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 cover_rect_filter_deps="avcodec avformat gpl"
2639 cropdetect_filter_deps="gpl"
2640 delogo_filter_deps="gpl"
2641 deshake_filter_select="pixelutils"
2642 drawtext_filter_deps="libfreetype"
2643 ebur128_filter_deps="gpl"
2644 eq_filter_deps="gpl"
2645 fftfilt_filter_deps="avcodec"
2646 fftfilt_filter_select="rdft"
2647 flite_filter_deps="libflite"
2648 find_rect_filter_deps="avcodec avformat gpl"
2649 frei0r_filter_deps="frei0r dlopen"
2650 frei0r_src_filter_deps="frei0r dlopen"
2651 fspp_filter_deps="gpl"
2652 geq_filter_deps="gpl"
2653 histeq_filter_deps="gpl"
2654 hqdn3d_filter_deps="gpl"
2655 interlace_filter_deps="gpl"
2656 kerndeint_filter_deps="gpl"
2657 ladspa_filter_deps="ladspa dlopen"
2658 mcdeint_filter_deps="avcodec gpl"
2659 movie_filter_deps="avcodec avformat"
2660 mpdecimate_filter_deps="gpl"
2661 mpdecimate_filter_select="pixelutils"
2662 mptestsrc_filter_deps="gpl"
2663 negate_filter_deps="lut_filter"
2664 perspective_filter_deps="gpl"
2665 pp7_filter_deps="gpl"
2666 ocv_filter_deps="libopencv"
2667 owdenoise_filter_deps="gpl"
2668 pan_filter_deps="swresample"
2669 phase_filter_deps="gpl"
2670 pp_filter_deps="gpl postproc"
2671 pullup_filter_deps="gpl"
2672 removelogo_filter_deps="avcodec avformat swscale"
2673 repeatfields_filter_deps="gpl"
2674 resample_filter_deps="avresample"
2675 sab_filter_deps="gpl swscale"
2676 scale_filter_deps="swscale"
2677 select_filter_select="pixelutils"
2678 smartblur_filter_deps="gpl swscale"
2679 showspectrum_filter_deps="avcodec"
2680 showspectrum_filter_select="rdft"
2681 spp_filter_deps="gpl avcodec"
2682 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2683 stereo3d_filter_deps="gpl"
2684 subtitles_filter_deps="avformat avcodec libass"
2685 super2xsai_filter_deps="gpl"
2686 tinterlace_filter_deps="gpl"
2687 vidstabdetect_filter_deps="libvidstab"
2688 vidstabtransform_filter_deps="libvidstab"
2689 pixfmts_super2xsai_test_deps="super2xsai_filter"
2690 tinterlace_merge_test_deps="tinterlace_filter"
2691 tinterlace_pad_test_deps="tinterlace_filter"
2692 uspp_filter_deps="gpl avcodec"
2693 zmq_filter_deps="libzmq"
2694 zoompan_filter_deps="swscale"
2695
2696 # examples
2697 avio_reading="avformat avcodec avutil"
2698 avio_list_dir="avformat avutil"
2699 avcodec_example_deps="avcodec avutil"
2700 decoding_encoding_example_deps="avcodec avformat avutil"
2701 demuxing_decoding_example_deps="avcodec avformat avutil"
2702 extract_mvs_example_deps="avcodec avformat avutil"
2703 filter_audio_example_deps="avfilter avutil"
2704 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2705 filtering_video_example_deps="avfilter avcodec avformat avutil"
2706 metadata_example_deps="avformat avutil"
2707 muxing_example_deps="avcodec avformat avutil swscale"
2708 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2709 remuxing_example_deps="avcodec avformat avutil"
2710 resampling_audio_example_deps="avutil swresample"
2711 scaling_video_example_deps="avutil swscale"
2712 transcode_aac_example_deps="avcodec avformat swresample"
2713 transcoding_example_deps="avfilter avcodec avformat avutil"
2714
2715 # libraries, in linking order
2716 avcodec_deps="avutil"
2717 avdevice_deps="avformat avcodec avutil"
2718 avfilter_deps="avutil"
2719 avformat_deps="avcodec avutil"
2720 avresample_deps="avutil"
2721 postproc_deps="avutil gpl"
2722 swresample_deps="avutil"
2723 swscale_deps="avutil"
2724
2725 # programs
2726 ffmpeg_deps="avcodec avfilter avformat swresample"
2727 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2728                null_filter
2729                setpts_filter trim_filter"
2730 ffplay_deps="avcodec avformat swscale swresample sdl"
2731 ffplay_libs='$sdl_libs'
2732 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2733 ffprobe_deps="avcodec avformat"
2734 ffserver_deps="avformat fork sarestart"
2735 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2736
2737 # documentation
2738 podpages_deps="perl"
2739 manpages_deps="perl pod2man"
2740 htmlpages_deps="perl"
2741 htmlpages_deps_any="makeinfo_html texi2html"
2742 txtpages_deps="perl makeinfo"
2743 doc_deps_any="manpages htmlpages podpages txtpages"
2744
2745 # default parameters
2746
2747 logfile="config.log"
2748
2749 # installation paths
2750 prefix_default="/usr/local"
2751 bindir_default='${prefix}/bin'
2752 datadir_default='${prefix}/share/ffmpeg'
2753 docdir_default='${prefix}/share/doc/ffmpeg'
2754 incdir_default='${prefix}/include'
2755 libdir_default='${prefix}/lib'
2756 mandir_default='${prefix}/share/man'
2757
2758 # toolchain
2759 ar_default="ar"
2760 cc_default="gcc"
2761 cxx_default="g++"
2762 host_cc_default="gcc"
2763 cp_f="cp -f"
2764 doxygen_default="doxygen"
2765 install="install"
2766 ln_s="ln -s -f"
2767 nm_default="nm -g"
2768 objformat="elf"
2769 pkg_config_default=pkg-config
2770 if ranlib 2>&1 | grep -q "\-D "; then
2771     ranlib_default="ranlib -D"
2772 else
2773     ranlib_default="ranlib"
2774 fi
2775 strip_default="strip"
2776 yasmexe_default="yasm"
2777 windres_default="windres"
2778
2779 # OS
2780 target_os_default=$(tolower $(uname -s))
2781 host_os=$target_os_default
2782
2783 # machine
2784 if test "$target_os_default" = aix; then
2785     arch_default=$(uname -p)
2786     strip_default="strip -X32_64"
2787 else
2788     arch_default=$(uname -m)
2789 fi
2790 cpu="generic"
2791 intrinsics="none"
2792
2793 # configurable options
2794 enable $PROGRAM_LIST
2795 enable $DOCUMENT_LIST
2796 enable $EXAMPLE_LIST
2797 enable $(filter_out avresample $LIBRARY_LIST)
2798 enable stripping
2799
2800 enable asm
2801 enable debug
2802 enable doc
2803 enable faan faandct faanidct
2804 enable optimizations
2805 enable runtime_cpudetect
2806 enable safe_bitstream_reader
2807 enable static
2808 enable swscale_alpha
2809 enable valgrind_backtrace
2810
2811 sws_max_filter_size_default=256
2812 set_default sws_max_filter_size
2813
2814 # Enable hwaccels by default.
2815 enable dxva2 vaapi vda vdpau xvmc
2816 enable xlib
2817
2818 # build settings
2819 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2820 LIBPREF="lib"
2821 LIBSUF=".a"
2822 FULLNAME='$(NAME)$(BUILDSUF)'
2823 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2824 SLIBPREF="lib"
2825 SLIBSUF=".so"
2826 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2827 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2828 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2829 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2830 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2831 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2832
2833 asflags_filter=echo
2834 cflags_filter=echo
2835 ldflags_filter=echo
2836
2837 AS_C='-c'
2838 AS_O='-o $@'
2839 CC_C='-c'
2840 CC_E='-E -o $@'
2841 CC_O='-o $@'
2842 CXX_C='-c'
2843 CXX_O='-o $@'
2844 LD_O='-o $@'
2845 LD_LIB='-l%'
2846 LD_PATH='-L'
2847 HOSTCC_C='-c'
2848 HOSTCC_E='-E -o $@'
2849 HOSTCC_O='-o $@'
2850 HOSTLD_O='-o $@'
2851
2852 host_libs='-lm'
2853 host_cflags_filter=echo
2854 host_ldflags_filter=echo
2855
2856 target_path='$(CURDIR)'
2857
2858 # since the object filename is not given with the -MM flag, the compiler
2859 # is only able to print the basename, and we must add the path ourselves
2860 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2861 DEPFLAGS='-MM'
2862
2863 # find source path
2864 if test -f configure; then
2865     source_path=.
2866 else
2867     source_path=$(cd $(dirname "$0"); pwd)
2868     echo "$source_path" | grep -q '[[:blank:]]' &&
2869         die "Out of tree builds are impossible with whitespace in source path."
2870     test -e "$source_path/config.h" &&
2871         die "Out of tree builds are impossible with config.h in source dir."
2872 fi
2873
2874 for v in "$@"; do
2875     r=${v#*=}
2876     l=${v%"$r"}
2877     r=$(sh_quote "$r")
2878     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2879 done
2880
2881 find_things(){
2882     thing=$1
2883     pattern=$2
2884     file=$source_path/$3
2885     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2886 }
2887
2888 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2889 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2890 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2891 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2892 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2893 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2894 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2895 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2896 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2897 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2898 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2899
2900 ALL_COMPONENTS="
2901     $BSF_LIST
2902     $DECODER_LIST
2903     $DEMUXER_LIST
2904     $ENCODER_LIST
2905     $FILTER_LIST
2906     $HWACCEL_LIST
2907     $INDEV_LIST
2908     $MUXER_LIST
2909     $OUTDEV_LIST
2910     $PARSER_LIST
2911     $PROTOCOL_LIST
2912 "
2913
2914 for n in $COMPONENT_LIST; do
2915     v=$(toupper ${n%s})_LIST
2916     eval enable \$$v
2917     eval ${n}_if_any="\$$v"
2918 done
2919
2920 enable $ARCH_EXT_LIST
2921
2922 die_unknown(){
2923     echo "Unknown option \"$1\"."
2924     echo "See $0 --help for available options."
2925     exit 1
2926 }
2927
2928 print_3_columns() {
2929     cat | tr ' ' '\n' | sort | pr -r -3 -t
2930 }
2931
2932 show_list() {
2933     suffix=_$1
2934     shift
2935     echo $* | sed s/$suffix//g | print_3_columns
2936     exit 0
2937 }
2938
2939 rand_list(){
2940     IFS=', '
2941     set -- $*
2942     unset IFS
2943     for thing; do
2944         comp=${thing%:*}
2945         prob=${thing#$comp}
2946         prob=${prob#:}
2947         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2948         echo "prob ${prob:-0.5}"
2949         printf '%s\n' $comp
2950     done
2951 }
2952
2953 do_random(){
2954     action=$1
2955     shift
2956     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2957     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2958 }
2959
2960 for opt do
2961     optval="${opt#*=}"
2962     case "$opt" in
2963         --extra-ldflags=*)
2964             add_ldflags $optval
2965         ;;
2966         --extra-ldexeflags=*)
2967             add_ldexeflags $optval
2968         ;;
2969         --extra-libs=*)
2970             add_extralibs $optval
2971         ;;
2972         --disable-devices)
2973             disable $INDEV_LIST $OUTDEV_LIST
2974         ;;
2975         --enable-debug=*)
2976             debuglevel="$optval"
2977         ;;
2978         --disable-programs)
2979             disable $PROGRAM_LIST
2980         ;;
2981         --disable-everything)
2982             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2983         ;;
2984         --disable-all)
2985             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2986             disable $LIBRARY_LIST $PROGRAM_LIST doc
2987         ;;
2988         --enable-random|--disable-random)
2989             action=${opt%%-random}
2990             do_random ${action#--} $COMPONENT_LIST
2991         ;;
2992         --enable-random=*|--disable-random=*)
2993             action=${opt%%-random=*}
2994             do_random ${action#--} $optval
2995         ;;
2996         --enable-*=*|--disable-*=*)
2997             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2998             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2999             eval list=\$$(toupper $thing)_LIST
3000             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3001             list=$(filter "$name" $list)
3002             [ "$list" = "" ] && warn "Option $opt did not match anything"
3003             $action $list
3004         ;;
3005         --enable-?*|--disable-?*)
3006             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3007             if is_in $option $COMPONENT_LIST; then
3008                 test $action = disable && action=unset
3009                 eval $action \$$(toupper ${option%s})_LIST
3010             elif is_in $option $CMDLINE_SELECT; then
3011                 $action $option
3012             else
3013                 die_unknown $opt
3014             fi
3015         ;;
3016         --list-*)
3017             NAME="${opt#--list-}"
3018             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3019             NAME=${NAME%s}
3020             eval show_list $NAME \$$(toupper $NAME)_LIST
3021         ;;
3022         --help|-h) show_help
3023         ;;
3024         --fatal-warnings) enable fatal_warnings
3025         ;;
3026         *)
3027             optname="${opt%%=*}"
3028             optname="${optname#--}"
3029             optname=$(echo "$optname" | sed 's/-/_/g')
3030             if is_in $optname $CMDLINE_SET; then
3031                 eval $optname='$optval'
3032             elif is_in $optname $CMDLINE_APPEND; then
3033                 append $optname "$optval"
3034             else
3035                 die_unknown $opt
3036             fi
3037         ;;
3038     esac
3039 done
3040
3041 disabled logging && logfile=/dev/null
3042
3043 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3044 set >> $logfile
3045
3046 test -n "$valgrind" && toolchain="valgrind-memcheck"
3047
3048 case "$toolchain" in
3049     clang-asan)
3050         cc_default="clang"
3051         add_cflags  -fsanitize=address
3052         add_ldflags -fsanitize=address
3053     ;;
3054     clang-tsan)
3055         cc_default="clang"
3056         add_cflags  -fsanitize=thread -pie
3057         add_ldflags -fsanitize=thread -pie
3058     ;;
3059     clang-usan)
3060         cc_default="clang"
3061         add_cflags  -fsanitize=undefined
3062         add_ldflags -fsanitize=undefined
3063     ;;
3064     gcc-asan)
3065         cc_default="gcc"
3066         add_cflags  -fsanitize=address
3067         add_ldflags -fsanitize=address
3068     ;;
3069     gcc-tsan)
3070         cc_default="gcc"
3071         add_cflags  -fsanitize=thread -pie -fPIC
3072         add_ldflags -fsanitize=thread -pie -fPIC
3073     ;;
3074     gcc-usan)
3075         cc_default="gcc"
3076         add_cflags  -fsanitize=undefined
3077         add_ldflags -fsanitize=undefined
3078     ;;
3079     valgrind-massif)
3080         target_exec_default=${valgrind:-"valgrind"}
3081         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"
3082     ;;
3083     valgrind-memcheck)
3084         target_exec_default=${valgrind:-"valgrind"}
3085         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3086     ;;
3087     msvc)
3088         # Check whether the current MSVC version needs the C99 converter.
