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 [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --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-libfaac         enable AAC encoding via libfaac [no]
 214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 218   --enable-libgme          enable Game Music Emu via libgme [no]
 219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 222   --enable-libmfx          enable HW acceleration through libmfx
 223   --enable-libmodplug      enable ModPlug via libmodplug [no]
 224   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 225   --enable-libnut          enable NUT (de)muxing via libnut,
 226                            native (de)muxer exists [no]
 227   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 228   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 229   --enable-libopencv       enable video filtering via libopencv [no]
 230   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 231   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 232   --enable-libopus         enable Opus de/encoding via libopus [no]
 233   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 234   --enable-libquvi         enable quvi input via libquvi [no]
 235   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 236   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 237   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 238   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 239   --enable-libsoxr         enable Include libsoxr resampling [no]
 240   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 241   --enable-libssh          enable SFTP protocol via libssh [no]
 242   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 243   --enable-libtheora       enable Theora encoding via libtheora [no]
 244   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 245   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 246   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 247   --enable-libvidstab      enable video stabilization using vid.stab [no]
 248   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 249   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 250   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 251                            native implementation exists [no]
 252   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 253   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 254   --enable-libwebp         enable WebP encoding via libwebp [no]
 255   --enable-libx264         enable H.264 encoding via x264 [no]
 256   --enable-libx265         enable HEVC encoding via x265 [no]
 257   --enable-libxavs         enable AVS encoding via xavs [no]
 258   --enable-libxcb          enable X11 grabbing using XCB [auto]
 259   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 260   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 261   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
 262   --enable-libxvid         enable Xvid encoding via xvidcore,
 263                            native MPEG-4/Xvid encoder exists [no]
 264   --enable-libzmq          enable message passing via libzmq [no]
 265   --enable-libzvbi         enable teletext support via libzvbi [no]
 266   --disable-lzma           disable lzma [autodetect]
 267   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 268   --enable-nvenc           enable NVIDIA NVENC support [no]
 269   --enable-openal          enable OpenAL 1.1 capture support [no]
 270   --enable-opencl          enable OpenCL code
 271   --enable-opengl          enable OpenGL rendering [no]
 272   --enable-openssl         enable openssl, needed for https support
 273                            if gnutls is not used [no]
 274   --disable-sdl            disable sdl [autodetect]
 275   --enable-x11grab         enable X11 grabbing (legacy) [no]
 276   --disable-xlib           disable xlib [autodetect]
 277   --disable-zlib           disable zlib [autodetect]
 278
 279 Toolchain options:
 280   --arch=ARCH              select architecture [$arch]
 281   --cpu=CPU                select the minimum required CPU (affects
 282                            instruction selection, may crash on older CPUs)
 283   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 284   --progs-suffix=SUFFIX    program name suffix []
 285   --enable-cross-compile   assume a cross-compiler is used
 286   --sysroot=PATH           root of cross-build tree
 287   --sysinclude=PATH        location of cross-build system headers
 288   --target-os=OS           compiler targets OS [$target_os]
 289   --target-exec=CMD        command to run executables on target
 290   --target-path=DIR        path to view of build directory on target
 291   --target-samples=DIR     path to samples directory on target
 292   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 293   --toolchain=NAME         set tool defaults according to NAME
 294   --nm=NM                  use nm tool NM [$nm_default]
 295   --ar=AR                  use archive tool AR [$ar_default]
 296   --as=AS                  use assembler AS [$as_default]
 297   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 298   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 299   --cc=CC                  use C compiler CC [$cc_default]
 300   --cxx=CXX                use C compiler CXX [$cxx_default]
 301   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 302   --ld=LD                  use linker LD [$ld_default]
 303   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 304   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 305   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 306   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 307   --host-cc=HOSTCC         use host C compiler HOSTCC
 308   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 309   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 310   --host-ld=HOSTLD         use host linker HOSTLD
 311   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 312   --host-libs=HLIBS        use libs HLIBS when linking for host
 313   --host-os=OS             compiler host OS [$target_os]
 314   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 315   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 316   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 317   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 318   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 319   --extra-version=STRING   version string suffix []
 320   --optflags=OPTFLAGS      override optimization-related compiler flags
 321   --build-suffix=SUFFIX    library name suffix []
 322   --enable-pic             build position-independent code
 323   --enable-thumb           compile for Thumb instruction set
 324   --enable-lto             use link-time optimization
 325
 326 Advanced options (experts only):
 327   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 328   --disable-symver         disable symbol versioning
 329   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 330   --disable-safe-bitstream-reader
 331                            disable buffer boundary checking in bitreaders
 332                            (faster, but may crash)
 333   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 334   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 335
 336 Optimization options (experts only):
 337   --disable-asm            disable all assembly optimizations
 338   --disable-altivec        disable AltiVec optimizations
 339   --disable-amd3dnow       disable 3DNow! optimizations
 340   --disable-amd3dnowext    disable 3DNow! extended optimizations
 341   --disable-mmx            disable MMX optimizations
 342   --disable-mmxext         disable MMXEXT optimizations
 343   --disable-sse            disable SSE optimizations
 344   --disable-sse2           disable SSE2 optimizations
 345   --disable-sse3           disable SSE3 optimizations
 346   --disable-ssse3          disable SSSE3 optimizations
 347   --disable-sse4           disable SSE4 optimizations
 348   --disable-sse42          disable SSE4.2 optimizations
 349   --disable-avx            disable AVX optimizations
 350   --disable-xop            disable XOP optimizations
 351   --disable-fma3           disable FMA3 optimizations
 352   --disable-fma4           disable FMA4 optimizations
 353   --disable-avx2           disable AVX2 optimizations
 354   --disable-armv5te        disable armv5te optimizations
 355   --disable-armv6          disable armv6 optimizations
 356   --disable-armv6t2        disable armv6t2 optimizations
 357   --disable-vfp            disable VFP optimizations
 358   --disable-neon           disable NEON optimizations
 359   --disable-inline-asm     disable use of inline assembly
 360   --disable-yasm           disable use of nasm/yasm assembly
 361   --disable-mips32r2       disable MIPS32R2 optimizations
 362   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 363   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 364   --disable-mipsfpu        disable floating point MIPS optimizations
 365   --disable-fast-unaligned consider unaligned accesses slow
 366
 367 Developer options (useful when working on FFmpeg itself):
 368   --disable-debug          disable debugging symbols
 369   --enable-debug=LEVEL     set the debug level [$debuglevel]
 370   --disable-optimizations  disable compiler optimizations
 371   --enable-extra-warnings  enable more compiler warnings
 372   --disable-stripping      disable stripping of executables and shared libraries
 373   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 374                            2 causes a slowdown at runtime.
 375   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 376   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 377                            leaks and errors, using the specified valgrind binary.
 378                            Cannot be combined with --target-exec
 379   --enable-ftrapv          Trap arithmetic overflows
 380   --samples=PATH           location of test samples for FATE, if not set use
 381                            \$FATE_SAMPLES at make invocation time.
 382   --enable-neon-clobber-test check NEON registers for clobbering (should be
 383                            used only for debugging purposes)
 384   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 385                            should be used only for debugging purposes)
 386   --enable-random          randomly enable/disable components
 387   --disable-random
 388   --enable-random=LIST     randomly enable/disable specific components or
 389   --disable-random=LIST    component groups. LIST is a comma-separated list
 390                            of NAME[:PROB] entries where NAME is a component
 391                            (group) and PROB the probability associated with
 392                            NAME (default 0.5).
 393   --random-seed=VALUE      seed value for --enable/disable-random
 394
 395 NOTE: Object files are built at the place where configure is launched.
 396 EOF
 397   exit 0
 398 }
 399
 400 quotes='""'
 401
 402 log(){
 403     echo "$@" >> $logfile
 404 }
 405
 406 log_file(){
 407     log BEGIN $1
 408     pr -n -t $1 >> $logfile
 409     log END $1
 410 }
 411
 412 echolog(){
 413     log "$@"
 414     echo "$@"
 415 }
 416
 417 warn(){
 418     log "WARNING: $*"
 419     WARNINGS="${WARNINGS}WARNING: $*\n"
 420 }
 421
 422 die(){
 423     echolog "$@"
 424     cat <<EOF
 425
 426 If you think configure made a mistake, make sure you are using the latest
 427 version from Git.  If the latest version fails, report the problem to the
 428 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 429 EOF
 430     if disabled logging; then
 431         cat <<EOF
 432 Rerun configure with logging enabled (do not use --disable-logging), and
 433 include the log this produces with your report.
 434 EOF
 435     else
 436         cat <<EOF
 437 Include the log file "$logfile" produced by configure as this will help
 438 solve the problem.
 439 EOF
 440     fi
 441     exit 1
 442 }
 443
 444 # Avoid locale weirdness, besides we really just want to translate ASCII.
 445 toupper(){
 446     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 447 }
 448
 449 tolower(){
 450     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 451 }
 452
 453 c_escape(){
 454     echo "$*" | sed 's/["\\]/\\\0/g'
 455 }
 456
 457 sh_quote(){
 458     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 459     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 460     echo "$v"
 461 }
 462
 463 cleanws(){
 464     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 465 }
 466
 467 filter(){
 468     pat=$1
 469     shift
 470     for v; do
 471         eval "case $v in $pat) echo $v ;; esac"
 472     done
 473 }
 474
 475 filter_out(){
 476     pat=$1
 477     shift
 478     for v; do
 479         eval "case $v in $pat) ;; *) echo $v ;; esac"
 480     done
 481 }
 482
 483 map(){
 484     m=$1
 485     shift
 486     for v; do eval $m; done
 487 }
 488
 489 add_suffix(){
 490     suffix=$1
 491     shift
 492     for v; do echo ${v}${suffix}; done
 493 }
 494
 495 set_all(){
 496     value=$1
 497     shift
 498     for var in $*; do
 499         eval $var=$value
 500     done
 501 }
 502
 503 set_weak(){
 504     value=$1
 505     shift
 506     for var; do
 507         eval : \${$var:=$value}
 508     done
 509 }
 510
 511 sanitize_var_name(){
 512     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 513 }
 514
 515 set_safe(){
 516     var=$1
 517     shift
 518     eval $(sanitize_var_name "$var")='$*'
 519 }
 520
 521 get_safe(){
 522     eval echo \$$(sanitize_var_name "$1")
 523 }
 524
 525 pushvar(){
 526     for pvar in $*; do
 527         eval level=\${${pvar}_level:=0}
 528         eval ${pvar}_${level}="\$$pvar"
 529         eval ${pvar}_level=$(($level+1))
 530     done
 531 }
 532
 533 popvar(){
 534     for pvar in $*; do
 535         eval level=\${${pvar}_level:-0}
 536         test $level = 0 && continue
 537         eval level=$(($level-1))
 538         eval $pvar="\${${pvar}_${level}}"
 539         eval ${pvar}_level=$level
 540         eval unset ${pvar}_${level}
 541     done
 542 }
 543
 544 enable(){
 545     set_all yes $*
 546 }
 547
 548 disable(){
 549     set_all no $*
 550 }
 551
 552 enable_weak(){
 553     set_weak yes $*
 554 }
 555
 556 disable_weak(){
 557     set_weak no $*
 558 }
 559
 560 enable_safe(){
 561     for var; do
 562         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 563     done
 564 }
 565
 566 disable_safe(){
 567     for var; do
 568         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 569     done
 570 }
 571
 572 do_enable_deep(){
 573     for var; do
 574         enabled $var && continue
 575         eval sel="\$${var}_select"
 576         eval sgs="\$${var}_suggest"
 577         pushvar var sgs
 578         enable_deep $sel
 579         popvar sgs
 580         enable_deep_weak $sgs
 581         popvar var
 582     done
 583 }
 584
 585 enable_deep(){
 586     do_enable_deep $*
 587     enable $*
 588 }
 589
 590 enable_deep_weak(){
 591     for var; do
 592         disabled $var && continue
 593         pushvar var
 594         do_enable_deep $var
 595         popvar var
 596         enable_weak $var
 597     done
 598 }
 599
 600 enabled(){
 601     test "${1#!}" = "$1" && op== || op=!=
 602     eval test "x\$${1#!}" $op "xyes"
 603 }
 604
 605 disabled(){
 606     test "${1#!}" = "$1" && op== || op=!=
 607     eval test "x\$${1#!}" $op "xno"
 608 }
 609
 610 enabled_all(){
 611     for opt; do
 612         enabled $opt || return 1
 613     done
 614 }
 615
 616 disabled_all(){
 617     for opt; do
 618         disabled $opt || return 1
 619     done
 620 }
 621
 622 enabled_any(){
 623     for opt; do
 624         enabled $opt && return 0
 625     done
 626 }
 627
 628 disabled_any(){
 629     for opt; do
 630         disabled $opt && return 0
 631     done
 632     return 1
 633 }
 634
 635 set_default(){
 636     for opt; do
 637         eval : \${$opt:=\$${opt}_default}
 638     done
 639 }
 640
 641 is_in(){
 642     value=$1
 643     shift
 644     for var in $*; do
 645         [ $var = $value ] && return 0
 646     done
 647     return 1
 648 }
 649
 650 do_check_deps(){
 651     for cfg; do
 652         cfg="${cfg#!}"
 653         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 654         disabled ${cfg}_checking && continue
 655         enable ${cfg}_checking
 656         append allopts $cfg
 657
 658         eval dep_all="\$${cfg}_deps"
 659         eval dep_any="\$${cfg}_deps_any"
 660         eval dep_sel="\$${cfg}_select"
 661         eval dep_sgs="\$${cfg}_suggest"
 662         eval dep_ifa="\$${cfg}_if"
 663         eval dep_ifn="\$${cfg}_if_any"
 664
 665         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 666         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 667         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 668
 669         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 670         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 671         enabled_all  $dep_all || disable $cfg
 672         enabled_any  $dep_any || disable $cfg
 673         disabled_any $dep_sel && disable $cfg
 674
 675         if enabled $cfg; then
