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 [LIBDIR]
  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                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [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 [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 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   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 198   --enable-frei0r          enable frei0r video filtering [no]
 199   --enable-gnutls          enable gnutls, needed for https support
 200                            if openssl is not used [no]
 201   --disable-iconv          disable iconv [autodetect]
 202   --enable-ladspa          enable LADSPA audio filtering [no]
 203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 204   --enable-libass          enable libass subtitles rendering,
 205                            needed for subtitles and ass filter [no]
 206   --enable-libbluray       enable BluRay reading using libbluray [no]
 207   --enable-libbs2b         enable bs2b DSP library [no]
 208   --enable-libcaca         enable textual display using libcaca [no]
 209   --enable-libcelt         enable CELT decoding via libcelt [no]
 210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 212                            and libraw1394 [no]
 213   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 214   --enable-libfaac         enable AAC encoding via libfaac [no]
 215   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 216   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 217   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 218   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 219   --enable-libgme          enable Game Music Emu via libgme [no]
 220   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 221   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 222   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 223   --enable-libmfx          enable HW acceleration through libmfx
 224   --enable-libmodplug      enable ModPlug via libmodplug [no]
 225   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 226   --enable-libnut          enable NUT (de)muxing via libnut,
 227                            native (de)muxer exists [no]
 228   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 229   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 230   --enable-libopencv       enable video filtering via libopencv [no]
 231   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 232   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 233   --enable-libopus         enable Opus de/encoding via libopus [no]
 234   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 235   --enable-libquvi         enable quvi input via libquvi [no]
 236   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 237   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 238   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 239   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 240   --enable-libsoxr         enable Include libsoxr resampling [no]
 241   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 242   --enable-libssh          enable SFTP protocol via libssh [no]
 243   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 244   --enable-libtheora       enable Theora encoding via libtheora [no]
 245   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 246   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 247   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 248   --enable-libvidstab      enable video stabilization using vid.stab [no]
 249   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 250   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 251   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 252                            native implementation exists [no]
 253   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 254   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 255   --enable-libwebp         enable WebP encoding via libwebp [no]
 256   --enable-libx264         enable H.264 encoding via x264 [no]
 257   --enable-libx265         enable HEVC encoding via x265 [no]
 258   --enable-libxavs         enable AVS encoding via xavs [no]
 259   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 260   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 261   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 262   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 263   --enable-libxvid         enable Xvid encoding via xvidcore,
 264                            native MPEG-4/Xvid encoder exists [no]
 265   --enable-libzmq          enable message passing via libzmq [no]
 266   --enable-libzvbi         enable teletext support via libzvbi [no]
 267   --disable-lzma           disable lzma [autodetect]
 268   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 269   --enable-mmal            enable decoding via MMAL [no]
 270   --enable-nvenc           enable NVIDIA NVENC support [no]
 271   --enable-openal          enable OpenAL 1.1 capture support [no]
 272   --enable-opencl          enable OpenCL code
 273   --enable-opengl          enable OpenGL rendering [no]
 274   --enable-openssl         enable openssl, needed for https support
 275                            if gnutls is not used [no]
 276   --disable-sdl            disable sdl [autodetect]
 277   --enable-x11grab         enable X11 grabbing (legacy) [no]
 278   --disable-xlib           disable xlib [autodetect]
 279   --disable-zlib           disable zlib [autodetect]
 280
 281 Toolchain options:
 282   --arch=ARCH              select architecture [$arch]
 283   --cpu=CPU                select the minimum required CPU (affects
 284                            instruction selection, may crash on older CPUs)
 285   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 286   --progs-suffix=SUFFIX    program name suffix []
 287   --enable-cross-compile   assume a cross-compiler is used
 288   --sysroot=PATH           root of cross-build tree
 289   --sysinclude=PATH        location of cross-build system headers
 290   --target-os=OS           compiler targets OS [$target_os]
 291   --target-exec=CMD        command to run executables on target
 292   --target-path=DIR        path to view of build directory on target
 293   --target-samples=DIR     path to samples directory on target
 294   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 295   --toolchain=NAME         set tool defaults according to NAME
 296   --nm=NM                  use nm tool NM [$nm_default]
 297   --ar=AR                  use archive tool AR [$ar_default]
 298   --as=AS                  use assembler AS [$as_default]
 299   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 300   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 301   --cc=CC                  use C compiler CC [$cc_default]
 302   --cxx=CXX                use C compiler CXX [$cxx_default]
 303   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 304   --ld=LD                  use linker LD [$ld_default]
 305   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 306   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 307   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 308   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 309   --host-cc=HOSTCC         use host C compiler HOSTCC
 310   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 311   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 312   --host-ld=HOSTLD         use host linker HOSTLD
 313   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 314   --host-libs=HLIBS        use libs HLIBS when linking for host
 315   --host-os=OS             compiler host OS [$target_os]
 316   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 317   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 318   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 319   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 320   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 321   --extra-version=STRING   version string suffix []
 322   --optflags=OPTFLAGS      override optimization-related compiler flags
 323   --build-suffix=SUFFIX    library name suffix []
 324   --enable-pic             build position-independent code
 325   --enable-thumb           compile for Thumb instruction set
 326   --enable-lto             use link-time optimization
 327
 328 Advanced options (experts only):
 329   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 330   --disable-symver         disable symbol versioning
 331   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 332   --disable-safe-bitstream-reader
 333                            disable buffer boundary checking in bitreaders
 334                            (faster, but may crash)
 335   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 336   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 337
 338 Optimization options (experts only):
 339   --disable-asm            disable all assembly optimizations
 340   --disable-altivec        disable AltiVec optimizations
 341   --disable-amd3dnow       disable 3DNow! optimizations
 342   --disable-amd3dnowext    disable 3DNow! extended optimizations
 343   --disable-mmx            disable MMX optimizations
 344   --disable-mmxext         disable MMXEXT optimizations
 345   --disable-sse            disable SSE optimizations
 346   --disable-sse2           disable SSE2 optimizations
 347   --disable-sse3           disable SSE3 optimizations
 348   --disable-ssse3          disable SSSE3 optimizations
 349   --disable-sse4           disable SSE4 optimizations
 350   --disable-sse42          disable SSE4.2 optimizations
 351   --disable-avx            disable AVX optimizations
 352   --disable-xop            disable XOP optimizations
 353   --disable-fma3           disable FMA3 optimizations
 354   --disable-fma4           disable FMA4 optimizations
 355   --disable-avx2           disable AVX2 optimizations
 356   --disable-armv5te        disable armv5te optimizations
 357   --disable-armv6          disable armv6 optimizations
 358   --disable-armv6t2        disable armv6t2 optimizations
 359   --disable-vfp            disable VFP optimizations
 360   --disable-neon           disable NEON optimizations
 361   --disable-inline-asm     disable use of inline assembly
 362   --disable-yasm           disable use of nasm/yasm assembly
 363   --disable-mips32r5       disable MIPS32R5 optimizations
 364   --disable-mips64r6       disable MIPS64R6 optimizations
 365   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 366   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 367   --disable-msa            disable MSA optimizations
 368   --disable-mipsfpu        disable floating point MIPS optimizations
 369   --disable-loongson3      disable Loongson-3 SIMD optimizations
 370   --disable-fast-unaligned consider unaligned accesses slow
 371
 372 Developer options (useful when working on FFmpeg itself):
 373   --disable-debug          disable debugging symbols
 374   --enable-debug=LEVEL     set the debug level [$debuglevel]
 375   --disable-optimizations  disable compiler optimizations
 376   --enable-extra-warnings  enable more compiler warnings
 377   --disable-stripping      disable stripping of executables and shared libraries
 378   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 379                            2 causes a slowdown at runtime.
 380   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 381   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 382                            leaks and errors, using the specified valgrind binary.
 383                            Cannot be combined with --target-exec
 384   --enable-ftrapv          Trap arithmetic overflows
 385   --samples=PATH           location of test samples for FATE, if not set use
 386                            \$FATE_SAMPLES at make invocation time.
 387   --enable-neon-clobber-test check NEON registers for clobbering (should be
 388                            used only for debugging purposes)
 389   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 390                            should be used only for debugging purposes)
 391   --enable-random          randomly enable/disable components
 392   --disable-random
 393   --enable-random=LIST     randomly enable/disable specific components or
 394   --disable-random=LIST    component groups. LIST is a comma-separated list
 395                            of NAME[:PROB] entries where NAME is a component
 396                            (group) and PROB the probability associated with
 397                            NAME (default 0.5).
 398   --random-seed=VALUE      seed value for --enable/disable-random
 399   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 400                            (only applies to --disable-optimizations builds)
 401
 402 NOTE: Object files are built at the place where configure is launched.
 403 EOF
 404   exit 0
 405 }
 406
 407 quotes='""'
 408
 409 log(){
 410     echo "$@" >> $logfile
 411 }
 412
 413 log_file(){
 414     log BEGIN $1
 415     pr -n -t $1 >> $logfile
 416     log END $1
 417 }
 418
 419 echolog(){
 420     log "$@"
 421     echo "$@"
 422 }
 423
 424 warn(){
 425     log "WARNING: $*"
 426     WARNINGS="${WARNINGS}WARNING: $*\n"
 427 }
 428
 429 die(){
 430     echolog "$@"
 431     cat <<EOF
 432
 433 If you think configure made a mistake, make sure you are using the latest
 434 version from Git.  If the latest version fails, report the problem to the
 435 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 436 EOF
 437     if disabled logging; then
 438         cat <<EOF
 439 Rerun configure with logging enabled (do not use --disable-logging), and
 440 include the log this produces with your report.
 441 EOF
 442     else
 443         cat <<EOF
 444 Include the log file "$logfile" produced by configure as this will help
 445 solve the problem.
 446 EOF
 447     fi
 448     exit 1
 449 }
 450
 451 # Avoid locale weirdness, besides we really just want to translate ASCII.
 452 toupper(){
 453     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 454 }
 455
 456 tolower(){
 457     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 458 }
 459
 460 c_escape(){
 461     echo "$*" | sed 's/["\\]/\\\0/g'
 462 }
 463
 464 sh_quote(){
 465     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 466     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 467     echo "$v"
 468 }
 469
 470 cleanws(){
 471     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 472 }
 473
 474 filter(){
 475     pat=$1
 476     shift
 477     for v; do
 478         eval "case $v in $pat) echo $v ;; esac"
 479     done
 480 }
 481
 482 filter_out(){
 483     pat=$1
 484     shift
 485     for v; do
 486         eval "case $v in $pat) ;; *) echo $v ;; esac"
 487     done
 488 }
 489
 490 map(){
 491     m=$1
 492     shift
 493     for v; do eval $m; done
 494 }
 495
 496 add_suffix(){
 497     suffix=$1
 498     shift
 499     for v; do echo ${v}${suffix}; done
 500 }
 501
 502 set_all(){
 503     value=$1
 504     shift
 505     for var in $*; do
 506         eval $var=$value
 507     done
 508 }
 509
 510 set_weak(){
 511     value=$1
 512     shift
 513     for var; do
 514         eval : \${$var:=$value}
 515     done
 516 }
 517
 518 sanitize_var_name(){
 519     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 520 }
 521
 522 set_safe(){
 523     var=$1
 524     shift
 525     eval $(sanitize_var_name "$var")='$*'
 526 }
 527
 528 get_safe(){
 529     eval echo \$$(sanitize_var_name "$1")
 530 }
 531
 532 pushvar(){
 533     for pvar in $*; do
 534         eval level=\${${pvar}_level:=0}
 535         eval ${pvar}_${level}="\$$pvar"
 536         eval ${pvar}_level=$(($level+1))
 537     done
 538 }
 539
 540 popvar(){
 541     for pvar in $*; do
 542         eval level=\${${pvar}_level:-0}
 543         test $level = 0 && continue
 544         eval level=$(($level-1))
 545         eval $pvar="\${${pvar}_${level}}"
 546         eval ${pvar}_level=$level
 547         eval unset ${pvar}_${level}
 548     done
 549 }
 550
 551 enable(){
 552     set_all yes $*
 553 }
 554
 555 disable(){
 556     set_all no $*
 557 }
 558
 559 enable_weak(){
 560     set_weak yes $*
 561 }
 562
 563 disable_weak(){
 564     set_weak no $*
 565 }
 566
 567 enable_safe(){
 568     for var; do
 569         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 570     done
 571 }
 572
 573 disable_safe(){
 574     for var; do
 575         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 576     done
 577 }
 578
 579 do_enable_deep(){
 580     for var; do
 581         enabled $var && continue
 582         eval sel="\$${var}_select"
 583         eval sgs="\$${var}_suggest"
 584         pushvar var sgs
 585         enable_deep $sel
 586         popvar sgs
 587         enable_deep_weak $sgs
 588         popvar var
 589     done
 590 }
 591
 592 enable_deep(){
 593     do_enable_deep $*
 594     enable $*
 595 }
 596
 597 enable_deep_weak(){
 598     for var; do
 599         disabled $var && continue
 600         pushvar var
 601         do_enable_deep $var
 602         popvar var
 603         enable_weak $var
 604     done
 605 }
 606
 607 enabled(){
 608     test "${1#!}" = "$1" && op== || op=!=
 609     eval test "x\$${1#!}" $op "xyes"
 610 }
 611
 612 disabled(){
 613     test "${1#!}" = "$1" && op== || op=!=
 614     eval test "x\$${1#!}" $op "xno"
 615 }
 616
 617 enabled_all(){
 618     for opt; do
 619         enabled $opt || return 1
 620     done
 621 }
 622
 623 disabled_all(){
 624     for opt; do
 625         disabled $opt || return 1
 626     done
 627 }
 628
 629 enabled_any(){
 630     for opt; do
 631         enabled $opt && return 0
 632     done
 633 }
 634
 635 disabled_any(){
 636     for opt; do
 637         disabled $opt && return 0
 638     done
 639     return 1
 640 }
 641
 642 set_default(){
 643     for opt; do
 644         eval : \${$opt:=\$${opt}_default}
 645     done
 646 }
 647
 648 is_in(){
 649     value=$1
 650     shift
 651     for var in $*; do
 652         [ $var = $value ] && return 0
 653     done
 654     return 1
 655 }
 656
 657 do_check_deps(){
 658     for cfg; do
 659         cfg="${cfg#!}"
 660         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 661         disabled ${cfg}_checking && continue
 662         enable ${cfg}_checking
 663         append allopts $cfg
 664
 665         eval dep_all="\$${cfg}_deps"
 666         eval dep_any="\$${cfg}_deps_any"
 667         eval dep_sel="\$${cfg}_select"
 668         eval dep_sgs="\$${cfg}_suggest"
 669         eval dep_ifa="\$${cfg}_if"
 670         eval dep_ifn="\$${cfg}_if_any"
 671
 672         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 673         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 674         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 675
 676         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 677         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 678         enabled_all  $dep_all || disable $cfg
 679         enabled_any  $dep_any || disable $cfg
 680         disabled_any $dep_sel && disable $cfg
 681
 682         if enabled $cfg; then
 683             enable_deep $dep_sel
 684             enable_deep_weak $dep_sgs
 685         fi
 686
 687         disable ${cfg}_checking
 688     done
 689 }
 690
 691 check_deps(){
 692     unset allopts
 693
 694     do_check_deps "$@"
 695
 696     for cfg in $allopts; do
 697         enabled $cfg || continue
 698         eval dep_extralibs="\$${cfg}_extralibs"
 699         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 700     done
 701 }
 702
 703 print_config(){
 704     pfx=$1
 705     files=$2
 706     shift 2
 707     map 'eval echo "$v \${$v:-no}"' "$@" |
 708     awk "BEGIN { split(\"$files\", files) }
 709         {
 710             c = \"$pfx\" toupper(\$1);
 711             v = \$2;
 712             sub(/yes/, 1, v);
 713             sub(/no/,  0, v);
 714             for (f in files) {
 715                 file = files[f];
 716                 if (file ~ /\\.h\$/) {
 717                     printf(\"#define %s %d\\n\", c, v) >>file;
 718                 } else if (file ~ /\\.asm\$/) {
 719                     printf(\"%%define %s %d\\n\", c, v) >>file;
 720                 } else if (file ~ /\\.mak\$/) {
 721                     n = -v ? \"\" : \"!\";
 722                     printf(\"%s%s=yes\\n\", n, c) >>file;
 723                 } else if (file ~ /\\.texi\$/) {
 724                     pre = -v ? \"\" : \"@c \";
 725                     yesno = \$2;
 726                     c2 = tolower(c);
 727                     gsub(/_/, \"-\", c2);
 728                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 729                 }
 730             }
 731         }"
 732 }
 733
 734 print_enabled(){
 735     suf=$1
 736     shift
 737     for v; do
 738         enabled $v && printf "%s\n" ${v%$suf};
 739     done
 740 }
 741
 742 append(){
 743     var=$1
 744     shift
 745     eval "$var=\"\$$var $*\""
 746 }
 747
 748 prepend(){
 749     var=$1
 750     shift
 751     eval "$var=\"$* \$$var\""
 752 }
 753
 754 unique(){
 755     var=$1
 756     uniq_list=""
 757     for tok in $(eval echo \$$var); do
 758         uniq_list="$(filter_out $tok $uniq_list) $tok"
 759     done
 760     eval "$var=\"${uniq_list}\""
 761 }
 762
 763 add_cppflags(){
 764     append CPPFLAGS "$@"
 765 }
 766
 767 add_cflags(){
 768     append CFLAGS $($cflags_filter "$@")
 769 }
 770
 771 add_cxxflags(){
 772     append CXXFLAGS $($cflags_filter "$@")
 773 }
 774
 775 add_asflags(){
 776     append ASFLAGS $($asflags_filter "$@")
 777 }
 778
 779 add_ldflags(){
 780     append LDFLAGS $($ldflags_filter "$@")
 781 }
 782
 783 add_ldexeflags(){
 784     append LDEXEFLAGS $($ldflags_filter "$@")
 785 }
 786
 787 add_stripflags(){
 788     append ASMSTRIPFLAGS "$@"
 789 }
 790
 791 add_extralibs(){
 792     prepend extralibs $($ldflags_filter "$@")
 793 }
 794
 795 add_host_cppflags(){
 796     append host_cppflags "$@"
 797 }
 798
 799 add_host_cflags(){
 800     append host_cflags $($host_cflags_filter "$@")
 801 }
 802
 803 add_host_ldflags(){
 804     append host_ldflags $($host_ldflags_filter "$@")
 805 }
 806
 807 add_compat(){
 808     append compat_objs $1
 809     shift
 810     map 'add_cppflags -D$v' "$@"
 811 }
 812
 813 check_cmd(){
 814     log "$@"
 815     "$@" >> $logfile 2>&1
 816 }
 817
 818 check_stat(){
 819     log check_stat "$@"
 820     stat "$1" >> $logfile 2>&1
 821 }
 822
 823 cc_o(){
 824     eval printf '%s\\n' $CC_O
 825 }
 826
 827 cc_e(){
 828     eval printf '%s\\n' $CC_E
 829 }
 830
 831 check_cc(){
 832     log check_cc "$@"
 833     cat > $TMPC
 834     log_file $TMPC
 835     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 836 }
 837
 838 check_cxx(){
 839     log check_cxx "$@"
 840     cat > $TMPCPP
 841     log_file $TMPCPP
 842     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 843 }
 844
 845 check_oc(){
 846     log check_oc "$@"
 847     cat > $TMPM
 848     log_file $TMPM
 849     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 850 }
 851
 852 check_cpp(){
 853     log check_cpp "$@"
 854     cat > $TMPC
 855     log_file $TMPC
 856     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 857 }
 858
 859 as_o(){
 860     eval printf '%s\\n' $AS_O
 861 }
 862
 863 check_as(){
 864     log check_as "$@"
 865     cat > $TMPS
 866     log_file $TMPS
 867     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 868 }
 869
 870 check_inline_asm(){
 871     log check_inline_asm "$@"
 872     name="$1"
 873     code="$2"
 874     shift 2
 875     disable $name
 876     check_cc "$@" <<EOF && enable $name
 877 void foo(void){ __asm__ volatile($code); }
 878 EOF
 879 }
 880
 881 check_insn(){
 882     log check_insn "$@"
 883     check_inline_asm ${1}_inline "\"$2\""
 884     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 885 }
 886
 887 check_yasm(){
 888     log check_yasm "$@"
 889     echo "$1" > $TMPS
 890     log_file $TMPS
 891     shift 1
 892     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 893 }
 894
 895 ld_o(){
 896     eval printf '%s\\n' $LD_O
 897 }
 898
 899 check_ld(){
 900     log check_ld "$@"
 901     type=$1
 902     shift 1
 903     flags=$(filter_out '-l*|*.so' $@)
 904     libs=$(filter '-l*|*.so' $@)
 905     check_$type $($cflags_filter $flags) || return
 906     flags=$($ldflags_filter $flags)
 907     libs=$($ldflags_filter $libs)
 908     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 909 }
 910
 911 print_include(){
 912     hdr=$1
 913     test "${hdr%.h}" = "${hdr}" &&
 914         echo "#include $hdr"    ||
 915         echo "#include <$hdr>"
 916 }
 917
 918 check_code(){
 919     log check_code "$@"
 920     check=$1
 921     headers=$2
 922     code=$3
 923     shift 3
 924     {
 925         for hdr in $headers; do
 926             print_include $hdr
 927         done
 928         echo "int main(void) { $code; return 0; }"
 929     } | check_$check "$@"
 930 }
 931
 932 check_cppflags(){
 933     log check_cppflags "$@"
 934     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 935 int x;
 936 EOF
 937 }
 938
 939 test_cflags(){
 940     log test_cflags "$@"
 941     set -- $($cflags_filter "$@")
 942     check_cc "$@" <<EOF
 943 int x;
 944 EOF
 945 }
 946
 947 check_cflags(){
 948     log check_cflags "$@"
 949     test_cflags "$@" && add_cflags "$@"
 950 }
 951
 952 check_cxxflags(){
 953     log check_cxxflags "$@"
 954     set -- $($cflags_filter "$@")
 955     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 956 int x;
 957 EOF
 958 }
 959
 960 test_ldflags(){
 961     log test_ldflags "$@"
 962     check_ld "cc" "$@" <<EOF
 963 int main(void){ return 0; }
 964 EOF
 965 }
 966
 967 check_ldflags(){
 968     log check_ldflags "$@"
 969     test_ldflags "$@" && add_ldflags "$@"
 970 }
 971
 972 test_stripflags(){
 973     log test_stripflags "$@"
 974     # call check_cc to get a fresh TMPO
 975     check_cc <<EOF
 976 int main(void) { return 0; }
 977 EOF
 978     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 979 }
 980
 981 check_stripflags(){
 982     log check_stripflags "$@"
 983     test_stripflags "$@" && add_stripflags "$@"
 984 }
 985
 986 check_header(){
 987     log check_header "$@"
 988     header=$1
 989     shift
 990     disable_safe $header
 991     check_cpp "$@" <<EOF && enable_safe $header
 992 #include <$header>
 993 int x;
 994 EOF
 995 }
 996
 997 check_header_oc(){
 998     log check_header_oc "$@"
 999     rm -f -- "$TMPO"
1000     header=$1
1001     shift
1002     disable_safe $header
1003     {
1004        echo "#include <$header>"
1005        echo "int main(void) { return 0; }"
1006     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1007 }
1008
1009 check_func(){
1010     log check_func "$@"
1011     func=$1
1012     shift
1013     disable $func
1014     check_ld "cc" "$@" <<EOF && enable $func
1015 extern int $func();
1016 int main(void){ $func(); }
1017 EOF
1018 }
1019
1020 check_mathfunc(){
1021     log check_mathfunc "$@"
1022     func=$1
1023     narg=$2
1024     shift 2
1025     test $narg = 2 && args="f, g" || args="f"
1026     disable $func
1027     check_ld "cc" "$@" <<EOF && enable $func
1028 #include <math.h>
1029 float foo(float f, float g) { return $func($args); }
1030 int main(void){ return (int) foo; }
1031 EOF
1032 }
1033
1034 check_func_headers(){
1035     log check_func_headers "$@"
1036     headers=$1
1037     funcs=$2
1038     shift 2
1039     {
1040         for hdr in $headers; do
1041             print_include $hdr
1042         done
1043         for func in $funcs; do
1044             echo "long check_$func(void) { return (long) $func; }"
1045         done
1046         echo "int main(void) { return 0; }"
1047     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1048 }
1049
1050 check_class_headers_cpp(){
1051     log check_class_headers_cpp "$@"
1052     headers=$1
1053     classes=$2
1054     shift 2
1055     {
1056         for hdr in $headers; do
1057             echo "#include <$hdr>"
1058         done
1059         echo "int main(void) { "
1060         i=1
1061         for class in $classes; do
1062             echo "$class obj$i;"
1063             i=$(expr $i + 1)
1064         done
1065         echo "return 0; }"
1066     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1067 }
1068
1069 check_cpp_condition(){
1070     log check_cpp_condition "$@"
1071     header=$1
1072     condition=$2
1073     shift 2
1074     check_cpp "$@" <<EOF
1075 #include <$header>
1076 #if !($condition)
1077 #error "unsatisfied condition: $condition"
1078 #endif
1079 EOF
1080 }
1081
1082 check_lib(){
1083     log check_lib "$@"
1084     header="$1"
1085     func="$2"
1086     shift 2
1087     check_header $header && check_func $func "$@" && add_extralibs "$@"
1088 }
1089
1090 check_lib2(){
1091     log check_lib2 "$@"
1092     headers="$1"
1093     funcs="$2"
1094     shift 2
1095     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1096 }
1097
1098 check_lib_cpp(){
1099     log check_lib_cpp "$@"
1100     headers="$1"
1101     classes="$2"
1102     shift 2
1103     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1104 }
1105
1106 check_pkg_config(){
1107     log check_pkg_config "$@"
1108     pkgandversion="$1"
1109     pkg="${1%% *}"
1110     headers="$2"
1111     funcs="$3"
1112     shift 3
1113     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1114     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1115     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1116     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1117         set_safe ${pkg}_cflags $pkg_cflags   &&
1118         set_safe ${pkg}_libs   $pkg_libs
1119 }
1120
1121 check_exec(){
1122     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1123 }
1124
1125 check_exec_crash(){
1126     code=$(cat)
1127
1128     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1129     # are safe but may not be available everywhere.  Thus we use
1130     # raise(SIGTERM) instead.  The check is run in a subshell so we
1131     # can redirect the "Terminated" message from the shell.  SIGBUS
1132     # is not defined by standard C so it is used conditionally.
