git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 198   --enable-frei0r          enable frei0r video filtering [no]
 199   --enable-gnutls          enable gnutls, needed for https support
 200                            if openssl is not used [no]
 201   --disable-iconv          disable iconv [autodetect]
 202   --enable-ladspa          enable LADSPA audio filtering [no]
 203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 204   --enable-libass          enable libass subtitles rendering,
 205                            needed for subtitles and ass filter [no]
 206   --enable-libbluray       enable BluRay reading using libbluray [no]
 207   --enable-libbs2b         enable bs2b DSP library [no]
 208   --enable-libcaca         enable textual display using libcaca [no]
 209   --enable-libcelt         enable CELT decoding via libcelt [no]
 210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 212                            and libraw1394 [no]
 213   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 214   --enable-libfaac         enable AAC encoding via libfaac [no]
 215   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 216   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 217   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 218   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 219   --enable-libgme          enable Game Music Emu via libgme [no]
 220   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 221   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 222   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 223   --enable-libmfx          enable HW acceleration through libmfx
 224   --enable-libmodplug      enable ModPlug via libmodplug [no]
 225   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 226   --enable-libnut          enable NUT (de)muxing via libnut,
 227                            native (de)muxer exists [no]
 228   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 229   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 230   --enable-libopencv       enable video filtering via libopencv [no]
 231   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 232   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 233   --enable-libopus         enable Opus de/encoding via libopus [no]
 234   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 235   --enable-libquvi         enable quvi input via libquvi [no]
 236   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 237   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 238   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 239   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 240   --enable-libsoxr         enable Include libsoxr resampling [no]
 241   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 242   --enable-libssh          enable SFTP protocol via libssh [no]
 243   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 244   --enable-libtheora       enable Theora encoding via libtheora [no]
 245   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 246   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 247   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 248   --enable-libvidstab      enable video stabilization using vid.stab [no]
 249   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 250   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 251   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 252                            native implementation exists [no]
 253   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 254   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 255   --enable-libwebp         enable WebP encoding via libwebp [no]
 256   --enable-libx264         enable H.264 encoding via x264 [no]
 257   --enable-libx265         enable HEVC encoding via x265 [no]
 258   --enable-libxavs         enable AVS encoding via xavs [no]
 259   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 260   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 261   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 262   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 263   --enable-libxvid         enable Xvid encoding via xvidcore,
 264                            native MPEG-4/Xvid encoder exists [no]
 265   --enable-libzmq          enable message passing via libzmq [no]
 266   --enable-libzvbi         enable teletext support via libzvbi [no]
 267   --disable-lzma           disable lzma [autodetect]
 268   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 269   --enable-mmal            enable decoding via MMAL [no]
 270   --enable-nvenc           enable NVIDIA NVENC support [no]
 271   --enable-openal          enable OpenAL 1.1 capture support [no]
 272   --enable-opencl          enable OpenCL code
 273   --enable-opengl          enable OpenGL rendering [no]
 274   --enable-openssl         enable openssl, needed for https support
 275                            if gnutls is not used [no]
 276   --disable-sdl            disable sdl [autodetect]
 277   --enable-x11grab         enable X11 grabbing (legacy) [no]
 278   --disable-xlib           disable xlib [autodetect]
 279   --disable-zlib           disable zlib [autodetect]
 280
 281 Toolchain options:
 282   --arch=ARCH              select architecture [$arch]
 283   --cpu=CPU                select the minimum required CPU (affects
 284                            instruction selection, may crash on older CPUs)
 285   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 286   --progs-suffix=SUFFIX    program name suffix []
 287   --enable-cross-compile   assume a cross-compiler is used
 288   --sysroot=PATH           root of cross-build tree
 289   --sysinclude=PATH        location of cross-build system headers
 290   --target-os=OS           compiler targets OS [$target_os]
 291   --target-exec=CMD        command to run executables on target
 292   --target-path=DIR        path to view of build directory on target
 293   --target-samples=DIR     path to samples directory on target
 294   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 295   --toolchain=NAME         set tool defaults according to NAME
 296   --nm=NM                  use nm tool NM [$nm_default]
 297   --ar=AR                  use archive tool AR [$ar_default]
 298   --as=AS                  use assembler AS [$as_default]
 299   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 300   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 301   --cc=CC                  use C compiler CC [$cc_default]
 302   --cxx=CXX                use C compiler CXX [$cxx_default]
 303   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 304   --ld=LD                  use linker LD [$ld_default]
 305   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 306   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 307   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 308   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 309   --host-cc=HOSTCC         use host C compiler HOSTCC
 310   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 311   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 312   --host-ld=HOSTLD         use host linker HOSTLD
 313   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 314   --host-libs=HLIBS        use libs HLIBS when linking for host
 315   --host-os=OS             compiler host OS [$target_os]
 316   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 317   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 318   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 319   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 320   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 321   --extra-version=STRING   version string suffix []
 322   --optflags=OPTFLAGS      override optimization-related compiler flags
 323   --build-suffix=SUFFIX    library name suffix []
 324   --enable-pic             build position-independent code
 325   --enable-thumb           compile for Thumb instruction set
 326   --enable-lto             use link-time optimization
 327
 328 Advanced options (experts only):
 329   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 330   --disable-symver         disable symbol versioning
 331   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 332   --disable-safe-bitstream-reader
 333                            disable buffer boundary checking in bitreaders
 334                            (faster, but may crash)
 335   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 336   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 337
 338 Optimization options (experts only):
 339   --disable-asm            disable all assembly optimizations
 340   --disable-altivec        disable AltiVec optimizations
 341   --disable-amd3dnow       disable 3DNow! optimizations
 342   --disable-amd3dnowext    disable 3DNow! extended optimizations
 343   --disable-mmx            disable MMX optimizations
 344   --disable-mmxext         disable MMXEXT optimizations
 345   --disable-sse            disable SSE optimizations
 346   --disable-sse2           disable SSE2 optimizations
 347   --disable-sse3           disable SSE3 optimizations
 348   --disable-ssse3          disable SSSE3 optimizations
 349   --disable-sse4           disable SSE4 optimizations
 350   --disable-sse42          disable SSE4.2 optimizations
 351   --disable-avx            disable AVX optimizations
 352   --disable-xop            disable XOP optimizations
 353   --disable-fma3           disable FMA3 optimizations
 354   --disable-fma4           disable FMA4 optimizations
 355   --disable-avx2           disable AVX2 optimizations
 356   --disable-armv5te        disable armv5te optimizations
 357   --disable-armv6          disable armv6 optimizations
 358   --disable-armv6t2        disable armv6t2 optimizations
 359   --disable-vfp            disable VFP optimizations
 360   --disable-neon           disable NEON optimizations
 361   --disable-inline-asm     disable use of inline assembly
 362   --disable-yasm           disable use of nasm/yasm assembly
 363   --disable-mips32r5       disable MIPS32R5 optimizations
 364   --disable-mips64r6       disable MIPS64R6 optimizations
 365   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 366   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 367   --disable-msa            disable MSA optimizations
 368   --disable-mipsfpu        disable floating point MIPS optimizations
 369   --disable-loongson3      disable Loongson-3 SIMD optimizations
 370   --disable-fast-unaligned consider unaligned accesses slow
 371
 372 Developer options (useful when working on FFmpeg itself):
 373   --disable-debug          disable debugging symbols
 374   --enable-debug=LEVEL     set the debug level [$debuglevel]
 375   --disable-optimizations  disable compiler optimizations
 376   --enable-extra-warnings  enable more compiler warnings
 377   --disable-stripping      disable stripping of executables and shared libraries
 378   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 379                            2 causes a slowdown at runtime.
 380   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 381   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 382                            leaks and errors, using the specified valgrind binary.
 383                            Cannot be combined with --target-exec
 384   --enable-ftrapv          Trap arithmetic overflows
 385   --samples=PATH           location of test samples for FATE, if not set use
 386                            \$FATE_SAMPLES at make invocation time.
 387   --enable-neon-clobber-test check NEON registers for clobbering (should be
 388                            used only for debugging purposes)
 389   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 390                            should be used only for debugging purposes)
 391   --enable-random          randomly enable/disable components
 392   --disable-random
 393   --enable-random=LIST     randomly enable/disable specific components or
 394   --disable-random=LIST    component groups. LIST is a comma-separated list
 395                            of NAME[:PROB] entries where NAME is a component
 396                            (group) and PROB the probability associated with
 397                            NAME (default 0.5).
 398   --random-seed=VALUE      seed value for --enable/disable-random
 399   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 400                            (only applies to --disable-optimizations builds)
 401
 402 NOTE: Object files are built at the place where configure is launched.
 403 EOF
 404   exit 0
 405 }
 406
 407 quotes='""'
 408
 409 log(){
 410     echo "$@" >> $logfile
 411 }
 412
 413 log_file(){
 414     log BEGIN $1
 415     pr -n -t $1 >> $logfile
 416     log END $1
 417 }
 418
 419 echolog(){
 420     log "$@"
 421     echo "$@"
 422 }
 423
 424 warn(){
 425     log "WARNING: $*"
 426     WARNINGS="${WARNINGS}WARNING: $*\n"
 427 }
 428
 429 die(){
 430     echolog "$@"
 431     cat <<EOF
 432
 433 If you think configure made a mistake, make sure you are using the latest
 434 version from Git.  If the latest version fails, report the problem to the
 435 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 436 EOF
 437     if disabled logging; then
 438         cat <<EOF
 439 Rerun configure with logging enabled (do not use --disable-logging), and
 440 include the log this produces with your report.
 441 EOF
 442     else
 443         cat <<EOF
 444 Include the log file "$logfile" produced by configure as this will help
 445 solve the problem.
 446 EOF
 447     fi
 448     exit 1
 449 }
 450
 451 # Avoid locale weirdness, besides we really just want to translate ASCII.
