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 -Werror=missing-prototypes $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 rawvideo_decoder_select="dsputil"
2106 rtjpeg_decoder_select="dsputil"
2107 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2108 rv10_encoder_select="h263_encoder"
2109 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2110 rv20_encoder_select="h263_encoder"
2111 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2112 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2113 shorten_decoder_select="golomb"
2114 sipr_decoder_select="lsp"
2115 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2116 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2117 sonic_decoder_select="golomb rangecoder"
2118 sonic_encoder_select="golomb rangecoder"
2119 sonic_ls_encoder_select="golomb"
2120 sp5x_decoder_select="mjpeg_decoder"
2121 svq1_decoder_select="hpeldsp"
2122 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2123 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2124 svq3_decoder_suggest="zlib"
2125 tak_decoder_select="dsputil"
2126 theora_decoder_select="vp3_decoder"
2127 thp_decoder_select="mjpeg_decoder"
2128 tiff_decoder_suggest="zlib"
2129 tiff_encoder_suggest="zlib"
2130 truehd_decoder_select="mlp_parser"
2131 truemotion2_decoder_select="dsputil"
2132 truespeech_decoder_select="dsputil"
2133 tscc_decoder_select="zlib"
2134 twinvq_decoder_select="mdct lsp sinewin"
2135 utvideo_decoder_select="dsputil"
2136 utvideo_encoder_select="dsputil huffman"
2137 vble_decoder_select="dsputil"
2138 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2139 vc1image_decoder_select="vc1_decoder"
2140 vorbis_decoder_select="mdct"
2141 vorbis_encoder_select="mdct"
2142 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2143 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2144 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2145 vp6a_decoder_select="vp6_decoder"
2146 vp6f_decoder_select="vp6_decoder"
2147 vp7_decoder_select="h264pred videodsp"
2148 vp8_decoder_select="h264pred videodsp"
2149 vp9_decoder_select="videodsp"
2150 webp_decoder_select="vp8_decoder"
2151 wmapro_decoder_select="mdct sinewin"
2152 wmav1_decoder_select="mdct sinewin"
2153 wmav1_encoder_select="mdct sinewin"
2154 wmav2_decoder_select="mdct sinewin"
2155 wmav2_encoder_select="mdct sinewin"
2156 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2157 wmv1_decoder_select="h263_decoder"
2158 wmv1_encoder_select="h263_encoder"
2159 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2160 wmv2_encoder_select="h263_encoder"
2161 wmv3_decoder_select="vc1_decoder"
2162 wmv3image_decoder_select="wmv3_decoder"
2163 zerocodec_decoder_select="zlib"
2164 zlib_decoder_select="zlib"
2165 zlib_encoder_select="zlib"
2166 zmbv_decoder_select="zlib"
2167 zmbv_encoder_select="zlib"
2168
2169 # hardware accelerators
2170 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2171 dxva2_deps="dxva2api_h"
2172 vaapi_deps="va_va_h"
2173 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2174 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2175 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2176 xvmc_deps="X11_extensions_XvMClib_h"
2177
2178 h263_vaapi_hwaccel_deps="vaapi"
2179 h263_vaapi_hwaccel_select="h263_decoder"
2180 h263_vdpau_hwaccel_deps="vdpau"
2181 h263_vdpau_hwaccel_select="h263_decoder"
2182 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2183 h264_dxva2_hwaccel_deps="dxva2"
2184 h264_dxva2_hwaccel_select="h264_decoder"
2185 h264_vaapi_hwaccel_deps="vaapi"
2186 h264_vaapi_hwaccel_select="h264_decoder"
2187 h264_vda_decoder_deps="vda"
2188 h264_vda_decoder_select="h264_decoder"
2189 h264_vda_hwaccel_deps="vda"
2190 h264_vda_hwaccel_select="h264_decoder"
2191 h264_vdpau_decoder_deps="vdpau"
2192 h264_vdpau_decoder_select="h264_decoder"
2193 h264_vdpau_hwaccel_deps="vdpau"
2194 h264_vdpau_hwaccel_select="h264_decoder"
2195 mpeg_vdpau_decoder_deps="vdpau"
2196 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2197 mpeg_xvmc_hwaccel_deps="xvmc"
2198 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2199 mpeg1_vdpau_decoder_deps="vdpau"
2200 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2201 mpeg1_vdpau_hwaccel_deps="vdpau"
2202 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2203 mpeg1_xvmc_hwaccel_deps="xvmc"
2204 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2205 mpeg2_crystalhd_decoder_select="crystalhd"
2206 mpeg2_dxva2_hwaccel_deps="dxva2"
2207 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2208 mpeg2_vaapi_hwaccel_deps="vaapi"
2209 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2210 mpeg2_vdpau_hwaccel_deps="vdpau"
2211 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2212 mpeg2_xvmc_hwaccel_deps="xvmc"
2213 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2214 mpeg4_crystalhd_decoder_select="crystalhd"
2215 mpeg4_vaapi_hwaccel_deps="vaapi"
2216 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2217 mpeg4_vdpau_decoder_deps="vdpau"
2218 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2219 mpeg4_vdpau_hwaccel_deps="vdpau"
2220 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2221 msmpeg4_crystalhd_decoder_select="crystalhd"
2222 vc1_crystalhd_decoder_select="crystalhd"
2223 vc1_dxva2_hwaccel_deps="dxva2"
2224 vc1_dxva2_hwaccel_select="vc1_decoder"
2225 vc1_vaapi_hwaccel_deps="vaapi"
2226 vc1_vaapi_hwaccel_select="vc1_decoder"
2227 vc1_vdpau_decoder_deps="vdpau"
2228 vc1_vdpau_decoder_select="vc1_decoder"
2229 vc1_vdpau_hwaccel_deps="vdpau"
2230 vc1_vdpau_hwaccel_select="vc1_decoder"
2231 wmv3_crystalhd_decoder_select="crystalhd"
2232 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2233 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2234 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2235 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2236
2237 # parsers
2238 h264_parser_select="h264_decoder"
2239 hevc_parser_select="hevc_decoder"
2240 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2241 mpegvideo_parser_select="error_resilience mpegvideo"
2242 vc1_parser_select="mpegvideo"
2243
2244 # external libraries
2245 libaacplus_encoder_deps="libaacplus"
2246 libcelt_decoder_deps="libcelt"
2247 libfaac_encoder_deps="libfaac"
2248 libfaac_encoder_select="audio_frame_queue"
2249 libfdk_aac_decoder_deps="libfdk_aac"
2250 libfdk_aac_encoder_deps="libfdk_aac"
2251 libfdk_aac_encoder_select="audio_frame_queue"
2252 libgme_demuxer_deps="libgme"
2253 libgsm_decoder_deps="libgsm"
2254 libgsm_encoder_deps="libgsm"
2255 libgsm_ms_decoder_deps="libgsm"
2256 libgsm_ms_encoder_deps="libgsm"
2257 libilbc_decoder_deps="libilbc"
2258 libilbc_encoder_deps="libilbc"
2259 libmodplug_demuxer_deps="libmodplug"
2260 libmp3lame_encoder_deps="libmp3lame"
2261 libmp3lame_encoder_select="audio_frame_queue"
2262 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2263 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2264 libopencore_amrnb_encoder_select="audio_frame_queue"
2265 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libquvi_demuxer_deps="libquvi"
2272 libschroedinger_decoder_deps="libschroedinger"
2273 libschroedinger_encoder_deps="libschroedinger"
2274 libshine_encoder_deps="libshine"
2275 libshine_encoder_select="audio_frame_queue"
2276 libspeex_decoder_deps="libspeex"
2277 libspeex_encoder_deps="libspeex"
2278 libspeex_encoder_select="audio_frame_queue"
2279 libstagefright_h264_decoder_deps="libstagefright_h264"
2280 libtheora_encoder_deps="libtheora"
2281 libtwolame_encoder_deps="libtwolame"
2282 libvo_aacenc_encoder_deps="libvo_aacenc"
2283 libvo_aacenc_encoder_select="audio_frame_queue"
2284 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2285 libvorbis_decoder_deps="libvorbis"
2286 libvorbis_encoder_deps="libvorbis"
2287 libvorbis_encoder_select="audio_frame_queue"
2288 libvpx_vp8_decoder_deps="libvpx"
2289 libvpx_vp8_encoder_deps="libvpx"
2290 libvpx_vp9_decoder_deps="libvpx"
2291 libvpx_vp9_encoder_deps="libvpx"
2292 libwavpack_encoder_deps="libwavpack"
2293 libwebp_encoder_deps="libwebp"
2294 libx264_encoder_deps="libx264"
2295 libx264rgb_encoder_deps="libx264"
2296 libx265_encoder_deps="libx265"
2297 libxavs_encoder_deps="libxavs"
2298 libxvid_encoder_deps="libxvid"
2299 libutvideo_decoder_deps="libutvideo"
2300 libutvideo_encoder_deps="libutvideo"
2301 libzvbi_teletext_decoder_deps="libzvbi"
2302
2303 # demuxers / muxers
2304 ac3_demuxer_select="ac3_parser"
2305 asf_demuxer_select="riffdec"
2306 asf_muxer_select="riffenc"
2307 asf_stream_muxer_select="asf_muxer"
2308 avi_demuxer_select="riffdec exif"
2309 avi_muxer_select="riffenc"
2310 avisynth_demuxer_deps="avisynth"
2311 avisynth_demuxer_select="riffdec"
2312 caf_demuxer_select="riffdec"
2313 dirac_demuxer_select="dirac_parser"
2314 dts_demuxer_select="dca_parser"
2315 dtshd_demuxer_select="dca_parser"
2316 dxa_demuxer_select="riffdec"
2317 eac3_demuxer_select="ac3_parser"
2318 f4v_muxer_select="mov_muxer"
2319 flac_demuxer_select="flac_parser"
2320 hds_muxer_select="flv_muxer"
2321 hls_muxer_select="mpegts_muxer"
2322 ipod_muxer_select="mov_muxer"
2323 ismv_muxer_select="mov_muxer"
2324 libnut_demuxer_deps="libnut"
2325 libnut_muxer_deps="libnut"
2326 matroska_audio_muxer_select="matroska_muxer"
2327 matroska_demuxer_select="riffdec"
2328 matroska_demuxer_suggest="bzlib lzo zlib"
2329 matroska_muxer_select="riffenc"
2330 mmf_muxer_select="riffenc"
2331 mov_demuxer_select="riffdec"
2332 mov_demuxer_suggest="zlib"
2333 mov_muxer_select="riffenc rtpenc_chain"
2334 mp3_demuxer_select="mpegaudio_parser"
2335 mp4_muxer_select="mov_muxer"
2336 mpegts_muxer_select="adts_muxer latm_muxer"
2337 mpegtsraw_demuxer_select="mpegts_demuxer"
2338 mxf_d10_muxer_select="mxf_muxer"
2339 nut_muxer_select="riffenc"
2340 nuv_demuxer_select="riffdec"
2341 ogg_demuxer_select="golomb"
2342 psp_muxer_select="mov_muxer"
2343 rtp_demuxer_select="sdp_demuxer"
2344 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2345 rtsp_demuxer_select="http_protocol rtpdec"
2346 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2347 sap_demuxer_select="sdp_demuxer"
2348 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2349 sdp_demuxer_select="rtpdec"
2350 smoothstreaming_muxer_select="ismv_muxer"
2351 spdif_muxer_select="aac_parser"
2352 tak_demuxer_select="tak_parser"
2353 tg2_muxer_select="mov_muxer"
2354 tgp_muxer_select="mov_muxer"
2355 vobsub_demuxer_select="mpegps_demuxer"
2356 w64_demuxer_select="wav_demuxer"
2357 w64_muxer_select="wav_muxer"
2358 wav_demuxer_select="riffdec"
2359 wav_muxer_select="riffenc"
2360 webm_muxer_select="riffenc"
2361 wtv_demuxer_select="riffdec"
2362 wtv_muxer_select="riffenc"
2363 xmv_demuxer_select="riffdec"
2364 xwma_demuxer_select="riffdec"
2365
2366 # indevs / outdevs
2367 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2368 alsa_outdev_deps="alsa_asoundlib_h"
2369 avfoundation_indev_extralibs="-framework AVFoundation -framework CoreMedia"
2370 avfoundation_indev_select="avfoundation"
2371 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2372 caca_outdev_deps="libcaca"
2373 decklink_outdev_deps="decklink pthreads"
2374 decklink_outdev_extralibs="-lstdc++"
2375 dshow_indev_deps="IBaseFilter"
2376 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2377 dv1394_indev_deps="dv1394"
2378 dv1394_indev_select="dv_demuxer"
2379 fbdev_indev_deps="linux_fb_h"
2380 fbdev_outdev_deps="linux_fb_h"
2381 gdigrab_indev_deps="CreateDIBSection"
2382 gdigrab_indev_extralibs="-lgdi32"
2383 gdigrab_indev_select="bmp_decoder"
