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 ${ext}_inline"'
2067 done
2068
2069 aligned_stack_if_any="aarch64 ppc x86"
2070 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2071 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2072 fast_unaligned_if_any="aarch64 ppc x86"
2073 simd_align_16_if_any="altivec neon sse"
2074
2075 # system capabilities
2076
2077 symver_if_any="symver_asm_label symver_gnu_asm"
2078 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2079
2080 # threading support
2081 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2082 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2083 atomics_win32_if="MemoryBarrier"
2084 atomics_native_if_any="$ATOMICS_LIST"
2085 w32threads_deps="atomics_native"
2086 threads_if_any="$THREADS_LIST"
2087
2088 # subsystems
2089 dct_select="rdft"
2090 error_resilience_select="me_cmp"
2091 faandct_deps="faan fdctdsp"
2092 faanidct_deps="faan idctdsp"
2093 frame_thread_encoder_deps="encoders threads"
2094 intrax8_select="error_resilience"
2095 mdct_select="fft"
2096 rdft_select="fft"
2097 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2098 mpeg_er_select="error_resilience"
2099 mpegaudio_select="mpegaudiodsp"
2100 mpegaudiodsp_select="dct"
2101 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2102 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2103 qsvdec_select="qsv"
2104 qsvenc_select="qsv"
2105
2106 # decoders / encoders
2107 aac_decoder_select="imdct15 mdct sinewin"
2108 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2109 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2110 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2111 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2112 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2113 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2114 aic_decoder_select="golomb idctdsp"
2115 alac_encoder_select="lpc"
2116 als_decoder_select="bswapdsp"
2117 amrnb_decoder_select="lsp"
2118 amrwb_decoder_select="lsp"
2119 amv_decoder_select="sp5x_decoder exif"
2120 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2121 ape_decoder_select="bswapdsp llauddsp"
2122 apng_decoder_select="zlib"
2123 apng_encoder_select="huffyuvencdsp zlib"
2124 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2125 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2126 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2127 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2128 atrac1_decoder_select="mdct sinewin"
2129 atrac3_decoder_select="mdct"
2130 atrac3p_decoder_select="mdct sinewin"
2131 avrn_decoder_select="exif jpegtables"
2132 bink_decoder_select="blockdsp hpeldsp"
2133 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2134 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2135 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2136 cllc_decoder_select="bswapdsp"
2137 comfortnoise_encoder_select="lpc"
2138 cook_decoder_select="audiodsp mdct sinewin"
2139 cscd_decoder_select="lzo"
2140 cscd_decoder_suggest="zlib"
2141 dca_decoder_select="fmtconvert mdct"
2142 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2143 dnxhd_decoder_select="blockdsp idctdsp"
2144 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2145 dvvideo_decoder_select="dvprofile idctdsp"
2146 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2147 dxa_decoder_select="zlib"
2148 eac3_decoder_select="ac3_decoder"
2149 eac3_encoder_select="ac3_encoder"
2150 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2151 eatgq_decoder_select="aandcttables"
2152 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2153 exr_decoder_select="zlib"
2154 ffv1_decoder_select="golomb rangecoder"
2155 ffv1_encoder_select="rangecoder"
2156 ffvhuff_decoder_select="huffyuv_decoder"
2157 ffvhuff_encoder_select="huffyuv_encoder"
2158 fic_decoder_select="golomb"
2159 flac_decoder_select="golomb"
2160 flac_encoder_select="bswapdsp golomb lpc"
2161 flashsv_decoder_select="zlib"
2162 flashsv_encoder_select="zlib"
2163 flashsv2_encoder_select="zlib"
2164 flashsv2_decoder_select="zlib"
2165 flv_decoder_select="h263_decoder"
2166 flv_encoder_select="h263_encoder"
2167 fourxm_decoder_select="blockdsp bswapdsp"
2168 fraps_decoder_select="bswapdsp huffman"
2169 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2170 g729_decoder_select="audiodsp"
2171 h261_decoder_select="mpeg_er mpegvideo"
2172 h261_encoder_select="aandcttables mpegvideoenc"
2173 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2174 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2175 h263i_decoder_select="h263_decoder"
2176 h263p_decoder_select="h263_decoder"
2177 h263p_encoder_select="h263_encoder"
2178 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2179 h264_decoder_suggest="error_resilience"
2180 h264_qsv_decoder_deps="libmfx"
2181 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2182 h264_qsv_encoder_deps="libmfx"
2183 h264_qsv_encoder_select="qsvenc"
2184 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2185 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2186 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2187 iac_decoder_select="imc_decoder"
2188 imc_decoder_select="bswapdsp fft mdct sinewin"
2189 indeo3_decoder_select="hpeldsp"
2190 interplay_video_decoder_select="hpeldsp"
2191 jpegls_decoder_select="golomb mjpeg_decoder"
2192 jpegls_encoder_select="golomb"
2193 jv_decoder_select="blockdsp"
2194 lagarith_decoder_select="huffyuvdsp"
2195 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2196 loco_decoder_select="golomb"
2197 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2198 metasound_decoder_select="lsp mdct sinewin"
2199 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2200 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2201 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2202 mjpegb_decoder_select="mjpeg_decoder"
2203 mlp_decoder_select="mlp_parser"
2204 motionpixels_decoder_select="bswapdsp"
2205 mp1_decoder_select="mpegaudio"
2206 mp1float_decoder_select="mpegaudio"
2207 mp2_decoder_select="mpegaudio"
2208 mp2float_decoder_select="mpegaudio"
2209 mp3_decoder_select="mpegaudio"
2210 mp3adu_decoder_select="mpegaudio"
2211 mp3adufloat_decoder_select="mpegaudio"
2212 mp3float_decoder_select="mpegaudio"
2213 mp3on4_decoder_select="mpegaudio"
2214 mp3on4float_decoder_select="mpegaudio"
2215 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2216 mpc8_decoder_select="mpegaudiodsp"
2217 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2218 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2219 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2220 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2221 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2222 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2223 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2224 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2225 mpeg4_encoder_select="h263_encoder"
2226 msmpeg4v1_decoder_select="h263_decoder"
2227 msmpeg4v2_decoder_select="h263_decoder"
2228 msmpeg4v2_encoder_select="h263_encoder"
2229 msmpeg4v3_decoder_select="h263_decoder"
2230 msmpeg4v3_encoder_select="h263_encoder"
2231 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2232 mxpeg_decoder_select="mjpeg_decoder"
2233 nellymoser_decoder_select="mdct sinewin"
2234 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2235 nuv_decoder_select="idctdsp lzo"
2236 on2avc_decoder_select="mdct"
2237 opus_decoder_deps="swresample"
2238 opus_decoder_select="imdct15"
2239 png_decoder_select="zlib"
2240 png_encoder_select="huffyuvencdsp zlib"
2241 prores_decoder_select="blockdsp idctdsp"
2242 prores_encoder_select="fdctdsp"
2243 qcelp_decoder_select="lsp"
2244 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2245 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2246 ra_144_decoder_select="audiodsp"
2247 ralf_decoder_select="golomb"
2248 rawvideo_decoder_select="bswapdsp"
2249 rtjpeg_decoder_select="me_cmp"
2250 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2251 rv10_encoder_select="h263_encoder"
2252 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2253 rv20_encoder_select="h263_encoder"
2254 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2255 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2256 shorten_decoder_select="golomb"
2257 sipr_decoder_select="lsp"
2258 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2259 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2260 sonic_decoder_select="golomb rangecoder"
2261 sonic_encoder_select="golomb rangecoder"
2262 sonic_ls_encoder_select="golomb rangecoder"
2263 sp5x_decoder_select="mjpeg_decoder"
2264 svq1_decoder_select="hpeldsp"
2265 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2266 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2267 svq3_decoder_suggest="zlib"
2268 tak_decoder_select="audiodsp"
2269 tdsc_decoder_select="zlib mjpeg_decoder"
2270 theora_decoder_select="vp3_decoder"
2271 thp_decoder_select="mjpeg_decoder"
2272 tiff_decoder_suggest="zlib lzma"
2273 tiff_encoder_suggest="zlib"
2274 truehd_decoder_select="mlp_parser"
2275 truemotion2_decoder_select="bswapdsp"
2276 truespeech_decoder_select="bswapdsp"
2277 tscc_decoder_select="zlib"
2278 twinvq_decoder_select="mdct lsp sinewin"
2279 utvideo_decoder_select="bswapdsp"
2280 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2281 vble_decoder_select="huffyuvdsp"
2282 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2283 vc1image_decoder_select="vc1_decoder"
2284 vorbis_decoder_select="mdct"
2285 vorbis_encoder_select="mdct"
2286 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2287 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2288 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2289 vp6a_decoder_select="vp6_decoder"
2290 vp6f_decoder_select="vp6_decoder"
2291 vp7_decoder_select="h264pred videodsp"
2292 vp8_decoder_select="h264pred videodsp"
2293 vp9_decoder_select="videodsp vp9_parser"
2294 webp_decoder_select="vp8_decoder"
2295 wmalossless_decoder_select="llauddsp"
2296 wmapro_decoder_select="mdct sinewin wma_freqs"
2297 wmav1_decoder_select="mdct sinewin wma_freqs"
2298 wmav1_encoder_select="mdct sinewin wma_freqs"
2299 wmav2_decoder_select="mdct sinewin wma_freqs"
2300 wmav2_encoder_select="mdct sinewin wma_freqs"
2301 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2302 wmv1_decoder_select="h263_decoder"
2303 wmv1_encoder_select="h263_encoder"
2304 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2305 wmv2_encoder_select="h263_encoder"
2306 wmv3_decoder_select="vc1_decoder"
2307 wmv3image_decoder_select="wmv3_decoder"
2308 zerocodec_decoder_select="zlib"
2309 zlib_decoder_select="zlib"
2310 zlib_encoder_select="zlib"
2311 zmbv_decoder_select="zlib"
2312 zmbv_encoder_select="zlib"
2313
2314 # hardware accelerators
2315 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2316 dxva2_deps="dxva2api_h"
2317 vaapi_deps="va_va_h"
2318 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2319 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2320 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2321 xvmc_deps="X11_extensions_XvMClib_h"
2322
2323 h263_vaapi_hwaccel_deps="vaapi"
2324 h263_vaapi_hwaccel_select="h263_decoder"
2325 h263_vdpau_hwaccel_deps="vdpau"
2326 h263_vdpau_hwaccel_select="h263_decoder"
2327 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2328 h264_dxva2_hwaccel_deps="dxva2"
2329 h264_dxva2_hwaccel_select="h264_decoder"
2330 h264_mmal_decoder_deps="mmal"
2331 h264_mmal_hwaccel_deps="mmal"
2332 h264_mmal_decoder_select="h264_decoder"
2333 h264_mmal_encoder_deps="mmal"
2334 h264_qsv_hwaccel_deps="libmfx"
2335 h264_vaapi_hwaccel_deps="vaapi"
2336 h264_vaapi_hwaccel_select="h264_decoder"
2337 h264_vda_decoder_deps="vda"
2338 h264_vda_decoder_select="h264_decoder"
2339 h264_vda_hwaccel_deps="vda"
2340 h264_vda_hwaccel_select="h264_decoder"
2341 h264_vda_old_hwaccel_deps="vda"
2342 h264_vda_old_hwaccel_select="h264_decoder"
2343 h264_vdpau_decoder_deps="vdpau"
2344 h264_vdpau_decoder_select="h264_decoder"
2345 h264_vdpau_hwaccel_deps="vdpau"
2346 h264_vdpau_hwaccel_select="h264_decoder"
2347 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2348 hevc_dxva2_hwaccel_select="hevc_decoder"
2349 mpeg_vdpau_decoder_deps="vdpau"
2350 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2351 mpeg_xvmc_hwaccel_deps="xvmc"
2352 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2353 mpeg1_vdpau_decoder_deps="vdpau"
2354 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2355 mpeg1_vdpau_hwaccel_deps="vdpau"
2356 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2357 mpeg1_xvmc_hwaccel_deps="xvmc"
2358 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2359 mpeg2_crystalhd_decoder_select="crystalhd"
2360 mpeg2_dxva2_hwaccel_deps="dxva2"
2361 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2362 mpeg2_vaapi_hwaccel_deps="vaapi"
2363 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2364 mpeg2_vdpau_hwaccel_deps="vdpau"
2365 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2366 mpeg2_xvmc_hwaccel_deps="xvmc"
2367 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2368 mpeg4_crystalhd_decoder_select="crystalhd"
2369 mpeg4_vaapi_hwaccel_deps="vaapi"
2370 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2371 mpeg4_vdpau_decoder_deps="vdpau"
2372 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2373 mpeg4_vdpau_hwaccel_deps="vdpau"
2374 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2375 msmpeg4_crystalhd_decoder_select="crystalhd"
2376 vc1_crystalhd_decoder_select="crystalhd"
2377 vc1_dxva2_hwaccel_deps="dxva2"
2378 vc1_dxva2_hwaccel_select="vc1_decoder"
2379 vc1_vaapi_hwaccel_deps="vaapi"
2380 vc1_vaapi_hwaccel_select="vc1_decoder"
2381 vc1_vdpau_decoder_deps="vdpau"
2382 vc1_vdpau_decoder_select="vc1_decoder"
2383 vc1_vdpau_hwaccel_deps="vdpau"
2384 vc1_vdpau_hwaccel_select="vc1_decoder"
2385 wmv3_crystalhd_decoder_select="crystalhd"
2386 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2387 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2388 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2389 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2390
2391 # parsers
2392 h264_parser_select="h264_decoder"
2393 hevc_parser_select="hevc_decoder"
2394 mpegvideo_parser_select="mpegvideo"
2395 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2396 vc1_parser_select="mpegvideo startcode vc1_decoder"
2397
2398 # bitstream_filters
2399 mjpeg2jpeg_bsf_select="jpegtables"
2400
2401 # external libraries
2402 libaacplus_encoder_deps="libaacplus"
2403 libcelt_decoder_deps="libcelt"
2404 libdcadec_decoder_deps="libdcadec"
2405 libfaac_encoder_deps="libfaac"
2406 libfaac_encoder_select="audio_frame_queue"
2407 libfdk_aac_decoder_deps="libfdk_aac"