 676             enable_deep $dep_sel
 677             enable_deep_weak $dep_sgs
 678         fi
 679
 680         disable ${cfg}_checking
 681     done
 682 }
 683
 684 check_deps(){
 685     unset allopts
 686
 687     do_check_deps "$@"
 688
 689     for cfg in $allopts; do
 690         enabled $cfg || continue
 691         eval dep_extralibs="\$${cfg}_extralibs"
 692         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 693     done
 694 }
 695
 696 print_config(){
 697     pfx=$1
 698     files=$2
 699     shift 2
 700     map 'eval echo "$v \${$v:-no}"' "$@" |
 701     awk "BEGIN { split(\"$files\", files) }
 702         {
 703             c = \"$pfx\" toupper(\$1);
 704             v = \$2;
 705             sub(/yes/, 1, v);
 706             sub(/no/,  0, v);
 707             for (f in files) {
 708                 file = files[f];
 709                 if (file ~ /\\.h\$/) {
 710                     printf(\"#define %s %d\\n\", c, v) >>file;
 711                 } else if (file ~ /\\.asm\$/) {
 712                     printf(\"%%define %s %d\\n\", c, v) >>file;
 713                 } else if (file ~ /\\.mak\$/) {
 714                     n = -v ? \"\" : \"!\";
 715                     printf(\"%s%s=yes\\n\", n, c) >>file;
 716                 } else if (file ~ /\\.texi\$/) {
 717                     pre = -v ? \"\" : \"@c \";
 718                     yesno = \$2;
 719                     c2 = tolower(c);
 720                     gsub(/_/, \"-\", c2);
 721                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 722                 }
 723             }
 724         }"
 725 }
 726
 727 print_enabled(){
 728     suf=$1
 729     shift
 730     for v; do
 731         enabled $v && printf "%s\n" ${v%$suf};
 732     done
 733 }
 734
 735 append(){
 736     var=$1
 737     shift
 738     eval "$var=\"\$$var $*\""
 739 }
 740
 741 prepend(){
 742     var=$1
 743     shift
 744     eval "$var=\"$* \$$var\""
 745 }
 746
 747 unique(){
 748     var=$1
 749     uniq_list=""
 750     for tok in $(eval echo \$$var); do
 751         uniq_list="$(filter_out $tok $uniq_list) $tok"
 752     done
 753     eval "$var=\"${uniq_list}\""
 754 }
 755
 756 add_cppflags(){
 757     append CPPFLAGS "$@"
 758 }
 759
 760 add_cflags(){
 761     append CFLAGS $($cflags_filter "$@")
 762 }
 763
 764 add_cxxflags(){
 765     append CXXFLAGS $($cflags_filter "$@")
 766 }
 767
 768 add_asflags(){
 769     append ASFLAGS $($asflags_filter "$@")
 770 }
 771
 772 add_ldflags(){
 773     append LDFLAGS $($ldflags_filter "$@")
 774 }
 775
 776 add_ldexeflags(){
 777     append LDEXEFLAGS $($ldflags_filter "$@")
 778 }
 779
 780 add_stripflags(){
 781     append ASMSTRIPFLAGS "$@"
 782 }
 783
 784 add_extralibs(){
 785     prepend extralibs $($ldflags_filter "$@")
 786 }
 787
 788 add_host_cppflags(){
 789     append host_cppflags "$@"
 790 }
 791
 792 add_host_cflags(){
 793     append host_cflags $($host_cflags_filter "$@")
 794 }
 795
 796 add_host_ldflags(){
 797     append host_ldflags $($host_ldflags_filter "$@")
 798 }
 799
 800 add_compat(){
 801     append compat_objs $1
 802     shift
 803     map 'add_cppflags -D$v' "$@"
 804 }
 805
 806 check_cmd(){
 807     log "$@"
 808     "$@" >> $logfile 2>&1
 809 }
 810
 811 check_stat(){
 812     log check_stat "$@"
 813     stat "$1" >> $logfile 2>&1
 814 }
 815
 816 cc_o(){
 817     eval printf '%s\\n' $CC_O
 818 }
 819
 820 cc_e(){
 821     eval printf '%s\\n' $CC_E
 822 }
 823
 824 check_cc(){
 825     log check_cc "$@"
 826     cat > $TMPC
 827     log_file $TMPC
 828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 829 }
 830
 831 check_cxx(){
 832     log check_cxx "$@"
 833     cat > $TMPCPP
 834     log_file $TMPCPP
 835     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 836 }
 837
 838 check_oc(){
 839     log check_oc "$@"
 840     cat > $TMPM
 841     log_file $TMPM
 842     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 843 }
 844
 845 check_cpp(){
 846     log check_cpp "$@"
 847     cat > $TMPC
 848     log_file $TMPC
 849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 850 }
 851
 852 as_o(){
 853     eval printf '%s\\n' $AS_O
 854 }
 855
 856 check_as(){
 857     log check_as "$@"
 858     cat > $TMPS
 859     log_file $TMPS
 860     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 861 }
 862
 863 check_inline_asm(){
 864     log check_inline_asm "$@"
 865     name="$1"
 866     code="$2"
 867     shift 2
 868     disable $name
 869     check_cc "$@" <<EOF && enable $name
 870 void foo(void){ __asm__ volatile($code); }
 871 EOF
 872 }
 873
 874 check_insn(){
 875     log check_insn "$@"
 876     check_inline_asm ${1}_inline "\"$2\""
 877     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 878 }
 879
 880 check_yasm(){
 881     log check_yasm "$@"
 882     echo "$1" > $TMPS
 883     log_file $TMPS
 884     shift 1
 885     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 886 }
 887
 888 ld_o(){
 889     eval printf '%s\\n' $LD_O
 890 }
 891
 892 check_ld(){
 893     log check_ld "$@"
 894     type=$1
 895     shift 1
 896     flags=$(filter_out '-l*|*.so' $@)
 897     libs=$(filter '-l*|*.so' $@)
 898     check_$type $($cflags_filter $flags) || return
 899     flags=$($ldflags_filter $flags)
 900     libs=$($ldflags_filter $libs)
 901     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 902 }
 903
 904 print_include(){
 905     hdr=$1
 906     test "${hdr%.h}" = "${hdr}" &&
 907         echo "#include $hdr"    ||
 908         echo "#include <$hdr>"
 909 }
 910
 911 check_code(){
 912     log check_code "$@"
 913     check=$1
 914     headers=$2
 915     code=$3
 916     shift 3
 917     {
 918         for hdr in $headers; do
 919             print_include $hdr
 920         done
 921         echo "int main(void) { $code; return 0; }"
 922     } | check_$check "$@"
 923 }
 924
 925 check_cppflags(){
 926     log check_cppflags "$@"
 927     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 928 int x;
 929 EOF
 930 }
 931
 932 test_cflags(){
 933     log test_cflags "$@"
 934     set -- $($cflags_filter "$@")
 935     check_cc "$@" <<EOF
 936 int x;
 937 EOF
 938 }
 939
 940 check_cflags(){
 941     log check_cflags "$@"
 942     test_cflags "$@" && add_cflags "$@"
 943 }
 944
 945 check_cxxflags(){
 946     log check_cxxflags "$@"
 947     set -- $($cflags_filter "$@")
 948     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 949 int x;
 950 EOF
 951 }
 952
 953 test_ldflags(){
 954     log test_ldflags "$@"
 955     check_ld "cc" "$@" <<EOF
 956 int main(void){ return 0; }
 957 EOF
 958 }
 959
 960 check_ldflags(){
 961     log check_ldflags "$@"
 962     test_ldflags "$@" && add_ldflags "$@"
 963 }
 964
 965 test_stripflags(){
 966     log test_stripflags "$@"
 967     # call check_cc to get a fresh TMPO
 968     check_cc <<EOF
 969 int main(void) { return 0; }
 970 EOF
 971     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 972 }
 973
 974 check_stripflags(){
 975     log check_stripflags "$@"
 976     test_stripflags "$@" && add_stripflags "$@"
 977 }
 978
 979 check_header(){
 980     log check_header "$@"
 981     header=$1
 982     shift
 983     disable_safe $header
 984     check_cpp "$@" <<EOF && enable_safe $header
 985 #include <$header>
 986 int x;
 987 EOF
 988 }
 989
 990 check_header_oc(){
 991     log check_header_oc "$@"
 992     rm -f -- "$TMPO"
 993     header=$1
 994     shift
 995     disable_safe $header
 996     {
 997        echo "#include <$header>"
 998        echo "int main(void) { return 0; }"
 999     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1000 }
1001
1002 check_func(){
1003     log check_func "$@"
1004     func=$1
1005     shift
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 extern int $func();
1009 int main(void){ $func(); }
1010 EOF
1011 }
1012
1013 check_mathfunc(){
1014     log check_mathfunc "$@"
1015     func=$1
1016     narg=$2
1017     shift 2
1018     test $narg = 2 && args="f, g" || args="f"
1019     disable $func
1020     check_ld "cc" "$@" <<EOF && enable $func
1021 #include <math.h>
1022 float foo(float f, float g) { return $func($args); }
1023 int main(void){ return (int) foo; }
1024 EOF
1025 }
1026
1027 check_func_headers(){
1028     log check_func_headers "$@"
1029     headers=$1
1030     funcs=$2
1031     shift 2
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         for func in $funcs; do
1037             echo "long check_$func(void) { return (long) $func; }"
1038         done
1039         echo "int main(void) { return 0; }"
1040     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_class_headers_cpp(){
1044     log check_class_headers_cpp "$@"
1045     headers=$1
1046     classes=$2
1047     shift 2
1048     {
1049         for hdr in $headers; do
1050             echo "#include <$hdr>"
1051         done
1052         echo "int main(void) { "
1053         i=1
1054         for class in $classes; do
1055             echo "$class obj$i;"
1056             i=$(expr $i + 1)
1057         done
1058         echo "return 0; }"
1059     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1060 }
1061
1062 check_cpp_condition(){
1063     log check_cpp_condition "$@"
1064     header=$1
1065     condition=$2
1066     shift 2
1067     check_cpp "$@" <<EOF
1068 #include <$header>
1069 #if !($condition)
1070 #error "unsatisfied condition: $condition"
1071 #endif
1072 EOF
1073 }
1074
1075 check_lib(){
1076     log check_lib "$@"
1077     header="$1"
1078     func="$2"
1079     shift 2
1080     check_header $header && check_func $func "$@" && add_extralibs "$@"
1081 }
1082
1083 check_lib2(){
1084     log check_lib2 "$@"
1085     headers="$1"
1086     funcs="$2"
1087     shift 2
1088     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1089 }
1090
1091 check_lib_cpp(){
1092     log check_lib_cpp "$@"
1093     headers="$1"
1094     classes="$2"
1095     shift 2
1096     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1097 }
1098
1099 check_pkg_config(){
1100     log check_pkg_config "$@"
1101     pkgandversion="$1"
1102     pkg="${1%% *}"
1103     headers="$2"
1104     funcs="$3"
1105     shift 3
1106     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1107     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1108     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1109     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1110         set_safe ${pkg}_cflags $pkg_cflags   &&
1111         set_safe ${pkg}_libs   $pkg_libs
1112 }
1113
1114 check_exec(){
1115     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1116 }
1117
1118 check_exec_crash(){
1119     code=$(cat)
1120
1121     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1122     # are safe but may not be available everywhere.  Thus we use
1123     # raise(SIGTERM) instead.  The check is run in a subshell so we
1124     # can redirect the "Terminated" message from the shell.  SIGBUS
1125     # is not defined by standard C so it is used conditionally.
1126
1127     (check_exec "$@") >> $logfile 2>&1 <<EOF
1128 #include <signal.h>
1129 static void sighandler(int sig){
1130     raise(SIGTERM);
1131 }
1132 int foo(void){
1133     $code
1134 }
1135 int (*func_ptr)(void) = foo;
1136 int main(void){
1137     signal(SIGILL, sighandler);
1138     signal(SIGFPE, sighandler);
1139     signal(SIGSEGV, sighandler);
1140 #ifdef SIGBUS
1141     signal(SIGBUS, sighandler);
1142 #endif
1143     return func_ptr();
1144 }
1145 EOF
1146 }
1147
1148 check_type(){
1149     log check_type "$@"
1150     headers=$1
1151     type=$2
1152     shift 2
1153     disable_safe "$type"
1154     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1155 }
1156
1157 check_struct(){
1158     log check_struct "$@"
1159     headers=$1
1160     struct=$2
1161     member=$3
1162     shift 3
1163     disable_safe "${struct}_${member}"
1164     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1165         enable_safe "${struct}_${member}"
1166 }
1167
1168 check_builtin(){
1169     log check_builtin "$@"
1170     name=$1
1171     headers=$2
1172     builtin=$3
1173     shift 3
1174     disable "$name"
1175     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1176 }
1177
1178 check_compile_assert(){
1179     log check_compile_assert "$@"
1180     name=$1
1181     headers=$2
1182     condition=$3
1183     shift 3
1184     disable "$name"
1185     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1186 }
1187
1188 require(){
1189     name="$1"
1190     header="$2"
1191     func="$3"
1192     shift 3
1193     check_lib $header $func "$@" || die "ERROR: $name not found"
1194 }
1195
1196 require2(){
1197     name="$1"
1198     headers="$2"
1199     func="$3"
1200     shift 3
1201     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1202 }
1203
1204 require_cpp(){
1205     name="$1"
1206     headers="$2"
1207     classes="$3"
1208     shift 3
1209     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1210 }
1211
1212 use_pkg_config(){
1213     pkg="$1"
1214     check_pkg_config "$@" || return 1
1215     add_cflags    $(get_safe ${pkg}_cflags)
1216     add_extralibs $(get_safe ${pkg}_libs)
1217 }
1218
1219 require_pkg_config(){
1220     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1221 }
1222
1223 require_libfreetype(){
1224     log require_libfreetype "$@"
1225     pkg="freetype2"
1226     check_cmd $pkg_config --exists --print-errors $pkg \
1227       || die "ERROR: $pkg not found"
1228     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1229     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1230     {
1231         echo "#include <ft2build.h>"
1232         echo "#include FT_FREETYPE_H"
1233         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1234         echo "int main(void) { return 0; }"
1235     } | check_ld "cc" $pkg_cflags $pkg_libs \
1236       && set_safe ${pkg}_cflags $pkg_cflags \
1237       && set_safe ${pkg}_libs   $pkg_libs \
1238       || die "ERROR: $pkg not found"
1239     add_cflags    $(get_safe ${pkg}_cflags)
1240     add_extralibs $(get_safe ${pkg}_libs)
1241 }
1242
1243 hostcc_e(){
1244     eval printf '%s\\n' $HOSTCC_E
1245 }
1246
1247 hostcc_o(){
1248     eval printf '%s\\n' $HOSTCC_O
1249 }
1250
1251 check_host_cc(){
1252     log check_host_cc "$@"
1253     cat > $TMPC
1254     log_file $TMPC
1255     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1256 }
1257
1258 check_host_cpp(){
1259     log check_host_cpp "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1263 }
1264
1265 check_host_cppflags(){
1266     log check_host_cppflags "$@"
1267     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1268 int x;
1269 EOF
1270 }
1271
1272 check_host_cflags(){
1273     log check_host_cflags "$@"
1274     set -- $($host_cflags_filter "$@")
1275     check_host_cc "$@" <<EOF && append host_cflags "$@"
1276 int x;
1277 EOF
1278 }
1279
1280 check_host_cpp_condition(){
1281     log check_host_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     check_host_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 apply(){
1294     file=$1
1295     shift
1296     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1297 }
1298
1299 cp_if_changed(){
1300     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1301     mkdir -p "$(dirname $2)"
1302     $cp_f "$1" "$2"
1303 }
1304
1305 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1306 # system-dependent things.
1307
1308 COMPONENT_LIST="
1309     bsfs
1310     decoders
1311     demuxers
1312     encoders
1313     filters
1314     hwaccels
1315     indevs
1316     muxers
1317     outdevs
1318     parsers
1319     protocols
1320 "
1321
1322 EXAMPLE_LIST="
1323     avio_reading_example
1324     decoding_encoding_example
1325     demuxing_decoding_example
1326     extract_mvs_example
1327     filter_audio_example
1328     filtering_audio_example
1329     filtering_video_example
1330     metadata_example
1331     muxing_example
1332     remuxing_example
1333     resampling_audio_example
1334     scaling_video_example
1335     transcode_aac_example
1336     transcoding_example
1337 "
1338
1339 EXTERNAL_LIBRARY_LIST="
1340     avisynth
1341     bzlib
1342     crystalhd
1343     decklink
1344     frei0r
1345     gnutls
1346     iconv
1347     ladspa
1348     libaacplus
1349     libass
1350     libbluray
1351     libbs2b
1352     libcaca
1353     libcdio
1354     libcelt
1355     libdc1394
1356     libfaac
1357     libfdk_aac
1358     libflite
1359     libfontconfig
1360     libfreetype
1361     libfribidi
1362     libgme
1363     libgsm
1364     libiec61883
1365     libilbc
1366     libmfx
1367     libmodplug
1368     libmp3lame
1369     libnut
1370     libopencore_amrnb
1371     libopencore_amrwb
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     libquvi
1378     librtmp
1379     libschroedinger
1380     libshine
1381     libsmbclient
1382     libsoxr
1383     libspeex
1384     libssh
1385     libstagefright_h264
1386     libtheora
1387     libtwolame
1388     libutvideo
1389     libv4l2
1390     libvidstab
1391     libvo_aacenc
1392     libvo_amrwbenc
1393     libvorbis
1394     libvpx
1395     libwavpack
1396     libwebp
1397     libx264
1398     libx265
1399     libxavs
1400     libxcb
1401     libxcb_shm
1402     libxcb_shape
1403     libxcb_xfixes
1404     libxvid
1405     libzmq
1406     libzvbi
1407     lzma
1408     nvenc
