"valgrind"}
2899         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2900     ;;
2901     msvc)
2902         # Check whether the current MSVC version needs the C99 converter.
2903         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2904         # support enough of C99 to build ffmpeg. Default to the new
2905         # behaviour if the regexp was unable to match anything, since this
2906         # successfully parses the version number of existing supported
2907         # versions that require the converter (MSVC 2010 and 2012).
2908         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2909         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2910             cc_default="cl"
2911         else
2912             cc_default="c99wrap cl"
2913         fi
2914         ld_default="link"
2915         nm_default="dumpbin -symbols"
2916         ar_default="lib"
2917         target_os_default="win32"
2918         # Use a relative path for TMPDIR. This makes sure all the
2919         # ffconf temp files are written with a relative path, avoiding
2920         # issues with msys/win32 path conversion for MSVC parameters
2921         # such as -Fo<file> or -out:<file>.
2922         TMPDIR=.
2923     ;;
2924     icl)
2925         cc_default="icl"
2926         ld_default="xilink"
2927         nm_default="dumpbin -symbols"
2928         ar_default="xilib"
2929         target_os_default="win32"
2930         TMPDIR=.
2931     ;;
2932     gcov)
2933         add_cflags  -fprofile-arcs -ftest-coverage
2934         add_ldflags -fprofile-arcs -ftest-coverage
2935     ;;
2936     hardened)
2937         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2938         add_ldflags -Wl,-z,relro -Wl,-z,now
2939     ;;
2940     ?*)
2941         die "Unknown toolchain $toolchain"
2942     ;;
2943 esac
2944
2945 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2946 enabled cross_compile || host_cc_default=$cc
2947 set_default host_cc
2948
2949 if ! $pkg_config --version >/dev/null 2>&1; then
2950     warn "$pkg_config not found, library detection may fail."
2951     pkg_config=false
2952 fi
2953
2954 exesuf() {
2955     case $1 in
2956         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2957     esac
2958 }
2959
2960 EXESUF=$(exesuf $target_os)
2961 HOSTEXESUF=$(exesuf $host_os)
2962
2963 # set temporary file name
2964 : ${TMPDIR:=$TEMPDIR}
2965 : ${TMPDIR:=$TMP}
2966 : ${TMPDIR:=/tmp}
2967
2968 if [ -n "$tempprefix" ] ; then
2969     mktemp(){
2970         echo $tempprefix.${HOSTNAME}.${UID}
2971     }
2972 elif ! check_cmd mktemp -u XXXXXX; then
2973     # simple replacement for missing mktemp
2974     # NOT SAFE FOR GENERAL USE
2975     mktemp(){
2976         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2977     }
2978 fi
2979
2980 tmpfile(){
2981     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2982         (set -C; exec > $tmp) 2>/dev/null ||
2983         die "Unable to create temporary file in $TMPDIR."
2984     append TMPFILES $tmp
2985     eval $1=$tmp
2986 }
2987
2988 trap 'rm -f -- $TMPFILES' EXIT
2989
2990 tmpfile TMPASM .asm
2991 tmpfile TMPC   .c
2992 tmpfile TMPCPP .cpp
2993 tmpfile TMPE   $EXESUF
2994 tmpfile TMPH   .h
2995 tmpfile TMPM   .m
2996 tmpfile TMPO   .o
2997 tmpfile TMPS   .S
2998 tmpfile TMPSH  .sh
2999 tmpfile TMPV   .ver
3000
3001 unset -f mktemp
3002
3003 chmod +x $TMPE
3004
3005 # make sure we can execute files in $TMPDIR
3006 cat > $TMPSH 2>> $logfile <<EOF
3007 #! /bin/sh
3008 EOF
3009 chmod +x $TMPSH >> $logfile 2>&1
3010 if ! $TMPSH >> $logfile 2>&1; then
3011     cat <<EOF
3012 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3013 variable to another directory and make sure that it is not mounted noexec.
3014 EOF
3015     die "Sanity test failed."
3016 fi
3017
3018 ccc_flags(){
3019     for flag; do
3020         case $flag in
3021             -std=c99)           echo -c99                       ;;
3022             -mcpu=*)            echo -arch ${flag#*=}           ;;
3023             -mieee)             echo -ieee                      ;;
3024             -O*|-fast)          echo $flag                      ;;
3025             -fno-math-errno)    echo -assume nomath_errno       ;;
3026             -g)                 echo -g3                        ;;
3027             -Wall)              echo -msg_enable level2         ;;
3028             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3029             -Wl,*)              echo $flag                      ;;
3030             -f*|-W*)                                            ;;
3031             *)                  echo $flag                      ;;
3032         esac
3033    done
3034 }
3035
3036 cparser_flags(){
3037     for flag; do
3038         case $flag in
3039             -Wno-switch)             echo -Wno-switch-enum ;;
3040             -Wno-format-zero-length) ;;
3041             -Wdisabled-optimization) ;;
3042             -Wno-pointer-sign)       echo -Wno-other ;;
3043             *)                       echo $flag ;;
3044         esac
3045     done
3046 }
3047
3048 msvc_common_flags(){
3049     for flag; do
3050         case $flag in
3051             # In addition to specifying certain flags under the compiler
3052             # specific filters, they must be specified here as well or else the
3053             # generic catch all at the bottom will print the original flag.
3054             -Wall)                ;;
3055             -std=c99)             ;;
3056             # Common flags
3057             -fomit-frame-pointer) ;;
3058             -g)                   echo -Z7 ;;
3059             -fno-math-errno)      ;;
3060             -fno-common)          ;;
3061             -fno-signed-zeros)    ;;
3062             -fPIC)                ;;
3063             -mthumb)              ;;
3064             -march=*)             ;;
3065             -lz)                  echo zlib.lib ;;
3066             -lavifil32)           echo vfw32.lib ;;
3067             -lavicap32)           echo vfw32.lib user32.lib ;;
3068             -l*)                  echo ${flag#-l}.lib ;;
3069             *)                    echo $flag ;;
3070         esac
3071     done
3072 }
3073
3074 msvc_flags(){
3075     msvc_common_flags "$@"
3076     for flag; do
3077         case $flag in
3078             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3079                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3080                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3081                                        -wd4554 \
3082                                        -wd4273 ;;
3083         esac
3084     done
3085 }
3086
3087 icl_flags(){
3088     msvc_common_flags "$@"
3089     for flag; do
3090         case $flag in
3091             # Despite what Intel's documentation says -Wall, which is supported
3092             # on Windows, does enable remarks so disable them here.
3093             -Wall)                echo $flag -Qdiag-disable:remark ;;
3094             -std=c99)             echo -Qstd=c99 ;;
3095         esac
3096     done
3097 }
3098
3099 pgi_flags(){
3100     for flag; do
3101         case $flag in
3102             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3103             -fomit-frame-pointer) echo -Mnoframe ;;
3104             -g)                   echo -gopt ;;
3105             *)                    echo $flag ;;
3106         esac
3107     done
3108 }
3109
3110 suncc_flags(){
3111     for flag; do
3112         case $flag in
3113             -march=*|-mcpu=*)
3114                 case "${flag#*=}" in
3115                     native)                   echo -xtarget=native       ;;
3116                     v9|niagara)               echo -xarch=sparc          ;;
3117                     ultrasparc)               echo -xarch=sparcvis       ;;
3118                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3119                     i586|pentium)             echo -xchip=pentium        ;;
3120                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3121                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3122                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3123                     pentium4*)          echo -xtarget=pentium4           ;;
3124                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3125                     *-sse3)             echo -xarch=sse3                 ;;
3126                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3127                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3128                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3129                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3130                     bdver*)                    echo -xarch=avx           ;;
3131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3132                     k8|opteron|athlon64|athlon-fx)
3133                                                echo -xarch=sse2a         ;;
3134                     athlon*)                   echo -xarch=pentium_proa  ;;
3135                 esac
3136                 ;;
3137             -std=c99)             echo -xc99              ;;
3138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3139             -fPIC)                echo -KPIC -xcode=pic32 ;;
3140             -W*,*)                echo $flag              ;;
3141             -f*-*|-W*|-mimpure-text)                      ;;
3142             -shared)              echo -G                 ;;
3143             *)                    echo $flag              ;;
3144         esac
3145     done
3146 }
3147
3148 tms470_flags(){
3149     for flag; do
3150         case $flag in
3151             -march=*|-mcpu=*)
3152                 case "${flag#*=}" in
3153                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3154                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3155                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3156                     armv6*|arm11*)          echo -mv=6   ;;
3157                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3158                                             echo -mv=5e  ;;
3159                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3160                 esac
3161                 ;;
3162             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3163             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3164             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3165             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3166             -msoft-float)   echo --float_support=vfplib       ;;
3167             -O[0-3]|-mf=*)  echo $flag                        ;;
3168             -g)             echo -g -mn                       ;;
3169             -pds=*)         echo $flag                        ;;
3170             -D*|-I*)        echo $flag                        ;;
3171             --gcc|--abi=*)  echo $flag                        ;;
3172             -me)            echo $flag                        ;;
3173         esac
3174     done
3175 }
3176
3177 probe_cc(){
3178     pfx=$1
3179     _cc=$2
3180
3181     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3182     unset _ld_o _ldflags _ld_lib _ld_path
3183     unset _depflags _DEPCMD _DEPFLAGS
3184     _flags_filter=echo
3185
3186     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3187         true # no-op to avoid reading stdin in following checks
3188     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3189         _type=llvm_gcc
3190         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3191         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3192         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3193         _cflags_speed='-O3'
3194         _cflags_size='-Os'
3195     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3196         _type=gcc
3197         gcc_version=$($_cc --version | head -n1)
3198         gcc_basever=$($_cc -dumpversion)
3199         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3200         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3201         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3202         if ! $_cc -dumpversion | grep -q '^2\.'; then
3203             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3204         fi
3205         _cflags_speed='-O3'
3206         _cflags_size='-Os'
3207     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3208         _type=icc
3209         _ident=$($_cc --version | head -n1)
3210         _depflags='-MMD'
3211         _cflags_speed='-O3'
3212         _cflags_size='-Os'
3213         _cflags_noopt='-O1'
3214     elif $_cc -v 2>&1 | grep -q xlc; then
3215         _type=xlc
3216         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3217         _cflags_speed='-O5'
3218         _cflags_size='-O5 -qcompact'
3219     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3220         _type=ccc
3221         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3222         _DEPFLAGS='-M'
3223         _cflags_speed='-fast'
3224         _cflags_size='-O1'
3225         _flags_filter=ccc_flags
3226     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3227         test -d "$sysroot" || die "No valid sysroot specified."