1133
1134     (check_exec "$@") >> $logfile 2>&1 <<EOF
1135 #include <signal.h>
1136 static void sighandler(int sig){
1137     raise(SIGTERM);
1138 }
1139 int foo(void){
1140     $code
1141 }
1142 int (*func_ptr)(void) = foo;
1143 int main(void){
1144     signal(SIGILL, sighandler);
1145     signal(SIGFPE, sighandler);
1146     signal(SIGSEGV, sighandler);
1147 #ifdef SIGBUS
1148     signal(SIGBUS, sighandler);
1149 #endif
1150     return func_ptr();
1151 }
1152 EOF
1153 }
1154
1155 check_type(){
1156     log check_type "$@"
1157     headers=$1
1158     type=$2
1159     shift 2
1160     disable_safe "$type"
1161     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1162 }
1163
1164 check_struct(){
1165     log check_struct "$@"
1166     headers=$1
1167     struct=$2
1168     member=$3
1169     shift 3
1170     disable_safe "${struct}_${member}"
1171     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1172         enable_safe "${struct}_${member}"
1173 }
1174
1175 check_builtin(){
1176     log check_builtin "$@"
1177     name=$1
1178     headers=$2
1179     builtin=$3
1180     shift 3
1181     disable "$name"
1182     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1183 }
1184
1185 check_compile_assert(){
1186     log check_compile_assert "$@"
1187     name=$1
1188     headers=$2
1189     condition=$3
1190     shift 3
1191     disable "$name"
1192     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1193 }
1194
1195 require(){
1196     name="$1"
1197     header="$2"
1198     func="$3"
1199     shift 3
1200     check_lib $header $func "$@" || die "ERROR: $name not found"
1201 }
1202
1203 require2(){
1204     name="$1"
1205     headers="$2"
1206     func="$3"
1207     shift 3
1208     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1209 }
1210
1211 require_cpp(){
1212     name="$1"
1213     headers="$2"
1214     classes="$3"
1215     shift 3
1216     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1217 }
1218
1219 use_pkg_config(){
1220     pkg="$1"
1221     check_pkg_config "$@" || return 1
1222     add_cflags    $(get_safe ${pkg}_cflags)
1223     add_extralibs $(get_safe ${pkg}_libs)
1224 }
1225
1226 require_pkg_config(){
1227     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1228 }
1229
1230 require_libfreetype(){
1231     log require_libfreetype "$@"
1232     pkg="freetype2"
1233     check_cmd $pkg_config --exists --print-errors $pkg \
1234       || die "ERROR: $pkg not found"
1235     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1236     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1237     {
1238         echo "#include <ft2build.h>"
1239         echo "#include FT_FREETYPE_H"
1240         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1241         echo "int main(void) { return 0; }"
1242     } | check_ld "cc" $pkg_cflags $pkg_libs \
1243       && set_safe ${pkg}_cflags $pkg_cflags \
1244       && set_safe ${pkg}_libs   $pkg_libs \
1245       || die "ERROR: $pkg not found"
1246     add_cflags    $(get_safe ${pkg}_cflags)
1247     add_extralibs $(get_safe ${pkg}_libs)
1248 }
1249
1250 hostcc_e(){
1251     eval printf '%s\\n' $HOSTCC_E
1252 }
1253
1254 hostcc_o(){
1255     eval printf '%s\\n' $HOSTCC_O
1256 }
1257
1258 check_host_cc(){
1259     log check_host_cc "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1263 }
1264
1265 check_host_cpp(){
1266     log check_host_cpp "$@"
1267     cat > $TMPC
1268     log_file $TMPC
1269     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1270 }
1271
1272 check_host_cppflags(){
1273     log check_host_cppflags "$@"
1274     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1275 int x;
1276 EOF
1277 }
1278
1279 check_host_cflags(){
1280     log check_host_cflags "$@"
1281     set -- $($host_cflags_filter "$@")
1282     check_host_cc "$@" <<EOF && append host_cflags "$@"
1283 int x;
1284 EOF
1285 }
1286
1287 check_host_cpp_condition(){
1288     log check_host_cpp_condition "$@"
1289     header=$1
1290     condition=$2
1291     shift 2
1292     check_host_cpp "$@" <<EOF
1293 #include <$header>
1294 #if !($condition)
1295 #error "unsatisfied condition: $condition"
1296 #endif
1297 EOF
1298 }
1299
1300 apply(){
1301     file=$1
1302     shift
1303     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1304 }
1305
1306 cp_if_changed(){
1307     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1308     mkdir -p "$(dirname $2)"
1309     $cp_f "$1" "$2"
1310 }
1311
1312 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1313 # system-dependent things.
1314
1315 COMPONENT_LIST="
1316     bsfs
1317     decoders
1318     demuxers
1319     encoders
1320     filters
1321     hwaccels
1322     indevs
1323     muxers
1324     outdevs
1325     parsers
1326     protocols
1327 "
1328
1329 EXAMPLE_LIST="
1330     avio_reading_example
1331     avio_list_dir_example
1332     decoding_encoding_example
1333     demuxing_decoding_example
1334     extract_mvs_example
1335     filter_audio_example
1336     filtering_audio_example
1337     filtering_video_example
1338     metadata_example
1339     muxing_example
1340     qsvdec_example
1341     remuxing_example
1342     resampling_audio_example
1343     scaling_video_example
1344     transcode_aac_example
1345     transcoding_example
1346 "
1347
1348 EXTERNAL_LIBRARY_LIST="
1349     avisynth
1350     bzlib
1351     crystalhd
1352     decklink
1353     frei0r
1354     gnutls
1355     iconv
1356     ladspa
1357     libaacplus
1358     libass
1359     libbluray
1360     libbs2b
1361     libcaca
1362     libcdio
1363     libcelt
1364     libdc1394
1365     libdcadec
1366     libfaac
1367     libfdk_aac
1368     libflite
1369     libfontconfig
1370     libfreetype
1371     libfribidi
1372     libgme
1373     libgsm
1374     libiec61883
1375     libilbc
1376     libmfx
1377     libmodplug
1378     libmp3lame
1379     libnut
1380     libopencore_amrnb
1381     libopencore_amrwb
1382     libopencv
1383     libopenh264
1384     libopenjpeg
1385     libopus
1386     libpulse
1387     libquvi
1388     librtmp
1389     libschroedinger
1390     libshine
1391     libsmbclient
1392     libsoxr
1393     libspeex
1394     libssh
1395     libstagefright_h264
1396     libtheora
1397     libtwolame
1398     libutvideo
1399     libv4l2
1400     libvidstab
1401     libvo_aacenc
1402     libvo_amrwbenc
1403     libvorbis
1404     libvpx
1405     libwavpack
1406     libwebp
1407     libx264
1408     libx265
1409     libxavs
1410     libxcb
1411     libxcb_shm
1412     libxcb_shape
1413     libxcb_xfixes
1414     libxvid
1415     libzmq
1416     libzvbi
1417     lzma
1418     mmal
1419     nvenc
1420     openal
1421     opencl
1422     opengl
1423     openssl
1424     sdl
1425     x11grab
1426     xlib
1427     zlib
1428 "
1429
1430 DOCUMENT_LIST="
1431     doc
1432     htmlpages
1433     manpages
1434     podpages
1435     txtpages
1436 "
1437
1438 FEATURE_LIST="
1439     ftrapv
1440     gray
1441     hardcoded_tables
1442     runtime_cpudetect
1443     safe_bitstream_reader
1444     shared
1445     small
1446     static
1447     swscale_alpha
1448 "
1449
1450 HWACCEL_LIST="
1451     dxva2
1452     vaapi
1453     vda
1454     vdpau
1455     xvmc
1456 "
1457
1458 LIBRARY_LIST="
1459     avcodec
1460     avdevice
1461     avfilter
1462     avformat
1463     avresample
1464     avutil
1465     postproc
1466     swresample
1467     swscale
1468 "
1469
1470 LICENSE_LIST="
1471     gpl
1472     nonfree
1473     version3
1474 "
1475
1476 PROGRAM_LIST="
1477     ffplay
1478     ffprobe
1479     ffserver
1480     ffmpeg
1481 "
1482
1483 SUBSYSTEM_LIST="
1484     dct
1485     dwt
1486     error_resilience
1487     faan
1488     fast_unaligned
1489     fft
1490     lsp
1491     lzo
1492     mdct
1493     pixelutils
1494     network
1495     rdft
1496 "
1497
1498 CONFIG_LIST="
1499     $COMPONENT_LIST
1500     $DOCUMENT_LIST
1501     $EXAMPLE_LIST
1502     $EXTERNAL_LIBRARY_LIST
1503     $FEATURE_LIST
1504     $HWACCEL_LIST
1505     $LICENSE_LIST
1506     $LIBRARY_LIST
1507     $PROGRAM_LIST
1508     $SUBSYSTEM_LIST
1509     fontconfig
1510     incompatible_libav_abi
1511     memalign_hack
1512     memory_poisoning
1513     neon_clobber_test
1514     pic
1515     pod2man
1516     raise_major
1517     thumb
1518     valgrind_backtrace
1519     xmm_clobber_test
1520 "
1521
1522 THREADS_LIST="
1523     pthreads
1524     os2threads
1525     w32threads
1526 "
1527
1528 ATOMICS_LIST="
1529     atomics_gcc
1530     atomics_suncc
1531     atomics_win32
1532 "
1533
1534 ARCH_LIST="
1535     aarch64
1536     alpha
1537     arm
1538     avr32
1539     avr32_ap
1540     avr32_uc
1541     bfin
1542     ia64
1543     m68k
1544     mips
1545     mips64
1546     parisc
1547     ppc
1548     ppc64
1549     s390
1550     sh4
1551     sparc
1552     sparc64
1553     tilegx
1554     tilepro
1555     tomi
1556     x86
1557     x86_32
1558     x86_64
1559 "
1560
1561 ARCH_EXT_LIST_ARM="
1562     armv5te
1563     armv6
1564     armv6t2
1565     armv8
1566     neon
1567     vfp
1568     vfpv3
1569     setend
1570 "
1571
1572 ARCH_EXT_LIST_MIPS="
1573     mipsfpu
1574     mips32r2
1575     mips32r5
1576     mips64r6
1577     mipsdspr1
1578     mipsdspr2
1579     msa
1580     loongson3
1581 "
1582
1583 ARCH_EXT_LIST_X86_SIMD="
1584     amd3dnow
1585     amd3dnowext
1586     avx
1587     avx2
1588     fma3
1589     fma4
1590     mmx
1591     mmxext
1592     sse
1593     sse2
1594     sse3
1595     sse4
1596     sse42
1597     ssse3
1598     xop
1599 "
1600
1601 ARCH_EXT_LIST_PPC="
1602     altivec
1603     dcbzl
1604     ldbrx
1605     ppc4xx
1606     vsx
1607 "
1608
1609 ARCH_EXT_LIST_X86="
1610     $ARCH_EXT_LIST_X86_SIMD
1611     cpunop
1612     i686
1613 "
1614
1615 ARCH_EXT_LIST="
1616     $ARCH_EXT_LIST_ARM
1617     $ARCH_EXT_LIST_PPC
1618     $ARCH_EXT_LIST_X86
1619     $ARCH_EXT_LIST_MIPS
1620     loongson
1621 "
1622
1623 ARCH_FEATURES="
1624     aligned_stack
1625     fast_64bit
1626     fast_clz
1627     fast_cmov
1628     local_aligned_8
1629     local_aligned_16
1630     local_aligned_32
1631     simd_align_16
1632 "
1633
1634 BUILTIN_LIST="
1635     atomic_cas_ptr
1636     atomic_compare_exchange
1637     machine_rw_barrier
1638     MemoryBarrier
1639     mm_empty
1640     rdtsc
1641     sarestart
1642     sync_val_compare_and_swap
1643 "
1644 HAVE_LIST_CMDLINE="
1645     inline_asm
1646     symver
1647     yasm
1648 "
1649
1650 HAVE_LIST_PUB="
1651     bigendian
1652     fast_unaligned
1653     incompatible_libav_abi
1654 "
1655
1656 HEADERS_LIST="
1657     alsa_asoundlib_h
1658     altivec_h
1659     arpa_inet_h
1660     asm_types_h
1661     cdio_paranoia_h
1662     cdio_paranoia_paranoia_h
1663     dev_bktr_ioctl_bt848_h
1664     dev_bktr_ioctl_meteor_h
1665     dev_ic_bt8xx_h
1666     dev_video_bktr_ioctl_bt848_h
1667     dev_video_meteor_ioctl_meteor_h
1668     direct_h
1669     dlfcn_h
1670     dxva_h
1671     ES2_gl_h
1672     gsm_h
1673     io_h
1674     mach_mach_time_h
1675     machine_ioctl_bt848_h
1676     machine_ioctl_meteor_h
1677     malloc_h
1678     openjpeg_1_5_openjpeg_h
1679     OpenGL_gl3_h
1680     poll_h
1681     sndio_h
1682     soundcard_h
1683     sys_mman_h
1684     sys_param_h
1685     sys_resource_h
1686     sys_select_h
1687     sys_soundcard_h
1688     sys_time_h
1689     sys_un_h
1690     sys_videoio_h
1691     termios_h
1692     udplite_h
1693     unistd_h
1694     valgrind_valgrind_h
1695     windows_h
1696     winsock2_h
1697 "
1698
1699 INTRINSICS_LIST="
1700     intrinsics_neon
1701 "
1702
1703 MATH_FUNCS="
1704     atanf
1705     atan2f
1706     cbrt
1707     cbrtf
1708     cosf
1709     exp2
1710     exp2f
1711     expf
1712     isinf
1713     isnan
1714     ldexpf
1715     llrint
1716     llrintf
1717     log2
1718     log2f
1719     log10f
1720     lrint
1721     lrintf
1722     powf
1723     rint
1724     round
1725     roundf
1726     sinf
1727     trunc
1728     truncf
1729 "
1730
1731 SYSTEM_FUNCS="
1732     access
1733     aligned_malloc
1734     clock_gettime
1735     closesocket
1736     CommandLineToArgvW
1737     CoTaskMemFree
1738     CryptGenRandom
1739     dlopen
1740     fcntl
1741     flt_lim
1742     fork
1743     getaddrinfo
1744     gethrtime
1745     getopt
1746     GetProcessAffinityMask
1747     GetProcessMemoryInfo
1748     GetProcessTimes
1749     getrusage
1750     getservbyport
1751     GetSystemTimeAsFileTime
1752     gettimeofday
1753     glob
1754     glXGetProcAddress
1755     gmtime_r
1756     inet_aton
1757     isatty
1758     jack_port_get_latency_range
1759     kbhit
1760     localtime_r
1761     lzo1x_999_compress
1762     mach_absolute_time
1763     MapViewOfFile
1764     memalign
1765     mkstemp
1766     mmap
1767     mprotect
1768     nanosleep
1769     PeekNamedPipe
1770     posix_memalign
1771     pthread_cancel
1772     sched_getaffinity
1773     SetConsoleTextAttribute
1774     setmode
1775     setrlimit
1776     Sleep
1777     strerror_r
1778     sysconf
1779     sysctl
1780     usleep
1781     VirtualAlloc
1782     wglGetProcAddress
1783 "
1784
1785 TOOLCHAIN_FEATURES="
1786     as_dn_directive
1787     as_func
1788     as_object_arch
1789     asm_mod_q
1790     attribute_may_alias
1791     attribute_packed
1792     ebp_available
1793     ebx_available
1794     gnu_as
1795     gnu_windres
1796     ibm_asm
1797     inline_asm_labels
1798     inline_asm_nonlocal_labels
1799     inline_asm_direct_symbol_refs
1800     pragma_deprecated
1801     rsync_contimeout
1802     symver_asm_label
1803     symver_gnu_asm
1804     vfp_args
1805     xform_asm
1806     xmm_clobbers
1807 "
1808
1809 TYPES_LIST="
1810     CONDITION_VARIABLE_Ptr
1811     DXVA_PicParams_HEVC
1812     socklen_t
1813     struct_addrinfo
1814     struct_group_source_req
1815     struct_ip_mreq_source
1816     struct_ipv6_mreq
1817     struct_pollfd
1818     struct_rusage_ru_maxrss
1819     struct_sctp_event_subscribe
1820     struct_sockaddr_in6
1821     struct_sockaddr_sa_len
1822     struct_sockaddr_storage
1823     struct_stat_st_mtim_tv_nsec
1824     struct_v4l2_frmivalenum_discrete
1825 "
1826
1827 HAVE_LIST="
1828     $ARCH_EXT_LIST
1829     $(add_suffix _external $ARCH_EXT_LIST)
1830     $(add_suffix _inline   $ARCH_EXT_LIST)
1831     $ARCH_FEATURES
1832     $ATOMICS_LIST
1833     $BUILTIN_LIST
1834     $HAVE_LIST_CMDLINE
1835     $HAVE_LIST_PUB
1836     $HEADERS_LIST
1837     $INTRINSICS_LIST
1838     $MATH_FUNCS
1839     $SYSTEM_FUNCS
1840     $THREADS_LIST
1841     $TOOLCHAIN_FEATURES
1842     $TYPES_LIST
1843     atomics_native
1844     dos_paths
1845     dxva2api_cobj
1846     dxva2_lib
1847     libc_msvcrt
1848     libdc1394_1
1849     libdc1394_2
1850     makeinfo
1851     makeinfo_html
1852     perl
1853     pod2man
1854     sdl
1855     section_data_rel_ro
1856     texi2html
1857     threads
1858     vaapi_x11
1859     vdpau_x11
1860     xlib
1861 "
1862
1863 # options emitted with CONFIG_ prefix but not available on the command line
1864 CONFIG_EXTRA="
1865     aandcttables
1866     ac3dsp
1867     audio_frame_queue
1868     audiodsp
1869     blockdsp
1870     bswapdsp
1871     cabac
1872     dvprofile
1873     exif
1874     faandct
1875     faanidct
1876     fdctdsp
1877     fmtconvert
1878     frame_thread_encoder
1879     gcrypt
1880     golomb
1881     gplv3
1882     h263dsp
1883     h264chroma
1884     h264dsp
1885     h264pred
1886     h264qpel
1887     hpeldsp
1888     huffman
1889     huffyuvdsp
1890     huffyuvencdsp
1891     idctdsp
1892     iirfilter
1893     imdct15
1894     intrax8
1895     jpegtables
1896     lgplv3
1897     llauddsp
1898     llviddsp
1899     lpc
1900     me_cmp
1901     mpeg_er
1902     mpegaudio
1903     mpegaudiodsp
1904     mpegvideo
1905     mpegvideoenc
1906     nettle
1907     pixblockdsp
1908     qpeldsp
1909     qsv
1910     qsvdec
1911     qsvenc
1912     rangecoder
1913     riffdec
1914     riffenc
1915     rtpdec
1916     rtpenc_chain
1917     sinewin
1918     startcode
1919     tpeldsp
1920     videodsp
1921     vp3dsp
1922     wma_freqs
1923 "
1924
1925 CMDLINE_SELECT="
1926     $ARCH_EXT_LIST
1927     $CONFIG_LIST
1928     $HAVE_LIST_CMDLINE
1929     $THREADS_LIST
1930     asm
1931     cross_compile
1932     debug
1933     extra_warnings
1934     logging
1935     lto
1936     optimizations
1937     rpath
1938     stripping
1939 "
1940
1941 PATHS_LIST="
1942     bindir
1943     datadir
1944     docdir
1945     incdir
1946     libdir
1947     mandir
1948     prefix
1949     shlibdir
1950 "
1951
1952 CMDLINE_SET="
1953     $PATHS_LIST
1954     ar
1955     arch
1956     as
1957     assert_level
1958     build_suffix
1959     cc
1960     cpu
1961     cross_prefix
1962     cxx
1963     dep_cc
1964     doxygen
1965     extra_version
1966     gas
1967     host_cc
1968     host_cflags
1969     host_ld
1970     host_ldflags
1971     host_libs
1972     host_os
1973     install
1974     ld
1975     logfile
1976     malloc_prefix
1977     nm
1978     optflags
1979     pkg_config
1980     pkg_config_flags
1981     progs_suffix
1982     random_seed
1983     ranlib
1984     samples
1985     strip
1986     sws_max_filter_size
1987     sysinclude
1988     sysroot
1989     target_exec
1990     target_os
1991     target_path
1992     target_samples
1993     tempprefix
1994     toolchain
1995     valgrind
1996     yasmexe
1997 "
1998
1999 CMDLINE_APPEND="
2000     extra_cflags
2001     extra_cxxflags
2002     host_cppflags
2003 "
2004
2005 # code dependency declarations
2006
2007 # architecture extensions
2008
2009 armv5te_deps="arm"
2010 armv6_deps="arm"
2011 armv6t2_deps="arm"
2012 armv8_deps="aarch64"
2013 neon_deps_any="aarch64 arm"
2014 intrinsics_neon_deps="neon"
2015 vfp_deps_any="aarch64 arm"
2016 vfpv3_deps="vfp"
2017 setend_deps="arm"
2018
2019 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2020
2021 loongson_deps="mips"
2022 mipsfpu_deps="mips"
2023 mipsdspr1_deps="mips"
2024 mipsdspr2_deps="mips"
2025 mips32r2_deps="mips"
2026 mips32r5_deps="mips"
2027 mips64r6_deps="mips"
2028 msa_deps="mips"
2029 loongson3_deps="mips"
2030
2031 altivec_deps="ppc"
2032 dcbzl_deps="ppc"
2033 ldbrx_deps="ppc"
2034 ppc4xx_deps="ppc"
2035 vsx_deps="ppc"
2036
2037 cpunop_deps="i686"
2038 x86_64_select="i686"
2039 x86_64_suggest="fast_cmov"
2040
2041 amd3dnow_deps="mmx"
2042 amd3dnowext_deps="amd3dnow"
2043 i686_deps="x86"
2044 mmx_deps="x86"
2045 mmxext_deps="mmx"
2046 sse_deps="mmxext"
2047 sse2_deps="sse"
2048 sse3_deps="sse2"
2049 ssse3_deps="sse3"
2050 sse4_deps="ssse3"
2051 sse42_deps="sse4"
2052 avx_deps="sse42"
2053 xop_deps="avx"
2054 fma3_deps="avx"
2055 fma4_deps="avx"
2056 avx2_deps="avx"
2057
2058 mmx_external_deps="yasm"
2059 mmx_inline_deps="inline_asm"
2060 mmx_suggest="mmx_external mmx_inline"
2061
2062 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2063     eval dep=\$${ext}_deps
2064     eval ${ext}_external_deps='"${dep}_external"'
2065     eval ${ext}_inline_deps='"${dep}_inline"'
2066     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2067 done
2068
2069 aligned_stack_if_any="aarch64 ppc x86"
2070 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2071 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2072 fast_unaligned_if_any="aarch64 ppc x86"