3089         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3090         # support enough of C99 to build ffmpeg. Default to the new
3091         # behaviour if the regexp was unable to match anything, since this
3092         # successfully parses the version number of existing supported
3093         # versions that require the converter (MSVC 2010 and 2012).
3094         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3095         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3096             cc_default="cl"
3097         else
3098             cc_default="c99wrap cl"
3099         fi
3100         ld_default="link"
3101         nm_default="dumpbin -symbols"
3102         ar_default="lib"
3103         target_os_default="win32"
3104         # Use a relative path for TMPDIR. This makes sure all the
3105         # ffconf temp files are written with a relative path, avoiding
3106         # issues with msys/win32 path conversion for MSVC parameters
3107         # such as -Fo<file> or -out:<file>.
3108         TMPDIR=.
3109     ;;
3110     icl)
3111         cc_default="icl"
3112         ld_default="xilink"
3113         nm_default="dumpbin -symbols"
3114         ar_default="xilib"
3115         target_os_default="win32"
3116         TMPDIR=.
3117     ;;
3118     gcov)
3119         add_cflags  -fprofile-arcs -ftest-coverage
3120         add_ldflags -fprofile-arcs -ftest-coverage
3121     ;;
3122     hardened)
3123         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3124         add_cflags   -fno-strict-overflow -fstack-protector-all
3125         add_ldflags  -Wl,-z,relro -Wl,-z,now
3126     ;;
3127     ?*)
3128         die "Unknown toolchain $toolchain"
3129     ;;
3130 esac
3131
3132 test -n "$cross_prefix" && enable cross_compile
3133
3134 if enabled cross_compile; then
3135     test -n "$arch" && test -n "$target_os" ||
3136         die "Must specify target arch and OS when cross-compiling"
3137 fi
3138
3139 ar_default="${cross_prefix}${ar_default}"
3140 cc_default="${cross_prefix}${cc_default}"
3141 cxx_default="${cross_prefix}${cxx_default}"
3142 nm_default="${cross_prefix}${nm_default}"
3143 pkg_config_default="${cross_prefix}${pkg_config_default}"
3144 ranlib_default="${cross_prefix}${ranlib_default}"
3145 strip_default="${cross_prefix}${strip_default}"
3146 windres_default="${cross_prefix}${windres_default}"
3147
3148 sysinclude_default="${sysroot}/usr/include"
3149
3150 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3151     target_exec target_os yasmexe
3152 enabled cross_compile || host_cc_default=$cc
3153 set_default host_cc
3154
3155 pkg_config_fail_message=""
3156 if ! $pkg_config --version >/dev/null 2>&1; then
3157     warn "$pkg_config not found, library detection may fail."
3158     pkg_config=false
3159 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3160     pkg_config_fail_message="
3161 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3162 fi
3163
3164 if test $doxygen != $doxygen_default && \
3165   ! $doxygen --version >/dev/null 2>&1; then
3166     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3167 fi
3168
3169 exesuf() {
3170     case $1 in
3171         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3172     esac
3173 }
3174
3175 EXESUF=$(exesuf $target_os)
3176 HOSTEXESUF=$(exesuf $host_os)
3177
3178 # set temporary file name
3179 : ${TMPDIR:=$TEMPDIR}
3180 : ${TMPDIR:=$TMP}
3181 : ${TMPDIR:=/tmp}
3182
3183 if [ -n "$tempprefix" ] ; then
3184     mktemp(){
3185         echo $tempprefix.${HOSTNAME}.${UID}
3186     }
3187 elif ! check_cmd mktemp -u XXXXXX; then
3188     # simple replacement for missing mktemp
3189     # NOT SAFE FOR GENERAL USE
3190     mktemp(){
3191         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3192     }
3193 fi
3194
3195 tmpfile(){
3196     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3197         (set -C; exec > $tmp) 2>/dev/null ||
3198         die "Unable to create temporary file in $TMPDIR."
3199     append TMPFILES $tmp
3200     eval $1=$tmp
3201 }
3202
3203 trap 'rm -f -- $TMPFILES' EXIT
3204
3205 tmpfile TMPASM .asm
3206 tmpfile TMPC   .c
3207 tmpfile TMPCPP .cpp
3208 tmpfile TMPE   $EXESUF
3209 tmpfile TMPH   .h
3210 tmpfile TMPM   .m
3211 tmpfile TMPO   .o
3212 tmpfile TMPS   .S
3213 tmpfile TMPSH  .sh
3214 tmpfile TMPV   .ver
3215
3216 unset -f mktemp
3217
3218 chmod +x $TMPE
3219
3220 # make sure we can execute files in $TMPDIR
3221 cat > $TMPSH 2>> $logfile <<EOF
3222 #! /bin/sh
3223 EOF
3224 chmod +x $TMPSH >> $logfile 2>&1
3225 if ! $TMPSH >> $logfile 2>&1; then
3226     cat <<EOF
3227 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3228 variable to another directory and make sure that it is not mounted noexec.
3229 EOF
3230     die "Sanity test failed."
3231 fi
3232
3233 armasm_flags(){
3234     for flag; do
3235         case $flag in
3236             # Filter out MSVC cl.exe options from cflags that shouldn't
3237             # be passed to gas-preprocessor
3238             -M[TD]*)                                            ;;
3239             *)                  echo $flag                      ;;
3240         esac
3241    done
3242 }
3243
3244 ccc_flags(){
3245     for flag; do
3246         case $flag in
3247             -std=c99)           echo -c99                       ;;
3248             -mcpu=*)            echo -arch ${flag#*=}           ;;
3249             -mieee)             echo -ieee                      ;;
3250             -O*|-fast)          echo $flag                      ;;
3251             -fno-math-errno)    echo -assume nomath_errno       ;;
3252             -g)                 echo -g3                        ;;
3253             -Wall)              echo -msg_enable level2         ;;
3254             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3255             -Wl,*)              echo $flag                      ;;
3256             -f*|-W*)                                            ;;
3257             *)                  echo $flag                      ;;
3258         esac
3259    done
3260 }
3261
3262 cparser_flags(){
3263     for flag; do
3264         case $flag in
3265             -Wno-switch)             echo -Wno-switch-enum ;;
3266             -Wno-format-zero-length) ;;
3267             -Wdisabled-optimization) ;;
3268             -Wno-pointer-sign)       echo -Wno-other ;;
3269             *)                       echo $flag ;;
3270         esac
3271     done
3272 }
3273
3274 msvc_common_flags(){
3275     for flag; do
3276         case $flag in
3277             # In addition to specifying certain flags under the compiler
3278             # specific filters, they must be specified here as well or else the
3279             # generic catch all at the bottom will print the original flag.
3280             -Wall)                ;;
3281             -std=c99)             ;;
3282             # Common flags
3283             -fomit-frame-pointer) ;;
3284             -g)                   echo -Z7 ;;
3285             -fno-math-errno)      ;;
3286             -fno-common)          ;;
3287             -fno-signed-zeros)    ;;
3288             -fPIC)                ;;
3289             -mthumb)              ;;
3290             -march=*)             ;;
3291             -lz)                  echo zlib.lib ;;
3292             -lavifil32)           echo vfw32.lib ;;
3293             -lavicap32)           echo vfw32.lib user32.lib ;;
3294             -l*)                  echo ${flag#-l}.lib ;;
3295             -L*)                  echo -libpath:${flag#-L} ;;
3296             *)                    echo $flag ;;
3297         esac
3298     done
3299 }
3300
3301 msvc_flags(){
3302     msvc_common_flags "$@"
3303     for flag; do
3304         case $flag in
3305             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3306                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3307                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3308                                        -wd4307 \
3309                                        -wd4273 -wd4554 -wd4701 ;;
3310         esac
3311     done
3312 }
3313
3314 icl_flags(){
3315     msvc_common_flags "$@"
3316     for flag; do
3317         case $flag in
3318             # Despite what Intel's documentation says -Wall, which is supported
3319             # on Windows, does enable remarks so disable them here.
3320             -Wall)                echo $flag -Qdiag-disable:remark ;;
3321             -std=c99)             echo -Qstd=c99 ;;
3322             -flto)                echo -ipo ;;
3323         esac
3324     done
3325 }
3326
3327 icc_flags(){
3328     for flag; do
3329         case $flag in
3330             -flto)                echo -ipo ;;
3331             *)                    echo $flag ;;
3332         esac
3333     done
3334 }
3335
3336 pgi_flags(){
3337     for flag; do
3338         case $flag in
3339             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3340             -fomit-frame-pointer) echo -Mnoframe ;;
3341             -g)                   echo -gopt ;;
3342             *)                    echo $flag ;;
3343         esac
3344     done
3345 }
3346
3347 suncc_flags(){
3348     for flag; do
3349         case $flag in
3350             -march=*|-mcpu=*)
3351                 case "${flag#*=}" in
3352                     native)                   echo -xtarget=native       ;;
3353                     v9|niagara)               echo -xarch=sparc          ;;
3354                     ultrasparc)               echo -xarch=sparcvis       ;;
3355                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3356                     i586|pentium)             echo -xchip=pentium        ;;
3357                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3358                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3359                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3360                     pentium4*)          echo -xtarget=pentium4           ;;
3361                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3362                     *-sse3)             echo -xarch=sse3                 ;;
3363                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3364                     bonnell)                   echo -xarch=ssse3         ;;
3365                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3366                     westmere)                  echo -xtarget=westmere    ;;
3367                     silvermont)                echo -xarch=sse4_2        ;;
3368                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3369                     core-avx*|ivybridge|haswell|broadwell)
3370                                                echo -xarch=avx           ;;
3371                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3372                     btver1)                    echo -xarch=amdsse4a      ;;
3373                     btver2|bdver*)             echo -xarch=avx           ;;
3374                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3375                     k8|opteron|athlon64|athlon-fx)
3376                                                echo -xarch=sse2a         ;;
3377                     athlon*)                   echo -xarch=pentium_proa  ;;
3378                 esac
3379                 ;;
3380             -std=c99)             echo -xc99              ;;
3381             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3382             -fPIC)                echo -KPIC -xcode=pic32 ;;
3383             -W*,*)                echo $flag              ;;
3384             -f*-*|-W*|-mimpure-text)                      ;;
3385             -shared)              echo -G                 ;;
3386             *)                    echo $flag              ;;
3387         esac
3388     done
3389 }
3390
3391 tms470_flags(){
3392     for flag; do
3393         case $flag in
3394             -march=*|-mcpu=*)
3395                 case "${flag#*=}" in
3396                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3397                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3398                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3399                     armv6*|arm11*)          echo -mv=6   ;;
3400                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3401                                             echo -mv=5e  ;;
3402                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3403                 esac
3404                 ;;
3405             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3406             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3407             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3408             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3409             -msoft-float)   echo --float_support=vfplib       ;;
3410             -O[0-3]|-mf=*)  echo $flag                        ;;
3411             -g)             echo -g -mn                       ;;
3412             -pds=*)         echo $flag                        ;;
3413             -D*|-I*)        echo $flag                        ;;
3414             --gcc|--abi=*)  echo $flag                        ;;
3415             -me)            echo $flag                        ;;
3416         esac
3417     done
3418 }
3419
3420 probe_cc(){
3421     pfx=$1
3422     _cc=$2
3423
3424     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3425     unset _ld_o _ldflags _ld_lib _ld_path
3426     unset _depflags _DEPCMD _DEPFLAGS
3427     _flags_filter=echo
3428
3429     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3430         true # no-op to avoid reading stdin in following checks
3431     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3432         _type=llvm_gcc
3433         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3434         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3435         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3436         _cflags_speed='-O3'
3437         _cflags_size='-Os'
3438     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3439         _type=gcc
3440         gcc_version=$($_cc --version | head -n1)
3441         gcc_basever=$($_cc -dumpversion)
3442         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3443         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3444         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3445         if ! $_cc -dumpversion | grep -q '^2\.'; then
3446             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3447         fi
3448         _cflags_speed='-O3'
3449         _cflags_size='-Os'
3450     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3451         _type=icc
3452         _ident=$($_cc --version | head -n1)
3453         _depflags='-MMD'
3454         _cflags_speed='-O3'
3455         _cflags_size='-Os'
3456         _cflags_noopt='-O1'
3457         _flags_filter=icc_flags
3458     elif $_cc -v 2>&1 | grep -q xlc; then
3459         _type=xlc
3460         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3461         _cflags_speed='-O5'
3462         _cflags_size='-O5 -qcompact'
3463     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3464         _type=ccc
3465         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3466         _DEPFLAGS='-M'
3467         _cflags_speed='-fast'
3468         _cflags_size='-O1'
3469         _flags_filter=ccc_flags
3470     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3471         test -d "$sysroot" || die "No valid sysroot specified."