2384 iec61883_indev_deps="libiec61883"
2385 jack_indev_deps="jack_jack_h sem_timedwait"
2386 lavfi_indev_deps="avfilter"
2387 libcdio_indev_deps="libcdio"
2388 libdc1394_indev_deps="libdc1394"
2389 libv4l2_indev_deps="libv4l2"
2390 openal_indev_deps="openal"
2391 opengl_outdev_deps="opengl"
2392 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2393 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2394 pulse_indev_deps="libpulse"
2395 pulse_outdev_deps="libpulse"
2396 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2397 qtkit_indev_select="qtkit"
2398 sdl_outdev_deps="sdl"
2399 sndio_indev_deps="sndio_h"
2400 sndio_outdev_deps="sndio_h"
2401 v4l_indev_deps="linux_videodev_h"
2402 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2403 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2404 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2405 vfwcap_indev_extralibs="-lavicap32"
2406 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2407 xv_outdev_extralibs="-lXv -lX11 -lXext"
2408 x11grab_indev_deps="x11grab"
2409
2410 # protocols
2411 bluray_protocol_deps="libbluray"
2412 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2413 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2414 ffrtmpcrypt_protocol_select="tcp_protocol"
2415 ffrtmphttp_protocol_deps="!librtmp_protocol"
2416 ffrtmphttp_protocol_select="http_protocol"
2417 ftp_protocol_select="tcp_protocol"
2418 gopher_protocol_select="network"
2419 http_protocol_select="tcp_protocol"
2420 httpproxy_protocol_select="tcp_protocol"
2421 https_protocol_select="tls_protocol"
2422 librtmp_protocol_deps="librtmp"
2423 librtmpe_protocol_deps="librtmp"
2424 librtmps_protocol_deps="librtmp"
2425 librtmpt_protocol_deps="librtmp"
2426 librtmpte_protocol_deps="librtmp"
2427 libssh_protocol_deps="libssh"
2428 mmsh_protocol_select="http_protocol"
2429 mmst_protocol_select="network"
2430 rtmp_protocol_deps="!librtmp_protocol"
2431 rtmp_protocol_select="tcp_protocol"
2432 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2433 rtmps_protocol_deps="!librtmp_protocol"
2434 rtmps_protocol_select="tls_protocol"
2435 rtmpt_protocol_select="ffrtmphttp_protocol"
2436 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2437 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2438 rtp_protocol_select="udp_protocol"
2439 sctp_protocol_deps="struct_sctp_event_subscribe"
2440 sctp_protocol_select="network"
2441 srtp_protocol_select="rtp_protocol"
2442 tcp_protocol_select="network"
2443 tls_protocol_deps_any="openssl gnutls"
2444 tls_protocol_select="tcp_protocol"
2445 udp_protocol_select="network"
2446 unix_protocol_deps="sys_un_h"
2447 unix_protocol_select="network"
2448
2449 # filters
2450 aconvert_filter_deps="swresample"
2451 amovie_filter_deps="avcodec avformat"
2452 aresample_filter_deps="swresample"
2453 ass_filter_deps="libass"
2454 asyncts_filter_deps="avresample"
2455 atempo_filter_deps="avcodec"
2456 atempo_filter_select="rdft"
2457 azmq_filter_deps="libzmq"
2458 blackframe_filter_deps="gpl"
2459 boxblur_filter_deps="gpl"
2460 colormatrix_filter_deps="gpl"
2461 cropdetect_filter_deps="gpl"
2462 dctdnoiz_filter_deps="avcodec"
2463 dctdnoiz_filter_select="dct"
2464 delogo_filter_deps="gpl"
2465 deshake_filter_deps="avcodec"
2466 deshake_filter_select="dsputil"
2467 drawtext_filter_deps="libfreetype"
2468 ebur128_filter_deps="gpl"
2469 flite_filter_deps="libflite"
2470 frei0r_filter_deps="frei0r dlopen"
2471 frei0r_filter_extralibs='$ldl'
2472 frei0r_src_filter_deps="frei0r dlopen"
2473 frei0r_src_filter_extralibs='$ldl'
2474 geq_filter_deps="gpl"
2475 histeq_filter_deps="gpl"
2476 hqdn3d_filter_deps="gpl"
2477 interlace_filter_deps="gpl"
2478 kerndeint_filter_deps="gpl"
2479 ladspa_filter_deps="ladspa dlopen"
2480 mcdeint_filter_deps="avcodec gpl"
2481 movie_filter_deps="avcodec avformat"
2482 mp_filter_deps="gpl avcodec swscale inline_asm"
2483 mpdecimate_filter_deps="gpl avcodec"
2484 mptestsrc_filter_deps="gpl"
2485 negate_filter_deps="lut_filter"
2486 perspective_filter_deps="gpl"
2487 ocv_filter_deps="libopencv"
2488 owdenoise_filter_deps="gpl"
2489 pan_filter_deps="swresample"
2490 phase_filter_deps="gpl"
2491 pp_filter_deps="gpl postproc"
2492 pullup_filter_deps="gpl"
2493 removelogo_filter_deps="avcodec avformat swscale"
2494 resample_filter_deps="avresample"
2495 sab_filter_deps="gpl swscale"
2496 scale_filter_deps="swscale"
2497 smartblur_filter_deps="gpl swscale"
2498 showspectrum_filter_deps="avcodec"
2499 showspectrum_filter_select="rdft"
2500 spp_filter_deps="gpl avcodec"
2501 spp_filter_select="fft"
2502 stereo3d_filter_deps="gpl"
2503 subtitles_filter_deps="avformat avcodec libass"
2504 super2xsai_filter_deps="gpl"
2505 tinterlace_filter_deps="gpl"
2506 vidstabdetect_filter_deps="libvidstab"
2507 vidstabtransform_filter_deps="libvidstab"
2508 pixfmts_super2xsai_test_deps="super2xsai_filter"
2509 tinterlace_merge_test_deps="tinterlace_filter"
2510 tinterlace_pad_test_deps="tinterlace_filter"
2511 zmq_filter_deps="libzmq"
2512
2513 # examples
2514 avio_reading="avformat avcodec avutil"
2515 avcodec_example_deps="avcodec avutil"
2516 demuxing_decoding_example_deps="avcodec avformat avutil"
2517 filter_audio_example_deps="avfilter avutil"
2518 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2519 filtering_video_example_deps="avfilter avcodec avformat avutil"
2520 metadata_example_deps="avformat avutil"
2521 muxing_example_deps="avcodec avformat avutil swscale"
2522 remuxing_example_deps="avcodec avformat avutil"
2523 resampling_audio_example_deps="avutil swresample"
2524 scaling_video_example_deps="avutil swscale"
2525 transcode_aac_example_deps="avcodec avformat swresample"
2526 transcoding_example_deps="avfilter avcodec avformat avutil"
2527
2528 # libraries
2529 avcodec_deps="avutil"
2530 avdevice_deps="avutil avcodec avformat"
2531 avfilter_deps="avutil"
2532 avformat_deps="avutil avcodec"
2533 avresample_deps="avutil"
2534 postproc_deps="avutil gpl"
2535 swscale_deps="avutil"
2536
2537 # programs
2538 ffmpeg_deps="avcodec avfilter avformat swresample"
2539 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2540                null_filter
2541                setpts_filter trim_filter"
2542 ffplay_deps="avcodec avformat swscale swresample sdl"
2543 ffplay_libs='$sdl_libs'
2544 ffplay_select="rdft crop_filter"
2545 ffprobe_deps="avcodec avformat"
2546 ffserver_deps="avformat fork sarestart"
2547 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2548
2549 # documentation
2550 podpages_deps="perl"
2551 manpages_deps="perl pod2man"
2552 htmlpages_deps="perl texi2html"
2553 txtpages_deps="perl makeinfo"
2554 doc_deps_any="manpages htmlpages podpages txtpages"
2555
2556 # default parameters
2557
2558 logfile="config.log"
2559
2560 # installation paths
2561 prefix_default="/usr/local"
2562 bindir_default='${prefix}/bin'
2563 datadir_default='${prefix}/share/ffmpeg'
2564 docdir_default='${prefix}/share/doc/ffmpeg'
2565 incdir_default='${prefix}/include'
2566 libdir_default='${prefix}/lib'
2567 mandir_default='${prefix}/share/man'
2568 shlibdir_default="$libdir_default"
2569
2570 # toolchain
2571 ar_default="ar"
2572 cc_default="gcc"
2573 cxx_default="g++"
2574 host_cc_default="gcc"
2575 cp_f="cp -f"
2576 install="install"
2577 ln_s="ln -s -f"
2578 nm_default="nm -g"
2579 objformat="elf"
2580 pkg_config_default=pkg-config
2581 ranlib="ranlib"
2582 strip_default="strip"
2583 yasmexe_default="yasm"
2584 windres_default="windres"
2585
2586 nogas=":"
2587
2588 # OS
2589 target_os_default=$(tolower $(uname -s))
2590 host_os=$target_os_default
2591
2592 # machine
2593 if test "$target_os_default" = aix; then
2594     arch_default=$(uname -p)
2595 else
2596     arch_default=$(uname -m)
2597 fi
2598 cpu="generic"
2599
2600 # configurable options
2601 enable $PROGRAM_LIST
2602 enable $DOCUMENT_LIST
2603 enable $EXAMPLE_LIST
2604 enable $(filter_out avresample $LIBRARY_LIST)
2605 enable stripping
2606
2607 enable asm
2608 enable debug
2609 enable doc
2610 enable optimizations
2611 enable runtime_cpudetect
2612 enable safe_bitstream_reader
2613 enable static
2614 enable swscale_alpha
2615
2616 # Enable hwaccels by default.
2617 enable dxva2 vaapi vda vdpau xvmc
2618 enable xlib
2619
2620 # build settings
2621 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2622 LIBPREF="lib"
2623 LIBSUF=".a"
2624 FULLNAME='$(NAME)$(BUILDSUF)'
2625 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2626 SLIBPREF="lib"
2627 SLIBSUF=".so"
2628 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2629 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2630 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2631 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2632 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2633 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2634
2635 asflags_filter=echo
2636 cflags_filter=echo
2637 ldflags_filter=echo
2638
2639 AS_C='-c'
2640 AS_O='-o $@'
2641 CC_C='-c'
2642 CC_E='-E -o $@'
2643 CC_O='-o $@'
2644 CXX_C='-c'
2645 CXX_O='-o $@'
2646 LD_O='-o $@'
2647 LD_LIB='-l%'
2648 LD_PATH='-L'
2649 HOSTCC_C='-c'
2650 HOSTCC_E='-E -o $@'
2651 HOSTCC_O='-o $@'
2652 HOSTLD_O='-o $@'
2653
2654 host_libs='-lm'
2655 host_cflags_filter=echo
2656 host_ldflags_filter=echo
2657
2658 target_path='$(CURDIR)'
2659
2660 # since the object filename is not given with the -MM flag, the compiler
2661 # is only able to print the basename, and we must add the path ourselves
2662 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2663 DEPFLAGS='-MM'
2664
2665 # find source path
2666 if test -f configure; then
2667     source_path=.
2668 else
2669     source_path=$(cd $(dirname "$0"); pwd)
2670     echo "$source_path" | grep -q '[[:blank:]]' &&
2671         die "Out of tree builds are impossible with whitespace in source path."
2672     test -e "$source_path/config.h" &&
2673         die "Out of tree builds are impossible with config.h in source dir."
2674 fi
2675
2676 for v in "$@"; do
2677     r=${v#*=}
2678     l=${v%"$r"}
2679     r=$(sh_quote "$r")
2680     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2681 done
2682
2683 find_things(){
2684     thing=$1
2685     pattern=$2
2686     file=$source_path/$3
2687     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2688 }
2689
2690 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2691 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2692 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2693 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2694 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2695 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2696 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2697 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2698 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2699 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2700 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2701
2702 ALL_COMPONENTS="
2703     $BSF_LIST
2704     $DECODER_LIST
2705     $DEMUXER_LIST
2706     $ENCODER_LIST
2707     $FILTER_LIST
2708     $HWACCEL_LIST
2709     $INDEV_LIST
2710     $MUXER_LIST
2711     $OUTDEV_LIST
2712     $PARSER_LIST
2713     $PROTOCOL_LIST
2714 "
2715
2716 for n in $COMPONENT_LIST; do
2717     v=$(toupper ${n%s})_LIST
2718     eval enable \$$v
2719     eval ${n}_if_any="\$$v"
2720 done
2721
2722 enable $ARCH_EXT_LIST
2723
2724 die_unknown(){
2725     echo "Unknown option \"$1\"."
2726     echo "See $0 --help for available options."