1409     openal
1410     opencl
1411     opengl
1412     openssl
1413     sdl
1414     x11grab
1415     xlib
1416     zlib
1417 "
1418
1419 DOCUMENT_LIST="
1420     doc
1421     htmlpages
1422     manpages
1423     podpages
1424     txtpages
1425 "
1426
1427 FEATURE_LIST="
1428     ftrapv
1429     gray
1430     hardcoded_tables
1431     runtime_cpudetect
1432     safe_bitstream_reader
1433     shared
1434     small
1435     static
1436     swscale_alpha
1437 "
1438
1439 HWACCEL_LIST="
1440     dxva2
1441     vaapi
1442     vda
1443     vdpau
1444     xvmc
1445 "
1446
1447 LIBRARY_LIST="
1448     avcodec
1449     avdevice
1450     avfilter
1451     avformat
1452     avresample
1453     avutil
1454     postproc
1455     swresample
1456     swscale
1457 "
1458
1459 LICENSE_LIST="
1460     gpl
1461     nonfree
1462     version3
1463 "
1464
1465 PROGRAM_LIST="
1466     ffplay
1467     ffprobe
1468     ffserver
1469     ffmpeg
1470 "
1471
1472 SUBSYSTEM_LIST="
1473     dct
1474     dwt
1475     error_resilience
1476     faan
1477     fast_unaligned
1478     fft
1479     lsp
1480     lzo
1481     mdct
1482     pixelutils
1483     network
1484     qsv
1485     rdft
1486 "
1487
1488 CONFIG_LIST="
1489     $COMPONENT_LIST
1490     $DOCUMENT_LIST
1491     $EXAMPLE_LIST
1492     $EXTERNAL_LIBRARY_LIST
1493     $FEATURE_LIST
1494     $HWACCEL_LIST
1495     $LICENSE_LIST
1496     $LIBRARY_LIST
1497     $PROGRAM_LIST
1498     $SUBSYSTEM_LIST
1499     fontconfig
1500     incompatible_libav_abi
1501     memalign_hack
1502     memory_poisoning
1503     neon_clobber_test
1504     pic
1505     pod2man
1506     raise_major
1507     thumb
1508     xmm_clobber_test
1509 "
1510
1511 THREADS_LIST="
1512     pthreads
1513     os2threads
1514     w32threads
1515 "
1516
1517 ATOMICS_LIST="
1518     atomics_gcc
1519     atomics_suncc
1520     atomics_win32
1521 "
1522
1523 ARCH_LIST="
1524     aarch64
1525     alpha
1526     arm
1527     avr32
1528     avr32_ap
1529     avr32_uc
1530     bfin
1531     ia64
1532     m68k
1533     mips
1534     mips64
1535     parisc
1536     ppc
1537     ppc64
1538     s390
1539     sh4
1540     sparc
1541     sparc64
1542     tilegx
1543     tilepro
1544     tomi
1545     x86
1546     x86_32
1547     x86_64
1548 "
1549
1550 ARCH_EXT_LIST_ARM="
1551     armv5te
1552     armv6
1553     armv6t2
1554     armv8
1555     neon
1556     vfp
1557     vfpv3
1558     setend
1559 "
1560
1561 ARCH_EXT_LIST_MIPS="
1562     mipsfpu
1563     mips32r2
1564     mipsdspr1
1565     mipsdspr2
1566 "
1567
1568 ARCH_EXT_LIST_X86_SIMD="
1569     amd3dnow
1570     amd3dnowext
1571     avx
1572     avx2
1573     fma3
1574     fma4
1575     mmx
1576     mmxext
1577     sse
1578     sse2
1579     sse3
1580     sse4
1581     sse42
1582     ssse3
1583     xop
1584 "
1585
1586 ARCH_EXT_LIST_PPC="
1587     altivec
1588     dcbzl
1589     ldbrx
1590     ppc4xx
1591     vsx
1592 "
1593
1594 ARCH_EXT_LIST_X86="
1595     $ARCH_EXT_LIST_X86_SIMD
1596     cpunop
1597     i686
1598 "
1599
1600 ARCH_EXT_LIST="
1601     $ARCH_EXT_LIST_ARM
1602     $ARCH_EXT_LIST_PPC
1603     $ARCH_EXT_LIST_X86
1604     $ARCH_EXT_LIST_MIPS
1605     loongson
1606 "
1607
1608 ARCH_FEATURES="
1609     aligned_stack
1610     fast_64bit
1611     fast_clz
1612     fast_cmov
1613     local_aligned_8
1614     local_aligned_16
1615     local_aligned_32
1616     simd_align_16
1617 "
1618
1619 BUILTIN_LIST="
1620     atomic_cas_ptr
1621     atomic_compare_exchange
1622     machine_rw_barrier
1623     MemoryBarrier
1624     mm_empty
1625     rdtsc
1626     sarestart
1627     sync_val_compare_and_swap
1628 "
1629 HAVE_LIST_CMDLINE="
1630     inline_asm
1631     symver
1632     yasm
1633 "
1634
1635 HAVE_LIST_PUB="
1636     bigendian
1637     fast_unaligned
1638     incompatible_libav_abi
1639 "
1640
1641 HEADERS_LIST="
1642     alsa_asoundlib_h
1643     altivec_h
1644     arpa_inet_h
1645     asm_types_h
1646     cdio_paranoia_h
1647     cdio_paranoia_paranoia_h
1648     dev_bktr_ioctl_bt848_h
1649     dev_bktr_ioctl_meteor_h
1650     dev_ic_bt8xx_h
1651     dev_video_bktr_ioctl_bt848_h
1652     dev_video_meteor_ioctl_meteor_h
1653     direct_h
1654     dlfcn_h
1655     dxva_h
1656     ES2_gl_h
1657     gsm_h
1658     io_h
1659     mach_mach_time_h
1660     machine_ioctl_bt848_h
1661     machine_ioctl_meteor_h
1662     malloc_h
1663     openjpeg_1_5_openjpeg_h
1664     OpenGL_gl3_h
1665     poll_h
1666     sndio_h
1667     soundcard_h
1668     sys_mman_h
1669     sys_param_h
1670     sys_resource_h
1671     sys_select_h
1672     sys_soundcard_h
1673     sys_time_h
1674     sys_un_h
1675     sys_videoio_h
1676     termios_h
1677     udplite_h
1678     unistd_h
1679     windows_h
1680     winsock2_h
1681 "
1682
1683 INTRINSICS_LIST="
1684     intrinsics_neon
1685 "
1686
1687 MATH_FUNCS="
1688     atanf
1689     atan2f
1690     cbrt
1691     cbrtf
1692     cosf
1693     exp2
1694     exp2f
1695     expf
1696     isinf
1697     isnan
1698     ldexpf
1699     llrint
1700     llrintf
1701     log2
1702     log2f
1703     log10f
1704     lrint
1705     lrintf
1706     powf
1707     rint
1708     round
1709     roundf
1710     sinf
1711     trunc
1712     truncf
1713 "
1714
1715 SYSTEM_FUNCS="
1716     access
1717     aligned_malloc
1718     clock_gettime
1719     closesocket
1720     CommandLineToArgvW
1721     CoTaskMemFree
1722     CryptGenRandom
1723     dlopen
1724     fcntl
1725     flt_lim
1726     fork
1727     getaddrinfo
1728     gethrtime
1729     getopt
1730     GetProcessAffinityMask
1731     GetProcessMemoryInfo
1732     GetProcessTimes
1733     getrusage
1734     getservbyport
1735     GetSystemTimeAsFileTime
1736     gettimeofday
1737     glob
1738     glXGetProcAddress
1739     gmtime_r
1740     inet_aton
1741     isatty
1742     jack_port_get_latency_range
1743     kbhit
1744     localtime_r
1745     lzo1x_999_compress
1746     mach_absolute_time
1747     MapViewOfFile
1748     memalign
1749     mkstemp
1750     mmap
1751     mprotect
1752     nanosleep
1753     PeekNamedPipe
1754     posix_memalign
1755     pthread_cancel
1756     sched_getaffinity
1757     SetConsoleTextAttribute
1758     setmode
1759     setrlimit
1760     Sleep
1761     strerror_r
1762     sysconf
1763     sysctl
1764     usleep
1765     VirtualAlloc
1766     wglGetProcAddress
1767 "
1768
1769 TOOLCHAIN_FEATURES="
1770     as_dn_directive
1771     as_func
1772     asm_mod_q
1773     attribute_may_alias
1774     attribute_packed
1775     ebp_available
1776     ebx_available
1777     gnu_as
1778     gnu_windres
1779     ibm_asm
1780     inline_asm_labels
1781     inline_asm_nonlocal_labels
1782     inline_asm_direct_symbol_refs
1783     pragma_deprecated
1784     rsync_contimeout
1785     symver_asm_label
1786     symver_gnu_asm
1787     vfp_args
1788     xform_asm
1789     xmm_clobbers
1790 "
1791
1792 TYPES_LIST="
1793     CONDITION_VARIABLE_Ptr
1794     DXVA_PicParams_HEVC
1795     socklen_t
1796     struct_addrinfo
1797     struct_group_source_req
1798     struct_ip_mreq_source
1799     struct_ipv6_mreq
1800     struct_pollfd
1801     struct_rusage_ru_maxrss
1802     struct_sctp_event_subscribe
1803     struct_sockaddr_in6
1804     struct_sockaddr_sa_len
1805     struct_sockaddr_storage
1806     struct_stat_st_mtim_tv_nsec
1807     struct_v4l2_frmivalenum_discrete
1808 "
1809
1810 HAVE_LIST="
1811     $ARCH_EXT_LIST
1812     $(add_suffix _external $ARCH_EXT_LIST)
1813     $(add_suffix _inline   $ARCH_EXT_LIST)
1814     $ARCH_FEATURES
1815     $ATOMICS_LIST
1816     $BUILTIN_LIST
1817     $HAVE_LIST_CMDLINE
1818     $HAVE_LIST_PUB
1819     $HEADERS_LIST
1820     $INTRINSICS_LIST
1821     $MATH_FUNCS
1822     $SYSTEM_FUNCS
1823     $THREADS_LIST
1824     $TOOLCHAIN_FEATURES
1825     $TYPES_LIST
1826     atomics_native
1827     dos_paths
1828     dxva2api_cobj
1829     dxva2_lib
1830     libc_msvcrt
1831     libdc1394_1
1832     libdc1394_2
1833     makeinfo
1834     makeinfo_html
1835     perl
1836     pod2man
1837     sdl
1838     section_data_rel_ro
1839     texi2html
1840     threads
1841     vdpau_x11
1842     xlib
1843 "
1844
1845 # options emitted with CONFIG_ prefix but not available on the command line
1846 CONFIG_EXTRA="
1847     aandcttables
1848     ac3dsp
1849     audio_frame_queue
1850     audiodsp
1851     blockdsp
1852     bswapdsp
1853     cabac
1854     dvprofile
1855     exif
1856     faandct
1857     faanidct
1858     fdctdsp
1859     frame_thread_encoder
1860     gcrypt
1861     golomb
1862     gplv3
1863     h263dsp
1864     h264chroma
1865     h264dsp
1866     h264pred
1867     h264qpel
1868     hpeldsp
1869     huffman
1870     huffyuvdsp
1871     huffyuvencdsp
1872     idctdsp
1873     iirfilter
1874     imdct15
1875     intrax8
1876     lgplv3
1877     llauddsp
1878     llviddsp
1879     lpc
1880     me_cmp
1881     mpeg_er
1882     mpegaudio
1883     mpegaudiodsp
1884     mpegvideo
1885     mpegvideoenc
1886     nettle
1887     pixblockdsp
1888     qpeldsp
1889     rangecoder
1890     riffdec
1891     riffenc
1892     rtpdec
1893     rtpenc_chain
1894     sinewin
1895     startcode
1896     tpeldsp
1897     videodsp
1898     vp3dsp
1899     wma_freqs
1900 "
1901
1902 CMDLINE_SELECT="
1903     $ARCH_EXT_LIST
1904     $CONFIG_LIST
1905     $HAVE_LIST_CMDLINE
1906     $THREADS_LIST
1907     asm
1908     cross_compile
1909     debug
1910     extra_warnings
1911     logging
1912     lto
1913     optimizations
1914     rpath
1915     stripping
1916 "
1917
1918 PATHS_LIST="
1919     bindir
1920     datadir
1921     docdir
1922     incdir
1923     libdir
1924     mandir
1925     prefix
1926     shlibdir
1927 "
1928
1929 CMDLINE_SET="
1930     $PATHS_LIST
1931     ar
1932     arch
1933     as
1934     assert_level
1935     build_suffix
1936     cc
1937     cpu
1938     cross_prefix
1939     cxx
1940     dep_cc
1941     doxygen
1942     extra_version
1943     gas
1944     host_cc
1945     host_cflags
1946     host_ld
1947     host_ldflags
1948     host_libs
1949     host_os
1950     install
1951     ld
1952     logfile
1953     malloc_prefix
1954     nm
1955     optflags
1956     pkg_config
1957     pkg_config_flags
1958     progs_suffix
1959     random_seed
1960     ranlib
1961     samples
1962     strip
1963     sws_max_filter_size
1964     sysinclude
1965     sysroot
1966     target_exec
1967     target_os
1968     target_path
1969     target_samples
1970     tempprefix
1971     toolchain
1972     valgrind
1973     yasmexe
1974 "
1975
1976 CMDLINE_APPEND="
1977     extra_cflags
1978     extra_cxxflags
1979     host_cppflags
1980 "
1981
1982 # code dependency declarations
1983
1984 # architecture extensions
1985
1986 armv5te_deps="arm"
1987 armv6_deps="arm"
1988 armv6t2_deps="arm"
1989 armv8_deps="aarch64"
1990 neon_deps_any="aarch64 arm"
1991 intrinsics_neon_deps="neon"
1992 vfp_deps_any="aarch64 arm"
1993 vfpv3_deps="vfp"
1994 setend_deps="arm"
1995
1996 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1997
1998 mipsfpu_deps="mips"
1999 mips32r2_deps="mips"
2000 mipsdspr1_deps="mips"
2001 mipsdspr2_deps="mips"
2002
2003 altivec_deps="ppc"
2004 ppc4xx_deps="ppc"
2005 vsx_deps="ppc"
2006
2007 cpunop_deps="i686"
2008 x86_64_select="i686"
2009 x86_64_suggest="fast_cmov"
2010
2011 amd3dnow_deps="mmx"
2012 amd3dnowext_deps="amd3dnow"
2013 i686_deps="x86"
2014 mmx_deps="x86"
2015 mmxext_deps="mmx"
2016 sse_deps="mmxext"
2017 sse2_deps="sse"
2018 sse3_deps="sse2"
2019 ssse3_deps="sse3"
2020 sse4_deps="ssse3"
2021 sse42_deps="sse4"
2022 avx_deps="sse42"
2023 xop_deps="avx"
2024 fma3_deps="avx"
2025 fma4_deps="avx"
2026 avx2_deps="avx"
2027
2028 mmx_external_deps="yasm"
2029 mmx_inline_deps="inline_asm"
2030 mmx_suggest="mmx_external mmx_inline"
2031
2032 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2033     eval dep=\$${ext}_deps
2034     eval ${ext}_external_deps='"${dep}_external"'
2035     eval ${ext}_inline_deps='"${dep}_inline"'
2036     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2037 done
2038
2039 aligned_stack_if_any="aarch64 ppc x86"
2040 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2041 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2042 fast_unaligned_if_any="aarch64 ppc x86"
2043 simd_align_16_if_any="altivec neon sse"
2044
2045 # system capabilities
2046
2047 symver_if_any="symver_asm_label symver_gnu_asm"
2048
2049 # threading support
2050 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2051 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2052 atomics_win32_if="MemoryBarrier"
2053 atomics_native_if_any="$ATOMICS_LIST"
2054 w32threads_deps="atomics_native"
2055 threads_if_any="$THREADS_LIST"
2056
2057 # subsystems
2058 dct_select="rdft"
2059 error_resilience_select="me_cmp"
2060 faandct_deps="faan fdctdsp"
2061 faanidct_deps="faan idctdsp"
2062 frame_thread_encoder_deps="encoders threads"
2063 intrax8_select="error_resilience"
2064 mdct_select="fft"
2065 rdft_select="fft"
2066 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2067 mpeg_er_select="error_resilience"
2068 mpegaudio_select="mpegaudiodsp"
2069 mpegaudiodsp_select="dct"
2070 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2071 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2072
2073 # decoders / encoders
2074 aac_decoder_select="imdct15 mdct sinewin"
2075 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2076 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2077 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2078 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2079 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2080 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2081 aic_decoder_select="golomb idctdsp"
2082 alac_encoder_select="lpc"
2083 als_decoder_select="bswapdsp"
2084 amrnb_decoder_select="lsp"
2085 amrwb_decoder_select="lsp"
2086 amv_decoder_select="sp5x_decoder exif"
2087 amv_encoder_select="aandcttables mpegvideoenc"
2088 ape_decoder_select="bswapdsp llauddsp"
2089 apng_decoder_select="zlib"
2090 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2091 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2092 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2093 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2094 atrac1_decoder_select="mdct sinewin"
2095 atrac3_decoder_select="mdct"
2096 atrac3p_decoder_select="mdct sinewin"
2097 avrn_decoder_select="exif"
2098 bink_decoder_select="blockdsp hpeldsp"
2099 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2100 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2101 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2102 cllc_decoder_select="bswapdsp"
2103 comfortnoise_encoder_select="lpc"
2104 cook_decoder_select="audiodsp mdct sinewin"
2105 cscd_decoder_select="lzo"
2106 cscd_decoder_suggest="zlib"
2107 dca_decoder_select="mdct"
2108 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2109 dnxhd_decoder_select="blockdsp idctdsp"
2110 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2111 dvvideo_decoder_select="dvprofile idctdsp"
2112 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2113 dxa_decoder_select="zlib"
2114 eac3_decoder_select="ac3_decoder"
2115 eac3_encoder_select="ac3_encoder"
2116 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2117 eatgq_decoder_select="aandcttables"
2118 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2119 exr_decoder_select="zlib"
2120 ffv1_decoder_select="golomb rangecoder"
2121 ffv1_encoder_select="rangecoder"
2122 ffvhuff_decoder_select="huffyuv_decoder"
2123 ffvhuff_encoder_select="huffyuv_encoder"
2124 fic_decoder_select="golomb"
2125 flac_decoder_select="golomb"
2126 flac_encoder_select="bswapdsp golomb lpc"
2127 flashsv_decoder_select="zlib"
2128 flashsv_encoder_select="zlib"
2129 flashsv2_encoder_select="zlib"
2130 flashsv2_decoder_select="zlib"
2131 flv_decoder_select="h263_decoder"
2132 flv_encoder_select="h263_encoder"
2133 fourxm_decoder_select="blockdsp bswapdsp"
2134 fraps_decoder_select="bswapdsp huffman"
2135 g2m_decoder_select="blockdsp idctdsp zlib"
2136 g729_decoder_select="audiodsp"
2137 h261_decoder_select="mpeg_er mpegvideo"
2138 h261_encoder_select="aandcttables mpegvideoenc"
2139 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2140 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2141 h263i_decoder_select="h263_decoder"
2142 h263p_encoder_select="h263_encoder"
2143 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2144 h264_decoder_suggest="error_resilience"
2145 h264_qsv_decoder_deps="libmfx"
2146 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2147 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2148 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2149 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2150 iac_decoder_select="imc_decoder"
2151 imc_decoder_select="bswapdsp fft mdct sinewin"
2152 indeo3_decoder_select="hpeldsp"
2153 interplay_video_decoder_select="hpeldsp"
2154 jpegls_decoder_select="golomb mjpeg_decoder"
2155 jpegls_encoder_select="golomb"
2156 jv_decoder_select="blockdsp"
2157 lagarith_decoder_select="huffyuvdsp"
2158 ljpeg_encoder_select="aandcttables idctdsp"
2159 loco_decoder_select="golomb"
2160 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2161 metasound_decoder_select="lsp mdct sinewin"
2162 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2163 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2164 mjpeg_encoder_select="aandcttables mpegvideoenc"
2165 mjpegb_decoder_select="mjpeg_decoder"