2408 libfdk_aac_encoder_deps="libfdk_aac"
2409 libfdk_aac_encoder_select="audio_frame_queue"
2410 libgme_demuxer_deps="libgme"
2411 libgsm_decoder_deps="libgsm"
2412 libgsm_encoder_deps="libgsm"
2413 libgsm_ms_decoder_deps="libgsm"
2414 libgsm_ms_encoder_deps="libgsm"
2415 libilbc_decoder_deps="libilbc"
2416 libilbc_encoder_deps="libilbc"
2417 libmodplug_demuxer_deps="libmodplug"
2418 libmp3lame_encoder_deps="libmp3lame"
2419 libmp3lame_encoder_select="audio_frame_queue"
2420 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2421 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2422 libopencore_amrnb_encoder_select="audio_frame_queue"
2423 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2424 libopenh264_encoder_deps="libopenh264"
2425 libopenjpeg_decoder_deps="libopenjpeg"
2426 libopenjpeg_encoder_deps="libopenjpeg"
2427 libopus_decoder_deps="libopus"
2428 libopus_encoder_deps="libopus"
2429 libopus_encoder_select="audio_frame_queue"
2430 libquvi_demuxer_deps="libquvi"
2431 libschroedinger_decoder_deps="libschroedinger"
2432 libschroedinger_encoder_deps="libschroedinger"
2433 libshine_encoder_deps="libshine"
2434 libshine_encoder_select="audio_frame_queue"
2435 libspeex_decoder_deps="libspeex"
2436 libspeex_encoder_deps="libspeex"
2437 libspeex_encoder_select="audio_frame_queue"
2438 libstagefright_h264_decoder_deps="libstagefright_h264"
2439 libtheora_encoder_deps="libtheora"
2440 libtwolame_encoder_deps="libtwolame"
2441 libvo_aacenc_encoder_deps="libvo_aacenc"
2442 libvo_aacenc_encoder_select="audio_frame_queue"
2443 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2444 libvorbis_decoder_deps="libvorbis"
2445 libvorbis_encoder_deps="libvorbis"
2446 libvorbis_encoder_select="audio_frame_queue"
2447 libvpx_vp8_decoder_deps="libvpx"
2448 libvpx_vp8_encoder_deps="libvpx"
2449 libvpx_vp9_decoder_deps="libvpx"
2450 libvpx_vp9_encoder_deps="libvpx"
2451 libwavpack_encoder_deps="libwavpack"
2452 libwebp_encoder_deps="libwebp"
2453 libx264_encoder_deps="libx264"
2454 libx264rgb_encoder_deps="libx264"
2455 libx264rgb_encoder_select="libx264_encoder"
2456 libx265_encoder_deps="libx265"
2457 libxavs_encoder_deps="libxavs"
2458 libxvid_encoder_deps="libxvid"
2459 libutvideo_decoder_deps="libutvideo"
2460 libutvideo_encoder_deps="libutvideo"
2461 libzvbi_teletext_decoder_deps="libzvbi"
2462 nvenc_encoder_deps="nvenc"
2463 nvenc_h265_encoder_deps="nvenc"
2464
2465 # demuxers / muxers
2466 ac3_demuxer_select="ac3_parser"
2467 asf_demuxer_select="riffdec"
2468 asf_muxer_select="riffenc"
2469 asf_stream_muxer_select="asf_muxer"
2470 avi_demuxer_select="riffdec exif"
2471 avi_muxer_select="riffenc"
2472 avisynth_demuxer_deps="avisynth"
2473 avisynth_demuxer_select="riffdec"
2474 caf_demuxer_select="riffdec"
2475 dash_muxer_select="mp4_muxer"
2476 dirac_demuxer_select="dirac_parser"
2477 dts_demuxer_select="dca_parser"
2478 dtshd_demuxer_select="dca_parser"
2479 dv_demuxer_select="dvprofile"
2480 dv_muxer_select="dvprofile"
2481 dxa_demuxer_select="riffdec"
2482 eac3_demuxer_select="ac3_parser"
2483 f4v_muxer_select="mov_muxer"
2484 flac_demuxer_select="flac_parser"
2485 hds_muxer_select="flv_muxer"
2486 hls_muxer_select="mpegts_muxer"
2487 image2_alias_pix_demuxer_select="image2_demuxer"
2488 image2_brender_pix_demuxer_select="image2_demuxer"
2489 ipod_muxer_select="mov_muxer"
2490 ismv_muxer_select="mov_muxer"
2491 libnut_demuxer_deps="libnut"
2492 libnut_muxer_deps="libnut"
2493 matroska_audio_muxer_select="matroska_muxer"
2494 matroska_demuxer_select="riffdec"
2495 matroska_demuxer_suggest="bzlib lzo zlib"
2496 matroska_muxer_select="riffenc"
2497 mmf_muxer_select="riffenc"
2498 mov_demuxer_select="riffdec"
2499 mov_demuxer_suggest="zlib"
2500 mov_muxer_select="riffenc rtpenc_chain"
2501 mp3_demuxer_select="mpegaudio_parser"
2502 mp4_muxer_select="mov_muxer"
2503 mpegts_muxer_select="adts_muxer latm_muxer"
2504 mpegtsraw_demuxer_select="mpegts_demuxer"
2505 mxf_d10_muxer_select="mxf_muxer"
2506 mxf_opatom_muxer_select="mxf_muxer"
2507 nut_muxer_select="riffenc"
2508 nuv_demuxer_select="riffdec"
2509 oga_muxer_select="ogg_muxer"
2510 ogg_demuxer_select="golomb"
2511 opus_muxer_select="ogg_muxer"
2512 psp_muxer_select="mov_muxer"
2513 rtp_demuxer_select="sdp_demuxer"
2514 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2515 rtsp_demuxer_select="http_protocol rtpdec"
2516 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2517 sap_demuxer_select="sdp_demuxer"
2518 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2519 sdp_demuxer_select="rtpdec"
2520 smoothstreaming_muxer_select="ismv_muxer"
2521 spdif_muxer_select="aac_parser"
2522 spx_muxer_select="ogg_muxer"
2523 tak_demuxer_select="tak_parser"
2524 tg2_muxer_select="mov_muxer"
2525 tgp_muxer_select="mov_muxer"
2526 vobsub_demuxer_select="mpegps_demuxer"
2527 w64_demuxer_select="wav_demuxer"
2528 w64_muxer_select="wav_muxer"
2529 wav_demuxer_select="riffdec"
2530 wav_muxer_select="riffenc"
2531 webm_muxer_select="riffenc"
2532 wtv_demuxer_select="riffdec"
2533 wtv_muxer_select="riffenc"
2534 xmv_demuxer_select="riffdec"
2535 xwma_demuxer_select="riffdec"
2536
2537 # indevs / outdevs
2538 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2539 alsa_outdev_deps="alsa_asoundlib_h"
2540 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2541 avfoundation_indev_select="avfoundation"
2542 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2543 caca_outdev_deps="libcaca"
2544 decklink_outdev_deps="decklink pthreads"
2545 decklink_outdev_extralibs="-lstdc++"
2546 decklink_indev_deps="decklink pthreads"
2547 decklink_indev_extralibs="-lstdc++"
2548 dshow_indev_deps="IBaseFilter"
2549 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2550 dv1394_indev_deps="dv1394"
2551 dv1394_indev_select="dv_demuxer"
2552 fbdev_indev_deps="linux_fb_h"
2553 fbdev_outdev_deps="linux_fb_h"
2554 gdigrab_indev_deps="CreateDIBSection"
2555 gdigrab_indev_extralibs="-lgdi32"
2556 gdigrab_indev_select="bmp_decoder"
2557 iec61883_indev_deps="libiec61883"
2558 jack_indev_deps="jack_jack_h sem_timedwait"
2559 lavfi_indev_deps="avfilter"
2560 libcdio_indev_deps="libcdio"
2561 libdc1394_indev_deps="libdc1394"
2562 libv4l2_indev_deps="libv4l2"
2563 openal_indev_deps="openal"
2564 opengl_outdev_deps="opengl"
2565 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2566 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2567 pulse_indev_deps="libpulse"
2568 pulse_outdev_deps="libpulse"
2569 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2570 qtkit_indev_select="qtkit"
2571 sdl_outdev_deps="sdl"
2572 sndio_indev_deps="sndio_h"
2573 sndio_outdev_deps="sndio_h"
2574 v4l_indev_deps="linux_videodev_h"
2575 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2576 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2577 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2578 vfwcap_indev_extralibs="-lavicap32"
2579 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2580 xv_outdev_extralibs="-lXv -lX11 -lXext"
2581 x11grab_indev_deps="x11grab"
2582 x11grab_xcb_indev_deps="libxcb"
2583
2584 # protocols
2585 bluray_protocol_deps="libbluray"
2586 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2587 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2588 ffrtmpcrypt_protocol_select="tcp_protocol"
2589 ffrtmphttp_protocol_deps="!librtmp_protocol"
2590 ffrtmphttp_protocol_select="http_protocol"
2591 ftp_protocol_select="tcp_protocol"
2592 gopher_protocol_select="network"
2593 http_protocol_select="tcp_protocol"
2594 httpproxy_protocol_select="tcp_protocol"
2595 https_protocol_select="tls_protocol"
2596 icecast_protocol_select="http_protocol"
2597 librtmp_protocol_deps="librtmp"
2598 librtmpe_protocol_deps="librtmp"
2599 librtmps_protocol_deps="librtmp"
2600 librtmpt_protocol_deps="librtmp"
2601 librtmpte_protocol_deps="librtmp"
2602 libsmbclient_protocol_deps="libsmbclient gplv3"
2603 libssh_protocol_deps="libssh"
2604 mmsh_protocol_select="http_protocol"
2605 mmst_protocol_select="network"
2606 rtmp_protocol_deps="!librtmp_protocol"
2607 rtmp_protocol_select="tcp_protocol"
2608 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2609 rtmps_protocol_deps="!librtmp_protocol"
2610 rtmps_protocol_select="tls_protocol"
2611 rtmpt_protocol_select="ffrtmphttp_protocol"
2612 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2613 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2614 rtp_protocol_select="udp_protocol"
2615 sctp_protocol_deps="struct_sctp_event_subscribe"
2616 sctp_protocol_select="network"
2617 srtp_protocol_select="rtp_protocol"
2618 tcp_protocol_select="network"
2619 tls_protocol_deps_any="openssl gnutls"
2620 tls_protocol_select="tcp_protocol"
2621 udp_protocol_select="network"
2622 udplite_protocol_select="network"
2623 unix_protocol_deps="sys_un_h"
2624 unix_protocol_select="network"
2625
2626 # filters
2627 amovie_filter_deps="avcodec avformat"
2628 aresample_filter_deps="swresample"
2629 ass_filter_deps="libass"
2630 asyncts_filter_deps="avresample"
2631 atempo_filter_deps="avcodec"
2632 atempo_filter_select="rdft"
2633 azmq_filter_deps="libzmq"
2634 blackframe_filter_deps="gpl"
2635 boxblur_filter_deps="gpl"
2636 bs2b_filter_deps="libbs2b"
2637 colormatrix_filter_deps="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 frei0r_filter_deps="frei0r dlopen"
2648 frei0r_src_filter_deps="frei0r dlopen"
2649 fspp_filter_deps="gpl"
2650 geq_filter_deps="gpl"
2651 histeq_filter_deps="gpl"
2652 hqdn3d_filter_deps="gpl"
2653 interlace_filter_deps="gpl"
2654 kerndeint_filter_deps="gpl"
2655 ladspa_filter_deps="ladspa dlopen"
2656 mcdeint_filter_deps="avcodec gpl"
2657 movie_filter_deps="avcodec avformat"
2658 mpdecimate_filter_deps="gpl"
2659 mpdecimate_filter_select="pixelutils"
2660 mptestsrc_filter_deps="gpl"
2661 negate_filter_deps="lut_filter"
2662 perspective_filter_deps="gpl"
2663 pp7_filter_deps="gpl"
2664 ocv_filter_deps="libopencv"
2665 owdenoise_filter_deps="gpl"
2666 pan_filter_deps="swresample"
2667 phase_filter_deps="gpl"
2668 pp_filter_deps="gpl postproc"
2669 pullup_filter_deps="gpl"
2670 removelogo_filter_deps="avcodec avformat swscale"
2671 repeatfields_filter_deps="gpl"
2672 resample_filter_deps="avresample"
2673 sab_filter_deps="gpl swscale"
2674 scale_filter_deps="swscale"
2675 select_filter_select="pixelutils"
2676 smartblur_filter_deps="gpl swscale"
2677 showspectrum_filter_deps="avcodec"
2678 showspectrum_filter_select="rdft"
2679 spp_filter_deps="gpl avcodec"
2680 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2681 stereo3d_filter_deps="gpl"
2682 subtitles_filter_deps="avformat avcodec libass"
2683 super2xsai_filter_deps="gpl"
2684 tinterlace_filter_deps="gpl"
2685 vidstabdetect_filter_deps="libvidstab"
2686 vidstabtransform_filter_deps="libvidstab"
2687 pixfmts_super2xsai_test_deps="super2xsai_filter"
2688 tinterlace_merge_test_deps="tinterlace_filter"
2689 tinterlace_pad_test_deps="tinterlace_filter"
2690 uspp_filter_deps="gpl avcodec"
2691 zmq_filter_deps="libzmq"
2692 zoompan_filter_deps="swscale"
2693
2694 # examples
2695 avio_reading="avformat avcodec avutil"
2696 avio_list_dir="avformat avutil"
2697 avcodec_example_deps="avcodec avutil"
2698 decoding_encoding_example_deps="avcodec avformat avutil"
2699 demuxing_decoding_example_deps="avcodec avformat avutil"
2700 extract_mvs_example_deps="avcodec avformat avutil"
2701 filter_audio_example_deps="avfilter avutil"
2702 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2703 filtering_video_example_deps="avfilter avcodec avformat avutil"
2704 metadata_example_deps="avformat avutil"
2705 muxing_example_deps="avcodec avformat avutil swscale"
2706 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2707 remuxing_example_deps="avcodec avformat avutil"
2708 resampling_audio_example_deps="avutil swresample"
2709 scaling_video_example_deps="avutil swscale"
2710 transcode_aac_example_deps="avcodec avformat swresample"
2711 transcoding_example_deps="avfilter avcodec avformat avutil"
2712
2713 # libraries, in linking order
2714 avcodec_deps="avutil"
2715 avdevice_deps="avformat avcodec avutil"
2716 avfilter_deps="avutil"
2717 avformat_deps="avcodec avutil"
2718 avresample_deps="avutil"
2719 postproc_deps="avutil gpl"
2720 swresample_deps="avutil"
2721 swscale_deps="avutil"
2722
2723 # programs
2724 ffmpeg_deps="avcodec avfilter avformat swresample"
2725 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2726                null_filter
2727                setpts_filter trim_filter"
2728 ffplay_deps="avcodec avformat swscale swresample sdl"
2729 ffplay_libs='$sdl_libs'
2730 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2731 ffprobe_deps="avcodec avformat"
2732 ffserver_deps="avformat fork sarestart"
2733 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2734
2735 # documentation
2736 podpages_deps="perl"
2737 manpages_deps="perl pod2man"
2738 htmlpages_deps="perl"
2739 htmlpages_deps_any="makeinfo_html texi2html"
2740 txtpages_deps="perl makeinfo"
2741 doc_deps_any="manpages htmlpages podpages txtpages"
2742
2743 # default parameters
2744
2745 logfile="config.log"
2746
2747 # installation paths
2748 prefix_default="/usr/local"
2749 bindir_default='${prefix}/bin'
2750 datadir_default='${prefix}/share/ffmpeg'
2751 docdir_default='${prefix}/share/doc/ffmpeg'
2752 incdir_default='${prefix}/include'
2753 libdir_default='${prefix}/lib'
2754 mandir_default='${prefix}/share/man'
2755
2756 # toolchain
2757 ar_default="ar"
2758 cc_default="gcc"
2759 cxx_default="g++"
2760 host_cc_default="gcc"
2761 cp_f="cp -f"
2762 doxygen_default="doxygen"
2763 install="install"
2764 ln_s="ln -s -f"
2765 nm_default="nm -g"
2766 objformat="elf"
2767 pkg_config_default=pkg-config
2768 if ranlib 2>&1 | grep -q "\-D "; then
2769     ranlib_default="ranlib -D"
2770 else
2771     ranlib_default="ranlib"
2772 fi
2773 strip_default="strip"
2774 yasmexe_default="yasm"
2775 windres_default="windres"
2776
2777 # OS
2778 target_os_default=$(tolower $(uname -s))
2779 host_os=$target_os_default
2780
2781 # machine
2782 if test "$target_os_default" = aix; then
2783     arch_default=$(uname -p)
2784     strip_default="strip -X32_64"
2785 else
2786     arch_default=$(uname -m)
2787 fi
2788 cpu="generic"
2789 intrinsics="none"
2790
2791 # configurable options
2792 enable $PROGRAM_LIST
2793 enable $DOCUMENT_LIST
2794 enable $EXAMPLE_LIST
2795 enable $(filter_out avresample $LIBRARY_LIST)
2796 enable stripping
2797
2798 enable asm
2799 enable debug
2800 enable doc
2801 enable faan faandct faanidct
2802 enable optimizations
2803 enable runtime_cpudetect
2804 enable safe_bitstream_reader
2805 enable static
2806 enable swscale_alpha
2807 enable valgrind_backtrace
2808
2809 sws_max_filter_size_default=256
2810 set_default sws_max_filter_size
2811
2812 # Enable hwaccels by default.