 452 toupper(){
 453     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 454 }
 455
 456 tolower(){
 457     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 458 }
 459
 460 c_escape(){
 461     echo "$*" | sed 's/["\\]/\\\0/g'
 462 }
 463
 464 sh_quote(){
 465     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 466     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 467     echo "$v"
 468 }
 469
 470 cleanws(){
 471     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 472 }
 473
 474 filter(){
 475     pat=$1
 476     shift
 477     for v; do
 478         eval "case $v in $pat) echo $v ;; esac"
 479     done
 480 }
 481
 482 filter_out(){
 483     pat=$1
 484     shift
 485     for v; do
 486         eval "case $v in $pat) ;; *) echo $v ;; esac"
 487     done
 488 }
 489
 490 map(){
 491     m=$1
 492     shift
 493     for v; do eval $m; done
 494 }
 495
 496 add_suffix(){
 497     suffix=$1
 498     shift
 499     for v; do echo ${v}${suffix}; done
 500 }
 501
 502 set_all(){
 503     value=$1
 504     shift
 505     for var in $*; do
 506         eval $var=$value
 507     done
 508 }
 509
 510 set_weak(){
 511     value=$1
 512     shift
 513     for var; do
 514         eval : \${$var:=$value}
 515     done
 516 }
 517
 518 sanitize_var_name(){
 519     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 520 }
 521
 522 set_safe(){
 523     var=$1
 524     shift
 525     eval $(sanitize_var_name "$var")='$*'
 526 }
 527
 528 get_safe(){
 529     eval echo \$$(sanitize_var_name "$1")
 530 }
 531
 532 pushvar(){
 533     for pvar in $*; do
 534         eval level=\${${pvar}_level:=0}
 535         eval ${pvar}_${level}="\$$pvar"
 536         eval ${pvar}_level=$(($level+1))
 537     done
 538 }
 539
 540 popvar(){
 541     for pvar in $*; do
 542         eval level=\${${pvar}_level:-0}
 543         test $level = 0 && continue
 544         eval level=$(($level-1))
 545         eval $pvar="\${${pvar}_${level}}"
 546         eval ${pvar}_level=$level
 547         eval unset ${pvar}_${level}
 548     done
 549 }
 550
 551 enable(){
 552     set_all yes $*
 553 }
 554
 555 disable(){
 556     set_all no $*
 557 }
 558
 559 enable_weak(){
 560     set_weak yes $*
 561 }
 562
 563 disable_weak(){
 564     set_weak no $*
 565 }
 566
 567 enable_safe(){
 568     for var; do
 569         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 570     done
 571 }
 572
 573 disable_safe(){
 574     for var; do
 575         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 576     done
 577 }
 578
 579 do_enable_deep(){
 580     for var; do
 581         enabled $var && continue
 582         eval sel="\$${var}_select"
 583         eval sgs="\$${var}_suggest"
 584         pushvar var sgs
 585         enable_deep $sel
 586         popvar sgs
 587         enable_deep_weak $sgs
 588         popvar var
 589     done
 590 }
 591
 592 enable_deep(){
 593     do_enable_deep $*
 594     enable $*
 595 }
 596
 597 enable_deep_weak(){
 598     for var; do
 599         disabled $var && continue
 600         pushvar var
 601         do_enable_deep $var
 602         popvar var
 603         enable_weak $var
 604     done
 605 }
 606
 607 enabled(){
 608     test "${1#!}" = "$1" && op== || op=!=
 609     eval test "x\$${1#!}" $op "xyes"
 610 }
 611
 612 disabled(){
 613     test "${1#!}" = "$1" && op== || op=!=
 614     eval test "x\$${1#!}" $op "xno"
 615 }
 616
 617 enabled_all(){
 618     for opt; do
 619         enabled $opt || return 1
 620     done
 621 }
 622
 623 disabled_all(){
 624     for opt; do
 625         disabled $opt || return 1
 626     done
 627 }
 628
 629 enabled_any(){
 630     for opt; do
 631         enabled $opt && return 0
 632     done
 633 }
 634
 635 disabled_any(){
 636     for opt; do
 637         disabled $opt && return 0
 638     done
 639     return 1
 640 }
 641
 642 set_default(){
 643     for opt; do
 644         eval : \${$opt:=\$${opt}_default}
 645     done
 646 }
 647
 648 is_in(){
 649     value=$1
 650     shift
 651     for var in $*; do
 652         [ $var = $value ] && return 0
 653     done
 654     return 1
 655 }
 656
 657 do_check_deps(){
 658     for cfg; do
 659         cfg="${cfg#!}"
 660         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 661         disabled ${cfg}_checking && continue
 662         enable ${cfg}_checking
 663         append allopts $cfg
 664
 665         eval dep_all="\$${cfg}_deps"
 666         eval dep_any="\$${cfg}_deps_any"
 667         eval dep_sel="\$${cfg}_select"
 668         eval dep_sgs="\$${cfg}_suggest"
 669         eval dep_ifa="\$${cfg}_if"
 670         eval dep_ifn="\$${cfg}_if_any"
 671
 672         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 673         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 674         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 675
 676         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 677         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 678         enabled_all  $dep_all || disable $cfg
 679         enabled_any  $dep_any || disable $cfg
 680         disabled_any $dep_sel && disable $cfg
 681
 682         if enabled $cfg; then
 683             enable_deep $dep_sel
 684             enable_deep_weak $dep_sgs
 685         fi
 686
 687         disable ${cfg}_checking
 688     done
 689 }
 690
 691 check_deps(){
 692     unset allopts
 693
 694     do_check_deps "$@"
 695
 696     for cfg in $allopts; do
 697         enabled $cfg || continue
 698         eval dep_extralibs="\$${cfg}_extralibs"
 699         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 700     done
 701 }
 702
 703 print_config(){
 704     pfx=$1
 705     files=$2
 706     shift 2
 707     map 'eval echo "$v \${$v:-no}"' "$@" |
 708     awk "BEGIN { split(\"$files\", files) }
 709         {
 710             c = \"$pfx\" toupper(\$1);
 711             v = \$2;
 712             sub(/yes/, 1, v);
 713             sub(/no/,  0, v);
 714             for (f in files) {
 715                 file = files[f];
 716                 if (file ~ /\\.h\$/) {
 717                     printf(\"#define %s %d\\n\", c, v) >>file;
 718                 } else if (file ~ /\\.asm\$/) {
 719                     printf(\"%%define %s %d\\n\", c, v) >>file;
 720                 } else if (file ~ /\\.mak\$/) {
 721                     n = -v ? \"\" : \"!\";
 722                     printf(\"%s%s=yes\\n\", n, c) >>file;
 723                 } else if (file ~ /\\.texi\$/) {
 724                     pre = -v ? \"\" : \"@c \";
 725                     yesno = \$2;
 726                     c2 = tolower(c);
 727                     gsub(/_/, \"-\", c2);
 728                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 729                 }
 730             }
 731         }"
 732 }
 733
 734 print_enabled(){
 735     suf=$1
 736     shift
 737     for v; do
 738         enabled $v && printf "%s\n" ${v%$suf};
 739     done
 740 }
 741
 742 append(){
 743     var=$1
 744     shift
 745     eval "$var=\"\$$var $*\""
 746 }
 747
 748 prepend(){
 749     var=$1
 750     shift
 751     eval "$var=\"$* \$$var\""
 752 }
 753
 754 unique(){
 755     var=$1
 756     uniq_list=""
 757     for tok in $(eval echo \$$var); do
 758         uniq_list="$(filter_out $tok $uniq_list) $tok"
 759     done
 760     eval "$var=\"${uniq_list}\""
 761 }
 762
 763 add_cppflags(){
 764     append CPPFLAGS "$@"
 765 }
 766
 767 add_cflags(){
 768     append CFLAGS $($cflags_filter "$@")
 769 }
 770
 771 add_cxxflags(){
 772     append CXXFLAGS $($cflags_filter "$@")
 773 }
 774
 775 add_asflags(){
 776     append ASFLAGS $($asflags_filter "$@")
 777 }
 778
 779 add_ldflags(){
 780     append LDFLAGS $($ldflags_filter "$@")
 781 }
 782
 783 add_ldexeflags(){
 784     append LDEXEFLAGS $($ldflags_filter "$@")
 785 }
 786
 787 add_stripflags(){
 788     append ASMSTRIPFLAGS "$@"
 789 }
 790
 791 add_extralibs(){
 792     prepend extralibs $($ldflags_filter "$@")
 793 }
 794
 795 add_host_cppflags(){
 796     append host_cppflags "$@"
 797 }
 798
 799 add_host_cflags(){
 800     append host_cflags $($host_cflags_filter "$@")
 801 }
 802
 803 add_host_ldflags(){
 804     append host_ldflags $($host_ldflags_filter "$@")
 805 }
 806
 807 add_compat(){
 808     append compat_objs $1
 809     shift
 810     map 'add_cppflags -D$v' "$@"
 811 }
 812
 813 check_cmd(){
 814     log "$@"
 815     "$@" >> $logfile 2>&1
 816 }
 817
 818 check_stat(){
 819     log check_stat "$@"
 820     stat "$1" >> $logfile 2>&1
 821 }
 822
 823 cc_o(){
 824     eval printf '%s\\n' $CC_O
 825 }
 826
 827 cc_e(){
 828     eval printf '%s\\n' $CC_E
 829 }
 830
 831 check_cc(){
 832     log check_cc "$@"
 833     cat > $TMPC
 834     log_file $TMPC
 835     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 836 }
 837
 838 check_cxx(){
 839     log check_cxx "$@"
 840     cat > $TMPCPP
 841     log_file $TMPCPP
 842     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 843 }
 844
 845 check_oc(){
 846     log check_oc "$@"
 847     cat > $TMPM
 848     log_file $TMPM
 849     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 850 }
 851
 852 check_cpp(){
 853     log check_cpp "$@"
 854     cat > $TMPC
 855     log_file $TMPC
 856     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 857 }
 858
 859 as_o(){
 860     eval printf '%s\\n' $AS_O
 861 }
 862
 863 check_as(){
 864     log check_as "$@"
 865     cat > $TMPS
 866     log_file $TMPS
 867     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 868 }
 869
 870 check_inline_asm(){
 871     log check_inline_asm "$@"
 872     name="$1"
 873     code="$2"
 874     shift 2
 875     disable $name
 876     check_cc "$@" <<EOF && enable $name
 877 void foo(void){ __asm__ volatile($code); }
 878 EOF
 879 }
 880
 881 check_insn(){
 882     log check_insn "$@"
 883     check_inline_asm ${1}_inline "\"$2\""
 884     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 885 }
 886
 887 check_yasm(){
 888     log check_yasm "$@"
 889     echo "$1" > $TMPS
 890     log_file $TMPS
 891     shift 1
 892     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 893 }
 894
 895 ld_o(){
 896     eval printf '%s\\n' $LD_O
 897 }
 898
 899 check_ld(){
 900     log check_ld "$@"
 901     type=$1
 902     shift 1
 903     flags=$(filter_out '-l*|*.so' $@)
 904     libs=$(filter '-l*|*.so' $@)
 905     check_$type $($cflags_filter $flags) || return
 906     flags=$($ldflags_filter $flags)
 907     libs=$($ldflags_filter $libs)
 908     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 909 }
 910
 911 print_include(){
 912     hdr=$1
 913     test "${hdr%.h}" = "${hdr}" &&
 914         echo "#include $hdr"    ||
 915         echo "#include <$hdr>"
 916 }
 917
 918 check_code(){
 919     log check_code "$@"
 920     check=$1
 921     headers=$2
 922     code=$3
 923     shift 3
 924     {
 925         for hdr in $headers; do
 926             print_include $hdr
 927         done
 928         echo "int main(void) { $code; return 0; }"
 929     } | check_$check "$@"
 930 }
 931
 932 check_cppflags(){
 933     log check_cppflags "$@"
 934     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 935 int x;
 936 EOF
 937 }
 938
 939 test_cflags(){
 940     log test_cflags "$@"
 941     set -- $($cflags_filter "$@")
 942     check_cc "$@" <<EOF
 943 int x;
 944 EOF
 945 }
 946
 947 check_cflags(){
 948     log check_cflags "$@"
 949     test_cflags "$@" && add_cflags "$@"
 950 }
 951
 952 check_cxxflags(){
 953     log check_cxxflags "$@"
 954     set -- $($cflags_filter "$@")
 955     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 956 int x;
 957 EOF
 958 }
 959
 960 test_ldflags(){
 961     log test_ldflags "$@"
 962     check_ld "cc" "$@" <<EOF
 963 int main(void){ return 0; }
 964 EOF
 965 }
 966
 967 check_ldflags(){
 968     log check_ldflags "$@"
 969     test_ldflags "$@" && add_ldflags "$@"
 970 }
 971
 972 test_stripflags(){
 973     log test_stripflags "$@"
 974     # call check_cc to get a fresh TMPO
 975     check_cc <<EOF
 976 int main(void) { return 0; }
 977 EOF
 978     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 979 }
 980
 981 check_stripflags(){
 982     log check_stripflags "$@"
 983     test_stripflags "$@" && add_stripflags "$@"
 984 }
 985
 986 check_header(){
 987     log check_header "$@"
 988     header=$1
 989     shift
 990     disable_safe $header
 991     check_cpp "$@" <<EOF && enable_safe $header
 992 #include <$header>
 993 int x;
 994 EOF
 995 }
 996
 997 check_header_oc(){
 998     log check_header_oc "$@"
 999     rm -f -- "$TMPO"
1000     header=$1
1001     shift
1002     disable_safe $header
1003     {
1004        echo "#include <$header>"
1005        echo "int main(void) { return 0; }"
1006     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1007 }
1008
1009 check_func(){
1010     log check_func "$@"
1011     func=$1
1012     shift
1013     disable $func
1014     check_ld "cc" "$@" <<EOF && enable $func
1015 extern int $func();
1016 int main(void){ $func(); }
1017 EOF
1018 }
1019
1020 check_mathfunc(){
1021     log check_mathfunc "$@"
1022     func=$1
1023     narg=$2
1024     shift 2
1025     test $narg = 2 && args="f, g" || args="f"
1026     disable $func
1027     check_ld "cc" "$@" <<EOF && enable $func
1028 #include <math.h>
1029 float foo(float f, float g) { return $func($args); }
1030 int main(void){ return (int) foo; }
1031 EOF
1032 }
1033
1034 check_func_headers(){
1035     log check_func_headers "$@"
1036     headers=$1
1037     funcs=$2
1038     shift 2
1039     {
1040         for hdr in $headers; do
1041             print_include $hdr
1042         done
1043         for func in $funcs; do
1044             echo "long check_$func(void) { return (long) $func; }"
1045         done
1046         echo "int main(void) { return 0; }"
1047     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1048 }
1049
1050 check_class_headers_cpp(){
1051     log check_class_headers_cpp "$@"
1052     headers=$1
1053     classes=$2
1054     shift 2
1055     {
1056         for hdr in $headers; do
1057             echo "#include <$hdr>"
1058         done
1059         echo "int main(void) { "
1060         i=1
1061         for class in $classes; do
1062             echo "$class obj$i;"
1063             i=$(expr $i + 1)
1064         done
1065         echo "return 0; }"
1066     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1067 }
1068
1069 check_cpp_condition(){
1070     log check_cpp_condition "$@"
1071     header=$1
1072     condition=$2
1073     shift 2
1074     check_cpp "$@" <<EOF
1075 #include <$header>
1076 #if !($condition)
1077 #error "unsatisfied condition: $condition"
1078 #endif
1079 EOF
1080 }
1081
1082 check_lib(){
1083     log check_lib "$@"
1084     header="$1"
1085     func="$2"
1086     shift 2
1087     check_header $header && check_func $func "$@" && add_extralibs "$@"
1088 }
1089
1090 check_lib2(){
1091     log check_lib2 "$@"
1092     headers="$1"
1093     funcs="$2"
1094     shift 2
1095     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1096 }
1097
1098 check_lib_cpp(){
1099     log check_lib_cpp "$@"
1100     headers="$1"
1101     classes="$2"
1102     shift 2
1103     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1104 }
1105
1106 check_pkg_config(){
1107     log check_pkg_config "$@"
1108     pkgandversion="$1"
1109     pkg="${1%% *}"
1110     headers="$2"
1111     funcs="$3"
1112     shift 3
1113     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1114     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1115     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1116     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1117         set_safe ${pkg}_cflags $pkg_cflags   &&
1118         set_safe ${pkg}_libs   $pkg_libs
1119 }
1120
1121 check_exec(){
1122     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1123 }
1124
1125 check_exec_crash(){
1126     code=$(cat)
1127
1128     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1129     # are safe but may not be available everywhere.  Thus we use
1130     # raise(SIGTERM) instead.  The check is run in a subshell so we
1131     # can redirect the "Terminated" message from the shell.  SIGBUS
1132     # is not defined by standard C so it is used conditionally.