2073 simd_align_16_if_any="altivec neon sse"
2074
2075 # system capabilities
2076 symver_if_any="symver_asm_label symver_gnu_asm"
2077 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2078
2079 # threading support
2080 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2081 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2082 atomics_win32_if="MemoryBarrier"
2083 atomics_native_if_any="$ATOMICS_LIST"
2084 w32threads_deps="atomics_native"
2085 threads_if_any="$THREADS_LIST"
2086
2087 # subsystems
2088 dct_select="rdft"
2089 error_resilience_select="me_cmp"
2090 faandct_deps="faan fdctdsp"
2091 faanidct_deps="faan idctdsp"
2092 frame_thread_encoder_deps="encoders threads"
2093 intrax8_select="error_resilience"
2094 mdct_select="fft"
2095 rdft_select="fft"
2096 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2097 mpeg_er_select="error_resilience"
2098 mpegaudio_select="mpegaudiodsp"
2099 mpegaudiodsp_select="dct"
2100 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2101 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2102 qsvdec_select="qsv"
2103 qsvenc_select="qsv"
2104
2105 # decoders / encoders
2106 aac_decoder_select="imdct15 mdct sinewin"
2107 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2108 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2109 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2110 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2111 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2112 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2113 aic_decoder_select="golomb idctdsp"
2114 alac_encoder_select="lpc"
2115 als_decoder_select="bswapdsp"
2116 amrnb_decoder_select="lsp"
2117 amrwb_decoder_select="lsp"
2118 amv_decoder_select="sp5x_decoder exif"
2119 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2120 ape_decoder_select="bswapdsp llauddsp"
2121 apng_decoder_select="zlib"
2122 apng_encoder_select="huffyuvencdsp zlib"
2123 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2124 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2125 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2126 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2127 atrac1_decoder_select="mdct sinewin"
2128 atrac3_decoder_select="mdct"
2129 atrac3p_decoder_select="mdct sinewin"
2130 avrn_decoder_select="exif jpegtables"
2131 bink_decoder_select="blockdsp hpeldsp"
2132 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2133 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2134 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2135 cllc_decoder_select="bswapdsp"
2136 comfortnoise_encoder_select="lpc"
2137 cook_decoder_select="audiodsp mdct sinewin"
2138 cscd_decoder_select="lzo"
2139 cscd_decoder_suggest="zlib"
2140 dca_decoder_select="fmtconvert mdct"
2141 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2142 dnxhd_decoder_select="blockdsp idctdsp"
2143 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2144 dvvideo_decoder_select="dvprofile idctdsp"
2145 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2146 dxa_decoder_select="zlib"
2147 eac3_decoder_select="ac3_decoder"
2148 eac3_encoder_select="ac3_encoder"
2149 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2150 eatgq_decoder_select="aandcttables"
2151 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2152 exr_decoder_select="zlib"
2153 ffv1_decoder_select="golomb rangecoder"
2154 ffv1_encoder_select="rangecoder"
2155 ffvhuff_decoder_select="huffyuv_decoder"
2156 ffvhuff_encoder_select="huffyuv_encoder"
2157 fic_decoder_select="golomb"
2158 flac_decoder_select="golomb"
2159 flac_encoder_select="bswapdsp golomb lpc"
2160 flashsv_decoder_select="zlib"
2161 flashsv_encoder_select="zlib"
2162 flashsv2_encoder_select="zlib"
2163 flashsv2_decoder_select="zlib"
2164 flv_decoder_select="h263_decoder"
2165 flv_encoder_select="h263_encoder"
2166 fourxm_decoder_select="blockdsp bswapdsp"
2167 fraps_decoder_select="bswapdsp huffman"
2168 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2169 g729_decoder_select="audiodsp"
2170 h261_decoder_select="mpeg_er mpegvideo"
2171 h261_encoder_select="aandcttables mpegvideoenc"
2172 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2173 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2174 h263i_decoder_select="h263_decoder"
2175 h263p_decoder_select="h263_decoder"
2176 h263p_encoder_select="h263_encoder"
2177 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2178 h264_decoder_suggest="error_resilience"
2179 h264_qsv_decoder_deps="libmfx"
2180 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2181 h264_qsv_encoder_deps="libmfx"
2182 h264_qsv_encoder_select="qsvenc"
2183 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2184 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2185 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2186 iac_decoder_select="imc_decoder"
2187 imc_decoder_select="bswapdsp fft mdct sinewin"
2188 indeo3_decoder_select="hpeldsp"
2189 interplay_video_decoder_select="hpeldsp"
2190 jpegls_decoder_select="golomb mjpeg_decoder"
2191 jpegls_encoder_select="golomb"
2192 jv_decoder_select="blockdsp"
2193 lagarith_decoder_select="huffyuvdsp"
2194 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2195 loco_decoder_select="golomb"
2196 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2197 metasound_decoder_select="lsp mdct sinewin"
2198 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2199 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2200 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2201 mjpegb_decoder_select="mjpeg_decoder"
2202 mlp_decoder_select="mlp_parser"
2203 motionpixels_decoder_select="bswapdsp"
2204 mp1_decoder_select="mpegaudio"
2205 mp1float_decoder_select="mpegaudio"
2206 mp2_decoder_select="mpegaudio"
2207 mp2float_decoder_select="mpegaudio"
2208 mp3_decoder_select="mpegaudio"
2209 mp3adu_decoder_select="mpegaudio"
2210 mp3adufloat_decoder_select="mpegaudio"
2211 mp3float_decoder_select="mpegaudio"
2212 mp3on4_decoder_select="mpegaudio"
2213 mp3on4float_decoder_select="mpegaudio"
2214 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2215 mpc8_decoder_select="mpegaudiodsp"
2216 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2217 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2218 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2219 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2220 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2221 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2222 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2223 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2224 mpeg4_encoder_select="h263_encoder"
2225 msmpeg4v1_decoder_select="h263_decoder"
2226 msmpeg4v2_decoder_select="h263_decoder"
2227 msmpeg4v2_encoder_select="h263_encoder"
2228 msmpeg4v3_decoder_select="h263_decoder"
2229 msmpeg4v3_encoder_select="h263_encoder"
2230 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2231 mxpeg_decoder_select="mjpeg_decoder"
2232 nellymoser_decoder_select="mdct sinewin"
2233 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2234 nuv_decoder_select="idctdsp lzo"
2235 on2avc_decoder_select="mdct"
2236 opus_decoder_deps="swresample"
2237 opus_decoder_select="imdct15"
2238 png_decoder_select="zlib"
2239 png_encoder_select="huffyuvencdsp zlib"
2240 prores_decoder_select="blockdsp idctdsp"
2241 prores_encoder_select="fdctdsp"
2242 qcelp_decoder_select="lsp"
2243 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2244 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2245 ra_144_decoder_select="audiodsp"
2246 ralf_decoder_select="golomb"
2247 rawvideo_decoder_select="bswapdsp"
2248 rtjpeg_decoder_select="me_cmp"
2249 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2250 rv10_encoder_select="h263_encoder"
2251 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2252 rv20_encoder_select="h263_encoder"
2253 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2254 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2255 shorten_decoder_select="golomb"
2256 sipr_decoder_select="lsp"
2257 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2258 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2259 sonic_decoder_select="golomb rangecoder"
2260 sonic_encoder_select="golomb rangecoder"
2261 sonic_ls_encoder_select="golomb rangecoder"
2262 sp5x_decoder_select="mjpeg_decoder"
2263 svq1_decoder_select="hpeldsp"
2264 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2265 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2266 svq3_decoder_suggest="zlib"
2267 tak_decoder_select="audiodsp"
2268 tdsc_decoder_select="zlib mjpeg_decoder"
2269 theora_decoder_select="vp3_decoder"
2270 thp_decoder_select="mjpeg_decoder"
2271 tiff_decoder_suggest="zlib lzma"
2272 tiff_encoder_suggest="zlib"
2273 truehd_decoder_select="mlp_parser"
2274 truemotion2_decoder_select="bswapdsp"
2275 truespeech_decoder_select="bswapdsp"
2276 tscc_decoder_select="zlib"
2277 twinvq_decoder_select="mdct lsp sinewin"
2278 utvideo_decoder_select="bswapdsp"
2279 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2280 vble_decoder_select="huffyuvdsp"
2281 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2282 vc1image_decoder_select="vc1_decoder"
2283 vorbis_decoder_select="mdct"
2284 vorbis_encoder_select="mdct"
2285 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2286 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2287 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2288 vp6a_decoder_select="vp6_decoder"
2289 vp6f_decoder_select="vp6_decoder"
2290 vp7_decoder_select="h264pred videodsp"
2291 vp8_decoder_select="h264pred videodsp"
2292 vp9_decoder_select="videodsp vp9_parser"
2293 webp_decoder_select="vp8_decoder"
2294 wmalossless_decoder_select="llauddsp"
2295 wmapro_decoder_select="mdct sinewin wma_freqs"
2296 wmav1_decoder_select="mdct sinewin wma_freqs"
2297 wmav1_encoder_select="mdct sinewin wma_freqs"
2298 wmav2_decoder_select="mdct sinewin wma_freqs"
2299 wmav2_encoder_select="mdct sinewin wma_freqs"
2300 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2301 wmv1_decoder_select="h263_decoder"
2302 wmv1_encoder_select="h263_encoder"
2303 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2304 wmv2_encoder_select="h263_encoder"
2305 wmv3_decoder_select="vc1_decoder"
2306 wmv3image_decoder_select="wmv3_decoder"
2307 zerocodec_decoder_select="zlib"
2308 zlib_decoder_select="zlib"
2309 zlib_encoder_select="zlib"
2310 zmbv_decoder_select="zlib"
2311 zmbv_encoder_select="zlib"
2312
2313 # hardware accelerators
2314 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2315 dxva2_deps="dxva2api_h"
2316 vaapi_deps="va_va_h"
2317 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2318 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2319 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2320 xvmc_deps="X11_extensions_XvMClib_h"
2321
2322 h263_vaapi_hwaccel_deps="vaapi"
2323 h263_vaapi_hwaccel_select="h263_decoder"
2324 h263_vdpau_hwaccel_deps="vdpau"
2325 h263_vdpau_hwaccel_select="h263_decoder"
2326 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2327 h264_dxva2_hwaccel_deps="dxva2"
2328 h264_dxva2_hwaccel_select="h264_decoder"
2329 h264_mmal_decoder_deps="mmal"
2330 h264_mmal_hwaccel_deps="mmal"
2331 h264_mmal_decoder_select="h264_decoder"
2332 h264_mmal_encoder_deps="mmal"
2333 h264_qsv_hwaccel_deps="libmfx"
2334 h264_vaapi_hwaccel_deps="vaapi"
2335 h264_vaapi_hwaccel_select="h264_decoder"
2336 h264_vda_decoder_deps="vda"
2337 h264_vda_decoder_select="h264_decoder"
2338 h264_vda_hwaccel_deps="vda"
2339 h264_vda_hwaccel_select="h264_decoder"
2340 h264_vda_old_hwaccel_deps="vda"
2341 h264_vda_old_hwaccel_select="h264_decoder"
2342 h264_vdpau_decoder_deps="vdpau"
2343 h264_vdpau_decoder_select="h264_decoder"
2344 h264_vdpau_hwaccel_deps="vdpau"
2345 h264_vdpau_hwaccel_select="h264_decoder"
2346 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2347 hevc_dxva2_hwaccel_select="hevc_decoder"
2348 mpeg_vdpau_decoder_deps="vdpau"
2349 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2350 mpeg_xvmc_hwaccel_deps="xvmc"
2351 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2352 mpeg1_vdpau_decoder_deps="vdpau"
2353 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2354 mpeg1_vdpau_hwaccel_deps="vdpau"
2355 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2356 mpeg1_xvmc_hwaccel_deps="xvmc"
2357 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2358 mpeg2_crystalhd_decoder_select="crystalhd"
2359 mpeg2_dxva2_hwaccel_deps="dxva2"
2360 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2361 mpeg2_vaapi_hwaccel_deps="vaapi"
2362 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2363 mpeg2_vdpau_hwaccel_deps="vdpau"
2364 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2365 mpeg2_xvmc_hwaccel_deps="xvmc"
2366 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2367 mpeg4_crystalhd_decoder_select="crystalhd"
2368 mpeg4_vaapi_hwaccel_deps="vaapi"
2369 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2370 mpeg4_vdpau_decoder_deps="vdpau"
2371 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2372 mpeg4_vdpau_hwaccel_deps="vdpau"
2373 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2374 msmpeg4_crystalhd_decoder_select="crystalhd"
2375 vc1_crystalhd_decoder_select="crystalhd"
2376 vc1_dxva2_hwaccel_deps="dxva2"
2377 vc1_dxva2_hwaccel_select="vc1_decoder"
2378 vc1_vaapi_hwaccel_deps="vaapi"
2379 vc1_vaapi_hwaccel_select="vc1_decoder"
2380 vc1_vdpau_decoder_deps="vdpau"
2381 vc1_vdpau_decoder_select="vc1_decoder"
2382 vc1_vdpau_hwaccel_deps="vdpau"
2383 vc1_vdpau_hwaccel_select="vc1_decoder"
2384 wmv3_crystalhd_decoder_select="crystalhd"
2385 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2386 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2387 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2388 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2389
2390 # parsers
2391 h264_parser_select="h264_decoder"
2392 hevc_parser_select="hevc_decoder"
2393 mpegvideo_parser_select="mpegvideo"
2394 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2395 vc1_parser_select="mpegvideo startcode vc1_decoder"
2396
2397 # bitstream_filters
2398 mjpeg2jpeg_bsf_select="jpegtables"
2399
2400 # external libraries
2401 libaacplus_encoder_deps="libaacplus"
2402 libcelt_decoder_deps="libcelt"
2403 libdcadec_decoder_deps="libdcadec"
2404 libfaac_encoder_deps="libfaac"
2405 libfaac_encoder_select="audio_frame_queue"
2406 libfdk_aac_decoder_deps="libfdk_aac"
2407 libfdk_aac_encoder_deps="libfdk_aac"
2408 libfdk_aac_encoder_select="audio_frame_queue"
2409 libgme_demuxer_deps="libgme"
2410 libgsm_decoder_deps="libgsm"
2411 libgsm_encoder_deps="libgsm"
2412 libgsm_ms_decoder_deps="libgsm"
2413 libgsm_ms_encoder_deps="libgsm"
2414 libilbc_decoder_deps="libilbc"
2415 libilbc_encoder_deps="libilbc"
2416 libmodplug_demuxer_deps="libmodplug"
2417 libmp3lame_encoder_deps="libmp3lame"
2418 libmp3lame_encoder_select="audio_frame_queue"
2419 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2420 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2421 libopencore_amrnb_encoder_select="audio_frame_queue"
2422 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2423 libopenh264_encoder_deps="libopenh264"
2424 libopenjpeg_decoder_deps="libopenjpeg"
2425 libopenjpeg_encoder_deps="libopenjpeg"
2426 libopus_decoder_deps="libopus"
2427 libopus_encoder_deps="libopus"
2428 libopus_encoder_select="audio_frame_queue"
2429 libquvi_demuxer_deps="libquvi"
2430 libschroedinger_decoder_deps="libschroedinger"
2431 libschroedinger_encoder_deps="libschroedinger"
2432 libshine_encoder_deps="libshine"
2433 libshine_encoder_select="audio_frame_queue"
2434 libspeex_decoder_deps="libspeex"
2435 libspeex_encoder_deps="libspeex"
2436 libspeex_encoder_select="audio_frame_queue"
2437 libstagefright_h264_decoder_deps="libstagefright_h264"
2438 libtheora_encoder_deps="libtheora"
2439 libtwolame_encoder_deps="libtwolame"
2440 libvo_aacenc_encoder_deps="libvo_aacenc"
2441 libvo_aacenc_encoder_select="audio_frame_queue"
2442 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2443 libvorbis_decoder_deps="libvorbis"
2444 libvorbis_encoder_deps="libvorbis"
2445 libvorbis_encoder_select="audio_frame_queue"
2446 libvpx_vp8_decoder_deps="libvpx"
2447 libvpx_vp8_encoder_deps="libvpx"
2448 libvpx_vp9_decoder_deps="libvpx"
2449 libvpx_vp9_encoder_deps="libvpx"
2450 libwavpack_encoder_deps="libwavpack"
2451 libwebp_encoder_deps="libwebp"
2452 libx264_encoder_deps="libx264"
2453 libx264rgb_encoder_deps="libx264"
2454 libx264rgb_encoder_select="libx264_encoder"
2455 libx265_encoder_deps="libx265"
2456 libxavs_encoder_deps="libxavs"
2457 libxvid_encoder_deps="libxvid"
2458 libutvideo_decoder_deps="libutvideo"
2459 libutvideo_encoder_deps="libutvideo"
2460 libzvbi_teletext_decoder_deps="libzvbi"
2461 nvenc_encoder_deps="nvenc"
2462 nvenc_h265_encoder_deps="nvenc"
2463
2464 # demuxers / muxers
2465 ac3_demuxer_select="ac3_parser"
2466 asf_demuxer_select="riffdec"
2467 asf_muxer_select="riffenc"
2468 asf_stream_muxer_select="asf_muxer"
2469 avi_demuxer_select="riffdec exif"
2470 avi_muxer_select="riffenc"
2471 avisynth_demuxer_deps="avisynth"
2472 avisynth_demuxer_select="riffdec"
2473 caf_demuxer_select="riffdec"
2474 dash_muxer_select="mp4_muxer"
2475 dirac_demuxer_select="dirac_parser"
2476 dts_demuxer_select="dca_parser"
2477 dtshd_demuxer_select="dca_parser"
2478 dv_demuxer_select="dvprofile"
2479 dv_muxer_select="dvprofile"
2480 dxa_demuxer_select="riffdec"
2481 eac3_demuxer_select="ac3_parser"
2482 f4v_muxer_select="mov_muxer"
2483 flac_demuxer_select="flac_parser"
2484 hds_muxer_select="flv_muxer"
2485 hls_muxer_select="mpegts_muxer"
2486 image2_alias_pix_demuxer_select="image2_demuxer"
2487 image2_brender_pix_demuxer_select="image2_demuxer"
2488 ipod_muxer_select="mov_muxer"
2489 ismv_muxer_select="mov_muxer"
2490 libnut_demuxer_deps="libnut"
2491 libnut_muxer_deps="libnut"
2492 matroska_audio_muxer_select="matroska_muxer"
2493 matroska_demuxer_select="riffdec"
2494 matroska_demuxer_suggest="bzlib lzo zlib"
2495 matroska_muxer_select="riffenc"
2496 mmf_muxer_select="riffenc"
2497 mov_demuxer_select="riffdec"
2498 mov_demuxer_suggest="zlib"
2499 mov_muxer_select="riffenc rtpenc_chain"
2500 mp3_demuxer_select="mpegaudio_parser"
2501 mp4_muxer_select="mov_muxer"
2502 mpegts_muxer_select="adts_muxer latm_muxer"
2503 mpegtsraw_demuxer_select="mpegts_demuxer"
2504 mxf_d10_muxer_select="mxf_muxer"
2505 mxf_opatom_muxer_select="mxf_muxer"
2506 nut_muxer_select="riffenc"
2507 nuv_demuxer_select="riffdec"
2508 oga_muxer_select="ogg_muxer"
2509 ogg_demuxer_select="golomb"
2510 opus_muxer_select="ogg_muxer"
2511 psp_muxer_select="mov_muxer"
2512 rtp_demuxer_select="sdp_demuxer"
2513 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2514 rtsp_demuxer_select="http_protocol rtpdec"
2515 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2516 sap_demuxer_select="sdp_demuxer"
2517 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2518 sdp_demuxer_select="rtpdec"
2519 smoothstreaming_muxer_select="ismv_muxer"
2520 spdif_muxer_select="aac_parser"
2521 spx_muxer_select="ogg_muxer"