2727     exit 1
2728 }
2729
2730 print_3_columns() {
2731     cat | tr ' ' '\n' | sort | pr -r -3 -t
2732 }
2733
2734 show_list() {
2735     suffix=_$1
2736     shift
2737     echo $* | sed s/$suffix//g | print_3_columns
2738     exit 0
2739 }
2740
2741 rand_list(){
2742     IFS=', '
2743     set -- $*
2744     unset IFS
2745     for thing; do
2746         comp=${thing%:*}
2747         prob=${thing#$comp}
2748         prob=${prob#:}
2749         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2750         echo "prob ${prob:-0.5}"
2751         printf '%s\n' $comp
2752     done
2753 }
2754
2755 do_random(){
2756     action=$1
2757     shift
2758     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2759     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2760 }
2761
2762 for opt do
2763     optval="${opt#*=}"
2764     case "$opt" in
2765         --extra-ldflags=*)
2766             add_ldflags $optval
2767         ;;
2768         --extra-libs=*)
2769             add_extralibs $optval
2770         ;;
2771         --disable-devices)
2772             disable $INDEV_LIST $OUTDEV_LIST
2773         ;;
2774         --enable-debug=*)
2775             debuglevel="$optval"
2776         ;;
2777         --disable-programs)
2778             disable $PROGRAM_LIST
2779         ;;
2780         --disable-everything)
2781             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2782         ;;
2783         --disable-all)
2784             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2785             disable $LIBRARY_LIST $PROGRAM_LIST doc
2786         ;;
2787         --enable-random|--disable-random)
2788             action=${opt%%-random}
2789             do_random ${action#--} $COMPONENT_LIST
2790         ;;
2791         --enable-random=*|--disable-random=*)
2792             action=${opt%%-random=*}
2793             do_random ${action#--} $optval
2794         ;;
2795         --enable-*=*|--disable-*=*)
2796             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2797             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2798             eval list=\$$(toupper $thing)_LIST
2799             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2800             list=$(filter "$name" $list)
2801             [ "$list" = "" ] && warn "Option $opt did not match anything"
2802             $action $list
2803         ;;
2804         --enable-?*|--disable-?*)
2805             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2806             if is_in $option $COMPONENT_LIST; then
2807                 test $action = disable && action=unset
2808                 eval $action \$$(toupper ${option%s})_LIST
2809             elif is_in $option $CMDLINE_SELECT; then
2810                 $action $option
2811             else
2812                 die_unknown $opt
2813             fi
2814         ;;
2815         --list-*)
2816             NAME="${opt#--list-}"
2817             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2818             NAME=${NAME%s}
2819             eval show_list $NAME \$$(toupper $NAME)_LIST
2820         ;;
2821         --help|-h) show_help
2822         ;;
2823         --fatal-warnings) enable fatal_warnings
2824         ;;
2825         *)
2826             optname="${opt%%=*}"
2827             optname="${optname#--}"
2828             optname=$(echo "$optname" | sed 's/-/_/g')
2829             if is_in $optname $CMDLINE_SET; then
2830                 eval $optname='$optval'
2831             elif is_in $optname $CMDLINE_APPEND; then
2832                 append $optname "$optval"
2833             else
2834                 die_unknown $opt
2835             fi
2836         ;;
2837     esac
2838 done
2839
2840 disabled logging && logfile=/dev/null
2841
2842 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2843 set >> $logfile
2844
2845 test -n "$cross_prefix" && enable cross_compile
2846
2847 if enabled cross_compile; then
2848     test -n "$arch" && test -n "$target_os" ||
2849         die "Must specify target arch and OS when cross-compiling"
2850 fi
2851
2852 ar_default="${cross_prefix}${ar_default}"
2853 cc_default="${cross_prefix}${cc_default}"
2854 cxx_default="${cross_prefix}${cxx_default}"
2855 nm_default="${cross_prefix}${nm_default}"
2856 pkg_config_default="${cross_prefix}${pkg_config_default}"
2857 ranlib="${cross_prefix}${ranlib}"
2858 strip_default="${cross_prefix}${strip_default}"
2859 windres_default="${cross_prefix}${windres_default}"
2860
2861 sysinclude_default="${sysroot}/usr/include"
2862
2863 test -n "$valgrind" && toolchain="valgrind-memcheck"
2864
2865 case "$toolchain" in
2866     clang-asan)
2867         cc_default="clang"
2868         add_cflags  -fsanitize=address
2869         add_ldflags -fsanitize=address
2870     ;;
2871     clang-tsan)
2872         cc_default="clang"
2873         add_cflags  -fsanitize=thread -pie
2874         add_ldflags -fsanitize=thread -pie
2875     ;;
2876     clang-usan)
2877         cc_default="clang"
2878         add_cflags  -fsanitize=undefined
2879         add_ldflags -fsanitize=undefined
2880     ;;
2881     gcc-asan)
2882         cc_default="gcc"
2883         add_cflags  -fsanitize=address
2884         add_ldflags -fsanitize=address
2885     ;;
2886     gcc-tsan)
2887         cc_default="gcc"
2888         add_cflags  -fsanitize=thread -pie -fPIC
2889         add_ldflags -fsanitize=thread -pie -fPIC
2890     ;;
2891     gcc-usan)
2892         cc_default="gcc"
2893         add_cflags  -fsanitize=undefined
2894         add_ldflags -fsanitize=undefined
2895     ;;
2896     valgrind-massif)
2897         target_exec_default=${valgrind:-"valgrind"}
2898         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"
2899     ;;
2900     valgrind-memcheck)
2901         target_exec_default=${valgrind:-"valgrind"}
2902         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2903     ;;
2904     msvc)
2905         # Check whether the current MSVC version needs the C99 converter.
2906         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2907         # support enough of C99 to build ffmpeg. Default to the new
2908         # behaviour if the regexp was unable to match anything, since this
2909         # successfully parses the version number of existing supported
2910         # versions that require the converter (MSVC 2010 and 2012).
2911         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2912         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2913             cc_default="cl"
2914         else
2915             cc_default="c99wrap cl"
2916         fi
2917         ld_default="link"
2918         nm_default="dumpbin -symbols"
2919         ar_default="lib"
2920         target_os_default="win32"
2921         # Use a relative path for TMPDIR. This makes sure all the
2922         # ffconf temp files are written with a relative path, avoiding
2923         # issues with msys/win32 path conversion for MSVC parameters
2924         # such as -Fo<file> or -out:<file>.
2925         TMPDIR=.
2926     ;;
2927     icl)
2928         cc_default="icl"
2929         ld_default="xilink"
2930         nm_default="dumpbin -symbols"
2931         ar_default="xilib"
2932         target_os_default="win32"
2933         TMPDIR=.
2934     ;;
2935     gcov)
2936         add_cflags  -fprofile-arcs -ftest-coverage
2937         add_ldflags -fprofile-arcs -ftest-coverage
2938     ;;
2939     hardened)
2940         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2941         add_ldflags -Wl,-z,relro -Wl,-z,now
2942     ;;
2943     ?*)
2944         die "Unknown toolchain $toolchain"
2945     ;;
2946 esac
2947
2948 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2949 enabled cross_compile || host_cc_default=$cc
2950 set_default host_cc
2951
2952 if ! $pkg_config --version >/dev/null 2>&1; then
2953     warn "$pkg_config not found, library detection may fail."
2954     pkg_config=false
2955 fi
2956
2957 exesuf() {
2958     case $1 in
2959         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2960     esac
2961 }
2962
2963 EXESUF=$(exesuf $target_os)
2964 HOSTEXESUF=$(exesuf $host_os)
2965
2966 # set temporary file name
2967 : ${TMPDIR:=$TEMPDIR}
2968 : ${TMPDIR:=$TMP}
2969 : ${TMPDIR:=/tmp}
2970
2971 if [ -n "$tempprefix" ] ; then
2972     mktemp(){
2973         echo $tempprefix.${HOSTNAME}.${UID}
2974     }
2975 elif ! check_cmd mktemp -u XXXXXX; then
2976     # simple replacement for missing mktemp
2977     # NOT SAFE FOR GENERAL USE
2978     mktemp(){
2979         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2980     }
2981 fi
2982
2983 tmpfile(){
2984     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2985         (set -C; exec > $tmp) 2>/dev/null ||
2986         die "Unable to create temporary file in $TMPDIR."
2987     append TMPFILES $tmp
2988     eval $1=$tmp
2989 }
2990
2991 trap 'rm -f -- $TMPFILES' EXIT
2992
2993 tmpfile TMPASM .asm
2994 tmpfile TMPC   .c
2995 tmpfile TMPCPP .cpp
2996 tmpfile TMPE   $EXESUF
2997 tmpfile TMPH   .h
2998 tmpfile TMPM   .m
2999 tmpfile TMPO   .o
3000 tmpfile TMPS   .S
3001 tmpfile TMPSH  .sh
3002 tmpfile TMPV   .ver
3003
3004 unset -f mktemp
3005
3006 chmod +x $TMPE
3007
3008 # make sure we can execute files in $TMPDIR
3009 cat > $TMPSH 2>> $logfile <<EOF
3010 #! /bin/sh
3011 EOF
3012 chmod +x $TMPSH >> $logfile 2>&1
3013 if ! $TMPSH >> $logfile 2>&1; then
3014     cat <<EOF
3015 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3016 variable to another directory and make sure that it is not mounted noexec.
3017 EOF
3018     die "Sanity test failed."
3019 fi
3020
3021 ccc_flags(){
3022     for flag; do
3023         case $flag in
3024             -std=c99)           echo -c99                       ;;
3025             -mcpu=*)            echo -arch ${flag#*=}           ;;
3026             -mieee)             echo -ieee                      ;;
3027             -O*|-fast)          echo $flag                      ;;
3028             -fno-math-errno)    echo -assume nomath_errno       ;;
3029             -g)                 echo -g3                        ;;
3030             -Wall)              echo -msg_enable level2         ;;
3031             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3032             -Wl,*)              echo $flag                      ;;
3033             -f*|-W*)                                            ;;
3034             *)                  echo $flag                      ;;
3035         esac
3036    done
3037 }
3038
3039 cparser_flags(){
3040     for flag; do
3041         case $flag in
3042             -Wno-switch)             echo -Wno-switch-enum ;;
3043             -Wno-format-zero-length) ;;
3044             -Wdisabled-optimization) ;;
3045             -Wno-pointer-sign)       echo -Wno-other ;;
3046             *)                       echo $flag ;;
3047         esac
3048     done
3049 }
3050
3051 msvc_common_flags(){
3052     for flag; do
3053         case $flag in
3054             # In addition to specifying certain flags under the compiler
3055             # specific filters, they must be specified here as well or else the
3056             # generic catch all at the bottom will print the original flag.
3057             -Wall)                ;;
3058             -std=c99)             ;;
3059             # Common flags
3060             -fomit-frame-pointer) ;;
3061             -g)                   echo -Z7 ;;
3062             -fno-math-errno)      ;;
3063             -fno-common)          ;;
3064             -fno-signed-zeros)    ;;
3065             -fPIC)                ;;
3066             -mthumb)              ;;
3067             -march=*)             ;;
3068             -lz)                  echo zlib.lib ;;
3069             -lavifil32)           echo vfw32.lib ;;
3070             -lavicap32)           echo vfw32.lib user32.lib ;;
3071             -l*)                  echo ${flag#-l}.lib ;;
3072             *)                    echo $flag ;;
3073         esac
3074     done
3075 }
3076
3077 msvc_flags(){
3078     msvc_common_flags "$@"
3079     for flag; do
3080         case $flag in
3081             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3082                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3083                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3084                                        -wd4554 \
3085                                        -wd4273 ;;
3086         esac
3087     done
3088 }
3089
3090 icl_flags(){
3091     msvc_common_flags "$@"
3092     for flag; do
3093         case $flag in
3094             # Despite what Intel's documentation says -Wall, which is supported
3095             # on Windows, does enable remarks so disable them here.
3096             -Wall)                echo $flag -Qdiag-disable:remark ;;
3097             -std=c99)             echo -Qstd=c99 ;;
3098         esac
3099     done
3100 }
3101
3102 pgi_flags(){
3103     for flag; do
3104         case $flag in
3105             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3106             -fomit-frame-pointer) echo -Mnoframe ;;
3107             -g)                   echo -gopt ;;
3108             *)                    echo $flag ;;
3109         esac
3110     done
3111 }
3112
3113 suncc_flags(){
3114     for flag; do
3115         case $flag in
3116             -march=*|-mcpu=*)
3117                 case "${flag#*=}" in
3118                     native)                   echo -xtarget=native       ;;
3119                     v9|niagara)               echo -xarch=sparc          ;;
3120                     ultrasparc)               echo -xarch=sparcvis       ;;
3121                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3122                     i586|pentium)             echo -xchip=pentium        ;;
3123                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3124                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3125                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3126                     pentium4*)          echo -xtarget=pentium4           ;;
3127                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3128                     *-sse3)             echo -xarch=sse3                 ;;
3129                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3130                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3131                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3132                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3133                     bdver*)                    echo -xarch=avx           ;;
3134                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3135                     k8|opteron|athlon64|athlon-fx)
3136                                                echo -xarch=sse2a         ;;
3137                     athlon*)                   echo -xarch=pentium_proa  ;;
3138                 esac
3139                 ;;
3140             -std=c99)             echo -xc99              ;;
3141             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3142             -fPIC)                echo -KPIC -xcode=pic32 ;;
3143             -W*,*)                echo $flag              ;;
3144             -f*-*|-W*|-mimpure-text)                      ;;
3145             -shared)              echo -G                 ;;
3146             *)                    echo $flag              ;;
3147         esac
3148     done
3149 }
3150
3151 tms470_flags(){
3152     for flag; do
3153         case $flag in
3154             -march=*|-mcpu=*)
3155                 case "${flag#*=}" in
3156                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3157                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3158                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3159                     armv6*|arm11*)          echo -mv=6   ;;
3160                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3161                                             echo -mv=5e  ;;
3162                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3163                 esac
3164                 ;;
3165             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3166             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3167             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3168             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3169             -msoft-float)   echo --float_support=vfplib       ;;
3170             -O[0-3]|-mf=*)  echo $flag                        ;;
3171             -g)             echo -g -mn                       ;;
3172             -pds=*)         echo $flag                        ;;
3173             -D*|-I*)        echo $flag                        ;;
3174             --gcc|--abi=*)  echo $flag                        ;;
3175             -me)            echo $flag                        ;;
3176         esac
3177     done
3178 }
3179
3180 probe_cc(){
3181     pfx=$1
3182     _cc=$2
3183
3184     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3185     unset _ld_o _ldflags _ld_lib _ld_path
3186     unset _depflags _DEPCMD _DEPFLAGS
3187     _flags_filter=echo
3188
3189     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3190         true # no-op to avoid reading stdin in following checks
3191     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3192         _type=llvm_gcc
3193         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3194         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3195         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3196         _cflags_speed='-O3'
3197         _cflags_size='-Os'
3198     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3199         _type=gcc
3200         gcc_version=$($_cc --version | head -n1)
3201         gcc_basever=$($_cc -dumpversion)
3202         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3203         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3204         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3205         if ! $_cc -dumpversion | grep -q '^2\.'; then
3206             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3207         fi
3208         _cflags_speed='-O3'
3209         _cflags_size='-Os'
3210     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3211         _type=icc
3212         _ident=$($_cc --version | head -n1)
3213         _depflags='-MMD'
3214         _cflags_speed='-O3'
3215         _cflags_size='-Os'
3216         _cflags_noopt='-O1'
3217     elif $_cc -v 2>&1 | grep -q xlc; then
3218         _type=xlc
3219         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3220         _cflags_speed='-O5'
3221         _cflags_size='-O5 -qcompact'
3222     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3223         _type=ccc
3224         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3225         _DEPFLAGS='-M'
3226         _cflags_speed='-fast'
3227         _cflags_size='-O1'
3228         _flags_filter=ccc_flags
3229     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3230         test -d "$sysroot" || die "No valid sysroot specified."