2166 mlp_decoder_select="mlp_parser"
2167 motionpixels_decoder_select="bswapdsp"
2168 mp1_decoder_select="mpegaudio"
2169 mp1float_decoder_select="mpegaudio"
2170 mp2_decoder_select="mpegaudio"
2171 mp2float_decoder_select="mpegaudio"
2172 mp3_decoder_select="mpegaudio"
2173 mp3adu_decoder_select="mpegaudio"
2174 mp3adufloat_decoder_select="mpegaudio"
2175 mp3float_decoder_select="mpegaudio"
2176 mp3on4_decoder_select="mpegaudio"
2177 mp3on4float_decoder_select="mpegaudio"
2178 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2179 mpc8_decoder_select="mpegaudiodsp"
2180 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2181 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2182 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2183 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2184 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2185 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2186 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2187 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2188 mpeg4_encoder_select="h263_encoder"
2189 msmpeg4v1_decoder_select="h263_decoder"
2190 msmpeg4v2_decoder_select="h263_decoder"
2191 msmpeg4v2_encoder_select="h263_encoder"
2192 msmpeg4v3_decoder_select="h263_decoder"
2193 msmpeg4v3_encoder_select="h263_encoder"
2194 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2195 mxpeg_decoder_select="mjpeg_decoder"
2196 nellymoser_decoder_select="mdct sinewin"
2197 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2198 nuv_decoder_select="idctdsp lzo"
2199 on2avc_decoder_select="mdct"
2200 opus_decoder_deps="swresample"
2201 opus_decoder_select="imdct15"
2202 png_decoder_select="zlib"
2203 png_encoder_select="huffyuvencdsp zlib"
2204 prores_decoder_select="blockdsp idctdsp"
2205 prores_encoder_select="fdctdsp"
2206 qcelp_decoder_select="lsp"
2207 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2208 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2209 ra_144_decoder_select="audiodsp"
2210 ralf_decoder_select="golomb"
2211 rawvideo_decoder_select="bswapdsp"
2212 rtjpeg_decoder_select="me_cmp"
2213 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2214 rv10_encoder_select="h263_encoder"
2215 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2216 rv20_encoder_select="h263_encoder"
2217 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2218 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2219 shorten_decoder_select="golomb"
2220 sipr_decoder_select="lsp"
2221 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2222 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2223 sonic_decoder_select="golomb rangecoder"
2224 sonic_encoder_select="golomb rangecoder"
2225 sonic_ls_encoder_select="golomb rangecoder"
2226 sp5x_decoder_select="mjpeg_decoder"
2227 svq1_decoder_select="hpeldsp"
2228 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2229 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2230 svq3_decoder_suggest="zlib"
2231 tak_decoder_select="audiodsp"
2232 theora_decoder_select="vp3_decoder"
2233 thp_decoder_select="mjpeg_decoder"
2234 tiff_decoder_suggest="zlib lzma"
2235 tiff_encoder_suggest="zlib"
2236 truehd_decoder_select="mlp_parser"
2237 truemotion2_decoder_select="bswapdsp"
2238 truespeech_decoder_select="bswapdsp"
2239 tscc_decoder_select="zlib"
2240 twinvq_decoder_select="mdct lsp sinewin"
2241 utvideo_decoder_select="bswapdsp"
2242 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2243 vble_decoder_select="huffyuvdsp"
2244 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2245 vc1image_decoder_select="vc1_decoder"
2246 vorbis_decoder_select="mdct"
2247 vorbis_encoder_select="mdct"
2248 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2249 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2250 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2251 vp6a_decoder_select="vp6_decoder"
2252 vp6f_decoder_select="vp6_decoder"
2253 vp7_decoder_select="h264pred videodsp"
2254 vp8_decoder_select="h264pred videodsp"
2255 vp9_decoder_select="videodsp vp9_parser"
2256 webp_decoder_select="vp8_decoder"
2257 wmalossless_decoder_select="llauddsp"
2258 wmapro_decoder_select="mdct sinewin wma_freqs"
2259 wmav1_decoder_select="mdct sinewin wma_freqs"
2260 wmav1_encoder_select="mdct sinewin wma_freqs"
2261 wmav2_decoder_select="mdct sinewin wma_freqs"
2262 wmav2_encoder_select="mdct sinewin wma_freqs"
2263 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2264 wmv1_decoder_select="h263_decoder"
2265 wmv1_encoder_select="h263_encoder"
2266 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2267 wmv2_encoder_select="h263_encoder"
2268 wmv3_decoder_select="vc1_decoder"
2269 wmv3image_decoder_select="wmv3_decoder"
2270 zerocodec_decoder_select="zlib"
2271 zlib_decoder_select="zlib"
2272 zlib_encoder_select="zlib"
2273 zmbv_decoder_select="zlib"
2274 zmbv_encoder_select="zlib"
2275
2276 # hardware accelerators
2277 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2278 dxva2_deps="dxva2api_h"
2279 vaapi_deps="va_va_h"
2280 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2281 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2282 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2283 xvmc_deps="X11_extensions_XvMClib_h"
2284
2285 h263_vaapi_hwaccel_deps="vaapi"
2286 h263_vaapi_hwaccel_select="h263_decoder"
2287 h263_vdpau_hwaccel_deps="vdpau"
2288 h263_vdpau_hwaccel_select="h263_decoder"
2289 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2290 h264_dxva2_hwaccel_deps="dxva2"
2291 h264_dxva2_hwaccel_select="h264_decoder"
2292 h264_vaapi_hwaccel_deps="vaapi"
2293 h264_vaapi_hwaccel_select="h264_decoder"
2294 h264_vda_decoder_deps="vda"
2295 h264_vda_decoder_select="h264_decoder"
2296 h264_vda_hwaccel_deps="vda"
2297 h264_vda_hwaccel_select="h264_decoder"
2298 h264_vda_old_hwaccel_deps="vda"
2299 h264_vda_old_hwaccel_select="h264_decoder"
2300 h264_vdpau_decoder_deps="vdpau"
2301 h264_vdpau_decoder_select="h264_decoder"
2302 h264_vdpau_hwaccel_deps="vdpau"
2303 h264_vdpau_hwaccel_select="h264_decoder"
2304 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2305 hevc_dxva2_hwaccel_select="hevc_decoder"
2306 mpeg_vdpau_decoder_deps="vdpau"
2307 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2308 mpeg_xvmc_hwaccel_deps="xvmc"
2309 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2310 mpeg1_vdpau_decoder_deps="vdpau"
2311 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2312 mpeg1_vdpau_hwaccel_deps="vdpau"
2313 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2314 mpeg1_xvmc_hwaccel_deps="xvmc"
2315 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2316 mpeg2_crystalhd_decoder_select="crystalhd"
2317 mpeg2_dxva2_hwaccel_deps="dxva2"
2318 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2319 mpeg2_vaapi_hwaccel_deps="vaapi"
2320 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2321 mpeg2_vdpau_hwaccel_deps="vdpau"
2322 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2323 mpeg2_xvmc_hwaccel_deps="xvmc"
2324 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2325 mpeg4_crystalhd_decoder_select="crystalhd"
2326 mpeg4_vaapi_hwaccel_deps="vaapi"
2327 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2328 mpeg4_vdpau_decoder_deps="vdpau"
2329 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2330 mpeg4_vdpau_hwaccel_deps="vdpau"
2331 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2332 msmpeg4_crystalhd_decoder_select="crystalhd"
2333 vc1_crystalhd_decoder_select="crystalhd"
2334 vc1_dxva2_hwaccel_deps="dxva2"
2335 vc1_dxva2_hwaccel_select="vc1_decoder"
2336 vc1_vaapi_hwaccel_deps="vaapi"
2337 vc1_vaapi_hwaccel_select="vc1_decoder"
2338 vc1_vdpau_decoder_deps="vdpau"
2339 vc1_vdpau_decoder_select="vc1_decoder"
2340 vc1_vdpau_hwaccel_deps="vdpau"
2341 vc1_vdpau_hwaccel_select="vc1_decoder"
2342 wmv3_crystalhd_decoder_select="crystalhd"
2343 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2344 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2345 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2346 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2347
2348 # parsers
2349 h264_parser_select="h264_decoder"
2350 hevc_parser_select="hevc_decoder"
2351 mpegvideo_parser_select="mpegvideo"
2352 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2353 vc1_parser_select="mpegvideo startcode vc1_decoder"
2354
2355 # external libraries
2356 libaacplus_encoder_deps="libaacplus"
2357 libcelt_decoder_deps="libcelt"
2358 libfaac_encoder_deps="libfaac"
2359 libfaac_encoder_select="audio_frame_queue"
2360 libfdk_aac_decoder_deps="libfdk_aac"
2361 libfdk_aac_encoder_deps="libfdk_aac"
2362 libfdk_aac_encoder_select="audio_frame_queue"
2363 libgme_demuxer_deps="libgme"
2364 libgsm_decoder_deps="libgsm"
2365 libgsm_encoder_deps="libgsm"
2366 libgsm_ms_decoder_deps="libgsm"
2367 libgsm_ms_encoder_deps="libgsm"
2368 libilbc_decoder_deps="libilbc"
2369 libilbc_encoder_deps="libilbc"
2370 libmodplug_demuxer_deps="libmodplug"
2371 libmp3lame_encoder_deps="libmp3lame"
2372 libmp3lame_encoder_select="audio_frame_queue"
2373 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2374 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2375 libopencore_amrnb_encoder_select="audio_frame_queue"
2376 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2377 libopenh264_encoder_deps="libopenh264"
2378 libopenjpeg_decoder_deps="libopenjpeg"
2379 libopenjpeg_encoder_deps="libopenjpeg"
2380 libopus_decoder_deps="libopus"
2381 libopus_encoder_deps="libopus"
2382 libopus_encoder_select="audio_frame_queue"
2383 libquvi_demuxer_deps="libquvi"
2384 libschroedinger_decoder_deps="libschroedinger"
2385 libschroedinger_encoder_deps="libschroedinger"
2386 libshine_encoder_deps="libshine"
2387 libshine_encoder_select="audio_frame_queue"
2388 libspeex_decoder_deps="libspeex"
2389 libspeex_encoder_deps="libspeex"
2390 libspeex_encoder_select="audio_frame_queue"
2391 libstagefright_h264_decoder_deps="libstagefright_h264"
2392 libtheora_encoder_deps="libtheora"
2393 libtwolame_encoder_deps="libtwolame"
2394 libvo_aacenc_encoder_deps="libvo_aacenc"
2395 libvo_aacenc_encoder_select="audio_frame_queue"
2396 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2397 libvorbis_decoder_deps="libvorbis"
2398 libvorbis_encoder_deps="libvorbis"
2399 libvorbis_encoder_select="audio_frame_queue"
2400 libvpx_vp8_decoder_deps="libvpx"
2401 libvpx_vp8_encoder_deps="libvpx"
2402 libvpx_vp9_decoder_deps="libvpx"
2403 libvpx_vp9_encoder_deps="libvpx"
2404 libwavpack_encoder_deps="libwavpack"
2405 libwebp_encoder_deps="libwebp"
2406 libx264_encoder_deps="libx264"
2407 libx264rgb_encoder_deps="libx264"
2408 libx264rgb_encoder_select="libx264_encoder"
2409 libx265_encoder_deps="libx265"
2410 libxavs_encoder_deps="libxavs"
2411 libxvid_encoder_deps="libxvid"
2412 libutvideo_decoder_deps="libutvideo"
2413 libutvideo_encoder_deps="libutvideo"
2414 libzvbi_teletext_decoder_deps="libzvbi"
2415 nvenc_encoder_deps="nvenc"
2416
2417 # demuxers / muxers
2418 ac3_demuxer_select="ac3_parser"
2419 asf_demuxer_select="riffdec"
2420 asf_muxer_select="riffenc"
2421 asf_stream_muxer_select="asf_muxer"
2422 avi_demuxer_select="riffdec exif"
2423 avi_muxer_select="riffenc"
2424 avisynth_demuxer_deps="avisynth"
2425 avisynth_demuxer_select="riffdec"
2426 caf_demuxer_select="riffdec"
2427 dash_muxer_select="mp4_muxer"
2428 dirac_demuxer_select="dirac_parser"
2429 dts_demuxer_select="dca_parser"
2430 dtshd_demuxer_select="dca_parser"
2431 dv_demuxer_select="dvprofile"
2432 dv_muxer_select="dvprofile"
2433 dxa_demuxer_select="riffdec"
2434 eac3_demuxer_select="ac3_parser"
2435 f4v_muxer_select="mov_muxer"
2436 flac_demuxer_select="flac_parser"
2437 hds_muxer_select="flv_muxer"
2438 hls_muxer_select="mpegts_muxer"
2439 image2_alias_pix_demuxer_select="image2_demuxer"
2440 image2_brender_pix_demuxer_select="image2_demuxer"
2441 ipod_muxer_select="mov_muxer"
2442 ismv_muxer_select="mov_muxer"
2443 libnut_demuxer_deps="libnut"
2444 libnut_muxer_deps="libnut"
2445 matroska_audio_muxer_select="matroska_muxer"
2446 matroska_demuxer_select="riffdec"
2447 matroska_demuxer_suggest="bzlib lzo zlib"
2448 matroska_muxer_select="riffenc"
2449 mmf_muxer_select="riffenc"
2450 mov_demuxer_select="riffdec"
2451 mov_demuxer_suggest="zlib"
2452 mov_muxer_select="riffenc rtpenc_chain"
2453 mp3_demuxer_select="mpegaudio_parser"
2454 mp4_muxer_select="mov_muxer"
2455 mpegts_muxer_select="adts_muxer latm_muxer"
2456 mpegtsraw_demuxer_select="mpegts_demuxer"
2457 mxf_d10_muxer_select="mxf_muxer"
2458 mxf_opatom_muxer_select="mxf_muxer"
2459 nut_muxer_select="riffenc"
2460 nuv_demuxer_select="riffdec"
2461 oga_muxer_select="ogg_muxer"
2462 ogg_demuxer_select="golomb"
2463 opus_muxer_select="ogg_muxer"
2464 psp_muxer_select="mov_muxer"
2465 rtp_demuxer_select="sdp_demuxer"
2466 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2467 rtsp_demuxer_select="http_protocol rtpdec"
2468 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2469 sap_demuxer_select="sdp_demuxer"
2470 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2471 sdp_demuxer_select="rtpdec"
2472 smoothstreaming_muxer_select="ismv_muxer"
2473 spdif_muxer_select="aac_parser"
2474 spx_muxer_select="ogg_muxer"
2475 tak_demuxer_select="tak_parser"
2476 tg2_muxer_select="mov_muxer"
2477 tgp_muxer_select="mov_muxer"
2478 vobsub_demuxer_select="mpegps_demuxer"
2479 w64_demuxer_select="wav_demuxer"
2480 w64_muxer_select="wav_muxer"
2481 wav_demuxer_select="riffdec"
2482 wav_muxer_select="riffenc"
2483 webm_muxer_select="riffenc"
2484 wtv_demuxer_select="riffdec"
2485 wtv_muxer_select="riffenc"
2486 xmv_demuxer_select="riffdec"
2487 xwma_demuxer_select="riffdec"
2488
2489 # indevs / outdevs
2490 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2491 alsa_outdev_deps="alsa_asoundlib_h"
2492 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2493 avfoundation_indev_select="avfoundation"
2494 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2495 caca_outdev_deps="libcaca"
2496 decklink_outdev_deps="decklink pthreads"
2497 decklink_outdev_extralibs="-lstdc++"
2498 decklink_indev_deps="decklink pthreads"
2499 decklink_indev_extralibs="-lstdc++"
2500 dshow_indev_deps="IBaseFilter"
2501 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2502 dv1394_indev_deps="dv1394"
2503 dv1394_indev_select="dv_demuxer"
2504 fbdev_indev_deps="linux_fb_h"
2505 fbdev_outdev_deps="linux_fb_h"
2506 gdigrab_indev_deps="CreateDIBSection"
2507 gdigrab_indev_extralibs="-lgdi32"
2508 gdigrab_indev_select="bmp_decoder"
2509 iec61883_indev_deps="libiec61883"
2510 jack_indev_deps="jack_jack_h sem_timedwait"
2511 lavfi_indev_deps="avfilter"
2512 libcdio_indev_deps="libcdio"
2513 libdc1394_indev_deps="libdc1394"
2514 libv4l2_indev_deps="libv4l2"
2515 openal_indev_deps="openal"
2516 opengl_outdev_deps="opengl"
2517 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2518 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2519 pulse_indev_deps="libpulse"
2520 pulse_outdev_deps="libpulse"
2521 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2522 qtkit_indev_select="qtkit"
2523 sdl_outdev_deps="sdl"
2524 sndio_indev_deps="sndio_h"
2525 sndio_outdev_deps="sndio_h"
2526 v4l_indev_deps="linux_videodev_h"
2527 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2528 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2529 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2530 vfwcap_indev_extralibs="-lavicap32"
2531 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2532 xv_outdev_extralibs="-lXv -lX11 -lXext"
2533 x11grab_indev_deps="x11grab"
2534 x11grab_xcb_indev_deps="libxcb"
2535
2536 # protocols
2537 bluray_protocol_deps="libbluray"
2538 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2539 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2540 ffrtmpcrypt_protocol_select="tcp_protocol"
2541 ffrtmphttp_protocol_deps="!librtmp_protocol"
2542 ffrtmphttp_protocol_select="http_protocol"
2543 ftp_protocol_select="tcp_protocol"
2544 gopher_protocol_select="network"
2545 http_protocol_select="tcp_protocol"
2546 httpproxy_protocol_select="tcp_protocol"
2547 https_protocol_select="tls_protocol"
2548 icecast_protocol_select="http_protocol"
2549 librtmp_protocol_deps="librtmp"
2550 librtmpe_protocol_deps="librtmp"
2551 librtmps_protocol_deps="librtmp"
2552 librtmpt_protocol_deps="librtmp"
2553 librtmpte_protocol_deps="librtmp"
2554 libsmbclient_protocol_deps="libsmbclient gplv3"
2555 libssh_protocol_deps="libssh"
2556 mmsh_protocol_select="http_protocol"
2557 mmst_protocol_select="network"
2558 rtmp_protocol_deps="!librtmp_protocol"
2559 rtmp_protocol_select="tcp_protocol"
2560 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2561 rtmps_protocol_deps="!librtmp_protocol"
2562 rtmps_protocol_select="tls_protocol"
2563 rtmpt_protocol_select="ffrtmphttp_protocol"
2564 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2565 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2566 rtp_protocol_select="udp_protocol"
2567 sctp_protocol_deps="struct_sctp_event_subscribe"
2568 sctp_protocol_select="network"
2569 srtp_protocol_select="rtp_protocol"
2570 tcp_protocol_select="network"
2571 tls_protocol_deps_any="openssl gnutls"
2572 tls_protocol_select="tcp_protocol"
2573 udp_protocol_select="network"
2574 udplite_protocol_select="network"
2575 unix_protocol_deps="sys_un_h"
2576 unix_protocol_select="network"
2577
2578 # filters
2579 amovie_filter_deps="avcodec avformat"