2522 tak_demuxer_select="tak_parser"
2523 tg2_muxer_select="mov_muxer"
2524 tgp_muxer_select="mov_muxer"
2525 vobsub_demuxer_select="mpegps_demuxer"
2526 w64_demuxer_select="wav_demuxer"
2527 w64_muxer_select="wav_muxer"
2528 wav_demuxer_select="riffdec"
2529 wav_muxer_select="riffenc"
2530 webm_muxer_select="riffenc"
2531 wtv_demuxer_select="riffdec"
2532 wtv_muxer_select="riffenc"
2533 xmv_demuxer_select="riffdec"
2534 xwma_demuxer_select="riffdec"
2535
2536 # indevs / outdevs
2537 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2538 alsa_outdev_deps="alsa_asoundlib_h"
2539 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2540 avfoundation_indev_select="avfoundation"
2541 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2542 caca_outdev_deps="libcaca"
2543 decklink_outdev_deps="decklink pthreads"
2544 decklink_outdev_extralibs="-lstdc++"
2545 decklink_indev_deps="decklink pthreads"
2546 decklink_indev_extralibs="-lstdc++"
2547 dshow_indev_deps="IBaseFilter"
2548 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2549 dv1394_indev_deps="dv1394"
2550 dv1394_indev_select="dv_demuxer"
2551 fbdev_indev_deps="linux_fb_h"
2552 fbdev_outdev_deps="linux_fb_h"
2553 gdigrab_indev_deps="CreateDIBSection"
2554 gdigrab_indev_extralibs="-lgdi32"
2555 gdigrab_indev_select="bmp_decoder"
2556 iec61883_indev_deps="libiec61883"
2557 jack_indev_deps="jack_jack_h sem_timedwait"
2558 lavfi_indev_deps="avfilter"
2559 libcdio_indev_deps="libcdio"
2560 libdc1394_indev_deps="libdc1394"
2561 libv4l2_indev_deps="libv4l2"
2562 openal_indev_deps="openal"
2563 opengl_outdev_deps="opengl"
2564 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2565 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2566 pulse_indev_deps="libpulse"
2567 pulse_outdev_deps="libpulse"
2568 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2569 qtkit_indev_select="qtkit"
2570 sdl_outdev_deps="sdl"
2571 sndio_indev_deps="sndio_h"
2572 sndio_outdev_deps="sndio_h"
2573 v4l_indev_deps="linux_videodev_h"
2574 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2575 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2576 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2577 vfwcap_indev_extralibs="-lavicap32"
2578 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2579 xv_outdev_extralibs="-lXv -lX11 -lXext"
2580 x11grab_indev_deps="x11grab"
2581 x11grab_xcb_indev_deps="libxcb"
2582
2583 # protocols
2584 bluray_protocol_deps="libbluray"
2585 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2586 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2587 ffrtmpcrypt_protocol_select="tcp_protocol"
2588 ffrtmphttp_protocol_deps="!librtmp_protocol"
2589 ffrtmphttp_protocol_select="http_protocol"
2590 ftp_protocol_select="tcp_protocol"
2591 gopher_protocol_select="network"
2592 http_protocol_select="tcp_protocol"
2593 httpproxy_protocol_select="tcp_protocol"
2594 https_protocol_select="tls_protocol"
2595 icecast_protocol_select="http_protocol"
2596 librtmp_protocol_deps="librtmp"
2597 librtmpe_protocol_deps="librtmp"
2598 librtmps_protocol_deps="librtmp"
2599 librtmpt_protocol_deps="librtmp"
2600 librtmpte_protocol_deps="librtmp"
2601 libsmbclient_protocol_deps="libsmbclient gplv3"
2602 libssh_protocol_deps="libssh"
2603 mmsh_protocol_select="http_protocol"
2604 mmst_protocol_select="network"
2605 rtmp_protocol_deps="!librtmp_protocol"
2606 rtmp_protocol_select="tcp_protocol"
2607 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2608 rtmps_protocol_deps="!librtmp_protocol"
2609 rtmps_protocol_select="tls_protocol"
2610 rtmpt_protocol_select="ffrtmphttp_protocol"
2611 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2612 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2613 rtp_protocol_select="udp_protocol"
2614 sctp_protocol_deps="struct_sctp_event_subscribe"
2615 sctp_protocol_select="network"
2616 srtp_protocol_select="rtp_protocol"
2617 tcp_protocol_select="network"
2618 tls_protocol_deps_any="openssl gnutls"
2619 tls_protocol_select="tcp_protocol"
2620 udp_protocol_select="network"
2621 udplite_protocol_select="network"
2622 unix_protocol_deps="sys_un_h"
2623 unix_protocol_select="network"
2624
2625 # filters
2626 amovie_filter_deps="avcodec avformat"
2627 aresample_filter_deps="swresample"
2628 ass_filter_deps="libass"
2629 asyncts_filter_deps="avresample"
2630 atempo_filter_deps="avcodec"
2631 atempo_filter_select="rdft"
2632 azmq_filter_deps="libzmq"
2633 blackframe_filter_deps="gpl"
2634 boxblur_filter_deps="gpl"
2635 bs2b_filter_deps="libbs2b"
2636 colormatrix_filter_deps="gpl"
2637 cover_rect_filter_deps="avcodec avformat gpl"
2638 cropdetect_filter_deps="gpl"
2639 delogo_filter_deps="gpl"
2640 deshake_filter_select="pixelutils"
2641 drawtext_filter_deps="libfreetype"
2642 ebur128_filter_deps="gpl"
2643 eq_filter_deps="gpl"
2644 fftfilt_filter_deps="avcodec"
2645 fftfilt_filter_select="rdft"
2646 flite_filter_deps="libflite"
2647 find_rect_filter_deps="avcodec avformat gpl"
2648 frei0r_filter_deps="frei0r dlopen"
2649 frei0r_src_filter_deps="frei0r dlopen"
2650 fspp_filter_deps="gpl"
2651 geq_filter_deps="gpl"
2652 histeq_filter_deps="gpl"
2653 hqdn3d_filter_deps="gpl"
2654 interlace_filter_deps="gpl"
2655 kerndeint_filter_deps="gpl"
2656 ladspa_filter_deps="ladspa dlopen"
2657 mcdeint_filter_deps="avcodec gpl"
2658 movie_filter_deps="avcodec avformat"
2659 mpdecimate_filter_deps="gpl"
2660 mpdecimate_filter_select="pixelutils"
2661 mptestsrc_filter_deps="gpl"
2662 negate_filter_deps="lut_filter"
2663 perspective_filter_deps="gpl"
2664 pp7_filter_deps="gpl"
2665 ocv_filter_deps="libopencv"
2666 owdenoise_filter_deps="gpl"
2667 pan_filter_deps="swresample"
2668 phase_filter_deps="gpl"
2669 pp_filter_deps="gpl postproc"
2670 pullup_filter_deps="gpl"
2671 removelogo_filter_deps="avcodec avformat swscale"
2672 repeatfields_filter_deps="gpl"
2673 resample_filter_deps="avresample"
2674 sab_filter_deps="gpl swscale"
2675 scale_filter_deps="swscale"
2676 select_filter_select="pixelutils"
2677 smartblur_filter_deps="gpl swscale"
2678 showspectrum_filter_deps="avcodec"
2679 showspectrum_filter_select="rdft"
2680 spp_filter_deps="gpl avcodec"
2681 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2682 stereo3d_filter_deps="gpl"
2683 subtitles_filter_deps="avformat avcodec libass"
2684 super2xsai_filter_deps="gpl"
2685 tinterlace_filter_deps="gpl"
2686 vidstabdetect_filter_deps="libvidstab"
2687 vidstabtransform_filter_deps="libvidstab"
2688 pixfmts_super2xsai_test_deps="super2xsai_filter"
2689 tinterlace_merge_test_deps="tinterlace_filter"
2690 tinterlace_pad_test_deps="tinterlace_filter"
2691 uspp_filter_deps="gpl avcodec"
2692 zmq_filter_deps="libzmq"
2693 zoompan_filter_deps="swscale"
2694
2695 # examples
2696 avio_reading="avformat avcodec avutil"
2697 avio_list_dir="avformat avutil"
2698 avcodec_example_deps="avcodec avutil"
2699 decoding_encoding_example_deps="avcodec avformat avutil"
2700 demuxing_decoding_example_deps="avcodec avformat avutil"
2701 extract_mvs_example_deps="avcodec avformat avutil"
2702 filter_audio_example_deps="avfilter avutil"
2703 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2704 filtering_video_example_deps="avfilter avcodec avformat avutil"
2705 metadata_example_deps="avformat avutil"
2706 muxing_example_deps="avcodec avformat avutil swscale"
2707 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2708 remuxing_example_deps="avcodec avformat avutil"
2709 resampling_audio_example_deps="avutil swresample"
2710 scaling_video_example_deps="avutil swscale"
2711 transcode_aac_example_deps="avcodec avformat swresample"
2712 transcoding_example_deps="avfilter avcodec avformat avutil"
2713
2714 # libraries, in linking order
2715 avcodec_deps="avutil"
2716 avdevice_deps="avformat avcodec avutil"
2717 avfilter_deps="avutil"
2718 avformat_deps="avcodec avutil"
2719 avresample_deps="avutil"
2720 postproc_deps="avutil gpl"
2721 swresample_deps="avutil"
2722 swscale_deps="avutil"
2723
2724 # programs
2725 ffmpeg_deps="avcodec avfilter avformat swresample"
2726 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2727                null_filter
2728                setpts_filter trim_filter"
2729 ffplay_deps="avcodec avformat swscale swresample sdl"
2730 ffplay_libs='$sdl_libs'
2731 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2732 ffprobe_deps="avcodec avformat"
2733 ffserver_deps="avformat fork sarestart"
2734 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2735
2736 # documentation
2737 podpages_deps="perl"
2738 manpages_deps="perl pod2man"
2739 htmlpages_deps="perl"
2740 htmlpages_deps_any="makeinfo_html texi2html"
2741 txtpages_deps="perl makeinfo"
2742 doc_deps_any="manpages htmlpages podpages txtpages"
2743
2744 # default parameters
2745
2746 logfile="config.log"
2747
2748 # installation paths
2749 prefix_default="/usr/local"
2750 bindir_default='${prefix}/bin'
2751 datadir_default='${prefix}/share/ffmpeg'
2752 docdir_default='${prefix}/share/doc/ffmpeg'
2753 incdir_default='${prefix}/include'
2754 libdir_default='${prefix}/lib'
2755 mandir_default='${prefix}/share/man'
2756
2757 # toolchain
2758 ar_default="ar"
2759 cc_default="gcc"
2760 cxx_default="g++"
2761 host_cc_default="gcc"
2762 cp_f="cp -f"
2763 doxygen_default="doxygen"
2764 install="install"
2765 ln_s="ln -s -f"
2766 nm_default="nm -g"
2767 objformat="elf"
2768 pkg_config_default=pkg-config
2769 if ranlib 2>&1 | grep -q "\-D "; then
2770     ranlib_default="ranlib -D"
2771 else
2772     ranlib_default="ranlib"
2773 fi
2774 strip_default="strip"
2775 yasmexe_default="yasm"
2776 windres_default="windres"
2777
2778 # OS
2779 target_os_default=$(tolower $(uname -s))
2780 host_os=$target_os_default
2781
2782 # machine
2783 if test "$target_os_default" = aix; then
2784     arch_default=$(uname -p)
2785     strip_default="strip -X32_64"
2786 else
2787     arch_default=$(uname -m)
2788 fi
2789 cpu="generic"
2790 intrinsics="none"
2791
2792 # configurable options
2793 enable $PROGRAM_LIST
2794 enable $DOCUMENT_LIST
2795 enable $EXAMPLE_LIST
2796 enable $(filter_out avresample $LIBRARY_LIST)
2797 enable stripping
2798
2799 enable asm
2800 enable debug
2801 enable doc
2802 enable faan faandct faanidct
2803 enable optimizations
2804 enable runtime_cpudetect
2805 enable safe_bitstream_reader
2806 enable static
2807 enable swscale_alpha
2808 enable valgrind_backtrace
2809
2810 sws_max_filter_size_default=256
2811 set_default sws_max_filter_size
2812
2813 # Enable hwaccels by default.
2814 enable dxva2 vaapi vda vdpau xvmc
2815 enable xlib
2816
2817 # build settings
2818 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2819 LIBPREF="lib"
2820 LIBSUF=".a"
2821 FULLNAME='$(NAME)$(BUILDSUF)'
2822 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2823 SLIBPREF="lib"
2824 SLIBSUF=".so"
2825 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2826 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2827 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2828 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2829 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2830 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2831
2832 asflags_filter=echo
2833 cflags_filter=echo
2834 ldflags_filter=echo
2835
2836 AS_C='-c'
2837 AS_O='-o $@'
2838 CC_C='-c'
2839 CC_E='-E -o $@'
2840 CC_O='-o $@'
2841 CXX_C='-c'
2842 CXX_O='-o $@'
2843 LD_O='-o $@'
2844 LD_LIB='-l%'
2845 LD_PATH='-L'
2846 HOSTCC_C='-c'
2847 HOSTCC_E='-E -o $@'
2848 HOSTCC_O='-o $@'
2849 HOSTLD_O='-o $@'
2850
2851 host_libs='-lm'
2852 host_cflags_filter=echo
2853 host_ldflags_filter=echo
2854
2855 target_path='$(CURDIR)'
2856
2857 # since the object filename is not given with the -MM flag, the compiler
2858 # is only able to print the basename, and we must add the path ourselves
2859 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2860 DEPFLAGS='-MM'
2861
2862 # find source path
2863 if test -f configure; then
2864     source_path=.
2865 else
2866     source_path=$(cd $(dirname "$0"); pwd)
2867     echo "$source_path" | grep -q '[[:blank:]]' &&
2868         die "Out of tree builds are impossible with whitespace in source path."
2869     test -e "$source_path/config.h" &&
2870         die "Out of tree builds are impossible with config.h in source dir."
2871 fi
2872
2873 for v in "$@"; do
2874     r=${v#*=}
2875     l=${v%"$r"}
2876     r=$(sh_quote "$r")
2877     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2878 done
2879
2880 find_things(){
2881     thing=$1
2882     pattern=$2
2883     file=$source_path/$3
2884     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2885 }
2886
2887 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2888 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2889 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2890 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2891 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2892 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2893 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2894 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2895 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2896 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2897 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2898
2899 ALL_COMPONENTS="
2900     $BSF_LIST
2901     $DECODER_LIST
2902     $DEMUXER_LIST
2903     $ENCODER_LIST
2904     $FILTER_LIST
2905     $HWACCEL_LIST
2906     $INDEV_LIST
2907     $MUXER_LIST
2908     $OUTDEV_LIST
2909     $PARSER_LIST
2910     $PROTOCOL_LIST
2911 "
2912
2913 for n in $COMPONENT_LIST; do
2914     v=$(toupper ${n%s})_LIST
2915     eval enable \$$v
2916     eval ${n}_if_any="\$$v"
2917 done
2918
2919 enable $ARCH_EXT_LIST
2920
2921 die_unknown(){
2922     echo "Unknown option \"$1\"."
2923     echo "See $0 --help for available options."
2924     exit 1
2925 }
2926
2927 print_3_columns() {
2928     cat | tr ' ' '\n' | sort | pr -r -3 -t
2929 }
2930
2931 show_list() {
2932     suffix=_$1
2933     shift
2934     echo $* | sed s/$suffix//g | print_3_columns
2935     exit 0
2936 }
2937
2938 rand_list(){
2939     IFS=', '
2940     set -- $*
2941     unset IFS
2942     for thing; do
2943         comp=${thing%:*}
2944         prob=${thing#$comp}
2945         prob=${prob#:}
2946         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2947         echo "prob ${prob:-0.5}"
2948         printf '%s\n' $comp
2949     done
2950 }
2951
2952 do_random(){
2953     action=$1
2954     shift
2955     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2956     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2957 }
2958
2959 for opt do
2960     optval="${opt#*=}"
2961     case "$opt" in
2962         --extra-ldflags=*)
2963             add_ldflags $optval
2964         ;;
2965         --extra-ldexeflags=*)
2966             add_ldexeflags $optval
2967         ;;
2968         --extra-libs=*)
2969             add_extralibs $optval
2970         ;;
2971         --disable-devices)
2972             disable $INDEV_LIST $OUTDEV_LIST
2973         ;;
2974         --enable-debug=*)
2975             debuglevel="$optval"
2976         ;;
2977         --disable-programs)
2978             disable $PROGRAM_LIST
2979         ;;
2980         --disable-everything)
2981             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2982         ;;
2983         --disable-all)
2984             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2985             disable $LIBRARY_LIST $PROGRAM_LIST doc
2986         ;;
2987         --enable-random|--disable-random)
2988             action=${opt%%-random}
2989             do_random ${action#--} $COMPONENT_LIST
2990         ;;
2991         --enable-random=*|--disable-random=*)
2992             action=${opt%%-random=*}
2993             do_random ${action#--} $optval
2994         ;;
2995         --enable-*=*|--disable-*=*)
2996             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2997             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2998             eval list=\$$(toupper $thing)_LIST
2999             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3000             list=$(filter "$name" $list)
3001             [ "$list" = "" ] && warn "Option $opt did not match anything"
3002             $action $list
3003         ;;
3004         --enable-?*|--disable-?*)
3005             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3006             if is_in $option $COMPONENT_LIST; then
3007                 test $action = disable && action=unset
3008                 eval $action \$$(toupper ${option%s})_LIST
3009             elif is_in $option $CMDLINE_SELECT; then
3010                 $action $option
3011             else
3012                 die_unknown $opt
3013             fi
3014         ;;
3015         --list-*)
3016             NAME="${opt#--list-}"
3017             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3018             NAME=${NAME%s}
3019             eval show_list $NAME \$$(toupper $NAME)_LIST
3020         ;;
3021         --help|-h) show_help
3022         ;;
3023         --fatal-warnings) enable fatal_warnings
3024         ;;
3025         *)
3026             optname="${opt%%=*}"
3027             optname="${optname#--}"
3028             optname=$(echo "$optname" | sed 's/-/_/g')
3029             if is_in $optname $CMDLINE_SET; then
3030                 eval $optname='$optval'
3031             elif is_in $optname $CMDLINE_APPEND; then
3032                 append $optname "$optval"
3033             else
3034                 die_unknown $opt
3035             fi
3036         ;;
3037     esac
3038 done
3039
3040 disabled logging && logfile=/dev/null
3041
3042 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3043 set >> $logfile
3044
3045 test -n "$valgrind" && toolchain="valgrind-memcheck"
3046
3047 case "$toolchain" in
3048     clang-asan)
3049         cc_default="clang"
3050         add_cflags  -fsanitize=address
3051         add_ldflags -fsanitize=address
3052     ;;
3053     clang-tsan)
3054         cc_default="clang"
3055         add_cflags  -fsanitize=thread -pie
3056         add_ldflags -fsanitize=thread -pie
3057     ;;
3058     clang-usan)
3059         cc_default="clang"
3060         add_cflags  -fsanitize=undefined
3061         add_ldflags -fsanitize=undefined
3062     ;;
3063     gcc-asan)
3064         cc_default="gcc"
3065         add_cflags  -fsanitize=address
3066         add_ldflags -fsanitize=address
3067     ;;
3068     gcc-tsan)
3069         cc_default="gcc"
3070         add_cflags  -fsanitize=thread -pie -fPIC
3071         add_ldflags -fsanitize=thread -pie -fPIC
3072     ;;
3073     gcc-usan)
3074         cc_default="gcc"
3075         add_cflags  -fsanitize=undefined
3076         add_ldflags -fsanitize=undefined
3077     ;;
3078     valgrind-massif)
3079         target_exec_default=${valgrind:-"valgrind"}
3080         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"
3081     ;;
3082     valgrind-memcheck)
3083         target_exec_default=${valgrind:-"valgrind"}
3084         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3085     ;;
3086     msvc)
3087         # Check whether the current MSVC version needs the C99 converter.