2813 enable dxva2 vaapi vda vdpau xvmc
2814 enable xlib
2815
2816 # build settings
2817 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2818 LIBPREF="lib"
2819 LIBSUF=".a"
2820 FULLNAME='$(NAME)$(BUILDSUF)'
2821 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2822 SLIBPREF="lib"
2823 SLIBSUF=".so"
2824 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2825 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2826 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2827 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2828 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2829 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2830
2831 asflags_filter=echo
2832 cflags_filter=echo
2833 ldflags_filter=echo
2834
2835 AS_C='-c'
2836 AS_O='-o $@'
2837 CC_C='-c'
2838 CC_E='-E -o $@'
2839 CC_O='-o $@'
2840 CXX_C='-c'
2841 CXX_O='-o $@'
2842 LD_O='-o $@'
2843 LD_LIB='-l%'
2844 LD_PATH='-L'
2845 HOSTCC_C='-c'
2846 HOSTCC_E='-E -o $@'
2847 HOSTCC_O='-o $@'
2848 HOSTLD_O='-o $@'
2849
2850 host_libs='-lm'
2851 host_cflags_filter=echo
2852 host_ldflags_filter=echo
2853
2854 target_path='$(CURDIR)'
2855
2856 # since the object filename is not given with the -MM flag, the compiler
2857 # is only able to print the basename, and we must add the path ourselves
2858 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2859 DEPFLAGS='-MM'
2860
2861 # find source path
2862 if test -f configure; then
2863     source_path=.
2864 else
2865     source_path=$(cd $(dirname "$0"); pwd)
2866     echo "$source_path" | grep -q '[[:blank:]]' &&
2867         die "Out of tree builds are impossible with whitespace in source path."
2868     test -e "$source_path/config.h" &&
2869         die "Out of tree builds are impossible with config.h in source dir."
2870 fi
2871
2872 for v in "$@"; do
2873     r=${v#*=}
2874     l=${v%"$r"}
2875     r=$(sh_quote "$r")
2876     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2877 done
2878
2879 find_things(){
2880     thing=$1
2881     pattern=$2
2882     file=$source_path/$3
2883     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2884 }
2885
2886 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2887 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2888 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2889 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2890 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2891 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2892 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2893 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2894 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2895 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2896 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2897
2898 ALL_COMPONENTS="
2899     $BSF_LIST
2900     $DECODER_LIST
2901     $DEMUXER_LIST
2902     $ENCODER_LIST
2903     $FILTER_LIST
2904     $HWACCEL_LIST
2905     $INDEV_LIST
2906     $MUXER_LIST
2907     $OUTDEV_LIST
2908     $PARSER_LIST
2909     $PROTOCOL_LIST
2910 "
2911
2912 for n in $COMPONENT_LIST; do
2913     v=$(toupper ${n%s})_LIST
2914     eval enable \$$v
2915     eval ${n}_if_any="\$$v"
2916 done
2917
2918 enable $ARCH_EXT_LIST
2919
2920 die_unknown(){
2921     echo "Unknown option \"$1\"."
2922     echo "See $0 --help for available options."
2923     exit 1
2924 }
2925
2926 print_3_columns() {
2927     cat | tr ' ' '\n' | sort | pr -r -3 -t
2928 }
2929
2930 show_list() {
2931     suffix=_$1
2932     shift
2933     echo $* | sed s/$suffix//g | print_3_columns
2934     exit 0
2935 }
2936
2937 rand_list(){
2938     IFS=', '
2939     set -- $*
2940     unset IFS
2941     for thing; do
2942         comp=${thing%:*}
2943         prob=${thing#$comp}
2944         prob=${prob#:}
2945         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2946         echo "prob ${prob:-0.5}"
2947         printf '%s\n' $comp
2948     done
2949 }
2950
2951 do_random(){
2952     action=$1
2953     shift
2954     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2955     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2956 }
2957
2958 for opt do
2959     optval="${opt#*=}"
2960     case "$opt" in
2961         --extra-ldflags=*)
2962             add_ldflags $optval
2963         ;;
2964         --extra-ldexeflags=*)
2965             add_ldexeflags $optval
2966         ;;
2967         --extra-libs=*)
2968             add_extralibs $optval
2969         ;;
2970         --disable-devices)
2971             disable $INDEV_LIST $OUTDEV_LIST
2972         ;;
2973         --enable-debug=*)
2974             debuglevel="$optval"
2975         ;;
2976         --disable-programs)
2977             disable $PROGRAM_LIST
2978         ;;
2979         --disable-everything)
2980             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2981         ;;
2982         --disable-all)
2983             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2984             disable $LIBRARY_LIST $PROGRAM_LIST doc
2985         ;;
2986         --enable-random|--disable-random)
2987             action=${opt%%-random}
2988             do_random ${action#--} $COMPONENT_LIST
2989         ;;
2990         --enable-random=*|--disable-random=*)
2991             action=${opt%%-random=*}
2992             do_random ${action#--} $optval
2993         ;;
2994         --enable-*=*|--disable-*=*)
2995             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2996             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2997             eval list=\$$(toupper $thing)_LIST
2998             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2999             list=$(filter "$name" $list)
3000             [ "$list" = "" ] && warn "Option $opt did not match anything"
3001             $action $list
3002         ;;
3003         --enable-?*|--disable-?*)
3004             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3005             if is_in $option $COMPONENT_LIST; then
3006                 test $action = disable && action=unset
3007                 eval $action \$$(toupper ${option%s})_LIST
3008             elif is_in $option $CMDLINE_SELECT; then
3009                 $action $option
3010             else
3011                 die_unknown $opt
3012             fi
3013         ;;
3014         --list-*)
3015             NAME="${opt#--list-}"
3016             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3017             NAME=${NAME%s}
3018             eval show_list $NAME \$$(toupper $NAME)_LIST
3019         ;;
3020         --help|-h) show_help
3021         ;;
3022         --fatal-warnings) enable fatal_warnings
3023         ;;
3024         *)
3025             optname="${opt%%=*}"
3026             optname="${optname#--}"
3027             optname=$(echo "$optname" | sed 's/-/_/g')
3028             if is_in $optname $CMDLINE_SET; then
3029                 eval $optname='$optval'
3030             elif is_in $optname $CMDLINE_APPEND; then
3031                 append $optname "$optval"
3032             else
3033                 die_unknown $opt
3034             fi
3035         ;;
3036     esac
3037 done
3038
3039 disabled logging && logfile=/dev/null
3040
3041 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3042 set >> $logfile
3043
3044 test -n "$valgrind" && toolchain="valgrind-memcheck"
3045
3046 case "$toolchain" in
3047     clang-asan)
3048         cc_default="clang"
3049         add_cflags  -fsanitize=address
3050         add_ldflags -fsanitize=address
3051     ;;
3052     clang-tsan)
3053         cc_default="clang"
3054         add_cflags  -fsanitize=thread -pie
3055         add_ldflags -fsanitize=thread -pie
3056     ;;
3057     clang-usan)
3058         cc_default="clang"
3059         add_cflags  -fsanitize=undefined
3060         add_ldflags -fsanitize=undefined
3061     ;;
3062     gcc-asan)
3063         cc_default="gcc"
3064         add_cflags  -fsanitize=address
3065         add_ldflags -fsanitize=address
3066     ;;
3067     gcc-tsan)
3068         cc_default="gcc"
3069         add_cflags  -fsanitize=thread -pie -fPIC
3070         add_ldflags -fsanitize=thread -pie -fPIC
3071     ;;
3072     gcc-usan)
3073         cc_default="gcc"
3074         add_cflags  -fsanitize=undefined
3075         add_ldflags -fsanitize=undefined
3076     ;;
3077     valgrind-massif)
3078         target_exec_default=${valgrind:-"valgrind"}
3079         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"
3080     ;;
3081     valgrind-memcheck)
3082         target_exec_default=${valgrind:-"valgrind"}
3083         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3084     ;;
3085     msvc)
3086         # Check whether the current MSVC version needs the C99 converter.
3087         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3088         # support enough of C99 to build ffmpeg. Default to the new
3089         # behaviour if the regexp was unable to match anything, since this
3090         # successfully parses the version number of existing supported
3091         # versions that require the converter (MSVC 2010 and 2012).
3092         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3093         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3094             cc_default="cl"
3095         else
3096             cc_default="c99wrap cl"
3097         fi
3098         ld_default="link"
3099         nm_default="dumpbin -symbols"
3100         ar_default="lib"
3101         target_os_default="win32"
3102         # Use a relative path for TMPDIR. This makes sure all the
3103         # ffconf temp files are written with a relative path, avoiding
3104         # issues with msys/win32 path conversion for MSVC parameters
3105         # such as -Fo<file> or -out:<file>.
3106         TMPDIR=.
3107     ;;
3108     icl)
3109         cc_default="icl"
3110         ld_default="xilink"
3111         nm_default="dumpbin -symbols"
3112         ar_default="xilib"
3113         target_os_default="win32"
3114         TMPDIR=.
3115     ;;
3116     gcov)
3117         add_cflags  -fprofile-arcs -ftest-coverage
3118         add_ldflags -fprofile-arcs -ftest-coverage
3119     ;;
3120     hardened)
3121         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3122         add_cflags   -fno-strict-overflow -fstack-protector-all
3123         add_ldflags  -Wl,-z,relro -Wl,-z,now
3124     ;;
3125     ?*)
3126         die "Unknown toolchain $toolchain"
3127     ;;
3128 esac
3129
3130 test -n "$cross_prefix" && enable cross_compile
3131
3132 if enabled cross_compile; then
3133     test -n "$arch" && test -n "$target_os" ||
3134         die "Must specify target arch and OS when cross-compiling"
3135 fi
3136
3137 ar_default="${cross_prefix}${ar_default}"
3138 cc_default="${cross_prefix}${cc_default}"
3139 cxx_default="${cross_prefix}${cxx_default}"
3140 nm_default="${cross_prefix}${nm_default}"
3141 pkg_config_default="${cross_prefix}${pkg_config_default}"
3142 ranlib_default="${cross_prefix}${ranlib_default}"
3143 strip_default="${cross_prefix}${strip_default}"
3144 windres_default="${cross_prefix}${windres_default}"
3145
3146 sysinclude_default="${sysroot}/usr/include"
3147
3148 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3149     target_exec target_os yasmexe
3150 enabled cross_compile || host_cc_default=$cc
3151 set_default host_cc
3152
3153 pkg_config_fail_message=""
3154 if ! $pkg_config --version >/dev/null 2>&1; then
3155     warn "$pkg_config not found, library detection may fail."
3156     pkg_config=false
3157 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3158     pkg_config_fail_message="
3159 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3160 fi
3161
3162 if test $doxygen != $doxygen_default && \
3163   ! $doxygen --version >/dev/null 2>&1; then
3164     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3165 fi
3166
3167 exesuf() {
3168     case $1 in
3169         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3170     esac
3171 }
3172
3173 EXESUF=$(exesuf $target_os)
3174 HOSTEXESUF=$(exesuf $host_os)
3175
3176 # set temporary file name
3177 : ${TMPDIR:=$TEMPDIR}
3178 : ${TMPDIR:=$TMP}
3179 : ${TMPDIR:=/tmp}
3180
3181 if [ -n "$tempprefix" ] ; then
3182     mktemp(){
3183         echo $tempprefix.${HOSTNAME}.${UID}
3184     }
3185 elif ! check_cmd mktemp -u XXXXXX; then
3186     # simple replacement for missing mktemp
3187     # NOT SAFE FOR GENERAL USE
3188     mktemp(){
3189         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3190     }
3191 fi
3192
3193 tmpfile(){
3194     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3195         (set -C; exec > $tmp) 2>/dev/null ||
3196         die "Unable to create temporary file in $TMPDIR."
3197     append TMPFILES $tmp
3198     eval $1=$tmp
3199 }
3200
3201 trap 'rm -f -- $TMPFILES' EXIT
3202
3203 tmpfile TMPASM .asm
3204 tmpfile TMPC   .c
3205 tmpfile TMPCPP .cpp
3206 tmpfile TMPE   $EXESUF
3207 tmpfile TMPH   .h
3208 tmpfile TMPM   .m
3209 tmpfile TMPO   .o
3210 tmpfile TMPS   .S
3211 tmpfile TMPSH  .sh
3212 tmpfile TMPV   .ver
3213
3214 unset -f mktemp
3215
3216 chmod +x $TMPE
3217
3218 # make sure we can execute files in $TMPDIR
3219 cat > $TMPSH 2>> $logfile <<EOF
3220 #! /bin/sh
3221 EOF
3222 chmod +x $TMPSH >> $logfile 2>&1
3223 if ! $TMPSH >> $logfile 2>&1; then
3224     cat <<EOF
3225 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3226 variable to another directory and make sure that it is not mounted noexec.
3227 EOF
3228     die "Sanity test failed."
3229 fi
3230
3231 armasm_flags(){
3232     for flag; do
3233         case $flag in
3234             # Filter out MSVC cl.exe options from cflags that shouldn't
3235             # be passed to gas-preprocessor
3236             -M[TD]*)                                            ;;
3237             *)                  echo $flag                      ;;
3238         esac
3239    done
3240 }
3241
3242 ccc_flags(){
3243     for flag; do
3244         case $flag in
3245             -std=c99)           echo -c99                       ;;
3246             -mcpu=*)            echo -arch ${flag#*=}           ;;
3247             -mieee)             echo -ieee                      ;;
3248             -O*|-fast)          echo $flag                      ;;
3249             -fno-math-errno)    echo -assume nomath_errno       ;;
3250             -g)                 echo -g3                        ;;
3251             -Wall)              echo -msg_enable level2         ;;
3252             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3253             -Wl,*)              echo $flag                      ;;
3254             -f*|-W*)                                            ;;
3255             *)                  echo $flag                      ;;
3256         esac
3257    done
3258 }
3259
3260 cparser_flags(){
3261     for flag; do
3262         case $flag in
3263             -Wno-switch)             echo -Wno-switch-enum ;;
3264             -Wno-format-zero-length) ;;
3265             -Wdisabled-optimization) ;;
3266             -Wno-pointer-sign)       echo -Wno-other ;;
3267             *)                       echo $flag ;;
3268         esac
3269     done
3270 }
3271
3272 msvc_common_flags(){
3273     for flag; do
3274         case $flag in
3275             # In addition to specifying certain flags under the compiler
3276             # specific filters, they must be specified here as well or else the
3277             # generic catch all at the bottom will print the original flag.
3278             -Wall)                ;;
3279             -std=c99)             ;;
3280             # Common flags
3281             -fomit-frame-pointer) ;;
3282             -g)                   echo -Z7 ;;
3283             -fno-math-errno)      ;;
3284             -fno-common)          ;;
3285             -fno-signed-zeros)    ;;
3286             -fPIC)                ;;
3287             -mthumb)              ;;
3288             -march=*)             ;;
3289             -lz)                  echo zlib.lib ;;
3290             -lavifil32)           echo vfw32.lib ;;
3291             -lavicap32)           echo vfw32.lib user32.lib ;;
3292             -l*)                  echo ${flag#-l}.lib ;;
3293             -L*)                  echo -libpath:${flag#-L} ;;
3294             *)                    echo $flag ;;
3295         esac
3296     done
3297 }
3298
3299 msvc_flags(){
3300     msvc_common_flags "$@"
3301     for flag; do
3302         case $flag in
3303             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3304                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3305                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3306                                        -wd4307 \
3307                                        -wd4273 -wd4554 -wd4701 ;;
3308         esac
3309     done
3310 }
3311
3312 icl_flags(){
3313     msvc_common_flags "$@"
3314     for flag; do
3315         case $flag in
3316             # Despite what Intel's documentation says -Wall, which is supported
3317             # on Windows, does enable remarks so disable them here.