1133
1134     (check_exec "$@") >> $logfile 2>&1 <<EOF
1135 #include <signal.h>
1136 static void sighandler(int sig){
1137     raise(SIGTERM);
1138 }
1139 int foo(void){
1140     $code
1141 }
1142 int (*func_ptr)(void) = foo;
1143 int main(void){
1144     signal(SIGILL, sighandler);
1145     signal(SIGFPE, sighandler);
1146     signal(SIGSEGV, sighandler);
1147 #ifdef SIGBUS
1148     signal(SIGBUS, sighandler);
1149 #endif
1150     return func_ptr();
1151 }
1152 EOF
1153 }
1154
1155 check_type(){
1156     log check_type "$@"
1157     headers=$1
1158     type=$2
1159     shift 2
1160     disable_safe "$type"
1161     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1162 }
1163
1164 check_struct(){
1165     log check_struct "$@"
1166     headers=$1
1167     struct=$2
1168     member=$3
1169     shift 3
1170     disable_safe "${struct}_${member}"
1171     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1172         enable_safe "${struct}_${member}"
1173 }
1174
1175 check_builtin(){
1176     log check_builtin "$@"
1177     name=$1
1178     headers=$2
1179     builtin=$3
1180     shift 3
1181     disable "$name"
1182     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1183 }
1184
1185 check_compile_assert(){
1186     log check_compile_assert "$@"
1187     name=$1
1188     headers=$2
1189     condition=$3
1190     shift 3
1191     disable "$name"
1192     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1193 }
1194
1195 require(){
1196     name="$1"
1197     header="$2"
1198     func="$3"
1199     shift 3
1200     check_lib $header $func "$@" || die "ERROR: $name not found"
1201 }
1202
1203 require2(){
1204     name="$1"
1205     headers="$2"
1206     func="$3"
1207     shift 3
1208     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1209 }
1210
1211 require_cpp(){
1212     name="$1"
1213     headers="$2"
1214     classes="$3"
1215     shift 3
1216     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1217 }
1218
1219 use_pkg_config(){
1220     pkg="$1"
1221     check_pkg_config "$@" || return 1
1222     add_cflags    $(get_safe ${pkg}_cflags)
1223     add_extralibs $(get_safe ${pkg}_libs)
1224 }
1225
1226 require_pkg_config(){
1227     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1228 }
1229
1230 require_libfreetype(){
1231     log require_libfreetype "$@"
1232     pkg="freetype2"
1233     check_cmd $pkg_config --exists --print-errors $pkg \
1234       || die "ERROR: $pkg not found"
1235     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1236     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1237     {
1238         echo "#include <ft2build.h>"
1239         echo "#include FT_FREETYPE_H"
1240         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1241         echo "int main(void) { return 0; }"
1242     } | check_ld "cc" $pkg_cflags $pkg_libs \
1243       && set_safe ${pkg}_cflags $pkg_cflags \
1244       && set_safe ${pkg}_libs   $pkg_libs \
1245       || die "ERROR: $pkg not found"
1246     add_cflags    $(get_safe ${pkg}_cflags)
1247     add_extralibs $(get_safe ${pkg}_libs)
1248 }
1249
1250 hostcc_e(){
1251     eval printf '%s\\n' $HOSTCC_E
1252 }
1253
1254 hostcc_o(){
1255     eval printf '%s\\n' $HOSTCC_O
1256 }
1257
1258 check_host_cc(){
1259     log check_host_cc "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1263 }
1264
1265 check_host_cpp(){
1266     log check_host_cpp "$@"
1267     cat > $TMPC
1268     log_file $TMPC
1269     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1270 }
1271
1272 check_host_cppflags(){
1273     log check_host_cppflags "$@"
1274     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1275 int x;
1276 EOF
1277 }
1278
1279 check_host_cflags(){
1280     log check_host_cflags "$@"
1281     set -- $($host_cflags_filter "$@")
1282     check_host_cc "$@" <<EOF && append host_cflags "$@"
1283 int x;
1284 EOF
1285 }
1286
1287 check_host_cpp_condition(){
1288     log check_host_cpp_condition "$@"
1289     header=$1
1290     condition=$2
1291     shift 2
1292     check_host_cpp "$@" <<EOF
1293 #include <$header>
1294 #if !($condition)
1295 #error "unsatisfied condition: $condition"
1296 #endif
1297 EOF
1298 }
1299
1300 apply(){
1301     file=$1
1302     shift
1303     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1304 }
1305
1306 cp_if_changed(){
1307     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1308     mkdir -p "$(dirname $2)"
1309     $cp_f "$1" "$2"
1310 }
1311
1312 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1313 # system-dependent things.
1314
1315 COMPONENT_LIST="
1316     bsfs
1317     decoders
1318     demuxers
1319     encoders
1320     filters
1321     hwaccels
1322     indevs
1323     muxers
1324     outdevs
1325     parsers
1326     protocols
1327 "
1328
1329 EXAMPLE_LIST="
1330     avio_reading_example
1331     avio_list_dir_example
1332     decoding_encoding_example
1333     demuxing_decoding_example
1334     extract_mvs_example
1335     filter_audio_example
1336     filtering_audio_example
1337     filtering_video_example
1338     metadata_example
1339     muxing_example
1340     qsvdec_example
1341     remuxing_example
1342     resampling_audio_example
1343     scaling_video_example
1344     transcode_aac_example
1345     transcoding_example
1346 "
1347
1348 EXTERNAL_LIBRARY_LIST="
1349     avisynth
1350     bzlib
1351     crystalhd
1352     decklink
1353     frei0r
1354     gnutls
1355     iconv
1356     ladspa
1357     libaacplus
1358     libass
1359     libbluray
1360     libbs2b
1361     libcaca
1362     libcdio
1363     libcelt
1364     libdc1394
1365     libdcadec
1366     libfaac
1367     libfdk_aac
1368     libflite
1369     libfontconfig
1370     libfreetype
1371     libfribidi
1372     libgme
1373     libgsm
1374     libiec61883
1375     libilbc
1376     libmfx
1377     libmodplug
1378     libmp3lame
1379     libnut
1380     libopencore_amrnb
1381     libopencore_amrwb
1382     libopencv
1383     libopenh264
1384     libopenjpeg
1385     libopus
1386     libpulse
1387     libquvi
1388     librtmp
1389     libschroedinger
1390     libshine
1391     libsmbclient
1392     libsoxr
1393     libspeex
1394     libssh
1395     libstagefright_h264
1396     libtheora
1397     libtwolame
1398     libutvideo
1399     libv4l2
1400     libvidstab
1401     libvo_aacenc
1402     libvo_amrwbenc
1403     libvorbis
1404     libvpx
1405     libwavpack
1406     libwebp
1407     libx264
1408     libx265
1409     libxavs
1410     libxcb
1411     libxcb_shm
1412     libxcb_shape
1413     libxcb_xfixes
1414     libxvid
1415     libzmq
1416     libzvbi
1417     lzma
1418     mmal
1419     nvenc
1420     openal
1421     opencl
1422     opengl
1423     openssl
1424     sdl
1425     x11grab
1426     xlib
1427     zlib
1428 "
1429
1430 DOCUMENT_LIST="
1431     doc
1432     htmlpages
1433     manpages
1434     podpages
1435     txtpages
1436 "
1437
1438 FEATURE_LIST="
1439     ftrapv
1440     gray
1441     hardcoded_tables
1442     runtime_cpudetect
1443     safe_bitstream_reader
1444     shared
1445     small
1446     static
1447     swscale_alpha
1448 "
1449
1450 HWACCEL_LIST="
1451     dxva2
1452     vaapi
1453     vda
1454     vdpau
1455     xvmc
1456 "
1457
1458 LIBRARY_LIST="
1459     avcodec
1460     avdevice
1461     avfilter
1462     avformat
1463     avresample
1464     avutil
1465     postproc
1466     swresample
1467     swscale
1468 "
1469
1470 LICENSE_LIST="
1471     gpl
1472     nonfree
1473     version3
1474 "
1475
1476 PROGRAM_LIST="
1477     ffplay
1478     ffprobe
1479     ffserver
1480     ffmpeg
1481 "
1482
1483 SUBSYSTEM_LIST="
1484     dct
1485     dwt
1486     error_resilience
1487     faan
1488     fast_unaligned
1489     fft
1490     lsp
1491     lzo
1492     mdct
1493     pixelutils
1494     network
1495     rdft
1496 "
1497
1498 CONFIG_LIST="
1499     $COMPONENT_LIST
1500     $DOCUMENT_LIST
1501     $EXAMPLE_LIST
1502     $EXTERNAL_LIBRARY_LIST
1503     $FEATURE_LIST
1504     $HWACCEL_LIST
1505     $LICENSE_LIST
1506     $LIBRARY_LIST
1507     $PROGRAM_LIST
1508     $SUBSYSTEM_LIST
1509     fontconfig
1510     incompatible_libav_abi
1511     memalign_hack
1512     memory_poisoning
1513     neon_clobber_test
1514     pic
1515     pod2man
1516     raise_major
1517     thumb
1518     valgrind_backtrace
1519     xmm_clobber_test
1520 "
1521
1522 THREADS_LIST="
1523     pthreads
1524     os2threads
1525     w32threads
1526 "
1527
1528 ATOMICS_LIST="
1529     atomics_gcc
1530     atomics_suncc
1531     atomics_win32
1532 "
1533
1534 ARCH_LIST="
1535     aarch64
1536     alpha
1537     arm
1538     avr32
1539     avr32_ap
1540     avr32_uc
1541     bfin
1542     ia64
1543     m68k
1544     mips
1545     mips64
1546     parisc
1547     ppc
1548     ppc64
1549     s390
1550     sh4
1551     sparc
1552     sparc64
1553     tilegx
1554     tilepro
1555     tomi
1556     x86
1557     x86_32
1558     x86_64
1559 "
1560
1561 ARCH_EXT_LIST_ARM="
1562     armv5te
1563     armv6
1564     armv6t2
1565     armv8
1566     neon
1567     vfp
1568     vfpv3
1569     setend
1570 "
1571
1572 ARCH_EXT_LIST_MIPS="
1573     mipsfpu
1574     mips32r2
1575     mips32r5
1576     mips64r6
1577     mipsdspr1
1578     mipsdspr2
1579     msa
1580 "
1581
1582 ARCH_EXT_LIST_LOONGSON="
1583     loongson3
1584 "
1585
1586 ARCH_EXT_LIST_X86_SIMD="
1587     amd3dnow
1588     amd3dnowext
1589     avx
1590     avx2
1591     fma3
1592     fma4
1593     mmx
1594     mmxext
1595     sse
1596     sse2
1597     sse3
1598     sse4
1599     sse42
1600     ssse3
1601     xop
1602 "
1603
1604 ARCH_EXT_LIST_PPC="
1605     altivec
1606     dcbzl
1607     ldbrx
1608     ppc4xx
1609     vsx
1610 "
1611
1612 ARCH_EXT_LIST_X86="
1613     $ARCH_EXT_LIST_X86_SIMD
1614     cpunop
1615     i686
1616 "
1617
1618 ARCH_EXT_LIST="
1619     $ARCH_EXT_LIST_ARM
1620     $ARCH_EXT_LIST_PPC
1621     $ARCH_EXT_LIST_X86
1622     $ARCH_EXT_LIST_MIPS
1623     $ARCH_EXT_LIST_LOONGSON
1624 "
1625
1626 ARCH_FEATURES="
1627     aligned_stack
1628     fast_64bit
1629     fast_clz
1630     fast_cmov
1631     local_aligned_8