3088         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3089         # support enough of C99 to build ffmpeg. Default to the new
3090         # behaviour if the regexp was unable to match anything, since this
3091         # successfully parses the version number of existing supported
3092         # versions that require the converter (MSVC 2010 and 2012).
3093         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3094         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3095             cc_default="cl"
3096         else
3097             cc_default="c99wrap cl"
3098         fi
3099         ld_default="link"
3100         nm_default="dumpbin -symbols"
3101         ar_default="lib"
3102         target_os_default="win32"
3103         # Use a relative path for TMPDIR. This makes sure all the
3104         # ffconf temp files are written with a relative path, avoiding
3105         # issues with msys/win32 path conversion for MSVC parameters
3106         # such as -Fo<file> or -out:<file>.
3107         TMPDIR=.
3108     ;;
3109     icl)
3110         cc_default="icl"
3111         ld_default="xilink"
3112         nm_default="dumpbin -symbols"
3113         ar_default="xilib"
3114         target_os_default="win32"
3115         TMPDIR=.
3116     ;;
3117     gcov)
3118         add_cflags  -fprofile-arcs -ftest-coverage
3119         add_ldflags -fprofile-arcs -ftest-coverage
3120     ;;
3121     hardened)
3122         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3123         add_cflags   -fno-strict-overflow -fstack-protector-all
3124         add_ldflags  -Wl,-z,relro -Wl,-z,now
3125     ;;
3126     ?*)
3127         die "Unknown toolchain $toolchain"
3128     ;;
3129 esac
3130
3131 test -n "$cross_prefix" && enable cross_compile
3132
3133 if enabled cross_compile; then
3134     test -n "$arch" && test -n "$target_os" ||
3135         die "Must specify target arch and OS when cross-compiling"
3136 fi
3137
3138 ar_default="${cross_prefix}${ar_default}"
3139 cc_default="${cross_prefix}${cc_default}"
3140 cxx_default="${cross_prefix}${cxx_default}"
3141 nm_default="${cross_prefix}${nm_default}"
3142 pkg_config_default="${cross_prefix}${pkg_config_default}"
3143 ranlib_default="${cross_prefix}${ranlib_default}"
3144 strip_default="${cross_prefix}${strip_default}"
3145 windres_default="${cross_prefix}${windres_default}"
3146
3147 sysinclude_default="${sysroot}/usr/include"
3148
3149 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3150     target_exec target_os yasmexe
3151 enabled cross_compile || host_cc_default=$cc
3152 set_default host_cc
3153
3154 pkg_config_fail_message=""
3155 if ! $pkg_config --version >/dev/null 2>&1; then
3156     warn "$pkg_config not found, library detection may fail."
3157     pkg_config=false
3158 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3159     pkg_config_fail_message="
3160 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3161 fi
3162
3163 if test $doxygen != $doxygen_default && \
3164   ! $doxygen --version >/dev/null 2>&1; then
3165     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3166 fi
3167
3168 exesuf() {
3169     case $1 in
3170         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3171     esac
3172 }
3173
3174 EXESUF=$(exesuf $target_os)
3175 HOSTEXESUF=$(exesuf $host_os)
3176
3177 # set temporary file name
3178 : ${TMPDIR:=$TEMPDIR}
3179 : ${TMPDIR:=$TMP}
3180 : ${TMPDIR:=/tmp}
3181
3182 if [ -n "$tempprefix" ] ; then
3183     mktemp(){
3184         echo $tempprefix.${HOSTNAME}.${UID}
3185     }
3186 elif ! check_cmd mktemp -u XXXXXX; then
3187     # simple replacement for missing mktemp
3188     # NOT SAFE FOR GENERAL USE
3189     mktemp(){
3190         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3191     }
3192 fi
3193
3194 tmpfile(){
3195     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3196         (set -C; exec > $tmp) 2>/dev/null ||
3197         die "Unable to create temporary file in $TMPDIR."
3198     append TMPFILES $tmp
3199     eval $1=$tmp
3200 }
3201
3202 trap 'rm -f -- $TMPFILES' EXIT
3203
3204 tmpfile TMPASM .asm
3205 tmpfile TMPC   .c
3206 tmpfile TMPCPP .cpp
3207 tmpfile TMPE   $EXESUF
3208 tmpfile TMPH   .h
3209 tmpfile TMPM   .m
3210 tmpfile TMPO   .o
3211 tmpfile TMPS   .S
3212 tmpfile TMPSH  .sh
3213 tmpfile TMPV   .ver
3214
3215 unset -f mktemp
3216
3217 chmod +x $TMPE
3218
3219 # make sure we can execute files in $TMPDIR
3220 cat > $TMPSH 2>> $logfile <<EOF
3221 #! /bin/sh
3222 EOF
3223 chmod +x $TMPSH >> $logfile 2>&1
3224 if ! $TMPSH >> $logfile 2>&1; then
3225     cat <<EOF
3226 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3227 variable to another directory and make sure that it is not mounted noexec.
3228 EOF
3229     die "Sanity test failed."
3230 fi
3231
3232 armasm_flags(){
3233     for flag; do
3234         case $flag in
3235             # Filter out MSVC cl.exe options from cflags that shouldn't
3236             # be passed to gas-preprocessor
3237             -M[TD]*)                                            ;;
3238             *)                  echo $flag                      ;;
3239         esac
3240    done
3241 }
3242
3243 ccc_flags(){
3244     for flag; do
3245         case $flag in
3246             -std=c99)           echo -c99                       ;;
3247             -mcpu=*)            echo -arch ${flag#*=}           ;;
3248             -mieee)             echo -ieee                      ;;
3249             -O*|-fast)          echo $flag                      ;;
3250             -fno-math-errno)    echo -assume nomath_errno       ;;
3251             -g)                 echo -g3                        ;;
3252             -Wall)              echo -msg_enable level2         ;;
3253             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3254             -Wl,*)              echo $flag                      ;;
3255             -f*|-W*)                                            ;;
3256             *)                  echo $flag                      ;;
3257         esac
3258    done
3259 }
3260
3261 cparser_flags(){
3262     for flag; do
3263         case $flag in
3264             -Wno-switch)             echo -Wno-switch-enum ;;
3265             -Wno-format-zero-length) ;;
3266             -Wdisabled-optimization) ;;
3267             -Wno-pointer-sign)       echo -Wno-other ;;
3268             *)                       echo $flag ;;
3269         esac
3270     done
3271 }
3272
3273 msvc_common_flags(){
3274     for flag; do
3275         case $flag in
3276             # In addition to specifying certain flags under the compiler
3277             # specific filters, they must be specified here as well or else the
3278             # generic catch all at the bottom will print the original flag.
3279             -Wall)                ;;
3280             -std=c99)             ;;
3281             # Common flags
3282             -fomit-frame-pointer) ;;
3283             -g)                   echo -Z7 ;;
3284             -fno-math-errno)      ;;
3285             -fno-common)          ;;
3286             -fno-signed-zeros)    ;;
3287             -fPIC)                ;;
3288             -mthumb)              ;;
3289             -march=*)             ;;
3290             -lz)                  echo zlib.lib ;;
3291             -lavifil32)           echo vfw32.lib ;;
3292             -lavicap32)           echo vfw32.lib user32.lib ;;
3293             -l*)                  echo ${flag#-l}.lib ;;
3294             -L*)                  echo -libpath:${flag#-L} ;;
3295             *)                    echo $flag ;;
3296         esac
3297     done
3298 }
3299
3300 msvc_flags(){
3301     msvc_common_flags "$@"
3302     for flag; do
3303         case $flag in
3304             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3305                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3306                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3307                                        -wd4307 \
3308                                        -wd4273 -wd4554 -wd4701 ;;
3309         esac
3310     done
3311 }
3312
3313 icl_flags(){
3314     msvc_common_flags "$@"
3315     for flag; do
3316         case $flag in
3317             # Despite what Intel's documentation says -Wall, which is supported
3318             # on Windows, does enable remarks so disable them here.
3319             -Wall)                echo $flag -Qdiag-disable:remark ;;
3320             -std=c99)             echo -Qstd=c99 ;;
3321             -flto)                echo -ipo ;;
3322         esac
3323     done
3324 }
3325
3326 icc_flags(){
3327     for flag; do
3328         case $flag in
3329             -flto)                echo -ipo ;;
3330             *)                    echo $flag ;;
3331         esac
3332     done
3333 }
3334
3335 pgi_flags(){
3336     for flag; do
3337         case $flag in
3338             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3339             -fomit-frame-pointer) echo -Mnoframe ;;
3340             -g)                   echo -gopt ;;
3341             *)                    echo $flag ;;
3342         esac
3343     done
3344 }
3345
3346 suncc_flags(){
3347     for flag; do
3348         case $flag in
3349             -march=*|-mcpu=*)
3350                 case "${flag#*=}" in
3351                     native)                   echo -xtarget=native       ;;
3352                     v9|niagara)               echo -xarch=sparc          ;;
3353                     ultrasparc)               echo -xarch=sparcvis       ;;
3354                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3355                     i586|pentium)             echo -xchip=pentium        ;;
3356                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3357                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3358                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3359                     pentium4*)          echo -xtarget=pentium4           ;;
3360                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3361                     *-sse3)             echo -xarch=sse3                 ;;
3362                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3363                     bonnell)                   echo -xarch=ssse3         ;;
3364                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3365                     westmere)                  echo -xtarget=westmere    ;;
3366                     silvermont)                echo -xarch=sse4_2        ;;
3367                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3368                     core-avx*|ivybridge|haswell|broadwell)
3369                                                echo -xarch=avx           ;;
3370                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3371                     btver1)                    echo -xarch=amdsse4a      ;;
3372                     btver2|bdver*)             echo -xarch=avx           ;;
3373                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3374                     k8|opteron|athlon64|athlon-fx)
3375                                                echo -xarch=sse2a         ;;
3376                     athlon*)                   echo -xarch=pentium_proa  ;;
3377                 esac
3378                 ;;
3379             -std=c99)             echo -xc99              ;;
3380             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3381             -fPIC)                echo -KPIC -xcode=pic32 ;;
3382             -W*,*)                echo $flag              ;;
3383             -f*-*|-W*|-mimpure-text)                      ;;
3384             -shared)              echo -G                 ;;
3385             *)                    echo $flag              ;;
3386         esac
3387     done
3388 }
3389
3390 tms470_flags(){
3391     for flag; do
3392         case $flag in
3393             -march=*|-mcpu=*)
3394                 case "${flag#*=}" in
3395                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3396                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3397                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3398                     armv6*|arm11*)          echo -mv=6   ;;
3399                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3400                                             echo -mv=5e  ;;
3401                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3402                 esac
3403                 ;;
3404             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3405             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3406             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3407             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3408             -msoft-float)   echo --float_support=vfplib       ;;
3409             -O[0-3]|-mf=*)  echo $flag                        ;;
3410             -g)             echo -g -mn                       ;;
3411             -pds=*)         echo $flag                        ;;
3412             -D*|-I*)        echo $flag                        ;;
3413             --gcc|--abi=*)  echo $flag                        ;;
3414             -me)            echo $flag                        ;;
3415         esac
3416     done
3417 }
3418
3419 probe_cc(){
3420     pfx=$1
3421     _cc=$2
3422
3423     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3424     unset _ld_o _ldflags _ld_lib _ld_path
3425     unset _depflags _DEPCMD _DEPFLAGS
3426     _flags_filter=echo
3427
3428     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3429         true # no-op to avoid reading stdin in following checks
3430     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3431         _type=llvm_gcc
3432         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3433         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3434         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3435         _cflags_speed='-O3'
3436         _cflags_size='-Os'
3437     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3438         _type=gcc
3439         gcc_version=$($_cc --version | head -n1)
3440         gcc_basever=$($_cc -dumpversion)
3441         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3442         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3443         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3444         if ! $_cc -dumpversion | grep -q '^2\.'; then
3445             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3446         fi
3447         _cflags_speed='-O3'
3448         _cflags_size='-Os'
3449     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3450         _type=icc
3451         _ident=$($_cc --version | head -n1)
3452         _depflags='-MMD'
3453         _cflags_speed='-O3'
3454         _cflags_size='-Os'
3455         _cflags_noopt='-O1'
3456         _flags_filter=icc_flags
3457     elif $_cc -v 2>&1 | grep -q xlc; then
3458         _type=xlc
3459         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3460         _cflags_speed='-O5'
3461         _cflags_size='-O5 -qcompact'
3462     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3463         _type=ccc
3464         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3465         _DEPFLAGS='-M'
3466         _cflags_speed='-fast'
3467         _cflags_size='-O1'
3468         _flags_filter=ccc_flags
3469     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3470         test -d "$sysroot" || die "No valid sysroot specified."
3471         _type=armcc
3472         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3473         armcc_conf="$PWD/armcc.conf"
3474         $_cc --arm_linux_configure                 \
3475              --arm_linux_config_file="$armcc_conf" \
3476              --configure_sysroot="$sysroot"        \
3477              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3478              die "Error creating armcc configuration file."
3479         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3480         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3481         as_default="${cross_prefix}gcc"
3482         _depflags='-MMD'
3483         _cflags_speed='-O3'
3484         _cflags_size='-Os'
3485     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3486         _type=tms470
3487         _ident=$($_cc -version | head -n1 | tr -s ' ')
3488         _flags='--gcc --abi=eabi -me'
3489         _cc_e='-ppl -fe=$@'
3490         _cc_o='-fe=$@'
3491         _depflags='-ppa -ppd=$(@:.o=.d)'
3492         _cflags_speed='-O3 -mf=5'
3493         _cflags_size='-O3 -mf=2'
3494         _flags_filter=tms470_flags
3495     elif $_cc -v 2>&1 | grep -q clang; then
3496         _type=clang
3497         _ident=$($_cc --version | head -n1)
3498         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3499         _cflags_speed='-O3'
3500         _cflags_size='-Os'
3501     elif $_cc -V 2>&1 | grep -q Sun; then
3502         _type=suncc
3503         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3504         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3505         _DEPFLAGS='-xM1 -xc99'
3506         _ldflags='-std=c99'
3507         _cflags_speed='-O5'
3508         _cflags_size='-O5 -xspace'
3509         _flags_filter=suncc_flags
3510     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3511         _type=pathscale
3512         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3513         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3514         _cflags_speed='-O2'
3515         _cflags_size='-Os'
3516         _flags_filter='filter_out -Wdisabled-optimization'
3517     elif $_cc -v 2>&1 | grep -q Open64; then
3518         _type=open64
3519         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3520         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3521         _cflags_speed='-O2'
3522         _cflags_size='-Os'
3523         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3524     elif $_cc -V 2>&1 | grep -q Portland; then
3525         _type=pgi
3526         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3527         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3528         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3529         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3530         _cflags_noopt="-O"
3531         _flags_filter=pgi_flags
3532     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3533         _type=armasm
3534         _ident=$($_cc | head -n1)
3535         # 4509: "This form of conditional instruction is deprecated"
3536         _flags="-nologo -ignore 4509"
3537         _flags_filter=armasm_flags
3538     elif $_cc 2>&1 | grep -q Intel; then
3539         _type=icl
3540         _ident=$($_cc 2>&1 | head -n1)
3541         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3542         # Not only is O3 broken on 13.x+ but it is slower on all previous
3543         # versions (tested) as well.
3544         _cflags_speed="-O2"
3545         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3546         if $_cc 2>&1 | grep -q Linker; then
3547             _ld_o='-out:$@'
3548         else
3549             _ld_o='-Fe$@'
3550         fi
3551         _cc_o='-Fo$@'
3552         _cc_e='-P'
3553         _flags_filter=icl_flags
3554         _ld_lib='lib%.a'
3555         _ld_path='-libpath:'
3556         # -Qdiag-error to make icl error when seeing certain unknown arguments
3557         _flags='-nologo -Qdiag-error:4044,10157'
3558         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3559         # with MSVC which enables it by default.
3560         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3561         if [ $pfx = hostcc ]; then
3562             append _cflags -Dsnprintf=_snprintf
3563         fi
3564         disable stripping
3565     elif $_cc 2>&1 | grep -q Microsoft; then
3566         _type=msvc
3567         _ident=$($_cc 2>&1 | head -n1)
3568         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3569         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3570         _cflags_speed="-O2"
3571         _cflags_size="-O1"
3572         if $_cc 2>&1 | grep -q Linker; then
3573             _ld_o='-out:$@'
3574         else
3575             _ld_o='-Fe$@'
3576         fi
3577         _cc_o='-Fo$@'
3578         _cc_e='-P -Fi$@'
3579         _flags_filter=msvc_flags
3580         _ld_lib='lib%.a'
3581         _ld_path='-libpath:'
3582         _flags='-nologo'
3583         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3584         if [ $pfx = hostcc ]; then
3585             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3586                 append _cflags -Dsnprintf=_snprintf
3587             fi
3588         fi
3589         disable stripping
3590     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3591         _type=cparser
3592         _ident=$($_cc --version | head -n1)
3593         _depflags='-MMD'
3594         _cflags_speed='-O4'
3595         _cflags_size='-O2'
3596         _flags_filter=cparser_flags
3597     fi
3598
3599     eval ${pfx}_type=\$_type
3600     eval ${pfx}_ident=\$_ident
3601 }
3602
3603 set_ccvars(){
3604     eval ${1}_C=\${_cc_c-\${${1}_C}}
3605     eval ${1}_E=\${_cc_e-\${${1}_E}}
3606     eval ${1}_O=\${_cc_o-\${${1}_O}}
3607
3608     if [ -n "$_depflags" ]; then
3609         eval ${1}_DEPFLAGS=\$_depflags
3610     else
3611         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3612         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3613         eval DEP${1}FLAGS=\$_flags
3614     fi
3615 }
3616
3617 probe_cc cc "$cc"
3618 cflags_filter=$_flags_filter
3619 cflags_speed=$_cflags_speed
3620 cflags_size=$_cflags_size
3621 cflags_noopt=$_cflags_noopt
3622 add_cflags $_flags $_cflags
3623 cc_ldflags=$_ldflags
3624 set_ccvars CC
3625
3626 probe_cc hostcc "$host_cc"
3627 host_cflags_filter=$_flags_filter
3628 add_host_cflags  $_flags $_cflags
3629 set_ccvars HOSTCC
3630
3631 test -n "$cc_type" && enable $cc_type ||
3632     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3633
3634 : ${as_default:=$cc}
3635 : ${dep_cc_default:=$cc}
3636 : ${ld_default:=$cc}
3637 : ${host_ld_default:=$host_cc}
3638 set_default ar as dep_cc ld host_ld windres
3639
3640 probe_cc as "$as"
3641 asflags_filter=$_flags_filter
3642 add_asflags $_flags $_cflags
3643 set_ccvars AS
3644
3645 probe_cc ld "$ld"
3646 ldflags_filter=$_flags_filter
3647 add_ldflags $_flags $_ldflags
3648 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3649 LD_O=${_ld_o-$LD_O}
3650 LD_LIB=${_ld_lib-$LD_LIB}
3651 LD_PATH=${_ld_path-$LD_PATH}
3652
3653 probe_cc hostld "$host_ld"
3654 host_ldflags_filter=$_flags_filter
3655 add_host_ldflags $_flags $_ldflags
3656 HOSTLD_O=${_ld_o-$HOSTLD_O}
3657
3658 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3659     probe_cc depcc "$dep_cc"
3660     CCDEP=${_DEPCMD:-$DEPCMD}
3661     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3662     DEPCCFLAGS=$_flags
3663 fi
3664
3665 if $ar 2>&1 | grep -q Microsoft; then
3666     arflags="-nologo"
3667     ar_o='-out:$@'
3668 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3669     arflags="rq"
3670     ar_o='$@'
3671 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3672     arflags='-Xany -r -c'
3673     ar_o='$@'
3674 elif $ar 2>&1 | grep -q "\[D\] "; then
3675     arflags="rcD"
3676     ar_o='$@'
3677 else
3678     arflags="rc"
3679     ar_o='$@'
3680 fi
3681
3682 add_cflags $extra_cflags
3683 add_cxxflags $extra_cxxflags
3684 add_asflags $extra_cflags
3685
3686 if test -n "$sysroot"; then
3687     case "$cc_type" in
3688         gcc|llvm_gcc|clang)
3689             add_cppflags --sysroot="$sysroot"
3690             add_ldflags --sysroot="$sysroot"
3691 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3692             add_cppflags -isysroot "$sysroot"
3693             add_ldflags -isysroot "$sysroot"
3694         ;;
3695         tms470)
3696             add_cppflags -I"$sysinclude"
3697             add_ldflags  --sysroot="$sysroot"
3698         ;;
3699     esac
3700 fi
3701
3702 if test "$cpu" = host; then
3703     enabled cross_compile &&
3704         die "--cpu=host makes no sense when cross-compiling."