3228         _type=armcc
3229         _ident=$($_cc --vsn | head -n1)
3230         armcc_conf="$PWD/armcc.conf"
3231         $_cc --arm_linux_configure                 \
3232              --arm_linux_config_file="$armcc_conf" \
3233              --configure_sysroot="$sysroot"        \
3234              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3235              die "Error creating armcc configuration file."
3236         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3237         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3238         as_default="${cross_prefix}gcc"
3239         _depflags='-MMD'
3240         _cflags_speed='-O3'
3241         _cflags_size='-Os'
3242     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3243         _type=tms470
3244         _ident=$($_cc -version | head -n1 | tr -s ' ')
3245         _flags='--gcc --abi=eabi -me'
3246         _cc_e='-ppl -fe=$@'
3247         _cc_o='-fe=$@'
3248         _depflags='-ppa -ppd=$(@:.o=.d)'
3249         _cflags_speed='-O3 -mf=5'
3250         _cflags_size='-O3 -mf=2'
3251         _flags_filter=tms470_flags
3252     elif $_cc -v 2>&1 | grep -q clang; then
3253         _type=clang
3254         _ident=$($_cc --version | head -n1)
3255         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3256         _cflags_speed='-O3'
3257         _cflags_size='-Os'
3258     elif $_cc -V 2>&1 | grep -q Sun; then
3259         _type=suncc
3260         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3261         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3262         _DEPFLAGS='-xM1 -xc99'
3263         _ldflags='-std=c99'
3264         _cflags_speed='-O5'
3265         _cflags_size='-O5 -xspace'
3266         _flags_filter=suncc_flags
3267     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3268         _type=pathscale
3269         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3270         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3271         _cflags_speed='-O2'
3272         _cflags_size='-Os'
3273         _flags_filter='filter_out -Wdisabled-optimization'
3274     elif $_cc -v 2>&1 | grep -q Open64; then
3275         _type=open64
3276         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3278         _cflags_speed='-O2'
3279         _cflags_size='-Os'
3280         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3281     elif $_cc -V 2>&1 | grep -q Portland; then
3282         _type=pgi
3283         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3284         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3285         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3286         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3287         _cflags_noopt="-O"
3288         _flags_filter=pgi_flags
3289     elif $_cc 2>&1 | grep -q Microsoft; then
3290         _type=msvc
3291         _ident=$($cc 2>&1 | head -n1)
3292         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3293         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3294         _cflags_speed="-O2"
3295         _cflags_size="-O1"
3296         if $_cc 2>&1 | grep -q Linker; then
3297             _ld_o='-out:$@'
3298         else
3299             _ld_o='-Fe$@'
3300         fi
3301         _cc_o='-Fo$@'
3302         _cc_e='-P -Fi$@'
3303         _flags_filter=msvc_flags
3304         _ld_lib='lib%.a'
3305         _ld_path='-libpath:'
3306         _flags='-nologo'
3307         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3308         if [ $pfx = hostcc ]; then
3309             append _cflags -Dsnprintf=_snprintf
3310         fi
3311         disable stripping
3312     elif $_cc 2>&1 | grep -q Intel; then
3313         _type=icl
3314         _ident=$($cc 2>&1 | head -n1)
3315         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3316         # Not only is O3 broken on 13.x+ but it is slower on all previous
3317         # versions (tested) as well.
3318         _cflags_speed="-O2"
3319         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3320         if $_cc 2>&1 | grep -q Linker; then
3321             _ld_o='-out:$@'
3322         else
3323             _ld_o='-Fe$@'
3324         fi
3325         _cc_o='-Fo$@'
3326         _cc_e='-P'
3327         _flags_filter=icl_flags
3328         _ld_lib='lib%.a'
3329         _ld_path='-libpath:'
3330         # -Qdiag-error to make icl error when seeing certain unknown arguments
3331         _flags='-nologo -Qdiag-error:4044,10157'
3332         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3333         # with MSVC which enables it by default.
3334         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3335         if [ $pfx = hostcc ]; then
3336             append _cflags -Dsnprintf=_snprintf
3337         fi
3338     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3339         _type=cparser
3340         _ident=$($_cc --version | head -n1)
3341         _depflags='-MMD'
3342         _cflags_speed='-O4'
3343         _cflags_size='-O2'
3344         _flags_filter=cparser_flags
3345     fi
3346
3347     eval ${pfx}_type=\$_type
3348     eval ${pfx}_ident=\$_ident
3349 }
3350
3351 set_ccvars(){
3352     eval ${1}_C=\${_cc_c-\${${1}_C}}
3353     eval ${1}_E=\${_cc_e-\${${1}_E}}
3354     eval ${1}_O=\${_cc_o-\${${1}_O}}
3355
3356     if [ -n "$_depflags" ]; then
3357         eval ${1}_DEPFLAGS=\$_depflags
3358     else
3359         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3360         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3361         eval DEP${1}FLAGS=\$_flags
3362     fi
3363 }
3364
3365 probe_cc cc "$cc"
3366 cflags_filter=$_flags_filter
3367 cflags_speed=$_cflags_speed
3368 cflags_size=$_cflags_size
3369 cflags_noopt=$_cflags_noopt
3370 add_cflags $_flags $_cflags
3371 cc_ldflags=$_ldflags
3372 set_ccvars CC
3373
3374 probe_cc hostcc "$host_cc"
3375 host_cflags_filter=$_flags_filter
3376 add_host_cflags  $_flags $_cflags
3377 set_ccvars HOSTCC
3378
3379 test -n "$cc_type" && enable $cc_type ||
3380     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3381
3382 : ${as_default:=$cc}
3383 : ${dep_cc_default:=$cc}
3384 : ${ld_default:=$cc}
3385 : ${host_ld_default:=$host_cc}
3386 set_default ar as dep_cc ld host_ld windres
3387
3388 probe_cc as "$as"
3389 asflags_filter=$_flags_filter
3390 add_asflags $_flags $_cflags
3391 set_ccvars AS
3392
3393 probe_cc ld "$ld"
3394 ldflags_filter=$_flags_filter
3395 add_ldflags $_flags $_ldflags
3396 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3397 LD_O=${_ld_o-$LD_O}
3398 LD_LIB=${_ld_lib-$LD_LIB}
3399 LD_PATH=${_ld_path-$LD_PATH}
3400
3401 probe_cc hostld "$host_ld"
3402 host_ldflags_filter=$_flags_filter
3403 add_host_ldflags $_flags $_ldflags
3404 HOSTLD_O=${_ld_o-$HOSTLD_O}
3405
3406 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3407     probe_cc depcc "$dep_cc"
3408     CCDEP=${_DEPCMD:-$DEPCMD}
3409     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3410     DEPCCFLAGS=$_flags
3411 fi
3412
3413 if $ar 2>&1 | grep -q Microsoft; then
3414     arflags="-nologo"
3415     ar_o='-out:$@'
3416 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3417     arflags="rq"
3418     ar_o='$@'
3419 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3420     arflags='-Xany -r -c'
3421     ar_o='$@'
3422 else
3423     arflags="rc"
3424     ar_o='$@'
3425 fi
3426
3427 add_cflags $extra_cflags
3428 add_cxxflags $extra_cxxflags
3429 add_asflags $extra_cflags
3430
3431 if test -n "$sysroot"; then
3432     case "$cc_type" in
3433         gcc|llvm_gcc|clang)
3434             add_cppflags --sysroot="$sysroot"
3435             add_ldflags --sysroot="$sysroot"
3436 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3437             add_cppflags -isysroot "$sysroot"
3438             add_ldflags -isysroot "$sysroot"
3439         ;;
3440         tms470)
3441             add_cppflags -I"$sysinclude"
3442             add_ldflags  --sysroot="$sysroot"
3443         ;;
3444     esac
3445 fi
3446
3447 if test "$cpu" = host; then
3448     enabled cross_compile &&
3449         die "--cpu=host makes no sense when cross-compiling."