3472         _type=armcc
3473         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3474         armcc_conf="$PWD/armcc.conf"
3475         $_cc --arm_linux_configure                 \
3476              --arm_linux_config_file="$armcc_conf" \
3477              --configure_sysroot="$sysroot"        \
3478              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3479              die "Error creating armcc configuration file."
3480         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3481         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3482         as_default="${cross_prefix}gcc"
3483         _depflags='-MMD'
3484         _cflags_speed='-O3'
3485         _cflags_size='-Os'
3486     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3487         _type=tms470
3488         _ident=$($_cc -version | head -n1 | tr -s ' ')
3489         _flags='--gcc --abi=eabi -me'
3490         _cc_e='-ppl -fe=$@'
3491         _cc_o='-fe=$@'
3492         _depflags='-ppa -ppd=$(@:.o=.d)'
3493         _cflags_speed='-O3 -mf=5'
3494         _cflags_size='-O3 -mf=2'
3495         _flags_filter=tms470_flags
3496     elif $_cc -v 2>&1 | grep -q clang; then
3497         _type=clang
3498         _ident=$($_cc --version | head -n1)
3499         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3500         _cflags_speed='-O3'
3501         _cflags_size='-Os'
3502     elif $_cc -V 2>&1 | grep -q Sun; then
3503         _type=suncc
3504         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3505         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3506         _DEPFLAGS='-xM1 -xc99'
3507         _ldflags='-std=c99'
3508         _cflags_speed='-O5'
3509         _cflags_size='-O5 -xspace'
3510         _flags_filter=suncc_flags
3511     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3512         _type=pathscale
3513         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3514         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3515         _cflags_speed='-O2'
3516         _cflags_size='-Os'
3517         _flags_filter='filter_out -Wdisabled-optimization'
3518     elif $_cc -v 2>&1 | grep -q Open64; then
3519         _type=open64
3520         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3521         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3522         _cflags_speed='-O2'
3523         _cflags_size='-Os'
3524         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3525     elif $_cc -V 2>&1 | grep -q Portland; then
3526         _type=pgi
3527         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3528         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3529         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3530         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3531         _cflags_noopt="-O"
3532         _flags_filter=pgi_flags
3533     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3534         _type=armasm
3535         _ident=$($_cc | head -n1)
3536         # 4509: "This form of conditional instruction is deprecated"
3537         _flags="-nologo -ignore 4509"
3538         _flags_filter=armasm_flags
3539     elif $_cc 2>&1 | grep -q Intel; then
3540         _type=icl
3541         _ident=$($cc 2>&1 | head -n1)
3542         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3543         # Not only is O3 broken on 13.x+ but it is slower on all previous
3544         # versions (tested) as well.
3545         _cflags_speed="-O2"
3546         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3547         if $_cc 2>&1 | grep -q Linker; then
3548             _ld_o='-out:$@'
3549         else
3550             _ld_o='-Fe$@'
3551         fi
3552         _cc_o='-Fo$@'
3553         _cc_e='-P'
3554         _flags_filter=icl_flags
3555         _ld_lib='lib%.a'
3556         _ld_path='-libpath:'
3557         # -Qdiag-error to make icl error when seeing certain unknown arguments
3558         _flags='-nologo -Qdiag-error:4044,10157'
3559         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3560         # with MSVC which enables it by default.
3561         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3562         if [ $pfx = hostcc ]; then
3563             append _cflags -Dsnprintf=_snprintf
3564         fi
3565         disable stripping
3566     elif $_cc 2>&1 | grep -q Microsoft; then
3567         _type=msvc
3568         _ident=$($cc 2>&1 | head -n1)
3569         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3570         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3571         _cflags_speed="-O2"
3572         _cflags_size="-O1"
3573         if $_cc 2>&1 | grep -q Linker; then
3574             _ld_o='-out:$@'
3575         else
3576             _ld_o='-Fe$@'
3577         fi
3578         _cc_o='-Fo$@'
3579         _cc_e='-P -Fi$@'
3580         _flags_filter=msvc_flags
3581         _ld_lib='lib%.a'
3582         _ld_path='-libpath:'
3583         _flags='-nologo'
3584         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3585         if [ $pfx = hostcc ]; then
3586             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3587                 append _cflags -Dsnprintf=_snprintf
3588             fi
3589         fi
3590         disable stripping
3591     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3592         _type=cparser
3593         _ident=$($_cc --version | head -n1)
3594         _depflags='-MMD'
3595         _cflags_speed='-O4'
3596         _cflags_size='-O2'
3597         _flags_filter=cparser_flags
3598     fi
3599
3600     eval ${pfx}_type=\$_type
3601     eval ${pfx}_ident=\$_ident
3602 }
3603
3604 set_ccvars(){
3605     eval ${1}_C=\${_cc_c-\${${1}_C}}
3606     eval ${1}_E=\${_cc_e-\${${1}_E}}
3607     eval ${1}_O=\${_cc_o-\${${1}_O}}
3608
3609     if [ -n "$_depflags" ]; then
3610         eval ${1}_DEPFLAGS=\$_depflags
3611     else
3612         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3613         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3614         eval DEP${1}FLAGS=\$_flags
3615     fi
3616 }
3617
3618 probe_cc cc "$cc"
3619 cflags_filter=$_flags_filter
3620 cflags_speed=$_cflags_speed
3621 cflags_size=$_cflags_size
3622 cflags_noopt=$_cflags_noopt
3623 add_cflags $_flags $_cflags
3624 cc_ldflags=$_ldflags
3625 set_ccvars CC
3626
3627 probe_cc hostcc "$host_cc"
3628 host_cflags_filter=$_flags_filter
3629 add_host_cflags  $_flags $_cflags
3630 set_ccvars HOSTCC
3631
3632 test -n "$cc_type" && enable $cc_type ||
3633     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3634
3635 : ${as_default:=$cc}
3636 : ${dep_cc_default:=$cc}
3637 : ${ld_default:=$cc}
3638 : ${host_ld_default:=$host_cc}
3639 set_default ar as dep_cc ld host_ld windres
3640
3641 probe_cc as "$as"
3642 asflags_filter=$_flags_filter
3643 add_asflags $_flags $_cflags
3644 set_ccvars AS
3645
3646 probe_cc ld "$ld"
3647 ldflags_filter=$_flags_filter
3648 add_ldflags $_flags $_ldflags
3649 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3650 LD_O=${_ld_o-$LD_O}
3651 LD_LIB=${_ld_lib-$LD_LIB}
3652 LD_PATH=${_ld_path-$LD_PATH}
3653
3654 probe_cc hostld "$host_ld"
3655 host_ldflags_filter=$_flags_filter
3656 add_host_ldflags $_flags $_ldflags
3657 HOSTLD_O=${_ld_o-$HOSTLD_O}
3658
3659 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3660     probe_cc depcc "$dep_cc"
3661     CCDEP=${_DEPCMD:-$DEPCMD}
3662     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3663     DEPCCFLAGS=$_flags
3664 fi
3665
3666 if $ar 2>&1 | grep -q Microsoft; then
3667     arflags="-nologo"
3668     ar_o='-out:$@'
3669 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3670     arflags="rq"
3671     ar_o='$@'
3672 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3673     arflags='-Xany -r -c'
3674     ar_o='$@'
3675 elif $ar 2>&1 | grep -q "\[D\] "; then
3676     arflags="rcD"
3677     ar_o='$@'
3678 else
3679     arflags="rc"
3680     ar_o='$@'
3681 fi
3682
3683 add_cflags $extra_cflags
3684 add_cxxflags $extra_cxxflags
3685 add_asflags $extra_cflags
3686
3687 if test -n "$sysroot"; then
3688     case "$cc_type" in
3689         gcc|llvm_gcc|clang)
3690             add_cppflags --sysroot="$sysroot"
3691             add_ldflags --sysroot="$sysroot"
3692 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3693             add_cppflags -isysroot "$sysroot"
3694             add_ldflags -isysroot "$sysroot"
3695         ;;
3696         tms470)
3697             add_cppflags -I"$sysinclude"
3698             add_ldflags  --sysroot="$sysroot"
3699         ;;
3700     esac
3701 fi
3702
3703 if test "$cpu" = host; then
3704     enabled cross_compile &&
3705         die "--cpu=host makes no sense when cross-compiling."