3705
3706     case "$cc_type" in
3707         gcc|llvm_gcc)
3708             check_native(){
3709                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3710                 sed -n "/cc1.*$1=/{
3711                             s/.*$1=\\([^ ]*\\).*/\\1/
3712                             p
3713                             q
3714                         }" $TMPE
3715             }
3716             cpu=$(check_native -march || check_native -mcpu)
3717         ;;
3718     esac
3719
3720     test "${cpu:-host}" = host &&
3721         die "--cpu=host not supported with compiler $cc"
3722 fi
3723
3724 # Deal with common $arch aliases
3725 case "$arch" in
3726     aarch64|arm64)
3727         arch="aarch64"
3728     ;;
3729     arm*|iPad*|iPhone*)
3730         arch="arm"
3731     ;;
3732     mips*|IP*)
3733         arch="mips"
3734     ;;
3735     parisc*|hppa*)
3736         arch="parisc"
3737     ;;
3738     "Power Macintosh"|ppc*|powerpc*)
3739         arch="ppc"
3740     ;;
3741     s390|s390x)
3742         arch="s390"
3743     ;;
3744     sh4|sh)
3745         arch="sh4"
3746     ;;
3747     sun4u|sparc*)
3748         arch="sparc"
3749     ;;
3750     tilegx|tile-gx)
3751         arch="tilegx"
3752     ;;
3753     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3754         arch="x86"
3755     ;;
3756 esac
3757
3758 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3759 enable $arch
3760
3761 # Add processor-specific flags
3762 if enabled aarch64; then
3763
3764     case $cpu in
3765         armv*)
3766             cpuflags="-march=$cpu"
3767         ;;
3768         *)
3769             cpuflags="-mcpu=$cpu"
3770         ;;
3771     esac
3772
3773 elif enabled alpha; then
3774
3775     cpuflags="-mcpu=$cpu"
3776
3777 elif enabled arm; then
3778
3779     check_arm_arch() {
3780         check_cpp_condition stddef.h \
3781             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3782             $cpuflags
3783     }
3784
3785     probe_arm_arch() {
3786         if   check_arm_arch 4;        then echo armv4;
3787         elif check_arm_arch 4T;       then echo armv4t;
3788         elif check_arm_arch 5;        then echo armv5;
3789         elif check_arm_arch 5E;       then echo armv5e;
3790         elif check_arm_arch 5T;       then echo armv5t;
3791         elif check_arm_arch 5TE;      then echo armv5te;
3792         elif check_arm_arch 5TEJ;     then echo armv5te;
3793         elif check_arm_arch 6;        then echo armv6;
3794         elif check_arm_arch 6J;       then echo armv6j;
3795         elif check_arm_arch 6K;       then echo armv6k;
3796         elif check_arm_arch 6Z;       then echo armv6z;
3797         elif check_arm_arch 6ZK;      then echo armv6zk;
3798         elif check_arm_arch 6T2;      then echo armv6t2;
3799         elif check_arm_arch 7;        then echo armv7;
3800         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3801         elif check_arm_arch 7S;       then echo armv7-a;
3802         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3803         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3804         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3805         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3806         fi
3807     }
3808
3809     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3810
3811     case $cpu in
3812         armv*)
3813             cpuflags="-march=$cpu"
3814             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3815         ;;
3816         *)
3817             cpuflags="-mcpu=$cpu"
3818             case $cpu in
3819                 cortex-a*)                               subarch=armv7a  ;;
3820                 cortex-r*)                               subarch=armv7r  ;;
3821                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3822                 arm11*)                                  subarch=armv6   ;;
3823                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3824                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3825                 *)                             subarch=$(probe_arm_arch) ;;
3826             esac
3827         ;;
3828     esac
3829
3830     case "$subarch" in
3831         armv5t*)    enable fast_clz                ;;
3832         armv[6-8]*)
3833             enable fast_clz
3834             disabled fast_unaligned || enable fast_unaligned
3835             ;;
3836     esac
3837
3838 elif enabled avr32; then
3839
3840     case $cpu in
3841         ap7[02]0[0-2])
3842             subarch="avr32_ap"
3843             cpuflags="-mpart=$cpu"
3844         ;;
3845         ap)
3846             subarch="avr32_ap"
3847             cpuflags="-march=$cpu"
3848         ;;
3849         uc3[ab]*)
3850             subarch="avr32_uc"
3851             cpuflags="-mcpu=$cpu"
3852         ;;
3853         uc)
3854             subarch="avr32_uc"
3855             cpuflags="-march=$cpu"
3856         ;;
3857     esac
3858
3859 elif enabled bfin; then
3860
3861     cpuflags="-mcpu=$cpu"
3862
3863 elif enabled mips; then
3864
3865     cpuflags="-march=$cpu"
3866
3867     case $cpu in
3868         24kc)
3869             disable mips32r5
3870             disable mips64r6
3871             disable mipsfpu
3872             disable mipsdspr1
3873             disable mipsdspr2
3874             disable msa
3875         ;;
3876         24kf*)
3877             disable mips32r5
3878             disable mips64r6
3879             disable mipsdspr1
3880             disable mipsdspr2
3881             disable msa
3882         ;;
3883         24kec|34kc|1004kc)
3884             disable mips32r5
3885             disable mips64r6
3886             disable mipsfpu
3887             disable mipsdspr2
3888             disable msa
3889         ;;
3890         24kef*|34kf*|1004kf*)
3891             disable mips32r5
3892             disable mips64r6
3893             disable mipsdspr2
3894             disable msa
3895         ;;
3896         74kc)
3897             disable mips32r5
3898             disable mips64r6
3899             disable mipsfpu
3900             disable msa
3901         ;;
3902         74kf)
3903             disable mips32r5
3904             disable mips64r6
3905             disable msa
3906         ;;
3907         p5600)
3908             disable mips64r6
3909             disable mipsdspr1
3910             disable mipsdspr2
3911
3912             check_cflags "-mtune=p5600"
3913         ;;
3914         i6400)
3915             disable mips32r5
3916             disable mipsdspr1
3917             disable mipsdspr2
3918             disable mipsfpu
3919
3920             check_cflags "-mtune=i6400 -mabi=64"
3921             check_ldflags "-mabi=64"
3922         ;;
3923         loongson3*)
3924             enable mipsfpu
3925             disable mips32r2
3926             disable mips32r5
3927             disable mips64r6
3928             disable mipsdspr1
3929             disable mipsdspr2
3930             disable msa
3931             enable local_aligned_8 local_aligned_16
3932             enable simd_align_16
3933             enable fast_64bit
3934             enable fast_clz
3935             enable fast_cmov
3936             enable fast_unaligned
3937             disable aligned_stack
3938             cpuflags="-march=$cpu"
3939         ;;
3940         generic)
3941             disable mips32r5
3942             disable mips64r6
3943             disable msa
3944         ;;
3945     esac
3946
3947 elif enabled ppc; then
3948
3949     disable ldbrx
3950     disable vsx
3951
3952     case $(tolower $cpu) in
3953         601|ppc601|powerpc601)
3954             cpuflags="-mcpu=601"
3955             disable altivec
3956         ;;
3957         603*|ppc603*|powerpc603*)
3958             cpuflags="-mcpu=603"
3959             disable altivec
3960         ;;
3961         604*|ppc604*|powerpc604*)
3962             cpuflags="-mcpu=604"
3963             disable altivec
3964         ;;
3965         g3|75*|ppc75*|powerpc75*)
3966             cpuflags="-mcpu=750"
3967             disable altivec
3968         ;;
3969         g4|745*|ppc745*|powerpc745*)
3970             cpuflags="-mcpu=7450"
3971         ;;
3972         74*|ppc74*|powerpc74*)
3973             cpuflags="-mcpu=7400"
3974         ;;
3975         g5|970|ppc970|powerpc970)
3976             cpuflags="-mcpu=970"
3977         ;;
3978         power[3-8]*)
3979             cpuflags="-mcpu=$cpu"
3980         ;;
3981         cell)
3982             cpuflags="-mcpu=cell"
3983             enable ldbrx
3984         ;;
3985         e500mc)
3986             cpuflags="-mcpu=e500mc"
3987             disable altivec
3988         ;;
3989         e500v2)
3990             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3991             disable altivec
3992             disable dcbzl
3993         ;;
3994         e500)
3995             cpuflags="-mcpu=8540 -mhard-float"
3996             disable altivec
3997             disable dcbzl
3998         ;;
3999     esac
4000
4001 elif enabled sparc; then
4002
4003     case $cpu in
4004         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4005             cpuflags="-mcpu=$cpu"
4006         ;;
4007         ultrasparc*|niagara[234])
4008             cpuflags="-mcpu=$cpu"
4009         ;;
4010     esac
4011
4012 elif enabled x86; then
4013
4014     case $cpu in
4015         i[345]86|pentium)
4016             cpuflags="-march=$cpu"
4017             disable i686
4018             disable mmx
4019         ;;
4020         # targets that do NOT support nopl and conditional mov (cmov)
4021         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4022             cpuflags="-march=$cpu"
4023             disable i686
4024         ;;
4025         # targets that do support nopl and conditional mov (cmov)
4026         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4027         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4028             cpuflags="-march=$cpu"
4029             enable i686
4030             enable fast_cmov
4031         ;;
4032         # targets that do support conditional mov but on which it's slow
4033         pentium4|pentium4m|prescott|nocona)
4034             cpuflags="-march=$cpu"
4035             enable i686
4036             disable fast_cmov
4037         ;;
4038     esac
4039
4040 fi
4041
4042 if [ "$cpu" != generic ]; then
4043     add_cflags  $cpuflags
4044     add_asflags $cpuflags
4045 fi
4046
4047 # compiler sanity check
4048 check_exec <<EOF
4049 int main(void){ return 0; }
4050 EOF
4051 if test "$?" != 0; then
4052     echo "$cc is unable to create an executable file."
4053     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4054         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4055         echo "Only do this if you know what cross compiling means."
4056     fi
4057     die "C compiler test failed."
4058 fi
4059
4060 add_cppflags -D_ISOC99_SOURCE
4061 add_cxxflags -D__STDC_CONSTANT_MACROS
4062 check_cflags -std=c99
4063 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4064 #include <stdlib.h>
4065 EOF
4066 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4067 #include <stdlib.h>
4068 EOF
4069
4070 add_host_cppflags -D_ISOC99_SOURCE
4071 check_host_cflags -std=c99
4072 check_host_cflags -Wall
4073 check_host_cflags -O3
4074
4075 check_64bit(){
4076     arch32=$1
4077     arch64=$2
4078     expr=$3
4079     check_code cc "" "int test[2*($expr) - 1]" &&
4080         subarch=$arch64 || subarch=$arch32
4081 }
4082
4083 case "$arch" in
4084     aarch64|alpha|ia64)
4085         spic=$shared
4086     ;;
4087     mips)
4088         check_64bit mips mips64 '_MIPS_SIM > 1'
4089         spic=$shared
4090     ;;
4091     parisc)
4092         check_64bit parisc parisc64 'sizeof(void *) > 4'
4093         spic=$shared
4094     ;;
4095     ppc)
4096         check_64bit ppc ppc64 'sizeof(void *) > 4'
4097         spic=$shared
4098     ;;
4099     s390)
4100         check_64bit s390 s390x 'sizeof(void *) > 4'
4101         spic=$shared
4102     ;;
4103     sparc)
4104         check_64bit sparc sparc64 'sizeof(void *) > 4'
4105         spic=$shared
4106     ;;
4107     x86)
4108         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4109         # Treat x32 as x64 for now. Note it also needs spic=$shared
4110         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4111             subarch=x86_64
4112         if test "$subarch" = "x86_64"; then
4113             spic=$shared
4114         fi
4115     ;;
4116     ppc)
4117         check_cc <<EOF && subarch="ppc64"
4118         int test[(int)sizeof(char*) - 7];
4119 EOF
4120     ;;
4121 esac
4122
4123 enable $subarch
4124 enabled spic && enable_weak pic
4125
4126 # OS specific
4127 case $target_os in
4128     aix)
4129         SHFLAGS=-shared
4130         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4131         enabled shared && add_ldflags -Wl,-brtl
4132         ;;
4133     android)
4134         disable symver
4135         enable section_data_rel_ro
4136         SLIB_INSTALL_NAME='$(SLIBNAME)'
4137         SLIB_INSTALL_LINKS=
4138         # soname not set on purpose
4139         SHFLAGS=-shared
4140         ;;
4141     haiku)
4142         prefix_default="/boot/common"
4143         network_extralibs="-lnetwork"
4144         host_libs=
4145         ;;
4146     sunos)
4147         SHFLAGS='-shared -Wl,-h,$$(@F)'
4148         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4149         network_extralibs="-lsocket -lnsl"
4150         add_cppflags -D__EXTENSIONS__
4151         # When using suncc to build, the Solaris linker will mark
4152         # an executable with each instruction set encountered by
4153         # the Solaris assembler.  As our libraries contain their own
4154         # guards for processor-specific code, instead suppress
4155         # generation of the HWCAPS ELF section on Solaris x86 only.
4156         enabled_all suncc x86 &&
4157             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4158             add_ldflags -Wl,-M,mapfile
4159         nm_default='nm -P -g'
4160         ;;
4161     netbsd)
4162         disable symver
4163         oss_indev_extralibs="-lossaudio"
4164         oss_outdev_extralibs="-lossaudio"
4165         enabled gcc || check_ldflags -Wl,-zmuldefs
4166         ;;
4167     openbsd|bitrig)
4168         disable symver
4169         SHFLAGS='-shared'
4170         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4171         SLIB_INSTALL_LINKS=
4172         oss_indev_extralibs="-lossaudio"
4173         oss_outdev_extralibs="-lossaudio"
4174         ;;
4175     dragonfly)
4176         disable symver
4177         ;;
4178     freebsd)
4179         ;;
4180     bsd/os)
4181         add_extralibs -lpoll -lgnugetopt
4182         strip="strip -d"
4183         ;;
4184     darwin)
4185         enabled ppc && add_asflags -force_cpusubtype_ALL
4186         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4187         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4188         strip="${strip} -x"
4189         add_ldflags -Wl,-dynamic,-search_paths_first
4190         SLIBSUF=".dylib"
4191         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4192         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4193         objformat="macho"
4194         enabled x86_64 && objformat="macho64"
4195         enabled_any pic shared x86_64 ||
4196             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4197         ;;
4198     mingw32*)
4199         if test $target_os = "mingw32ce"; then
4200             disable network
4201         else
4202             target_os=mingw32
4203         fi
4204         LIBTARGET=i386
4205         if enabled x86_64; then
4206             LIBTARGET="i386:x86-64"
4207         elif enabled arm; then
4208             LIBTARGET=arm-wince
4209         fi
4210         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4211         check_ldflags -Wl,--nxcompat
4212         check_ldflags -Wl,--dynamicbase
4213         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4214         shlibdir_default="$bindir_default"
4215         SLIBPREF=""
4216         SLIBSUF=".dll"
4217         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4218         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4219         dlltool="${cross_prefix}dlltool"
4220         if check_cmd lib.exe -list; then
4221             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4222             if enabled x86_64; then
4223                 LIBTARGET=x64
4224             fi
4225         elif check_cmd $dlltool --version; then
4226             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4227         fi
4228         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4229         SLIB_INSTALL_LINKS=
4230         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4231         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4232         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4233         objformat="win32"
4234         ranlib=:
4235         enable dos_paths
4236         ;;
4237     win32|win64)
4238         disable symver
4239         if enabled shared; then
4240             # Link to the import library instead of the normal static library
4241             # for shared libs.
4242             LD_LIB='%.lib'
4243             # Cannot build both shared and static libs with MSVC or icl.
4244             disable static
4245         fi
4246         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4247         shlibdir_default="$bindir_default"
4248         SLIBPREF=""
4249         SLIBSUF=".dll"
4250         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4251         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4252         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4253         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4254         SLIB_INSTALL_LINKS=
4255         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4256         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4257         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4258         objformat="win32"
4259         ranlib=:
4260         enable dos_paths
4261         ;;
4262     cygwin*)
4263         target_os=cygwin
4264         shlibdir_default="$bindir_default"
4265         SLIBPREF="cyg"
4266         SLIBSUF=".dll"
4267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4269         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4270         SLIB_INSTALL_LINKS=
4271         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4272         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4273         objformat="win32"
4274         enable dos_paths
4275         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4276         ;;
4277     *-dos|freedos|opendos)
4278         network_extralibs="-lsocket"
4279         objformat="coff"
4280         enable dos_paths
4281         add_cppflags -U__STRICT_ANSI__
4282         ;;
4283     linux)
4284         enable dv1394
4285         enable section_data_rel_ro
4286         ;;
4287     irix*)
4288         target_os=irix
4289         ranlib="echo ignoring ranlib"
4290         ;;
4291     os/2*)
4292         strip="lxlite -CS"
4293         ln_s="cp -f"
4294         objformat="aout"
4295         add_cppflags -D_GNU_SOURCE
4296         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4297         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4298         LIBSUF="_s.a"
4299         SLIBPREF=""
4300         SLIBSUF=".dll"
4301         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4302         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4303         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4304             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4305             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4306             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4307             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4308             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4309         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4310             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4311         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4312         enable dos_paths
4313         enable_weak os2threads
4314         ;;
4315     gnu/kfreebsd)
4316         add_cppflags -D_BSD_SOURCE
4317         ;;
4318     gnu)
4319         ;;
4320     qnx)
4321         add_cppflags -D_QNX_SOURCE
4322         network_extralibs="-lsocket"
4323         ;;
4324     symbian)
4325         SLIBSUF=".dll"
4326         enable dos_paths
4327         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4328         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4329         add_ldflags -Wl,--target1-abs,--no-undefined \
4330                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4331                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4332         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4333                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4334                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4335         ;;
4336     osf1)
4337         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4338         ;;
4339     minix)
4340         ;;
4341     plan9)
4342         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4343                      -D_REENTRANT_SOURCE        \
4344                      -D_RESEARCH_SOURCE         \
4345                      -DFD_SETSIZE=96            \
4346                      -DHAVE_SOCK_OPTS
4347         add_compat strtod.o strtod=avpriv_strtod
4348         network_extralibs='-lbsd'
4349         exeobjs=compat/plan9/main.o
4350         disable ffserver
4351         cp_f='cp'
4352         ;;
4353     none)
4354         ;;
4355     *)
4356         die "Unknown OS '$target_os'."
4357         ;;
4358 esac
4359
4360 # determine libc flavour
4361
4362 probe_libc(){
4363     pfx=$1
4364     pfx_no_=${pfx%_}
4365     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4366     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4367         eval ${pfx}libc_type=uclibc
4368         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4369     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4370         eval ${pfx}libc_type=glibc
4371         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4372     # MinGW headers can be installed on Cygwin, so check for newlib first.
4373     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4374         eval ${pfx}libc_type=newlib
4375         add_${pfx}cppflags -U__STRICT_ANSI__
4376     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4377     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4378         eval ${pfx}libc_type=mingw64
4379         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4380             add_compat msvcrt/snprintf.o
4381             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4382         fi
4383         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4384         eval test \$${pfx_no_}cc_type = "gcc" &&
4385             add_${pfx}cppflags -D__printf__=__gnu_printf__
4386     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4387          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4388         eval ${pfx}libc_type=mingw32
4389         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4390             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4391             die "ERROR: MinGW32 runtime version must be >= 3.15."
4392         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4393         eval test \$${pfx_no_}cc_type = "gcc" &&
4394             add_${pfx}cppflags -D__printf__=__gnu_printf__
4395     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4396         eval ${pfx}libc_type=msvcrt
4397         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4398         # 0x601 by default unless something else is set by the user.
4399         # This can easily lead to us detecting functions only present
4400         # in such new versions and producing binaries requiring windows 7.0.
4401         # Therefore explicitly set the default to XP unless the user has
4402         # set something else on the command line.
4403         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4404             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4405     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4406         eval ${pfx}libc_type=klibc
4407     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4408         eval ${pfx}libc_type=bionic
4409     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4410         eval ${pfx}libc_type=solaris
4411         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4412     fi
4413     check_${pfx}cc <<EOF
4414 #include <time.h>
4415 void *v = localtime_r;
4416 EOF
4417 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4418 #include <time.h>
4419 void *v = localtime_r;
4420 EOF
4421
4422 }
4423
4424 probe_libc
4425 test -n "$libc_type" && enable libc_$libc_type
4426 probe_libc host_
4427 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4428
4429 case $libc_type in
4430     bionic)
4431         add_compat strtod.o strtod=avpriv_strtod
4432         ;;
4433     msvcrt)
4434         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4435             add_compat strtod.o strtod=avpriv_strtod
4436             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4437                                          _snprintf=avpriv_snprintf  \
4438                                          vsnprintf=avpriv_vsnprintf
4439         fi
4440         ;;
4441 esac
4442
4443 # hacks for compiler/libc/os combinations
4444
4445 if enabled_all tms470 libc_glibc; then
4446     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4447     add_cppflags -D__USER_LABEL_PREFIX__=
4448     add_cppflags -D__builtin_memset=memset
4449     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4450     add_cflags   -pds=48    # incompatible redefinition of macro
4451 fi
4452
4453 if enabled_all ccc libc_glibc; then
4454     add_ldflags -Wl,-z,now  # calls to libots crash without this
4455 fi
4456
4457 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4458     add_cppflags '-I\$(SRC_PATH)/compat/float'
4459
4460 esc(){
4461     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4462 }
4463
4464 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4465
4466 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4467
4468 set_default libdir
4469 : ${shlibdir_default:="$libdir"}
4470
4471 set_default $PATHS_LIST
4472 set_default nm
4473
4474 # we need to build at least one lib type
4475 if ! enabled_any static shared; then
4476     cat <<EOF
4477 At least one library type must be built.
4478 Specify --enable-static to build the static libraries or --enable-shared to
4479 build the shared libraries as well. To only build the shared libraries specify
4480 --disable-static in addition to --enable-shared.
4481 EOF
4482     exit 1;
4483 fi
4484
4485 die_license_disabled() {
4486     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4487 }
4488
4489 die_license_disabled_gpl() {
4490     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4491 }
4492
4493 die_license_disabled gpl frei0r
4494 die_license_disabled gpl libcdio
4495 die_license_disabled gpl libsmbclient
4496 die_license_disabled gpl libutvideo
4497 die_license_disabled gpl libvidstab
4498 die_license_disabled gpl libx264
4499 die_license_disabled gpl libx265
4500 die_license_disabled gpl libxavs
4501 die_license_disabled gpl libxvid
4502 die_license_disabled gpl libzvbi
4503 die_license_disabled gpl x11grab
4504
4505 die_license_disabled nonfree libaacplus
4506 die_license_disabled nonfree libfaac
4507 die_license_disabled nonfree nvenc
4508 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4509 enabled gpl && die_license_disabled_gpl nonfree openssl
4510
4511 die_license_disabled version3 libopencore_amrnb
4512 die_license_disabled version3 libopencore_amrwb
4513 die_license_disabled version3 libsmbclient
4514 die_license_disabled version3 libvo_aacenc
4515 die_license_disabled version3 libvo_amrwbenc
4516
4517 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4518
4519 disabled optimizations || check_cflags -fomit-frame-pointer
4520
4521 enable_weak_pic() {
4522     disabled pic && return
4523     enable pic
4524     add_cppflags -DPIC
4525     case "$target_os" in
4526     mingw*|cygwin*)
4527         ;;
4528     *)
4529         add_cflags -fPIC
4530         ;;
4531     esac
4532     add_asflags  -fPIC
4533 }
4534
4535 enabled pic && enable_weak_pic
4536
4537 check_cc <<EOF || die "Symbol mangling check failed."