3318             -Wall)                echo $flag -Qdiag-disable:remark ;;
3319             -std=c99)             echo -Qstd=c99 ;;
3320             -flto)                echo -ipo ;;
3321         esac
3322     done
3323 }
3324
3325 icc_flags(){
3326     for flag; do
3327         case $flag in
3328             -flto)                echo -ipo ;;
3329             *)                    echo $flag ;;
3330         esac
3331     done
3332 }
3333
3334 pgi_flags(){
3335     for flag; do
3336         case $flag in
3337             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3338             -fomit-frame-pointer) echo -Mnoframe ;;
3339             -g)                   echo -gopt ;;
3340             *)                    echo $flag ;;
3341         esac
3342     done
3343 }
3344
3345 suncc_flags(){
3346     for flag; do
3347         case $flag in
3348             -march=*|-mcpu=*)
3349                 case "${flag#*=}" in
3350                     native)                   echo -xtarget=native       ;;
3351                     v9|niagara)               echo -xarch=sparc          ;;
3352                     ultrasparc)               echo -xarch=sparcvis       ;;
3353                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3354                     i586|pentium)             echo -xchip=pentium        ;;
3355                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3356                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3357                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3358                     pentium4*)          echo -xtarget=pentium4           ;;
3359                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3360                     *-sse3)             echo -xarch=sse3                 ;;
3361                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3362                     bonnell)                   echo -xarch=ssse3         ;;
3363                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3364                     westmere)                  echo -xtarget=westmere    ;;
3365                     silvermont)                echo -xarch=sse4_2        ;;
3366                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3367                     core-avx*|ivybridge|haswell|broadwell)
3368                                                echo -xarch=avx           ;;
3369                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3370                     btver1)                    echo -xarch=amdsse4a      ;;
3371                     btver2|bdver*)             echo -xarch=avx           ;;
3372                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3373                     k8|opteron|athlon64|athlon-fx)
3374                                                echo -xarch=sse2a         ;;
3375                     athlon*)                   echo -xarch=pentium_proa  ;;
3376                 esac
3377                 ;;
3378             -std=c99)             echo -xc99              ;;
3379             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3380             -fPIC)                echo -KPIC -xcode=pic32 ;;
3381             -W*,*)                echo $flag              ;;
3382             -f*-*|-W*|-mimpure-text)                      ;;
3383             -shared)              echo -G                 ;;
3384             *)                    echo $flag              ;;
3385         esac
3386     done
3387 }
3388
3389 tms470_flags(){
3390     for flag; do
3391         case $flag in
3392             -march=*|-mcpu=*)
3393                 case "${flag#*=}" in
3394                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3395                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3396                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3397                     armv6*|arm11*)          echo -mv=6   ;;
3398                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3399                                             echo -mv=5e  ;;
3400                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3401                 esac
3402                 ;;
3403             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3404             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3405             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3406             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3407             -msoft-float)   echo --float_support=vfplib       ;;
3408             -O[0-3]|-mf=*)  echo $flag                        ;;
3409             -g)             echo -g -mn                       ;;
3410             -pds=*)         echo $flag                        ;;
3411             -D*|-I*)        echo $flag                        ;;
3412             --gcc|--abi=*)  echo $flag                        ;;
3413             -me)            echo $flag                        ;;
3414         esac
3415     done
3416 }
3417
3418 probe_cc(){
3419     pfx=$1
3420     _cc=$2
3421
3422     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3423     unset _ld_o _ldflags _ld_lib _ld_path
3424     unset _depflags _DEPCMD _DEPFLAGS
3425     _flags_filter=echo
3426
3427     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3428         true # no-op to avoid reading stdin in following checks
3429     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3430         _type=llvm_gcc
3431         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3432         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3433         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3434         _cflags_speed='-O3'
3435         _cflags_size='-Os'
3436     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3437         _type=gcc
3438         gcc_version=$($_cc --version | head -n1)
3439         gcc_basever=$($_cc -dumpversion)
3440         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3441         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3442         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3443         if ! $_cc -dumpversion | grep -q '^2\.'; then
3444             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3445         fi
3446         _cflags_speed='-O3'
3447         _cflags_size='-Os'
3448     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3449         _type=icc
3450         _ident=$($_cc --version | head -n1)
3451         _depflags='-MMD'
3452         _cflags_speed='-O3'
3453         _cflags_size='-Os'
3454         _cflags_noopt='-O1'
3455         _flags_filter=icc_flags
3456     elif $_cc -v 2>&1 | grep -q xlc; then
3457         _type=xlc
3458         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3459         _cflags_speed='-O5'
3460         _cflags_size='-O5 -qcompact'
3461     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3462         _type=ccc
3463         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3464         _DEPFLAGS='-M'
3465         _cflags_speed='-fast'
3466         _cflags_size='-O1'
3467         _flags_filter=ccc_flags
3468     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3469         test -d "$sysroot" || die "No valid sysroot specified."
3470         _type=armcc
3471         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3472         armcc_conf="$PWD/armcc.conf"
3473         $_cc --arm_linux_configure                 \
3474              --arm_linux_config_file="$armcc_conf" \
3475              --configure_sysroot="$sysroot"        \
3476              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3477              die "Error creating armcc configuration file."
3478         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3479         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3480         as_default="${cross_prefix}gcc"
3481         _depflags='-MMD'
3482         _cflags_speed='-O3'
3483         _cflags_size='-Os'
3484     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3485         _type=tms470
3486         _ident=$($_cc -version | head -n1 | tr -s ' ')
3487         _flags='--gcc --abi=eabi -me'
3488         _cc_e='-ppl -fe=$@'
3489         _cc_o='-fe=$@'
3490         _depflags='-ppa -ppd=$(@:.o=.d)'
3491         _cflags_speed='-O3 -mf=5'
3492         _cflags_size='-O3 -mf=2'
3493         _flags_filter=tms470_flags
3494     elif $_cc -v 2>&1 | grep -q clang; then
3495         _type=clang
3496         _ident=$($_cc --version | head -n1)
3497         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3498         _cflags_speed='-O3'
3499         _cflags_size='-Os'
3500     elif $_cc -V 2>&1 | grep -q Sun; then
3501         _type=suncc
3502         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3503         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3504         _DEPFLAGS='-xM1 -xc99'
3505         _ldflags='-std=c99'
3506         _cflags_speed='-O5'
3507         _cflags_size='-O5 -xspace'
3508         _flags_filter=suncc_flags
3509     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3510         _type=pathscale
3511         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3512         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3513         _cflags_speed='-O2'
3514         _cflags_size='-Os'
3515         _flags_filter='filter_out -Wdisabled-optimization'
3516     elif $_cc -v 2>&1 | grep -q Open64; then
3517         _type=open64
3518         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3519         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3520         _cflags_speed='-O2'
3521         _cflags_size='-Os'
3522         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3523     elif $_cc -V 2>&1 | grep -q Portland; then
3524         _type=pgi
3525         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3526         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3527         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3528         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3529         _cflags_noopt="-O"
3530         _flags_filter=pgi_flags
3531     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3532         _type=armasm
3533         _ident=$($_cc | head -n1)
3534         # 4509: "This form of conditional instruction is deprecated"
3535         _flags="-nologo -ignore 4509"
3536         _flags_filter=armasm_flags
3537     elif $_cc 2>&1 | grep -q Intel; then
3538         _type=icl
3539         _ident=$($cc 2>&1 | head -n1)
3540         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3541         # Not only is O3 broken on 13.x+ but it is slower on all previous
3542         # versions (tested) as well.
3543         _cflags_speed="-O2"
3544         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3545         if $_cc 2>&1 | grep -q Linker; then
3546             _ld_o='-out:$@'
3547         else
3548             _ld_o='-Fe$@'
3549         fi
3550         _cc_o='-Fo$@'
3551         _cc_e='-P'
3552         _flags_filter=icl_flags
3553         _ld_lib='lib%.a'
3554         _ld_path='-libpath:'
3555         # -Qdiag-error to make icl error when seeing certain unknown arguments
3556         _flags='-nologo -Qdiag-error:4044,10157'
3557         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3558         # with MSVC which enables it by default.
3559         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3560         if [ $pfx = hostcc ]; then
3561             append _cflags -Dsnprintf=_snprintf
3562         fi
3563         disable stripping
3564     elif $_cc 2>&1 | grep -q Microsoft; then
3565         _type=msvc
3566         _ident=$($cc 2>&1 | head -n1)
3567         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3568         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3569         _cflags_speed="-O2"
3570         _cflags_size="-O1"
3571         if $_cc 2>&1 | grep -q Linker; then
3572             _ld_o='-out:$@'
3573         else
3574             _ld_o='-Fe$@'
3575         fi
3576         _cc_o='-Fo$@'
3577         _cc_e='-P -Fi$@'
3578         _flags_filter=msvc_flags
3579         _ld_lib='lib%.a'
3580         _ld_path='-libpath:'
3581         _flags='-nologo'
3582         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3583         if [ $pfx = hostcc ]; then
3584             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3585                 append _cflags -Dsnprintf=_snprintf
3586             fi
3587         fi
3588         disable stripping
3589     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3590         _type=cparser
3591         _ident=$($_cc --version | head -n1)
3592         _depflags='-MMD'
3593         _cflags_speed='-O4'
3594         _cflags_size='-O2'
3595         _flags_filter=cparser_flags
3596     fi
3597
3598     eval ${pfx}_type=\$_type
3599     eval ${pfx}_ident=\$_ident
3600 }
3601
3602 set_ccvars(){
3603     eval ${1}_C=\${_cc_c-\${${1}_C}}
3604     eval ${1}_E=\${_cc_e-\${${1}_E}}
3605     eval ${1}_O=\${_cc_o-\${${1}_O}}
3606
3607     if [ -n "$_depflags" ]; then
3608         eval ${1}_DEPFLAGS=\$_depflags
3609     else
3610         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3611         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3612         eval DEP${1}FLAGS=\$_flags
3613     fi
3614 }
3615
3616 probe_cc cc "$cc"
3617 cflags_filter=$_flags_filter
3618 cflags_speed=$_cflags_speed
3619 cflags_size=$_cflags_size
3620 cflags_noopt=$_cflags_noopt
3621 add_cflags $_flags $_cflags
3622 cc_ldflags=$_ldflags
3623 set_ccvars CC
3624
3625 probe_cc hostcc "$host_cc"
3626 host_cflags_filter=$_flags_filter
3627 add_host_cflags  $_flags $_cflags
3628 set_ccvars HOSTCC
3629
3630 test -n "$cc_type" && enable $cc_type ||
3631     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3632
3633 : ${as_default:=$cc}
3634 : ${dep_cc_default:=$cc}
3635 : ${ld_default:=$cc}
3636 : ${host_ld_default:=$host_cc}
3637 set_default ar as dep_cc ld host_ld windres
3638
3639 probe_cc as "$as"
3640 asflags_filter=$_flags_filter
3641 add_asflags $_flags $_cflags
3642 set_ccvars AS
3643
3644 probe_cc ld "$ld"
3645 ldflags_filter=$_flags_filter
3646 add_ldflags $_flags $_ldflags
3647 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3648 LD_O=${_ld_o-$LD_O}
3649 LD_LIB=${_ld_lib-$LD_LIB}
3650 LD_PATH=${_ld_path-$LD_PATH}
3651
3652 probe_cc hostld "$host_ld"
3653 host_ldflags_filter=$_flags_filter
3654 add_host_ldflags $_flags $_ldflags
3655 HOSTLD_O=${_ld_o-$HOSTLD_O}
3656
3657 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3658     probe_cc depcc "$dep_cc"
3659     CCDEP=${_DEPCMD:-$DEPCMD}
3660     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3661     DEPCCFLAGS=$_flags
3662 fi
3663
3664 if $ar 2>&1 | grep -q Microsoft; then
3665     arflags="-nologo"
3666     ar_o='-out:$@'
3667 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3668     arflags="rq"
3669     ar_o='$@'
3670 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3671     arflags='-Xany -r -c'
3672     ar_o='$@'
3673 elif $ar 2>&1 | grep -q "\[D\] "; then
3674     arflags="rcD"
3675     ar_o='$@'
3676 else
3677     arflags="rc"
3678     ar_o='$@'
3679 fi
3680
3681 add_cflags $extra_cflags
3682 add_cxxflags $extra_cxxflags
3683 add_asflags $extra_cflags
3684
3685 if test -n "$sysroot"; then
3686     case "$cc_type" in
3687         gcc|llvm_gcc|clang)
3688             add_cppflags --sysroot="$sysroot"
3689             add_ldflags --sysroot="$sysroot"
3690 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3691             add_cppflags -isysroot "$sysroot"
3692             add_ldflags -isysroot "$sysroot"
3693         ;;
3694         tms470)
3695             add_cppflags -I"$sysinclude"
3696             add_ldflags  --sysroot="$sysroot"
3697         ;;
3698     esac
3699 fi
3700
3701 if test "$cpu" = host; then
3702     enabled cross_compile &&
3703         die "--cpu=host makes no sense when cross-compiling."