3706
3707     case "$cc_type" in
3708         gcc|llvm_gcc)
3709             check_native(){
3710                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3711                 sed -n "/cc1.*$1=/{
3712                             s/.*$1=\\([^ ]*\\).*/\\1/
3713                             p
3714                             q
3715                         }" $TMPE
3716             }
3717             cpu=$(check_native -march || check_native -mcpu)
3718         ;;
3719     esac
3720
3721     test "${cpu:-host}" = host &&
3722         die "--cpu=host not supported with compiler $cc"
3723 fi
3724
3725 # Deal with common $arch aliases
3726 case "$arch" in
3727     aarch64|arm64)
3728         arch="aarch64"
3729     ;;
3730     arm*|iPad*|iPhone*)
3731         arch="arm"
3732     ;;
3733     mips*|IP*)
3734         arch="mips"
3735     ;;
3736     parisc*|hppa*)
3737         arch="parisc"
3738     ;;
3739     "Power Macintosh"|ppc*|powerpc*)
3740         arch="ppc"
3741     ;;
3742     s390|s390x)
3743         arch="s390"
3744     ;;
3745     sh4|sh)
3746         arch="sh4"
3747     ;;
3748     sun4u|sparc*)
3749         arch="sparc"
3750     ;;
3751     tilegx|tile-gx)
3752         arch="tilegx"
3753     ;;
3754     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3755         arch="x86"
3756     ;;
3757 esac
3758
3759 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3760 enable $arch
3761
3762 # Add processor-specific flags
3763 if enabled aarch64; then
3764
3765     case $cpu in
3766         armv*)
3767             cpuflags="-march=$cpu"
3768         ;;
3769         *)
3770             cpuflags="-mcpu=$cpu"
3771         ;;
3772     esac
3773
3774 elif enabled alpha; then
3775
3776     cpuflags="-mcpu=$cpu"
3777
3778 elif enabled arm; then
3779
3780     check_arm_arch() {
3781         check_cpp_condition stddef.h \
3782             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3783             $cpuflags
3784     }
3785
3786     probe_arm_arch() {
3787         if   check_arm_arch 4;        then echo armv4;
3788         elif check_arm_arch 4T;       then echo armv4t;
3789         elif check_arm_arch 5;        then echo armv5;
3790         elif check_arm_arch 5E;       then echo armv5e;
3791         elif check_arm_arch 5T;       then echo armv5t;
3792         elif check_arm_arch 5TE;      then echo armv5te;
3793         elif check_arm_arch 5TEJ;     then echo armv5te;
3794         elif check_arm_arch 6;        then echo armv6;
3795         elif check_arm_arch 6J;       then echo armv6j;
3796         elif check_arm_arch 6K;       then echo armv6k;
3797         elif check_arm_arch 6Z;       then echo armv6z;
3798         elif check_arm_arch 6ZK;      then echo armv6zk;
3799         elif check_arm_arch 6T2;      then echo armv6t2;
3800         elif check_arm_arch 7;        then echo armv7;
3801         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3802         elif check_arm_arch 7S;       then echo armv7-a;
3803         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3804         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3805         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3806         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3807         fi
3808     }
3809
3810     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3811
3812     case $cpu in
3813         armv*)
3814             cpuflags="-march=$cpu"
3815             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3816         ;;
3817         *)
3818             cpuflags="-mcpu=$cpu"
3819             case $cpu in
3820                 cortex-a*)                               subarch=armv7a  ;;
3821                 cortex-r*)                               subarch=armv7r  ;;
3822                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3823                 arm11*)                                  subarch=armv6   ;;
3824                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3825                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3826                 *)                             subarch=$(probe_arm_arch) ;;
3827             esac
3828         ;;
3829     esac
3830
3831     case "$subarch" in
3832         armv5t*)    enable fast_clz                ;;
3833         armv[6-8]*)
3834             enable fast_clz
3835             disabled fast_unaligned || enable fast_unaligned
3836             ;;
3837     esac
3838
3839 elif enabled avr32; then
3840
3841     case $cpu in
3842         ap7[02]0[0-2])
3843             subarch="avr32_ap"
3844             cpuflags="-mpart=$cpu"
3845         ;;
3846         ap)
3847             subarch="avr32_ap"
3848             cpuflags="-march=$cpu"
3849         ;;
3850         uc3[ab]*)
3851             subarch="avr32_uc"
3852             cpuflags="-mcpu=$cpu"
3853         ;;
3854         uc)
3855             subarch="avr32_uc"
3856             cpuflags="-march=$cpu"
3857         ;;
3858     esac
3859
3860 elif enabled bfin; then
3861
3862     cpuflags="-mcpu=$cpu"
3863
3864 elif enabled mips; then
3865
3866     cpuflags="-march=$cpu"
3867
3868     case $cpu in
3869         24kc)
3870             disable mips32r5
3871             disable mips64r6
3872             disable mipsfpu
3873             disable mipsdspr1
3874             disable mipsdspr2
3875             disable msa
3876         ;;
3877         24kf*)
3878             disable mips32r5
3879             disable mips64r6
3880             disable mipsdspr1
3881             disable mipsdspr2
3882             disable msa
3883         ;;
3884         24kec|34kc|1004kc)
3885             disable mips32r5
3886             disable mips64r6
3887             disable mipsfpu
3888             disable mipsdspr2
3889             disable msa
3890         ;;
3891         24kef*|34kf*|1004kf*)
3892             disable mips32r5
3893             disable mips64r6
3894             disable mipsdspr2
3895             disable msa
3896         ;;
3897         74kc)
3898             disable mips32r5
3899             disable mips64r6
3900             disable mipsfpu
3901             disable msa
3902         ;;
3903         74kf)
3904             disable mips32r5
3905             disable mips64r6
3906             disable msa
3907         ;;
3908         p5600)
3909             disable mips64r6
3910             disable mipsdspr1
3911             disable mipsdspr2
3912
3913             check_cflags "-mtune=p5600"
3914         ;;
3915         i6400)
3916             disable mips32r5
3917             disable mipsdspr1
3918             disable mipsdspr2
3919             disable mipsfpu
3920
3921             check_cflags "-mtune=i6400 -mabi=64"
3922             check_ldflags "-mabi=64"
3923         ;;
3924         loongson3*)
3925             enable mipsfpu
3926             disable mips32r2
3927             disable mips32r5
3928             disable mips64r6
3929             disable mipsdspr1
3930             disable mipsdspr2
3931             disable msa
3932             enable local_aligned_8 local_aligned_16
3933             enable simd_align_16
3934             enable fast_64bit
3935             enable fast_clz
3936             enable fast_cmov
3937             enable fast_unaligned
3938             disable aligned_stack
3939             cpuflags="-march=$cpu"
3940         ;;
3941         generic)
3942             disable mips32r5
3943             disable mips64r6
3944             disable msa
3945         ;;
3946     esac
3947
3948 elif enabled ppc; then
3949
3950     disable ldbrx
3951     disable vsx
3952
3953     case $(tolower $cpu) in
3954         601|ppc601|powerpc601)
3955             cpuflags="-mcpu=601"
3956             disable altivec
3957         ;;
3958         603*|ppc603*|powerpc603*)
3959             cpuflags="-mcpu=603"
3960             disable altivec
3961         ;;
3962         604*|ppc604*|powerpc604*)
3963             cpuflags="-mcpu=604"
3964             disable altivec
3965         ;;
3966         g3|75*|ppc75*|powerpc75*)
3967             cpuflags="-mcpu=750"
3968             disable altivec
3969         ;;
3970         g4|745*|ppc745*|powerpc745*)
3971             cpuflags="-mcpu=7450"
3972         ;;
3973         74*|ppc74*|powerpc74*)
3974             cpuflags="-mcpu=7400"
3975         ;;
3976         g5|970|ppc970|powerpc970)
3977             cpuflags="-mcpu=970"
3978         ;;
3979         power[3-8]*)
3980             cpuflags="-mcpu=$cpu"
3981         ;;
3982         cell)
3983             cpuflags="-mcpu=cell"
3984             enable ldbrx
3985         ;;
3986         e500mc)
3987             cpuflags="-mcpu=e500mc"
3988             disable altivec
3989         ;;
3990         e500v2)
3991             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3992             disable altivec
3993             disable dcbzl
3994         ;;
3995         e500)
3996             cpuflags="-mcpu=8540 -mhard-float"
3997             disable altivec
3998             disable dcbzl
3999         ;;
4000     esac
4001
4002 elif enabled sparc; then
4003
4004     case $cpu in
4005         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4006             cpuflags="-mcpu=$cpu"
4007         ;;
4008         ultrasparc*|niagara[234])
4009             cpuflags="-mcpu=$cpu"
4010         ;;
4011     esac
4012
4013 elif enabled x86; then
4014
4015     case $cpu in
4016         i[345]86|pentium)
4017             cpuflags="-march=$cpu"
4018             disable i686
4019             disable mmx
4020         ;;
4021         # targets that do NOT support nopl and conditional mov (cmov)
4022         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4023             cpuflags="-march=$cpu"
4024             disable i686
4025         ;;
4026         # targets that do support nopl and conditional mov (cmov)
4027         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4028         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4029             cpuflags="-march=$cpu"
4030             enable i686
4031             enable fast_cmov
4032         ;;
4033         # targets that do support conditional mov but on which it's slow
4034         pentium4|pentium4m|prescott|nocona)
4035             cpuflags="-march=$cpu"
4036             enable i686
4037             disable fast_cmov
4038         ;;
4039     esac
4040
4041 fi
4042
4043 if [ "$cpu" != generic ]; then
4044     add_cflags  $cpuflags
4045     add_asflags $cpuflags
4046 fi
4047
4048 # compiler sanity check
4049 check_exec <<EOF
4050 int main(void){ return 0; }
4051 EOF
4052 if test "$?" != 0; then
4053     echo "$cc is unable to create an executable file."
4054     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4055         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4056         echo "Only do this if you know what cross compiling means."
4057     fi
4058     die "C compiler test failed."
4059 fi
4060
4061 add_cppflags -D_ISOC99_SOURCE
4062 add_cxxflags -D__STDC_CONSTANT_MACROS
4063 check_cflags -std=c99
4064 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4065 #include <stdlib.h>
4066 EOF
4067 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4068 #include <stdlib.h>
4069 EOF
4070
4071 add_host_cppflags -D_ISOC99_SOURCE
4072 check_host_cflags -std=c99
4073 check_host_cflags -Wall
4074 check_host_cflags -O3
4075
4076 check_64bit(){
4077     arch32=$1
4078     arch64=$2
4079     expr=$3
4080     check_code cc "" "int test[2*($expr) - 1]" &&
4081         subarch=$arch64 || subarch=$arch32
4082 }
4083
4084 case "$arch" in
4085     aarch64|alpha|ia64)
4086         spic=$shared
4087     ;;
4088     mips)
4089         check_64bit mips mips64 '_MIPS_SIM > 1'
4090         spic=$shared
4091     ;;
4092     parisc)
4093         check_64bit parisc parisc64 'sizeof(void *) > 4'
4094         spic=$shared
4095     ;;
4096     ppc)
4097         check_64bit ppc ppc64 'sizeof(void *) > 4'
4098         spic=$shared
4099     ;;
4100     s390)
4101         check_64bit s390 s390x 'sizeof(void *) > 4'
4102         spic=$shared
4103     ;;
4104     sparc)
4105         check_64bit sparc sparc64 'sizeof(void *) > 4'
4106         spic=$shared
4107     ;;
4108     x86)
4109         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4110         # Treat x32 as x64 for now. Note it also needs spic=$shared
4111         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4112             subarch=x86_64
4113         if test "$subarch" = "x86_64"; then
4114             spic=$shared
4115         fi
4116     ;;
4117     ppc)
4118         check_cc <<EOF && subarch="ppc64"
4119         int test[(int)sizeof(char*) - 7];
4120 EOF
4121     ;;
4122 esac
4123
4124 enable $subarch
4125 enabled spic && enable_weak pic
4126
4127 # OS specific
4128 case $target_os in
4129     aix)
4130         SHFLAGS=-shared
4131         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4132         enabled shared && add_ldflags -Wl,-brtl
4133         ;;
4134     android)
4135         disable symver
4136         enable section_data_rel_ro
4137         SLIB_INSTALL_NAME='$(SLIBNAME)'
4138         SLIB_INSTALL_LINKS=
4139         # soname not set on purpose
4140         SHFLAGS=-shared
4141         ;;
4142     haiku)
4143         prefix_default="/boot/common"
4144         network_extralibs="-lnetwork"
4145         host_libs=
4146         ;;
4147     sunos)
4148         SHFLAGS='-shared -Wl,-h,$$(@F)'
4149         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4150         network_extralibs="-lsocket -lnsl"
4151         add_cppflags -D__EXTENSIONS__
4152         # When using suncc to build, the Solaris linker will mark
4153         # an executable with each instruction set encountered by
4154         # the Solaris assembler.  As our libraries contain their own
4155         # guards for processor-specific code, instead suppress
4156         # generation of the HWCAPS ELF section on Solaris x86 only.
4157         enabled_all suncc x86 &&
4158             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4159             add_ldflags -Wl,-M,mapfile
4160         nm_default='nm -P -g'
4161         ;;
4162     netbsd)
4163         disable symver
4164         oss_indev_extralibs="-lossaudio"
4165         oss_outdev_extralibs="-lossaudio"
4166         enabled gcc || check_ldflags -Wl,-zmuldefs
4167         ;;
4168     openbsd|bitrig)
4169         disable symver
4170         SHFLAGS='-shared'
4171         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4172         SLIB_INSTALL_LINKS=
4173         oss_indev_extralibs="-lossaudio"
4174         oss_outdev_extralibs="-lossaudio"
4175         ;;
4176     dragonfly)
4177         disable symver
4178         ;;
4179     freebsd)
4180         ;;
4181     bsd/os)
4182         add_extralibs -lpoll -lgnugetopt
4183         strip="strip -d"
4184         ;;
4185     darwin)
4186         enabled ppc && add_asflags -force_cpusubtype_ALL
4187         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4188         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4189         strip="${strip} -x"
4190         add_ldflags -Wl,-dynamic,-search_paths_first
4191         SLIBSUF=".dylib"
4192         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4193         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4194         objformat="macho"
4195         enabled x86_64 && objformat="macho64"
4196         enabled_any pic shared x86_64 ||
4197             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4198         ;;
4199     mingw32*)
4200         if test $target_os = "mingw32ce"; then
4201             disable network
4202         else
4203             target_os=mingw32
4204         fi
4205         LIBTARGET=i386
4206         if enabled x86_64; then
4207             LIBTARGET="i386:x86-64"
4208         elif enabled arm; then
4209             LIBTARGET=arm-wince
4210         fi
4211         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4212         check_ldflags -Wl,--nxcompat
4213         check_ldflags -Wl,--dynamicbase
4214         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4215         shlibdir_default="$bindir_default"
4216         SLIBPREF=""
4217         SLIBSUF=".dll"
4218         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4219         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4220         dlltool="${cross_prefix}dlltool"
4221         if check_cmd lib.exe -list; then
4222             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4223             if enabled x86_64; then
4224                 LIBTARGET=x64
4225             fi
4226         elif check_cmd $dlltool --version; then
4227             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4228         fi
4229         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4230         SLIB_INSTALL_LINKS=
4231         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4232         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4233         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4234         objformat="win32"
4235         ranlib=:
4236         enable dos_paths
4237         ;;
4238     win32|win64)
4239         disable symver
4240         if enabled shared; then
4241             # Link to the import library instead of the normal static library
4242             # for shared libs.
4243             LD_LIB='%.lib'
4244             # Cannot build both shared and static libs with MSVC or icl.