4538 int ff_extern;
4539 EOF
4540 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4541 extern_prefix=${sym%%ff_extern*}
4542
4543 check_cc <<EOF && enable_weak inline_asm
4544 void foo(void) { __asm__ volatile ("" ::); }
4545 EOF
4546
4547 _restrict=
4548 for restrict_keyword in restrict __restrict__ __restrict; do
4549     check_cc <<EOF && _restrict=$restrict_keyword && break
4550 void foo(char * $restrict_keyword p);
4551 EOF
4552 done
4553
4554 check_cc <<EOF && enable pragma_deprecated
4555 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4556 EOF
4557
4558 check_cc <<EOF && enable attribute_packed
4559 struct { int x; } __attribute__((packed)) x;
4560 EOF
4561
4562 check_cc <<EOF && enable attribute_may_alias
4563 union { int x; } __attribute__((may_alias)) x;
4564 EOF
4565
4566 check_cc <<EOF || die "endian test failed"
4567 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4568 EOF
4569 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4570
4571 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4572     if ! enabled bigendian && enabled altivec ;then
4573         enable vsx
4574     fi
4575 fi
4576
4577 check_gas() {
4578     log "check_gas using '$as' as AS"
4579     # :vararg is used on aarch64, arm and ppc altivec
4580     check_as <<EOF || return 1
4581 .macro m n, y:vararg=0
4582 \n: .int \y
4583 .endm
4584 m x
4585 EOF
4586     # .altmacro is only used in arm asm
4587     ! enabled arm || check_as <<EOF || return 1
4588 .altmacro
4589 EOF
4590     enable gnu_as
4591     return 0
4592 }
4593
4594 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4595     nogas=:
4596     enabled_any arm aarch64 && nogas=die
4597     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4598     as_noop=-v
4599
4600     case $as_type in
4601         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4602         gcc)  gaspp_as_type=gas ;;
4603         *)    gaspp_as_type=$as_type ;;
4604     esac
4605
4606     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4607
4608     test "${as#*gas-preprocessor.pl}" != "$as" ||
4609     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4610         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4611
4612     if ! check_gas ; then
4613         as=${gas:=$as}
4614         check_gas || \
4615             $nogas "GNU assembler not found, install/update gas-preprocessor"
4616     fi
4617
4618     check_as <<EOF && enable as_func
4619 .func test
4620 .endfunc
4621 EOF
4622 fi
4623
4624 check_inline_asm inline_asm_labels '"1:\n"'
4625
4626 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4627
4628 if enabled aarch64; then
4629     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4630     # internal assembler in clang 3.3 does not support this instruction
4631     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4632     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4633
4634     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4635
4636 elif enabled alpha; then
4637
4638     check_cflags -mieee
4639
4640 elif enabled arm; then
4641
4642     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4643 float func(float a, float b){ return a+b; }
4644 EOF
4645
4646     enabled thumb && check_cflags -mthumb || check_cflags -marm
4647
4648     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4649         enable vfp_args
4650     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4651         case "${cross_prefix:-$cc}" in
4652             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4653             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4654 __asm__ (".eabi_attribute 28, 1");
4655 int main(void) { return 0; }
4656 EOF
4657         esac
4658         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4659     fi
4660
4661     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4662     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4663     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4664     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4665     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4666     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4667     enabled setend  && check_insn setend  'setend be'
4668
4669     [ $target_os = linux ] || [ $target_os = android ] ||
4670         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4671             $ARCH_EXT_LIST_ARM
4672
4673     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4674
4675     check_as <<EOF && enable as_dn_directive
4676 ra .dn d0.i16
4677 .unreq ra
4678 EOF
4679
4680     # llvm's integrated assembler supports .object_arch from llvm 3.5
4681     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4682 .object_arch armv4
4683 EOF
4684
4685     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4686
4687 elif enabled mips; then
4688
4689     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4690
4691     # Enable minimum ISA based on selected options
4692     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4693         add_cflags "-mips64r2"
4694         add_asflags "-mips64r2"
4695     elif enabled mips64 && enabled mipsfpu; then
4696         add_cflags "-mips64"
4697         add_asflags "-mips64"
4698     elif enabled mipsdspr1 || enabled mipsdspr2; then
4699         add_cflags "-mips32r2 -mfp32"
4700         add_asflags "-mips32r2 -mfp32"
4701     elif enabled mips32r5 || enabled mips64r6; then
4702         check_cflags "-mfp64"
4703         check_ldflags "-mfp64"
4704     fi
4705
4706     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4707      check_ldflags "-mips32r5" &&
4708      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4709     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4710      check_ldflags "-mips64r6" &&
4711      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4712     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4713      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4714     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4715      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4716     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4717      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4718     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4719      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4720     enabled loongson3 && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4721         check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4722
4723     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4724     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4725     enabled msa && add_asflags "-mmsa"
4726
4727 elif enabled parisc; then
4728
4729     if enabled gcc; then
4730         case $($cc -dumpversion) in
4731             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4732         esac
4733     fi
4734
4735 elif enabled ppc; then
4736
4737     enable local_aligned_8 local_aligned_16 local_aligned_32
4738
4739     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4740     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4741     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4742     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4743
4744     # AltiVec flags: The FSF version of GCC differs from the Apple version
4745     if enabled altivec; then
4746         check_cflags -maltivec -mabi=altivec &&
4747         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4748         check_cflags -faltivec
4749
4750         # check if our compiler supports Motorola AltiVec C API
4751         check_cc <<EOF || disable altivec
4752 $inc_altivec_h
4753 int main(void) {
4754     vector signed int v1 = (vector signed int) { 0 };
4755     vector signed int v2 = (vector signed int) { 1 };
4756     v1 = vec_add(v1, v2);
4757     return 0;
4758 }
4759 EOF
4760
4761         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4762     fi
4763
4764     if enabled vsx; then
4765         check_cflags -mvsx
4766     fi
4767 elif enabled x86; then
4768
4769     check_builtin rdtsc    intrin.h   "__rdtsc()"
4770     check_builtin mm_empty mmintrin.h "_mm_empty()"
4771
4772     enable local_aligned_8 local_aligned_16 local_aligned_32
4773
4774     # check whether EBP is available on x86
4775     # As 'i' is stored on the stack, this program will crash
4776     # if the base pointer is used to access it because the
4777     # base pointer is cleared in the inline assembly code.
4778     check_exec_crash <<EOF && enable ebp_available
4779 volatile int i=0;
4780 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4781 return i;
4782 EOF
4783
4784     # check whether EBX is available on x86
4785     check_inline_asm ebx_available '""::"b"(0)' &&
4786         check_inline_asm ebx_available '"":::"%ebx"'
4787
4788     # check whether xmm clobbers are supported
4789     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4790
4791     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4792         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4793
4794     # check whether binutils is new enough to compile SSSE3/MMXEXT
4795     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4796     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4797
4798     if ! disabled_any asm mmx yasm; then
4799         if check_cmd $yasmexe --version; then
4800             enabled x86_64 && yasm_extra="-m amd64"
4801             yasm_debug="-g dwarf2"
4802         elif check_cmd nasm -v; then
4803             yasmexe=nasm
4804             yasm_debug="-g -F dwarf"
4805             if enabled x86_64; then
4806                 case "$objformat" in
4807                     elf)   objformat=elf64 ;;
4808                     win32) objformat=win64 ;;
4809                 esac
4810             fi
4811         fi
4812
4813         YASMFLAGS="-f $objformat $yasm_extra"
4814         enabled pic               && append YASMFLAGS "-DPIC"
4815         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4816         case "$objformat" in
4817             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4818         esac
4819
4820         check_yasm "movbe ecx, [5]" && enable yasm ||
4821             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4822         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4823         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4824         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4825         check_yasm "CPU amdnop" || disable cpunop
4826     fi
4827
4828     case "$cpu" in
4829         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4830             disable fast_clz
4831         ;;
4832     esac
4833
4834 fi
4835
4836 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4837
4838 check_ldflags -Wl,--as-needed
4839 check_ldflags -Wl,-z,noexecstack
4840
4841 if check_func dlopen; then
4842     ldl=
4843 elif check_func dlopen -ldl; then
4844     ldl=-ldl
4845 fi
4846
4847 frei0r_filter_extralibs='$ldl'
4848 frei0r_src_filter_extralibs='$ldl'
4849 ladspa_filter_extralibs='$ldl'
4850 nvenc_encoder_extralibs='$ldl'
4851
4852 if ! disabled network; then
4853     check_func getaddrinfo $network_extralibs
4854     check_func getservbyport $network_extralibs
4855     check_func inet_aton $network_extralibs
4856
4857     check_type netdb.h "struct addrinfo"
4858     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4859     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4860     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4861     check_type poll.h "struct pollfd"
4862     check_type netinet/sctp.h "struct sctp_event_subscribe"
4863     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4864     check_type netinet/in.h "struct sockaddr_in6"
4865     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4866     check_type "sys/types.h sys/socket.h" socklen_t
4867
4868     # Prefer arpa/inet.h over winsock2
4869     if check_header arpa/inet.h ; then
4870         check_func closesocket
4871     elif check_header winsock2.h ; then
4872         check_func_headers winsock2.h closesocket -lws2 &&
4873             network_extralibs="-lws2" ||
4874         { check_func_headers winsock2.h closesocket -lws2_32 &&
4875             network_extralibs="-lws2_32"; } || disable winsock2_h network
4876         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4877
4878         check_type ws2tcpip.h socklen_t
4879         check_type ws2tcpip.h "struct addrinfo"
4880         check_type ws2tcpip.h "struct group_source_req"
4881         check_type ws2tcpip.h "struct ip_mreq_source"
4882         check_type ws2tcpip.h "struct ipv6_mreq"
4883         check_type winsock2.h "struct pollfd"
4884         check_struct winsock2.h "struct sockaddr" sa_len
4885         check_type ws2tcpip.h "struct sockaddr_in6"
4886         check_type ws2tcpip.h "struct sockaddr_storage"
4887     else
4888         disable network
4889     fi
4890 fi
4891
4892 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4893 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4894 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4895 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4896 check_builtin sarestart signal.h "SA_RESTART"
4897 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4898
4899 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4900 check_func  ${malloc_prefix}memalign            && enable memalign
4901 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4902
4903 check_func  access
4904 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4905 check_func  fcntl
4906 check_func  fork
4907 check_func  gethrtime
4908 check_func  getopt
4909 check_func  getrusage
4910 check_func  gettimeofday
4911 check_func  gmtime_r
4912 check_func  isatty
4913 check_func  localtime_r
4914 check_func  mach_absolute_time
4915 check_func  mkstemp
4916 check_func  mmap
4917 check_func  mprotect
4918 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4919 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4920 check_func  sched_getaffinity
4921 check_func  setrlimit
4922 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4923 check_func  strerror_r
4924 check_func  sysconf
4925 check_func  sysctl
4926 check_func  usleep
4927
4928 check_func_headers conio.h kbhit
4929 check_func_headers io.h setmode
4930 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4931 check_func_headers stdlib.h getenv
4932
4933 check_func_headers windows.h CoTaskMemFree -lole32
4934 check_func_headers windows.h GetProcessAffinityMask
4935 check_func_headers windows.h GetProcessTimes
4936 check_func_headers windows.h GetSystemTimeAsFileTime
4937 check_func_headers windows.h MapViewOfFile
4938 check_func_headers windows.h PeekNamedPipe
4939 check_func_headers windows.h SetConsoleTextAttribute
4940 check_func_headers windows.h Sleep
4941 check_func_headers windows.h VirtualAlloc
4942 check_struct windows.h "CONDITION_VARIABLE" Ptr
4943 check_func_headers glob.h glob
4944 enabled xlib &&
4945     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4946
4947 check_header direct.h
4948 check_header dlfcn.h
4949 check_header dxva.h
4950 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4951 check_header io.h
4952 check_header libcrystalhd/libcrystalhd_if.h
4953 check_header mach/mach_time.h
4954 check_header malloc.h
4955 check_header net/udplite.h
4956 check_header poll.h
4957 check_header sys/mman.h
4958 check_header sys/param.h
4959 check_header sys/resource.h
4960 check_header sys/select.h
4961 check_header sys/time.h
4962 check_header sys/un.h
4963 check_header termios.h
4964 check_header unistd.h
4965 check_header valgrind/valgrind.h
4966 check_header vdpau/vdpau.h
4967 check_header vdpau/vdpau_x11.h
4968 check_header VideoDecodeAcceleration/VDADecoder.h
4969 check_header windows.h
4970 check_header X11/extensions/XvMClib.h
4971 check_header asm/types.h
4972
4973 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4974 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4975 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4976
4977 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4978
4979 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4980
4981 if ! disabled w32threads && ! enabled pthreads; then
4982     check_func_headers "windows.h process.h" _beginthreadex &&
4983         enable w32threads || disable w32threads
4984 fi
4985
4986 # check for some common methods of building with pthread support
4987 # do this before the optional library checks as some of them require pthreads
4988 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4989     enable pthreads
4990     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4991         add_cflags -pthread
4992         add_extralibs -pthread
4993     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4994         add_cflags -pthreads
4995         add_extralibs -pthreads
4996     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4997         add_cflags -ldl -pthread
4998         add_extralibs -ldl -pthread
4999     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5000         add_extralibs -lpthreadGC2
5001     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5002         :
5003     elif ! check_func pthread_join && ! check_func pthread_create; then
5004         disable pthreads
5005     fi
5006     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5007 fi
5008
5009
5010 if enabled pthreads; then
5011   check_func pthread_cancel
5012 fi
5013
5014 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5015 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5016 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5017
5018 check_lib math.h sin -lm && LIBM="-lm"
5019 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5020
5021 atan2f_args=2
5022 ldexpf_args=2
5023 powf_args=2
5024
5025 for func in $MATH_FUNCS; do
5026     eval check_mathfunc $func \${${func}_args:-1}
5027 done
5028
5029 # these are off by default, so fail if requested and not available
5030 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5031 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5032                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5033 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5034                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5035                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5036 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5037 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5038 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5039 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5040 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5041 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5042 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5043 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5044 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5045 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5046                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5047                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5048 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5049 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5050 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5051 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5052 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"
5053 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5054 enabled fontconfig        && enable libfontconfig
5055 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5056 enabled libfreetype       && require_libfreetype
5057 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5058 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5059 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5060                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5061                                done || die "ERROR: libgsm not found"; }
5062 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5063 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5064 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5065 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5066 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5067 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5068 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5069 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5070 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5071 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5072                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5073                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5074                                die "ERROR: libopenjpeg not found"; }
5075 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5076 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5077 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5078 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5079 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5080 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5081 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5082                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5083 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5084 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5085 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5086 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5087     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5088     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5089 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5090 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5091                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5092                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5093 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5094 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5095 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5096 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5097 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5098 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5099 enabled libvpx            && {
5100     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5101                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5102     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 ||
5103                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5104     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5105     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx || disable libvpx_vp9_encoder; } }
5106 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5107 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5108 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5109                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5110                                  warn "using libx264 without pkg-config"; } } &&
5111                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5112                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5113 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5114                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
5115                                die "ERROR: libx265 version must be >= 17."; }
5116 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5117 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5118 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5119 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5120 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5121                                 { ! enabled cross_compile && {
5122                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5123                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5124                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5125                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5126                                die "ERROR: mmal not found"; }
5127 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5128                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5129                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5130                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5131 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5132                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5133                                die "ERROR: openal not found"; } &&
5134                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5135                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5136 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5137                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5138                                die "ERROR: opencl not found"; } &&
5139                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5140                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5141                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5142 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5143                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5144                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5145                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5146                                die "ERROR: opengl not found."
5147                              }
5148 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5149                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5150                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5151                                die "ERROR: openssl not found"; }
5152 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5153
5154 if enabled gnutls; then
5155     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5156     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5157 fi
5158
5159 # libdc1394 check
5160 if enabled libdc1394; then
5161     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5162         enable libdc1394_2; } ||
5163     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5164         enable libdc1394_1; } ||
5165     die "ERROR: No version of libdc1394 found "
5166 fi
5167 if ! disabled sdl; then
5168     SDL_CONFIG="${cross_prefix}sdl-config"
5169     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5170         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5171         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5172         enable sdl
5173     else
5174         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5175             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5176             sdl_libs=$("${SDL_CONFIG}" --libs)
5177             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5178             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5179             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5180             enable sdl
5181         elif enabled sdl ; then
5182             die "ERROR: SDL not found"
5183         else
5184             disable sdl
5185         fi
5186     fi
5187 fi
5188 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5189
5190 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5191 enabled makeinfo && (makeinfo --version | \
5192                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5193     && enable makeinfo_html || disable makeinfo_html
5194 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5195 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5196 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5197 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5198
5199 check_header linux/fb.h
5200 check_header linux/videodev.h
5201 check_header linux/videodev2.h
5202 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5203
5204 check_header sys/videoio.h
5205 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5206
5207 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5208 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5209 # w32api 3.12 had it defined wrong
5210 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5211
5212 check_type "dshow.h" IBaseFilter
5213
5214 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5215 { check_header dev/bktr/ioctl_meteor.h &&
5216   check_header dev/bktr/ioctl_bt848.h; } ||
5217 { check_header machine/ioctl_meteor.h &&
5218   check_header machine/ioctl_bt848.h; } ||
5219 { check_header dev/video/meteor/ioctl_meteor.h &&
5220   check_header dev/video/bktr/ioctl_bt848.h; } ||
5221 check_header dev/ic/bt8xx.h
5222
5223 check_header sndio.h
5224 if check_struct sys/soundcard.h audio_buf_info bytes; then
5225     enable_safe sys/soundcard.h
5226 else
5227     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5228     #include <sys/soundcard.h>
5229     audio_buf_info abc;
5230 EOF
5231 fi
5232 check_header soundcard.h
5233
5234 enabled_any alsa_indev alsa_outdev &&
5235     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5236
5237 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5238     check_func jack_port_get_latency_range -ljack
5239
5240 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5241
5242 if enabled libcdio; then
5243     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5244     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5245     die "ERROR: No usable libcdio/cdparanoia found"
5246 fi
5247
5248 enabled xlib &&
5249     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5250
5251 if ! disabled libxcb; then
5252     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5253         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5254     } && disable x11grab && enable libxcb
5255
5256 if enabled libxcb; then
5257     disabled libxcb_shm || {
5258         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5259             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5260         } && check_header sys/shm.h && enable libxcb_shm; }
5261
5262     disabled libxcb_xfixes || {
5263         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5264             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5265         } && enable libxcb_xfixes; }
5266
5267     disabled libxcb_shape || {
5268         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5269             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5270         } && enable libxcb_shape; }
5271
5272     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5273     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5274 fi
5275 fi
5276
5277 if enabled x11grab; then
5278     enabled xlib || die "ERROR: Xlib not found"
5279     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5280     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5281 fi
5282
5283 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5284
5285 enabled dxva2api_h &&
5286     check_cc <<EOF && enable dxva2api_cobj
5287 #define _WIN32_WINNT 0x0600
5288 #define COBJMACROS
5289 #include <windows.h>
5290 #include <d3d9.h>
5291 #include <dxva2api.h>
5292 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5293 EOF
5294
5295 enabled vaapi &&
5296     check_lib va/va.h vaInitialize -lva ||
5297     disable vaapi
5298
5299 enabled vaapi && enabled xlib &&
5300     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5301     enable vaapi_x11
5302
5303 enabled vdpau &&
5304     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5305     disable vdpau
5306
5307 enabled vdpau && enabled xlib &&
5308     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5309     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5310     enable vdpau_x11
5311
5312 # Funny iconv installations are not unusual, so check it after all flags have been set
5313 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5314
5315 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5316
5317 # add some useful compiler flags if supported
5318 check_cflags -Wdeclaration-after-statement
5319 check_cflags -Wall
5320 check_cflags -Wdisabled-optimization
5321 check_cflags -Wpointer-arith
5322 check_cflags -Wredundant-decls
5323 check_cflags -Wwrite-strings
5324 check_cflags -Wtype-limits
5325 check_cflags -Wundef
5326 check_cflags -Wmissing-prototypes
5327 check_cflags -Wno-pointer-to-int-cast
5328 check_cflags -Wstrict-prototypes
5329 check_cflags -Wempty-body
5330 enabled extra_warnings && check_cflags -Winline
5331
5332 check_disable_warning(){
5333     warning_flag=-W${1#-Wno-}
5334     test_cflags $warning_flag && add_cflags $1
5335 }
5336
5337 check_disable_warning -Wno-parentheses
5338 check_disable_warning -Wno-switch
5339 check_disable_warning -Wno-format-zero-length
5340 check_disable_warning -Wno-pointer-sign
5341
5342 # add some linker flags
5343 check_ldflags -Wl,--warn-common
5344 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5345 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5346 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5347
5348 # add some strip flags
5349 # -wN '..@*' is more selective than -x, but not available everywhere.