3704
3705     case "$cc_type" in
3706         gcc|llvm_gcc)
3707             check_native(){
3708                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3709                 sed -n "/cc1.*$1=/{
3710                             s/.*$1=\\([^ ]*\\).*/\\1/
3711                             p
3712                             q
3713                         }" $TMPE
3714             }
3715             cpu=$(check_native -march || check_native -mcpu)
3716         ;;
3717     esac
3718
3719     test "${cpu:-host}" = host &&
3720         die "--cpu=host not supported with compiler $cc"
3721 fi
3722
3723 # Deal with common $arch aliases
3724 case "$arch" in
3725     aarch64|arm64)
3726         arch="aarch64"
3727     ;;
3728     arm*|iPad*|iPhone*)
3729         arch="arm"
3730     ;;
3731     mips*|IP*)
3732         arch="mips"
3733     ;;
3734     parisc*|hppa*)
3735         arch="parisc"
3736     ;;
3737     "Power Macintosh"|ppc*|powerpc*)
3738         arch="ppc"
3739     ;;
3740     s390|s390x)
3741         arch="s390"
3742     ;;
3743     sh4|sh)
3744         arch="sh4"
3745     ;;
3746     sun4u|sparc*)
3747         arch="sparc"
3748     ;;
3749     tilegx|tile-gx)
3750         arch="tilegx"
3751     ;;
3752     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3753         arch="x86"
3754     ;;
3755 esac
3756
3757 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3758 enable $arch
3759
3760 # Add processor-specific flags
3761 if enabled aarch64; then
3762
3763     case $cpu in
3764         armv*)
3765             cpuflags="-march=$cpu"
3766         ;;
3767         *)
3768             cpuflags="-mcpu=$cpu"
3769         ;;
3770     esac
3771
3772 elif enabled alpha; then
3773
3774     cpuflags="-mcpu=$cpu"
3775
3776 elif enabled arm; then
3777
3778     check_arm_arch() {
3779         check_cpp_condition stddef.h \
3780             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3781             $cpuflags
3782     }
3783
3784     probe_arm_arch() {
3785         if   check_arm_arch 4;        then echo armv4;
3786         elif check_arm_arch 4T;       then echo armv4t;
3787         elif check_arm_arch 5;        then echo armv5;
3788         elif check_arm_arch 5E;       then echo armv5e;
3789         elif check_arm_arch 5T;       then echo armv5t;
3790         elif check_arm_arch 5TE;      then echo armv5te;
3791         elif check_arm_arch 5TEJ;     then echo armv5te;
3792         elif check_arm_arch 6;        then echo armv6;
3793         elif check_arm_arch 6J;       then echo armv6j;
3794         elif check_arm_arch 6K;       then echo armv6k;
3795         elif check_arm_arch 6Z;       then echo armv6z;
3796         elif check_arm_arch 6ZK;      then echo armv6zk;
3797         elif check_arm_arch 6T2;      then echo armv6t2;
3798         elif check_arm_arch 7;        then echo armv7;
3799         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3800         elif check_arm_arch 7S;       then echo armv7-a;
3801         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3802         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3803         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3804         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3805         fi
3806     }
3807
3808     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3809
3810     case $cpu in
3811         armv*)
3812             cpuflags="-march=$cpu"
3813             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3814         ;;
3815         *)
3816             cpuflags="-mcpu=$cpu"
3817             case $cpu in
3818                 cortex-a*)                               subarch=armv7a  ;;
3819                 cortex-r*)                               subarch=armv7r  ;;
3820                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3821                 arm11*)                                  subarch=armv6   ;;
3822                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3823                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3824                 *)                             subarch=$(probe_arm_arch) ;;
3825             esac
3826         ;;
3827     esac
3828
3829     case "$subarch" in
3830         armv5t*)    enable fast_clz                ;;
3831         armv[6-8]*)
3832             enable fast_clz
3833             disabled fast_unaligned || enable fast_unaligned
3834             ;;
3835     esac
3836
3837 elif enabled avr32; then
3838
3839     case $cpu in
3840         ap7[02]0[0-2])
3841             subarch="avr32_ap"
3842             cpuflags="-mpart=$cpu"
3843         ;;
3844         ap)
3845             subarch="avr32_ap"
3846             cpuflags="-march=$cpu"
3847         ;;
3848         uc3[ab]*)
3849             subarch="avr32_uc"
3850             cpuflags="-mcpu=$cpu"
3851         ;;
3852         uc)
3853             subarch="avr32_uc"
3854             cpuflags="-march=$cpu"
3855         ;;
3856     esac
3857
3858 elif enabled bfin; then
3859
3860     cpuflags="-mcpu=$cpu"
3861
3862 elif enabled mips; then
3863
3864     cpuflags="-march=$cpu"
3865
3866     case $cpu in
3867         24kc)
3868             disable mips32r5
3869             disable mips64r6
3870             disable mipsfpu
3871             disable mipsdspr1
3872             disable mipsdspr2
3873             disable msa
3874         ;;
3875         24kf*)
3876             disable mips32r5
3877             disable mips64r6
3878             disable mipsdspr1
3879             disable mipsdspr2
3880             disable msa
3881         ;;
3882         24kec|34kc|1004kc)
3883             disable mips32r5
3884             disable mips64r6
3885             disable mipsfpu
3886             disable mipsdspr2
3887             disable msa
3888         ;;
3889         24kef*|34kf*|1004kf*)
3890             disable mips32r5
3891             disable mips64r6
3892             disable mipsdspr2
3893             disable msa
3894         ;;
3895         74kc)
3896             disable mips32r5
3897             disable mips64r6
3898             disable mipsfpu
3899             disable msa
3900         ;;
3901         74kf)
3902             disable mips32r5
3903             disable mips64r6
3904             disable msa
3905         ;;
3906         p5600)
3907             disable mips64r6
3908             disable mipsdspr1
3909             disable mipsdspr2
3910
3911             check_cflags "-mtune=p5600"
3912         ;;
3913         i6400)
3914             disable mips32r5
3915             disable mipsdspr1
3916             disable mipsdspr2
3917             disable mipsfpu
3918
3919             check_cflags "-mtune=i6400 -mabi=64"
3920             check_ldflags "-mabi=64"
3921         ;;
3922         loongson3*)
3923             enable mipsfpu
3924             disable mips32r2
3925             disable mips32r5
3926             disable mips64r6
3927             disable mipsdspr1
3928             disable mipsdspr2
3929             disable msa
3930             enable local_aligned_8 local_aligned_16
3931             enable simd_align_16
3932             enable fast_64bit
3933             enable fast_clz
3934             enable fast_cmov
3935             enable fast_unaligned
3936             disable aligned_stack
3937             cpuflags="-march=$cpu"
3938         ;;
3939         generic)
3940             disable mips32r5
3941             disable mips64r6
3942             disable msa
3943         ;;
3944     esac
3945
3946 elif enabled ppc; then
3947
3948     disable ldbrx
3949     disable vsx
3950
3951     case $(tolower $cpu) in
3952         601|ppc601|powerpc601)
3953             cpuflags="-mcpu=601"
3954             disable altivec
3955         ;;
3956         603*|ppc603*|powerpc603*)
3957             cpuflags="-mcpu=603"
3958             disable altivec
3959         ;;
3960         604*|ppc604*|powerpc604*)
3961             cpuflags="-mcpu=604"
3962             disable altivec
3963         ;;
3964         g3|75*|ppc75*|powerpc75*)
3965             cpuflags="-mcpu=750"
3966             disable altivec
3967         ;;
3968         g4|745*|ppc745*|powerpc745*)
3969             cpuflags="-mcpu=7450"
3970         ;;
3971         74*|ppc74*|powerpc74*)
3972             cpuflags="-mcpu=7400"
3973         ;;
3974         g5|970|ppc970|powerpc970)
3975             cpuflags="-mcpu=970"
3976         ;;
3977         power[3-8]*)
3978             cpuflags="-mcpu=$cpu"
3979         ;;
3980         cell)
3981             cpuflags="-mcpu=cell"
3982             enable ldbrx
3983         ;;
3984         e500mc)
3985             cpuflags="-mcpu=e500mc"
3986             disable altivec
3987         ;;
3988         e500v2)
3989             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3990             disable altivec
3991             disable dcbzl
3992         ;;
3993         e500)
3994             cpuflags="-mcpu=8540 -mhard-float"
3995             disable altivec
3996             disable dcbzl
3997         ;;
3998     esac
3999
4000 elif enabled sparc; then
4001
4002     case $cpu in
4003         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4004             cpuflags="-mcpu=$cpu"
4005         ;;
4006         ultrasparc*|niagara[234])
4007             cpuflags="-mcpu=$cpu"
4008         ;;
4009     esac
4010
4011 elif enabled x86; then
4012
4013     case $cpu in
4014         i[345]86|pentium)
4015             cpuflags="-march=$cpu"
4016             disable i686
4017             disable mmx
4018         ;;
4019         # targets that do NOT support nopl and conditional mov (cmov)
4020         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4021             cpuflags="-march=$cpu"
4022             disable i686
4023         ;;
4024         # targets that do support nopl and conditional mov (cmov)
4025         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4026         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4027             cpuflags="-march=$cpu"
4028             enable i686
4029             enable fast_cmov
4030         ;;
4031         # targets that do support conditional mov but on which it's slow
4032         pentium4|pentium4m|prescott|nocona)
4033             cpuflags="-march=$cpu"
4034             enable i686
4035             disable fast_cmov
4036         ;;
4037     esac
4038
4039 fi
4040
4041 if [ "$cpu" != generic ]; then
4042     add_cflags  $cpuflags
4043     add_asflags $cpuflags
4044 fi
4045
4046 # compiler sanity check
4047 check_exec <<EOF
4048 int main(void){ return 0; }
4049 EOF
4050 if test "$?" != 0; then
4051     echo "$cc is unable to create an executable file."
4052     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4053         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4054         echo "Only do this if you know what cross compiling means."
4055     fi
4056     die "C compiler test failed."
4057 fi
4058
4059 add_cppflags -D_ISOC99_SOURCE
4060 add_cxxflags -D__STDC_CONSTANT_MACROS
4061 check_cflags -std=c99
4062 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4063 #include <stdlib.h>
4064 EOF
4065 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4066 #include <stdlib.h>
4067 EOF
4068
4069 add_host_cppflags -D_ISOC99_SOURCE
4070 check_host_cflags -std=c99
4071 check_host_cflags -Wall
4072 check_host_cflags -O3
4073
4074 check_64bit(){
4075     arch32=$1
4076     arch64=$2
4077     expr=$3
4078     check_code cc "" "int test[2*($expr) - 1]" &&
4079         subarch=$arch64 || subarch=$arch32
4080 }
4081
4082 case "$arch" in
4083     aarch64|alpha|ia64)
4084         spic=$shared
4085     ;;
4086     mips)
4087         check_64bit mips mips64 '_MIPS_SIM > 1'
4088         spic=$shared
4089     ;;
4090     parisc)
4091         check_64bit parisc parisc64 'sizeof(void *) > 4'
4092         spic=$shared
4093     ;;
4094     ppc)
4095         check_64bit ppc ppc64 'sizeof(void *) > 4'
4096         spic=$shared
4097     ;;
4098     s390)
4099         check_64bit s390 s390x 'sizeof(void *) > 4'
4100         spic=$shared
4101     ;;
4102     sparc)
4103         check_64bit sparc sparc64 'sizeof(void *) > 4'
4104         spic=$shared
4105     ;;
4106     x86)
4107         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4108         # Treat x32 as x64 for now. Note it also needs spic=$shared
4109         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4110             subarch=x86_64
4111         if test "$subarch" = "x86_64"; then
4112             spic=$shared
4113         fi
4114     ;;
4115     ppc)
4116         check_cc <<EOF && subarch="ppc64"
4117         int test[(int)sizeof(char*) - 7];
4118 EOF
4119     ;;
4120 esac
4121
4122 enable $subarch
4123 enabled spic && enable_weak pic
4124
4125 # OS specific
4126 case $target_os in
4127     aix)
4128         SHFLAGS=-shared
4129         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4130         enabled shared && add_ldflags -Wl,-brtl
4131         ;;
4132     android)
4133         disable symver
4134         enable section_data_rel_ro
4135         SLIB_INSTALL_NAME='$(SLIBNAME)'
4136         SLIB_INSTALL_LINKS=
4137         # soname not set on purpose
4138         SHFLAGS=-shared
4139         ;;
4140     haiku)
4141         prefix_default="/boot/common"
4142         network_extralibs="-lnetwork"
4143         host_libs=
4144         ;;
4145     sunos)
4146         SHFLAGS='-shared -Wl,-h,$$(@F)'
4147         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4148         network_extralibs="-lsocket -lnsl"
4149         add_cppflags -D__EXTENSIONS__
4150         # When using suncc to build, the Solaris linker will mark
4151         # an executable with each instruction set encountered by
4152         # the Solaris assembler.  As our libraries contain their own
4153         # guards for processor-specific code, instead suppress
4154         # generation of the HWCAPS ELF section on Solaris x86 only.
4155         enabled_all suncc x86 &&
4156             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4157             add_ldflags -Wl,-M,mapfile
4158         nm_default='nm -P -g'
4159         ;;
4160     netbsd)
4161         disable symver
4162         oss_indev_extralibs="-lossaudio"
4163         oss_outdev_extralibs="-lossaudio"
4164         enabled gcc || check_ldflags -Wl,-zmuldefs
4165         ;;
4166     openbsd|bitrig)
4167         disable symver
4168         SHFLAGS='-shared'
4169         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4170         SLIB_INSTALL_LINKS=
4171         oss_indev_extralibs="-lossaudio"
4172         oss_outdev_extralibs="-lossaudio"
4173         ;;
4174     dragonfly)
4175         disable symver
4176         ;;
4177     freebsd)
4178         ;;
4179     bsd/os)
4180         add_extralibs -lpoll -lgnugetopt
4181         strip="strip -d"
4182         ;;
4183     darwin)
4184         enabled ppc && add_asflags -force_cpusubtype_ALL
4185         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4186         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4187         strip="${strip} -x"
4188         add_ldflags -Wl,-dynamic,-search_paths_first
4189         SLIBSUF=".dylib"
4190         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4191         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4192         objformat="macho"
4193         enabled x86_64 && objformat="macho64"
4194         enabled_any pic shared x86_64 ||
4195             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4196         ;;
4197     mingw32*)
4198         if test $target_os = "mingw32ce"; then
4199             disable network
4200         else
4201             target_os=mingw32
4202         fi
4203         LIBTARGET=i386
4204         if enabled x86_64; then
4205             LIBTARGET="i386:x86-64"
4206         elif enabled arm; then
4207             LIBTARGET=arm-wince
4208         fi
4209         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4210         check_ldflags -Wl,--nxcompat
4211         check_ldflags -Wl,--dynamicbase
4212         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4213         shlibdir_default="$bindir_default"
4214         SLIBPREF=""
4215         SLIBSUF=".dll"
4216         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4217         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4218         dlltool="${cross_prefix}dlltool"
4219         if check_cmd lib.exe -list; then
4220             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4221             if enabled x86_64; then
4222                 LIBTARGET=x64
4223             fi
4224         elif check_cmd $dlltool --version; then
4225             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4226         fi
4227         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4228         SLIB_INSTALL_LINKS=
4229         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4230         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4231         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4232         objformat="win32"
4233         ranlib=:
4234         enable dos_paths
4235         ;;
4236     win32|win64)
4237         disable symver
4238         if enabled shared; then
4239             # Link to the import library instead of the normal static library
4240             # for shared libs.
4241             LD_LIB='%.lib'
4242             # Cannot build both shared and static libs with MSVC or icl.
4243             disable static
4244         fi
4245         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4246         shlibdir_default="$bindir_default"
4247         SLIBPREF=""
4248         SLIBSUF=".dll"
4249         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4250         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4251         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4252         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4253         SLIB_INSTALL_LINKS=
4254         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4255         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4256         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4257         objformat="win32"
4258         ranlib=:
4259         enable dos_paths
4260         ;;
4261     cygwin*)
4262         target_os=cygwin
4263         shlibdir_default="$bindir_default"
4264         SLIBPREF="cyg"
4265         SLIBSUF=".dll"
4266         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4267         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4268         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4269         SLIB_INSTALL_LINKS=
4270         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4271         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4272         objformat="win32"
4273         enable dos_paths
4274         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4275         ;;
4276     *-dos|freedos|opendos)
4277         network_extralibs="-lsocket"
4278         objformat="coff"
4279         enable dos_paths
4280         add_cppflags -U__STRICT_ANSI__
4281         ;;
4282     linux)
4283         enable dv1394
4284         enable section_data_rel_ro
4285         ;;
4286     irix*)
4287         target_os=irix
4288         ranlib="echo ignoring ranlib"
4289         ;;
4290     os/2*)
4291         strip="lxlite -CS"
4292         ln_s="cp -f"
4293         objformat="aout"
4294         add_cppflags -D_GNU_SOURCE
4295         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4296         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4297         LIBSUF="_s.a"
4298         SLIBPREF=""
4299         SLIBSUF=".dll"
4300         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4301         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4302         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4303             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4304             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4305             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4306             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4307             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4308         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4309             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4310         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4311         enable dos_paths
4312         enable_weak os2threads
4313         ;;
4314     gnu/kfreebsd)
4315         add_cppflags -D_BSD_SOURCE
4316         ;;
4317     gnu)
4318         ;;
4319     qnx)
4320         add_cppflags -D_QNX_SOURCE
4321         network_extralibs="-lsocket"
4322         ;;
4323     symbian)
4324         SLIBSUF=".dll"
4325         enable dos_paths
4326         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4327         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4328         add_ldflags -Wl,--target1-abs,--no-undefined \
4329                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4330                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4331         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4332                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4333                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4334         ;;
4335     osf1)
4336         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4337         ;;
4338     minix)
4339         ;;
4340     plan9)
4341         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4342                      -D_REENTRANT_SOURCE        \
4343                      -D_RESEARCH_SOURCE         \
4344                      -DFD_SETSIZE=96            \
4345                      -DHAVE_SOCK_OPTS
4346         add_compat strtod.o strtod=avpriv_strtod
4347         network_extralibs='-lbsd'
4348         exeobjs=compat/plan9/main.o
4349         disable ffserver
4350         cp_f='cp'
4351         ;;
4352     none)
4353         ;;
4354     *)
4355         die "Unknown OS '$target_os'."
4356         ;;
4357 esac
4358
4359 # determine libc flavour
4360
4361 probe_libc(){
4362     pfx=$1
4363     pfx_no_=${pfx%_}
4364     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4365     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4366         eval ${pfx}libc_type=uclibc
4367         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4368     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4369         eval ${pfx}libc_type=glibc
4370         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4371     # MinGW headers can be installed on Cygwin, so check for newlib first.
4372     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4373         eval ${pfx}libc_type=newlib
4374         add_${pfx}cppflags -U__STRICT_ANSI__
4375     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4376     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4377         eval ${pfx}libc_type=mingw64
4378         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4379             add_compat msvcrt/snprintf.o
4380             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4381         fi
4382         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4383         eval test \$${pfx_no_}cc_type = "gcc" &&
4384             add_${pfx}cppflags -D__printf__=__gnu_printf__
4385     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4386          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4387         eval ${pfx}libc_type=mingw32
4388         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4389             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4390             die "ERROR: MinGW32 runtime version must be >= 3.15."