3450
3451     case "$cc_type" in
3452         gcc|llvm_gcc)
3453             check_native(){
3454                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3455                 sed -n "/cc1.*$1=/{
3456                             s/.*$1=\\([^ ]*\\).*/\\1/
3457                             p
3458                             q
3459                         }" $TMPE
3460             }
3461             cpu=$(check_native -march || check_native -mcpu)
3462         ;;
3463     esac
3464
3465     test "${cpu:-host}" = host &&
3466         die "--cpu=host not supported with compiler $cc"
3467 fi
3468
3469 # Deal with common $arch aliases
3470 case "$arch" in
3471     aarch64|arm64)
3472         arch="aarch64"
3473     ;;
3474     arm*|iPad*|iPhone*)
3475         arch="arm"
3476     ;;
3477     mips*|IP*)
3478         arch="mips"
3479     ;;
3480     parisc*|hppa*)
3481         arch="parisc"
3482     ;;
3483     "Power Macintosh"|ppc*|powerpc*)
3484         arch="ppc"
3485     ;;
3486     s390|s390x)
3487         arch="s390"
3488     ;;
3489     sh4|sh)
3490         arch="sh4"
3491     ;;
3492     sun4u|sparc*)
3493         arch="sparc"
3494     ;;
3495     tilegx|tile-gx)
3496         arch="tilegx"
3497     ;;
3498     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3499         arch="x86"
3500     ;;
3501 esac
3502
3503 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3504 enable $arch
3505
3506 # Add processor-specific flags
3507 if enabled aarch64; then
3508
3509     case $cpu in
3510         armv*)
3511             cpuflags="-march=$cpu"
3512         ;;
3513         *)
3514             cpuflags="-mcpu=$cpu"
3515         ;;
3516     esac
3517
3518 elif enabled alpha; then
3519
3520     cpuflags="-mcpu=$cpu"
3521
3522 elif enabled arm; then
3523
3524     check_arm_arch() {
3525         check_cpp_condition stddef.h \
3526             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3527             $cpuflags
3528     }
3529
3530     probe_arm_arch() {
3531         if   check_arm_arch 4;        then echo armv4;
3532         elif check_arm_arch 4T;       then echo armv4t;
3533         elif check_arm_arch 5;        then echo armv5;
3534         elif check_arm_arch 5E;       then echo armv5e;
3535         elif check_arm_arch 5T;       then echo armv5t;
3536         elif check_arm_arch 5TE;      then echo armv5te;
3537         elif check_arm_arch 5TEJ;     then echo armv5te;
3538         elif check_arm_arch 6;        then echo armv6;
3539         elif check_arm_arch 6J;       then echo armv6j;
3540         elif check_arm_arch 6K;       then echo armv6k;
3541         elif check_arm_arch 6Z;       then echo armv6z;
3542         elif check_arm_arch 6ZK;      then echo armv6zk;
3543         elif check_arm_arch 6T2;      then echo armv6t2;
3544         elif check_arm_arch 7;        then echo armv7;
3545         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3546         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3547         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3548         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3549         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3550         fi
3551     }
3552
3553     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3554
3555     case $cpu in
3556         armv*)
3557             cpuflags="-march=$cpu"
3558             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3559         ;;
3560         *)
3561             cpuflags="-mcpu=$cpu"
3562             case $cpu in
3563                 cortex-a*)                               subarch=armv7a  ;;
3564                 cortex-r*)                               subarch=armv7r  ;;
3565                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3566                 arm11*)                                  subarch=armv6   ;;
3567                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3568                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3569                 *)                             subarch=$(probe_arm_arch) ;;
3570             esac
3571         ;;
3572     esac
3573
3574     case "$subarch" in
3575         armv5t*)    enable fast_clz                ;;
3576         armv[6-8]*) enable fast_clz fast_unaligned ;;
3577     esac
3578
3579 elif enabled avr32; then
3580
3581     case $cpu in
3582         ap7[02]0[0-2])
3583             subarch="avr32_ap"
3584             cpuflags="-mpart=$cpu"
3585         ;;
3586         ap)
3587             subarch="avr32_ap"
3588             cpuflags="-march=$cpu"
3589         ;;
3590         uc3[ab]*)
3591             subarch="avr32_uc"
3592             cpuflags="-mcpu=$cpu"
3593         ;;
3594         uc)
3595             subarch="avr32_uc"
3596             cpuflags="-march=$cpu"
3597         ;;
3598     esac
3599
3600 elif enabled bfin; then
3601
3602     cpuflags="-mcpu=$cpu"
3603
3604 elif enabled mips; then
3605
3606     cpuflags="-march=$cpu"
3607
3608     case $cpu in
3609         24kc)
3610             disable mipsfpu
3611             disable mipsdspr1
3612             disable mipsdspr2
3613         ;;
3614         24kf*)
3615             disable mipsdspr1
3616             disable mipsdspr2
3617         ;;
3618         24kec|34kc|1004kc)
3619             disable mipsfpu
3620             disable mipsdspr2
3621         ;;
3622         24kef*|34kf*|1004kf*)
3623             disable mipsdspr2
3624         ;;
3625         74kc)
3626             disable mipsfpu
3627         ;;
3628     esac
3629
3630 elif enabled ppc; then
3631
3632     disable ldbrx
3633
3634     case $(tolower $cpu) in
3635         601|ppc601|powerpc601)
3636             cpuflags="-mcpu=601"
3637             disable altivec
3638         ;;
3639         603*|ppc603*|powerpc603*)
3640             cpuflags="-mcpu=603"
3641             disable altivec
3642         ;;
3643         604*|ppc604*|powerpc604*)
3644             cpuflags="-mcpu=604"
3645             disable altivec
3646         ;;
3647         g3|75*|ppc75*|powerpc75*)
3648             cpuflags="-mcpu=750"
3649             disable altivec
3650         ;;
3651         g4|745*|ppc745*|powerpc745*)
3652             cpuflags="-mcpu=7450"
3653         ;;
3654         74*|ppc74*|powerpc74*)
3655             cpuflags="-mcpu=7400"
3656         ;;
3657         g5|970|ppc970|powerpc970)
3658             cpuflags="-mcpu=970"
3659         ;;
3660         power[3-7]*)
3661             cpuflags="-mcpu=$cpu"
3662         ;;
3663         cell)
3664             cpuflags="-mcpu=cell"
3665             enable ldbrx
3666         ;;
3667         e500mc)
3668             cpuflags="-mcpu=e500mc"
3669             disable altivec
3670         ;;
3671         e500v2)
3672             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3673             disable altivec
3674             disable dcbzl
3675         ;;
3676         e500)
3677             cpuflags="-mcpu=8540 -mhard-float"
3678             disable altivec
3679             disable dcbzl
3680         ;;
3681     esac
3682
3683 elif enabled sparc; then
3684
3685     case $cpu in
3686         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3687             cpuflags="-mcpu=$cpu"
3688         ;;
3689         ultrasparc*|niagara[234])
3690             cpuflags="-mcpu=$cpu"
3691         ;;
3692     esac
3693
3694 elif enabled x86; then
3695
3696     case $cpu in
3697         i[345]86|pentium)
3698             cpuflags="-march=$cpu"
3699             disable mmx
3700         ;;
3701         # targets that do NOT support nopl and conditional mov (cmov)
3702         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3703             cpuflags="-march=$cpu"
3704             disable i686
3705         ;;
3706         # targets that do support nopl and conditional mov (cmov)
3707         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3708             cpuflags="-march=$cpu"
3709             enable i686
3710             enable fast_cmov
3711         ;;
3712         # targets that do support conditional mov but on which it's slow
3713         pentium4|pentium4m|prescott|nocona)
3714             cpuflags="-march=$cpu"
3715             enable i686
3716             disable fast_cmov
3717         ;;
3718     esac
3719
3720 fi
3721
3722 if [ "$cpu" != generic ]; then
3723     add_cflags  $cpuflags
3724     add_asflags $cpuflags
3725 fi
3726
3727 # compiler sanity check
3728 check_exec <<EOF
3729 int main(void){ return 0; }
3730 EOF
3731 if test "$?" != 0; then
3732     echo "$cc is unable to create an executable file."
3733     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3734         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3735         echo "Only do this if you know what cross compiling means."
3736     fi
3737     die "C compiler test failed."
3738 fi
3739
3740 add_cppflags -D_ISOC99_SOURCE
3741 add_cxxflags -D__STDC_CONSTANT_MACROS
3742 check_cflags -std=c99
3743 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3744 #include <stdlib.h>
3745 EOF
3746 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3747 #include <stdlib.h>
3748 EOF
3749
3750 add_host_cppflags -D_ISOC99_SOURCE
3751 check_host_cflags -std=c99
3752 check_host_cflags -Wall
3753 check_host_cflags -O3
3754
3755 check_64bit(){
3756     arch32=$1
3757     arch64=$2
3758     expr=$3
3759     check_code cc "" "int test[2*($expr) - 1]" &&
3760         subarch=$arch64 || subarch=$arch32
3761 }
3762
3763 case "$arch" in
3764     aarch64|alpha|ia64)
3765         spic=$shared
3766     ;;
3767     mips)
3768         check_64bit mips mips64 '_MIPS_SIM > 1'
3769         spic=$shared
3770     ;;
3771     parisc)
3772         check_64bit parisc parisc64 'sizeof(void *) > 4'
3773         spic=$shared
3774     ;;
3775     ppc)
3776         check_64bit ppc ppc64 'sizeof(void *) > 4'
3777         spic=$shared
3778     ;;
3779     s390)
3780         check_64bit s390 s390x 'sizeof(void *) > 4'
3781         spic=$shared
3782     ;;
3783     sparc)
3784         check_64bit sparc sparc64 'sizeof(void *) > 4'
3785         spic=$shared
3786     ;;
3787     x86)
3788         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3789         if test "$subarch" = "x86_64"; then
3790             spic=$shared
3791         fi
3792     ;;
3793     ppc)
3794         check_cc <<EOF && subarch="ppc64"
3795         int test[(int)sizeof(char*) - 7];
3796 EOF
3797     ;;
3798 esac
3799
3800 enable $subarch
3801 enabled spic && enable_weak pic
3802
3803 # OS specific
3804 case $target_os in
3805     aix)
3806         SHFLAGS=-shared
3807         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3808         enabled shared && add_ldflags -Wl,-brtl
3809         ;;
3810     haiku)
3811         prefix_default="/boot/common"
3812         network_extralibs="-lnetwork"
3813         host_libs=
3814         ;;
3815     sunos)
3816         SHFLAGS='-shared -Wl,-h,$$(@F)'
3817         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3818         network_extralibs="-lsocket -lnsl"
3819         # When using suncc to build, the Solaris linker will mark
3820         # an executable with each instruction set encountered by
3821         # the Solaris assembler.  As our libraries contain their own
3822         # guards for processor-specific code, instead suppress
3823         # generation of the HWCAPS ELF section on Solaris x86 only.