2580 aresample_filter_deps="swresample"
2581 ass_filter_deps="libass"
2582 asyncts_filter_deps="avresample"
2583 atempo_filter_deps="avcodec"
2584 atempo_filter_select="rdft"
2585 azmq_filter_deps="libzmq"
2586 blackframe_filter_deps="gpl"
2587 boxblur_filter_deps="gpl"
2588 bs2b_filter_deps="libbs2b"
2589 colormatrix_filter_deps="gpl"
2590 cropdetect_filter_deps="gpl"
2591 delogo_filter_deps="gpl"
2592 deshake_filter_select="pixelutils"
2593 drawtext_filter_deps="libfreetype"
2594 ebur128_filter_deps="gpl"
2595 eq_filter_deps="gpl"
2596 flite_filter_deps="libflite"
2597 frei0r_filter_deps="frei0r dlopen"
2598 frei0r_src_filter_deps="frei0r dlopen"
2599 fspp_filter_deps="gpl"
2600 geq_filter_deps="gpl"
2601 histeq_filter_deps="gpl"
2602 hqdn3d_filter_deps="gpl"
2603 interlace_filter_deps="gpl"
2604 kerndeint_filter_deps="gpl"
2605 ladspa_filter_deps="ladspa dlopen"
2606 mcdeint_filter_deps="avcodec gpl"
2607 movie_filter_deps="avcodec avformat"
2608 mpdecimate_filter_deps="gpl"
2609 mpdecimate_filter_select="pixelutils"
2610 mptestsrc_filter_deps="gpl"
2611 negate_filter_deps="lut_filter"
2612 perspective_filter_deps="gpl"
2613 pp7_filter_deps="gpl"
2614 ocv_filter_deps="libopencv"
2615 owdenoise_filter_deps="gpl"
2616 pan_filter_deps="swresample"
2617 phase_filter_deps="gpl"
2618 pp_filter_deps="gpl postproc"
2619 pullup_filter_deps="gpl"
2620 removelogo_filter_deps="avcodec avformat swscale"
2621 repeatfields_filter_deps="gpl"
2622 resample_filter_deps="avresample"
2623 sab_filter_deps="gpl swscale"
2624 scale_filter_deps="swscale"
2625 select_filter_select="pixelutils"
2626 smartblur_filter_deps="gpl swscale"
2627 showspectrum_filter_deps="avcodec"
2628 showspectrum_filter_select="rdft"
2629 spp_filter_deps="gpl avcodec"
2630 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2631 stereo3d_filter_deps="gpl"
2632 subtitles_filter_deps="avformat avcodec libass"
2633 super2xsai_filter_deps="gpl"
2634 tinterlace_filter_deps="gpl"
2635 vidstabdetect_filter_deps="libvidstab"
2636 vidstabtransform_filter_deps="libvidstab"
2637 pixfmts_super2xsai_test_deps="super2xsai_filter"
2638 tinterlace_merge_test_deps="tinterlace_filter"
2639 tinterlace_pad_test_deps="tinterlace_filter"
2640 uspp_filter_deps="gpl avcodec"
2641 zmq_filter_deps="libzmq"
2642 zoompan_filter_deps="swscale"
2643
2644 # examples
2645 avio_reading="avformat avcodec avutil"
2646 avcodec_example_deps="avcodec avutil"
2647 decoding_encoding_example_deps="avcodec avformat avutil"
2648 demuxing_decoding_example_deps="avcodec avformat avutil"
2649 extract_mvs_example_deps="avcodec avformat avutil"
2650 filter_audio_example_deps="avfilter avutil"
2651 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2652 filtering_video_example_deps="avfilter avcodec avformat avutil"
2653 metadata_example_deps="avformat avutil"
2654 muxing_example_deps="avcodec avformat avutil swscale"
2655 remuxing_example_deps="avcodec avformat avutil"
2656 resampling_audio_example_deps="avutil swresample"
2657 scaling_video_example_deps="avutil swscale"
2658 transcode_aac_example_deps="avcodec avformat swresample"
2659 transcoding_example_deps="avfilter avcodec avformat avutil"
2660
2661 # libraries, in linking order
2662 avcodec_deps="avutil"
2663 avdevice_deps="avformat avcodec avutil"
2664 avfilter_deps="avutil"
2665 avformat_deps="avcodec avutil"
2666 avresample_deps="avutil"
2667 postproc_deps="avutil gpl"
2668 swresample_deps="avutil"
2669 swscale_deps="avutil"
2670
2671 # programs
2672 ffmpeg_deps="avcodec avfilter avformat swresample"
2673 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2674                null_filter
2675                setpts_filter trim_filter"
2676 ffplay_deps="avcodec avformat swscale swresample sdl"
2677 ffplay_libs='$sdl_libs'
2678 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2679 ffprobe_deps="avcodec avformat"
2680 ffserver_deps="avformat fork sarestart"
2681 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2682
2683 # documentation
2684 podpages_deps="perl"
2685 manpages_deps="perl pod2man"
2686 htmlpages_deps="perl"
2687 htmlpages_deps_any="makeinfo_html texi2html"
2688 txtpages_deps="perl makeinfo"
2689 doc_deps_any="manpages htmlpages podpages txtpages"
2690
2691 # default parameters
2692
2693 logfile="config.log"
2694
2695 # installation paths
2696 prefix_default="/usr/local"
2697 bindir_default='${prefix}/bin'
2698 datadir_default='${prefix}/share/ffmpeg'
2699 docdir_default='${prefix}/share/doc/ffmpeg'
2700 incdir_default='${prefix}/include'
2701 libdir_default='${prefix}/lib'
2702 mandir_default='${prefix}/share/man'
2703
2704 # toolchain
2705 ar_default="ar"
2706 cc_default="gcc"
2707 cxx_default="g++"
2708 host_cc_default="gcc"
2709 cp_f="cp -f"
2710 doxygen_default="doxygen"
2711 install="install"
2712 ln_s="ln -s -f"
2713 nm_default="nm -g"
2714 objformat="elf"
2715 pkg_config_default=pkg-config
2716 if ranlib 2>&1 | grep -q "\-D "; then
2717     ranlib_default="ranlib -D"
2718 else
2719     ranlib_default="ranlib"
2720 fi
2721 strip_default="strip"
2722 yasmexe_default="yasm"
2723 windres_default="windres"
2724
2725 # OS
2726 target_os_default=$(tolower $(uname -s))
2727 host_os=$target_os_default
2728
2729 # machine
2730 if test "$target_os_default" = aix; then
2731     arch_default=$(uname -p)
2732     strip_default="strip -X32_64"
2733 else
2734     arch_default=$(uname -m)
2735 fi
2736 cpu="generic"
2737 intrinsics="none"
2738
2739 # configurable options
2740 enable $PROGRAM_LIST
2741 enable $DOCUMENT_LIST
2742 enable $EXAMPLE_LIST
2743 enable $(filter_out avresample $LIBRARY_LIST)
2744 enable stripping
2745
2746 enable asm
2747 enable debug
2748 enable doc
2749 enable faan faandct faanidct
2750 enable optimizations
2751 enable runtime_cpudetect
2752 enable safe_bitstream_reader
2753 enable static
2754 enable swscale_alpha
2755
2756 sws_max_filter_size_default=256
2757 set_default sws_max_filter_size
2758
2759 # Enable hwaccels by default.
2760 enable dxva2 vaapi vda vdpau xvmc
2761 enable xlib
2762
2763 # build settings
2764 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2765 LIBPREF="lib"
2766 LIBSUF=".a"
2767 FULLNAME='$(NAME)$(BUILDSUF)'
2768 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2769 SLIBPREF="lib"
2770 SLIBSUF=".so"
2771 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2772 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2773 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2774 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2775 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2776 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2777
2778 asflags_filter=echo
2779 cflags_filter=echo
2780 ldflags_filter=echo
2781
2782 AS_C='-c'
2783 AS_O='-o $@'
2784 CC_C='-c'
2785 CC_E='-E -o $@'
2786 CC_O='-o $@'
2787 CXX_C='-c'
2788 CXX_O='-o $@'
2789 LD_O='-o $@'
2790 LD_LIB='-l%'
2791 LD_PATH='-L'
2792 HOSTCC_C='-c'
2793 HOSTCC_E='-E -o $@'
2794 HOSTCC_O='-o $@'
2795 HOSTLD_O='-o $@'
2796
2797 host_libs='-lm'
2798 host_cflags_filter=echo
2799 host_ldflags_filter=echo
2800
2801 target_path='$(CURDIR)'
2802
2803 # since the object filename is not given with the -MM flag, the compiler
2804 # is only able to print the basename, and we must add the path ourselves
2805 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2806 DEPFLAGS='-MM'
2807
2808 # find source path
2809 if test -f configure; then
2810     source_path=.
2811 else
2812     source_path=$(cd $(dirname "$0"); pwd)
2813     echo "$source_path" | grep -q '[[:blank:]]' &&
2814         die "Out of tree builds are impossible with whitespace in source path."
2815     test -e "$source_path/config.h" &&
2816         die "Out of tree builds are impossible with config.h in source dir."
2817 fi
2818
2819 for v in "$@"; do
2820     r=${v#*=}
2821     l=${v%"$r"}
2822     r=$(sh_quote "$r")
2823     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2824 done
2825
2826 find_things(){
2827     thing=$1
2828     pattern=$2
2829     file=$source_path/$3
2830     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2831 }
2832
2833 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2834 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2835 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2836 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2837 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2838 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2839 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2840 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2841 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2842 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2843 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2844
2845 ALL_COMPONENTS="
2846     $BSF_LIST
2847     $DECODER_LIST
2848     $DEMUXER_LIST
2849     $ENCODER_LIST
2850     $FILTER_LIST
2851     $HWACCEL_LIST
2852     $INDEV_LIST
2853     $MUXER_LIST
2854     $OUTDEV_LIST
2855     $PARSER_LIST
2856     $PROTOCOL_LIST
2857 "
2858
2859 for n in $COMPONENT_LIST; do
2860     v=$(toupper ${n%s})_LIST
2861     eval enable \$$v
2862     eval ${n}_if_any="\$$v"
2863 done
2864
2865 enable $ARCH_EXT_LIST
2866
2867 die_unknown(){
2868     echo "Unknown option \"$1\"."
2869     echo "See $0 --help for available options."
2870     exit 1
2871 }
2872
2873 print_3_columns() {
2874     cat | tr ' ' '\n' | sort | pr -r -3 -t
2875 }
2876
2877 show_list() {
2878     suffix=_$1
2879     shift
2880     echo $* | sed s/$suffix//g | print_3_columns
2881     exit 0
2882 }
2883
2884 rand_list(){
2885     IFS=', '
2886     set -- $*
2887     unset IFS
2888     for thing; do
2889         comp=${thing%:*}
2890         prob=${thing#$comp}
2891         prob=${prob#:}
2892         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2893         echo "prob ${prob:-0.5}"
2894         printf '%s\n' $comp
2895     done
2896 }
2897
2898 do_random(){
2899     action=$1
2900     shift
2901     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2902     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2903 }
2904
2905 for opt do
2906     optval="${opt#*=}"
2907     case "$opt" in
2908         --extra-ldflags=*)
2909             add_ldflags $optval
2910         ;;
2911         --extra-ldexeflags=*)
2912             add_ldexeflags $optval
2913         ;;
2914         --extra-libs=*)
2915             add_extralibs $optval
2916         ;;
2917         --disable-devices)
2918             disable $INDEV_LIST $OUTDEV_LIST
2919         ;;
2920         --enable-debug=*)
2921             debuglevel="$optval"
2922         ;;
2923         --disable-programs)
2924             disable $PROGRAM_LIST
2925         ;;
2926         --disable-everything)
2927             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2928         ;;
2929         --disable-all)
2930             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2931             disable $LIBRARY_LIST $PROGRAM_LIST doc
2932         ;;
2933         --enable-random|--disable-random)
2934             action=${opt%%-random}
2935             do_random ${action#--} $COMPONENT_LIST
2936         ;;
2937         --enable-random=*|--disable-random=*)
2938             action=${opt%%-random=*}
2939             do_random ${action#--} $optval
2940         ;;
2941         --enable-*=*|--disable-*=*)
2942             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2943             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2944             eval list=\$$(toupper $thing)_LIST
2945             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2946             list=$(filter "$name" $list)
2947             [ "$list" = "" ] && warn "Option $opt did not match anything"
2948             $action $list
2949         ;;
2950         --enable-?*|--disable-?*)
2951             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2952             if is_in $option $COMPONENT_LIST; then
2953                 test $action = disable && action=unset
2954                 eval $action \$$(toupper ${option%s})_LIST
2955             elif is_in $option $CMDLINE_SELECT; then
2956                 $action $option
2957             else
2958                 die_unknown $opt
2959             fi
2960         ;;
2961         --list-*)
2962             NAME="${opt#--list-}"
2963             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2964             NAME=${NAME%s}
2965             eval show_list $NAME \$$(toupper $NAME)_LIST
2966         ;;
2967         --help|-h) show_help
2968         ;;
2969         --fatal-warnings) enable fatal_warnings
2970         ;;
2971         *)
2972             optname="${opt%%=*}"
2973             optname="${optname#--}"
2974             optname=$(echo "$optname" | sed 's/-/_/g')
2975             if is_in $optname $CMDLINE_SET; then
2976                 eval $optname='$optval'
2977             elif is_in $optname $CMDLINE_APPEND; then
2978                 append $optname "$optval"
2979             else
2980                 die_unknown $opt
2981             fi
2982         ;;
2983     esac
2984 done
2985
2986 disabled logging && logfile=/dev/null
2987
2988 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2989 set >> $logfile
2990
2991 test -n "$cross_prefix" && enable cross_compile
2992
2993 if enabled cross_compile; then
2994     test -n "$arch" && test -n "$target_os" ||
2995         die "Must specify target arch and OS when cross-compiling"
2996 fi
2997
2998 ar_default="${cross_prefix}${ar_default}"
2999 cc_default="${cross_prefix}${cc_default}"
3000 cxx_default="${cross_prefix}${cxx_default}"
3001 nm_default="${cross_prefix}${nm_default}"
3002 pkg_config_default="${cross_prefix}${pkg_config_default}"
3003 ranlib_default="${cross_prefix}${ranlib_default}"
3004 strip_default="${cross_prefix}${strip_default}"
3005 windres_default="${cross_prefix}${windres_default}"
3006
3007 sysinclude_default="${sysroot}/usr/include"
3008
3009 test -n "$valgrind" && toolchain="valgrind-memcheck"
3010
3011 case "$toolchain" in
3012     clang-asan)
3013         cc_default="clang"
3014         add_cflags  -fsanitize=address
3015         add_ldflags -fsanitize=address
3016     ;;
3017     clang-tsan)
3018         cc_default="clang"
3019         add_cflags  -fsanitize=thread -pie
3020         add_ldflags -fsanitize=thread -pie
3021     ;;
3022     clang-usan)
3023         cc_default="clang"
3024         add_cflags  -fsanitize=undefined
3025         add_ldflags -fsanitize=undefined
3026     ;;
3027     gcc-asan)
3028         cc_default="gcc"
3029         add_cflags  -fsanitize=address
3030         add_ldflags -fsanitize=address
3031     ;;
3032     gcc-tsan)
3033         cc_default="gcc"
3034         add_cflags  -fsanitize=thread -pie -fPIC
3035         add_ldflags -fsanitize=thread -pie -fPIC
3036     ;;
3037     gcc-usan)
3038         cc_default="gcc"
3039         add_cflags  -fsanitize=undefined
3040         add_ldflags -fsanitize=undefined
3041     ;;
3042     valgrind-massif)
3043         target_exec_default=${valgrind:-"valgrind"}
3044         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"
3045     ;;
3046     valgrind-memcheck)
3047         target_exec_default=${valgrind:-"valgrind"}
3048         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3049     ;;
3050     msvc)
3051         # Check whether the current MSVC version needs the C99 converter.
3052         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3053         # support enough of C99 to build ffmpeg. Default to the new
3054         # behaviour if the regexp was unable to match anything, since this
3055         # successfully parses the version number of existing supported
3056         # versions that require the converter (MSVC 2010 and 2012).
3057         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3058         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3059             cc_default="cl"
3060         else
3061             cc_default="c99wrap cl"
3062         fi
3063         ld_default="link"
3064         nm_default="dumpbin -symbols"
3065         ar_default="lib"
3066         target_os_default="win32"
3067         # Use a relative path for TMPDIR. This makes sure all the
3068         # ffconf temp files are written with a relative path, avoiding
3069         # issues with msys/win32 path conversion for MSVC parameters
3070         # such as -Fo<file> or -out:<file>.
3071         TMPDIR=.
3072     ;;
3073     icl)
3074         cc_default="icl"
3075         ld_default="xilink"
3076         nm_default="dumpbin -symbols"
3077         ar_default="xilib"
3078         target_os_default="win32"
3079         TMPDIR=.
3080     ;;
3081     gcov)
3082         add_cflags  -fprofile-arcs -ftest-coverage
3083         add_ldflags -fprofile-arcs -ftest-coverage
3084     ;;
3085     hardened)
3086         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3087         add_cflags   -fno-strict-overflow -fstack-protector-all
3088         add_ldflags  -Wl,-z,relro -Wl,-z,now
3089     ;;
3090     ?*)
3091         die "Unknown toolchain $toolchain"
3092     ;;
3093 esac
3094
3095 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3096     target_exec target_os yasmexe
3097 enabled cross_compile || host_cc_default=$cc
3098 set_default host_cc
3099
3100 pkg_config_fail_message=""
3101 if ! $pkg_config --version >/dev/null 2>&1; then
3102     warn "$pkg_config not found, library detection may fail."