1632     local_aligned_16
1633     local_aligned_32
1634     simd_align_16
1635 "
1636
1637 BUILTIN_LIST="
1638     atomic_cas_ptr
1639     atomic_compare_exchange
1640     machine_rw_barrier
1641     MemoryBarrier
1642     mm_empty
1643     rdtsc
1644     sarestart
1645     sync_val_compare_and_swap
1646 "
1647 HAVE_LIST_CMDLINE="
1648     inline_asm
1649     symver
1650     yasm
1651 "
1652
1653 HAVE_LIST_PUB="
1654     bigendian
1655     fast_unaligned
1656     incompatible_libav_abi
1657 "
1658
1659 HEADERS_LIST="
1660     alsa_asoundlib_h
1661     altivec_h
1662     arpa_inet_h
1663     asm_types_h
1664     cdio_paranoia_h
1665     cdio_paranoia_paranoia_h
1666     dev_bktr_ioctl_bt848_h
1667     dev_bktr_ioctl_meteor_h
1668     dev_ic_bt8xx_h
1669     dev_video_bktr_ioctl_bt848_h
1670     dev_video_meteor_ioctl_meteor_h
1671     direct_h
1672     dlfcn_h
1673     dxva_h
1674     ES2_gl_h
1675     gsm_h
1676     io_h
1677     mach_mach_time_h
1678     machine_ioctl_bt848_h
1679     machine_ioctl_meteor_h
1680     malloc_h
1681     openjpeg_1_5_openjpeg_h
1682     OpenGL_gl3_h
1683     poll_h
1684     sndio_h
1685     soundcard_h
1686     sys_mman_h
1687     sys_param_h
1688     sys_resource_h
1689     sys_select_h
1690     sys_soundcard_h
1691     sys_time_h
1692     sys_un_h
1693     sys_videoio_h
1694     termios_h
1695     udplite_h
1696     unistd_h
1697     valgrind_valgrind_h
1698     windows_h
1699     winsock2_h
1700 "
1701
1702 INTRINSICS_LIST="
1703     intrinsics_neon
1704 "
1705
1706 MATH_FUNCS="
1707     atanf
1708     atan2f
1709     cbrt
1710     cbrtf
1711     cosf
1712     exp2
1713     exp2f
1714     expf
1715     isinf
1716     isnan
1717     ldexpf
1718     llrint
1719     llrintf
1720     log2
1721     log2f
1722     log10f
1723     lrint
1724     lrintf
1725     powf
1726     rint
1727     round
1728     roundf
1729     sinf
1730     trunc
1731     truncf
1732 "
1733
1734 SYSTEM_FUNCS="
1735     access
1736     aligned_malloc
1737     clock_gettime
1738     closesocket
1739     CommandLineToArgvW
1740     CoTaskMemFree
1741     CryptGenRandom
1742     dlopen
1743     fcntl
1744     flt_lim
1745     fork
1746     getaddrinfo
1747     gethrtime
1748     getopt
1749     GetProcessAffinityMask
1750     GetProcessMemoryInfo
1751     GetProcessTimes
1752     getrusage
1753     getservbyport
1754     GetSystemTimeAsFileTime
1755     gettimeofday
1756     glob
1757     glXGetProcAddress
1758     gmtime_r
1759     inet_aton
1760     isatty
1761     jack_port_get_latency_range
1762     kbhit
1763     localtime_r
1764     lzo1x_999_compress
1765     mach_absolute_time
1766     MapViewOfFile
1767     memalign
1768     mkstemp
1769     mmap
1770     mprotect
1771     nanosleep
1772     PeekNamedPipe
1773     posix_memalign
1774     pthread_cancel
1775     sched_getaffinity
1776     SetConsoleTextAttribute
1777     setmode
1778     setrlimit
1779     Sleep
1780     strerror_r
1781     sysconf
1782     sysctl
1783     usleep
1784     VirtualAlloc
1785     wglGetProcAddress
1786 "
1787
1788 TOOLCHAIN_FEATURES="
1789     as_dn_directive
1790     as_func
1791     as_object_arch
1792     asm_mod_q
1793     attribute_may_alias
1794     attribute_packed
1795     ebp_available
1796     ebx_available
1797     gnu_as
1798     gnu_windres
1799     ibm_asm
1800     inline_asm_labels
1801     inline_asm_nonlocal_labels
1802     inline_asm_direct_symbol_refs
1803     pragma_deprecated
1804     rsync_contimeout
1805     symver_asm_label
1806     symver_gnu_asm
1807     vfp_args
1808     xform_asm
1809     xmm_clobbers
1810 "
1811
1812 TYPES_LIST="
1813     CONDITION_VARIABLE_Ptr
1814     DXVA_PicParams_HEVC
1815     socklen_t
1816     struct_addrinfo
1817     struct_group_source_req
1818     struct_ip_mreq_source
1819     struct_ipv6_mreq
1820     struct_pollfd
1821     struct_rusage_ru_maxrss
1822     struct_sctp_event_subscribe
1823     struct_sockaddr_in6
1824     struct_sockaddr_sa_len
1825     struct_sockaddr_storage
1826     struct_stat_st_mtim_tv_nsec
1827     struct_v4l2_frmivalenum_discrete
1828 "
1829
1830 HAVE_LIST="
1831     $ARCH_EXT_LIST
1832     $(add_suffix _external $ARCH_EXT_LIST)
1833     $(add_suffix _inline   $ARCH_EXT_LIST)
1834     $ARCH_FEATURES
1835     $ATOMICS_LIST
1836     $BUILTIN_LIST
1837     $HAVE_LIST_CMDLINE
1838     $HAVE_LIST_PUB
1839     $HEADERS_LIST
1840     $INTRINSICS_LIST
1841     $MATH_FUNCS
1842     $SYSTEM_FUNCS
1843     $THREADS_LIST
1844     $TOOLCHAIN_FEATURES
1845     $TYPES_LIST
1846     atomics_native
1847     dos_paths
1848     dxva2api_cobj
1849     dxva2_lib
1850     libc_msvcrt
1851     libdc1394_1
1852     libdc1394_2
1853     makeinfo
1854     makeinfo_html
1855     perl
1856     pod2man
1857     sdl
1858     section_data_rel_ro
1859     texi2html
1860     threads
1861     vaapi_x11
1862     vdpau_x11
1863     xlib
1864 "
1865
1866 # options emitted with CONFIG_ prefix but not available on the command line
1867 CONFIG_EXTRA="
1868     aandcttables
1869     ac3dsp
1870     audio_frame_queue
1871     audiodsp
1872     blockdsp
1873     bswapdsp
1874     cabac
1875     dvprofile
1876     exif
1877     faandct
1878     faanidct
1879     fdctdsp
1880     fmtconvert
1881     frame_thread_encoder
1882     gcrypt
1883     golomb
1884     gplv3
1885     h263dsp
1886     h264chroma
1887     h264dsp
1888     h264pred
1889     h264qpel
1890     hpeldsp
1891     huffman
1892     huffyuvdsp
1893     huffyuvencdsp
1894     idctdsp
1895     iirfilter
1896     imdct15
1897     intrax8
1898     jpegtables
1899     lgplv3
1900     llauddsp
1901     llviddsp
1902     lpc
1903     me_cmp
1904     mpeg_er
1905     mpegaudio
1906     mpegaudiodsp
1907     mpegvideo
1908     mpegvideoenc
1909     nettle
1910     pixblockdsp
1911     qpeldsp
1912     qsv
1913     qsvdec
1914     qsvenc
1915     rangecoder
1916     riffdec
1917     riffenc
1918     rtpdec
1919     rtpenc_chain
1920     sinewin
1921     startcode
1922     tpeldsp
1923     videodsp
1924     vp3dsp
1925     wma_freqs
1926 "
1927
1928 CMDLINE_SELECT="
1929     $ARCH_EXT_LIST
1930     $CONFIG_LIST
1931     $HAVE_LIST_CMDLINE
1932     $THREADS_LIST
1933     asm
1934     cross_compile
1935     debug
1936     extra_warnings
1937     logging
1938     lto
1939     optimizations
1940     rpath
1941     stripping
1942 "
1943
1944 PATHS_LIST="
1945     bindir
1946     datadir
1947     docdir
1948     incdir
1949     libdir
1950     mandir
1951     prefix
1952     shlibdir
1953 "
1954
1955 CMDLINE_SET="
1956     $PATHS_LIST
1957     ar
1958     arch
1959     as
1960     assert_level
1961     build_suffix
1962     cc
1963     cpu
1964     cross_prefix
1965     cxx
1966     dep_cc
1967     doxygen
1968     extra_version
1969     gas
1970     host_cc
1971     host_cflags
1972     host_ld
1973     host_ldflags
1974     host_libs
1975     host_os
1976     install
1977     ld
1978     logfile
1979     malloc_prefix
1980     nm
1981     optflags
1982     pkg_config
1983     pkg_config_flags
1984     progs_suffix
1985     random_seed
1986     ranlib
1987     samples
1988     strip
1989     sws_max_filter_size
1990     sysinclude
1991     sysroot
1992     target_exec
1993     target_os
1994     target_path
1995     target_samples
1996     tempprefix
1997     toolchain
1998     valgrind
1999     yasmexe
2000 "
2001
2002 CMDLINE_APPEND="
2003     extra_cflags
2004     extra_cxxflags
2005     host_cppflags
2006 "
2007
2008 # code dependency declarations
2009
2010 # architecture extensions
2011
2012 armv5te_deps="arm"
2013 armv6_deps="arm"
2014 armv6t2_deps="arm"
2015 armv8_deps="aarch64"
2016 neon_deps_any="aarch64 arm"
2017 intrinsics_neon_deps="neon"
2018 vfp_deps_any="aarch64 arm"
2019 vfpv3_deps="vfp"
2020 setend_deps="arm"
2021
2022 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2023
2024 mipsfpu_deps="mips"
2025 mipsdspr1_deps="mips"
2026 mipsdspr2_deps="mips"
2027 mips32r2_deps="mips"
2028 mips32r5_deps="mips"
2029 mips64r6_deps="mips"
2030 msa_deps="mips"
2031 loongson3_deps="mips"
2032
2033 altivec_deps="ppc"
2034 dcbzl_deps="ppc"
2035 ldbrx_deps="ppc"
2036 ppc4xx_deps="ppc"
2037 vsx_deps="ppc"
2038
2039 cpunop_deps="i686"
2040 x86_64_select="i686"
2041 x86_64_suggest="fast_cmov"
2042
2043 amd3dnow_deps="mmx"
2044 amd3dnowext_deps="amd3dnow"
2045 i686_deps="x86"
2046 mmx_deps="x86"
2047 mmxext_deps="mmx"
2048 sse_deps="mmxext"
2049 sse2_deps="sse"
2050 sse3_deps="sse2"
2051 ssse3_deps="sse3"
2052 sse4_deps="ssse3"
2053 sse42_deps="sse4"
2054 avx_deps="sse42"
2055 xop_deps="avx"
2056 fma3_deps="avx"
2057 fma4_deps="avx"
2058 avx2_deps="avx"
2059
2060 mmx_external_deps="yasm"
2061 mmx_inline_deps="inline_asm"
2062 mmx_suggest="mmx_external mmx_inline"
2063
2064 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2065     eval dep=\$${ext}_deps
2066     eval ${ext}_external_deps='"${dep}_external"'
2067     eval ${ext}_inline_deps='"${dep}_inline"'
2068     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2069 done
2070
2071 aligned_stack_if_any="aarch64 ppc x86"
2072 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2073 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2074 fast_unaligned_if_any="aarch64 ppc x86"
2075 simd_align_16_if_any="altivec neon sse"
2076
2077 # system capabilities
2078 symver_if_any="symver_asm_label symver_gnu_asm"
2079 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2080
2081 # threading support
2082 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2083 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2084 atomics_win32_if="MemoryBarrier"
2085 atomics_native_if_any="$ATOMICS_LIST"
2086 w32threads_deps="atomics_native"
2087 threads_if_any="$THREADS_LIST"
2088
2089 # subsystems
2090 dct_select="rdft"
2091 error_resilience_select="me_cmp"
2092 faandct_deps="faan fdctdsp"
2093 faanidct_deps="faan idctdsp"
2094 frame_thread_encoder_deps="encoders threads"
2095 intrax8_select="error_resilience"
2096 mdct_select="fft"
2097 rdft_select="fft"
2098 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2099 mpeg_er_select="error_resilience"