3824         enabled_all suncc x86 &&
3825             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3826             add_ldflags -Wl,-M,mapfile
3827         nm_default='nm -P -g'
3828         ;;
3829     netbsd)
3830         disable symver
3831         oss_indev_extralibs="-lossaudio"
3832         oss_outdev_extralibs="-lossaudio"
3833         enabled gcc || check_ldflags -Wl,-zmuldefs
3834         ;;
3835     openbsd|bitrig)
3836         disable symver
3837         SHFLAGS='-shared'
3838         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3839         SLIB_INSTALL_LINKS=
3840         oss_indev_extralibs="-lossaudio"
3841         oss_outdev_extralibs="-lossaudio"
3842         ;;
3843     dragonfly)
3844         disable symver
3845         ;;
3846     freebsd)
3847         ;;
3848     bsd/os)
3849         add_extralibs -lpoll -lgnugetopt
3850         strip="strip -d"
3851         ;;
3852     darwin)
3853         gas="gas-preprocessor.pl $cc"
3854         enabled ppc && add_asflags -force_cpusubtype_ALL
3855         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3856         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3857         strip="${strip} -x"
3858         add_ldflags -Wl,-dynamic,-search_paths_first
3859         SLIBSUF=".dylib"
3860         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3861         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3862         objformat="macho"
3863         enabled x86_64 && objformat="macho64"
3864         enabled_any pic shared ||
3865             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3866         ;;
3867     mingw32*)
3868         if test $target_os = "mingw32ce"; then
3869             disable network
3870         else
3871             target_os=mingw32
3872         fi
3873         LIBTARGET=i386
3874         if enabled x86_64; then
3875             LIBTARGET="i386:x86-64"
3876         elif enabled arm; then
3877             LIBTARGET=arm-wince
3878         fi
3879         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3880         check_ldflags -Wl,--nxcompat
3881         check_ldflags -Wl,--dynamicbase
3882         shlibdir_default="$bindir_default"
3883         SLIBPREF=""
3884         SLIBSUF=".dll"
3885         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3886         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3887         dlltool="${cross_prefix}dlltool"
3888         if check_cmd lib.exe -list; then
3889             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3890             if enabled x86_64; then
3891                 LIBTARGET=x64
3892             fi
3893         elif check_cmd $dlltool --version; then
3894             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3895         fi
3896         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3897         SLIB_INSTALL_LINKS=
3898         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3899         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3900         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3901         objformat="win32"
3902         ranlib=:
3903         enable dos_paths
3904         ;;
3905     win32|win64)
3906         disable symver
3907         if enabled shared; then
3908             # Link to the import library instead of the normal static library
3909             # for shared libs.
3910             LD_LIB='%.lib'
3911             # Cannot build both shared and static libs with MSVC or icl.
3912             disable static
3913         fi
3914         shlibdir_default="$bindir_default"
3915         SLIBPREF=""
3916         SLIBSUF=".dll"
3917         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3918         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3919         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3920         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3921         SLIB_INSTALL_LINKS=
3922         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3923         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3924         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3925         objformat="win32"
3926         ranlib=:
3927         enable dos_paths
3928         ;;
3929     cygwin*)
3930         target_os=cygwin
3931         shlibdir_default="$bindir_default"
3932         SLIBPREF="cyg"
3933         SLIBSUF=".dll"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3936         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3937         SLIB_INSTALL_LINKS=
3938         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3939         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3940         objformat="win32"
3941         enable dos_paths
3942         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3943         ;;
3944     *-dos|freedos|opendos)
3945         network_extralibs="-lsocket"
3946         objformat="coff"
3947         enable dos_paths
3948         add_cppflags -U__STRICT_ANSI__
3949         ;;
3950     linux)
3951         enable dv1394
3952         ;;
3953     irix*)
3954         target_os=irix
3955         ranlib="echo ignoring ranlib"
3956         ;;
3957     os/2*)
3958         strip="lxlite -CS"
3959         ln_s="cp -f"
3960         objformat="aout"
3961         add_cppflags -D_GNU_SOURCE
3962         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3963         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3964         LIBSUF="_s.a"
3965         SLIBPREF=""
3966         SLIBSUF=".dll"
3967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3969         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3970             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3971             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3972             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3973             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3974             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3975         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3976             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3977         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3978         enable dos_paths
3979         enable_weak os2threads
3980         ;;
3981     gnu/kfreebsd)
3982         add_cppflags -D_BSD_SOURCE
3983         ;;
3984     gnu)
3985         ;;
3986     qnx)
3987         add_cppflags -D_QNX_SOURCE
3988         network_extralibs="-lsocket"
3989         ;;
3990     symbian)
3991         SLIBSUF=".dll"
3992         enable dos_paths
3993         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3994         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3995         add_ldflags -Wl,--target1-abs,--no-undefined \
3996                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3997                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3998         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3999                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4000                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4001         ;;
4002     osf1)
4003         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4004         ;;
4005     minix)
4006         ;;
4007     plan9)
4008         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4009                      -D_REENTRANT_SOURCE        \
4010                      -D_RESEARCH_SOURCE         \
4011                      -DFD_SETSIZE=96            \
4012                      -DHAVE_SOCK_OPTS
4013         add_compat strtod.o strtod=avpriv_strtod
4014         network_extralibs='-lbsd'
4015         exeobjs=compat/plan9/main.o
4016         disable ffserver
4017         cp_f='cp'
4018         ;;
4019     none)
4020         ;;
4021     *)
4022         die "Unknown OS '$target_os'."
4023         ;;
4024 esac
4025
4026 # determine libc flavour
4027
4028 probe_libc(){
4029     pfx=$1
4030     pfx_no_=${pfx%_}
4031     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4032     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4033         eval ${pfx}libc_type=uclibc
4034         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4035     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4036         eval ${pfx}libc_type=glibc
4037         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4038     # MinGW headers can be installed on Cygwin, so check for newlib first.
4039     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4040         eval ${pfx}libc_type=newlib
4041         add_${pfx}cppflags -U__STRICT_ANSI__
4042     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4043     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4044         eval ${pfx}libc_type=mingw64
4045         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4046             add_compat msvcrt/snprintf.o
4047             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4048         fi
4049         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4050         eval test \$${pfx_no_}cc_type = "gcc" &&
4051             add_${pfx}cppflags -D__printf__=__gnu_printf__
4052     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4053          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4054         eval ${pfx}libc_type=mingw32
4055         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4056             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4057             die "ERROR: MinGW32 runtime version must be >= 3.15."
4058         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4059         eval test \$${pfx_no_}cc_type = "gcc" &&
4060             add_${pfx}cppflags -D__printf__=__gnu_printf__
4061     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4062         eval ${pfx}libc_type=msvcrt
4063         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4064         # 0x601 by default unless something else is set by the user.
4065         # This can easily lead to us detecting functions only present
4066         # in such new versions and producing binaries requiring windows 7.0.
4067         # Therefore explicitly set the default to XP unless the user has
4068         # set something else on the command line.
4069         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4070             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4071     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4072         eval ${pfx}libc_type=klibc
4073     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4074         eval ${pfx}libc_type=bionic
4075     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4076         eval ${pfx}libc_type=solaris
4077         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4078     fi
4079 }
4080
4081 probe_libc
4082 test -n "$libc_type" && enable libc_$libc_type
4083 probe_libc host_
4084 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4085
4086 case $libc_type in
4087     bionic)
4088         add_compat strtod.o strtod=avpriv_strtod
4089         ;;
4090     msvcrt)
4091         add_compat strtod.o strtod=avpriv_strtod
4092         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4093                                      _snprintf=avpriv_snprintf  \
4094                                      vsnprintf=avpriv_vsnprintf
4095         ;;
4096 esac
4097
4098 # hacks for compiler/libc/os combinations
4099
4100 if enabled_all tms470 libc_glibc; then
4101     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4102     add_cppflags -D__USER_LABEL_PREFIX__=
4103     add_cppflags -D__builtin_memset=memset
4104     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4105     add_cflags   -pds=48    # incompatible redefinition of macro
4106 fi
4107
4108 if enabled_all ccc libc_glibc; then
4109     add_ldflags -Wl,-z,now  # calls to libots crash without this
4110 fi
4111
4112 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4113     add_cppflags '-I\$(SRC_PATH)/compat/float'
4114
4115 esc(){
4116     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4117 }
4118
4119 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4120
4121 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4122
4123 set_default $PATHS_LIST
4124 set_default nm
4125
4126 # we need to build at least one lib type
4127 if ! enabled_any static shared; then
4128     cat <<EOF
4129 At least one library type must be built.
4130 Specify --enable-static to build the static libraries or --enable-shared to
4131 build the shared libraries as well. To only build the shared libraries specify
4132 --disable-static in addition to --enable-shared.