3103     pkg_config=false
3104 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3105     pkg_config_fail_message="
3106 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3107 fi
3108
3109 if test $doxygen != $doxygen_default && \
3110   ! $doxygen --version >/dev/null 2>&1; then
3111     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3112 fi
3113
3114 exesuf() {
3115     case $1 in
3116         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3117     esac
3118 }
3119
3120 EXESUF=$(exesuf $target_os)
3121 HOSTEXESUF=$(exesuf $host_os)
3122
3123 # set temporary file name
3124 : ${TMPDIR:=$TEMPDIR}
3125 : ${TMPDIR:=$TMP}
3126 : ${TMPDIR:=/tmp}
3127
3128 if [ -n "$tempprefix" ] ; then
3129     mktemp(){
3130         echo $tempprefix.${HOSTNAME}.${UID}
3131     }
3132 elif ! check_cmd mktemp -u XXXXXX; then
3133     # simple replacement for missing mktemp
3134     # NOT SAFE FOR GENERAL USE
3135     mktemp(){
3136         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3137     }
3138 fi
3139
3140 tmpfile(){
3141     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3142         (set -C; exec > $tmp) 2>/dev/null ||
3143         die "Unable to create temporary file in $TMPDIR."
3144     append TMPFILES $tmp
3145     eval $1=$tmp
3146 }
3147
3148 trap 'rm -f -- $TMPFILES' EXIT
3149
3150 tmpfile TMPASM .asm
3151 tmpfile TMPC   .c
3152 tmpfile TMPCPP .cpp
3153 tmpfile TMPE   $EXESUF
3154 tmpfile TMPH   .h
3155 tmpfile TMPM   .m
3156 tmpfile TMPO   .o
3157 tmpfile TMPS   .S
3158 tmpfile TMPSH  .sh
3159 tmpfile TMPV   .ver
3160
3161 unset -f mktemp
3162
3163 chmod +x $TMPE
3164
3165 # make sure we can execute files in $TMPDIR
3166 cat > $TMPSH 2>> $logfile <<EOF
3167 #! /bin/sh
3168 EOF
3169 chmod +x $TMPSH >> $logfile 2>&1
3170 if ! $TMPSH >> $logfile 2>&1; then
3171     cat <<EOF
3172 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3173 variable to another directory and make sure that it is not mounted noexec.
3174 EOF
3175     die "Sanity test failed."
3176 fi
3177
3178 armasm_flags(){
3179     for flag; do
3180         case $flag in
3181             # Filter out MSVC cl.exe options from cflags that shouldn't
3182             # be passed to gas-preprocessor
3183             -M[TD]*)                                            ;;
3184             *)                  echo $flag                      ;;
3185         esac
3186    done
3187 }
3188
3189 ccc_flags(){
3190     for flag; do
3191         case $flag in
3192             -std=c99)           echo -c99                       ;;
3193             -mcpu=*)            echo -arch ${flag#*=}           ;;
3194             -mieee)             echo -ieee                      ;;
3195             -O*|-fast)          echo $flag                      ;;
3196             -fno-math-errno)    echo -assume nomath_errno       ;;
3197             -g)                 echo -g3                        ;;
3198             -Wall)              echo -msg_enable level2         ;;
3199             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3200             -Wl,*)              echo $flag                      ;;
3201             -f*|-W*)                                            ;;
3202             *)                  echo $flag                      ;;
3203         esac
3204    done
3205 }
3206
3207 cparser_flags(){
3208     for flag; do
3209         case $flag in
3210             -Wno-switch)             echo -Wno-switch-enum ;;
3211             -Wno-format-zero-length) ;;
3212             -Wdisabled-optimization) ;;
3213             -Wno-pointer-sign)       echo -Wno-other ;;
3214             *)                       echo $flag ;;
3215         esac
3216     done
3217 }
3218
3219 msvc_common_flags(){
3220     for flag; do
3221         case $flag in
3222             # In addition to specifying certain flags under the compiler
3223             # specific filters, they must be specified here as well or else the
3224             # generic catch all at the bottom will print the original flag.
3225             -Wall)                ;;
3226             -std=c99)             ;;
3227             # Common flags
3228             -fomit-frame-pointer) ;;
3229             -g)                   echo -Z7 ;;
3230             -fno-math-errno)      ;;
3231             -fno-common)          ;;
3232             -fno-signed-zeros)    ;;
3233             -fPIC)                ;;
3234             -mthumb)              ;;
3235             -march=*)             ;;
3236             -lz)                  echo zlib.lib ;;
3237             -lavifil32)           echo vfw32.lib ;;
3238             -lavicap32)           echo vfw32.lib user32.lib ;;
3239             -l*)                  echo ${flag#-l}.lib ;;
3240             -L*)                  echo -libpath:${flag#-L} ;;
3241             *)                    echo $flag ;;
3242         esac
3243     done
3244 }
3245
3246 msvc_flags(){
3247     msvc_common_flags "$@"
3248     for flag; do
3249         case $flag in
3250             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3251                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3252                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3253                                        -wd4554 \
3254                                        -wd4273 -wd4701 ;;
3255         esac
3256     done
3257 }
3258
3259 icl_flags(){
3260     msvc_common_flags "$@"
3261     for flag; do
3262         case $flag in
3263             # Despite what Intel's documentation says -Wall, which is supported
3264             # on Windows, does enable remarks so disable them here.
3265             -Wall)                echo $flag -Qdiag-disable:remark ;;
3266             -std=c99)             echo -Qstd=c99 ;;
3267             -flto)                echo -ipo ;;
3268         esac
3269     done
3270 }
3271
3272 icc_flags(){
3273     for flag; do
3274         case $flag in
3275             -flto)                echo -ipo ;;
3276             *)                    echo $flag ;;
3277         esac
3278     done
3279 }
3280
3281 pgi_flags(){
3282     for flag; do
3283         case $flag in
3284             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3285             -fomit-frame-pointer) echo -Mnoframe ;;
3286             -g)                   echo -gopt ;;
3287             *)                    echo $flag ;;
3288         esac
3289     done
3290 }
3291
3292 suncc_flags(){
3293     for flag; do
3294         case $flag in
3295             -march=*|-mcpu=*)
3296                 case "${flag#*=}" in
3297                     native)                   echo -xtarget=native       ;;
3298                     v9|niagara)               echo -xarch=sparc          ;;
3299                     ultrasparc)               echo -xarch=sparcvis       ;;
3300                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3301                     i586|pentium)             echo -xchip=pentium        ;;
3302                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3303                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3304                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3305                     pentium4*)          echo -xtarget=pentium4           ;;
3306                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3307                     *-sse3)             echo -xarch=sse3                 ;;
3308                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3309                     bonnell)                   echo -xarch=ssse3         ;;
3310                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3311                     westmere)                  echo -xtarget=westmere    ;;
3312                     silvermont)                echo -xarch=sse4_2        ;;
3313                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3314                     core-avx*|ivybridge|haswell|broadwell)
3315                                                echo -xarch=avx           ;;
3316                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3317                     btver1)                    echo -xarch=amdsse4a      ;;
3318                     btver2|bdver*)             echo -xarch=avx           ;;
3319                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3320                     k8|opteron|athlon64|athlon-fx)
3321                                                echo -xarch=sse2a         ;;
3322                     athlon*)                   echo -xarch=pentium_proa  ;;
3323                 esac
3324                 ;;
3325             -std=c99)             echo -xc99              ;;
3326             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3327             -fPIC)                echo -KPIC -xcode=pic32 ;;
3328             -W*,*)                echo $flag              ;;
3329             -f*-*|-W*|-mimpure-text)                      ;;
3330             -shared)              echo -G                 ;;
3331             *)                    echo $flag              ;;
3332         esac
3333     done
3334 }
3335
3336 tms470_flags(){
3337     for flag; do
3338         case $flag in
3339             -march=*|-mcpu=*)
3340                 case "${flag#*=}" in
3341                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3342                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3343                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3344                     armv6*|arm11*)          echo -mv=6   ;;
3345                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3346                                             echo -mv=5e  ;;
3347                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3348                 esac
3349                 ;;
3350             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3351             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3352             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3353             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3354             -msoft-float)   echo --float_support=vfplib       ;;
3355             -O[0-3]|-mf=*)  echo $flag                        ;;
3356             -g)             echo -g -mn                       ;;
3357             -pds=*)         echo $flag                        ;;
3358             -D*|-I*)        echo $flag                        ;;
3359             --gcc|--abi=*)  echo $flag                        ;;
3360             -me)            echo $flag                        ;;
3361         esac
3362     done
3363 }
3364
3365 probe_cc(){
3366     pfx=$1
3367     _cc=$2
3368
3369     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3370     unset _ld_o _ldflags _ld_lib _ld_path
3371     unset _depflags _DEPCMD _DEPFLAGS
3372     _flags_filter=echo
3373
3374     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3375         true # no-op to avoid reading stdin in following checks
3376     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3377         _type=llvm_gcc
3378         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3379         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3380         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3381         _cflags_speed='-O3'
3382         _cflags_size='-Os'
3383     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3384         _type=gcc
3385         gcc_version=$($_cc --version | head -n1)
3386         gcc_basever=$($_cc -dumpversion)
3387         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3388         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3389         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3390         if ! $_cc -dumpversion | grep -q '^2\.'; then
3391             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3392         fi
3393         _cflags_speed='-O3'
3394         _cflags_size='-Os'
3395     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3396         _type=icc
3397         _ident=$($_cc --version | head -n1)
3398         _depflags='-MMD'
3399         _cflags_speed='-O3'
3400         _cflags_size='-Os'
3401         _cflags_noopt='-O1'
3402         _flags_filter=icc_flags
3403     elif $_cc -v 2>&1 | grep -q xlc; then
3404         _type=xlc
3405         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3406         _cflags_speed='-O5'
3407         _cflags_size='-O5 -qcompact'
3408     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3409         _type=ccc
3410         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3411         _DEPFLAGS='-M'
3412         _cflags_speed='-fast'
3413         _cflags_size='-O1'
3414         _flags_filter=ccc_flags
3415     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3416         test -d "$sysroot" || die "No valid sysroot specified."
3417         _type=armcc
3418         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3419         armcc_conf="$PWD/armcc.conf"
3420         $_cc --arm_linux_configure                 \
3421              --arm_linux_config_file="$armcc_conf" \
3422              --configure_sysroot="$sysroot"        \
3423              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3424              die "Error creating armcc configuration file."
3425         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3426         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3427         as_default="${cross_prefix}gcc"
3428         _depflags='-MMD'
3429         _cflags_speed='-O3'
3430         _cflags_size='-Os'
3431     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3432         _type=tms470
3433         _ident=$($_cc -version | head -n1 | tr -s ' ')
3434         _flags='--gcc --abi=eabi -me'
3435         _cc_e='-ppl -fe=$@'
3436         _cc_o='-fe=$@'
3437         _depflags='-ppa -ppd=$(@:.o=.d)'
3438         _cflags_speed='-O3 -mf=5'
3439         _cflags_size='-O3 -mf=2'
3440         _flags_filter=tms470_flags
3441     elif $_cc -v 2>&1 | grep -q clang; then
3442         _type=clang
3443         _ident=$($_cc --version | head -n1)
3444         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3445         _cflags_speed='-O3'
3446         _cflags_size='-Os'
3447     elif $_cc -V 2>&1 | grep -q Sun; then
3448         _type=suncc
3449         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3450         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3451         _DEPFLAGS='-xM1 -xc99'
3452         _ldflags='-std=c99'
3453         _cflags_speed='-O5'
3454         _cflags_size='-O5 -xspace'
3455         _flags_filter=suncc_flags
3456     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3457         _type=pathscale
3458         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3459         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3460         _cflags_speed='-O2'
3461         _cflags_size='-Os'
3462         _flags_filter='filter_out -Wdisabled-optimization'
3463     elif $_cc -v 2>&1 | grep -q Open64; then
3464         _type=open64
3465         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3466         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3467         _cflags_speed='-O2'
3468         _cflags_size='-Os'
3469         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3470     elif $_cc -V 2>&1 | grep -q Portland; then
3471         _type=pgi
3472         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3473         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3474         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3475         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3476         _cflags_noopt="-O"
3477         _flags_filter=pgi_flags
3478     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3479         _type=armasm
3480         _ident=$($_cc | head -n1)
3481         # 4509: "This form of conditional instruction is deprecated"
3482         _flags="-nologo -ignore 4509"
3483         _flags_filter=armasm_flags
3484     elif $_cc 2>&1 | grep -q Intel; then
3485         _type=icl
3486         _ident=$($cc 2>&1 | head -n1)
3487         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3488         # Not only is O3 broken on 13.x+ but it is slower on all previous
3489         # versions (tested) as well.
3490         _cflags_speed="-O2"
3491         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3492         if $_cc 2>&1 | grep -q Linker; then
3493             _ld_o='-out:$@'
3494         else
3495             _ld_o='-Fe$@'
3496         fi
3497         _cc_o='-Fo$@'
3498         _cc_e='-P'
3499         _flags_filter=icl_flags
3500         _ld_lib='lib%.a'
3501         _ld_path='-libpath:'
3502         # -Qdiag-error to make icl error when seeing certain unknown arguments
3503         _flags='-nologo -Qdiag-error:4044,10157'
3504         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3505         # with MSVC which enables it by default.
3506         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3507         if [ $pfx = hostcc ]; then
3508             append _cflags -Dsnprintf=_snprintf
3509         fi
3510         disable stripping
3511     elif $_cc 2>&1 | grep -q Microsoft; then
3512         _type=msvc
3513         _ident=$($cc 2>&1 | head -n1)
3514         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3515         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3516         _cflags_speed="-O2"
3517         _cflags_size="-O1"
3518         if $_cc 2>&1 | grep -q Linker; then
3519             _ld_o='-out:$@'
3520         else
3521             _ld_o='-Fe$@'
3522         fi
3523         _cc_o='-Fo$@'
3524         _cc_e='-P -Fi$@'
3525         _flags_filter=msvc_flags
3526         _ld_lib='lib%.a'
3527         _ld_path='-libpath:'
3528         _flags='-nologo'
3529         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3530         if [ $pfx = hostcc ]; then
3531             append _cflags -Dsnprintf=_snprintf
3532         fi
3533         disable stripping
3534     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3535         _type=cparser
3536         _ident=$($_cc --version | head -n1)
3537         _depflags='-MMD'
3538         _cflags_speed='-O4'
3539         _cflags_size='-O2'
3540         _flags_filter=cparser_flags
3541     fi
3542
3543     eval ${pfx}_type=\$_type
3544     eval ${pfx}_ident=\$_ident
3545 }
3546
3547 set_ccvars(){
3548     eval ${1}_C=\${_cc_c-\${${1}_C}}
3549     eval ${1}_E=\${_cc_e-\${${1}_E}}
3550     eval ${1}_O=\${_cc_o-\${${1}_O}}
3551
3552     if [ -n "$_depflags" ]; then
3553         eval ${1}_DEPFLAGS=\$_depflags
3554     else
3555         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3556         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3557         eval DEP${1}FLAGS=\$_flags
3558     fi
3559 }
3560
3561 probe_cc cc "$cc"
3562 cflags_filter=$_flags_filter
3563 cflags_speed=$_cflags_speed
3564 cflags_size=$_cflags_size
3565 cflags_noopt=$_cflags_noopt
3566 add_cflags $_flags $_cflags
3567 cc_ldflags=$_ldflags
3568 set_ccvars CC
3569
3570 probe_cc hostcc "$host_cc"
3571 host_cflags_filter=$_flags_filter
3572 add_host_cflags  $_flags $_cflags
3573 set_ccvars HOSTCC
3574
3575 test -n "$cc_type" && enable $cc_type ||
3576     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3577
3578 : ${as_default:=$cc}
3579 : ${dep_cc_default:=$cc}
3580 : ${ld_default:=$cc}
3581 : ${host_ld_default:=$host_cc}
3582 set_default ar as dep_cc ld host_ld windres
3583
3584 probe_cc as "$as"
3585 asflags_filter=$_flags_filter
3586 add_asflags $_flags $_cflags
3587 set_ccvars AS
3588
3589 probe_cc ld "$ld"
3590 ldflags_filter=$_flags_filter
3591 add_ldflags $_flags $_ldflags
3592 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3593 LD_O=${_ld_o-$LD_O}
3594 LD_LIB=${_ld_lib-$LD_LIB}
3595 LD_PATH=${_ld_path-$LD_PATH}
3596
3597 probe_cc hostld "$host_ld"
3598 host_ldflags_filter=$_flags_filter
3599 add_host_ldflags $_flags $_ldflags
3600 HOSTLD_O=${_ld_o-$HOSTLD_O}
3601
3602 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3603     probe_cc depcc "$dep_cc"
3604     CCDEP=${_DEPCMD:-$DEPCMD}
3605     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3606     DEPCCFLAGS=$_flags
3607 fi
3608
3609 if $ar 2>&1 | grep -q Microsoft; then
3610     arflags="-nologo"
3611     ar_o='-out:$@'
3612 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3613     arflags="rq"
3614     ar_o='$@'
3615 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3616     arflags='-Xany -r -c'
3617     ar_o='$@'
3618 elif $ar 2>&1 | grep -q "\[D\] "; then
3619     arflags="rcD"
3620     ar_o='$@'
3621 else
3622     arflags="rc"
3623     ar_o='$@'
3624 fi
3625
3626 add_cflags $extra_cflags
3627 add_cxxflags $extra_cxxflags
3628 add_asflags $extra_cflags
3629
3630 if test -n "$sysroot"; then
3631     case "$cc_type" in
3632         gcc|llvm_gcc|clang)
3633             add_cppflags --sysroot="$sysroot"
3634             add_ldflags --sysroot="$sysroot"
3635 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3636             add_cppflags -isysroot "$sysroot"
3637             add_ldflags -isysroot "$sysroot"
3638         ;;
3639         tms470)
3640             add_cppflags -I"$sysinclude"
3641             add_ldflags  --sysroot="$sysroot"
3642         ;;
3643     esac
3644 fi
3645
3646 if test "$cpu" = host; then
3647     enabled cross_compile &&
3648         die "--cpu=host makes no sense when cross-compiling."