4245             disable static
4246         fi
4247         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4248         shlibdir_default="$bindir_default"
4249         SLIBPREF=""
4250         SLIBSUF=".dll"
4251         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4252         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4253         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4254         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4255         SLIB_INSTALL_LINKS=
4256         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4257         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4258         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4259         objformat="win32"
4260         ranlib=:
4261         enable dos_paths
4262         ;;
4263     cygwin*)
4264         target_os=cygwin
4265         shlibdir_default="$bindir_default"
4266         SLIBPREF="cyg"
4267         SLIBSUF=".dll"
4268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4270         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4271         SLIB_INSTALL_LINKS=
4272         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4273         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4274         objformat="win32"
4275         enable dos_paths
4276         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4277         ;;
4278     *-dos|freedos|opendos)
4279         network_extralibs="-lsocket"
4280         objformat="coff"
4281         enable dos_paths
4282         add_cppflags -U__STRICT_ANSI__
4283         ;;
4284     linux)
4285         enable dv1394
4286         enable section_data_rel_ro
4287         ;;
4288     irix*)
4289         target_os=irix
4290         ranlib="echo ignoring ranlib"
4291         ;;
4292     os/2*)
4293         strip="lxlite -CS"
4294         ln_s="cp -f"
4295         objformat="aout"
4296         add_cppflags -D_GNU_SOURCE
4297         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4298         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4299         LIBSUF="_s.a"
4300         SLIBPREF=""
4301         SLIBSUF=".dll"
4302         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4303         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4304         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4305             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4306             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4307             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4308             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4309             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4310         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4311             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4312         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4313         enable dos_paths
4314         enable_weak os2threads
4315         ;;
4316     gnu/kfreebsd)
4317         add_cppflags -D_BSD_SOURCE
4318         ;;
4319     gnu)
4320         ;;
4321     qnx)
4322         add_cppflags -D_QNX_SOURCE
4323         network_extralibs="-lsocket"
4324         ;;
4325     symbian)
4326         SLIBSUF=".dll"
4327         enable dos_paths
4328         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4329         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4330         add_ldflags -Wl,--target1-abs,--no-undefined \
4331                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4332                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4333         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4334                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4335                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4336         ;;
4337     osf1)
4338         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4339         ;;
4340     minix)
4341         ;;
4342     plan9)
4343         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4344                      -D_REENTRANT_SOURCE        \
4345                      -D_RESEARCH_SOURCE         \
4346                      -DFD_SETSIZE=96            \
4347                      -DHAVE_SOCK_OPTS
4348         add_compat strtod.o strtod=avpriv_strtod
4349         network_extralibs='-lbsd'
4350         exeobjs=compat/plan9/main.o
4351         disable ffserver
4352         cp_f='cp'
4353         ;;
4354     none)
4355         ;;
4356     *)
4357         die "Unknown OS '$target_os'."
4358         ;;
4359 esac
4360
4361 # determine libc flavour
4362
4363 probe_libc(){
4364     pfx=$1
4365     pfx_no_=${pfx%_}
4366     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4367     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4368         eval ${pfx}libc_type=uclibc
4369         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4370     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4371         eval ${pfx}libc_type=glibc
4372         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4373     # MinGW headers can be installed on Cygwin, so check for newlib first.
4374     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4375         eval ${pfx}libc_type=newlib
4376         add_${pfx}cppflags -U__STRICT_ANSI__
4377     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4378     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4379         eval ${pfx}libc_type=mingw64
4380         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4381             add_compat msvcrt/snprintf.o
4382             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4383         fi
4384         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4385         eval test \$${pfx_no_}cc_type = "gcc" &&
4386             add_${pfx}cppflags -D__printf__=__gnu_printf__
4387     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4388          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4389         eval ${pfx}libc_type=mingw32
4390         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4391             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4392             die "ERROR: MinGW32 runtime version must be >= 3.15."
4393         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4394         eval test \$${pfx_no_}cc_type = "gcc" &&
4395             add_${pfx}cppflags -D__printf__=__gnu_printf__
4396     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4397         eval ${pfx}libc_type=msvcrt
4398         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4399         # 0x601 by default unless something else is set by the user.
4400         # This can easily lead to us detecting functions only present
4401         # in such new versions and producing binaries requiring windows 7.0.
4402         # Therefore explicitly set the default to XP unless the user has
4403         # set something else on the command line.
4404         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4405             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4406     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4407         eval ${pfx}libc_type=klibc
4408     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4409         eval ${pfx}libc_type=bionic
4410     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4411         eval ${pfx}libc_type=solaris
4412         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4413     fi
4414     check_${pfx}cc <<EOF
4415 #include <time.h>
4416 void *v = localtime_r;
4417 EOF
4418 test "$?" != 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
4419 #include <time.h>
4420 void *v = localtime_r;
4421 EOF
4422
4423 }
4424
4425 probe_libc
4426 test -n "$libc_type" && enable libc_$libc_type
4427 probe_libc host_
4428 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4429
4430 case $libc_type in
4431     bionic)
4432         add_compat strtod.o strtod=avpriv_strtod
4433         ;;
4434     msvcrt)
4435         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4436             add_compat strtod.o strtod=avpriv_strtod
4437             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4438                                          _snprintf=avpriv_snprintf  \
4439                                          vsnprintf=avpriv_vsnprintf
4440         fi
4441         ;;
4442 esac
4443
4444 # hacks for compiler/libc/os combinations
4445
4446 if enabled_all tms470 libc_glibc; then
4447     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4448     add_cppflags -D__USER_LABEL_PREFIX__=
4449     add_cppflags -D__builtin_memset=memset
4450     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4451     add_cflags   -pds=48    # incompatible redefinition of macro
4452 fi
4453
4454 if enabled_all ccc libc_glibc; then
4455     add_ldflags -Wl,-z,now  # calls to libots crash without this
4456 fi
4457
4458 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4459     add_cppflags '-I\$(SRC_PATH)/compat/float'
4460
4461 esc(){
4462     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4463 }
4464
4465 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4466
4467 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4468
4469 set_default libdir
4470 : ${shlibdir_default:="$libdir"}
4471
4472 set_default $PATHS_LIST
4473 set_default nm
4474
4475 # we need to build at least one lib type
4476 if ! enabled_any static shared; then
4477     cat <<EOF
4478 At least one library type must be built.
4479 Specify --enable-static to build the static libraries or --enable-shared to
4480 build the shared libraries as well. To only build the shared libraries specify
4481 --disable-static in addition to --enable-shared.
4482 EOF
4483     exit 1;
4484 fi
4485
4486 die_license_disabled() {
4487     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4488 }
4489
4490 die_license_disabled_gpl() {
4491     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4492 }
4493
4494 die_license_disabled gpl frei0r
4495 die_license_disabled gpl libcdio
4496 die_license_disabled gpl libsmbclient
4497 die_license_disabled gpl libutvideo
4498 die_license_disabled gpl libvidstab
4499 die_license_disabled gpl libx264
4500 die_license_disabled gpl libx265
4501 die_license_disabled gpl libxavs
4502 die_license_disabled gpl libxvid
4503 die_license_disabled gpl libzvbi
4504 die_license_disabled gpl x11grab
4505
4506 die_license_disabled nonfree libaacplus
4507 die_license_disabled nonfree libfaac
4508 die_license_disabled nonfree nvenc
4509 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4510 enabled gpl && die_license_disabled_gpl nonfree openssl
4511
4512 die_license_disabled version3 libopencore_amrnb
4513 die_license_disabled version3 libopencore_amrwb
4514 die_license_disabled version3 libsmbclient
4515 die_license_disabled version3 libvo_aacenc
4516 die_license_disabled version3 libvo_amrwbenc
4517
4518 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4519
4520 disabled optimizations || check_cflags -fomit-frame-pointer
4521
4522 enable_weak_pic() {
4523     disabled pic && return
4524     enable pic
4525     add_cppflags -DPIC
4526     case "$target_os" in
4527     mingw*|cygwin*)
4528         ;;
4529     *)
4530         add_cflags -fPIC
4531         ;;
4532     esac
4533     add_asflags  -fPIC
4534 }
4535
4536 enabled pic && enable_weak_pic
4537
4538 check_cc <<EOF || die "Symbol mangling check failed."
4539 int ff_extern;
4540 EOF
4541 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4542 extern_prefix=${sym%%ff_extern*}
4543
4544 check_cc <<EOF && enable_weak inline_asm
4545 void foo(void) { __asm__ volatile ("" ::); }
4546 EOF
4547
4548 _restrict=
4549 for restrict_keyword in restrict __restrict__ __restrict; do
4550     check_cc <<EOF && _restrict=$restrict_keyword && break
4551 void foo(char * $restrict_keyword p);
4552 EOF
4553 done
4554
4555 check_cc <<EOF && enable pragma_deprecated
4556 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4557 EOF
4558
4559 check_cc <<EOF && enable attribute_packed
4560 struct { int x; } __attribute__((packed)) x;
4561 EOF
4562
4563 check_cc <<EOF && enable attribute_may_alias
4564 union { int x; } __attribute__((may_alias)) x;
4565 EOF
4566
4567 check_cc <<EOF || die "endian test failed"
4568 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4569 EOF
4570 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4571
4572 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4573     if ! enabled bigendian && enabled altivec ;then
4574         enable vsx
4575     fi
4576 fi
4577
4578 check_gas() {
4579     log "check_gas using '$as' as AS"
4580     # :vararg is used on aarch64, arm and ppc altivec
4581     check_as <<EOF || return 1
4582 .macro m n, y:vararg=0
4583 \n: .int \y
4584 .endm
4585 m x
4586 EOF
4587     # .altmacro is only used in arm asm
4588     ! enabled arm || check_as <<EOF || return 1
4589 .altmacro
4590 EOF
4591     enable gnu_as
4592     return 0
4593 }
4594
4595 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4596     nogas=:
4597     enabled_any arm aarch64 && nogas=die
4598     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4599     as_noop=-v
4600
4601     case $as_type in
4602         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4603         gcc)  gaspp_as_type=gas ;;
4604         *)    gaspp_as_type=$as_type ;;
4605     esac
4606
4607     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4608
4609     test "${as#*gas-preprocessor.pl}" != "$as" ||
4610     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4611         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4612
4613     if ! check_gas ; then
4614         as=${gas:=$as}
4615         check_gas || \
4616             $nogas "GNU assembler not found, install/update gas-preprocessor"
4617     fi
4618
4619     check_as <<EOF && enable as_func
4620 .func test
4621 .endfunc
4622 EOF
4623 fi
4624
4625 check_inline_asm inline_asm_labels '"1:\n"'
4626
4627 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4628
4629 if enabled aarch64; then
4630     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4631     # internal assembler in clang 3.3 does not support this instruction
4632     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4633     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4634
4635     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4636
4637 elif enabled alpha; then
4638
4639     check_cflags -mieee
4640
4641 elif enabled arm; then
4642
4643     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4644 float func(float a, float b){ return a+b; }
4645 EOF
4646
4647     enabled thumb && check_cflags -mthumb || check_cflags -marm
4648
4649     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4650         enable vfp_args
4651     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4652         case "${cross_prefix:-$cc}" in
4653             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4654             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4655 __asm__ (".eabi_attribute 28, 1");
4656 int main(void) { return 0; }
4657 EOF
4658         esac
4659         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4660     fi
4661
4662     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4663     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4664     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4665     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4666     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4667     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4668     enabled setend  && check_insn setend  'setend be'
4669
4670     [ $target_os = linux ] || [ $target_os = android ] ||
4671         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4672             $ARCH_EXT_LIST_ARM
4673
4674     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4675
4676     check_as <<EOF && enable as_dn_directive
4677 ra .dn d0.i16
4678 .unreq ra
4679 EOF
4680
4681     # llvm's integrated assembler supports .object_arch from llvm 3.5
4682     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4683 .object_arch armv4
4684 EOF
4685
4686     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4687
4688 elif enabled mips; then
4689
4690     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4691
4692     # Enable minimum ISA based on selected options
4693     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4694         add_cflags "-mips64r2"
4695         add_asflags "-mips64r2"
4696     elif enabled mips64 && enabled mipsfpu; then
4697         add_cflags "-mips64"
4698         add_asflags "-mips64"
4699     elif enabled mipsdspr1 || enabled mipsdspr2; then
4700         add_cflags "-mips32r2 -mfp32"
4701         add_asflags "-mips32r2 -mfp32"
4702     elif enabled mips32r5 || enabled mips64r6; then
4703         check_cflags "-mfp64"
4704         check_ldflags "-mfp64"
4705     fi
4706
4707     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4708      check_ldflags "-mips32r5" &&
4709      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4710     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4711      check_ldflags "-mips64r6" &&
4712      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4713     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4714      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4715     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4716      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4717     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4718      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4719     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4720      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4721     enabled loongson3 && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4722         check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4723
4724     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4725     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4726     enabled msa && add_asflags "-mmsa"
4727
4728 elif enabled parisc; then
4729
4730     if enabled gcc; then
4731         case $($cc -dumpversion) in
4732             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4733         esac
4734     fi
4735
4736 elif enabled ppc; then
4737
4738     enable local_aligned_8 local_aligned_16 local_aligned_32
4739
4740     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4741     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4742     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4743     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4744
4745     # AltiVec flags: The FSF version of GCC differs from the Apple version
4746     if enabled altivec; then
4747         check_cflags -maltivec -mabi=altivec &&
4748         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4749         check_cflags -faltivec
4750
4751         # check if our compiler supports Motorola AltiVec C API
4752         check_cc <<EOF || disable altivec
4753 $inc_altivec_h
4754 int main(void) {
4755     vector signed int v1 = (vector signed int) { 0 };
4756     vector signed int v2 = (vector signed int) { 1 };
4757     v1 = vec_add(v1, v2);
4758     return 0;
4759 }
4760 EOF
4761
4762         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4763     fi
4764
4765     if enabled vsx; then
4766         check_cflags -mvsx
4767     fi
4768 elif enabled x86; then
4769
4770     check_builtin rdtsc    intrin.h   "__rdtsc()"
4771     check_builtin mm_empty mmintrin.h "_mm_empty()"
4772
4773     enable local_aligned_8 local_aligned_16 local_aligned_32
4774
4775     # check whether EBP is available on x86
4776     # As 'i' is stored on the stack, this program will crash
4777     # if the base pointer is used to access it because the
4778     # base pointer is cleared in the inline assembly code.