2100 mpegaudio_select="mpegaudiodsp"
2101 mpegaudiodsp_select="dct"
2102 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2103 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2104 qsvdec_select="qsv"
2105 qsvenc_select="qsv"
2106
2107 # decoders / encoders
2108 aac_decoder_select="imdct15 mdct sinewin"
2109 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2110 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2111 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2112 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2113 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2114 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2115 aic_decoder_select="golomb idctdsp"
2116 alac_encoder_select="lpc"
2117 als_decoder_select="bswapdsp"
2118 amrnb_decoder_select="lsp"
2119 amrwb_decoder_select="lsp"
2120 amv_decoder_select="sp5x_decoder exif"
2121 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2122 ape_decoder_select="bswapdsp llauddsp"
2123 apng_decoder_select="zlib"
2124 apng_encoder_select="huffyuvencdsp zlib"
2125 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2126 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2127 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2128 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2129 atrac1_decoder_select="mdct sinewin"
2130 atrac3_decoder_select="mdct"
2131 atrac3p_decoder_select="mdct sinewin"
2132 avrn_decoder_select="exif jpegtables"
2133 bink_decoder_select="blockdsp hpeldsp"
2134 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2135 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2136 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2137 cllc_decoder_select="bswapdsp"
2138 comfortnoise_encoder_select="lpc"
2139 cook_decoder_select="audiodsp mdct sinewin"
2140 cscd_decoder_select="lzo"
2141 cscd_decoder_suggest="zlib"
2142 dca_decoder_select="fmtconvert mdct"
2143 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2144 dnxhd_decoder_select="blockdsp idctdsp"
2145 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2146 dvvideo_decoder_select="dvprofile idctdsp"
2147 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2148 dxa_decoder_select="zlib"
2149 eac3_decoder_select="ac3_decoder"
2150 eac3_encoder_select="ac3_encoder"
2151 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2152 eatgq_decoder_select="aandcttables"
2153 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2154 exr_decoder_select="zlib"
2155 ffv1_decoder_select="golomb rangecoder"
2156 ffv1_encoder_select="rangecoder"
2157 ffvhuff_decoder_select="huffyuv_decoder"
2158 ffvhuff_encoder_select="huffyuv_encoder"
2159 fic_decoder_select="golomb"
2160 flac_decoder_select="golomb"
2161 flac_encoder_select="bswapdsp golomb lpc"
2162 flashsv_decoder_select="zlib"
2163 flashsv_encoder_select="zlib"
2164 flashsv2_encoder_select="zlib"
2165 flashsv2_decoder_select="zlib"
2166 flv_decoder_select="h263_decoder"
2167 flv_encoder_select="h263_encoder"
2168 fourxm_decoder_select="blockdsp bswapdsp"
2169 fraps_decoder_select="bswapdsp huffman"
2170 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2171 g729_decoder_select="audiodsp"
2172 h261_decoder_select="mpeg_er mpegvideo"
2173 h261_encoder_select="aandcttables mpegvideoenc"
2174 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2175 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2176 h263i_decoder_select="h263_decoder"
2177 h263p_decoder_select="h263_decoder"
2178 h263p_encoder_select="h263_encoder"
2179 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2180 h264_decoder_suggest="error_resilience"
2181 h264_qsv_decoder_deps="libmfx"
2182 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2183 h264_qsv_encoder_deps="libmfx"
2184 h264_qsv_encoder_select="qsvenc"
2185 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2186 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2187 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2188 iac_decoder_select="imc_decoder"
2189 imc_decoder_select="bswapdsp fft mdct sinewin"
2190 indeo3_decoder_select="hpeldsp"
2191 interplay_video_decoder_select="hpeldsp"
2192 jpegls_decoder_select="golomb mjpeg_decoder"
2193 jpegls_encoder_select="golomb"
2194 jv_decoder_select="blockdsp"
2195 lagarith_decoder_select="huffyuvdsp"
2196 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2197 loco_decoder_select="golomb"
2198 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2199 metasound_decoder_select="lsp mdct sinewin"
2200 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2201 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2202 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2203 mjpegb_decoder_select="mjpeg_decoder"
2204 mlp_decoder_select="mlp_parser"
2205 motionpixels_decoder_select="bswapdsp"
2206 mp1_decoder_select="mpegaudio"
2207 mp1float_decoder_select="mpegaudio"
2208 mp2_decoder_select="mpegaudio"
2209 mp2float_decoder_select="mpegaudio"
2210 mp3_decoder_select="mpegaudio"
2211 mp3adu_decoder_select="mpegaudio"
2212 mp3adufloat_decoder_select="mpegaudio"
2213 mp3float_decoder_select="mpegaudio"
2214 mp3on4_decoder_select="mpegaudio"
2215 mp3on4float_decoder_select="mpegaudio"
2216 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2217 mpc8_decoder_select="mpegaudiodsp"
2218 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2219 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2220 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2221 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2222 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2223 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2224 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2225 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2226 mpeg4_encoder_select="h263_encoder"
2227 msmpeg4v1_decoder_select="h263_decoder"
2228 msmpeg4v2_decoder_select="h263_decoder"
2229 msmpeg4v2_encoder_select="h263_encoder"
2230 msmpeg4v3_decoder_select="h263_decoder"
2231 msmpeg4v3_encoder_select="h263_encoder"
2232 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2233 mxpeg_decoder_select="mjpeg_decoder"
2234 nellymoser_decoder_select="mdct sinewin"
2235 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2236 nuv_decoder_select="idctdsp lzo"
2237 on2avc_decoder_select="mdct"
2238 opus_decoder_deps="swresample"
2239 opus_decoder_select="imdct15"
2240 png_decoder_select="zlib"
2241 png_encoder_select="huffyuvencdsp zlib"
2242 prores_decoder_select="blockdsp idctdsp"
2243 prores_encoder_select="fdctdsp"
2244 qcelp_decoder_select="lsp"
2245 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2246 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2247 ra_144_decoder_select="audiodsp"
2248 ralf_decoder_select="golomb"
2249 rawvideo_decoder_select="bswapdsp"
2250 rtjpeg_decoder_select="me_cmp"
2251 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2252 rv10_encoder_select="h263_encoder"
2253 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2254 rv20_encoder_select="h263_encoder"
2255 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2256 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2257 shorten_decoder_select="golomb"
2258 sipr_decoder_select="lsp"
2259 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2260 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2261 sonic_decoder_select="golomb rangecoder"
2262 sonic_encoder_select="golomb rangecoder"
2263 sonic_ls_encoder_select="golomb rangecoder"
2264 sp5x_decoder_select="mjpeg_decoder"
2265 svq1_decoder_select="hpeldsp"
2266 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2267 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2268 svq3_decoder_suggest="zlib"
2269 tak_decoder_select="audiodsp"
2270 tdsc_decoder_select="zlib mjpeg_decoder"
2271 theora_decoder_select="vp3_decoder"
2272 thp_decoder_select="mjpeg_decoder"
2273 tiff_decoder_suggest="zlib lzma"
2274 tiff_encoder_suggest="zlib"
2275 truehd_decoder_select="mlp_parser"
2276 truemotion2_decoder_select="bswapdsp"
2277 truespeech_decoder_select="bswapdsp"
2278 tscc_decoder_select="zlib"
2279 twinvq_decoder_select="mdct lsp sinewin"
2280 utvideo_decoder_select="bswapdsp"
2281 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2282 vble_decoder_select="huffyuvdsp"
2283 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2284 vc1image_decoder_select="vc1_decoder"
2285 vorbis_decoder_select="mdct"
2286 vorbis_encoder_select="mdct"
2287 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2288 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2289 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2290 vp6a_decoder_select="vp6_decoder"
2291 vp6f_decoder_select="vp6_decoder"
2292 vp7_decoder_select="h264pred videodsp"
2293 vp8_decoder_select="h264pred videodsp"
2294 vp9_decoder_select="videodsp vp9_parser"
2295 webp_decoder_select="vp8_decoder"
2296 wmalossless_decoder_select="llauddsp"
2297 wmapro_decoder_select="mdct sinewin wma_freqs"
2298 wmav1_decoder_select="mdct sinewin wma_freqs"
2299 wmav1_encoder_select="mdct sinewin wma_freqs"
2300 wmav2_decoder_select="mdct sinewin wma_freqs"
2301 wmav2_encoder_select="mdct sinewin wma_freqs"
2302 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2303 wmv1_decoder_select="h263_decoder"
2304 wmv1_encoder_select="h263_encoder"
2305 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2306 wmv2_encoder_select="h263_encoder"
2307 wmv3_decoder_select="vc1_decoder"
2308 wmv3image_decoder_select="wmv3_decoder"
2309 zerocodec_decoder_select="zlib"
2310 zlib_decoder_select="zlib"
2311 zlib_encoder_select="zlib"
2312 zmbv_decoder_select="zlib"
2313 zmbv_encoder_select="zlib"
2314
2315 # hardware accelerators
2316 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2317 dxva2_deps="dxva2api_h"
2318 vaapi_deps="va_va_h"
2319 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2320 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2321 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2322 xvmc_deps="X11_extensions_XvMClib_h"
2323
2324 h263_vaapi_hwaccel_deps="vaapi"
2325 h263_vaapi_hwaccel_select="h263_decoder"