3649
3650     case "$cc_type" in
3651         gcc|llvm_gcc)
3652             check_native(){
3653                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3654                 sed -n "/cc1.*$1=/{
3655                             s/.*$1=\\([^ ]*\\).*/\\1/
3656                             p
3657                             q
3658                         }" $TMPE
3659             }
3660             cpu=$(check_native -march || check_native -mcpu)
3661         ;;
3662     esac
3663
3664     test "${cpu:-host}" = host &&
3665         die "--cpu=host not supported with compiler $cc"
3666 fi
3667
3668 # Deal with common $arch aliases
3669 case "$arch" in
3670     aarch64|arm64)
3671         arch="aarch64"
3672     ;;
3673     arm*|iPad*|iPhone*)
3674         arch="arm"
3675     ;;
3676     mips*|IP*)
3677         arch="mips"
3678     ;;
3679     parisc*|hppa*)
3680         arch="parisc"
3681     ;;
3682     "Power Macintosh"|ppc*|powerpc*)
3683         arch="ppc"
3684     ;;
3685     s390|s390x)
3686         arch="s390"
3687     ;;
3688     sh4|sh)
3689         arch="sh4"
3690     ;;
3691     sun4u|sparc*)
3692         arch="sparc"
3693     ;;
3694     tilegx|tile-gx)
3695         arch="tilegx"
3696     ;;
3697     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3698         arch="x86"
3699     ;;
3700 esac
3701
3702 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3703 enable $arch
3704
3705 # Add processor-specific flags
3706 if enabled aarch64; then
3707
3708     case $cpu in
3709         armv*)
3710             cpuflags="-march=$cpu"
3711         ;;
3712         *)
3713             cpuflags="-mcpu=$cpu"
3714         ;;
3715     esac
3716
3717 elif enabled alpha; then
3718
3719     cpuflags="-mcpu=$cpu"
3720
3721 elif enabled arm; then
3722
3723     check_arm_arch() {
3724         check_cpp_condition stddef.h \
3725             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3726             $cpuflags
3727     }
3728
3729     probe_arm_arch() {
3730         if   check_arm_arch 4;        then echo armv4;
3731         elif check_arm_arch 4T;       then echo armv4t;
3732         elif check_arm_arch 5;        then echo armv5;
3733         elif check_arm_arch 5E;       then echo armv5e;
3734         elif check_arm_arch 5T;       then echo armv5t;
3735         elif check_arm_arch 5TE;      then echo armv5te;
3736         elif check_arm_arch 5TEJ;     then echo armv5te;
3737         elif check_arm_arch 6;        then echo armv6;
3738         elif check_arm_arch 6J;       then echo armv6j;
3739         elif check_arm_arch 6K;       then echo armv6k;
3740         elif check_arm_arch 6Z;       then echo armv6z;
3741         elif check_arm_arch 6ZK;      then echo armv6zk;
3742         elif check_arm_arch 6T2;      then echo armv6t2;
3743         elif check_arm_arch 7;        then echo armv7;
3744         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3745         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3746         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3747         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3748         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3749         fi
3750     }
3751
3752     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3753
3754     case $cpu in
3755         armv*)
3756             cpuflags="-march=$cpu"
3757             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3758         ;;
3759         *)
3760             cpuflags="-mcpu=$cpu"
3761             case $cpu in
3762                 cortex-a*)                               subarch=armv7a  ;;
3763                 cortex-r*)                               subarch=armv7r  ;;
3764                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3765                 arm11*)                                  subarch=armv6   ;;
3766                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3767                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3768                 *)                             subarch=$(probe_arm_arch) ;;
3769             esac
3770         ;;
3771     esac
3772
3773     case "$subarch" in
3774         armv5t*)    enable fast_clz                ;;
3775         armv[6-8]*)
3776             enable fast_clz
3777             disabled fast_unaligned || enable fast_unaligned
3778             ;;
3779     esac
3780
3781 elif enabled avr32; then
3782
3783     case $cpu in
3784         ap7[02]0[0-2])
3785             subarch="avr32_ap"
3786             cpuflags="-mpart=$cpu"
3787         ;;
3788         ap)
3789             subarch="avr32_ap"
3790             cpuflags="-march=$cpu"
3791         ;;
3792         uc3[ab]*)
3793             subarch="avr32_uc"
3794             cpuflags="-mcpu=$cpu"
3795         ;;
3796         uc)
3797             subarch="avr32_uc"
3798             cpuflags="-march=$cpu"
3799         ;;
3800     esac
3801
3802 elif enabled bfin; then
3803
3804     cpuflags="-mcpu=$cpu"
3805
3806 elif enabled mips; then
3807
3808     cpuflags="-march=$cpu"
3809
3810     case $cpu in
3811         24kc)
3812             disable mipsfpu
3813             disable mipsdspr1
3814             disable mipsdspr2
3815         ;;
3816         24kf*)
3817             disable mipsdspr1
3818             disable mipsdspr2
3819         ;;
3820         24kec|34kc|1004kc)
3821             disable mipsfpu
3822             disable mipsdspr2
3823         ;;
3824         24kef*|34kf*|1004kf*)
3825             disable mipsdspr2
3826         ;;
3827         74kc)
3828             disable mipsfpu
3829         ;;
3830     esac
3831
3832 elif enabled ppc; then
3833
3834     disable ldbrx
3835     disable vsx
3836
3837     case $(tolower $cpu) in
3838         601|ppc601|powerpc601)
3839             cpuflags="-mcpu=601"
3840             disable altivec
3841         ;;
3842         603*|ppc603*|powerpc603*)
3843             cpuflags="-mcpu=603"
3844             disable altivec
3845         ;;
3846         604*|ppc604*|powerpc604*)
3847             cpuflags="-mcpu=604"
3848             disable altivec
3849         ;;
3850         g3|75*|ppc75*|powerpc75*)
3851             cpuflags="-mcpu=750"
3852             disable altivec
3853         ;;
3854         g4|745*|ppc745*|powerpc745*)
3855             cpuflags="-mcpu=7450"
3856         ;;
3857         74*|ppc74*|powerpc74*)
3858             cpuflags="-mcpu=7400"
3859         ;;
3860         g5|970|ppc970|powerpc970)
3861             cpuflags="-mcpu=970"
3862         ;;
3863         power[3-8]*)
3864             cpuflags="-mcpu=$cpu"
3865         ;;
3866         cell)
3867             cpuflags="-mcpu=cell"
3868             enable ldbrx
3869         ;;
3870         e500mc)
3871             cpuflags="-mcpu=e500mc"
3872             disable altivec
3873         ;;
3874         e500v2)
3875             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3876             disable altivec
3877             disable dcbzl
3878         ;;
3879         e500)
3880             cpuflags="-mcpu=8540 -mhard-float"
3881             disable altivec
3882             disable dcbzl
3883         ;;
3884     esac
3885
3886 elif enabled sparc; then
3887
3888     case $cpu in
3889         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3890             cpuflags="-mcpu=$cpu"
3891         ;;
3892         ultrasparc*|niagara[234])
3893             cpuflags="-mcpu=$cpu"
3894         ;;
3895     esac
3896
3897 elif enabled x86; then
3898
3899     case $cpu in
3900         i[345]86|pentium)
3901             cpuflags="-march=$cpu"
3902             disable i686
3903             disable mmx
3904         ;;
3905         # targets that do NOT support nopl and conditional mov (cmov)
3906         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3907             cpuflags="-march=$cpu"
3908             disable i686
3909         ;;
3910         # targets that do support nopl and conditional mov (cmov)
3911         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3912         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3913             cpuflags="-march=$cpu"
3914             enable i686
3915             enable fast_cmov
3916         ;;
3917         # targets that do support conditional mov but on which it's slow
3918         pentium4|pentium4m|prescott|nocona)
3919             cpuflags="-march=$cpu"
3920             enable i686
3921             disable fast_cmov
3922         ;;
3923     esac
3924
3925 fi
3926
3927 if [ "$cpu" != generic ]; then
3928     add_cflags  $cpuflags
3929     add_asflags $cpuflags
3930 fi
3931
3932 # compiler sanity check
3933 check_exec <<EOF
3934 int main(void){ return 0; }
3935 EOF
3936 if test "$?" != 0; then
3937     echo "$cc is unable to create an executable file."
3938     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3939         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3940         echo "Only do this if you know what cross compiling means."
3941     fi
3942     die "C compiler test failed."
3943 fi
3944
3945 add_cppflags -D_ISOC99_SOURCE
3946 add_cxxflags -D__STDC_CONSTANT_MACROS
3947 check_cflags -std=c99
3948 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3949 #include <stdlib.h>
3950 EOF
3951 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3952 #include <stdlib.h>
3953 EOF
3954
3955 add_host_cppflags -D_ISOC99_SOURCE
3956 check_host_cflags -std=c99
3957 check_host_cflags -Wall
3958 check_host_cflags -O3
3959
3960 check_64bit(){
3961     arch32=$1
3962     arch64=$2
3963     expr=$3
3964     check_code cc "" "int test[2*($expr) - 1]" &&
3965         subarch=$arch64 || subarch=$arch32
3966 }
3967
3968 case "$arch" in
3969     aarch64|alpha|ia64)
3970         spic=$shared
3971     ;;
3972     mips)
3973         check_64bit mips mips64 '_MIPS_SIM > 1'
3974         spic=$shared
3975     ;;
3976     parisc)
3977         check_64bit parisc parisc64 'sizeof(void *) > 4'
3978         spic=$shared
3979     ;;
3980     ppc)
3981         check_64bit ppc ppc64 'sizeof(void *) > 4'
3982         spic=$shared
3983     ;;
3984     s390)
3985         check_64bit s390 s390x 'sizeof(void *) > 4'
3986         spic=$shared
3987     ;;
3988     sparc)
3989         check_64bit sparc sparc64 'sizeof(void *) > 4'
3990         spic=$shared
3991     ;;
3992     x86)
3993         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3994         # Treat x32 as x64 for now. Note it also needs spic=$shared
3995         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3996             subarch=x86_64
3997         if test "$subarch" = "x86_64"; then
3998             spic=$shared
3999         fi
4000     ;;
4001     ppc)
4002         check_cc <<EOF && subarch="ppc64"
4003         int test[(int)sizeof(char*) - 7];
4004 EOF
4005     ;;
4006 esac
4007
4008 enable $subarch
4009 enabled spic && enable_weak pic
4010
4011 # OS specific
4012 case $target_os in
4013     aix)
4014         SHFLAGS=-shared
4015         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4016         enabled shared && add_ldflags -Wl,-brtl
4017         ;;
4018     android)
4019         disable symver
4020         enable section_data_rel_ro
4021         SLIB_INSTALL_NAME='$(SLIBNAME)'
4022         SLIB_INSTALL_LINKS=
4023         # soname not set on purpose
4024         SHFLAGS=-shared
4025         ;;
4026     haiku)
4027         prefix_default="/boot/common"
4028         network_extralibs="-lnetwork"
4029         host_libs=
4030         ;;
4031     sunos)
4032         SHFLAGS='-shared -Wl,-h,$$(@F)'
4033         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4034         network_extralibs="-lsocket -lnsl"
4035         # When using suncc to build, the Solaris linker will mark
4036         # an executable with each instruction set encountered by
4037         # the Solaris assembler.  As our libraries contain their own
4038         # guards for processor-specific code, instead suppress
4039         # generation of the HWCAPS ELF section on Solaris x86 only.
4040         enabled_all suncc x86 &&
4041             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4042             add_ldflags -Wl,-M,mapfile
4043         nm_default='nm -P -g'
4044         ;;
4045     netbsd)
4046         disable symver
4047         oss_indev_extralibs="-lossaudio"
4048         oss_outdev_extralibs="-lossaudio"
4049         enabled gcc || check_ldflags -Wl,-zmuldefs
4050         ;;
4051     openbsd|bitrig)
4052         disable symver
4053         SHFLAGS='-shared'
4054         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4055         SLIB_INSTALL_LINKS=
4056         oss_indev_extralibs="-lossaudio"
4057         oss_outdev_extralibs="-lossaudio"
4058         ;;
4059     dragonfly)
4060         disable symver
4061         ;;
4062     freebsd)
4063         ;;
4064     bsd/os)
4065         add_extralibs -lpoll -lgnugetopt
4066         strip="strip -d"
4067         ;;
4068     darwin)
4069         enabled ppc && add_asflags -force_cpusubtype_ALL
4070         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4071         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4072         strip="${strip} -x"
4073         add_ldflags -Wl,-dynamic,-search_paths_first
4074         SLIBSUF=".dylib"
4075         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4076         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4077         objformat="macho"
4078         enabled x86_64 && objformat="macho64"
4079         enabled_any pic shared x86_64 ||
4080             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4081         ;;
4082     mingw32*)
4083         if test $target_os = "mingw32ce"; then
4084             disable network
4085         else
4086             target_os=mingw32
4087         fi
4088         LIBTARGET=i386
4089         if enabled x86_64; then
4090             LIBTARGET="i386:x86-64"
4091         elif enabled arm; then
4092             LIBTARGET=arm-wince
4093         fi
4094         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4095         check_ldflags -Wl,--nxcompat
4096         check_ldflags -Wl,--dynamicbase
4097         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4098         shlibdir_default="$bindir_default"
4099         SLIBPREF=""
4100         SLIBSUF=".dll"
4101         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4102         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4103         dlltool="${cross_prefix}dlltool"
4104         if check_cmd lib.exe -list; then
4105             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4106             if enabled x86_64; then
4107                 LIBTARGET=x64
4108             fi
4109         elif check_cmd $dlltool --version; then
4110             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4111         fi
4112         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4113         SLIB_INSTALL_LINKS=
4114         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4115         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4116         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4117         objformat="win32"
4118         ranlib=:
4119         enable dos_paths
4120         ;;
4121     win32|win64)
4122         disable symver
4123         if enabled shared; then
4124             # Link to the import library instead of the normal static library
4125             # for shared libs.
4126             LD_LIB='%.lib'
4127             # Cannot build both shared and static libs with MSVC or icl.
4128             disable static
4129         fi
4130         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4131         shlibdir_default="$bindir_default"
4132         SLIBPREF=""
4133         SLIBSUF=".dll"
4134         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4135         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4136         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4137         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4138         SLIB_INSTALL_LINKS=
4139         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4140         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4141         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4142         objformat="win32"
4143         ranlib=:
4144         enable dos_paths
4145         ;;
4146     cygwin*)
4147         target_os=cygwin
4148         shlibdir_default="$bindir_default"
4149         SLIBPREF="cyg"
4150         SLIBSUF=".dll"
4151         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4152         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4153         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4154         SLIB_INSTALL_LINKS=
4155         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4156         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4157         objformat="win32"
4158         enable dos_paths
4159         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4160         ;;
4161     *-dos|freedos|opendos)
4162         network_extralibs="-lsocket"
4163         objformat="coff"
4164         enable dos_paths
4165         add_cppflags -U__STRICT_ANSI__
4166         ;;
4167     linux)
4168         enable dv1394
4169         enable section_data_rel_ro
4170         ;;
4171     irix*)
4172         target_os=irix
4173         ranlib="echo ignoring ranlib"
4174         ;;
4175     os/2*)
4176         strip="lxlite -CS"
4177         ln_s="cp -f"
4178         objformat="aout"
4179         add_cppflags -D_GNU_SOURCE
4180         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4181         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4182         LIBSUF="_s.a"
4183         SLIBPREF=""
4184         SLIBSUF=".dll"
4185         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4186         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4187         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4188             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4189             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4190             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4191             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4192             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4193         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4194             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4195         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4196         enable dos_paths
4197         enable_weak os2threads
4198         ;;
4199     gnu/kfreebsd)
4200         add_cppflags -D_BSD_SOURCE
4201         ;;
4202     gnu)
4203         ;;
4204     qnx)
4205         add_cppflags -D_QNX_SOURCE
4206         network_extralibs="-lsocket"
4207         ;;
4208     symbian)
4209         SLIBSUF=".dll"
4210         enable dos_paths
4211         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4212         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4213         add_ldflags -Wl,--target1-abs,--no-undefined \
4214                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4215                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4216         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4217                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4218                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4219         ;;
4220     osf1)
4221         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4222         ;;
4223     minix)
4224         ;;
4225     plan9)
4226         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4227                      -D_REENTRANT_SOURCE        \
4228                      -D_RESEARCH_SOURCE         \
4229                      -DFD_SETSIZE=96            \
4230                      -DHAVE_SOCK_OPTS
4231         add_compat strtod.o strtod=avpriv_strtod
4232         network_extralibs='-lbsd'
4233         exeobjs=compat/plan9/main.o
4234         disable ffserver
4235         cp_f='cp'
4236         ;;
4237     none)
4238         ;;
4239     *)
4240         die "Unknown OS '$target_os'."
4241         ;;
4242 esac
4243
4244 # determine libc flavour
4245
4246 probe_libc(){
4247     pfx=$1
4248     pfx_no_=${pfx%_}
4249     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4250     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4251         eval ${pfx}libc_type=uclibc
4252         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4253     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4254         eval ${pfx}libc_type=glibc
4255         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4256     # MinGW headers can be installed on Cygwin, so check for newlib first.