4391         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4392         eval test \$${pfx_no_}cc_type = "gcc" &&
4393             add_${pfx}cppflags -D__printf__=__gnu_printf__
4394     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4395         eval ${pfx}libc_type=msvcrt
4396         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4397         # 0x601 by default unless something else is set by the user.
4398         # This can easily lead to us detecting functions only present
4399         # in such new versions and producing binaries requiring windows 7.0.
4400         # Therefore explicitly set the default to XP unless the user has
4401         # set something else on the command line.
4402         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4403             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4404     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4405         eval ${pfx}libc_type=klibc
4406     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4407         eval ${pfx}libc_type=bionic
4408     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4409         eval ${pfx}libc_type=solaris
4410         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4411     fi
4412     check_${pfx}cc <<EOF
4413 #include <time.h>
4414 void *v = localtime_r;
4415 EOF
4416 test "$?" != 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
4417 #include <time.h>
4418 void *v = localtime_r;
4419 EOF
4420
4421 }
4422
4423 probe_libc
4424 test -n "$libc_type" && enable libc_$libc_type
4425 probe_libc host_
4426 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4427
4428 case $libc_type in
4429     bionic)
4430         add_compat strtod.o strtod=avpriv_strtod
4431         ;;
4432     msvcrt)
4433         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4434             add_compat strtod.o strtod=avpriv_strtod
4435             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4436                                          _snprintf=avpriv_snprintf  \
4437                                          vsnprintf=avpriv_vsnprintf
4438         fi
4439         ;;
4440 esac
4441
4442 # hacks for compiler/libc/os combinations
4443
4444 if enabled_all tms470 libc_glibc; then
4445     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4446     add_cppflags -D__USER_LABEL_PREFIX__=
4447     add_cppflags -D__builtin_memset=memset
4448     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4449     add_cflags   -pds=48    # incompatible redefinition of macro
4450 fi
4451
4452 if enabled_all ccc libc_glibc; then
4453     add_ldflags -Wl,-z,now  # calls to libots crash without this
4454 fi
4455
4456 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4457     add_cppflags '-I\$(SRC_PATH)/compat/float'
4458
4459 esc(){
4460     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4461 }
4462
4463 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4464
4465 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4466
4467 set_default libdir
4468 : ${shlibdir_default:="$libdir"}
4469
4470 set_default $PATHS_LIST
4471 set_default nm
4472
4473 # we need to build at least one lib type
4474 if ! enabled_any static shared; then
4475     cat <<EOF
4476 At least one library type must be built.
4477 Specify --enable-static to build the static libraries or --enable-shared to
4478 build the shared libraries as well. To only build the shared libraries specify
4479 --disable-static in addition to --enable-shared.
4480 EOF
4481     exit 1;
4482 fi
4483
4484 die_license_disabled() {
4485     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4486 }
4487
4488 die_license_disabled_gpl() {
4489     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4490 }
4491
4492 die_license_disabled gpl frei0r
4493 die_license_disabled gpl libcdio
4494 die_license_disabled gpl libsmbclient
4495 die_license_disabled gpl libutvideo
4496 die_license_disabled gpl libvidstab
4497 die_license_disabled gpl libx264
4498 die_license_disabled gpl libx265
4499 die_license_disabled gpl libxavs
4500 die_license_disabled gpl libxvid
4501 die_license_disabled gpl libzvbi
4502 die_license_disabled gpl x11grab
4503
4504 die_license_disabled nonfree libaacplus
4505 die_license_disabled nonfree libfaac
4506 die_license_disabled nonfree nvenc
4507 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4508 enabled gpl && die_license_disabled_gpl nonfree openssl
4509
4510 die_license_disabled version3 libopencore_amrnb
4511 die_license_disabled version3 libopencore_amrwb
4512 die_license_disabled version3 libsmbclient
4513 die_license_disabled version3 libvo_aacenc
4514 die_license_disabled version3 libvo_amrwbenc
4515
4516 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4517
4518 disabled optimizations || check_cflags -fomit-frame-pointer
4519
4520 enable_weak_pic() {
4521     disabled pic && return
4522     enable pic
4523     add_cppflags -DPIC
4524     case "$target_os" in
4525     mingw*|cygwin*)
4526         ;;
4527     *)
4528         add_cflags -fPIC
4529         ;;
4530     esac
4531     add_asflags  -fPIC
4532 }
4533
4534 enabled pic && enable_weak_pic
4535
4536 check_cc <<EOF || die "Symbol mangling check failed."
4537 int ff_extern;
4538 EOF
4539 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4540 extern_prefix=${sym%%ff_extern*}
4541
4542 check_cc <<EOF && enable_weak inline_asm
4543 void foo(void) { __asm__ volatile ("" ::); }
4544 EOF
4545
4546 _restrict=
4547 for restrict_keyword in restrict __restrict__ __restrict; do
4548     check_cc <<EOF && _restrict=$restrict_keyword && break
4549 void foo(char * $restrict_keyword p);
4550 EOF
4551 done
4552
4553 check_cc <<EOF && enable pragma_deprecated
4554 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4555 EOF
4556
4557 check_cc <<EOF && enable attribute_packed
4558 struct { int x; } __attribute__((packed)) x;
4559 EOF
4560
4561 check_cc <<EOF && enable attribute_may_alias
4562 union { int x; } __attribute__((may_alias)) x;
4563 EOF
4564
4565 check_cc <<EOF || die "endian test failed"
4566 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4567 EOF
4568 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4569
4570 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4571     if ! enabled bigendian && enabled altivec ;then
4572         enable vsx
4573     fi
4574 fi
4575
4576 check_gas() {
4577     log "check_gas using '$as' as AS"
4578     # :vararg is used on aarch64, arm and ppc altivec
4579     check_as <<EOF || return 1
4580 .macro m n, y:vararg=0
4581 \n: .int \y
4582 .endm
4583 m x
4584 EOF
4585     # .altmacro is only used in arm asm
4586     ! enabled arm || check_as <<EOF || return 1
4587 .altmacro
4588 EOF
4589     enable gnu_as
4590     return 0
4591 }
4592
4593 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4594     nogas=:
4595     enabled_any arm aarch64 && nogas=die
4596     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4597     as_noop=-v
4598
4599     case $as_type in
4600         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4601         gcc)  gaspp_as_type=gas ;;
4602         *)    gaspp_as_type=$as_type ;;
4603     esac
4604
4605     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4606
4607     test "${as#*gas-preprocessor.pl}" != "$as" ||
4608     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4609         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4610
4611     if ! check_gas ; then
4612         as=${gas:=$as}
4613         check_gas || \
4614             $nogas "GNU assembler not found, install/update gas-preprocessor"
4615     fi
4616
4617     check_as <<EOF && enable as_func
4618 .func test
4619 .endfunc
4620 EOF
4621 fi
4622
4623 check_inline_asm inline_asm_labels '"1:\n"'
4624
4625 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4626
4627 if enabled aarch64; then
4628     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4629     # internal assembler in clang 3.3 does not support this instruction
4630     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4631     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4632
4633     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4634
4635 elif enabled alpha; then
4636
4637     check_cflags -mieee
4638
4639 elif enabled arm; then
4640
4641     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4642 float func(float a, float b){ return a+b; }
4643 EOF
4644
4645     enabled thumb && check_cflags -mthumb || check_cflags -marm
4646
4647     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4648         enable vfp_args
4649     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4650         case "${cross_prefix:-$cc}" in
4651             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4652             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4653 __asm__ (".eabi_attribute 28, 1");
4654 int main(void) { return 0; }
4655 EOF
4656         esac
4657         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4658     fi
4659
4660     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4661     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4662     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4663     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4664     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4665     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4666     enabled setend  && check_insn setend  'setend be'
4667
4668     [ $target_os = linux ] || [ $target_os = android ] ||
4669         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4670             $ARCH_EXT_LIST_ARM
4671
4672     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4673
4674     check_as <<EOF && enable as_dn_directive
4675 ra .dn d0.i16
4676 .unreq ra
4677 EOF
4678
4679     # llvm's integrated assembler supports .object_arch from llvm 3.5
4680     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4681 .object_arch armv4
4682 EOF
4683
4684     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4685
4686 elif enabled mips; then
4687
4688     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4689
4690     # Enable minimum ISA based on selected options
4691     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4692         add_cflags "-mips64r2"
4693         add_asflags "-mips64r2"
4694     elif enabled mips64 && enabled mipsfpu; then
4695         add_cflags "-mips64"
4696         add_asflags "-mips64"
4697     elif enabled mipsdspr1 || enabled mipsdspr2; then
4698         add_cflags "-mips32r2 -mfp32"
4699         add_asflags "-mips32r2 -mfp32"
4700     elif enabled mips32r5 || enabled mips64r6; then
4701         check_cflags "-mfp64"
4702         check_ldflags "-mfp64"
4703     fi
4704
4705     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4706      check_ldflags "-mips32r5" &&
4707      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4708     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4709      check_ldflags "-mips64r6" &&
4710      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4711     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4712      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4713     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4714      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4715     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4716      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4717     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4718      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4719     enabled loongson3 && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4720         check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4721
4722     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4723     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4724     enabled msa && add_asflags "-mmsa"
4725
4726 elif enabled parisc; then
4727
4728     if enabled gcc; then
4729         case $($cc -dumpversion) in
4730             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4731         esac
4732     fi
4733
4734 elif enabled ppc; then
4735
4736     enable local_aligned_8 local_aligned_16 local_aligned_32
4737
4738     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4739     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4740     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4741     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4742
4743     # AltiVec flags: The FSF version of GCC differs from the Apple version
4744     if enabled altivec; then
4745         check_cflags -maltivec -mabi=altivec &&
4746         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4747         check_cflags -faltivec
4748
4749         # check if our compiler supports Motorola AltiVec C API
4750         check_cc <<EOF || disable altivec
4751 $inc_altivec_h
4752 int main(void) {
4753     vector signed int v1 = (vector signed int) { 0 };
4754     vector signed int v2 = (vector signed int) { 1 };
4755     v1 = vec_add(v1, v2);
4756     return 0;
4757 }
4758 EOF
4759
4760         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4761     fi
4762
4763     if enabled vsx; then
4764         check_cflags -mvsx
4765     fi
4766 elif enabled x86; then
4767
4768     check_builtin rdtsc    intrin.h   "__rdtsc()"
4769     check_builtin mm_empty mmintrin.h "_mm_empty()"
4770
4771     enable local_aligned_8 local_aligned_16 local_aligned_32
4772
4773     # check whether EBP is available on x86
4774     # As 'i' is stored on the stack, this program will crash
4775     # if the base pointer is used to access it because the
4776     # base pointer is cleared in the inline assembly code.
4777     check_exec_crash <<EOF && enable ebp_available
4778 volatile int i=0;
4779 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4780 return i;
4781 EOF
4782
4783     # check whether EBX is available on x86
4784     check_inline_asm ebx_available '""::"b"(0)' &&
4785         check_inline_asm ebx_available '"":::"%ebx"'
4786
4787     # check whether xmm clobbers are supported
4788     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4789
4790     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4791         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4792
4793     # check whether binutils is new enough to compile SSSE3/MMXEXT
4794     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4795     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4796
4797     if ! disabled_any asm mmx yasm; then
4798         if check_cmd $yasmexe --version; then
4799             enabled x86_64 && yasm_extra="-m amd64"
4800             yasm_debug="-g dwarf2"
4801         elif check_cmd nasm -v; then
4802             yasmexe=nasm
4803             yasm_debug="-g -F dwarf"
4804             if enabled x86_64; then
4805                 case "$objformat" in
4806                     elf)   objformat=elf64 ;;
4807                     win32) objformat=win64 ;;
4808                 esac
4809             fi
4810         fi
4811
4812         YASMFLAGS="-f $objformat $yasm_extra"
4813         enabled pic               && append YASMFLAGS "-DPIC"
4814         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4815         case "$objformat" in
4816             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4817         esac
4818
4819         check_yasm "movbe ecx, [5]" && enable yasm ||
4820             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4821         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4822         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4823         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4824         check_yasm "CPU amdnop" || disable cpunop
4825     fi
4826
4827     case "$cpu" in
4828         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4829             disable fast_clz
4830         ;;
4831     esac
4832
4833 fi
4834
4835 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4836
4837 check_ldflags -Wl,--as-needed
4838 check_ldflags -Wl,-z,noexecstack
4839
4840 if check_func dlopen; then
4841     ldl=
4842 elif check_func dlopen -ldl; then
4843     ldl=-ldl
4844 fi
4845
4846 frei0r_filter_extralibs='$ldl'
4847 frei0r_src_filter_extralibs='$ldl'
4848 ladspa_filter_extralibs='$ldl'
4849 nvenc_encoder_extralibs='$ldl'
4850
4851 if ! disabled network; then
4852     check_func getaddrinfo $network_extralibs
4853     check_func getservbyport $network_extralibs
4854     check_func inet_aton $network_extralibs
4855
4856     check_type netdb.h "struct addrinfo"
4857     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4858     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4859     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4860     check_type poll.h "struct pollfd"
4861     check_type netinet/sctp.h "struct sctp_event_subscribe"
4862     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4863     check_type netinet/in.h "struct sockaddr_in6"
4864     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4865     check_type "sys/types.h sys/socket.h" socklen_t
4866
4867     # Prefer arpa/inet.h over winsock2
4868     if check_header arpa/inet.h ; then
4869         check_func closesocket
4870     elif check_header winsock2.h ; then
4871         check_func_headers winsock2.h closesocket -lws2 &&
4872             network_extralibs="-lws2" ||
4873         { check_func_headers winsock2.h closesocket -lws2_32 &&
4874             network_extralibs="-lws2_32"; } || disable winsock2_h network
4875         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4876
4877         check_type ws2tcpip.h socklen_t
4878         check_type ws2tcpip.h "struct addrinfo"
4879         check_type ws2tcpip.h "struct group_source_req"
4880         check_type ws2tcpip.h "struct ip_mreq_source"
4881         check_type ws2tcpip.h "struct ipv6_mreq"
4882         check_type winsock2.h "struct pollfd"
4883         check_struct winsock2.h "struct sockaddr" sa_len
4884         check_type ws2tcpip.h "struct sockaddr_in6"
4885         check_type ws2tcpip.h "struct sockaddr_storage"
4886     else
4887         disable network
4888     fi
4889 fi
4890
4891 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4892 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4893 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4894 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4895 check_builtin sarestart signal.h "SA_RESTART"
4896 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4897
4898 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4899 check_func  ${malloc_prefix}memalign            && enable memalign
4900 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4901
4902 check_func  access
4903 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4904 check_func  fcntl
4905 check_func  fork
4906 check_func  gethrtime
4907 check_func  getopt
4908 check_func  getrusage
4909 check_func  gettimeofday
4910 check_func  gmtime_r
4911 check_func  isatty
4912 check_func  localtime_r
4913 check_func  mach_absolute_time
4914 check_func  mkstemp
4915 check_func  mmap
4916 check_func  mprotect
4917 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4918 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4919 check_func  sched_getaffinity
4920 check_func  setrlimit
4921 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4922 check_func  strerror_r
4923 check_func  sysconf
4924 check_func  sysctl
4925 check_func  usleep
4926
4927 check_func_headers conio.h kbhit
4928 check_func_headers io.h setmode
4929 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4930 check_func_headers stdlib.h getenv
4931
4932 check_func_headers windows.h CoTaskMemFree -lole32
4933 check_func_headers windows.h GetProcessAffinityMask
4934 check_func_headers windows.h GetProcessTimes
4935 check_func_headers windows.h GetSystemTimeAsFileTime
4936 check_func_headers windows.h MapViewOfFile
4937 check_func_headers windows.h PeekNamedPipe
4938 check_func_headers windows.h SetConsoleTextAttribute
4939 check_func_headers windows.h Sleep
4940 check_func_headers windows.h VirtualAlloc
4941 check_struct windows.h "CONDITION_VARIABLE" Ptr
4942 check_func_headers glob.h glob
4943 enabled xlib &&
4944     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4945
4946 check_header direct.h
4947 check_header dlfcn.h
4948 check_header dxva.h
4949 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4950 check_header io.h
4951 check_header libcrystalhd/libcrystalhd_if.h
4952 check_header mach/mach_time.h
4953 check_header malloc.h
4954 check_header net/udplite.h
4955 check_header poll.h
4956 check_header sys/mman.h
4957 check_header sys/param.h
4958 check_header sys/resource.h
4959 check_header sys/select.h
4960 check_header sys/time.h
4961 check_header sys/un.h
4962 check_header termios.h
4963 check_header unistd.h
4964 check_header valgrind/valgrind.h
4965 check_header vdpau/vdpau.h
4966 check_header vdpau/vdpau_x11.h
4967 check_header VideoDecodeAcceleration/VDADecoder.h
4968 check_header windows.h
4969 check_header X11/extensions/XvMClib.h
4970 check_header asm/types.h
4971
4972 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4973 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4974 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4975
4976 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4977
4978 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4979
4980 if ! disabled w32threads && ! enabled pthreads; then
4981     check_func_headers "windows.h process.h" _beginthreadex &&
4982         enable w32threads || disable w32threads
4983 fi
4984
4985 # check for some common methods of building with pthread support
4986 # do this before the optional library checks as some of them require pthreads
4987 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4988     enable pthreads
4989     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4990         add_cflags -pthread
4991         add_extralibs -pthread
4992     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4993         add_cflags -pthreads
4994         add_extralibs -pthreads
4995     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4996         add_cflags -ldl -pthread
4997         add_extralibs -ldl -pthread
4998     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4999         add_extralibs -lpthreadGC2
5000     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5001         :
5002     elif ! check_func pthread_join && ! check_func pthread_create; then
5003         disable pthreads
5004     fi
5005     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5006 fi
5007
5008
5009 if enabled pthreads; then
5010   check_func pthread_cancel
5011 fi
5012
5013 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5014 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5015 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5016
5017 check_lib math.h sin -lm && LIBM="-lm"
5018 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5019
5020 atan2f_args=2
5021 ldexpf_args=2
5022 powf_args=2
5023
5024 for func in $MATH_FUNCS; do
5025     eval check_mathfunc $func \${${func}_args:-1}
5026 done
5027
5028 # these are off by default, so fail if requested and not available
5029 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5030 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5031                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5032 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5033                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5034                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5035 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5036 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5037 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5038 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5039 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5040 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5041 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5042 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5043 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5044 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5045                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5046                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5047 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5048 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5049 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5050 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5051 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"
5052 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5053 enabled fontconfig        && enable libfontconfig
5054 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5055 enabled libfreetype       && require_libfreetype
5056 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5057 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5058 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5059                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5060                                done || die "ERROR: libgsm not found"; }
5061 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5062 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5063 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5064 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5065 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5066 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5067 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5068 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5069 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5070 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5071                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5072                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5073                                die "ERROR: libopenjpeg not found"; }
5074 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5075 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5076 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5077 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5078 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5079 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5080 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5081                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5082 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5083 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5084 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5085 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5086     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5087     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5088 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5089 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5090                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5091                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5092 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5093 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5094 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5095 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5096 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5097 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5098 enabled libvpx            && {
5099     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5100                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5101     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 ||
5102                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5103     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5104     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; } }
5105 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5106 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5107 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5108                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5109                                  warn "using libx264 without pkg-config"; } } &&
5110                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5111                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5112 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5113                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
5114                                die "ERROR: libx265 version must be >= 17."; }
5115 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5116 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5117 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5118 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5119 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5120                                 { ! enabled cross_compile && {
5121                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5122                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5123                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5124                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5125                                die "ERROR: mmal not found"; }
5126 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5127                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5128                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5129                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5130 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5131                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5132                                die "ERROR: openal not found"; } &&
5133                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5134                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5135 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5136                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5137                                die "ERROR: opencl not found"; } &&
5138                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5139                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5140                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5141 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5142                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5143                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5144                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5145                                die "ERROR: opengl not found."