4779     check_exec_crash <<EOF && enable ebp_available
4780 volatile int i=0;
4781 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4782 return i;
4783 EOF
4784
4785     # check whether EBX is available on x86
4786     check_inline_asm ebx_available '""::"b"(0)' &&
4787         check_inline_asm ebx_available '"":::"%ebx"'
4788
4789     # check whether xmm clobbers are supported
4790     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4791
4792     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4793         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4794
4795     # check whether binutils is new enough to compile SSSE3/MMXEXT
4796     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4797     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4798
4799     if ! disabled_any asm mmx yasm; then
4800         if check_cmd $yasmexe --version; then
4801             enabled x86_64 && yasm_extra="-m amd64"
4802             yasm_debug="-g dwarf2"
4803         elif check_cmd nasm -v; then
4804             yasmexe=nasm
4805             yasm_debug="-g -F dwarf"
4806             if enabled x86_64; then
4807                 case "$objformat" in
4808                     elf)   objformat=elf64 ;;
4809                     win32) objformat=win64 ;;
4810                 esac
4811             fi
4812         fi
4813
4814         YASMFLAGS="-f $objformat $yasm_extra"
4815         enabled pic               && append YASMFLAGS "-DPIC"
4816         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4817         case "$objformat" in
4818             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4819         esac
4820
4821         check_yasm "movbe ecx, [5]" && enable yasm ||
4822             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4823         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4824         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4825         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4826         check_yasm "CPU amdnop" || disable cpunop
4827     fi
4828
4829     case "$cpu" in
4830         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4831             disable fast_clz
4832         ;;
4833     esac
4834
4835 fi
4836
4837 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4838
4839 check_ldflags -Wl,--as-needed
4840 check_ldflags -Wl,-z,noexecstack
4841
4842 if check_func dlopen; then
4843     ldl=
4844 elif check_func dlopen -ldl; then
4845     ldl=-ldl
4846 fi
4847
4848 frei0r_filter_extralibs='$ldl'
4849 frei0r_src_filter_extralibs='$ldl'
4850 ladspa_filter_extralibs='$ldl'
4851 nvenc_encoder_extralibs='$ldl'
4852
4853 if ! disabled network; then
4854     check_func getaddrinfo $network_extralibs
4855     check_func getservbyport $network_extralibs
4856     check_func inet_aton $network_extralibs
4857
4858     check_type netdb.h "struct addrinfo"
4859     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4860     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4861     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4862     check_type poll.h "struct pollfd"
4863     check_type netinet/sctp.h "struct sctp_event_subscribe"
4864     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4865     check_type netinet/in.h "struct sockaddr_in6"
4866     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4867     check_type "sys/types.h sys/socket.h" socklen_t
4868
4869     # Prefer arpa/inet.h over winsock2
4870     if check_header arpa/inet.h ; then
4871         check_func closesocket
4872     elif check_header winsock2.h ; then
4873         check_func_headers winsock2.h closesocket -lws2 &&
4874             network_extralibs="-lws2" ||
4875         { check_func_headers winsock2.h closesocket -lws2_32 &&
4876             network_extralibs="-lws2_32"; } || disable winsock2_h network
4877         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4878
4879         check_type ws2tcpip.h socklen_t
4880         check_type ws2tcpip.h "struct addrinfo"
4881         check_type ws2tcpip.h "struct group_source_req"
4882         check_type ws2tcpip.h "struct ip_mreq_source"
4883         check_type ws2tcpip.h "struct ipv6_mreq"
4884         check_type winsock2.h "struct pollfd"
4885         check_struct winsock2.h "struct sockaddr" sa_len
4886         check_type ws2tcpip.h "struct sockaddr_in6"
4887         check_type ws2tcpip.h "struct sockaddr_storage"
4888     else
4889         disable network
4890     fi
4891 fi
4892
4893 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4894 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4895 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4896 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4897 check_builtin sarestart signal.h "SA_RESTART"
4898 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4899
4900 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4901 check_func  ${malloc_prefix}memalign            && enable memalign
4902 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4903
4904 check_func  access
4905 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4906 check_func  fcntl
4907 check_func  fork
4908 check_func  gethrtime
4909 check_func  getopt
4910 check_func  getrusage
4911 check_func  gettimeofday
4912 check_func  gmtime_r
4913 check_func  isatty
4914 check_func  localtime_r
4915 check_func  mach_absolute_time
4916 check_func  mkstemp
4917 check_func  mmap
4918 check_func  mprotect
4919 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4920 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4921 check_func  sched_getaffinity
4922 check_func  setrlimit
4923 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4924 check_func  strerror_r
4925 check_func  sysconf
4926 check_func  sysctl
4927 check_func  usleep
4928
4929 check_func_headers conio.h kbhit
4930 check_func_headers io.h setmode
4931 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4932 check_func_headers stdlib.h getenv
4933
4934 check_func_headers windows.h CoTaskMemFree -lole32
4935 check_func_headers windows.h GetProcessAffinityMask
4936 check_func_headers windows.h GetProcessTimes
4937 check_func_headers windows.h GetSystemTimeAsFileTime
4938 check_func_headers windows.h MapViewOfFile
4939 check_func_headers windows.h PeekNamedPipe
4940 check_func_headers windows.h SetConsoleTextAttribute
4941 check_func_headers windows.h Sleep
4942 check_func_headers windows.h VirtualAlloc
4943 check_struct windows.h "CONDITION_VARIABLE" Ptr
4944 check_func_headers glob.h glob
4945 enabled xlib &&
4946     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4947
4948 check_header direct.h
4949 check_header dlfcn.h
4950 check_header dxva.h
4951 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4952 check_header io.h
4953 check_header libcrystalhd/libcrystalhd_if.h
4954 check_header mach/mach_time.h
4955 check_header malloc.h
4956 check_header net/udplite.h
4957 check_header poll.h
4958 check_header sys/mman.h
4959 check_header sys/param.h
4960 check_header sys/resource.h
4961 check_header sys/select.h
4962 check_header sys/time.h
4963 check_header sys/un.h
4964 check_header termios.h
4965 check_header unistd.h
4966 check_header valgrind/valgrind.h
4967 check_header vdpau/vdpau.h
4968 check_header vdpau/vdpau_x11.h
4969 check_header VideoDecodeAcceleration/VDADecoder.h
4970 check_header windows.h
4971 check_header X11/extensions/XvMClib.h
4972 check_header asm/types.h
4973
4974 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4975 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4976 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4977
4978 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4979
4980 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4981
4982 if ! disabled w32threads && ! enabled pthreads; then
4983     check_func_headers "windows.h process.h" _beginthreadex &&
4984         enable w32threads || disable w32threads
4985 fi
4986
4987 # check for some common methods of building with pthread support
4988 # do this before the optional library checks as some of them require pthreads
4989 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4990     enable pthreads
4991     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4992         add_cflags -pthread
4993         add_extralibs -pthread
4994     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4995         add_cflags -pthreads
4996         add_extralibs -pthreads
4997     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4998         add_cflags -ldl -pthread
4999         add_extralibs -ldl -pthread
5000     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5001         add_extralibs -lpthreadGC2
5002     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5003         :
5004     elif ! check_func pthread_join && ! check_func pthread_create; then
5005         disable pthreads
5006     fi
5007     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5008 fi
5009
5010
5011 if enabled pthreads; then
5012   check_func pthread_cancel
5013 fi
5014
5015 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5016 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5017 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5018
5019 check_lib math.h sin -lm && LIBM="-lm"
5020 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5021
5022 atan2f_args=2
5023 ldexpf_args=2
5024 powf_args=2
5025
5026 for func in $MATH_FUNCS; do
5027     eval check_mathfunc $func \${${func}_args:-1}
5028 done
5029
5030 # these are off by default, so fail if requested and not available
5031 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5032 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5033                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5034 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5035                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5036                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5037 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5038 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5039 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5040 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5041 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5042 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5043 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5044 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5045 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5046 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5047                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5048                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5049 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5050 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5051 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5052 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5053 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"
5054 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5055 enabled fontconfig        && enable libfontconfig
5056 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5057 enabled libfreetype       && require_libfreetype
5058 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5059 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5060 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5061                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5062                                done || die "ERROR: libgsm not found"; }
5063 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5064 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5065 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5066 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5067 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5068 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5069 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5070 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5071 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5072 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5073                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5074                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5075                                die "ERROR: libopenjpeg not found"; }
5076 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5077 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5078 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5079 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5080 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5081 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5082 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5083                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5084 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5085 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5086 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5087 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5088     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5089     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5090 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5091 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5092                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5093                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5094 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5095 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5096 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5097 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5098 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5099 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5100 enabled libvpx            && {
5101     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5102                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5103     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 ||
5104                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5105     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5106     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; } }
5107 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5108 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5109 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5110                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5111                                  warn "using libx264 without pkg-config"; } } &&
5112                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5113                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5114 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5115                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
5116                                die "ERROR: libx265 version must be >= 17."; }
5117 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5118 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5119 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5120 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5121 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5122                                 { ! enabled cross_compile && {
5123                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5124                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5125                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5126                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5127                                die "ERROR: mmal not found"; }
5128 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5129                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5130                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5131                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5132 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5133                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5134                                die "ERROR: openal not found"; } &&
5135                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5136                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5137 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5138                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5139                                die "ERROR: opencl not found"; } &&
5140                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5141                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5142                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5143 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5144                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5145                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5146                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5147                                die "ERROR: opengl not found."