5350 check_stripflags -wN \'..@*\' || check_stripflags -x
5351
5352 enabled neon_clobber_test &&
5353     check_ldflags -Wl,--wrap,avcodec_open2              \
5354                   -Wl,--wrap,avcodec_decode_audio4      \
5355                   -Wl,--wrap,avcodec_decode_video2      \
5356                   -Wl,--wrap,avcodec_decode_subtitle2   \
5357                   -Wl,--wrap,avcodec_encode_audio2      \
5358                   -Wl,--wrap,avcodec_encode_video2      \
5359                   -Wl,--wrap,avcodec_encode_subtitle    \
5360                   -Wl,--wrap,swr_convert                \
5361                   -Wl,--wrap,avresample_convert ||
5362     disable neon_clobber_test
5363
5364 enabled xmm_clobber_test &&
5365     check_ldflags -Wl,--wrap,avcodec_open2              \
5366                   -Wl,--wrap,avcodec_decode_audio4      \
5367                   -Wl,--wrap,avcodec_decode_video2      \
5368                   -Wl,--wrap,avcodec_decode_subtitle2   \
5369                   -Wl,--wrap,avcodec_encode_audio2      \
5370                   -Wl,--wrap,avcodec_encode_video       \
5371                   -Wl,--wrap,avcodec_encode_video2      \
5372                   -Wl,--wrap,avcodec_encode_subtitle    \
5373                   -Wl,--wrap,swr_convert                \
5374                   -Wl,--wrap,avresample_convert         \
5375                   -Wl,--wrap,sws_scale ||
5376     disable xmm_clobber_test
5377
5378 echo "X{};" > $TMPV
5379 if test_ldflags -Wl,--version-script,$TMPV; then
5380     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5381     check_cc <<EOF && enable symver_asm_label
5382 void ff_foo(void) __asm__ ("av_foo@VERSION");
5383 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5384 EOF
5385     check_cc <<EOF && enable symver_gnu_asm
5386 __asm__(".symver ff_foo,av_foo@VERSION");
5387 void ff_foo(void) {}
5388 EOF
5389 fi
5390
5391 if [ -z "$optflags" ]; then
5392     if enabled small; then
5393         optflags=$cflags_size
5394     elif enabled optimizations; then
5395         optflags=$cflags_speed
5396     else
5397         optflags=$cflags_noopt
5398     fi
5399 fi
5400
5401 check_optflags(){
5402     check_cflags "$@"
5403     enabled lto && check_ldflags "$@"
5404 }
5405
5406
5407 if enabled lto; then
5408     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5409     check_cflags  -flto
5410     check_ldflags -flto $cpuflags
5411     disable inline_asm_direct_symbol_refs
5412 fi
5413
5414 check_optflags $optflags
5415 check_optflags -fno-math-errno
5416 check_optflags -fno-signed-zeros
5417
5418 enabled ftrapv && check_cflags -ftrapv
5419
5420 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5421 int x;
5422 EOF
5423
5424
5425 if enabled icc; then
5426     # Just warnings, no remarks
5427     check_cflags -w1
5428     # -wd: Disable following warnings
5429     # 144, 167, 556: -Wno-pointer-sign
5430     # 188: enumerated type mixed with another type
5431     # 1292: attribute "foo" ignored
5432     # 1419: external declaration in primary source file
5433     # 10006: ignoring unknown option -fno-signed-zeros
5434     # 10148: ignoring unknown option -Wno-parentheses
5435     # 10156: ignoring option '-W'; no argument required
5436     # 13200: No EMMS instruction before call to function
5437     # 13203: No EMMS instruction before return from function
5438     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5439     # 11030: Warning unknown option --as-needed
5440     # 10156: ignoring option '-export'; no argument required
5441     check_ldflags -wd10156,11030
5442     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5443     enable ebp_available
5444     # The test above does not test linking
5445     enabled lto && disable symver_asm_label
5446     if enabled x86_32; then
5447         icc_version=$($cc -dumpversion)
5448         test ${icc_version%%.*} -ge 11 &&
5449             check_cflags -falign-stack=maintain-16-byte ||
5450             disable aligned_stack
5451     fi
5452 elif enabled ccc; then
5453     # disable some annoying warnings
5454     add_cflags -msg_disable bitnotint
5455     add_cflags -msg_disable mixfuncvoid
5456     add_cflags -msg_disable nonstandcast
5457     add_cflags -msg_disable unsupieee
5458 elif enabled gcc; then
5459     check_optflags -fno-tree-vectorize
5460     check_cflags -Werror=format-security
5461     check_cflags -Werror=implicit-function-declaration
5462     check_cflags -Werror=missing-prototypes
5463     check_cflags -Werror=return-type
5464     check_cflags -Werror=vla
5465     check_cflags -Wformat
5466     check_cflags -fdiagnostics-color=auto
5467     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5468 elif enabled llvm_gcc; then
5469     check_cflags -mllvm -stack-alignment=16
5470 elif enabled clang; then
5471     check_cflags -mllvm -stack-alignment=16
5472     check_cflags -Qunused-arguments
5473     check_cflags -Werror=implicit-function-declaration
5474     check_cflags -Werror=missing-prototypes
5475     check_cflags -Werror=return-type
5476 elif enabled cparser; then
5477     add_cflags -Wno-missing-variable-declarations
5478     add_cflags -Wno-empty-statement
5479 elif enabled armcc; then
5480     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5481     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5482     # 2523: use of inline assembly is deprecated
5483     add_cflags -W${armcc_opt},--diag_suppress=2523
5484     add_cflags -W${armcc_opt},--diag_suppress=1207
5485     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5486     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5487     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5488     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5489 elif enabled tms470; then
5490     add_cflags -pds=824 -pds=837
5491     disable inline_asm
5492 elif enabled pathscale; then
5493     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5494 elif enabled_any msvc icl; then
5495     enabled x86_32 && disable aligned_stack
5496     enabled_all x86_32 debug && add_cflags -Oy-
5497     enabled debug && add_ldflags -debug
5498     enable pragma_deprecated
5499     if enabled icl; then
5500         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5501         # (correctly) on icl 13.x.
5502         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5503             add_cflags -Qansi-alias
5504         # Some inline asm is not compilable in debug
5505         if enabled debug; then
5506             disable ebp_available
5507             disable ebx_available
5508         fi
5509     fi
5510     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5511     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5512 fi
5513
5514 case $as_type in
5515     clang)
5516         add_asflags -Qunused-arguments
5517     ;;
5518 esac
5519
5520 case $ld_type in
5521     clang)
5522         check_ldflags -Qunused-arguments
5523     ;;
5524 esac
5525
5526 case $target_os in
5527     osf1)
5528         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5529     ;;
5530     plan9)
5531         add_cppflags -Dmain=plan9_main
5532     ;;
5533 esac
5534
5535 enable frame_thread_encoder
5536
5537 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5538
5539 check_deps $CONFIG_LIST       \
5540            $CONFIG_EXTRA      \
5541            $HAVE_LIST         \
5542            $ALL_COMPONENTS    \
5543
5544 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"
5545
5546
5547 if test $target_os = "haiku"; then
5548     disable memalign
5549     disable posix_memalign
5550 fi
5551
5552 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5553     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5554     enable dxva2_lib
5555
5556 ! enabled_any memalign posix_memalign aligned_malloc &&
5557     enabled simd_align_16 && enable memalign_hack
5558
5559 # add_dep lib dep
5560 # -> enable ${lib}_deps_${dep}
5561 # -> add $dep to ${lib}_deps only once
5562 add_dep() {
5563     lib=$1
5564     dep=$2
5565     enabled "${lib}_deps_${dep}" && return 0
5566     enable  "${lib}_deps_${dep}"
5567     prepend "${lib}_deps" $dep
5568 }
5569
5570 # merge deps lib components
5571 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5572 merge_deps() {
5573     lib=$1
5574     shift
5575     for comp in $*; do
5576         enabled $comp || continue
5577         eval "dep=\"\$${comp}_deps\""
5578         for d in $dep; do
5579             add_dep $lib $d
5580         done
5581     done
5582 }
5583
5584 merge_deps libavfilter $FILTER_LIST
5585
5586 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5587
5588 for thread in $THREADS_LIST; do
5589     if enabled $thread; then
5590         test -n "$thread_type" &&
5591             die "ERROR: Only one thread type must be selected." ||
5592             thread_type="$thread"
5593     fi
5594 done
5595
5596 enabled zlib && add_cppflags -DZLIB_CONST
5597
5598 # conditional library dependencies, in linking order
5599 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5600 enabled aresample_filter    && prepend avfilter_deps "swresample"
5601 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5602 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5603 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5604 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5605 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5606 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5607 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5608 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5609 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5610 enabled pan_filter          && prepend avfilter_deps "swresample"
5611 enabled pp_filter           && prepend avfilter_deps "postproc"
5612 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5613 enabled resample_filter && prepend avfilter_deps "avresample"
5614 enabled sab_filter          && prepend avfilter_deps "swscale"
5615 enabled scale_filter    && prepend avfilter_deps "swscale"
5616 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5617 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5618 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5619 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5620
5621 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5622
5623 enabled opus_decoder    && prepend avcodec_deps "swresample"
5624
5625 expand_deps(){
5626     lib_deps=${1}_deps
5627     eval "deps=\$$lib_deps"
5628     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5629     unique $lib_deps
5630 }
5631
5632 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5633 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5634
5635 map 'expand_deps $v' $LIBRARY_LIST
5636
5637 echo "install prefix            $prefix"
5638 echo "source path               $source_path"
5639 echo "C compiler                $cc"
5640 echo "C library                 $libc_type"
5641 if test "$host_cc" != "$cc"; then
5642     echo "host C compiler           $host_cc"
5643     echo "host C library            $host_libc_type"
5644 fi
5645 echo "ARCH                      $arch ($cpu)"
5646 if test "$build_suffix" != ""; then
5647     echo "build suffix              $build_suffix"
5648 fi
5649 if test "$progs_suffix" != ""; then
5650     echo "progs suffix              $progs_suffix"
5651 fi
5652 if test "$extra_version" != ""; then
5653     echo "version string suffix     $extra_version"
5654 fi
5655 echo "big-endian                ${bigendian-no}"
5656 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5657 if enabled x86; then
5658     echo "${yasmexe}                      ${yasm-no}"
5659     echo "MMX enabled               ${mmx-no}"
5660     echo "MMXEXT enabled            ${mmxext-no}"
5661     echo "3DNow! enabled            ${amd3dnow-no}"
5662     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5663     echo "SSE enabled               ${sse-no}"
5664     echo "SSSE3 enabled             ${ssse3-no}"
5665     echo "AVX enabled               ${avx-no}"
5666     echo "XOP enabled               ${xop-no}"
5667     echo "FMA3 enabled              ${fma3-no}"
5668     echo "FMA4 enabled              ${fma4-no}"
5669     echo "i686 features enabled     ${i686-no}"
5670     echo "CMOV is fast              ${fast_cmov-no}"
5671     echo "EBX available             ${ebx_available-no}"
5672     echo "EBP available             ${ebp_available-no}"
5673 fi
5674 if enabled aarch64; then
5675     echo "NEON enabled              ${neon-no}"
5676     echo "VFP enabled               ${vfp-no}"
5677 fi
5678 if enabled arm; then
5679     echo "ARMv5TE enabled           ${armv5te-no}"
5680     echo "ARMv6 enabled             ${armv6-no}"
5681     echo "ARMv6T2 enabled           ${armv6t2-no}"
5682     echo "VFP enabled               ${vfp-no}"
5683     echo "NEON enabled              ${neon-no}"
5684     echo "THUMB enabled             ${thumb-no}"
5685 fi
5686 if enabled mips; then
5687     echo "MIPS FPU enabled          ${mipsfpu-no}"
5688     echo "MIPS32R5 enabled          ${mips32r5-no}"
5689     echo "MIPS64R6 enabled          ${mips64r6-no}"
5690     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5691     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5692     echo "MIPS MSA enabled          ${msa-no}"
5693     echo "LOONGSON3 enabled         ${loongson3-no}"
5694 fi
5695 if enabled ppc; then
5696     echo "AltiVec enabled           ${altivec-no}"
5697     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5698     echo "PPC VSX optimizations     ${vsx-no}"
5699     echo "dcbzl available           ${dcbzl-no}"
5700 fi
5701 echo "debug symbols             ${debug-no}"
5702 echo "strip symbols             ${stripping-no}"
5703 echo "optimize for size         ${small-no}"
5704 echo "optimizations             ${optimizations-no}"
5705 echo "static                    ${static-no}"
5706 echo "shared                    ${shared-no}"
5707 echo "postprocessing support    ${postproc-no}"
5708 echo "new filter support        ${avfilter-no}"
5709 echo "network support           ${network-no}"
5710 echo "threading support         ${thread_type-no}"
5711 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5712 echo "SDL support               ${sdl-no}"
5713 echo "opencl enabled            ${opencl-no}"
5714 echo "texi2html enabled         ${texi2html-no}"
5715 echo "perl enabled              ${perl-no}"
5716 echo "pod2man enabled           ${pod2man-no}"
5717 echo "makeinfo enabled          ${makeinfo-no}"
5718 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5719 test -n "$random_seed" &&
5720     echo "random seed               ${random_seed}"
5721 echo
5722
5723 echo "External libraries:"
5724 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5725 echo
5726
5727 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5728     echo "Enabled ${type}s:"
5729     eval list=\$$(toupper $type)_LIST
5730     print_enabled '_*' $list | print_3_columns
5731     echo
5732 done
5733
5734 license="LGPL version 2.1 or later"
5735 if enabled nonfree; then
5736     license="nonfree and unredistributable"
5737 elif enabled gplv3; then
5738     license="GPL version 3 or later"
5739 elif enabled lgplv3; then
5740     license="LGPL version 3 or later"
5741 elif enabled gpl; then
5742     license="GPL version 2 or later"
5743 fi
5744
5745 echo "License: $license"
5746
5747 echo "Creating config.mak, config.h, and doc/config.texi..."
5748
5749 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5750
5751 enabled stripping || strip="echo skipping strip"
5752
5753 config_files="$TMPH config.mak doc/config.texi"
5754
5755 cat > config.mak <<EOF
5756 # Automatically generated by configure - do not modify!
5757 ifndef FFMPEG_CONFIG_MAK
5758 FFMPEG_CONFIG_MAK=1
5759 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5760 prefix=$prefix
5761 LIBDIR=\$(DESTDIR)$libdir
5762 SHLIBDIR=\$(DESTDIR)$shlibdir
5763 INCDIR=\$(DESTDIR)$incdir
5764 BINDIR=\$(DESTDIR)$bindir
5765 DATADIR=\$(DESTDIR)$datadir
5766 DOCDIR=\$(DESTDIR)$docdir
5767 MANDIR=\$(DESTDIR)$mandir
5768 SRC_PATH=$source_path
5769 ifndef MAIN_MAKEFILE
5770 SRC_PATH:=\$(SRC_PATH:.%=..%)
5771 endif
5772 CC_IDENT=$cc_ident
5773 ARCH=$arch
5774 INTRINSICS=$intrinsics
5775 CC=$cc
5776 CXX=$cxx
5777 AS=$as
5778 LD=$ld
5779 DEPCC=$dep_cc
5780 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5781 DEPAS=$as
5782 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5783 YASM=$yasmexe
5784 DEPYASM=$yasmexe
5785 AR=$ar
5786 ARFLAGS=$arflags
5787 AR_O=$ar_o
5788 RANLIB=$ranlib
5789 STRIP=$strip
5790 CP=cp -p
5791 LN_S=$ln_s
5792 CPPFLAGS=$CPPFLAGS
5793 CFLAGS=$CFLAGS
5794 CXXFLAGS=$CXXFLAGS
5795 ASFLAGS=$ASFLAGS
5796 AS_C=$AS_C
5797 AS_O=$AS_O
5798 CC_C=$CC_C
5799 CC_E=$CC_E
5800 CC_O=$CC_O
5801 CXX_C=$CXX_C
5802 CXX_O=$CXX_O
5803 LD_O=$LD_O
5804 LD_LIB=$LD_LIB
5805 LD_PATH=$LD_PATH
5806 DLLTOOL=$dlltool
5807 WINDRES=$windres
5808 DEPWINDRES=$dep_cc
5809 DOXYGEN=$doxygen
5810 LDFLAGS=$LDFLAGS
5811 LDEXEFLAGS=$LDEXEFLAGS
5812 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5813 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5814 YASMFLAGS=$YASMFLAGS
5815 BUILDSUF=$build_suffix
5816 PROGSSUF=$progs_suffix
5817 FULLNAME=$FULLNAME
5818 LIBPREF=$LIBPREF
5819 LIBSUF=$LIBSUF
5820 LIBNAME=$LIBNAME
5821 SLIBPREF=$SLIBPREF
5822 SLIBSUF=$SLIBSUF
5823 EXESUF=$EXESUF
5824 EXTRA_VERSION=$extra_version
5825 CCDEP=$CCDEP
5826 CXXDEP=$CXXDEP
5827 CCDEP_FLAGS=$CCDEP_FLAGS
5828 ASDEP=$ASDEP
5829 ASDEP_FLAGS=$ASDEP_FLAGS
5830 CC_DEPFLAGS=$CC_DEPFLAGS
5831 AS_DEPFLAGS=$AS_DEPFLAGS
5832 HOSTCC=$host_cc
5833 HOSTLD=$host_ld
5834 HOSTCFLAGS=$host_cflags
5835 HOSTCPPFLAGS=$host_cppflags
5836 HOSTEXESUF=$HOSTEXESUF
5837 HOSTLDFLAGS=$host_ldflags
5838 HOSTLIBS=$host_libs
5839 DEPHOSTCC=$host_cc
5840 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5841 HOSTCCDEP=$HOSTCCDEP
5842 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5843 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5844 HOSTCC_C=$HOSTCC_C
5845 HOSTCC_O=$HOSTCC_O
5846 HOSTLD_O=$HOSTLD_O
5847 TARGET_EXEC=$target_exec $target_exec_args
5848 TARGET_PATH=$target_path
5849 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5850 CFLAGS-ffplay=$sdl_cflags
5851 ZLIB=$($ldflags_filter -lz)
5852 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5853 EXTRALIBS=$extralibs
5854 COMPAT_OBJS=$compat_objs
5855 EXEOBJS=$exeobjs
5856 INSTALL=$install
5857 LIBTARGET=${LIBTARGET}
5858 SLIBNAME=${SLIBNAME}
5859 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5860 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5861 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5862 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5863 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5864 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5865 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5866 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5867 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5868 NOREDZONE_FLAGS=$noredzone_flags
5869 EOF
5870
5871 get_version(){
5872     lcname=lib${1}
5873     name=$(toupper $lcname)
5874     file=$source_path/$lcname/version.h
5875     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5876     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5877     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5878     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5879     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5880     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5881 }
5882
5883 map 'get_version $v' $LIBRARY_LIST
5884
5885 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5886
5887 print_program_libs(){
5888     eval "program_libs=\$${1}_libs"
5889     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5890 }
5891
5892 map 'print_program_libs $v' $PROGRAM_LIST
5893
5894 cat > $TMPH <<EOF
5895 /* Automatically generated by configure - do not modify! */
5896 #ifndef FFMPEG_CONFIG_H
5897 #define FFMPEG_CONFIG_H
5898 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5899 #define FFMPEG_LICENSE "$(c_escape $license)"
5900 #define CONFIG_THIS_YEAR 2015
5901 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5902 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5903 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5904 #define av_restrict $_restrict
5905 #define EXTERN_PREFIX "${extern_prefix}"
5906 #define EXTERN_ASM ${extern_prefix}
5907 #define BUILDSUF "$build_suffix"
5908 #define SLIBSUF "$SLIBSUF"
5909 #define HAVE_MMX2 HAVE_MMXEXT
5910 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5911 EOF
5912
5913 test -n "$assert_level" &&
5914     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5915
5916 test -n "$malloc_prefix" &&
5917     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5918
5919 if enabled yasm; then
5920     append config_files $TMPASM
5921     printf '' >$TMPASM
5922 fi
5923
5924 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5925
5926
5927 mkdir -p doc
5928 mkdir -p tests
5929 echo "@c auto-generated by configure" > doc/config.texi
5930
5931 print_config ARCH_   "$config_files" $ARCH_LIST
5932 print_config HAVE_   "$config_files" $HAVE_LIST
5933 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5934                                      $CONFIG_EXTRA      \
5935                                      $ALL_COMPONENTS    \
5936
5937 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5938 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5939
5940 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5941 cp_if_changed $TMPH config.h
5942 touch .config
5943
5944 enabled yasm && cp_if_changed $TMPASM config.asm
5945
5946 cat > $TMPH <<EOF
5947 /* Generated by ffconf */
5948 #ifndef AVUTIL_AVCONFIG_H
5949 #define AVUTIL_AVCONFIG_H
5950 EOF
5951
5952 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5953
5954 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5955
5956 cp_if_changed $TMPH libavutil/avconfig.h
5957
5958 if test -n "$WARNINGS"; then
5959     printf "\n$WARNINGS"
5960     enabled fatal_warnings && exit 1
5961 fi
5962
5963 # build pkg-config files
5964
5965 lib_version(){
5966     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5967 }
5968
5969 pkgconfig_generate(){
5970     name=$1
5971     shortname=${name#lib}${build_suffix}
5972     comment=$2
5973     version=$3
5974     libs=$4
5975     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5976     requires=${requires%, }
5977     enabled ${name#lib} || return 0
5978     mkdir -p $name
5979     cat <<EOF > $name/$name${build_suffix}.pc
5980 prefix=$prefix
5981 exec_prefix=\${prefix}
5982 libdir=$libdir
5983 includedir=$incdir
5984
5985 Name: $name
5986 Description: $comment
5987 Version: $version
5988 Requires: $(enabled shared || echo $requires)
5989 Requires.private: $(enabled shared && echo $requires)
5990 Conflicts:
5991 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5992 Libs.private: $(enabled shared && echo $libs)
5993 Cflags: -I\${includedir}
5994 EOF
5995
5996 mkdir -p doc/examples/pc-uninstalled
5997 includedir=${source_path}
5998 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5999     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6000 prefix=
6001 exec_prefix=
6002 libdir=\${pcfiledir}/../../../$name
6003 includedir=${includedir}
6004
6005 Name: $name
6006 Description: $comment
6007 Version: $version
6008 Requires: $requires
6009 Conflicts:
6010 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6011 Cflags: -I\${includedir}
6012 EOF
6013 }
6014
6015 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6016 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6017 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6018 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6019 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6020 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6021 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6022 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6023 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"