4133 EOF
4134     exit 1;
4135 fi
4136
4137 # backward compatibility layer for incompatible_libav/fork_abi
4138 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4139 enabled incompatible_libav_abi && enable incompatible_fork_abi
4140
4141 die_license_disabled() {
4142     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4143 }
4144
4145 die_license_disabled_gpl() {
4146     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4147 }
4148
4149 die_license_disabled gpl frei0r
4150 die_license_disabled gpl libcdio
4151 die_license_disabled gpl libutvideo
4152 die_license_disabled gpl libvidstab
4153 die_license_disabled gpl libx264
4154 die_license_disabled gpl libx265
4155 die_license_disabled gpl libxavs
4156 die_license_disabled gpl libxvid
4157 die_license_disabled gpl libzvbi
4158 die_license_disabled gpl x11grab
4159
4160 die_license_disabled nonfree libaacplus
4161 die_license_disabled nonfree libfaac
4162 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4163 enabled gpl && die_license_disabled_gpl nonfree openssl
4164
4165 die_license_disabled version3 libopencore_amrnb
4166 die_license_disabled version3 libopencore_amrwb
4167 die_license_disabled version3 libvo_aacenc
4168 die_license_disabled version3 libvo_amrwbenc
4169
4170 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4171
4172 disabled optimizations || check_cflags -fomit-frame-pointer
4173
4174 enable_weak_pic() {
4175     disabled pic && return
4176     enable pic
4177     add_cppflags -DPIC
4178     case "$target_os" in
4179     mingw*|cygwin*)
4180         ;;
4181     *)
4182         add_cflags -fPIC
4183         ;;
4184     esac
4185     add_asflags  -fPIC
4186 }
4187
4188 enabled pic && enable_weak_pic
4189
4190 check_cc <<EOF || die "Symbol mangling check failed."
4191 int ff_extern;
4192 EOF
4193 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4194 extern_prefix=${sym%%ff_extern*}
4195
4196 check_cc <<EOF && enable_weak inline_asm
4197 void foo(void) { __asm__ volatile ("" ::); }
4198 EOF
4199
4200 _restrict=
4201 for restrict_keyword in restrict __restrict__ __restrict; do
4202     check_cc <<EOF && _restrict=$restrict_keyword && break
4203 void foo(char * $restrict_keyword p);
4204 EOF
4205 done
4206
4207 check_cc <<EOF && enable pragma_deprecated
4208 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4209 EOF
4210
4211 check_cc <<EOF && enable attribute_packed
4212 struct { int x; } __attribute__((packed)) x;
4213 EOF
4214
4215 check_cc <<EOF && enable attribute_may_alias
4216 union { int x; } __attribute__((may_alias)) x;
4217 EOF
4218
4219 check_cc <<EOF || die "endian test failed"
4220 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4221 EOF
4222 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4223
4224 check_inline_asm inline_asm_labels '"1:\n"'
4225
4226 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4227
4228 if enabled aarch64; then
4229     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4230     # internal assembler in clang 3.3 does not support this instruction
4231     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4232     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4233
4234     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4235
4236 elif enabled alpha; then
4237
4238     check_cflags -mieee
4239
4240 elif enabled arm; then
4241
4242     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4243 float func(float a, float b){ return a+b; }
4244 EOF
4245
4246     enabled thumb && check_cflags -mthumb || check_cflags -marm
4247     nogas=die
4248
4249     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4250         enable vfp_args
4251     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4252         case "${cross_prefix:-$cc}" in
4253             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4254             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4255 __asm__ (".eabi_attribute 28, 1");
4256 int main(void) { return 0; }
4257 EOF
4258         esac
4259         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4260     fi
4261
4262     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4263     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4264     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4265     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4266     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4267     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4268
4269     [ $target_os = linux ] ||
4270         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4271             $ARCH_EXT_LIST_ARM
4272
4273     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4274
4275     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4276
4277 elif enabled mips; then
4278
4279     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4280     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4281      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4282     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4283      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4284     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4285      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4286     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4287      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4288
4289 elif enabled parisc; then
4290
4291     if enabled gcc; then
4292         case $($cc -dumpversion) in
4293             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4294         esac
4295     fi
4296
4297 elif enabled ppc; then
4298
4299     enable local_aligned_8 local_aligned_16
4300
4301     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4302     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4303     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4304     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4305
4306     # AltiVec flags: The FSF version of GCC differs from the Apple version
4307     if enabled altivec; then
4308         if ! enabled_any pic ppc64; then
4309             nogas=warn
4310         fi
4311         check_cflags -maltivec -mabi=altivec &&
4312         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4313         check_cflags -faltivec
4314
4315         # check if our compiler supports Motorola AltiVec C API
4316         check_cc <<EOF || disable altivec
4317 $inc_altivec_h
4318 int main(void) {
4319     vector signed int v1 = (vector signed int) { 0 };
4320     vector signed int v2 = (vector signed int) { 1 };
4321     v1 = vec_add(v1, v2);
4322     return 0;
4323 }
4324 EOF
4325
4326         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4327     fi
4328
4329 elif enabled x86; then
4330
4331     check_builtin rdtsc    intrin.h   "__rdtsc()"
4332     check_builtin mm_empty mmintrin.h "_mm_empty()"
4333
4334     enable local_aligned_8 local_aligned_16
4335
4336     # check whether EBP is available on x86
4337     # As 'i' is stored on the stack, this program will crash
4338     # if the base pointer is used to access it because the
4339     # base pointer is cleared in the inline assembly code.
4340     check_exec_crash <<EOF && enable ebp_available
4341 volatile int i=0;
4342 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4343 return i;
4344 EOF
4345
4346     # check whether EBX is available on x86
4347     check_inline_asm ebx_available '""::"b"(0)' &&
4348         check_inline_asm ebx_available '"":::"%ebx"'
4349
4350     # check whether xmm clobbers are supported
4351     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4352
4353     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4354         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4355
4356     # check whether binutils is new enough to compile SSSE3/MMXEXT
4357     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4358     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4359
4360     if ! disabled_any asm mmx yasm; then
4361         if check_cmd $yasmexe --version; then
4362             enabled x86_64 && yasm_extra="-m amd64"
4363             yasm_debug="-g dwarf2"
4364         elif check_cmd nasm -v; then
4365             yasmexe=nasm
4366             yasm_debug="-g -F dwarf"
4367             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4368         fi
4369
4370         YASMFLAGS="-f $objformat $yasm_extra"
4371         enabled pic               && append YASMFLAGS "-DPIC"
4372         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4373         case "$objformat" in
4374             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4375         esac
4376
4377         check_yasm "movbe ecx, [5]" && enable yasm ||
4378             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4379         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4380         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4381         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4382         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4383         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4384         check_yasm "CPU amdnop" || disable cpunop
4385     fi
4386
4387     case "$cpu" in
4388         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4389             disable fast_clz
4390         ;;
4391     esac
4392
4393 fi
4394
4395 if enabled asm; then
4396     as=${gas:=$as}
4397     check_as <<EOF && enable gnu_as || \
4398         $nogas "GNU assembler not found, install gas-preprocessor"
4399 .macro m n
4400 \n: .int 0
4401 .endm
4402 m x
4403 EOF
4404 fi
4405
4406 check_ldflags -Wl,--as-needed
4407
4408 if check_func dlopen; then
4409     ldl=
4410 elif check_func dlopen -ldl; then
4411     ldl=-ldl
4412 fi
4413
4414 if ! disabled network; then
4415     check_func getaddrinfo $network_extralibs
4416     check_func getservbyport $network_extralibs
4417     check_func inet_aton $network_extralibs
4418
4419     check_type netdb.h "struct addrinfo"
4420     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4421     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4422     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4423     check_type poll.h "struct pollfd"
4424     check_type netinet/sctp.h "struct sctp_event_subscribe"
4425     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4426     check_type netinet/in.h "struct sockaddr_in6"
4427     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4428     check_type "sys/types.h sys/socket.h" socklen_t
4429
4430     # Prefer arpa/inet.h over winsock2
4431     if check_header arpa/inet.h ; then
4432         check_func closesocket
4433     elif check_header winsock2.h ; then
4434         check_func_headers winsock2.h closesocket -lws2 &&
4435             network_extralibs="-lws2" ||
4436         { check_func_headers winsock2.h closesocket -lws2_32 &&
4437             network_extralibs="-lws2_32"; } || disable winsock2_h network
4438         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4439
4440         check_type ws2tcpip.h socklen_t
4441         check_type ws2tcpip.h "struct addrinfo"
4442         check_type ws2tcpip.h "struct group_source_req"
4443         check_type ws2tcpip.h "struct ip_mreq_source"
4444         check_type ws2tcpip.h "struct ipv6_mreq"
4445         check_type winsock2.h "struct pollfd"
4446         check_struct winsock2.h "struct sockaddr" sa_len
4447         check_type ws2tcpip.h "struct sockaddr_in6"
4448         check_type ws2tcpip.h "struct sockaddr_storage"
4449     else
4450         disable network
4451     fi
4452 fi
4453
4454 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4455 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4456 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4457 check_builtin sarestart signal.h "SA_RESTART"
4458 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4459
4460 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4461 check_func  ${malloc_prefix}memalign            && enable memalign
4462 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4463
4464 check_func  access
4465 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4466 check_func  fcntl
4467 check_func  fork
4468 check_func  gethrtime
4469 check_func  getopt
4470 check_func  getrusage
4471 check_func  gettimeofday
4472 check_func  isatty
4473 check_func  localtime_r
4474 check_func  mach_absolute_time
4475 check_func  mkstemp
4476 check_func  mmap
4477 check_func  mprotect
4478 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4479 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4480 check_func  sched_getaffinity
4481 check_func  setrlimit
4482 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4483 check_func  strerror_r
4484 check_func  sysconf
4485 check_func  sysctl
4486 check_func  usleep
4487
4488 check_func_headers conio.h kbhit
4489 check_func_headers io.h setmode
4490 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4491 check_func_headers stdlib.h getenv
4492
4493 check_func_headers windows.h GetProcessAffinityMask
4494 check_func_headers windows.h GetProcessTimes
4495 check_func_headers windows.h GetSystemTimeAsFileTime
4496 check_func_headers windows.h MapViewOfFile
4497 check_func_headers windows.h PeekNamedPipe
4498 check_func_headers windows.h SetConsoleTextAttribute
4499 check_func_headers windows.h Sleep
4500 check_func_headers windows.h VirtualAlloc
4501 check_func_headers glob.h glob
4502 enabled xlib &&
4503     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4504
4505 check_header cl/cl.h
4506 check_header direct.h
4507 check_header dlfcn.h
4508 check_header dxva.h
4509 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4510 check_header io.h
4511 check_header libcrystalhd/libcrystalhd_if.h
4512 check_header mach/mach_time.h
4513 check_header malloc.h
4514 check_header poll.h
4515 check_header sys/mman.h
4516 check_header sys/param.h
4517 check_header sys/resource.h