3231         _type=armcc
3232         _ident=$($_cc --vsn | head -n1)
3233         armcc_conf="$PWD/armcc.conf"
3234         $_cc --arm_linux_configure                 \
3235              --arm_linux_config_file="$armcc_conf" \
3236              --configure_sysroot="$sysroot"        \
3237              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3238              die "Error creating armcc configuration file."
3239         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3240         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3241         as_default="${cross_prefix}gcc"
3242         _depflags='-MMD'
3243         _cflags_speed='-O3'
3244         _cflags_size='-Os'
3245     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3246         _type=tms470
3247         _ident=$($_cc -version | head -n1 | tr -s ' ')
3248         _flags='--gcc --abi=eabi -me'
3249         _cc_e='-ppl -fe=$@'
3250         _cc_o='-fe=$@'
3251         _depflags='-ppa -ppd=$(@:.o=.d)'
3252         _cflags_speed='-O3 -mf=5'
3253         _cflags_size='-O3 -mf=2'
3254         _flags_filter=tms470_flags
3255     elif $_cc -v 2>&1 | grep -q clang; then
3256         _type=clang
3257         _ident=$($_cc --version | head -n1)
3258         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3259         _cflags_speed='-O3'
3260         _cflags_size='-Os'
3261     elif $_cc -V 2>&1 | grep -q Sun; then
3262         _type=suncc
3263         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3264         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3265         _DEPFLAGS='-xM1 -xc99'
3266         _ldflags='-std=c99'
3267         _cflags_speed='-O5'
3268         _cflags_size='-O5 -xspace'
3269         _flags_filter=suncc_flags
3270     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3271         _type=pathscale
3272         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3273         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3274         _cflags_speed='-O2'
3275         _cflags_size='-Os'
3276         _flags_filter='filter_out -Wdisabled-optimization'
3277     elif $_cc -v 2>&1 | grep -q Open64; then
3278         _type=open64
3279         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3280         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3281         _cflags_speed='-O2'
3282         _cflags_size='-Os'
3283         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3284     elif $_cc -V 2>&1 | grep -q Portland; then
3285         _type=pgi
3286         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3287         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3288         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3289         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3290         _cflags_noopt="-O"
3291         _flags_filter=pgi_flags
3292     elif $_cc 2>&1 | grep -q Microsoft; then
3293         _type=msvc
3294         _ident=$($cc 2>&1 | head -n1)
3295         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3296         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3297         _cflags_speed="-O2"
3298         _cflags_size="-O1"
3299         if $_cc 2>&1 | grep -q Linker; then
3300             _ld_o='-out:$@'
3301         else
3302             _ld_o='-Fe$@'
3303         fi
3304         _cc_o='-Fo$@'
3305         _cc_e='-P -Fi$@'
3306         _flags_filter=msvc_flags
3307         _ld_lib='lib%.a'
3308         _ld_path='-libpath:'
3309         _flags='-nologo'
3310         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3311         if [ $pfx = hostcc ]; then
3312             append _cflags -Dsnprintf=_snprintf
3313         fi
3314         disable stripping
3315     elif $_cc 2>&1 | grep -q Intel; then
3316         _type=icl
3317         _ident=$($cc 2>&1 | head -n1)
3318         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3319         # Not only is O3 broken on 13.x+ but it is slower on all previous
3320         # versions (tested) as well.
3321         _cflags_speed="-O2"
3322         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3323         if $_cc 2>&1 | grep -q Linker; then
3324             _ld_o='-out:$@'
3325         else
3326             _ld_o='-Fe$@'
3327         fi
3328         _cc_o='-Fo$@'
3329         _cc_e='-P'
3330         _flags_filter=icl_flags
3331         _ld_lib='lib%.a'
3332         _ld_path='-libpath:'
3333         # -Qdiag-error to make icl error when seeing certain unknown arguments
3334         _flags='-nologo -Qdiag-error:4044,10157'
3335         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3336         # with MSVC which enables it by default.
3337         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3338         if [ $pfx = hostcc ]; then
3339             append _cflags -Dsnprintf=_snprintf
3340         fi
3341     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3342         _type=cparser
3343         _ident=$($_cc --version | head -n1)
3344         _depflags='-MMD'
3345         _cflags_speed='-O4'
3346         _cflags_size='-O2'
3347         _flags_filter=cparser_flags
3348     fi
3349
3350     eval ${pfx}_type=\$_type
3351     eval ${pfx}_ident=\$_ident
3352 }
3353
3354 set_ccvars(){
3355     eval ${1}_C=\${_cc_c-\${${1}_C}}
3356     eval ${1}_E=\${_cc_e-\${${1}_E}}
3357     eval ${1}_O=\${_cc_o-\${${1}_O}}
3358
3359     if [ -n "$_depflags" ]; then
3360         eval ${1}_DEPFLAGS=\$_depflags
3361     else
3362         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3363         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3364         eval DEP${1}FLAGS=\$_flags
3365     fi
3366 }
3367
3368 probe_cc cc "$cc"
3369 cflags_filter=$_flags_filter
3370 cflags_speed=$_cflags_speed
3371 cflags_size=$_cflags_size
3372 cflags_noopt=$_cflags_noopt
3373 add_cflags $_flags $_cflags
3374 cc_ldflags=$_ldflags
3375 set_ccvars CC
3376
3377 probe_cc hostcc "$host_cc"
3378 host_cflags_filter=$_flags_filter
3379 add_host_cflags  $_flags $_cflags
3380 set_ccvars HOSTCC
3381
3382 test -n "$cc_type" && enable $cc_type ||
3383     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3384
3385 : ${as_default:=$cc}
3386 : ${dep_cc_default:=$cc}
3387 : ${ld_default:=$cc}
3388 : ${host_ld_default:=$host_cc}
3389 set_default ar as dep_cc ld host_ld windres
3390
3391 probe_cc as "$as"
3392 asflags_filter=$_flags_filter
3393 add_asflags $_flags $_cflags
3394 set_ccvars AS
3395
3396 probe_cc ld "$ld"
3397 ldflags_filter=$_flags_filter
3398 add_ldflags $_flags $_ldflags
3399 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3400 LD_O=${_ld_o-$LD_O}
3401 LD_LIB=${_ld_lib-$LD_LIB}
3402 LD_PATH=${_ld_path-$LD_PATH}
3403
3404 probe_cc hostld "$host_ld"
3405 host_ldflags_filter=$_flags_filter
3406 add_host_ldflags $_flags $_ldflags
3407 HOSTLD_O=${_ld_o-$HOSTLD_O}
3408
3409 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3410     probe_cc depcc "$dep_cc"
3411     CCDEP=${_DEPCMD:-$DEPCMD}
3412     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3413     DEPCCFLAGS=$_flags
3414 fi
3415
3416 if $ar 2>&1 | grep -q Microsoft; then
3417     arflags="-nologo"
3418     ar_o='-out:$@'
3419 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3420     arflags="rq"
3421     ar_o='$@'
3422 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3423     arflags='-Xany -r -c'
3424     ar_o='$@'
3425 else
3426     arflags="rc"
3427     ar_o='$@'
3428 fi
3429
3430 add_cflags $extra_cflags
3431 add_cxxflags $extra_cxxflags
3432 add_asflags $extra_cflags
3433
3434 if test -n "$sysroot"; then
3435     case "$cc_type" in
3436         gcc|llvm_gcc|clang)
3437             add_cppflags --sysroot="$sysroot"
3438             add_ldflags --sysroot="$sysroot"
3439 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3440             add_cppflags -isysroot "$sysroot"
3441             add_ldflags -isysroot "$sysroot"
3442         ;;
3443         tms470)
3444             add_cppflags -I"$sysinclude"
3445             add_ldflags  --sysroot="$sysroot"
3446         ;;
3447     esac
3448 fi
3449
3450 if test "$cpu" = host; then
3451     enabled cross_compile &&
3452         die "--cpu=host makes no sense when cross-compiling."
3453
3454     case "$cc_type" in
3455         gcc|llvm_gcc)
3456             check_native(){
3457                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3458                 sed -n "/cc1.*$1=/{
3459                             s/.*$1=\\([^ ]*\\).*/\\1/
3460                             p
3461                             q
3462                         }" $TMPE
3463             }
3464             cpu=$(check_native -march || check_native -mcpu)
3465         ;;
3466     esac
3467
3468     test "${cpu:-host}" = host &&
3469         die "--cpu=host not supported with compiler $cc"
3470 fi
3471
3472 # Deal with common $arch aliases
3473 case "$arch" in
3474     aarch64|arm64)
3475         arch="aarch64"
3476     ;;
3477     arm*|iPad*|iPhone*)
3478         arch="arm"
3479     ;;
3480     mips*|IP*)
3481         arch="mips"
3482     ;;
3483     parisc*|hppa*)
3484         arch="parisc"
3485     ;;
3486     "Power Macintosh"|ppc*|powerpc*)
3487         arch="ppc"
3488     ;;
3489     s390|s390x)
3490         arch="s390"
3491     ;;
3492     sh4|sh)
3493         arch="sh4"
3494     ;;
3495     sun4u|sparc*)
3496         arch="sparc"
3497     ;;
3498     tilegx|tile-gx)
3499         arch="tilegx"
3500     ;;
3501     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3502         arch="x86"
3503     ;;
3504 esac
3505
3506 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3507 enable $arch
3508
3509 # Add processor-specific flags
3510 if enabled aarch64; then
3511
3512     case $cpu in
3513         armv*)
3514             cpuflags="-march=$cpu"
3515         ;;
3516         *)
3517             cpuflags="-mcpu=$cpu"
3518         ;;
3519     esac
3520
3521 elif enabled alpha; then
3522
3523     cpuflags="-mcpu=$cpu"
3524
3525 elif enabled arm; then
3526
3527     check_arm_arch() {
3528         check_cpp_condition stddef.h \
3529             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3530             $cpuflags
3531     }
3532
3533     probe_arm_arch() {
3534         if   check_arm_arch 4;        then echo armv4;
3535         elif check_arm_arch 4T;       then echo armv4t;
3536         elif check_arm_arch 5;        then echo armv5;
3537         elif check_arm_arch 5E;       then echo armv5e;
3538         elif check_arm_arch 5T;       then echo armv5t;
3539         elif check_arm_arch 5TE;      then echo armv5te;
3540         elif check_arm_arch 5TEJ;     then echo armv5te;
3541         elif check_arm_arch 6;        then echo armv6;
3542         elif check_arm_arch 6J;       then echo armv6j;
3543         elif check_arm_arch 6K;       then echo armv6k;
3544         elif check_arm_arch 6Z;       then echo armv6z;
3545         elif check_arm_arch 6ZK;      then echo armv6zk;
3546         elif check_arm_arch 6T2;      then echo armv6t2;
3547         elif check_arm_arch 7;        then echo armv7;
3548         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3549         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3550         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3551         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3552         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3553         fi
3554     }
3555
3556     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3557
3558     case $cpu in
3559         armv*)
3560             cpuflags="-march=$cpu"
3561             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3562         ;;
3563         *)
3564             cpuflags="-mcpu=$cpu"
3565             case $cpu in
3566                 cortex-a*)                               subarch=armv7a  ;;
3567                 cortex-r*)                               subarch=armv7r  ;;
3568                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3569                 arm11*)                                  subarch=armv6   ;;
3570                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3571                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3572                 *)                             subarch=$(probe_arm_arch) ;;
3573             esac
3574         ;;
3575     esac
3576
3577     case "$subarch" in
3578         armv5t*)    enable fast_clz                ;;
3579         armv[6-8]*) enable fast_clz fast_unaligned ;;
3580     esac
3581
3582 elif enabled avr32; then
3583
3584     case $cpu in
3585         ap7[02]0[0-2])
3586             subarch="avr32_ap"
3587             cpuflags="-mpart=$cpu"
3588         ;;
3589         ap)
3590             subarch="avr32_ap"
3591             cpuflags="-march=$cpu"
3592         ;;
3593         uc3[ab]*)
3594             subarch="avr32_uc"
3595             cpuflags="-mcpu=$cpu"
3596         ;;
3597         uc)
3598             subarch="avr32_uc"
3599             cpuflags="-march=$cpu"
3600         ;;
3601     esac
3602
3603 elif enabled bfin; then
3604
3605     cpuflags="-mcpu=$cpu"
3606
3607 elif enabled mips; then
3608
3609     cpuflags="-march=$cpu"
3610
3611     case $cpu in
3612         24kc)
3613             disable mipsfpu
3614             disable mipsdspr1
3615             disable mipsdspr2
3616         ;;
3617         24kf*)
3618             disable mipsdspr1
3619             disable mipsdspr2
3620         ;;
3621         24kec|34kc|1004kc)
3622             disable mipsfpu
3623             disable mipsdspr2
3624         ;;
3625         24kef*|34kf*|1004kf*)
3626             disable mipsdspr2
3627         ;;
3628         74kc)
3629             disable mipsfpu
3630         ;;
3631     esac
3632
3633 elif enabled ppc; then
3634
3635     disable ldbrx
3636
3637     case $(tolower $cpu) in
3638         601|ppc601|powerpc601)
3639             cpuflags="-mcpu=601"
3640             disable altivec
3641         ;;
3642         603*|ppc603*|powerpc603*)
3643             cpuflags="-mcpu=603"
3644             disable altivec
3645         ;;
3646         604*|ppc604*|powerpc604*)
3647             cpuflags="-mcpu=604"
3648             disable altivec
3649         ;;
3650         g3|75*|ppc75*|powerpc75*)
3651             cpuflags="-mcpu=750"
3652             disable altivec
3653         ;;
3654         g4|745*|ppc745*|powerpc745*)
3655             cpuflags="-mcpu=7450"
3656         ;;
3657         74*|ppc74*|powerpc74*)
3658             cpuflags="-mcpu=7400"
3659         ;;
3660         g5|970|ppc970|powerpc970)
3661             cpuflags="-mcpu=970"
3662         ;;
3663         power[3-7]*)
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666         cell)
3667             cpuflags="-mcpu=cell"
3668             enable ldbrx
3669         ;;
3670         e500mc)
3671             cpuflags="-mcpu=e500mc"
3672             disable altivec
3673         ;;
3674         e500v2)
3675             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3676             disable altivec
3677             disable dcbzl
3678         ;;
3679         e500)
3680             cpuflags="-mcpu=8540 -mhard-float"
3681             disable altivec
3682             disable dcbzl
3683         ;;
3684     esac
3685
3686 elif enabled sparc; then
3687
3688     case $cpu in
3689         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3690             cpuflags="-mcpu=$cpu"
3691         ;;
3692         ultrasparc*|niagara[234])
3693             cpuflags="-mcpu=$cpu"
3694         ;;
3695     esac
3696
3697 elif enabled x86; then
3698
3699     case $cpu in
3700         i[345]86|pentium)
3701             cpuflags="-march=$cpu"
3702             disable mmx
3703         ;;
3704         # targets that do NOT support nopl and conditional mov (cmov)
3705         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3706             cpuflags="-march=$cpu"
3707             disable i686
3708         ;;
3709         # targets that do support nopl and conditional mov (cmov)
3710         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3711             cpuflags="-march=$cpu"
3712             enable i686
3713             enable fast_cmov
3714         ;;
3715         # targets that do support conditional mov but on which it's slow
3716         pentium4|pentium4m|prescott|nocona)
3717             cpuflags="-march=$cpu"
3718             enable i686
3719             disable fast_cmov
3720         ;;
3721     esac
3722
3723 fi
3724
3725 if [ "$cpu" != generic ]; then
3726     add_cflags  $cpuflags
3727     add_asflags $cpuflags
3728 fi
3729
3730 # compiler sanity check
3731 check_exec <<EOF
3732 int main(void){ return 0; }
3733 EOF
3734 if test "$?" != 0; then
3735     echo "$cc is unable to create an executable file."