5146                              }
5147 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5148                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5149                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5150                                die "ERROR: openssl not found"; }
5151 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5152
5153 if enabled gnutls; then
5154     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5155     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5156 fi
5157
5158 # libdc1394 check
5159 if enabled libdc1394; then
5160     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5161         enable libdc1394_2; } ||
5162     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5163         enable libdc1394_1; } ||
5164     die "ERROR: No version of libdc1394 found "
5165 fi
5166 if ! disabled sdl; then
5167     SDL_CONFIG="${cross_prefix}sdl-config"
5168     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5169         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5170         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5171         enable sdl
5172     else
5173         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5174             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5175             sdl_libs=$("${SDL_CONFIG}" --libs)
5176             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5177             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5178             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5179             enable sdl
5180         elif enabled sdl ; then
5181             die "ERROR: SDL not found"
5182         else
5183             disable sdl
5184         fi
5185     fi
5186 fi
5187 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5188
5189 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5190 enabled makeinfo && (makeinfo --version | \
5191                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5192     && enable makeinfo_html || disable makeinfo_html
5193 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5194 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5195 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5196 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5197
5198 check_header linux/fb.h
5199 check_header linux/videodev.h
5200 check_header linux/videodev2.h
5201 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5202
5203 check_header sys/videoio.h
5204 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5205
5206 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5207 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5208 # w32api 3.12 had it defined wrong
5209 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5210
5211 check_type "dshow.h" IBaseFilter
5212
5213 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5214 { check_header dev/bktr/ioctl_meteor.h &&
5215   check_header dev/bktr/ioctl_bt848.h; } ||
5216 { check_header machine/ioctl_meteor.h &&
5217   check_header machine/ioctl_bt848.h; } ||
5218 { check_header dev/video/meteor/ioctl_meteor.h &&
5219   check_header dev/video/bktr/ioctl_bt848.h; } ||
5220 check_header dev/ic/bt8xx.h
5221
5222 check_header sndio.h
5223 if check_struct sys/soundcard.h audio_buf_info bytes; then
5224     enable_safe sys/soundcard.h
5225 else
5226     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5227     #include <sys/soundcard.h>
5228     audio_buf_info abc;
5229 EOF
5230 fi
5231 check_header soundcard.h
5232
5233 enabled_any alsa_indev alsa_outdev &&
5234     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5235
5236 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5237     check_func jack_port_get_latency_range -ljack
5238
5239 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5240
5241 if enabled libcdio; then
5242     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5243     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5244     die "ERROR: No usable libcdio/cdparanoia found"
5245 fi
5246
5247 enabled xlib &&
5248     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5249
5250 if ! disabled libxcb; then
5251     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5252         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5253     } && disable x11grab && enable libxcb
5254
5255 if enabled libxcb; then
5256     disabled libxcb_shm || {
5257         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5258             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5259         } && check_header sys/shm.h && enable libxcb_shm; }
5260
5261     disabled libxcb_xfixes || {
5262         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5263             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5264         } && enable libxcb_xfixes; }
5265
5266     disabled libxcb_shape || {
5267         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5268             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5269         } && enable libxcb_shape; }
5270
5271     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5272     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5273 fi
5274 fi
5275
5276 if enabled x11grab; then
5277     enabled xlib || die "ERROR: Xlib not found"
5278     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5279     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5280 fi
5281
5282 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5283
5284 enabled dxva2api_h &&
5285     check_cc <<EOF && enable dxva2api_cobj
5286 #define _WIN32_WINNT 0x0600
5287 #define COBJMACROS
5288 #include <windows.h>
5289 #include <d3d9.h>
5290 #include <dxva2api.h>
5291 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5292 EOF
5293
5294 enabled vaapi &&
5295     check_lib va/va.h vaInitialize -lva ||
5296     disable vaapi
5297
5298 enabled vaapi && enabled xlib &&
5299     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5300     enable vaapi_x11
5301
5302 enabled vdpau &&
5303     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5304     disable vdpau
5305
5306 enabled vdpau && enabled xlib &&
5307     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5308     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5309     enable vdpau_x11
5310
5311 # Funny iconv installations are not unusual, so check it after all flags have been set
5312 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5313
5314 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5315
5316 # add some useful compiler flags if supported
5317 check_cflags -Wdeclaration-after-statement
5318 check_cflags -Wall
5319 check_cflags -Wdisabled-optimization
5320 check_cflags -Wpointer-arith
5321 check_cflags -Wredundant-decls
5322 check_cflags -Wwrite-strings
5323 check_cflags -Wtype-limits
5324 check_cflags -Wundef
5325 check_cflags -Wmissing-prototypes
5326 check_cflags -Wno-pointer-to-int-cast
5327 check_cflags -Wstrict-prototypes
5328 check_cflags -Wempty-body
5329 enabled extra_warnings && check_cflags -Winline
5330
5331 check_disable_warning(){
5332     warning_flag=-W${1#-Wno-}
5333     test_cflags $warning_flag && add_cflags $1
5334 }
5335
5336 check_disable_warning -Wno-parentheses
5337 check_disable_warning -Wno-switch
5338 check_disable_warning -Wno-format-zero-length
5339 check_disable_warning -Wno-pointer-sign
5340
5341 # add some linker flags
5342 check_ldflags -Wl,--warn-common
5343 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5344 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5345 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5346
5347 # add some strip flags
5348 # -wN '..@*' is more selective than -x, but not available everywhere.
5349 check_stripflags -wN \'..@*\' || check_stripflags -x
5350
5351 enabled neon_clobber_test &&
5352     check_ldflags -Wl,--wrap,avcodec_open2              \
5353                   -Wl,--wrap,avcodec_decode_audio4      \
5354                   -Wl,--wrap,avcodec_decode_video2      \
5355                   -Wl,--wrap,avcodec_decode_subtitle2   \
5356                   -Wl,--wrap,avcodec_encode_audio2      \
5357                   -Wl,--wrap,avcodec_encode_video2      \
5358                   -Wl,--wrap,avcodec_encode_subtitle    \
5359                   -Wl,--wrap,swr_convert                \
5360                   -Wl,--wrap,avresample_convert ||
5361     disable neon_clobber_test
5362
5363 enabled xmm_clobber_test &&
5364     check_ldflags -Wl,--wrap,avcodec_open2              \
5365                   -Wl,--wrap,avcodec_decode_audio4      \
5366                   -Wl,--wrap,avcodec_decode_video2      \
5367                   -Wl,--wrap,avcodec_decode_subtitle2   \
5368                   -Wl,--wrap,avcodec_encode_audio2      \
5369                   -Wl,--wrap,avcodec_encode_video       \
5370                   -Wl,--wrap,avcodec_encode_video2      \
5371                   -Wl,--wrap,avcodec_encode_subtitle    \
5372                   -Wl,--wrap,swr_convert                \
5373                   -Wl,--wrap,avresample_convert         \
5374                   -Wl,--wrap,sws_scale ||
5375     disable xmm_clobber_test
5376
5377 echo "X{};" > $TMPV
5378 if test_ldflags -Wl,--version-script,$TMPV; then
5379     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5380     check_cc <<EOF && enable symver_asm_label
5381 void ff_foo(void) __asm__ ("av_foo@VERSION");
5382 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5383 EOF
5384     check_cc <<EOF && enable symver_gnu_asm
5385 __asm__(".symver ff_foo,av_foo@VERSION");
5386 void ff_foo(void) {}
5387 EOF
5388 fi
5389
5390 if [ -z "$optflags" ]; then
5391     if enabled small; then
5392         optflags=$cflags_size
5393     elif enabled optimizations; then
5394         optflags=$cflags_speed
5395     else
5396         optflags=$cflags_noopt
5397     fi
5398 fi
5399
5400 check_optflags(){
5401     check_cflags "$@"
5402     enabled lto && check_ldflags "$@"
5403 }
5404
5405
5406 if enabled lto; then
5407     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5408     check_cflags  -flto
5409     check_ldflags -flto $cpuflags
5410     disable inline_asm_direct_symbol_refs
5411 fi
5412
5413 check_optflags $optflags
5414 check_optflags -fno-math-errno
5415 check_optflags -fno-signed-zeros
5416
5417 enabled ftrapv && check_cflags -ftrapv
5418
5419 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5420 int x;
5421 EOF
5422
5423
5424 if enabled icc; then
5425     # Just warnings, no remarks
5426     check_cflags -w1
5427     # -wd: Disable following warnings
5428     # 144, 167, 556: -Wno-pointer-sign
5429     # 188: enumerated type mixed with another type
5430     # 1292: attribute "foo" ignored
5431     # 1419: external declaration in primary source file
5432     # 10006: ignoring unknown option -fno-signed-zeros
5433     # 10148: ignoring unknown option -Wno-parentheses
5434     # 10156: ignoring option '-W'; no argument required
5435     # 13200: No EMMS instruction before call to function
5436     # 13203: No EMMS instruction before return from function
5437     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5438     # 11030: Warning unknown option --as-needed
5439     # 10156: ignoring option '-export'; no argument required
5440     check_ldflags -wd10156,11030
5441     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5442     enable ebp_available
5443     # The test above does not test linking
5444     enabled lto && disable symver_asm_label
5445     if enabled x86_32; then
5446         icc_version=$($cc -dumpversion)
5447         test ${icc_version%%.*} -ge 11 &&
5448             check_cflags -falign-stack=maintain-16-byte ||
5449             disable aligned_stack
5450     fi
5451 elif enabled ccc; then
5452     # disable some annoying warnings
5453     add_cflags -msg_disable bitnotint
5454     add_cflags -msg_disable mixfuncvoid
5455     add_cflags -msg_disable nonstandcast
5456     add_cflags -msg_disable unsupieee
5457 elif enabled gcc; then
5458     check_optflags -fno-tree-vectorize
5459     check_cflags -Werror=format-security
5460     check_cflags -Werror=implicit-function-declaration
5461     check_cflags -Werror=missing-prototypes
5462     check_cflags -Werror=return-type
5463     check_cflags -Werror=vla
5464     check_cflags -Wformat
5465     check_cflags -fdiagnostics-color=auto
5466     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5467 elif enabled llvm_gcc; then
5468     check_cflags -mllvm -stack-alignment=16
5469 elif enabled clang; then
5470     check_cflags -mllvm -stack-alignment=16
5471     check_cflags -Qunused-arguments
5472     check_cflags -Werror=implicit-function-declaration
5473     check_cflags -Werror=missing-prototypes
5474     check_cflags -Werror=return-type
5475 elif enabled cparser; then
5476     add_cflags -Wno-missing-variable-declarations
5477     add_cflags -Wno-empty-statement
5478 elif enabled armcc; then
5479     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5480     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5481     # 2523: use of inline assembly is deprecated
5482     add_cflags -W${armcc_opt},--diag_suppress=2523
5483     add_cflags -W${armcc_opt},--diag_suppress=1207
5484     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5485     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5486     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5487     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5488 elif enabled tms470; then
5489     add_cflags -pds=824 -pds=837
5490     disable inline_asm
5491 elif enabled pathscale; then
5492     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5493 elif enabled_any msvc icl; then
5494     enabled x86_32 && disable aligned_stack
5495     enabled_all x86_32 debug && add_cflags -Oy-
5496     enabled debug && add_ldflags -debug
5497     enable pragma_deprecated
5498     if enabled icl; then
5499         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5500         # (correctly) on icl 13.x.