2326 h263_vdpau_hwaccel_deps="vdpau"
2327 h263_vdpau_hwaccel_select="h263_decoder"
2328 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2329 h264_dxva2_hwaccel_deps="dxva2"
2330 h264_dxva2_hwaccel_select="h264_decoder"
2331 h264_mmal_decoder_deps="mmal"
2332 h264_mmal_hwaccel_deps="mmal"
2333 h264_mmal_decoder_select="h264_decoder"
2334 h264_mmal_encoder_deps="mmal"
2335 h264_qsv_hwaccel_deps="libmfx"
2336 h264_vaapi_hwaccel_deps="vaapi"
2337 h264_vaapi_hwaccel_select="h264_decoder"
2338 h264_vda_decoder_deps="vda"
2339 h264_vda_decoder_select="h264_decoder"
2340 h264_vda_hwaccel_deps="vda"
2341 h264_vda_hwaccel_select="h264_decoder"
2342 h264_vda_old_hwaccel_deps="vda"
2343 h264_vda_old_hwaccel_select="h264_decoder"
2344 h264_vdpau_decoder_deps="vdpau"
2345 h264_vdpau_decoder_select="h264_decoder"
2346 h264_vdpau_hwaccel_deps="vdpau"
2347 h264_vdpau_hwaccel_select="h264_decoder"
2348 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2349 hevc_dxva2_hwaccel_select="hevc_decoder"
2350 mpeg_vdpau_decoder_deps="vdpau"
2351 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2352 mpeg_xvmc_hwaccel_deps="xvmc"
2353 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2354 mpeg1_vdpau_decoder_deps="vdpau"
2355 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2356 mpeg1_vdpau_hwaccel_deps="vdpau"
2357 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2358 mpeg1_xvmc_hwaccel_deps="xvmc"
2359 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2360 mpeg2_crystalhd_decoder_select="crystalhd"
2361 mpeg2_dxva2_hwaccel_deps="dxva2"
2362 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2363 mpeg2_vaapi_hwaccel_deps="vaapi"
2364 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2365 mpeg2_vdpau_hwaccel_deps="vdpau"
2366 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2367 mpeg2_xvmc_hwaccel_deps="xvmc"
2368 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2369 mpeg4_crystalhd_decoder_select="crystalhd"
2370 mpeg4_vaapi_hwaccel_deps="vaapi"
2371 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2372 mpeg4_vdpau_decoder_deps="vdpau"
2373 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2374 mpeg4_vdpau_hwaccel_deps="vdpau"
2375 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2376 msmpeg4_crystalhd_decoder_select="crystalhd"
2377 vc1_crystalhd_decoder_select="crystalhd"
2378 vc1_dxva2_hwaccel_deps="dxva2"
2379 vc1_dxva2_hwaccel_select="vc1_decoder"
2380 vc1_vaapi_hwaccel_deps="vaapi"
2381 vc1_vaapi_hwaccel_select="vc1_decoder"
2382 vc1_vdpau_decoder_deps="vdpau"
2383 vc1_vdpau_decoder_select="vc1_decoder"
2384 vc1_vdpau_hwaccel_deps="vdpau"
2385 vc1_vdpau_hwaccel_select="vc1_decoder"
2386 wmv3_crystalhd_decoder_select="crystalhd"
2387 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2388 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2389 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2390 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2391
2392 # parsers
2393 h264_parser_select="h264_decoder"
2394 hevc_parser_select="hevc_decoder"
2395 mpegvideo_parser_select="mpegvideo"
2396 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2397 vc1_parser_select="mpegvideo startcode vc1_decoder"
2398
2399 # bitstream_filters
2400 mjpeg2jpeg_bsf_select="jpegtables"
2401
2402 # external libraries
2403 libaacplus_encoder_deps="libaacplus"
2404 libcelt_decoder_deps="libcelt"
2405 libdcadec_decoder_deps="libdcadec"
2406 libfaac_encoder_deps="libfaac"
2407 libfaac_encoder_select="audio_frame_queue"
2408 libfdk_aac_decoder_deps="libfdk_aac"
2409 libfdk_aac_encoder_deps="libfdk_aac"
2410 libfdk_aac_encoder_select="audio_frame_queue"
2411 libgme_demuxer_deps="libgme"
2412 libgsm_decoder_deps="libgsm"
2413 libgsm_encoder_deps="libgsm"
2414 libgsm_ms_decoder_deps="libgsm"
2415 libgsm_ms_encoder_deps="libgsm"
2416 libilbc_decoder_deps="libilbc"
2417 libilbc_encoder_deps="libilbc"
2418 libmodplug_demuxer_deps="libmodplug"
2419 libmp3lame_encoder_deps="libmp3lame"
2420 libmp3lame_encoder_select="audio_frame_queue"
2421 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2422 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2423 libopencore_amrnb_encoder_select="audio_frame_queue"
2424 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2425 libopenh264_encoder_deps="libopenh264"
2426 libopenjpeg_decoder_deps="libopenjpeg"
2427 libopenjpeg_encoder_deps="libopenjpeg"
2428 libopus_decoder_deps="libopus"
2429 libopus_encoder_deps="libopus"
2430 libopus_encoder_select="audio_frame_queue"
2431 libquvi_demuxer_deps="libquvi"
2432 libschroedinger_decoder_deps="libschroedinger"
2433 libschroedinger_encoder_deps="libschroedinger"
2434 libshine_encoder_deps="libshine"
2435 libshine_encoder_select="audio_frame_queue"
2436 libspeex_decoder_deps="libspeex"
2437 libspeex_encoder_deps="libspeex"
2438 libspeex_encoder_select="audio_frame_queue"
2439 libstagefright_h264_decoder_deps="libstagefright_h264"
2440 libtheora_encoder_deps="libtheora"
2441 libtwolame_encoder_deps="libtwolame"
2442 libvo_aacenc_encoder_deps="libvo_aacenc"
2443 libvo_aacenc_encoder_select="audio_frame_queue"
2444 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2445 libvorbis_decoder_deps="libvorbis"
2446 libvorbis_encoder_deps="libvorbis"
2447 libvorbis_encoder_select="audio_frame_queue"
2448 libvpx_vp8_decoder_deps="libvpx"
2449 libvpx_vp8_encoder_deps="libvpx"
2450 libvpx_vp9_decoder_deps="libvpx"
2451 libvpx_vp9_encoder_deps="libvpx"
2452 libwavpack_encoder_deps="libwavpack"
2453 libwebp_encoder_deps="libwebp"
2454 libwebp_anim_encoder_deps="libwebp"
2455 libx264_encoder_deps="libx264"
2456 libx264rgb_encoder_deps="libx264"
2457 libx264rgb_encoder_select="libx264_encoder"
2458 libx265_encoder_deps="libx265"
2459 libxavs_encoder_deps="libxavs"
2460 libxvid_encoder_deps="libxvid"
2461 libutvideo_decoder_deps="libutvideo"
2462 libutvideo_encoder_deps="libutvideo"
2463 libzvbi_teletext_decoder_deps="libzvbi"
2464 nvenc_encoder_deps="nvenc"
2465 nvenc_h265_encoder_deps="nvenc"
2466
2467 # demuxers / muxers
2468 ac3_demuxer_select="ac3_parser"
2469 asf_demuxer_select="riffdec"
2470 asf_muxer_select="riffenc"
2471 asf_stream_muxer_select="asf_muxer"
2472 avi_demuxer_select="riffdec exif"
2473 avi_muxer_select="riffenc"
2474 avisynth_demuxer_deps="avisynth"
2475 avisynth_demuxer_select="riffdec"
2476 caf_demuxer_select="riffdec"
2477 dash_muxer_select="mp4_muxer"
2478 dirac_demuxer_select="dirac_parser"
2479 dts_demuxer_select="dca_parser"
2480 dtshd_demuxer_select="dca_parser"
2481 dv_demuxer_select="dvprofile"
2482 dv_muxer_select="dvprofile"
2483 dxa_demuxer_select="riffdec"
2484 eac3_demuxer_select="ac3_parser"
2485 f4v_muxer_select="mov_muxer"
2486 flac_demuxer_select="flac_parser"
2487 hds_muxer_select="flv_muxer"
2488 hls_muxer_select="mpegts_muxer"
2489 image2_alias_pix_demuxer_select="image2_demuxer"
2490 image2_brender_pix_demuxer_select="image2_demuxer"
2491 ipod_muxer_select="mov_muxer"
2492 ismv_muxer_select="mov_muxer"
2493 libnut_demuxer_deps="libnut"
2494 libnut_muxer_deps="libnut"
2495 matroska_audio_muxer_select="matroska_muxer"
2496 matroska_demuxer_select="riffdec"
2497 matroska_demuxer_suggest="bzlib lzo zlib"
2498 matroska_muxer_select="riffenc"
2499 mmf_muxer_select="riffenc"
2500 mov_demuxer_select="riffdec"
2501 mov_demuxer_suggest="zlib"
2502 mov_muxer_select="riffenc rtpenc_chain"
2503 mp3_demuxer_select="mpegaudio_parser"
2504 mp4_muxer_select="mov_muxer"
2505 mpegts_muxer_select="adts_muxer latm_muxer"
2506 mpegtsraw_demuxer_select="mpegts_demuxer"
2507 mxf_d10_muxer_select="mxf_muxer"
2508 mxf_opatom_muxer_select="mxf_muxer"
2509 nut_muxer_select="riffenc"
2510 nuv_demuxer_select="riffdec"
2511 oga_muxer_select="ogg_muxer"
2512 ogg_demuxer_select="golomb"
2513 opus_muxer_select="ogg_muxer"
2514 psp_muxer_select="mov_muxer"
2515 rtp_demuxer_select="sdp_demuxer"
2516 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2517 rtsp_demuxer_select="http_protocol rtpdec"
2518 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2519 sap_demuxer_select="sdp_demuxer"
2520 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2521 sdp_demuxer_select="rtpdec"
2522 smoothstreaming_muxer_select="ismv_muxer"
2523 spdif_muxer_select="aac_parser"
2524 spx_muxer_select="ogg_muxer"
2525 tak_demuxer_select="tak_parser"
2526 tg2_muxer_select="mov_muxer"
2527 tgp_muxer_select="mov_muxer"
2528 vobsub_demuxer_select="mpegps_demuxer"
2529 w64_demuxer_select="wav_demuxer"
2530 w64_muxer_select="wav_muxer"
2531 wav_demuxer_select="riffdec"
2532 wav_muxer_select="riffenc"
2533 webm_muxer_select="riffenc"
2534 wtv_demuxer_select="riffdec"
2535 wtv_muxer_select="riffenc"
2536 xmv_demuxer_select="riffdec"
2537 xwma_demuxer_select="riffdec"
2538
2539 # indevs / outdevs
2540 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2541 alsa_outdev_deps="alsa_asoundlib_h"
2542 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2543 avfoundation_indev_select="avfoundation"
2544 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2545 caca_outdev_deps="libcaca"
2546 decklink_outdev_deps="decklink pthreads"
2547 decklink_outdev_extralibs="-lstdc++"
2548 decklink_indev_deps="decklink pthreads"
2549 decklink_indev_extralibs="-lstdc++"
2550 dshow_indev_deps="IBaseFilter"
2551 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2552 dv1394_indev_deps="dv1394"
2553 dv1394_indev_select="dv_demuxer"
2554 fbdev_indev_deps="linux_fb_h"
2555 fbdev_outdev_deps="linux_fb_h"
2556 gdigrab_indev_deps="CreateDIBSection"
2557 gdigrab_indev_extralibs="-lgdi32"
2558 gdigrab_indev_select="bmp_decoder"
2559 iec61883_indev_deps="libiec61883"
2560 jack_indev_deps="jack_jack_h sem_timedwait"
2561 lavfi_indev_deps="avfilter"
2562 libcdio_indev_deps="libcdio"
2563 libdc1394_indev_deps="libdc1394"
2564 libv4l2_indev_deps="libv4l2"
2565 openal_indev_deps="openal"
2566 opengl_outdev_deps="opengl"
2567 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2568 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2569 pulse_indev_deps="libpulse"
2570 pulse_outdev_deps="libpulse"
2571 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2572 qtkit_indev_select="qtkit"