4518 check_header sys/select.h
4519 check_header sys/time.h
4520 check_header sys/un.h
4521 check_header termios.h
4522 check_header unistd.h
4523 check_header vdpau/vdpau.h
4524 check_header vdpau/vdpau_x11.h
4525 check_header VideoDecodeAcceleration/VDADecoder.h
4526 check_header windows.h
4527 check_header X11/extensions/XvMClib.h
4528 check_header asm/types.h
4529
4530 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4531 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4532 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4533
4534 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4535
4536 if ! disabled w32threads && ! enabled pthreads; then
4537     check_func_headers "windows.h process.h" _beginthreadex &&
4538         enable w32threads || disable w32threads
4539 fi
4540
4541 # check for some common methods of building with pthread support
4542 # do this before the optional library checks as some of them require pthreads
4543 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4544     enable pthreads
4545     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4546         add_cflags -pthread
4547         add_extralibs -pthread
4548     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4549         add_cflags -pthreads
4550         add_extralibs -pthreads
4551     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4552         add_extralibs -lpthreadGC2
4553     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4554         :
4555     elif ! check_func pthread_join && ! check_func pthread_create; then
4556         disable pthreads
4557     fi
4558     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4559 fi
4560
4561
4562 if enabled pthreads; then
4563   check_func pthread_cancel
4564 fi
4565
4566 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4567 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4568
4569 check_lib math.h sin -lm && LIBM="-lm"
4570 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4571
4572 atan2f_args=2
4573 ldexpf_args=2
4574 powf_args=2
4575
4576 for func in $MATH_FUNCS; do
4577     eval check_mathfunc $func \${${func}_args:-1}
4578 done
4579
4580 # these are off by default, so fail if requested and not available
4581 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4582                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4583                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4584 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4585 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4586 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4587 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4588 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4589 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4590 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4591 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4592 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4593 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4594                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4595                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4596 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4597 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4598 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4599 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"
4600 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4601 enabled libfreetype       && require_libfreetype
4602 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4603 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4604                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4605                                done || die "ERROR: libgsm not found"; }
4606 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4607 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4608 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4609 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4610 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4611 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4612 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4613 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4614                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4615                                die "ERROR: libopenjpeg not found"; }
4616 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4617 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4618 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4619 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4620 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4621 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4622 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4623 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4624 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4625 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4626     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4627     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4628 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4629 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4630                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4631                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4632 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4633 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4634 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4635 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4636 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4637 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4638 enabled libvpx            && {
4639     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4640                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4641     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 ||
4642                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4643     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4644     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; } }
4645 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4646 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4647 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4648                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4649                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4650 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4651                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4652                                die "ERROR: libx265 version must be >= 13."; }
4653 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4654 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4655 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4656 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4657 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4658                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4659                                die "ERROR: openal not found"; } &&
4660                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4661                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4662 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4663                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4664                                die "ERROR: opencl not found"; } &&
4665                              { ! enabled_any w32threads os2threads ||
4666                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4667                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4668                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4669                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4670 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4671                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4672                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4673                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4674                                die "ERROR: opengl not found."
4675                              }
4676 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4677                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4678                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4679                                die "ERROR: openssl not found"; }
4680 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4681
4682 if enabled gnutls; then
4683     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4684     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4685 fi
4686
4687 # libdc1394 check
4688 if enabled libdc1394; then
4689     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4690         enable libdc1394_2; } ||
4691     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4692         enable libdc1394_1; } ||
4693     die "ERROR: No version of libdc1394 found "
4694 fi
4695
4696 SDL_CONFIG="${cross_prefix}sdl-config"
4697 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4698     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4699     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4700     enable sdl
4701 else
4702   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4703     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4704     sdl_libs=$("${SDL_CONFIG}" --libs)
4705     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4706     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4707     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4708     enable sdl
4709   fi
4710 fi
4711 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4712
4713 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4714 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4715 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4716 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4717 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4718
4719 check_header linux/fb.h
4720 check_header linux/videodev.h
4721 check_header linux/videodev2.h
4722 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4723
4724 check_header sys/videoio.h
4725
4726 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4727 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4728 # w32api 3.12 had it defined wrong
4729 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4730
4731 check_type "dshow.h" IBaseFilter
4732
4733 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4734 { check_header dev/bktr/ioctl_meteor.h &&
4735   check_header dev/bktr/ioctl_bt848.h; } ||
4736 { check_header machine/ioctl_meteor.h &&
4737   check_header machine/ioctl_bt848.h; } ||
4738 { check_header dev/video/meteor/ioctl_meteor.h &&
4739   check_header dev/video/bktr/ioctl_bt848.h; } ||
4740 check_header dev/ic/bt8xx.h
4741
4742 check_header sndio.h
4743 if check_struct sys/soundcard.h audio_buf_info bytes; then
4744     enable_safe sys/soundcard.h
4745 else
4746     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4747     #include <sys/soundcard.h>
4748     audio_buf_info abc;
4749 EOF
4750 fi
4751 check_header soundcard.h
4752
4753 enabled_any alsa_indev alsa_outdev &&
4754     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4755
4756 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4757     check_func jack_port_get_latency_range -ljack
4758
4759 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4760
4761 if enabled libcdio; then
4762     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4763     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4764     die "ERROR: libcdio-paranoia not found"
4765 fi
4766
4767 enabled xlib &&
4768     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4769
4770 enabled x11grab                                           &&
4771 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4772 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4773 { enabled xlib || die "ERROR: Xlib not found"; }
4774
4775 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4776
4777 enabled vaapi &&
4778     check_lib va/va.h vaInitialize -lva ||
4779     disable vaapi
4780
4781 enabled vdpau &&
4782     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4783     disable vdpau
4784
4785 enabled vdpau && enabled xlib &&
4786     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4787     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4788     enable vdpau_x11
4789
4790 # Funny iconv installations are not unusual, so check it after all flags have been set
4791 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4792
4793 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4794
4795 # add some useful compiler flags if supported
4796 check_cflags -Wdeclaration-after-statement
4797 check_cflags -Wall
4798 check_cflags -Wdisabled-optimization
4799 check_cflags -Wpointer-arith
4800 check_cflags -Wredundant-decls
4801 check_cflags -Wwrite-strings
4802 check_cflags -Wtype-limits
4803 check_cflags -Wundef
4804 check_cflags -Wmissing-prototypes
4805 check_cflags -Wno-pointer-to-int-cast
4806 check_cflags -Wstrict-prototypes
4807 check_cflags -Wempty-body
4808 enabled extra_warnings && check_cflags -Winline
4809
4810 check_disable_warning(){
4811     warning_flag=-W${1#-Wno-}
4812     test_cflags $warning_flag && add_cflags $1
4813 }
4814
4815 check_disable_warning -Wno-parentheses
4816 check_disable_warning -Wno-switch
4817 check_disable_warning -Wno-format-zero-length
4818 check_disable_warning -Wno-pointer-sign
4819
4820 # add some linker flags
4821 check_ldflags -Wl,--warn-common
4822 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4823 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4824 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4825
4826 # add some strip flags
4827 # -wN '..@*' is more selective than -x, but not available everywhere.