3736     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3737         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3738         echo "Only do this if you know what cross compiling means."
3739     fi
3740     die "C compiler test failed."
3741 fi
3742
3743 add_cppflags -D_ISOC99_SOURCE
3744 add_cxxflags -D__STDC_CONSTANT_MACROS
3745 check_cflags -std=c99
3746 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3747 #include <stdlib.h>
3748 EOF
3749 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3750 #include <stdlib.h>
3751 EOF
3752
3753 add_host_cppflags -D_ISOC99_SOURCE
3754 check_host_cflags -std=c99
3755 check_host_cflags -Wall
3756 check_host_cflags -O3
3757
3758 check_64bit(){
3759     arch32=$1
3760     arch64=$2
3761     expr=$3
3762     check_code cc "" "int test[2*($expr) - 1]" &&
3763         subarch=$arch64 || subarch=$arch32
3764 }
3765
3766 case "$arch" in
3767     aarch64|alpha|ia64)
3768         spic=$shared
3769     ;;
3770     mips)
3771         check_64bit mips mips64 '_MIPS_SIM > 1'
3772         spic=$shared
3773     ;;
3774     parisc)
3775         check_64bit parisc parisc64 'sizeof(void *) > 4'
3776         spic=$shared
3777     ;;
3778     ppc)
3779         check_64bit ppc ppc64 'sizeof(void *) > 4'
3780         spic=$shared
3781     ;;
3782     s390)
3783         check_64bit s390 s390x 'sizeof(void *) > 4'
3784         spic=$shared
3785     ;;
3786     sparc)
3787         check_64bit sparc sparc64 'sizeof(void *) > 4'
3788         spic=$shared
3789     ;;
3790     x86)
3791         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3792         if test "$subarch" = "x86_64"; then
3793             spic=$shared
3794         fi
3795     ;;
3796     ppc)
3797         check_cc <<EOF && subarch="ppc64"
3798         int test[(int)sizeof(char*) - 7];
3799 EOF
3800     ;;
3801 esac
3802
3803 enable $subarch
3804 enabled spic && enable_weak pic
3805
3806 # OS specific
3807 case $target_os in
3808     aix)
3809         SHFLAGS=-shared
3810         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3811         enabled shared && add_ldflags -Wl,-brtl
3812         ;;
3813     haiku)
3814         prefix_default="/boot/common"
3815         network_extralibs="-lnetwork"
3816         host_libs=
3817         ;;
3818     sunos)
3819         SHFLAGS='-shared -Wl,-h,$$(@F)'
3820         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3821         network_extralibs="-lsocket -lnsl"
3822         # When using suncc to build, the Solaris linker will mark
3823         # an executable with each instruction set encountered by
3824         # the Solaris assembler.  As our libraries contain their own
3825         # guards for processor-specific code, instead suppress
3826         # generation of the HWCAPS ELF section on Solaris x86 only.
3827         enabled_all suncc x86 &&
3828             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3829             add_ldflags -Wl,-M,mapfile
3830         nm_default='nm -P -g'
3831         ;;
3832     netbsd)
3833         disable symver
3834         oss_indev_extralibs="-lossaudio"
3835         oss_outdev_extralibs="-lossaudio"
3836         enabled gcc || check_ldflags -Wl,-zmuldefs
3837         ;;
3838     openbsd|bitrig)
3839         disable symver
3840         SHFLAGS='-shared'
3841         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3842         SLIB_INSTALL_LINKS=
3843         oss_indev_extralibs="-lossaudio"
3844         oss_outdev_extralibs="-lossaudio"
3845         ;;
3846     dragonfly)
3847         disable symver
3848         ;;
3849     freebsd)
3850         ;;
3851     bsd/os)
3852         add_extralibs -lpoll -lgnugetopt
3853         strip="strip -d"
3854         ;;
3855     darwin)
3856         gas="gas-preprocessor.pl $cc"
3857         enabled ppc && add_asflags -force_cpusubtype_ALL
3858         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3859         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3860         strip="${strip} -x"
3861         add_ldflags -Wl,-dynamic,-search_paths_first
3862         SLIBSUF=".dylib"
3863         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3864         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3865         objformat="macho"
3866         enabled x86_64 && objformat="macho64"
3867         enabled_any pic shared ||
3868             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3869         ;;
3870     mingw32*)
3871         if test $target_os = "mingw32ce"; then
3872             disable network
3873         else
3874             target_os=mingw32
3875         fi
3876         LIBTARGET=i386
3877         if enabled x86_64; then
3878             LIBTARGET="i386:x86-64"
3879         elif enabled arm; then
3880             LIBTARGET=arm-wince
3881         fi
3882         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3883         check_ldflags -Wl,--nxcompat
3884         check_ldflags -Wl,--dynamicbase
3885         shlibdir_default="$bindir_default"
3886         SLIBPREF=""
3887         SLIBSUF=".dll"
3888         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3889         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3890         dlltool="${cross_prefix}dlltool"
3891         if check_cmd lib.exe -list; then
3892             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3893             if enabled x86_64; then
3894                 LIBTARGET=x64
3895             fi
3896         elif check_cmd $dlltool --version; then
3897             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3898         fi
3899         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3900         SLIB_INSTALL_LINKS=
3901         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3902         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3903         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3904         objformat="win32"
3905         ranlib=:
3906         enable dos_paths
3907         ;;
3908     win32|win64)
3909         disable symver
3910         if enabled shared; then
3911             # Link to the import library instead of the normal static library
3912             # for shared libs.
3913             LD_LIB='%.lib'
3914             # Cannot build both shared and static libs with MSVC or icl.
3915             disable static
3916         fi
3917         shlibdir_default="$bindir_default"
3918         SLIBPREF=""
3919         SLIBSUF=".dll"
3920         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3921         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3922         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3923         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3924         SLIB_INSTALL_LINKS=
3925         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3926         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3927         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3928         objformat="win32"
3929         ranlib=:
3930         enable dos_paths
3931         ;;
3932     cygwin*)
3933         target_os=cygwin
3934         shlibdir_default="$bindir_default"
3935         SLIBPREF="cyg"
3936         SLIBSUF=".dll"
3937         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3938         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3939         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3940         SLIB_INSTALL_LINKS=
3941         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3942         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3943         objformat="win32"
3944         enable dos_paths
3945         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3946         ;;
3947     *-dos|freedos|opendos)
3948         network_extralibs="-lsocket"
3949         objformat="coff"
3950         enable dos_paths
3951         add_cppflags -U__STRICT_ANSI__
3952         ;;
3953     linux)
3954         enable dv1394
3955         ;;
3956     irix*)
3957         target_os=irix
3958         ranlib="echo ignoring ranlib"
3959         ;;
3960     os/2*)
3961         strip="lxlite -CS"
3962         ln_s="cp -f"
3963         objformat="aout"
3964         add_cppflags -D_GNU_SOURCE
3965         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3966         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3967         LIBSUF="_s.a"
3968         SLIBPREF=""
3969         SLIBSUF=".dll"
3970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3972         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3973             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3974             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3975             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3976             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3977             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3978         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3979             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3980         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3981         enable dos_paths
3982         enable_weak os2threads
3983         ;;
3984     gnu/kfreebsd)
3985         add_cppflags -D_BSD_SOURCE
3986         ;;
3987     gnu)
3988         ;;
3989     qnx)
3990         add_cppflags -D_QNX_SOURCE
3991         network_extralibs="-lsocket"
3992         ;;
3993     symbian)
3994         SLIBSUF=".dll"
3995         enable dos_paths
3996         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3997         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3998         add_ldflags -Wl,--target1-abs,--no-undefined \
3999                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4000                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4001         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4002                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4003                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4004         ;;
4005     osf1)
4006         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4007         ;;
4008     minix)
4009         ;;
4010     plan9)
4011         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4012                      -D_REENTRANT_SOURCE        \
4013                      -D_RESEARCH_SOURCE         \
4014                      -DFD_SETSIZE=96            \
4015                      -DHAVE_SOCK_OPTS
4016         add_compat strtod.o strtod=avpriv_strtod
4017         network_extralibs='-lbsd'
4018         exeobjs=compat/plan9/main.o
4019         disable ffserver
4020         cp_f='cp'
4021         ;;
4022     none)
4023         ;;
4024     *)
4025         die "Unknown OS '$target_os'."
4026         ;;
4027 esac
4028
4029 # determine libc flavour
4030
4031 probe_libc(){
4032     pfx=$1
4033     pfx_no_=${pfx%_}
4034     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4035     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4036         eval ${pfx}libc_type=uclibc
4037         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4038     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4039         eval ${pfx}libc_type=glibc
4040         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4041     # MinGW headers can be installed on Cygwin, so check for newlib first.
4042     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4043         eval ${pfx}libc_type=newlib
4044         add_${pfx}cppflags -U__STRICT_ANSI__
4045     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4046     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4047         eval ${pfx}libc_type=mingw64
4048         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4049             add_compat msvcrt/snprintf.o
4050             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4051         fi
4052         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4053         eval test \$${pfx_no_}cc_type = "gcc" &&
4054             add_${pfx}cppflags -D__printf__=__gnu_printf__
4055     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4056          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4057         eval ${pfx}libc_type=mingw32
4058         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4059             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4060             die "ERROR: MinGW32 runtime version must be >= 3.15."
4061         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4062         eval test \$${pfx_no_}cc_type = "gcc" &&
4063             add_${pfx}cppflags -D__printf__=__gnu_printf__
4064     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4065         eval ${pfx}libc_type=msvcrt
4066         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4067         # 0x601 by default unless something else is set by the user.
4068         # This can easily lead to us detecting functions only present
4069         # in such new versions and producing binaries requiring windows 7.0.
4070         # Therefore explicitly set the default to XP unless the user has
4071         # set something else on the command line.