2573 sdl_outdev_deps="sdl"
2574 sndio_indev_deps="sndio_h"
2575 sndio_outdev_deps="sndio_h"
2576 v4l_indev_deps="linux_videodev_h"
2577 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2578 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2579 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2580 vfwcap_indev_extralibs="-lavicap32"
2581 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2582 xv_outdev_extralibs="-lXv -lX11 -lXext"
2583 x11grab_indev_deps="x11grab"
2584 x11grab_xcb_indev_deps="libxcb"
2585
2586 # protocols
2587 bluray_protocol_deps="libbluray"
2588 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2589 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2590 ffrtmpcrypt_protocol_select="tcp_protocol"
2591 ffrtmphttp_protocol_deps="!librtmp_protocol"
2592 ffrtmphttp_protocol_select="http_protocol"
2593 ftp_protocol_select="tcp_protocol"
2594 gopher_protocol_select="network"
2595 http_protocol_select="tcp_protocol"
2596 httpproxy_protocol_select="tcp_protocol"
2597 https_protocol_select="tls_protocol"
2598 icecast_protocol_select="http_protocol"
2599 librtmp_protocol_deps="librtmp"
2600 librtmpe_protocol_deps="librtmp"
2601 librtmps_protocol_deps="librtmp"
2602 librtmpt_protocol_deps="librtmp"
2603 librtmpte_protocol_deps="librtmp"
2604 libsmbclient_protocol_deps="libsmbclient gplv3"
2605 libssh_protocol_deps="libssh"
2606 mmsh_protocol_select="http_protocol"
2607 mmst_protocol_select="network"
2608 rtmp_protocol_deps="!librtmp_protocol"
2609 rtmp_protocol_select="tcp_protocol"
2610 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2611 rtmps_protocol_deps="!librtmp_protocol"
2612 rtmps_protocol_select="tls_protocol"
2613 rtmpt_protocol_select="ffrtmphttp_protocol"
2614 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2615 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2616 rtp_protocol_select="udp_protocol"
2617 sctp_protocol_deps="struct_sctp_event_subscribe"
2618 sctp_protocol_select="network"
2619 srtp_protocol_select="rtp_protocol"
2620 tcp_protocol_select="network"
2621 tls_protocol_deps_any="openssl gnutls"
2622 tls_protocol_select="tcp_protocol"
2623 udp_protocol_select="network"
2624 udplite_protocol_select="network"
2625 unix_protocol_deps="sys_un_h"
2626 unix_protocol_select="network"
2627
2628 # filters
2629 amovie_filter_deps="avcodec avformat"
2630 aresample_filter_deps="swresample"
2631 ass_filter_deps="libass"
2632 asyncts_filter_deps="avresample"
2633 atempo_filter_deps="avcodec"
2634 atempo_filter_select="rdft"
2635 azmq_filter_deps="libzmq"
2636 blackframe_filter_deps="gpl"
2637 boxblur_filter_deps="gpl"
2638 bs2b_filter_deps="libbs2b"
2639 colormatrix_filter_deps="gpl"
2640 cover_rect_filter_deps="avcodec avformat gpl"
2641 cropdetect_filter_deps="gpl"
2642 delogo_filter_deps="gpl"
2643 deshake_filter_select="pixelutils"
2644 drawtext_filter_deps="libfreetype"
2645 ebur128_filter_deps="gpl"
2646 eq_filter_deps="gpl"
2647 fftfilt_filter_deps="avcodec"
2648 fftfilt_filter_select="rdft"
2649 flite_filter_deps="libflite"
2650 find_rect_filter_deps="avcodec avformat gpl"
2651 frei0r_filter_deps="frei0r dlopen"
2652 frei0r_src_filter_deps="frei0r dlopen"
2653 fspp_filter_deps="gpl"
2654 geq_filter_deps="gpl"
2655 histeq_filter_deps="gpl"
2656 hqdn3d_filter_deps="gpl"
2657 interlace_filter_deps="gpl"
2658 kerndeint_filter_deps="gpl"
2659 ladspa_filter_deps="ladspa dlopen"
2660 mcdeint_filter_deps="avcodec gpl"
2661 movie_filter_deps="avcodec avformat"
2662 mpdecimate_filter_deps="gpl"
2663 mpdecimate_filter_select="pixelutils"
2664 mptestsrc_filter_deps="gpl"
2665 negate_filter_deps="lut_filter"
2666 perspective_filter_deps="gpl"
2667 pp7_filter_deps="gpl"
2668 ocv_filter_deps="libopencv"
2669 owdenoise_filter_deps="gpl"
2670 pan_filter_deps="swresample"
2671 phase_filter_deps="gpl"
2672 pp_filter_deps="gpl postproc"
2673 pullup_filter_deps="gpl"
2674 removelogo_filter_deps="avcodec avformat swscale"
2675 repeatfields_filter_deps="gpl"
2676 resample_filter_deps="avresample"
2677 sab_filter_deps="gpl swscale"
2678 scale_filter_deps="swscale"
2679 select_filter_select="pixelutils"
2680 smartblur_filter_deps="gpl swscale"
2681 showspectrum_filter_deps="avcodec"
2682 showspectrum_filter_select="rdft"
2683 spp_filter_deps="gpl avcodec"
2684 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2685 stereo3d_filter_deps="gpl"
2686 subtitles_filter_deps="avformat avcodec libass"
2687 super2xsai_filter_deps="gpl"
2688 tinterlace_filter_deps="gpl"
2689 vidstabdetect_filter_deps="libvidstab"
2690 vidstabtransform_filter_deps="libvidstab"
2691 pixfmts_super2xsai_test_deps="super2xsai_filter"
2692 tinterlace_merge_test_deps="tinterlace_filter"
2693 tinterlace_pad_test_deps="tinterlace_filter"
2694 uspp_filter_deps="gpl avcodec"
2695 zmq_filter_deps="libzmq"
2696 zoompan_filter_deps="swscale"
2697
2698 # examples
2699 avio_reading="avformat avcodec avutil"
2700 avio_list_dir="avformat avutil"
2701 avcodec_example_deps="avcodec avutil"
2702 decoding_encoding_example_deps="avcodec avformat avutil"
2703 demuxing_decoding_example_deps="avcodec avformat avutil"
2704 extract_mvs_example_deps="avcodec avformat avutil"
2705 filter_audio_example_deps="avfilter avutil"
2706 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2707 filtering_video_example_deps="avfilter avcodec avformat avutil"
2708 metadata_example_deps="avformat avutil"
2709 muxing_example_deps="avcodec avformat avutil swscale"
2710 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2711 remuxing_example_deps="avcodec avformat avutil"
2712 resampling_audio_example_deps="avutil swresample"
2713 scaling_video_example_deps="avutil swscale"
2714 transcode_aac_example_deps="avcodec avformat swresample"
2715 transcoding_example_deps="avfilter avcodec avformat avutil"
2716
2717 # libraries, in linking order
2718 avcodec_deps="avutil"
2719 avdevice_deps="avformat avcodec avutil"
2720 avfilter_deps="avutil"
2721 avformat_deps="avcodec avutil"
2722 avresample_deps="avutil"
2723 postproc_deps="avutil gpl"
2724 swresample_deps="avutil"
2725 swscale_deps="avutil"
2726
2727 # programs
2728 ffmpeg_deps="avcodec avfilter avformat swresample"
2729 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2730                null_filter
2731                setpts_filter trim_filter"
2732 ffplay_deps="avcodec avformat swscale swresample sdl"
2733 ffplay_libs='$sdl_libs'
2734 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2735 ffprobe_deps="avcodec avformat"
2736 ffserver_deps="avformat fork sarestart"
2737 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2738
2739 # documentation
2740 podpages_deps="perl"
2741 manpages_deps="perl pod2man"
2742 htmlpages_deps="perl"
2743 htmlpages_deps_any="makeinfo_html texi2html"
2744 txtpages_deps="perl makeinfo"
2745 doc_deps_any="manpages htmlpages podpages txtpages"
2746
2747 # default parameters
2748
2749 logfile="config.log"
2750
2751 # installation paths
2752 prefix_default="/usr/local"
2753 bindir_default='${prefix}/bin'
2754 datadir_default='${prefix}/share/ffmpeg'
2755 docdir_default='${prefix}/share/doc/ffmpeg'
2756 incdir_default='${prefix}/include'
2757 libdir_default='${prefix}/lib'
2758 mandir_default='${prefix}/share/man'
2759
2760 # toolchain
2761 ar_default="ar"
2762 cc_default="gcc"
2763 cxx_default="g++"
2764 host_cc_default="gcc"
2765 cp_f="cp -f"
2766 doxygen_default="doxygen"
2767 install="install"
2768 ln_s="ln -s -f"
2769 nm_default="nm -g"
2770 objformat="elf"
2771 pkg_config_default=pkg-config
2772 if ranlib 2>&1 | grep -q "\-D "; then
2773     ranlib_default="ranlib -D"
2774 else
2775     ranlib_default="ranlib"
2776 fi
2777 strip_default="strip"
2778 yasmexe_default="yasm"
2779 windres_default="windres"
2780
2781 # OS
2782 target_os_default=$(tolower $(uname -s))
2783 host_os=$target_os_default
2784
2785 # machine
2786 if test "$target_os_default" = aix; then
2787     arch_default=$(uname -p)
2788     strip_default="strip -X32_64"
2789 else
2790     arch_default=$(uname -m)
2791 fi
2792 cpu="generic"
2793 intrinsics="none"
2794
2795 # configurable options
2796 enable $PROGRAM_LIST
2797 enable $DOCUMENT_LIST
2798 enable $EXAMPLE_LIST
2799 enable $(filter_out avresample $LIBRARY_LIST)
2800 enable stripping
2801
2802 enable asm
2803 enable debug
2804 enable doc
2805 enable faan faandct faanidct
2806 enable optimizations
2807 enable runtime_cpudetect
2808 enable safe_bitstream_reader
2809 enable static
2810 enable swscale_alpha
2811 enable valgrind_backtrace
2812
2813 sws_max_filter_size_default=256
2814 set_default sws_max_filter_size
2815
2816 # Enable hwaccels by default.
2817 enable dxva2 vaapi vda vdpau xvmc
2818 enable xlib
2819
2820 # build settings
2821 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2822 LIBPREF="lib"
2823 LIBSUF=".a"
2824 FULLNAME='$(NAME)$(BUILDSUF)'
2825 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2826 SLIBPREF="lib"
2827 SLIBSUF=".so"
2828 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2829 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2830 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2831 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2832 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2833 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2834
2835 asflags_filter=echo
2836 cflags_filter=echo
2837 ldflags_filter=echo
2838
2839 AS_C='-c'
2840 AS_O='-o $@'
2841 CC_C='-c'
2842 CC_E='-E -o $@'
2843 CC_O='-o $@'
2844 CXX_C='-c'
2845 CXX_O='-o $@'
2846 LD_O='-o $@'
2847 LD_LIB='-l%'
2848 LD_PATH='-L'
2849 HOSTCC_C='-c'
2850 HOSTCC_E='-E -o $@'
2851 HOSTCC_O='-o $@'
2852 HOSTLD_O='-o $@'
2853
2854 host_libs='-lm'
2855 host_cflags_filter=echo
2856 host_ldflags_filter=echo
2857
2858 target_path='$(CURDIR)'
2859
2860 # since the object filename is not given with the -MM flag, the compiler
2861 # is only able to print the basename, and we must add the path ourselves
2862 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2863 DEPFLAGS='-MM'
2864
2865 # find source path
2866 if test -f configure; then
2867     source_path=.