4828 check_stripflags -wN \'..@*\' || check_stripflags -x
4829
4830 enabled neon_clobber_test &&
4831     check_ldflags -Wl,--wrap,avcodec_open2              \
4832                   -Wl,--wrap,avcodec_decode_audio4      \
4833                   -Wl,--wrap,avcodec_decode_video2      \
4834                   -Wl,--wrap,avcodec_decode_subtitle2   \
4835                   -Wl,--wrap,avcodec_encode_audio2      \
4836                   -Wl,--wrap,avcodec_encode_video2      \
4837                   -Wl,--wrap,avcodec_encode_subtitle    \
4838                   -Wl,--wrap,swr_convert                \
4839                   -Wl,--wrap,avresample_convert ||
4840     disable neon_clobber_test
4841
4842 enabled xmm_clobber_test &&
4843     check_ldflags -Wl,--wrap,avcodec_open2              \
4844                   -Wl,--wrap,avcodec_decode_audio4      \
4845                   -Wl,--wrap,avcodec_decode_video2      \
4846                   -Wl,--wrap,avcodec_decode_subtitle2   \
4847                   -Wl,--wrap,avcodec_encode_audio2      \
4848                   -Wl,--wrap,avcodec_encode_video       \
4849                   -Wl,--wrap,avcodec_encode_video2      \
4850                   -Wl,--wrap,avcodec_encode_subtitle    \
4851                   -Wl,--wrap,swr_convert                \
4852                   -Wl,--wrap,avresample_convert         \
4853                   -Wl,--wrap,sws_scale ||
4854     disable xmm_clobber_test
4855
4856 echo "X{};" > $TMPV
4857 if test_ldflags -Wl,--version-script,$TMPV; then
4858     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4859     check_cc <<EOF && enable symver_asm_label
4860 void ff_foo(void) __asm__ ("av_foo@VERSION");
4861 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4862 EOF
4863     check_cc <<EOF && enable symver_gnu_asm
4864 __asm__(".symver ff_foo,av_foo@VERSION");
4865 void ff_foo(void) {}
4866 EOF
4867 fi
4868
4869 if [ -z "$optflags" ]; then
4870     if enabled small; then
4871         optflags=$cflags_size
4872     elif enabled optimizations; then
4873         optflags=$cflags_speed
4874     else
4875         optflags=$cflags_noopt
4876     fi
4877 fi
4878
4879 check_optflags(){
4880     check_cflags "$@"
4881     enabled lto && check_ldflags "$@"
4882 }
4883
4884
4885 if enabled lto; then
4886     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4887     check_cflags  -flto
4888     check_ldflags -flto $cpuflags
4889 fi
4890
4891 check_optflags $optflags
4892 check_optflags -fno-math-errno
4893 check_optflags -fno-signed-zeros
4894
4895 enabled ftrapv && check_cflags -ftrapv
4896
4897 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4898 int x;
4899 EOF
4900
4901
4902 if enabled icc; then
4903     # Just warnings, no remarks
4904     check_cflags -w1
4905     # -wd: Disable following warnings
4906     # 144, 167, 556: -Wno-pointer-sign
4907     # 188: enumerated type mixed with another type
4908     # 1292: attribute "foo" ignored
4909     # 1419: external declaration in primary source file
4910     # 10006: ignoring unknown option -fno-signed-zeros
4911     # 10148: ignoring unknown option -Wno-parentheses
4912     # 10156: ignoring option '-W'; no argument required
4913     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4914     # 11030: Warning unknown option --as-needed
4915     # 10156: ignoring option '-export'; no argument required
4916     check_ldflags -wd10156,11030
4917     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4918     enable ebp_available
4919     if enabled x86_32; then
4920         icc_version=$($cc -dumpversion)
4921         test ${icc_version%%.*} -ge 11 &&
4922             check_cflags -falign-stack=maintain-16-byte ||
4923             disable aligned_stack
4924     fi
4925 elif enabled ccc; then
4926     # disable some annoying warnings
4927     add_cflags -msg_disable bitnotint
4928     add_cflags -msg_disable mixfuncvoid
4929     add_cflags -msg_disable nonstandcast
4930     add_cflags -msg_disable unsupieee
4931 elif enabled gcc; then
4932     check_optflags -fno-tree-vectorize
4933     check_cflags -Werror=implicit-function-declaration
4934     check_cflags -Werror=missing-prototypes
4935     check_cflags -Werror=return-type
4936     check_cflags -Werror=vla
4937     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4938 elif enabled llvm_gcc; then
4939     check_cflags -mllvm -stack-alignment=16
4940 elif enabled clang; then
4941     check_cflags -mllvm -stack-alignment=16
4942     check_cflags -Qunused-arguments
4943     check_cflags -Werror=implicit-function-declaration
4944     check_cflags -Werror=missing-prototypes
4945     check_cflags -Werror=return-type
4946 elif enabled cparser; then
4947     add_cflags -Wno-missing-variable-declarations
4948     add_cflags -Wno-empty-statement
4949 elif enabled armcc; then
4950     # 2523: use of inline assembler is deprecated
4951     add_cflags -W${armcc_opt},--diag_suppress=2523
4952     add_cflags -W${armcc_opt},--diag_suppress=1207
4953     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4954     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4955     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4956     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4957 elif enabled tms470; then
4958     add_cflags -pds=824 -pds=837
4959     disable inline_asm
4960 elif enabled pathscale; then
4961     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4962 elif enabled_any msvc icl; then
4963     enabled x86_32 && disable aligned_stack
4964     enabled_all x86_32 debug && add_cflags -Oy-
4965     enabled debug && add_ldflags -debug
4966     enable pragma_deprecated
4967     if enabled icl; then
4968         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4969         # (correctly) on icl 13.x.
4970         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4971             add_cflags -Qansi-alias
4972         # icl will pass the inline asm tests but inline asm is currently
4973         # not supported (build will fail)
4974         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4975         disable inline_asm
4976     fi
4977 fi
4978
4979 case $as_type in
4980     clang)
4981         add_asflags -Qunused-arguments
4982     ;;
4983 esac
4984
4985 case $ld_type in
4986     clang)
4987         check_ldflags -Qunused-arguments
4988     ;;
4989 esac
4990
4991 case $target_os in
4992     osf1)
4993         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4994     ;;
4995     plan9)
4996         add_cppflags -Dmain=plan9_main
4997     ;;
4998 esac
4999
5000 enable frame_thread_encoder
5001
5002 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5003
5004 check_deps $CONFIG_LIST       \
5005            $CONFIG_EXTRA      \
5006            $HAVE_LIST         \
5007            $ALL_COMPONENTS    \
5008
5009 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"
5010
5011
5012 if test $target_os = "haiku"; then
5013     disable memalign
5014     disable posix_memalign
5015 fi
5016
5017 ! enabled_any memalign posix_memalign aligned_malloc &&
5018     enabled_any $need_memalign && enable memalign_hack
5019
5020 # add_dep lib dep
5021 # -> enable ${lib}_deps_${dep}
5022 # -> add $dep to ${lib}_deps only once
5023 add_dep() {
5024     lib=$1
5025     dep=$2
5026     enabled "${lib}_deps_${dep}" && return 0
5027     enable  "${lib}_deps_${dep}"
5028     prepend "${lib}_deps" $dep
5029 }
5030
5031 # merge deps lib components
5032 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5033 merge_deps() {
5034     lib=$1
5035     shift
5036     for comp in $*; do
5037         enabled $comp || continue
5038         eval "dep=\"\$${comp}_deps\""
5039         for d in $dep; do
5040             add_dep $lib $d
5041         done
5042     done
5043 }
5044
5045 merge_deps libavfilter $FILTER_LIST
5046
5047 for thread in $THREADS_LIST; do
5048     if enabled $thread; then
5049         test -n "$thread_type" &&
5050             die "ERROR: Only one thread type must be selected." ||
5051             thread_type="$thread"
5052     fi
5053 done
5054
5055 echo "install prefix            $prefix"
5056 echo "source path               $source_path"
5057 echo "C compiler                $cc"
5058 echo "C library                 $libc_type"
5059 if test "$host_cc" != "$cc"; then
5060     echo "host C compiler           $host_cc"
5061     echo "host C library            $host_libc_type"
5062 fi
5063 echo "ARCH                      $arch ($cpu)"
5064 if test "$build_suffix" != ""; then
5065     echo "build suffix              $build_suffix"
5066 fi
5067 if test "$progs_suffix" != ""; then
5068     echo "progs suffix              $progs_suffix"
5069 fi
5070 if test "$extra_version" != ""; then
5071     echo "version string suffix     $extra_version"
5072 fi
5073 echo "big-endian                ${bigendian-no}"
5074 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5075 if enabled x86; then
5076     echo "${yasmexe}                      ${yasm-no}"
5077     echo "MMX enabled               ${mmx-no}"
5078     echo "MMXEXT enabled            ${mmxext-no}"
5079     echo "3DNow! enabled            ${amd3dnow-no}"
5080     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5081     echo "SSE enabled               ${sse-no}"
5082     echo "SSSE3 enabled             ${ssse3-no}"
5083     echo "AVX enabled               ${avx-no}"
5084     echo "XOP enabled               ${xop-no}"
5085     echo "FMA3 enabled              ${fma3-no}"
5086     echo "FMA4 enabled              ${fma4-no}"
5087     echo "i686 features enabled     ${i686-no}"
5088     echo "CMOV is fast              ${fast_cmov-no}"
5089     echo "EBX available             ${ebx_available-no}"
5090     echo "EBP available             ${ebp_available-no}"
5091 fi
5092 if enabled aarch64; then
5093     echo "NEON enabled              ${neon-no}"
5094     echo "VFP enabled               ${vfp-no}"
5095 fi
5096 if enabled arm; then
5097     echo "ARMv5TE enabled           ${armv5te-no}"
5098     echo "ARMv6 enabled             ${armv6-no}"
5099     echo "ARMv6T2 enabled           ${armv6t2-no}"
5100     echo "VFP enabled               ${vfp-no}"
5101     echo "NEON enabled              ${neon-no}"
5102     echo "THUMB enabled             ${thumb-no}"
5103 fi
5104 if enabled mips; then
5105     echo "MIPS FPU enabled          ${mipsfpu-no}"
5106     echo "MIPS32R2 enabled          ${mips32r2-no}"
5107     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5108     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5109 fi
5110 if enabled ppc; then
5111     echo "AltiVec enabled           ${altivec-no}"
5112     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5113     echo "dcbzl available           ${dcbzl-no}"
5114 fi
5115 echo "debug symbols             ${debug-no}"
5116 echo "strip symbols             ${stripping-no}"
5117 echo "optimize for size         ${small-no}"
5118 echo "optimizations             ${optimizations-no}"
5119 echo "static                    ${static-no}"
5120 echo "shared                    ${shared-no}"
5121 echo "postprocessing support    ${postproc-no}"
5122 echo "new filter support        ${avfilter-no}"
5123 echo "network support           ${network-no}"
5124 echo "threading support         ${thread_type-no}"
5125 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5126 echo "SDL support               ${sdl-no}"
5127 echo "opencl enabled            ${opencl-no}"
5128 echo "libzvbi enabled           ${libzvbi-no}"
5129 echo "texi2html enabled         ${texi2html-no}"
5130 echo "perl enabled              ${perl-no}"
5131 echo "pod2man enabled           ${pod2man-no}"
5132 echo "makeinfo enabled          ${makeinfo-no}"
5133 test -n "$random_seed" &&
5134     echo "random seed               ${random_seed}"
5135 echo
5136
5137 echo "External libraries:"
5138 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5139 echo
5140
5141 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5142     echo "Enabled ${type}s:"
5143     eval list=\$$(toupper $type)_LIST
5144     print_enabled '_*' $list | print_3_columns
5145     echo
5146 done
5147
5148 license="LGPL version 2.1 or later"
5149 if enabled nonfree; then
5150     license="nonfree and unredistributable"
5151 elif enabled gplv3; then
5152     license="GPL version 3 or later"
5153 elif enabled lgplv3; then
5154     license="LGPL version 3 or later"
5155 elif enabled gpl; then
5156     license="GPL version 2 or later"
5157 fi
5158
5159 echo "License: $license"
5160
5161 echo "Creating config.mak, config.h, and doc/config.texi..."