5148                              }
5149 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5150                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5151                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5152                                die "ERROR: openssl not found"; }
5153 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5154
5155 if enabled gnutls; then
5156     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5157     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5158 fi
5159
5160 # libdc1394 check
5161 if enabled libdc1394; then
5162     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5163         enable libdc1394_2; } ||
5164     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5165         enable libdc1394_1; } ||
5166     die "ERROR: No version of libdc1394 found "
5167 fi
5168 if ! disabled sdl; then
5169     SDL_CONFIG="${cross_prefix}sdl-config"
5170     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5171         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5172         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5173         enable sdl
5174     else
5175         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5176             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5177             sdl_libs=$("${SDL_CONFIG}" --libs)
5178             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5179             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5180             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5181             enable sdl
5182         elif enabled sdl ; then
5183             die "ERROR: SDL not found"
5184         else
5185             disable sdl
5186         fi
5187     fi
5188 fi
5189 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5190
5191 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5192 enabled makeinfo && (makeinfo --version | \
5193                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5194     && enable makeinfo_html || disable makeinfo_html
5195 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5196 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5197 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5198 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5199
5200 check_header linux/fb.h
5201 check_header linux/videodev.h
5202 check_header linux/videodev2.h
5203 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5204
5205 check_header sys/videoio.h
5206 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5207
5208 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5209 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5210 # w32api 3.12 had it defined wrong
5211 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5212
5213 check_type "dshow.h" IBaseFilter
5214
5215 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5216 { check_header dev/bktr/ioctl_meteor.h &&
5217   check_header dev/bktr/ioctl_bt848.h; } ||
5218 { check_header machine/ioctl_meteor.h &&
5219   check_header machine/ioctl_bt848.h; } ||
5220 { check_header dev/video/meteor/ioctl_meteor.h &&
5221   check_header dev/video/bktr/ioctl_bt848.h; } ||
5222 check_header dev/ic/bt8xx.h
5223
5224 check_header sndio.h
5225 if check_struct sys/soundcard.h audio_buf_info bytes; then
5226     enable_safe sys/soundcard.h
5227 else
5228     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5229     #include <sys/soundcard.h>
5230     audio_buf_info abc;
5231 EOF
5232 fi
5233 check_header soundcard.h
5234
5235 enabled_any alsa_indev alsa_outdev &&
5236     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5237
5238 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5239     check_func jack_port_get_latency_range -ljack
5240
5241 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5242
5243 if enabled libcdio; then
5244     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5245     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5246     die "ERROR: No usable libcdio/cdparanoia found"
5247 fi
5248
5249 enabled xlib &&
5250     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5251
5252 if ! disabled libxcb; then
5253     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5254         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5255     } && disable x11grab && enable libxcb
5256
5257 if enabled libxcb; then
5258     disabled libxcb_shm || {
5259         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5260             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5261         } && check_header sys/shm.h && enable libxcb_shm; }
5262
5263     disabled libxcb_xfixes || {
5264         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5265             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5266         } && enable libxcb_xfixes; }
5267
5268     disabled libxcb_shape || {
5269         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5270             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5271         } && enable libxcb_shape; }
5272
5273     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5274     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5275 fi
5276 fi
5277
5278 if enabled x11grab; then
5279     enabled xlib || die "ERROR: Xlib not found"
5280     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5281     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5282 fi
5283
5284 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5285
5286 enabled dxva2api_h &&
5287     check_cc <<EOF && enable dxva2api_cobj
5288 #define _WIN32_WINNT 0x0600
5289 #define COBJMACROS
5290 #include <windows.h>
5291 #include <d3d9.h>
5292 #include <dxva2api.h>
5293 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5294 EOF
5295
5296 enabled vaapi &&
5297     check_lib va/va.h vaInitialize -lva ||
5298     disable vaapi
5299
5300 enabled vaapi && enabled xlib &&
5301     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5302     enable vaapi_x11
5303
5304 enabled vdpau &&
5305     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5306     disable vdpau
5307
5308 enabled vdpau && enabled xlib &&
5309     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5310     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5311     enable vdpau_x11
5312
5313 # Funny iconv installations are not unusual, so check it after all flags have been set
5314 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5315
5316 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5317
5318 # add some useful compiler flags if supported
5319 check_cflags -Wdeclaration-after-statement
5320 check_cflags -Wall
5321 check_cflags -Wdisabled-optimization
5322 check_cflags -Wpointer-arith
5323 check_cflags -Wredundant-decls
5324 check_cflags -Wwrite-strings
5325 check_cflags -Wtype-limits
5326 check_cflags -Wundef
5327 check_cflags -Wmissing-prototypes
5328 check_cflags -Wno-pointer-to-int-cast
5329 check_cflags -Wstrict-prototypes
5330 check_cflags -Wempty-body
5331 enabled extra_warnings && check_cflags -Winline
5332
5333 check_disable_warning(){
5334     warning_flag=-W${1#-Wno-}
5335     test_cflags $warning_flag && add_cflags $1
5336 }
5337
5338 check_disable_warning -Wno-parentheses
5339 check_disable_warning -Wno-switch
5340 check_disable_warning -Wno-format-zero-length
5341 check_disable_warning -Wno-pointer-sign
5342
5343 # add some linker flags
5344 check_ldflags -Wl,--warn-common
5345 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5346 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5347 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5348
5349 # add some strip flags
5350 # -wN '..@*' is more selective than -x, but not available everywhere.
5351 check_stripflags -wN \'..@*\' || check_stripflags -x
5352
5353 enabled neon_clobber_test &&
5354     check_ldflags -Wl,--wrap,avcodec_open2              \
5355                   -Wl,--wrap,avcodec_decode_audio4      \
5356                   -Wl,--wrap,avcodec_decode_video2      \
5357                   -Wl,--wrap,avcodec_decode_subtitle2   \
5358                   -Wl,--wrap,avcodec_encode_audio2      \
5359                   -Wl,--wrap,avcodec_encode_video2      \
5360                   -Wl,--wrap,avcodec_encode_subtitle    \
5361                   -Wl,--wrap,swr_convert                \
5362                   -Wl,--wrap,avresample_convert ||
5363     disable neon_clobber_test
5364
5365 enabled xmm_clobber_test &&
5366     check_ldflags -Wl,--wrap,avcodec_open2              \
5367                   -Wl,--wrap,avcodec_decode_audio4      \
5368                   -Wl,--wrap,avcodec_decode_video2      \
5369                   -Wl,--wrap,avcodec_decode_subtitle2   \
5370                   -Wl,--wrap,avcodec_encode_audio2      \
5371                   -Wl,--wrap,avcodec_encode_video       \
5372                   -Wl,--wrap,avcodec_encode_video2      \
5373                   -Wl,--wrap,avcodec_encode_subtitle    \
5374                   -Wl,--wrap,swr_convert                \
5375                   -Wl,--wrap,avresample_convert         \
5376                   -Wl,--wrap,sws_scale ||
5377     disable xmm_clobber_test
5378
5379 echo "X{};" > $TMPV
5380 if test_ldflags -Wl,--version-script,$TMPV; then
5381     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5382     check_cc <<EOF && enable symver_asm_label
5383 void ff_foo(void) __asm__ ("av_foo@VERSION");
5384 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5385 EOF
5386     check_cc <<EOF && enable symver_gnu_asm
5387 __asm__(".symver ff_foo,av_foo@VERSION");
5388 void ff_foo(void) {}
5389 EOF
5390 fi
5391
5392 if [ -z "$optflags" ]; then
5393     if enabled small; then
5394         optflags=$cflags_size
5395     elif enabled optimizations; then
5396         optflags=$cflags_speed
5397     else
5398         optflags=$cflags_noopt
5399     fi
5400 fi
5401
5402 check_optflags(){
5403     check_cflags "$@"
5404     enabled lto && check_ldflags "$@"
5405 }
5406
5407
5408 if enabled lto; then
5409     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5410     check_cflags  -flto
5411     check_ldflags -flto $cpuflags
5412     disable inline_asm_direct_symbol_refs
5413 fi
5414
5415 check_optflags $optflags
5416 check_optflags -fno-math-errno
5417 check_optflags -fno-signed-zeros
5418
5419 enabled ftrapv && check_cflags -ftrapv
5420
5421 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5422 int x;
5423 EOF
5424
5425
5426 if enabled icc; then
5427     # Just warnings, no remarks
5428     check_cflags -w1
5429     # -wd: Disable following warnings
5430     # 144, 167, 556: -Wno-pointer-sign
5431     # 188: enumerated type mixed with another type
5432     # 1292: attribute "foo" ignored
5433     # 1419: external declaration in primary source file
5434     # 10006: ignoring unknown option -fno-signed-zeros
5435     # 10148: ignoring unknown option -Wno-parentheses
5436     # 10156: ignoring option '-W'; no argument required
5437     # 13200: No EMMS instruction before call to function
5438     # 13203: No EMMS instruction before return from function
5439     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5440     # 11030: Warning unknown option --as-needed
5441     # 10156: ignoring option '-export'; no argument required
5442     check_ldflags -wd10156,11030
5443     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5444     enable ebp_available
5445     # The test above does not test linking
5446     enabled lto && disable symver_asm_label
5447     if enabled x86_32; then
5448         icc_version=$($cc -dumpversion)
5449         test ${icc_version%%.*} -ge 11 &&
5450             check_cflags -falign-stack=maintain-16-byte ||
5451             disable aligned_stack
5452     fi
5453 elif enabled ccc; then
5454     # disable some annoying warnings
5455     add_cflags -msg_disable bitnotint
5456     add_cflags -msg_disable mixfuncvoid
5457     add_cflags -msg_disable nonstandcast
5458     add_cflags -msg_disable unsupieee
5459 elif enabled gcc; then
5460     check_optflags -fno-tree-vectorize
5461     check_cflags -Werror=format-security
5462     check_cflags -Werror=implicit-function-declaration
5463     check_cflags -Werror=missing-prototypes
5464     check_cflags -Werror=return-type
5465     check_cflags -Werror=vla
5466     check_cflags -Wformat
5467     check_cflags -fdiagnostics-color=auto
5468     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5469 elif enabled llvm_gcc; then
5470     check_cflags -mllvm -stack-alignment=16
5471 elif enabled clang; then
5472     check_cflags -mllvm -stack-alignment=16
5473     check_cflags -Qunused-arguments
5474     check_cflags -Werror=implicit-function-declaration
5475     check_cflags -Werror=missing-prototypes
5476     check_cflags -Werror=return-type
5477 elif enabled cparser; then
5478     add_cflags -Wno-missing-variable-declarations
5479     add_cflags -Wno-empty-statement
5480 elif enabled armcc; then
5481     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5482     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5483     # 2523: use of inline assembly is deprecated
5484     add_cflags -W${armcc_opt},--diag_suppress=2523
5485     add_cflags -W${armcc_opt},--diag_suppress=1207
5486     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5487     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5488     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5489     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5490 elif enabled tms470; then
5491     add_cflags -pds=824 -pds=837
5492     disable inline_asm
5493 elif enabled pathscale; then
5494     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5495 elif enabled_any msvc icl; then
5496     enabled x86_32 && disable aligned_stack
5497     enabled_all x86_32 debug && add_cflags -Oy-
5498     enabled debug && add_ldflags -debug
5499     enable pragma_deprecated
5500     if enabled icl; then
5501         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5502         # (correctly) on icl 13.x.