4072         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4073             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4074     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4075         eval ${pfx}libc_type=klibc
4076     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4077         eval ${pfx}libc_type=bionic
4078     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4079         eval ${pfx}libc_type=solaris
4080         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4081     fi
4082 }
4083
4084 probe_libc
4085 test -n "$libc_type" && enable libc_$libc_type
4086 probe_libc host_
4087 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4088
4089 case $libc_type in
4090     bionic)
4091         add_compat strtod.o strtod=avpriv_strtod
4092         ;;
4093     msvcrt)
4094         add_compat strtod.o strtod=avpriv_strtod
4095         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4096                                      _snprintf=avpriv_snprintf  \
4097                                      vsnprintf=avpriv_vsnprintf
4098         ;;
4099 esac
4100
4101 # hacks for compiler/libc/os combinations
4102
4103 if enabled_all tms470 libc_glibc; then
4104     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4105     add_cppflags -D__USER_LABEL_PREFIX__=
4106     add_cppflags -D__builtin_memset=memset
4107     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4108     add_cflags   -pds=48    # incompatible redefinition of macro
4109 fi
4110
4111 if enabled_all ccc libc_glibc; then
4112     add_ldflags -Wl,-z,now  # calls to libots crash without this
4113 fi
4114
4115 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4116     add_cppflags '-I\$(SRC_PATH)/compat/float'
4117
4118 esc(){
4119     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4120 }
4121
4122 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4123
4124 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4125
4126 set_default $PATHS_LIST
4127 set_default nm
4128
4129 # we need to build at least one lib type
4130 if ! enabled_any static shared; then
4131     cat <<EOF
4132 At least one library type must be built.
4133 Specify --enable-static to build the static libraries or --enable-shared to
4134 build the shared libraries as well. To only build the shared libraries specify
4135 --disable-static in addition to --enable-shared.
4136 EOF
4137     exit 1;
4138 fi
4139
4140 # backward compatibility layer for incompatible_libav/fork_abi
4141 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4142 enabled incompatible_libav_abi && enable incompatible_fork_abi
4143
4144 die_license_disabled() {
4145     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4146 }
4147
4148 die_license_disabled_gpl() {
4149     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4150 }
4151
4152 die_license_disabled gpl frei0r
4153 die_license_disabled gpl libcdio
4154 die_license_disabled gpl libutvideo
4155 die_license_disabled gpl libvidstab
4156 die_license_disabled gpl libx264
4157 die_license_disabled gpl libx265
4158 die_license_disabled gpl libxavs
4159 die_license_disabled gpl libxvid
4160 die_license_disabled gpl libzvbi
4161 die_license_disabled gpl x11grab
4162
4163 die_license_disabled nonfree libaacplus
4164 die_license_disabled nonfree libfaac
4165 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4166 enabled gpl && die_license_disabled_gpl nonfree openssl
4167
4168 die_license_disabled version3 libopencore_amrnb
4169 die_license_disabled version3 libopencore_amrwb
4170 die_license_disabled version3 libvo_aacenc
4171 die_license_disabled version3 libvo_amrwbenc
4172
4173 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4174
4175 disabled optimizations || check_cflags -fomit-frame-pointer
4176
4177 enable_weak_pic() {
4178     disabled pic && return
4179     enable pic
4180     add_cppflags -DPIC
4181     case "$target_os" in
4182     mingw*|cygwin*)
4183         ;;
4184     *)
4185         add_cflags -fPIC
4186         ;;
4187     esac
4188     add_asflags  -fPIC
4189 }
4190
4191 enabled pic && enable_weak_pic
4192
4193 check_cc <<EOF || die "Symbol mangling check failed."
4194 int ff_extern;
4195 EOF
4196 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4197 extern_prefix=${sym%%ff_extern*}
4198
4199 check_cc <<EOF && enable_weak inline_asm
4200 void foo(void) { __asm__ volatile ("" ::); }
4201 EOF
4202
4203 _restrict=
4204 for restrict_keyword in restrict __restrict__ __restrict; do
4205     check_cc <<EOF && _restrict=$restrict_keyword && break
4206 void foo(char * $restrict_keyword p);
4207 EOF
4208 done
4209
4210 check_cc <<EOF && enable pragma_deprecated
4211 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4212 EOF
4213
4214 check_cc <<EOF && enable attribute_packed
4215 struct { int x; } __attribute__((packed)) x;
4216 EOF
4217
4218 check_cc <<EOF && enable attribute_may_alias
4219 union { int x; } __attribute__((may_alias)) x;
4220 EOF
4221
4222 check_cc <<EOF || die "endian test failed"
4223 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4224 EOF
4225 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4226
4227 check_inline_asm inline_asm_labels '"1:\n"'
4228
4229 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4230
4231 if enabled aarch64; then
4232     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4233     # internal assembler in clang 3.3 does not support this instruction
4234     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4235     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4236
4237     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4238
4239 elif enabled alpha; then
4240
4241     check_cflags -mieee
4242
4243 elif enabled arm; then
4244
4245     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4246 float func(float a, float b){ return a+b; }
4247 EOF
4248
4249     enabled thumb && check_cflags -mthumb || check_cflags -marm
4250     nogas=die
4251
4252     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4253         enable vfp_args
4254     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4255         case "${cross_prefix:-$cc}" in
4256             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4257             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4258 __asm__ (".eabi_attribute 28, 1");
4259 int main(void) { return 0; }
4260 EOF
4261         esac
4262         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4263     fi
4264
4265     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4266     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4267     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4268     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4269     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4270     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4271
4272     [ $target_os = linux ] ||
4273         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4274             $ARCH_EXT_LIST_ARM
4275
4276     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4277
4278     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4279
4280 elif enabled mips; then
4281
4282     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4283     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4284      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4285     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4286      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4287     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4288      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4289     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4290      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4291
4292 elif enabled parisc; then
4293
4294     if enabled gcc; then
4295         case $($cc -dumpversion) in
4296             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4297         esac
4298     fi
4299
4300 elif enabled ppc; then
4301
4302     enable local_aligned_8 local_aligned_16
4303
4304     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4305     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4306     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4307     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4308
4309     # AltiVec flags: The FSF version of GCC differs from the Apple version
4310     if enabled altivec; then
4311         if ! enabled_any pic ppc64; then
4312             nogas=warn
4313         fi
4314         check_cflags -maltivec -mabi=altivec &&
4315         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4316         check_cflags -faltivec
4317
4318         # check if our compiler supports Motorola AltiVec C API
4319         check_cc <<EOF || disable altivec
4320 $inc_altivec_h
4321 int main(void) {
4322     vector signed int v1 = (vector signed int) { 0 };
4323     vector signed int v2 = (vector signed int) { 1 };
4324     v1 = vec_add(v1, v2);
4325     return 0;
4326 }
4327 EOF
4328
4329         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4330     fi
4331
4332 elif enabled x86; then
4333
4334     check_builtin rdtsc    intrin.h   "__rdtsc()"
4335     check_builtin mm_empty mmintrin.h "_mm_empty()"
4336
4337     enable local_aligned_8 local_aligned_16
4338
4339     # check whether EBP is available on x86
4340     # As 'i' is stored on the stack, this program will crash
4341     # if the base pointer is used to access it because the
4342     # base pointer is cleared in the inline assembly code.
4343     check_exec_crash <<EOF && enable ebp_available
4344 volatile int i=0;
4345 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4346 return i;
4347 EOF
4348
4349     # check whether EBX is available on x86
4350     check_inline_asm ebx_available '""::"b"(0)' &&
4351         check_inline_asm ebx_available '"":::"%ebx"'
4352
4353     # check whether xmm clobbers are supported
4354     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4355
4356     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4357         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4358
4359     # check whether binutils is new enough to compile SSSE3/MMXEXT
4360     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4361     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4362
4363     if ! disabled_any asm mmx yasm; then
4364         if check_cmd $yasmexe --version; then
4365             enabled x86_64 && yasm_extra="-m amd64"
4366             yasm_debug="-g dwarf2"
4367         elif check_cmd nasm -v; then
4368             yasmexe=nasm
4369             yasm_debug="-g -F dwarf"
4370             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4371         fi
4372
4373         YASMFLAGS="-f $objformat $yasm_extra"
4374         enabled pic               && append YASMFLAGS "-DPIC"
4375         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4376         case "$objformat" in
4377             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4378         esac
4379
4380         check_yasm "movbe ecx, [5]" && enable yasm ||
4381             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4382         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4383         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4384         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4385         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4386         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4387         check_yasm "CPU amdnop" || disable cpunop
4388     fi
4389
4390     case "$cpu" in
4391         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4392             disable fast_clz
4393         ;;
4394     esac
4395
4396 fi
4397
4398 if enabled asm; then
4399     as=${gas:=$as}
4400     check_as <<EOF && enable gnu_as || \
4401         $nogas "GNU assembler not found, install gas-preprocessor"
4402 .macro m n
4403 \n: .int 0
4404 .endm
4405 m x
4406 EOF
4407 fi
4408
4409 check_ldflags -Wl,--as-needed
4410
4411 if check_func dlopen; then
4412     ldl=
4413 elif check_func dlopen -ldl; then
4414     ldl=-ldl
4415 fi
4416
4417 if ! disabled network; then
4418     check_func getaddrinfo $network_extralibs
4419     check_func getservbyport $network_extralibs
4420     check_func inet_aton $network_extralibs
4421
4422     check_type netdb.h "struct addrinfo"
4423     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4424     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4425     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4426     check_type poll.h "struct pollfd"
4427     check_type netinet/sctp.h "struct sctp_event_subscribe"
4428     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4429     check_type netinet/in.h "struct sockaddr_in6"
4430     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4431     check_type "sys/types.h sys/socket.h" socklen_t
4432
4433     # Prefer arpa/inet.h over winsock2
4434     if check_header arpa/inet.h ; then
4435         check_func closesocket
4436     elif check_header winsock2.h ; then
4437         check_func_headers winsock2.h closesocket -lws2 &&
4438             network_extralibs="-lws2" ||
4439         { check_func_headers winsock2.h closesocket -lws2_32 &&
4440             network_extralibs="-lws2_32"; } || disable winsock2_h network
4441         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4442
4443         check_type ws2tcpip.h socklen_t
4444         check_type ws2tcpip.h "struct addrinfo"
4445         check_type ws2tcpip.h "struct group_source_req"
4446         check_type ws2tcpip.h "struct ip_mreq_source"
4447         check_type ws2tcpip.h "struct ipv6_mreq"
4448         check_type winsock2.h "struct pollfd"
4449         check_struct winsock2.h "struct sockaddr" sa_len
4450         check_type ws2tcpip.h "struct sockaddr_in6"
4451         check_type ws2tcpip.h "struct sockaddr_storage"
4452     else
4453         disable network
4454     fi
4455 fi
4456
4457 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4458 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4459 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4460 check_builtin sarestart signal.h "SA_RESTART"
4461 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4462
4463 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4464 check_func  ${malloc_prefix}memalign            && enable memalign
4465 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4466
4467 check_func  access
4468 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4469 check_func  fcntl
4470 check_func  fork
4471 check_func  gethrtime
4472 check_func  getopt
4473 check_func  getrusage
4474 check_func  gettimeofday
4475 check_func  isatty
4476 check_func  localtime_r
4477 check_func  mach_absolute_time
4478 check_func  mkstemp
4479 check_func  mmap
4480 check_func  mprotect
4481 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4482 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4483 check_func  sched_getaffinity
4484 check_func  setrlimit
4485 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4486 check_func  strerror_r
4487 check_func  sysconf
4488 check_func  sysctl
4489 check_func  usleep
4490
4491 check_func_headers conio.h kbhit
4492 check_func_headers io.h setmode
4493 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4494 check_func_headers stdlib.h getenv
4495
4496 check_func_headers windows.h GetProcessAffinityMask
4497 check_func_headers windows.h GetProcessTimes
4498 check_func_headers windows.h GetSystemTimeAsFileTime
4499 check_func_headers windows.h MapViewOfFile
4500 check_func_headers windows.h PeekNamedPipe
4501 check_func_headers windows.h SetConsoleTextAttribute
4502 check_func_headers windows.h Sleep
4503 check_func_headers windows.h VirtualAlloc
4504 check_func_headers glob.h glob
4505 enabled xlib &&
4506     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4507
4508 check_header cl/cl.h
4509 check_header direct.h
4510 check_header dlfcn.h
4511 check_header dxva.h
4512 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4513 check_header io.h
4514 check_header libcrystalhd/libcrystalhd_if.h
4515 check_header mach/mach_time.h
4516 check_header malloc.h
4517 check_header poll.h
4518 check_header sys/mman.h
4519 check_header sys/param.h
4520 check_header sys/resource.h
4521 check_header sys/select.h
4522 check_header sys/time.h
4523 check_header sys/un.h
4524 check_header termios.h
4525 check_header unistd.h
4526 check_header vdpau/vdpau.h
4527 check_header vdpau/vdpau_x11.h
4528 check_header VideoDecodeAcceleration/VDADecoder.h
4529 check_header windows.h
4530 check_header X11/extensions/XvMClib.h
4531 check_header asm/types.h
4532
4533 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4534 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4535 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4536
4537 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4538
4539 if ! disabled w32threads && ! enabled pthreads; then
4540     check_func_headers "windows.h process.h" _beginthreadex &&
4541         enable w32threads || disable w32threads
4542 fi
4543
4544 # check for some common methods of building with pthread support
4545 # do this before the optional library checks as some of them require pthreads
4546 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4547     enable pthreads
4548     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4549         add_cflags -pthread
4550         add_extralibs -pthread
4551     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4552         add_cflags -pthreads
4553         add_extralibs -pthreads
4554     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4555         add_extralibs -lpthreadGC2
4556     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4557         :
4558     elif ! check_func pthread_join && ! check_func pthread_create; then
4559         disable pthreads
4560     fi
4561     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4562 fi
4563
4564
4565 if enabled pthreads; then
4566   check_func pthread_cancel
4567 fi
4568
4569 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4570 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4571
4572 check_lib math.h sin -lm && LIBM="-lm"
4573 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4574
4575 atan2f_args=2
4576 ldexpf_args=2
4577 powf_args=2
4578
4579 for func in $MATH_FUNCS; do
4580     eval check_mathfunc $func \${${func}_args:-1}
4581 done
4582
4583 # these are off by default, so fail if requested and not available
4584 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4585 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4586                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4587                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4588 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4589 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4590 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4591 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4592 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4593 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4594 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4595 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4596 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4597 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4598                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4599                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4600 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4601 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4602 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4603 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"
4604 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4605 enabled libfreetype       && require_libfreetype
4606 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4607 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4608                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4609                                done || die "ERROR: libgsm not found"; }
4610 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4611 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4612 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4613 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4614 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4615 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4616 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4617 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4618                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4619                                die "ERROR: libopenjpeg not found"; }
4620 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4621 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4622 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4623 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4624 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4625 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4626 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4627 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4628 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4629 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4630     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4631     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4632 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4633 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4634                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4635                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4636 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4637 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4638 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4639 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4640 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4641 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4642 enabled libvpx            && {
4643     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4644                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4645     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 ||
4646                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4647     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4648     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; } }
4649 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4650 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4651 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4652                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4653                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4654 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4655                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4656                                die "ERROR: libx265 version must be >= 13."; }
4657 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4658 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4659 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4660 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4661 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4662                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4663                                die "ERROR: openal not found"; } &&
4664                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4665                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4666 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4667                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4668                                die "ERROR: opencl not found"; } &&
4669                              { ! enabled_any w32threads os2threads ||
4670                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4671                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4672                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4673                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4674 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4675                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4676                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4677                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4678                                die "ERROR: opengl not found."