5162
5163 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5164
5165 enabled stripping || strip="echo skipping strip"
5166
5167 config_files="$TMPH config.mak doc/config.texi"
5168
5169 cat > config.mak <<EOF
5170 # Automatically generated by configure - do not modify!
5171 ifndef FFMPEG_CONFIG_MAK
5172 FFMPEG_CONFIG_MAK=1
5173 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5174 prefix=$prefix
5175 LIBDIR=\$(DESTDIR)$libdir
5176 SHLIBDIR=\$(DESTDIR)$shlibdir
5177 INCDIR=\$(DESTDIR)$incdir
5178 BINDIR=\$(DESTDIR)$bindir
5179 DATADIR=\$(DESTDIR)$datadir
5180 DOCDIR=\$(DESTDIR)$docdir
5181 MANDIR=\$(DESTDIR)$mandir
5182 SRC_PATH=$source_path
5183 ifndef MAIN_MAKEFILE
5184 SRC_PATH:=\$(SRC_PATH:.%=..%)
5185 endif
5186 CC_IDENT=$cc_ident
5187 ARCH=$arch
5188 CC=$cc
5189 CXX=$cxx
5190 AS=$as
5191 LD=$ld
5192 DEPCC=$dep_cc
5193 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5194 DEPAS=$as
5195 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5196 YASM=$yasmexe
5197 DEPYASM=$yasmexe
5198 AR=$ar
5199 ARFLAGS=$arflags
5200 AR_O=$ar_o
5201 RANLIB=$ranlib
5202 STRIP=$strip
5203 CP=cp -p
5204 LN_S=$ln_s
5205 CPPFLAGS=$CPPFLAGS
5206 CFLAGS=$CFLAGS
5207 CXXFLAGS=$CXXFLAGS
5208 ASFLAGS=$ASFLAGS
5209 AS_C=$AS_C
5210 AS_O=$AS_O
5211 CC_C=$CC_C
5212 CC_E=$CC_E
5213 CC_O=$CC_O
5214 CXX_C=$CXX_C
5215 CXX_O=$CXX_O
5216 LD_O=$LD_O
5217 LD_LIB=$LD_LIB
5218 LD_PATH=$LD_PATH
5219 DLLTOOL=$dlltool
5220 WINDRES=$windres
5221 DEPWINDRES=$dep_cc
5222 LDFLAGS=$LDFLAGS
5223 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5224 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5225 YASMFLAGS=$YASMFLAGS
5226 BUILDSUF=$build_suffix
5227 PROGSSUF=$progs_suffix
5228 FULLNAME=$FULLNAME
5229 LIBPREF=$LIBPREF
5230 LIBSUF=$LIBSUF
5231 LIBNAME=$LIBNAME
5232 SLIBPREF=$SLIBPREF
5233 SLIBSUF=$SLIBSUF
5234 EXESUF=$EXESUF
5235 EXTRA_VERSION=$extra_version
5236 CCDEP=$CCDEP
5237 CXXDEP=$CXXDEP
5238 CCDEP_FLAGS=$CCDEP_FLAGS
5239 ASDEP=$ASDEP
5240 ASDEP_FLAGS=$ASDEP_FLAGS
5241 CC_DEPFLAGS=$CC_DEPFLAGS
5242 AS_DEPFLAGS=$AS_DEPFLAGS
5243 HOSTCC=$host_cc
5244 HOSTLD=$host_ld
5245 HOSTCFLAGS=$host_cflags
5246 HOSTCPPFLAGS=$host_cppflags
5247 HOSTEXESUF=$HOSTEXESUF
5248 HOSTLDFLAGS=$host_ldflags
5249 HOSTLIBS=$host_libs
5250 DEPHOSTCC=$host_cc
5251 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5252 HOSTCCDEP=$HOSTCCDEP
5253 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5254 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5255 HOSTCC_C=$HOSTCC_C
5256 HOSTCC_O=$HOSTCC_O
5257 HOSTLD_O=$HOSTLD_O
5258 TARGET_EXEC=$target_exec $target_exec_args
5259 TARGET_PATH=$target_path
5260 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5261 CFLAGS-ffplay=$sdl_cflags
5262 ZLIB=$($ldflags_filter -lz)
5263 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5264 EXTRALIBS=$extralibs
5265 COMPAT_OBJS=$compat_objs
5266 EXEOBJS=$exeobjs
5267 INSTALL=$install
5268 LIBTARGET=${LIBTARGET}
5269 SLIBNAME=${SLIBNAME}
5270 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5271 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5272 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5273 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5274 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5275 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5276 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5277 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5278 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5279 NOREDZONE_FLAGS=$noredzone_flags
5280 EOF
5281
5282 get_version(){
5283     lcname=lib${1}
5284     name=$(toupper $lcname)
5285     file=$source_path/$lcname/version.h
5286     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5287     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5288     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5289     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5290     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5291     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5292 }
5293
5294 map 'get_version $v' $LIBRARY_LIST
5295
5296 print_program_libs(){
5297     eval "program_libs=\$${1}_libs"
5298     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5299 }
5300
5301 map 'print_program_libs $v' $PROGRAM_LIST
5302
5303 cat > $TMPH <<EOF
5304 /* Automatically generated by configure - do not modify! */
5305 #ifndef FFMPEG_CONFIG_H
5306 #define FFMPEG_CONFIG_H
5307 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5308 #define FFMPEG_LICENSE "$(c_escape $license)"
5309 #define CONFIG_THIS_YEAR 2014
5310 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5311 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5312 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5313 #define av_restrict $_restrict
5314 #define EXTERN_PREFIX "${extern_prefix}"
5315 #define EXTERN_ASM ${extern_prefix}
5316 #define BUILDSUF "$build_suffix"
5317 #define SLIBSUF "$SLIBSUF"
5318 #define HAVE_MMX2 HAVE_MMXEXT
5319 EOF
5320
5321 test -n "$assert_level" &&
5322     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5323
5324 test -n "$malloc_prefix" &&
5325     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5326
5327 if enabled yasm; then
5328     append config_files $TMPASM
5329     printf '' >$TMPASM
5330 fi
5331
5332 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5333
5334
5335 mkdir -p doc
5336 echo "@c auto-generated by configure" > doc/config.texi
5337
5338 print_config ARCH_   "$config_files" $ARCH_LIST
5339 print_config HAVE_   "$config_files" $HAVE_LIST
5340 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5341                                      $CONFIG_EXTRA      \
5342                                      $ALL_COMPONENTS    \
5343
5344 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5345 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5346
5347 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5348 cp_if_changed $TMPH config.h
5349 touch .config
5350
5351 enabled yasm && cp_if_changed $TMPASM config.asm
5352
5353 cat > $TMPH <<EOF
5354 /* Generated by ffconf */
5355 #ifndef AVUTIL_AVCONFIG_H
5356 #define AVUTIL_AVCONFIG_H
5357 EOF
5358
5359 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5360
5361 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5362
5363 cp_if_changed $TMPH libavutil/avconfig.h
5364
5365 if test -n "$WARNINGS"; then
5366     printf "\n$WARNINGS"
5367     enabled fatal_warnings && exit 1
5368 fi
5369
5370 # build pkg-config files
5371
5372 pkgconfig_generate(){
5373     name=$1
5374     shortname=${name#lib}${build_suffix}
5375     comment=$2
5376     version=$3
5377     libs=$4
5378     requires=$5
5379     enabled ${name#lib} || return 0
5380     mkdir -p $name
5381     cat <<EOF > $name/$name${build_suffix}.pc
5382 prefix=$prefix
5383 exec_prefix=\${prefix}
5384 libdir=$libdir
5385 includedir=$incdir
5386
5387 Name: $name
5388 Description: $comment
5389 Version: $version
5390 Requires: $(enabled shared || echo $requires)
5391 Requires.private: $(enabled shared && echo $requires)
5392 Conflicts:
5393 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5394 Libs.private: $(enabled shared && echo $libs)
5395 Cflags: -I\${includedir}
5396 EOF
5397
5398 mkdir -p doc/examples/pc-uninstalled
5399 includedir=${source_path}
5400 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5401     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5402 prefix=
5403 exec_prefix=
5404 libdir=\${pcfiledir}/../../../$name
5405 includedir=${includedir}
5406
5407 Name: $name
5408 Description: $comment
5409 Version: $version
5410 Requires: $requires
5411 Conflicts:
5412 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5413 Cflags: -I\${includedir}
5414 EOF
5415 }
5416
5417 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5418 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5419 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5420 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5421 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5422 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5423 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5424 lavfi_libs=${lavfi_libs%, }
5425
5426 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5427 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5428
5429 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5430 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5431 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5432 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5433 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5434 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5435 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5436 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5437 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"