5503         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5504             add_cflags -Qansi-alias
5505         # Some inline asm is not compilable in debug
5506         if enabled debug; then
5507             disable ebp_available
5508             disable ebx_available
5509         fi
5510     fi
5511     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5512     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5513 fi
5514
5515 case $as_type in
5516     clang)
5517         add_asflags -Qunused-arguments
5518     ;;
5519 esac
5520
5521 case $ld_type in
5522     clang)
5523         check_ldflags -Qunused-arguments
5524     ;;
5525 esac
5526
5527 case $target_os in
5528     osf1)
5529         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5530     ;;
5531     plan9)
5532         add_cppflags -Dmain=plan9_main
5533     ;;
5534 esac
5535
5536 enable frame_thread_encoder
5537
5538 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5539
5540 check_deps $CONFIG_LIST       \
5541            $CONFIG_EXTRA      \
5542            $HAVE_LIST         \
5543            $ALL_COMPONENTS    \
5544
5545 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"
5546
5547
5548 if test $target_os = "haiku"; then
5549     disable memalign
5550     disable posix_memalign
5551 fi
5552
5553 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5554     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5555     enable dxva2_lib
5556
5557 ! enabled_any memalign posix_memalign aligned_malloc &&
5558     enabled simd_align_16 && enable memalign_hack
5559
5560 # add_dep lib dep
5561 # -> enable ${lib}_deps_${dep}
5562 # -> add $dep to ${lib}_deps only once
5563 add_dep() {
5564     lib=$1
5565     dep=$2
5566     enabled "${lib}_deps_${dep}" && return 0
5567     enable  "${lib}_deps_${dep}"
5568     prepend "${lib}_deps" $dep
5569 }
5570
5571 # merge deps lib components
5572 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5573 merge_deps() {
5574     lib=$1
5575     shift
5576     for comp in $*; do
5577         enabled $comp || continue
5578         eval "dep=\"\$${comp}_deps\""
5579         for d in $dep; do
5580             add_dep $lib $d
5581         done
5582     done
5583 }
5584
5585 merge_deps libavfilter $FILTER_LIST
5586
5587 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5588
5589 for thread in $THREADS_LIST; do
5590     if enabled $thread; then
5591         test -n "$thread_type" &&
5592             die "ERROR: Only one thread type must be selected." ||
5593             thread_type="$thread"
5594     fi
5595 done
5596
5597 enabled zlib && add_cppflags -DZLIB_CONST
5598
5599 # conditional library dependencies, in linking order
5600 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5601 enabled aresample_filter    && prepend avfilter_deps "swresample"
5602 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5603 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5604 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5605 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5606 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5607 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5608 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5609 enabled pan_filter          && prepend avfilter_deps "swresample"
5610 enabled pp_filter           && prepend avfilter_deps "postproc"
5611 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5612 enabled resample_filter && prepend avfilter_deps "avresample"
5613 enabled sab_filter          && prepend avfilter_deps "swscale"
5614 enabled scale_filter    && prepend avfilter_deps "swscale"
5615 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5616 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5617 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5618 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5619
5620 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5621
5622 enabled opus_decoder    && prepend avcodec_deps "swresample"
5623
5624 expand_deps(){
5625     lib_deps=${1}_deps
5626     eval "deps=\$$lib_deps"
5627     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5628     unique $lib_deps
5629 }
5630
5631 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5632 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5633
5634 map 'expand_deps $v' $LIBRARY_LIST
5635
5636 echo "install prefix            $prefix"
5637 echo "source path               $source_path"
5638 echo "C compiler                $cc"
5639 echo "C library                 $libc_type"
5640 if test "$host_cc" != "$cc"; then
5641     echo "host C compiler           $host_cc"
5642     echo "host C library            $host_libc_type"
5643 fi
5644 echo "ARCH                      $arch ($cpu)"
5645 if test "$build_suffix" != ""; then
5646     echo "build suffix              $build_suffix"
5647 fi
5648 if test "$progs_suffix" != ""; then
5649     echo "progs suffix              $progs_suffix"
5650 fi
5651 if test "$extra_version" != ""; then
5652     echo "version string suffix     $extra_version"
5653 fi
5654 echo "big-endian                ${bigendian-no}"
5655 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5656 if enabled x86; then
5657     echo "${yasmexe}                      ${yasm-no}"
5658     echo "MMX enabled               ${mmx-no}"
5659     echo "MMXEXT enabled            ${mmxext-no}"
5660     echo "3DNow! enabled            ${amd3dnow-no}"
5661     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5662     echo "SSE enabled               ${sse-no}"
5663     echo "SSSE3 enabled             ${ssse3-no}"
5664     echo "AVX enabled               ${avx-no}"
5665     echo "XOP enabled               ${xop-no}"
5666     echo "FMA3 enabled              ${fma3-no}"
5667     echo "FMA4 enabled              ${fma4-no}"
5668     echo "i686 features enabled     ${i686-no}"
5669     echo "CMOV is fast              ${fast_cmov-no}"
5670     echo "EBX available             ${ebx_available-no}"
5671     echo "EBP available             ${ebp_available-no}"
5672 fi
5673 if enabled aarch64; then
5674     echo "NEON enabled              ${neon-no}"
5675     echo "VFP enabled               ${vfp-no}"
5676 fi
5677 if enabled arm; then
5678     echo "ARMv5TE enabled           ${armv5te-no}"
5679     echo "ARMv6 enabled             ${armv6-no}"
5680     echo "ARMv6T2 enabled           ${armv6t2-no}"
5681     echo "VFP enabled               ${vfp-no}"
5682     echo "NEON enabled              ${neon-no}"
5683     echo "THUMB enabled             ${thumb-no}"
5684 fi
5685 if enabled mips; then
5686     echo "MIPS FPU enabled          ${mipsfpu-no}"
5687     echo "MIPS32R5 enabled          ${mips32r5-no}"
5688     echo "MIPS64R6 enabled          ${mips64r6-no}"
5689     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5690     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5691     echo "MIPS MSA enabled          ${msa-no}"
5692     echo "LOONGSON3 enabled         ${loongson3-no}"
5693 fi
5694 if enabled ppc; then
5695     echo "AltiVec enabled           ${altivec-no}"
5696     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5697     echo "PPC VSX optimizations     ${vsx-no}"
5698     echo "dcbzl available           ${dcbzl-no}"
5699 fi
5700 echo "debug symbols             ${debug-no}"
5701 echo "strip symbols             ${stripping-no}"
5702 echo "optimize for size         ${small-no}"
5703 echo "optimizations             ${optimizations-no}"
5704 echo "static                    ${static-no}"
5705 echo "shared                    ${shared-no}"
5706 echo "postprocessing support    ${postproc-no}"
5707 echo "new filter support        ${avfilter-no}"
5708 echo "network support           ${network-no}"
5709 echo "threading support         ${thread_type-no}"
5710 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5711 echo "SDL support               ${sdl-no}"
5712 echo "opencl enabled            ${opencl-no}"
5713 echo "texi2html enabled         ${texi2html-no}"
5714 echo "perl enabled              ${perl-no}"
5715 echo "pod2man enabled           ${pod2man-no}"
5716 echo "makeinfo enabled          ${makeinfo-no}"
5717 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5718 test -n "$random_seed" &&
5719     echo "random seed               ${random_seed}"
5720 echo
5721
5722 echo "External libraries:"
5723 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5724 echo
5725
5726 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5727     echo "Enabled ${type}s:"
5728     eval list=\$$(toupper $type)_LIST
5729     print_enabled '_*' $list | print_3_columns
5730     echo
5731 done
5732
5733 license="LGPL version 2.1 or later"
5734 if enabled nonfree; then
5735     license="nonfree and unredistributable"
5736 elif enabled gplv3; then
5737     license="GPL version 3 or later"
5738 elif enabled lgplv3; then
5739     license="LGPL version 3 or later"
5740 elif enabled gpl; then
5741     license="GPL version 2 or later"
5742 fi
5743
5744 echo "License: $license"
5745
5746 echo "Creating config.mak, config.h, and doc/config.texi..."
5747
5748 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5749
5750 enabled stripping || strip="echo skipping strip"
5751
5752 config_files="$TMPH config.mak doc/config.texi"
5753
5754 cat > config.mak <<EOF
5755 # Automatically generated by configure - do not modify!
5756 ifndef FFMPEG_CONFIG_MAK
5757 FFMPEG_CONFIG_MAK=1
5758 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5759 prefix=$prefix
5760 LIBDIR=\$(DESTDIR)$libdir
5761 SHLIBDIR=\$(DESTDIR)$shlibdir
5762 INCDIR=\$(DESTDIR)$incdir
5763 BINDIR=\$(DESTDIR)$bindir
5764 DATADIR=\$(DESTDIR)$datadir
5765 DOCDIR=\$(DESTDIR)$docdir
5766 MANDIR=\$(DESTDIR)$mandir
5767 SRC_PATH=$source_path
5768 ifndef MAIN_MAKEFILE
5769 SRC_PATH:=\$(SRC_PATH:.%=..%)
5770 endif
5771 CC_IDENT=$cc_ident
5772 ARCH=$arch
5773 INTRINSICS=$intrinsics
5774 CC=$cc
5775 CXX=$cxx
5776 AS=$as
5777 LD=$ld
5778 DEPCC=$dep_cc
5779 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5780 DEPAS=$as
5781 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5782 YASM=$yasmexe
5783 DEPYASM=$yasmexe
5784 AR=$ar
5785 ARFLAGS=$arflags
5786 AR_O=$ar_o
5787 RANLIB=$ranlib
5788 STRIP=$strip
5789 CP=cp -p
5790 LN_S=$ln_s
5791 CPPFLAGS=$CPPFLAGS
5792 CFLAGS=$CFLAGS
5793 CXXFLAGS=$CXXFLAGS
5794 ASFLAGS=$ASFLAGS
5795 AS_C=$AS_C
5796 AS_O=$AS_O
5797 CC_C=$CC_C
5798 CC_E=$CC_E
5799 CC_O=$CC_O
5800 CXX_C=$CXX_C
5801 CXX_O=$CXX_O
5802 LD_O=$LD_O
5803 LD_LIB=$LD_LIB
5804 LD_PATH=$LD_PATH
5805 DLLTOOL=$dlltool
5806 WINDRES=$windres
5807 DEPWINDRES=$dep_cc
5808 DOXYGEN=$doxygen
5809 LDFLAGS=$LDFLAGS
5810 LDEXEFLAGS=$LDEXEFLAGS
5811 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5812 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5813 YASMFLAGS=$YASMFLAGS
5814 BUILDSUF=$build_suffix
5815 PROGSSUF=$progs_suffix
5816 FULLNAME=$FULLNAME
5817 LIBPREF=$LIBPREF
5818 LIBSUF=$LIBSUF
5819 LIBNAME=$LIBNAME
5820 SLIBPREF=$SLIBPREF
5821 SLIBSUF=$SLIBSUF
5822 EXESUF=$EXESUF
5823 EXTRA_VERSION=$extra_version
5824 CCDEP=$CCDEP
5825 CXXDEP=$CXXDEP
5826 CCDEP_FLAGS=$CCDEP_FLAGS
5827 ASDEP=$ASDEP
5828 ASDEP_FLAGS=$ASDEP_FLAGS
5829 CC_DEPFLAGS=$CC_DEPFLAGS
5830 AS_DEPFLAGS=$AS_DEPFLAGS
5831 HOSTCC=$host_cc
5832 HOSTLD=$host_ld
5833 HOSTCFLAGS=$host_cflags
5834 HOSTCPPFLAGS=$host_cppflags
5835 HOSTEXESUF=$HOSTEXESUF
5836 HOSTLDFLAGS=$host_ldflags
5837 HOSTLIBS=$host_libs
5838 DEPHOSTCC=$host_cc
5839 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5840 HOSTCCDEP=$HOSTCCDEP
5841 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5842 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5843 HOSTCC_C=$HOSTCC_C
5844 HOSTCC_O=$HOSTCC_O
5845 HOSTLD_O=$HOSTLD_O
5846 TARGET_EXEC=$target_exec $target_exec_args
5847 TARGET_PATH=$target_path
5848 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5849 CFLAGS-ffplay=$sdl_cflags
5850 ZLIB=$($ldflags_filter -lz)
5851 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5852 EXTRALIBS=$extralibs
5853 COMPAT_OBJS=$compat_objs
5854 EXEOBJS=$exeobjs
5855 INSTALL=$install
5856 LIBTARGET=${LIBTARGET}
5857 SLIBNAME=${SLIBNAME}
5858 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5859 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5860 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5861 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5862 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5863 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5864 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5865 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5866 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5867 NOREDZONE_FLAGS=$noredzone_flags
5868 EOF
5869
5870 get_version(){
5871     lcname=lib${1}
5872     name=$(toupper $lcname)
5873     file=$source_path/$lcname/version.h
5874     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5875     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5876     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5877     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5878     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5879     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5880 }
5881
5882 map 'get_version $v' $LIBRARY_LIST
5883
5884 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5885
5886 print_program_libs(){
5887     eval "program_libs=\$${1}_libs"
5888     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5889 }
5890
5891 map 'print_program_libs $v' $PROGRAM_LIST
5892
5893 cat > $TMPH <<EOF
5894 /* Automatically generated by configure - do not modify! */
5895 #ifndef FFMPEG_CONFIG_H
5896 #define FFMPEG_CONFIG_H
5897 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5898 #define FFMPEG_LICENSE "$(c_escape $license)"
5899 #define CONFIG_THIS_YEAR 2015
5900 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5901 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5902 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5903 #define av_restrict $_restrict
5904 #define EXTERN_PREFIX "${extern_prefix}"
5905 #define EXTERN_ASM ${extern_prefix}
5906 #define BUILDSUF "$build_suffix"
5907 #define SLIBSUF "$SLIBSUF"
5908 #define HAVE_MMX2 HAVE_MMXEXT
5909 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5910 EOF
5911
5912 test -n "$assert_level" &&
5913     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5914
5915 test -n "$malloc_prefix" &&
5916     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5917
5918 if enabled yasm; then
5919     append config_files $TMPASM
5920     printf '' >$TMPASM
5921 fi
5922
5923 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5924
5925
5926 mkdir -p doc
5927 mkdir -p tests
5928 echo "@c auto-generated by configure" > doc/config.texi
5929
5930 print_config ARCH_   "$config_files" $ARCH_LIST
5931 print_config HAVE_   "$config_files" $HAVE_LIST
5932 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5933                                      $CONFIG_EXTRA      \
5934                                      $ALL_COMPONENTS    \
5935
5936 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5937 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5938
5939 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5940 cp_if_changed $TMPH config.h
5941 touch .config
5942
5943 enabled yasm && cp_if_changed $TMPASM config.asm
5944
5945 cat > $TMPH <<EOF
5946 /* Generated by ffconf */
5947 #ifndef AVUTIL_AVCONFIG_H
5948 #define AVUTIL_AVCONFIG_H
5949 EOF
5950
5951 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5952
5953 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5954
5955 cp_if_changed $TMPH libavutil/avconfig.h
5956
5957 if test -n "$WARNINGS"; then
5958     printf "\n$WARNINGS"
5959     enabled fatal_warnings && exit 1
5960 fi
5961
5962 # build pkg-config files
5963
5964 lib_version(){
5965     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5966 }
5967
5968 pkgconfig_generate(){
5969     name=$1
5970     shortname=${name#lib}${build_suffix}
5971     comment=$2
5972     version=$3
5973     libs=$4
5974     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5975     requires=${requires%, }
5976     enabled ${name#lib} || return 0
5977     mkdir -p $name
5978     cat <<EOF > $name/$name${build_suffix}.pc
5979 prefix=$prefix
5980 exec_prefix=\${prefix}
5981 libdir=$libdir
5982 includedir=$incdir
5983
5984 Name: $name
5985 Description: $comment
5986 Version: $version
5987 Requires: $(enabled shared || echo $requires)
5988 Requires.private: $(enabled shared && echo $requires)
5989 Conflicts:
5990 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5991 Libs.private: $(enabled shared && echo $libs)
5992 Cflags: -I\${includedir}
5993 EOF
5994
5995 mkdir -p doc/examples/pc-uninstalled
5996 includedir=${source_path}
5997 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5998     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5999 prefix=
6000 exec_prefix=
6001 libdir=\${pcfiledir}/../../../$name
6002 includedir=${includedir}
6003
6004 Name: $name
6005 Description: $comment
6006 Version: $version
6007 Requires: $requires
6008 Conflicts:
6009 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6010 Cflags: -I\${includedir}
6011 EOF
6012 }
6013
6014 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6015 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6016 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6017 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6018 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6019 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6020 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6021 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6022 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"