4679                              }
4680 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4681                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4682                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4683                                die "ERROR: openssl not found"; }
4684 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4685
4686 if enabled gnutls; then
4687     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4688     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4689 fi
4690
4691 # libdc1394 check
4692 if enabled libdc1394; then
4693     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4694         enable libdc1394_2; } ||
4695     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4696         enable libdc1394_1; } ||
4697     die "ERROR: No version of libdc1394 found "
4698 fi
4699
4700 SDL_CONFIG="${cross_prefix}sdl-config"
4701 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4702     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4703     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4704     enable sdl
4705 else
4706   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4707     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4708     sdl_libs=$("${SDL_CONFIG}" --libs)
4709     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4710     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4711     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4712     enable sdl
4713   fi
4714 fi
4715 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4716
4717 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4718 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4719 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4720 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4721 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4722
4723 check_header linux/fb.h
4724 check_header linux/videodev.h
4725 check_header linux/videodev2.h
4726 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4727
4728 check_header sys/videoio.h
4729
4730 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4731 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4732 # w32api 3.12 had it defined wrong
4733 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4734
4735 check_type "dshow.h" IBaseFilter
4736
4737 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4738 { check_header dev/bktr/ioctl_meteor.h &&
4739   check_header dev/bktr/ioctl_bt848.h; } ||
4740 { check_header machine/ioctl_meteor.h &&
4741   check_header machine/ioctl_bt848.h; } ||
4742 { check_header dev/video/meteor/ioctl_meteor.h &&
4743   check_header dev/video/bktr/ioctl_bt848.h; } ||
4744 check_header dev/ic/bt8xx.h
4745
4746 check_header sndio.h
4747 if check_struct sys/soundcard.h audio_buf_info bytes; then
4748     enable_safe sys/soundcard.h
4749 else
4750     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4751     #include <sys/soundcard.h>
4752     audio_buf_info abc;
4753 EOF
4754 fi
4755 check_header soundcard.h
4756
4757 enabled_any alsa_indev alsa_outdev &&
4758     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4759
4760 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4761     check_func jack_port_get_latency_range -ljack
4762
4763 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4764
4765 if enabled libcdio; then
4766     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4767     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4768     die "ERROR: libcdio-paranoia not found"
4769 fi
4770
4771 enabled xlib &&
4772     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4773
4774 enabled x11grab                                           &&
4775 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4776 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4777 { enabled xlib || die "ERROR: Xlib not found"; }
4778
4779 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4780
4781 enabled vaapi &&
4782     check_lib va/va.h vaInitialize -lva ||
4783     disable vaapi
4784
4785 enabled vdpau &&
4786     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4787     disable vdpau
4788
4789 enabled vdpau && enabled xlib &&
4790     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4791     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4792     enable vdpau_x11
4793
4794 # Funny iconv installations are not unusual, so check it after all flags have been set
4795 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4796
4797 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4798
4799 # add some useful compiler flags if supported
4800 check_cflags -Wdeclaration-after-statement
4801 check_cflags -Wall
4802 check_cflags -Wdisabled-optimization
4803 check_cflags -Wpointer-arith
4804 check_cflags -Wredundant-decls
4805 check_cflags -Wwrite-strings
4806 check_cflags -Wtype-limits
4807 check_cflags -Wundef
4808 check_cflags -Wmissing-prototypes
4809 check_cflags -Wno-pointer-to-int-cast
4810 check_cflags -Wstrict-prototypes
4811 check_cflags -Wempty-body
4812 enabled extra_warnings && check_cflags -Winline
4813
4814 check_disable_warning(){
4815     warning_flag=-W${1#-Wno-}
4816     test_cflags $warning_flag && add_cflags $1
4817 }
4818
4819 check_disable_warning -Wno-parentheses
4820 check_disable_warning -Wno-switch
4821 check_disable_warning -Wno-format-zero-length
4822 check_disable_warning -Wno-pointer-sign
4823
4824 # add some linker flags
4825 check_ldflags -Wl,--warn-common
4826 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4827 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4828 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4829
4830 # add some strip flags
4831 # -wN '..@*' is more selective than -x, but not available everywhere.
4832 check_stripflags -wN \'..@*\' || check_stripflags -x
4833
4834 enabled neon_clobber_test &&
4835     check_ldflags -Wl,--wrap,avcodec_open2              \
4836                   -Wl,--wrap,avcodec_decode_audio4      \
4837                   -Wl,--wrap,avcodec_decode_video2      \
4838                   -Wl,--wrap,avcodec_decode_subtitle2   \
4839                   -Wl,--wrap,avcodec_encode_audio2      \
4840                   -Wl,--wrap,avcodec_encode_video2      \
4841                   -Wl,--wrap,avcodec_encode_subtitle    \
4842                   -Wl,--wrap,swr_convert                \
4843                   -Wl,--wrap,avresample_convert ||
4844     disable neon_clobber_test
4845
4846 enabled xmm_clobber_test &&
4847     check_ldflags -Wl,--wrap,avcodec_open2              \
4848                   -Wl,--wrap,avcodec_decode_audio4      \
4849                   -Wl,--wrap,avcodec_decode_video2      \
4850                   -Wl,--wrap,avcodec_decode_subtitle2   \
4851                   -Wl,--wrap,avcodec_encode_audio2      \
4852                   -Wl,--wrap,avcodec_encode_video       \
4853                   -Wl,--wrap,avcodec_encode_video2      \
4854                   -Wl,--wrap,avcodec_encode_subtitle    \
4855                   -Wl,--wrap,swr_convert                \
4856                   -Wl,--wrap,avresample_convert         \
4857                   -Wl,--wrap,sws_scale ||
4858     disable xmm_clobber_test
4859
4860 echo "X{};" > $TMPV
4861 if test_ldflags -Wl,--version-script,$TMPV; then
4862     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4863     check_cc <<EOF && enable symver_asm_label
4864 void ff_foo(void) __asm__ ("av_foo@VERSION");
4865 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4866 EOF
4867     check_cc <<EOF && enable symver_gnu_asm
4868 __asm__(".symver ff_foo,av_foo@VERSION");
4869 void ff_foo(void) {}
4870 EOF
4871 fi
4872
4873 if [ -z "$optflags" ]; then
4874     if enabled small; then
4875         optflags=$cflags_size
4876     elif enabled optimizations; then
4877         optflags=$cflags_speed
4878     else
4879         optflags=$cflags_noopt
4880     fi
4881 fi
4882
4883 check_optflags(){
4884     check_cflags "$@"
4885     enabled lto && check_ldflags "$@"
4886 }
4887
4888
4889 if enabled lto; then
4890     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4891     check_cflags  -flto
4892     check_ldflags -flto $cpuflags
4893 fi
4894
4895 check_optflags $optflags
4896 check_optflags -fno-math-errno
4897 check_optflags -fno-signed-zeros
4898
4899 enabled ftrapv && check_cflags -ftrapv
4900
4901 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4902 int x;
4903 EOF
4904
4905
4906 if enabled icc; then
4907     # Just warnings, no remarks
4908     check_cflags -w1
4909     # -wd: Disable following warnings
4910     # 144, 167, 556: -Wno-pointer-sign
4911     # 188: enumerated type mixed with another type
4912     # 1292: attribute "foo" ignored
4913     # 1419: external declaration in primary source file
4914     # 10006: ignoring unknown option -fno-signed-zeros
4915     # 10148: ignoring unknown option -Wno-parentheses
4916     # 10156: ignoring option '-W'; no argument required
4917     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4918     # 11030: Warning unknown option --as-needed
4919     # 10156: ignoring option '-export'; no argument required
4920     check_ldflags -wd10156,11030
4921     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4922     enable ebp_available
4923     if enabled x86_32; then
4924         icc_version=$($cc -dumpversion)
4925         test ${icc_version%%.*} -ge 11 &&
4926             check_cflags -falign-stack=maintain-16-byte ||
4927             disable aligned_stack
4928     fi
4929 elif enabled ccc; then
4930     # disable some annoying warnings
4931     add_cflags -msg_disable bitnotint
4932     add_cflags -msg_disable mixfuncvoid
4933     add_cflags -msg_disable nonstandcast
4934     add_cflags -msg_disable unsupieee
4935 elif enabled gcc; then
4936     check_optflags -fno-tree-vectorize
4937     check_cflags -Werror=implicit-function-declaration
4938     check_cflags -Werror=missing-prototypes
4939     check_cflags -Werror=return-type
4940     check_cflags -Werror=vla
4941     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4942 elif enabled llvm_gcc; then
4943     check_cflags -mllvm -stack-alignment=16
4944 elif enabled clang; then
4945     check_cflags -mllvm -stack-alignment=16
4946     check_cflags -Qunused-arguments
4947     check_cflags -Werror=implicit-function-declaration
4948     check_cflags -Werror=missing-prototypes
4949     check_cflags -Werror=return-type
4950 elif enabled cparser; then
4951     add_cflags -Wno-missing-variable-declarations
4952     add_cflags -Wno-empty-statement
4953 elif enabled armcc; then
4954     # 2523: use of inline assembler is deprecated
4955     add_cflags -W${armcc_opt},--diag_suppress=2523
4956     add_cflags -W${armcc_opt},--diag_suppress=1207
4957     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4958     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4959     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4960     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4961 elif enabled tms470; then
4962     add_cflags -pds=824 -pds=837
4963     disable inline_asm
4964 elif enabled pathscale; then
4965     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4966 elif enabled_any msvc icl; then
4967     enabled x86_32 && disable aligned_stack
4968     enabled_all x86_32 debug && add_cflags -Oy-
4969     enabled debug && add_ldflags -debug
4970     enable pragma_deprecated
4971     if enabled icl; then
4972         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4973         # (correctly) on icl 13.x.