5501         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5502             add_cflags -Qansi-alias
5503         # Some inline asm is not compilable in debug
5504         if enabled debug; then
5505             disable ebp_available
5506             disable ebx_available
5507         fi
5508     fi
5509     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5510     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5511 fi
5512
5513 case $as_type in
5514     clang)
5515         add_asflags -Qunused-arguments
5516     ;;
5517 esac
5518
5519 case $ld_type in
5520     clang)
5521         check_ldflags -Qunused-arguments
5522     ;;
5523 esac
5524
5525 case $target_os in
5526     osf1)
5527         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5528     ;;
5529     plan9)
5530         add_cppflags -Dmain=plan9_main
5531     ;;
5532 esac
5533
5534 enable frame_thread_encoder
5535
5536 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5537
5538 check_deps $CONFIG_LIST       \
5539            $CONFIG_EXTRA      \
5540            $HAVE_LIST         \
5541            $ALL_COMPONENTS    \
5542
5543 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"
5544
5545
5546 if test $target_os = "haiku"; then
5547     disable memalign
5548     disable posix_memalign
5549 fi
5550
5551 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5552     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5553     enable dxva2_lib
5554
5555 ! enabled_any memalign posix_memalign aligned_malloc &&
5556     enabled simd_align_16 && enable memalign_hack
5557
5558 # add_dep lib dep
5559 # -> enable ${lib}_deps_${dep}
5560 # -> add $dep to ${lib}_deps only once
5561 add_dep() {
5562     lib=$1
5563     dep=$2
5564     enabled "${lib}_deps_${dep}" && return 0
5565     enable  "${lib}_deps_${dep}"
5566     prepend "${lib}_deps" $dep
5567 }
5568
5569 # merge deps lib components
5570 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5571 merge_deps() {
5572     lib=$1
5573     shift
5574     for comp in $*; do
5575         enabled $comp || continue
5576         eval "dep=\"\$${comp}_deps\""
5577         for d in $dep; do
5578             add_dep $lib $d
5579         done
5580     done
5581 }
5582
5583 merge_deps libavfilter $FILTER_LIST
5584
5585 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5586
5587 for thread in $THREADS_LIST; do
5588     if enabled $thread; then
5589         test -n "$thread_type" &&
5590             die "ERROR: Only one thread type must be selected." ||
5591             thread_type="$thread"
5592     fi
5593 done
5594
5595 enabled zlib && add_cppflags -DZLIB_CONST
5596
5597 # conditional library dependencies, in linking order
5598 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5599 enabled aresample_filter    && prepend avfilter_deps "swresample"
5600 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5601 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5602 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5603 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5604 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5605 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5606 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5607 enabled pan_filter          && prepend avfilter_deps "swresample"
5608 enabled pp_filter           && prepend avfilter_deps "postproc"
5609 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5610 enabled resample_filter && prepend avfilter_deps "avresample"
5611 enabled sab_filter          && prepend avfilter_deps "swscale"
5612 enabled scale_filter    && prepend avfilter_deps "swscale"
5613 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5614 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5615 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5616 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5617
5618 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5619
5620 enabled opus_decoder    && prepend avcodec_deps "swresample"
5621
5622 expand_deps(){
5623     lib_deps=${1}_deps
5624     eval "deps=\$$lib_deps"
5625     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5626     unique $lib_deps
5627 }
5628
5629 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5630 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5631
5632 map 'expand_deps $v' $LIBRARY_LIST
5633
5634 echo "install prefix            $prefix"
5635 echo "source path               $source_path"
5636 echo "C compiler                $cc"
5637 echo "C library                 $libc_type"
5638 if test "$host_cc" != "$cc"; then
5639     echo "host C compiler           $host_cc"
5640     echo "host C library            $host_libc_type"
5641 fi
5642 echo "ARCH                      $arch ($cpu)"
5643 if test "$build_suffix" != ""; then
5644     echo "build suffix              $build_suffix"
5645 fi
5646 if test "$progs_suffix" != ""; then
5647     echo "progs suffix              $progs_suffix"
5648 fi
5649 if test "$extra_version" != ""; then
5650     echo "version string suffix     $extra_version"
5651 fi
5652 echo "big-endian                ${bigendian-no}"
5653 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5654 if enabled x86; then
5655     echo "${yasmexe}                      ${yasm-no}"
5656     echo "MMX enabled               ${mmx-no}"
5657     echo "MMXEXT enabled            ${mmxext-no}"
5658     echo "3DNow! enabled            ${amd3dnow-no}"
5659     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5660     echo "SSE enabled               ${sse-no}"
5661     echo "SSSE3 enabled             ${ssse3-no}"
5662     echo "AVX enabled               ${avx-no}"
5663     echo "XOP enabled               ${xop-no}"
5664     echo "FMA3 enabled              ${fma3-no}"
5665     echo "FMA4 enabled              ${fma4-no}"
5666     echo "i686 features enabled     ${i686-no}"
5667     echo "CMOV is fast              ${fast_cmov-no}"
5668     echo "EBX available             ${ebx_available-no}"
5669     echo "EBP available             ${ebp_available-no}"
5670 fi
5671 if enabled aarch64; then
5672     echo "NEON enabled              ${neon-no}"
5673     echo "VFP enabled               ${vfp-no}"
5674 fi
5675 if enabled arm; then
5676     echo "ARMv5TE enabled           ${armv5te-no}"
5677     echo "ARMv6 enabled             ${armv6-no}"
5678     echo "ARMv6T2 enabled           ${armv6t2-no}"
5679     echo "VFP enabled               ${vfp-no}"
5680     echo "NEON enabled              ${neon-no}"
5681     echo "THUMB enabled             ${thumb-no}"
5682 fi
5683 if enabled mips; then
5684     echo "MIPS FPU enabled          ${mipsfpu-no}"
5685     echo "MIPS32R5 enabled          ${mips32r5-no}"
5686     echo "MIPS64R6 enabled          ${mips64r6-no}"
5687     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5688     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5689     echo "MIPS MSA enabled          ${msa-no}"
5690     echo "LOONGSON3 enabled         ${loongson3-no}"
5691 fi
5692 if enabled ppc; then
5693     echo "AltiVec enabled           ${altivec-no}"
5694     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5695     echo "PPC VSX optimizations     ${vsx-no}"
5696     echo "dcbzl available           ${dcbzl-no}"
5697 fi
5698 echo "debug symbols             ${debug-no}"
5699 echo "strip symbols             ${stripping-no}"
5700 echo "optimize for size         ${small-no}"
5701 echo "optimizations             ${optimizations-no}"
5702 echo "static                    ${static-no}"
5703 echo "shared                    ${shared-no}"
5704 echo "postprocessing support    ${postproc-no}"
5705 echo "new filter support        ${avfilter-no}"
5706 echo "network support           ${network-no}"
5707 echo "threading support         ${thread_type-no}"
5708 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5709 echo "SDL support               ${sdl-no}"
5710 echo "opencl enabled            ${opencl-no}"
5711 echo "texi2html enabled         ${texi2html-no}"
5712 echo "perl enabled              ${perl-no}"
5713 echo "pod2man enabled           ${pod2man-no}"
5714 echo "makeinfo enabled          ${makeinfo-no}"
5715 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5716 test -n "$random_seed" &&
5717     echo "random seed               ${random_seed}"
5718 echo
5719
5720 echo "External libraries:"
5721 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5722 echo
5723
5724 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5725     echo "Enabled ${type}s:"
5726     eval list=\$$(toupper $type)_LIST
5727     print_enabled '_*' $list | print_3_columns
5728     echo
5729 done
5730
5731 license="LGPL version 2.1 or later"
5732 if enabled nonfree; then
5733     license="nonfree and unredistributable"
5734 elif enabled gplv3; then
5735     license="GPL version 3 or later"
5736 elif enabled lgplv3; then
5737     license="LGPL version 3 or later"
5738 elif enabled gpl; then
5739     license="GPL version 2 or later"
5740 fi
5741
5742 echo "License: $license"
5743
5744 echo "Creating config.mak, config.h, and doc/config.texi..."
5745
5746 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5747
5748 enabled stripping || strip="echo skipping strip"
5749
5750 config_files="$TMPH config.mak doc/config.texi"
5751
5752 cat > config.mak <<EOF
5753 # Automatically generated by configure - do not modify!
5754 ifndef FFMPEG_CONFIG_MAK
5755 FFMPEG_CONFIG_MAK=1
5756 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5757 prefix=$prefix
5758 LIBDIR=\$(DESTDIR)$libdir
5759 SHLIBDIR=\$(DESTDIR)$shlibdir
5760 INCDIR=\$(DESTDIR)$incdir
5761 BINDIR=\$(DESTDIR)$bindir
5762 DATADIR=\$(DESTDIR)$datadir
5763 DOCDIR=\$(DESTDIR)$docdir
5764 MANDIR=\$(DESTDIR)$mandir
5765 SRC_PATH=$source_path
5766 ifndef MAIN_MAKEFILE
5767 SRC_PATH:=\$(SRC_PATH:.%=..%)
5768 endif
5769 CC_IDENT=$cc_ident
5770 ARCH=$arch
5771 INTRINSICS=$intrinsics
5772 CC=$cc
5773 CXX=$cxx
5774 AS=$as
5775 LD=$ld
5776 DEPCC=$dep_cc
5777 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5778 DEPAS=$as
5779 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5780 YASM=$yasmexe
5781 DEPYASM=$yasmexe
5782 AR=$ar
5783 ARFLAGS=$arflags
5784 AR_O=$ar_o
5785 RANLIB=$ranlib
5786 STRIP=$strip
5787 CP=cp -p
5788 LN_S=$ln_s
5789 CPPFLAGS=$CPPFLAGS
5790 CFLAGS=$CFLAGS
5791 CXXFLAGS=$CXXFLAGS
5792 ASFLAGS=$ASFLAGS
5793 AS_C=$AS_C
5794 AS_O=$AS_O
5795 CC_C=$CC_C
5796 CC_E=$CC_E
5797 CC_O=$CC_O
5798 CXX_C=$CXX_C
5799 CXX_O=$CXX_O
5800 LD_O=$LD_O
5801 LD_LIB=$LD_LIB
5802 LD_PATH=$LD_PATH
5803 DLLTOOL=$dlltool
5804 WINDRES=$windres
5805 DEPWINDRES=$dep_cc
5806 DOXYGEN=$doxygen
5807 LDFLAGS=$LDFLAGS
5808 LDEXEFLAGS=$LDEXEFLAGS
5809 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5810 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5811 YASMFLAGS=$YASMFLAGS
5812 BUILDSUF=$build_suffix
5813 PROGSSUF=$progs_suffix
5814 FULLNAME=$FULLNAME
5815 LIBPREF=$LIBPREF
5816 LIBSUF=$LIBSUF
5817 LIBNAME=$LIBNAME
5818 SLIBPREF=$SLIBPREF
5819 SLIBSUF=$SLIBSUF
5820 EXESUF=$EXESUF
5821 EXTRA_VERSION=$extra_version
5822 CCDEP=$CCDEP
5823 CXXDEP=$CXXDEP
5824 CCDEP_FLAGS=$CCDEP_FLAGS
5825 ASDEP=$ASDEP
5826 ASDEP_FLAGS=$ASDEP_FLAGS
5827 CC_DEPFLAGS=$CC_DEPFLAGS
5828 AS_DEPFLAGS=$AS_DEPFLAGS
5829 HOSTCC=$host_cc
5830 HOSTLD=$host_ld
5831 HOSTCFLAGS=$host_cflags
5832 HOSTCPPFLAGS=$host_cppflags
5833 HOSTEXESUF=$HOSTEXESUF
5834 HOSTLDFLAGS=$host_ldflags
5835 HOSTLIBS=$host_libs
5836 DEPHOSTCC=$host_cc
5837 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5838 HOSTCCDEP=$HOSTCCDEP
5839 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5840 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5841 HOSTCC_C=$HOSTCC_C
5842 HOSTCC_O=$HOSTCC_O
5843 HOSTLD_O=$HOSTLD_O
5844 TARGET_EXEC=$target_exec $target_exec_args
5845 TARGET_PATH=$target_path
5846 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5847 CFLAGS-ffplay=$sdl_cflags
5848 ZLIB=$($ldflags_filter -lz)
5849 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5850 EXTRALIBS=$extralibs
5851 COMPAT_OBJS=$compat_objs
5852 EXEOBJS=$exeobjs
5853 INSTALL=$install
5854 LIBTARGET=${LIBTARGET}
5855 SLIBNAME=${SLIBNAME}
5856 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5857 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5858 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5859 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5860 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5861 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5862 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5863 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5864 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5865 NOREDZONE_FLAGS=$noredzone_flags
5866 EOF
5867
5868 get_version(){
5869     lcname=lib${1}
5870     name=$(toupper $lcname)
5871     file=$source_path/$lcname/version.h
5872     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5873     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5874     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5875     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5876     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5877     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5878 }
5879
5880 map 'get_version $v' $LIBRARY_LIST
5881
5882 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5883
5884 print_program_libs(){
5885     eval "program_libs=\$${1}_libs"
5886     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5887 }
5888
5889 map 'print_program_libs $v' $PROGRAM_LIST
5890
5891 cat > $TMPH <<EOF
5892 /* Automatically generated by configure - do not modify! */
5893 #ifndef FFMPEG_CONFIG_H
5894 #define FFMPEG_CONFIG_H
5895 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5896 #define FFMPEG_LICENSE "$(c_escape $license)"
5897 #define CONFIG_THIS_YEAR 2015
5898 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5899 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5900 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5901 #define av_restrict $_restrict
5902 #define EXTERN_PREFIX "${extern_prefix}"
5903 #define EXTERN_ASM ${extern_prefix}
5904 #define BUILDSUF "$build_suffix"
5905 #define SLIBSUF "$SLIBSUF"
5906 #define HAVE_MMX2 HAVE_MMXEXT
5907 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5908 EOF
5909
5910 test -n "$assert_level" &&
5911     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5912
5913 test -n "$malloc_prefix" &&
5914     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5915
5916 if enabled yasm; then
5917     append config_files $TMPASM
5918     printf '' >$TMPASM
5919 fi
5920
5921 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5922
5923
5924 mkdir -p doc
5925 mkdir -p tests
5926 echo "@c auto-generated by configure" > doc/config.texi
5927
5928 print_config ARCH_   "$config_files" $ARCH_LIST
5929 print_config HAVE_   "$config_files" $HAVE_LIST
5930 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5931                                      $CONFIG_EXTRA      \
5932                                      $ALL_COMPONENTS    \
5933
5934 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5935 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5936
5937 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5938 cp_if_changed $TMPH config.h
5939 touch .config
5940
5941 enabled yasm && cp_if_changed $TMPASM config.asm
5942
5943 cat > $TMPH <<EOF
5944 /* Generated by ffconf */
5945 #ifndef AVUTIL_AVCONFIG_H
5946 #define AVUTIL_AVCONFIG_H
5947 EOF
5948
5949 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5950
5951 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5952
5953 cp_if_changed $TMPH libavutil/avconfig.h
5954
5955 if test -n "$WARNINGS"; then
5956     printf "\n$WARNINGS"
5957     enabled fatal_warnings && exit 1
5958 fi
5959
5960 # build pkg-config files
5961
5962 lib_version(){
5963     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5964 }
5965
5966 pkgconfig_generate(){
5967     name=$1
5968     shortname=${name#lib}${build_suffix}
5969     comment=$2
5970     version=$3
5971     libs=$4
5972     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5973     requires=${requires%, }
5974     enabled ${name#lib} || return 0
5975     mkdir -p $name
5976     cat <<EOF > $name/$name${build_suffix}.pc
5977 prefix=$prefix
5978 exec_prefix=\${prefix}
5979 libdir=$libdir
5980 includedir=$incdir
5981
5982 Name: $name
5983 Description: $comment
5984 Version: $version
5985 Requires: $(enabled shared || echo $requires)
5986 Requires.private: $(enabled shared && echo $requires)
5987 Conflicts:
5988 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5989 Libs.private: $(enabled shared && echo $libs)
5990 Cflags: -I\${includedir}
5991 EOF
5992
5993 mkdir -p doc/examples/pc-uninstalled
5994 includedir=${source_path}
5995 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5996     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5997 prefix=
5998 exec_prefix=
5999 libdir=\${pcfiledir}/../../../$name
6000 includedir=${includedir}
6001
6002 Name: $name
6003 Description: $comment
6004 Version: $version
6005 Requires: $requires
6006 Conflicts:
6007 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6008 Cflags: -I\${includedir}
6009 EOF
6010 }
6011
6012 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6013 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6014 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6015 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6016 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6017 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6018 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6019 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6020 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"