4257     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4258         eval ${pfx}libc_type=newlib
4259         add_${pfx}cppflags -U__STRICT_ANSI__
4260     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4261     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4262         eval ${pfx}libc_type=mingw64
4263         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4264             add_compat msvcrt/snprintf.o
4265             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4266         fi
4267         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4268         eval test \$${pfx_no_}cc_type = "gcc" &&
4269             add_${pfx}cppflags -D__printf__=__gnu_printf__
4270     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4271          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4272         eval ${pfx}libc_type=mingw32
4273         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4274             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4275             die "ERROR: MinGW32 runtime version must be >= 3.15."
4276         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4277         eval test \$${pfx_no_}cc_type = "gcc" &&
4278             add_${pfx}cppflags -D__printf__=__gnu_printf__
4279     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4280         eval ${pfx}libc_type=msvcrt
4281         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4282         # 0x601 by default unless something else is set by the user.
4283         # This can easily lead to us detecting functions only present
4284         # in such new versions and producing binaries requiring windows 7.0.
4285         # Therefore explicitly set the default to XP unless the user has
4286         # set something else on the command line.
4287         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4288             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4289     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4290         eval ${pfx}libc_type=klibc
4291     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4292         eval ${pfx}libc_type=bionic
4293     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4294         eval ${pfx}libc_type=solaris
4295         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4296     fi
4297     check_${pfx}cc <<EOF
4298 #include <time.h>
4299 void *v = localtime_r;
4300 EOF
4301 test "$?" != 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
4302 #include <time.h>
4303 void *v = localtime_r;
4304 EOF
4305
4306 }
4307
4308 probe_libc
4309 test -n "$libc_type" && enable libc_$libc_type
4310 probe_libc host_
4311 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4312
4313 case $libc_type in
4314     bionic)
4315         add_compat strtod.o strtod=avpriv_strtod
4316         ;;
4317     msvcrt)
4318         add_compat strtod.o strtod=avpriv_strtod
4319         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4320                                      _snprintf=avpriv_snprintf  \
4321                                      vsnprintf=avpriv_vsnprintf
4322         ;;
4323 esac
4324
4325 # hacks for compiler/libc/os combinations
4326
4327 if enabled_all tms470 libc_glibc; then
4328     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4329     add_cppflags -D__USER_LABEL_PREFIX__=
4330     add_cppflags -D__builtin_memset=memset
4331     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4332     add_cflags   -pds=48    # incompatible redefinition of macro
4333 fi
4334
4335 if enabled_all ccc libc_glibc; then
4336     add_ldflags -Wl,-z,now  # calls to libots crash without this
4337 fi
4338
4339 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4340     add_cppflags '-I\$(SRC_PATH)/compat/float'
4341
4342 esc(){
4343     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4344 }
4345
4346 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4347
4348 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4349
4350 set_default libdir
4351 : ${shlibdir_default:="$libdir"}
4352
4353 set_default $PATHS_LIST
4354 set_default nm
4355
4356 # we need to build at least one lib type
4357 if ! enabled_any static shared; then
4358     cat <<EOF
4359 At least one library type must be built.
4360 Specify --enable-static to build the static libraries or --enable-shared to
4361 build the shared libraries as well. To only build the shared libraries specify
4362 --disable-static in addition to --enable-shared.
4363 EOF
4364     exit 1;
4365 fi
4366
4367 die_license_disabled() {
4368     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4369 }
4370
4371 die_license_disabled_gpl() {
4372     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4373 }
4374
4375 die_license_disabled gpl frei0r
4376 die_license_disabled gpl libcdio
4377 die_license_disabled gpl libsmbclient
4378 die_license_disabled gpl libutvideo
4379 die_license_disabled gpl libvidstab
4380 die_license_disabled gpl libx264
4381 die_license_disabled gpl libx265
4382 die_license_disabled gpl libxavs
4383 die_license_disabled gpl libxvid
4384 die_license_disabled gpl libzvbi
4385 die_license_disabled gpl x11grab
4386
4387 die_license_disabled nonfree libaacplus
4388 die_license_disabled nonfree libfaac
4389 die_license_disabled nonfree nvenc
4390 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4391 enabled gpl && die_license_disabled_gpl nonfree openssl
4392
4393 die_license_disabled version3 libopencore_amrnb
4394 die_license_disabled version3 libopencore_amrwb
4395 die_license_disabled version3 libsmbclient
4396 die_license_disabled version3 libvo_aacenc
4397 die_license_disabled version3 libvo_amrwbenc
4398
4399 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4400
4401 disabled optimizations || check_cflags -fomit-frame-pointer
4402
4403 enable_weak_pic() {
4404     disabled pic && return
4405     enable pic
4406     add_cppflags -DPIC
4407     case "$target_os" in
4408     mingw*|cygwin*)
4409         ;;
4410     *)
4411         add_cflags -fPIC
4412         ;;
4413     esac
4414     add_asflags  -fPIC
4415 }
4416
4417 enabled pic && enable_weak_pic
4418
4419 check_cc <<EOF || die "Symbol mangling check failed."
4420 int ff_extern;
4421 EOF
4422 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4423 extern_prefix=${sym%%ff_extern*}
4424
4425 check_cc <<EOF && enable_weak inline_asm
4426 void foo(void) { __asm__ volatile ("" ::); }
4427 EOF
4428
4429 _restrict=
4430 for restrict_keyword in restrict __restrict__ __restrict; do
4431     check_cc <<EOF && _restrict=$restrict_keyword && break
4432 void foo(char * $restrict_keyword p);
4433 EOF
4434 done
4435
4436 check_cc <<EOF && enable pragma_deprecated
4437 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4438 EOF
4439
4440 check_cc <<EOF && enable attribute_packed
4441 struct { int x; } __attribute__((packed)) x;
4442 EOF
4443
4444 check_cc <<EOF && enable attribute_may_alias
4445 union { int x; } __attribute__((may_alias)) x;
4446 EOF
4447
4448 check_cc <<EOF || die "endian test failed"
4449 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4450 EOF
4451 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4452
4453 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4454     if ! enabled bigendian && enabled altivec ;then
4455         enable vsx
4456     fi
4457 fi
4458
4459 check_gas() {
4460     log "check_gas using '$as' as AS"
4461     # :vararg is used on aarch64, arm and ppc altivec
4462     check_as <<EOF || return 1
4463 .macro m n, y:vararg=0
4464 \n: .int \y
4465 .endm
4466 m x
4467 EOF
4468     # .altmacro is only used in arm asm
4469     ! enabled arm || check_as <<EOF || return 1
4470 .altmacro
4471 EOF
4472     enable gnu_as
4473     return 0
4474 }
4475
4476 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4477     nogas=:
4478     enabled_any arm aarch64 && nogas=die
4479     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4480     as_noop=-v
4481
4482     case $as_type in
4483         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4484         gcc)  gaspp_as_type=gas ;;
4485         *)    gaspp_as_type=$as_type ;;
4486     esac
4487
4488     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4489
4490     test "${as#*gas-preprocessor.pl}" != "$as" ||
4491     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4492         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4493
4494     if ! check_gas ; then
4495         as=${gas:=$as}
4496         check_gas || \
4497             $nogas "GNU assembler not found, install/update gas-preprocessor"
4498     fi
4499
4500     check_as <<EOF && enable as_func
4501 .func test
4502 .endfunc
4503 EOF
4504 fi
4505
4506 check_inline_asm inline_asm_labels '"1:\n"'
4507
4508 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4509
4510 if enabled aarch64; then
4511     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4512     # internal assembler in clang 3.3 does not support this instruction
4513     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4514     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4515
4516     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4517
4518 elif enabled alpha; then
4519
4520     check_cflags -mieee
4521
4522 elif enabled arm; then
4523
4524     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4525 float func(float a, float b){ return a+b; }
4526 EOF
4527
4528     enabled thumb && check_cflags -mthumb || check_cflags -marm
4529
4530     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4531         enable vfp_args
4532     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4533         case "${cross_prefix:-$cc}" in
4534             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4535             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4536 __asm__ (".eabi_attribute 28, 1");
4537 int main(void) { return 0; }
4538 EOF
4539         esac
4540         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4541     fi
4542
4543     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4544     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4545     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4546     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4547     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4548     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4549     enabled setend  && check_insn setend  'setend be'
4550
4551     [ $target_os = linux ] || [ $target_os = android ] ||
4552         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4553             $ARCH_EXT_LIST_ARM
4554
4555     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4556
4557     check_as <<EOF && enable as_dn_directive
4558 ra .dn d0.i16
4559 .unreq ra
4560 EOF
4561
4562     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4563
4564 elif enabled mips; then
4565
4566     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4567     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4568      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4569     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4570      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4571     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4572      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4573     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4574      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4575
4576 elif enabled parisc; then
4577
4578     if enabled gcc; then
4579         case $($cc -dumpversion) in
4580             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4581         esac
4582     fi
4583
4584 elif enabled ppc; then
4585
4586     enable local_aligned_8 local_aligned_16 local_aligned_32
4587
4588     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4589     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4590     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4591     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4592
4593     # AltiVec flags: The FSF version of GCC differs from the Apple version
4594     if enabled altivec; then
4595         check_cflags -maltivec -mabi=altivec &&
4596         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4597         check_cflags -faltivec
4598
4599         # check if our compiler supports Motorola AltiVec C API
4600         check_cc <<EOF || disable altivec
4601 $inc_altivec_h
4602 int main(void) {
4603     vector signed int v1 = (vector signed int) { 0 };
4604     vector signed int v2 = (vector signed int) { 1 };
4605     v1 = vec_add(v1, v2);
4606     return 0;
4607 }
4608 EOF
4609
4610         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4611     fi
4612
4613     if enabled vsx; then
4614         check_cflags -mvsx
4615     fi
4616 elif enabled x86; then
4617
4618     check_builtin rdtsc    intrin.h   "__rdtsc()"
4619     check_builtin mm_empty mmintrin.h "_mm_empty()"
4620
4621     enable local_aligned_8 local_aligned_16 local_aligned_32
4622
4623     # check whether EBP is available on x86
4624     # As 'i' is stored on the stack, this program will crash
4625     # if the base pointer is used to access it because the
4626     # base pointer is cleared in the inline assembly code.
4627     check_exec_crash <<EOF && enable ebp_available
4628 volatile int i=0;
4629 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4630 return i;
4631 EOF
4632
4633     # check whether EBX is available on x86
4634     check_inline_asm ebx_available '""::"b"(0)' &&
4635         check_inline_asm ebx_available '"":::"%ebx"'
4636
4637     # check whether xmm clobbers are supported
4638     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4639
4640     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4641         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4642
4643     # check whether binutils is new enough to compile SSSE3/MMXEXT
4644     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4645     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4646
4647     if ! disabled_any asm mmx yasm; then
4648         if check_cmd $yasmexe --version; then
4649             enabled x86_64 && yasm_extra="-m amd64"
4650             yasm_debug="-g dwarf2"
4651         elif check_cmd nasm -v; then
4652             yasmexe=nasm
4653             yasm_debug="-g -F dwarf"
4654             if enabled x86_64; then
4655                 case "$objformat" in
4656                     elf)   objformat=elf64 ;;
4657                     win32) objformat=win64 ;;
4658                 esac
4659             fi
4660         fi
4661
4662         YASMFLAGS="-f $objformat $yasm_extra"
4663         enabled pic               && append YASMFLAGS "-DPIC"
4664         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4665         case "$objformat" in
4666             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4667         esac
4668
4669         check_yasm "movbe ecx, [5]" && enable yasm ||
4670             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4671         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4672         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4673         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4674         check_yasm "CPU amdnop" || disable cpunop
4675     fi
4676
4677     case "$cpu" in
4678         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4679             disable fast_clz
4680         ;;
4681     esac
4682
4683 fi
4684
4685 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4686
4687 check_ldflags -Wl,--as-needed
4688 check_ldflags -Wl,-z,noexecstack
4689
4690 if check_func dlopen; then
4691     ldl=
4692 elif check_func dlopen -ldl; then
4693     ldl=-ldl
4694 fi
4695
4696 frei0r_filter_extralibs='$ldl'
4697 frei0r_src_filter_extralibs='$ldl'
4698 ladspa_filter_extralibs='$ldl'
4699 nvenc_encoder_extralibs='$ldl'
4700
4701 if ! disabled network; then
4702     check_func getaddrinfo $network_extralibs
4703     check_func getservbyport $network_extralibs
4704     check_func inet_aton $network_extralibs
4705
4706     check_type netdb.h "struct addrinfo"
4707     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4708     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4709     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4710     check_type poll.h "struct pollfd"
4711     check_type netinet/sctp.h "struct sctp_event_subscribe"
4712     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4713     check_type netinet/in.h "struct sockaddr_in6"
4714     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4715     check_type "sys/types.h sys/socket.h" socklen_t
4716
4717     # Prefer arpa/inet.h over winsock2
4718     if check_header arpa/inet.h ; then
4719         check_func closesocket
4720     elif check_header winsock2.h ; then
4721         check_func_headers winsock2.h closesocket -lws2 &&
4722             network_extralibs="-lws2" ||
4723         { check_func_headers winsock2.h closesocket -lws2_32 &&
4724             network_extralibs="-lws2_32"; } || disable winsock2_h network
4725         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4726
4727         check_type ws2tcpip.h socklen_t
4728         check_type ws2tcpip.h "struct addrinfo"
4729         check_type ws2tcpip.h "struct group_source_req"
4730         check_type ws2tcpip.h "struct ip_mreq_source"
4731         check_type ws2tcpip.h "struct ipv6_mreq"
4732         check_type winsock2.h "struct pollfd"
4733         check_struct winsock2.h "struct sockaddr" sa_len
4734         check_type ws2tcpip.h "struct sockaddr_in6"
4735         check_type ws2tcpip.h "struct sockaddr_storage"
4736     else
4737         disable network
4738     fi
4739 fi
4740
4741 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4742 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4743 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4744 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4745 check_builtin sarestart signal.h "SA_RESTART"
4746 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4747
4748 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4749 check_func  ${malloc_prefix}memalign            && enable memalign
4750 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4751
4752 check_func  access
4753 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4754 check_func  fcntl
4755 check_func  fork
4756 check_func  gethrtime
4757 check_func  getopt
4758 check_func  getrusage
4759 check_func  gettimeofday
4760 check_func  gmtime_r
4761 check_func  isatty
4762 check_func  localtime_r
4763 check_func  mach_absolute_time
4764 check_func  mkstemp
4765 check_func  mmap
4766 check_func  mprotect
4767 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4768 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4769 check_func  sched_getaffinity
4770 check_func  setrlimit
4771 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4772 check_func  strerror_r
4773 check_func  sysconf
4774 check_func  sysctl
4775 check_func  usleep
4776
4777 check_func_headers conio.h kbhit
4778 check_func_headers io.h setmode
4779 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4780 check_func_headers stdlib.h getenv
4781
4782 check_func_headers windows.h CoTaskMemFree -lole32
4783 check_func_headers windows.h GetProcessAffinityMask
4784 check_func_headers windows.h GetProcessTimes
4785 check_func_headers windows.h GetSystemTimeAsFileTime
4786 check_func_headers windows.h MapViewOfFile
4787 check_func_headers windows.h PeekNamedPipe
4788 check_func_headers windows.h SetConsoleTextAttribute
4789 check_func_headers windows.h Sleep
4790 check_func_headers windows.h VirtualAlloc
4791 check_struct windows.h "CONDITION_VARIABLE" Ptr
4792 check_func_headers glob.h glob
4793 enabled xlib &&
4794     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4795
4796 check_header direct.h
4797 check_header dlfcn.h
4798 check_header dxva.h
4799 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4800 check_header io.h
4801 check_header libcrystalhd/libcrystalhd_if.h
4802 check_header mach/mach_time.h
4803 check_header malloc.h
4804 check_header net/udplite.h
4805 check_header poll.h
4806 check_header sys/mman.h
4807 check_header sys/param.h
4808 check_header sys/resource.h
4809 check_header sys/select.h
4810 check_header sys/time.h
4811 check_header sys/un.h
4812 check_header termios.h
4813 check_header unistd.h
4814 check_header vdpau/vdpau.h
4815 check_header vdpau/vdpau_x11.h
4816 check_header VideoDecodeAcceleration/VDADecoder.h
4817 check_header windows.h
4818 check_header X11/extensions/XvMClib.h
4819 check_header asm/types.h
4820
4821 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4822 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4823 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4824
4825 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4826
4827 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4828
4829 if ! disabled w32threads && ! enabled pthreads; then
4830     check_func_headers "windows.h process.h" _beginthreadex &&
4831         enable w32threads || disable w32threads
4832 fi
4833
4834 # check for some common methods of building with pthread support
4835 # do this before the optional library checks as some of them require pthreads
4836 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4837     enable pthreads
4838     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4839         add_cflags -pthread
4840         add_extralibs -pthread
4841     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4842         add_cflags -pthreads
4843         add_extralibs -pthreads
4844     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4845         add_cflags -ldl -pthread
4846         add_extralibs -ldl -pthread
4847     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4848         add_extralibs -lpthreadGC2
4849     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4850         :
4851     elif ! check_func pthread_join && ! check_func pthread_create; then
4852         disable pthreads
4853     fi
4854     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4855 fi
4856
4857
4858 if enabled pthreads; then
4859   check_func pthread_cancel
4860 fi
4861
4862 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4863 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4864 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4865
4866 check_lib math.h sin -lm && LIBM="-lm"
4867 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4868
4869 atan2f_args=2
4870 ldexpf_args=2
4871 powf_args=2
4872
4873 for func in $MATH_FUNCS; do
4874     eval check_mathfunc $func \${${func}_args:-1}
4875 done
4876
4877 # these are off by default, so fail if requested and not available
4878 enabled avfoundation_indev &&&nbs