4974         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4975             add_cflags -Qansi-alias
4976         # icl will pass the inline asm tests but inline asm is currently
4977         # not supported (build will fail)
4978         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4979         disable inline_asm
4980     fi
4981 fi
4982
4983 case $as_type in
4984     clang)
4985         add_asflags -Qunused-arguments
4986     ;;
4987 esac
4988
4989 case $ld_type in
4990     clang)
4991         check_ldflags -Qunused-arguments
4992     ;;
4993 esac
4994
4995 case $target_os in
4996     osf1)
4997         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4998     ;;
4999     plan9)
5000         add_cppflags -Dmain=plan9_main
5001     ;;
5002 esac
5003
5004 enable frame_thread_encoder
5005
5006 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5007
5008 check_deps $CONFIG_LIST       \
5009            $CONFIG_EXTRA      \
5010            $HAVE_LIST         \
5011            $ALL_COMPONENTS    \
5012
5013 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"
5014
5015
5016 if test $target_os = "haiku"; then
5017     disable memalign
5018     disable posix_memalign
5019 fi
5020
5021 ! enabled_any memalign posix_memalign aligned_malloc &&
5022     enabled_any $need_memalign && enable memalign_hack
5023
5024 # add_dep lib dep
5025 # -> enable ${lib}_deps_${dep}
5026 # -> add $dep to ${lib}_deps only once
5027 add_dep() {
5028     lib=$1
5029     dep=$2
5030     enabled "${lib}_deps_${dep}" && return 0
5031     enable  "${lib}_deps_${dep}"
5032     prepend "${lib}_deps" $dep
5033 }
5034
5035 # merge deps lib components
5036 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5037 merge_deps() {
5038     lib=$1
5039     shift
5040     for comp in $*; do
5041         enabled $comp || continue
5042         eval "dep=\"\$${comp}_deps\""
5043         for d in $dep; do
5044             add_dep $lib $d
5045         done
5046     done
5047 }
5048
5049 merge_deps libavfilter $FILTER_LIST
5050
5051 for thread in $THREADS_LIST; do
5052     if enabled $thread; then
5053         test -n "$thread_type" &&
5054             die "ERROR: Only one thread type must be selected." ||
5055             thread_type="$thread"
5056     fi
5057 done
5058
5059 echo "install prefix            $prefix"
5060 echo "source path               $source_path"
5061 echo "C compiler                $cc"
5062 echo "C library                 $libc_type"
5063 if test "$host_cc" != "$cc"; then
5064     echo "host C compiler           $host_cc"
5065     echo "host C library            $host_libc_type"
5066 fi
5067 echo "ARCH                      $arch ($cpu)"
5068 if test "$build_suffix" != ""; then
5069     echo "build suffix              $build_suffix"
5070 fi
5071 if test "$progs_suffix" != ""; then
5072     echo "progs suffix              $progs_suffix"
5073 fi
5074 if test "$extra_version" != ""; then
5075     echo "version string suffix     $extra_version"
5076 fi
5077 echo "big-endian                ${bigendian-no}"
5078 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5079 if enabled x86; then
5080     echo "${yasmexe}                      ${yasm-no}"
5081     echo "MMX enabled               ${mmx-no}"
5082     echo "MMXEXT enabled            ${mmxext-no}"
5083     echo "3DNow! enabled            ${amd3dnow-no}"
5084     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5085     echo "SSE enabled               ${sse-no}"
5086     echo "SSSE3 enabled             ${ssse3-no}"
5087     echo "AVX enabled               ${avx-no}"
5088     echo "XOP enabled               ${xop-no}"
5089     echo "FMA3 enabled              ${fma3-no}"
5090     echo "FMA4 enabled              ${fma4-no}"
5091     echo "i686 features enabled     ${i686-no}"
5092     echo "CMOV is fast              ${fast_cmov-no}"
5093     echo "EBX available             ${ebx_available-no}"
5094     echo "EBP available             ${ebp_available-no}"
5095 fi
5096 if enabled aarch64; then
5097     echo "NEON enabled              ${neon-no}"
5098     echo "VFP enabled               ${vfp-no}"
5099 fi
5100 if enabled arm; then
5101     echo "ARMv5TE enabled           ${armv5te-no}"
5102     echo "ARMv6 enabled             ${armv6-no}"
5103     echo "ARMv6T2 enabled           ${armv6t2-no}"
5104     echo "VFP enabled               ${vfp-no}"
5105     echo "NEON enabled              ${neon-no}"
5106     echo "THUMB enabled             ${thumb-no}"
5107 fi
5108 if enabled mips; then
5109     echo "MIPS FPU enabled          ${mipsfpu-no}"
5110     echo "MIPS32R2 enabled          ${mips32r2-no}"
5111     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5112     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5113 fi
5114 if enabled ppc; then
5115     echo "AltiVec enabled           ${altivec-no}"
5116     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5117     echo "dcbzl available           ${dcbzl-no}"
5118 fi
5119 echo "debug symbols             ${debug-no}"
5120 echo "strip symbols             ${stripping-no}"
5121 echo "optimize for size         ${small-no}"
5122 echo "optimizations             ${optimizations-no}"
5123 echo "static                    ${static-no}"
5124 echo "shared                    ${shared-no}"
5125 echo "postprocessing support    ${postproc-no}"
5126 echo "new filter support        ${avfilter-no}"
5127 echo "network support           ${network-no}"
5128 echo "threading support         ${thread_type-no}"
5129 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5130 echo "SDL support               ${sdl-no}"
5131 echo "opencl enabled            ${opencl-no}"
5132 echo "libzvbi enabled           ${libzvbi-no}"
5133 echo "texi2html enabled         ${texi2html-no}"
5134 echo "perl enabled              ${perl-no}"
5135 echo "pod2man enabled           ${pod2man-no}"
5136 echo "makeinfo enabled          ${makeinfo-no}"
5137 test -n "$random_seed" &&
5138     echo "random seed               ${random_seed}"
5139 echo
5140
5141 echo "External libraries:"
5142 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5143 echo
5144
5145 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5146     echo "Enabled ${type}s:"
5147     eval list=\$$(toupper $type)_LIST
5148     print_enabled '_*' $list | print_3_columns
5149     echo
5150 done
5151
5152 license="LGPL version 2.1 or later"
5153 if enabled nonfree; then
5154     license="nonfree and unredistributable"
5155 elif enabled gplv3; then
5156     license="GPL version 3 or later"
5157 elif enabled lgplv3; then
5158     license="LGPL version 3 or later"
5159 elif enabled gpl; then
5160     license="GPL version 2 or later"
5161 fi
5162
5163 echo "License: $license"
5164
5165 echo "Creating config.mak, config.h, and doc/config.texi..."
5166
5167 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5168
5169 enabled stripping || strip="echo skipping strip"
5170
5171 config_files="$TMPH config.mak doc/config.texi"
5172
5173 cat > config.mak <<EOF
5174 # Automatically generated by configure - do not modify!
5175 ifndef FFMPEG_CONFIG_MAK
5176 FFMPEG_CONFIG_MAK=1
5177 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5178 prefix=$prefix
5179 LIBDIR=\$(DESTDIR)$libdir
5180 SHLIBDIR=\$(DESTDIR)$shlibdir
5181 INCDIR=\$(DESTDIR)$incdir
5182 BINDIR=\$(DESTDIR)$bindir
5183 DATADIR=\$(DESTDIR)$datadir
5184 DOCDIR=\$(DESTDIR)$docdir
5185 MANDIR=\$(DESTDIR)$mandir
5186 SRC_PATH=$source_path
5187 ifndef MAIN_MAKEFILE
5188 SRC_PATH:=\$(SRC_PATH:.%=..%)
5189 endif
5190 CC_IDENT=$cc_ident
5191 ARCH=$arch
5192 CC=$cc
5193 CXX=$cxx
5194 AS=$as
5195 LD=$ld
5196 DEPCC=$dep_cc
5197 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5198 DEPAS=$as
5199 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5200 YASM=$yasmexe
5201 DEPYASM=$yasmexe
5202 AR=$ar
5203 ARFLAGS=$arflags
5204 AR_O=$ar_o
5205 RANLIB=$ranlib
5206 STRIP=$strip
5207 CP=cp -p
5208 LN_S=$ln_s
5209 CPPFLAGS=$CPPFLAGS
5210 CFLAGS=$CFLAGS
5211 CXXFLAGS=$CXXFLAGS
5212 ASFLAGS=$ASFLAGS
5213 AS_C=$AS_C
5214 AS_O=$AS_O
5215 CC_C=$CC_C
5216 CC_E=$CC_E
5217 CC_O=$CC_O
5218 CXX_C=$CXX_C
5219 CXX_O=$CXX_O
5220 LD_O=$LD_O
5221 LD_LIB=$LD_LIB
5222 LD_PATH=$LD_PATH
5223 DLLTOOL=$dlltool
5224 WINDRES=$windres
5225 DEPWINDRES=$dep_cc
5226 LDFLAGS=$LDFLAGS
5227 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5228 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5229 YASMFLAGS=$YASMFLAGS
5230 BUILDSUF=$build_suffix
5231 PROGSSUF=$progs_suffix
5232 FULLNAME=$FULLNAME
5233 LIBPREF=$LIBPREF
5234 LIBSUF=$LIBSUF
5235 LIBNAME=$LIBNAME
5236 SLIBPREF=$SLIBPREF
5237 SLIBSUF=$SLIBSUF
5238 EXESUF=$EXESUF
5239 EXTRA_VERSION=$extra_version
5240 CCDEP=$CCDEP
5241 CXXDEP=$CXXDEP
5242 CCDEP_FLAGS=$CCDEP_FLAGS
5243 ASDEP=$ASDEP
5244 ASDEP_FLAGS=$ASDEP_FLAGS
5245 CC_DEPFLAGS=$CC_DEPFLAGS
5246 AS_DEPFLAGS=$AS_DEPFLAGS
5247 HOSTCC=$host_cc
5248 HOSTLD=$host_ld
5249 HOSTCFLAGS=$host_cflags
5250 HOSTCPPFLAGS=$host_cppflags
5251 HOSTEXESUF=$HOSTEXESUF
5252 HOSTLDFLAGS=$host_ldflags
5253 HOSTLIBS=$host_libs
5254 DEPHOSTCC=$host_cc
5255 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5256 HOSTCCDEP=$HOSTCCDEP
5257 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5258 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5259 HOSTCC_C=$HOSTCC_C
5260 HOSTCC_O=$HOSTCC_O
5261 HOSTLD_O=$HOSTLD_O
5262 TARGET_EXEC=$target_exec $target_exec_args
5263 TARGET_PATH=$target_path
5264 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5265 CFLAGS-ffplay=$sdl_cflags
5266 ZLIB=$($ldflags_filter -lz)
5267 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5268 EXTRALIBS=$extralibs
5269 COMPAT_OBJS=$compat_objs
5270 EXEOBJS=$exeobjs
5271 INSTALL=$install
5272 LIBTARGET=${LIBTARGET}
5273 SLIBNAME=${SLIBNAME}
5274 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5275 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5276 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5277 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5278 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5279 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5280 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5281 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5282 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5283 NOREDZONE_FLAGS=$noredzone_flags
5284 EOF
5285
5286 get_version(){
5287     lcname=lib${1}
5288     name=$(toupper $lcname)
5289     file=$source_path/$lcname/version.h
5290     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5291     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5292     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5293     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5294     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5295     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5296 }
5297
5298 map 'get_version $v' $LIBRARY_LIST
5299
5300 print_program_libs(){
5301     eval "program_libs=\$${1}_libs"
5302     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5303 }
5304
5305 map 'print_program_libs $v' $PROGRAM_LIST
5306
5307 cat > $TMPH <<EOF
5308 /* Automatically generated by configure - do not modify! */
5309 #ifndef FFMPEG_CONFIG_H
5310 #define FFMPEG_CONFIG_H
5311 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5312 #define FFMPEG_LICENSE "$(c_escape $license)"
5313 #define CONFIG_THIS_YEAR 2014
5314 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5315 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5316 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5317 #define av_restrict $_restrict
5318 #define EXTERN_PREFIX "${extern_prefix}"
5319 #define EXTERN_ASM ${extern_prefix}
5320 #define BUILDSUF "$build_suffix"
5321 #define SLIBSUF "$SLIBSUF"
5322 #define HAVE_MMX2 HAVE_MMXEXT
5323 EOF
5324
5325 test -n "$assert_level" &&
5326     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5327
5328 test -n "$malloc_prefix" &&
5329     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5330
5331 if enabled yasm; then
5332     append config_files $TMPASM
5333     printf '' >$TMPASM
5334 fi
5335
5336 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5337
5338
5339 mkdir -p doc
5340 echo "@c auto-generated by configure" > doc/config.texi
5341
5342 print_config ARCH_   "$config_files" $ARCH_LIST
5343 print_config HAVE_   "$config_files" $HAVE_LIST
5344 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5345                                      $CONFIG_EXTRA      \
5346                                      $ALL_COMPONENTS    \
5347
5348 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5349 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5350
5351 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5352 cp_if_changed $TMPH config.h
5353 touch .config
5354
5355 enabled yasm && cp_if_changed $TMPASM config.asm
5356
5357 cat > $TMPH <<EOF
5358 /* Generated by ffconf */
5359 #ifndef AVUTIL_AVCONFIG_H
5360 #define AVUTIL_AVCONFIG_H
5361 EOF
5362
5363 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5364
5365 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5366
5367 cp_if_changed $TMPH libavutil/avconfig.h
5368
5369 if test -n "$WARNINGS"; then
5370     printf "\n$WARNINGS"
5371     enabled fatal_warnings && exit 1
5372 fi
5373
5374 # build pkg-config files
5375
5376 pkgconfig_generate(){
5377     name=$1
5378     shortname=${name#lib}${build_suffix}
5379     comment=$2
5380     version=$3
5381     libs=$4
5382     requires=$5
5383     enabled ${name#lib} || return 0
5384     mkdir -p $name
5385     cat <<EOF > $name/$name${build_suffix}.pc
5386 prefix=$prefix
5387 exec_prefix=\${prefix}
5388 libdir=$libdir
5389 includedir=$incdir
5390
5391 Name: $name
5392 Description: $comment
5393 Version: $version
5394 Requires: $(enabled shared || echo $requires)
5395 Requires.private: $(enabled shared && echo $requires)
5396 Conflicts:
5397 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5398 Libs.private: $(enabled shared && echo $libs)
5399 Cflags: -I\${includedir}
5400 EOF
5401
5402 mkdir -p doc/examples/pc-uninstalled
5403 includedir=${source_path}
5404 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5405     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5406 prefix=
5407 exec_prefix=
5408 libdir=\${pcfiledir}/../../../$name
5409 includedir=${includedir}
5410
5411 Name: $name
5412 Description: $comment
5413 Version: $version
5414 Requires: $requires
5415 Conflicts:
5416 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5417 Cflags: -I\${includedir}
5418 EOF
5419 }
5420
5421 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5422 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5423 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5424 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5425 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5426 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5427 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5428 lavfi_libs=${lavfi_libs%, }
5429
5430 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5431 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5432
5433 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5434 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5435 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5436 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5437 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5438 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5439 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5440 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5441 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"