2868 else
2869     source_path=$(cd $(dirname "$0"); pwd)
2870     echo "$source_path" | grep -q '[[:blank:]]' &&
2871         die "Out of tree builds are impossible with whitespace in source path."
2872     test -e "$source_path/config.h" &&
2873         die "Out of tree builds are impossible with config.h in source dir."
2874 fi
2875
2876 for v in "$@"; do
2877     r=${v#*=}
2878     l=${v%"$r"}
2879     r=$(sh_quote "$r")
2880     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2881 done
2882
2883 find_things(){
2884     thing=$1
2885     pattern=$2
2886     file=$source_path/$3
2887     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2888 }
2889
2890 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2891 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2892 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2893 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2894 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2895 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2896 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2897 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2898 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2899 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2900 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2901
2902 ALL_COMPONENTS="
2903     $BSF_LIST
2904     $DECODER_LIST
2905     $DEMUXER_LIST
2906     $ENCODER_LIST
2907     $FILTER_LIST
2908     $HWACCEL_LIST
2909     $INDEV_LIST
2910     $MUXER_LIST
2911     $OUTDEV_LIST
2912     $PARSER_LIST
2913     $PROTOCOL_LIST
2914 "
2915
2916 for n in $COMPONENT_LIST; do
2917     v=$(toupper ${n%s})_LIST
2918     eval enable \$$v
2919     eval ${n}_if_any="\$$v"
2920 done
2921
2922 enable $ARCH_EXT_LIST
2923
2924 die_unknown(){
2925     echo "Unknown option \"$1\"."
2926     echo "See $0 --help for available options."
2927     exit 1
2928 }
2929
2930 print_3_columns() {
2931     cat | tr ' ' '\n' | sort | pr -r -3 -t
2932 }
2933
2934 show_list() {
2935     suffix=_$1
2936     shift
2937     echo $* | sed s/$suffix//g | print_3_columns
2938     exit 0
2939 }
2940
2941 rand_list(){
2942     IFS=', '
2943     set -- $*
2944     unset IFS
2945     for thing; do
2946         comp=${thing%:*}
2947         prob=${thing#$comp}
2948         prob=${prob#:}
2949         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2950         echo "prob ${prob:-0.5}"
2951         printf '%s\n' $comp
2952     done
2953 }
2954
2955 do_random(){
2956     action=$1
2957     shift
2958     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2959     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2960 }
2961
2962 for opt do
2963     optval="${opt#*=}"
2964     case "$opt" in
2965         --extra-ldflags=*)
2966             add_ldflags $optval
2967         ;;
2968         --extra-ldexeflags=*)
2969             add_ldexeflags $optval
2970         ;;
2971         --extra-libs=*)
2972             add_extralibs $optval
2973         ;;
2974         --disable-devices)
2975             disable $INDEV_LIST $OUTDEV_LIST
2976         ;;
2977         --enable-debug=*)
2978             debuglevel="$optval"
2979         ;;
2980         --disable-programs)
2981             disable $PROGRAM_LIST
2982         ;;
2983         --disable-everything)
2984             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2985         ;;
2986         --disable-all)
2987             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2988             disable $LIBRARY_LIST $PROGRAM_LIST doc
2989         ;;
2990         --enable-random|--disable-random)
2991             action=${opt%%-random}
2992             do_random ${action#--} $COMPONENT_LIST
2993         ;;
2994         --enable-random=*|--disable-random=*)
2995             action=${opt%%-random=*}
2996             do_random ${action#--} $optval
2997         ;;
2998         --enable-*=*|--disable-*=*)
2999             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3000             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3001             eval list=\$$(toupper $thing)_LIST
3002             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3003             list=$(filter "$name" $list)
3004             [ "$list" = "" ] && warn "Option $opt did not match anything"
3005             $action $list
3006         ;;
3007         --enable-?*|--disable-?*)
3008             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3009             if is_in $option $COMPONENT_LIST; then
3010                 test $action = disable && action=unset
3011                 eval $action \$$(toupper ${option%s})_LIST
3012             elif is_in $option $CMDLINE_SELECT; then
3013                 $action $option
3014             else
3015                 die_unknown $opt
3016             fi
3017         ;;
3018         --list-*)
3019             NAME="${opt#--list-}"
3020             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3021             NAME=${NAME%s}
3022             eval show_list $NAME \$$(toupper $NAME)_LIST
3023         ;;
3024         --help|-h) show_help
3025         ;;
3026         --fatal-warnings) enable fatal_warnings
3027         ;;
3028         *)
3029             optname="${opt%%=*}"
3030             optname="${optname#--}"
3031             optname=$(echo "$optname" | sed 's/-/_/g')
3032             if is_in $optname $CMDLINE_SET; then
3033                 eval $optname='$optval'
3034             elif is_in $optname $CMDLINE_APPEND; then
3035                 append $optname "$optval"
3036             else
3037                 die_unknown $opt
3038             fi
3039         ;;
3040     esac
3041 done
3042
3043 disabled logging && logfile=/dev/null
3044
3045 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3046 set >> $logfile
3047
3048 test -n "$valgrind" && toolchain="valgrind-memcheck"
3049
3050 case "$toolchain" in
3051     clang-asan)
3052         cc_default="clang"
3053         add_cflags  -fsanitize=address
3054         add_ldflags -fsanitize=address
3055     ;;
3056     clang-tsan)
3057         cc_default="clang"
3058         add_cflags  -fsanitize=thread -pie
3059         add_ldflags -fsanitize=thread -pie
3060     ;;
3061     clang-usan)
3062         cc_default="clang"
3063         add_cflags  -fsanitize=undefined
3064         add_ldflags -fsanitize=undefined
3065     ;;
3066     gcc-asan)
3067         cc_default="gcc"
3068         add_cflags  -fsanitize=address
3069         add_ldflags -fsanitize=address
3070     ;;
3071     gcc-tsan)
3072         cc_default="gcc"
3073         add_cflags  -fsanitize=thread -pie -fPIC
3074         add_ldflags -fsanitize=thread -pie -fPIC
3075     ;;
3076     gcc-usan)
3077         cc_default="gcc"
3078         add_cflags  -fsanitize=undefined
3079         add_ldflags -fsanitize=undefined
3080     ;;
3081     valgrind-massif)
3082         target_exec_default=${valgrind:-"valgrind"}
3083         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"
3084     ;;
3085     valgrind-memcheck)
3086         target_exec_default=${valgrind:-"valgrind"}
3087         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3088     ;;
3089     msvc)
3090         # Check whether the current MSVC version needs the C99 converter.
3091         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3092         # support enough of C99 to build ffmpeg. Default to the new
3093         # behaviour if the regexp was unable to match anything, since this
3094         # successfully parses the version number of existing supported
3095         # versions that require the converter (MSVC 2010 and 2012).
3096         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3097         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3098             cc_default="cl"
3099         else
3100             cc_default="c99wrap cl"
3101         fi
3102         ld_default="link"
3103         nm_default="dumpbin -symbols"
3104         ar_default="lib"
3105         target_os_default="win32"
3106         # Use a relative path for TMPDIR. This makes sure all the
3107         # ffconf temp files are written with a relative path, avoiding
3108         # issues with msys/win32 path conversion for MSVC parameters
3109         # such as -Fo<file> or -out:<file>.
3110         TMPDIR=.
3111     ;;
3112     icl)
3113         cc_default="icl"
3114         ld_default="xilink"
3115         nm_default="dumpbin -symbols"
3116         ar_default="xilib"
3117         target_os_default="win32"
3118         TMPDIR=.
3119     ;;
3120     gcov)
3121         add_cflags  -fprofile-arcs -ftest-coverage
3122         add_ldflags -fprofile-arcs -ftest-coverage
3123     ;;
3124     hardened)
3125         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3126         add_cflags   -fno-strict-overflow -fstack-protector-all
3127         add_ldflags  -Wl,-z,relro -Wl,-z,now
3128     ;;
3129     ?*)
3130         die "Unknown toolchain $toolchain"
3131     ;;
3132 esac
3133
3134 test -n "$cross_prefix" && enable cross_compile
3135
3136 if enabled cross_compile; then
3137     test -n "$arch" && test -n "$target_os" ||
3138         die "Must specify target arch and OS when cross-compiling"
3139 fi
3140
3141 ar_default="${cross_prefix}${ar_default}"
3142 cc_default="${cross_prefix}${cc_default}"
3143 cxx_default="${cross_prefix}${cxx_default}"
3144 nm_default="${cross_prefix}${nm_default}"
3145 pkg_config_default="${cross_prefix}${pkg_config_default}"
3146 ranlib_default="${cross_prefix}${ranlib_default}"
3147 strip_default="${cross_prefix}${strip_default}"
3148 windres_default="${cross_prefix}${windres_default}"
3149
3150 sysinclude_default="${sysroot}/usr/include"
3151
3152 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3153     target_exec target_os yasmexe
3154 enabled cross_compile || host_cc_default=$cc
3155 set_default host_cc
3156
3157 pkg_config_fail_message=""
3158 if ! $pkg_config --version >/dev/null 2>&1; then
3159     warn "$pkg_config not found, library detection may fail."
3160     pkg_config=false
3161 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3162     pkg_config_fail_message="
3163 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3164 fi
3165
3166 if test $doxygen != $doxygen_default && \
3167   ! $doxygen --version >/dev/null 2>&1; then
3168     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3169 fi
3170
3171 exesuf() {
3172     case $1 in
3173         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3174     esac
3175 }
3176
3177 EXESUF=$(exesuf $target_os)
3178 HOSTEXESUF=$(exesuf $host_os)
3179
3180 # set temporary file name
3181 : ${TMPDIR:=$TEMPDIR}
3182 : ${TMPDIR:=$TMP}
3183 : ${TMPDIR:=/tmp}
3184
3185 if [ -n "$tempprefix" ] ; then
3186     mktemp(){
3187         echo $tempprefix.${HOSTNAME}.${UID}
3188     }
3189 elif ! check_cmd mktemp -u XXXXXX; then
3190     # simple replacement for missing mktemp
3191     # NOT SAFE FOR GENERAL USE
3192     mktemp(){
3193         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3194     }
3195 fi
3196
3197 tmpfile(){
3198     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3199         (set -C; exec > $tmp) 2>/dev/null ||
3200         die "Unable to create temporary file in $TMPDIR."
3201     append TMPFILES $tmp
3202     eval $1=$tmp
3203 }
3204
3205 trap 'rm -f -- $TMPFILES' EXIT
3206
3207 tmpfile TMPASM .asm
3208 tmpfile TMPC   .c
3209 tmpfile TMPCPP .cpp
3210 tmpfile TMPE   $EXESUF
3211 tmpfile TMPH   .h
3212 tmpfile TMPM   .m
3213 tmpfile TMPO   .o
3214 tmpfile TMPS   .S
3215 tmpfile TMPSH  .sh
3216 tmpfile TMPV   .ver
3217
3218 unset -f mktemp
3219
3220 chmod +x $TMPE
3221
3222 # make sure we can execute files in $TMPDIR
3223 cat > $TMPSH 2>> $logfile <<EOF
3224 #! /bin/sh
3225 EOF
3226 chmod +x $TMPSH >> $logfile 2>&1
3227 if ! $TMPSH >> $logfile 2>&1; then
3228     cat <<EOF
3229 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3230 variable to another directory and make sure that it is not mounted noexec.
3231 EOF
3232     die "Sanity test failed."
3233 fi
3234
3235 armasm_flags(){
3236     for flag; do
3237         case $flag in
3238             # Filter out MSVC cl.exe options from cflags that shouldn't
3239             # be passed to gas-preprocessor
3240             -M[TD]*)                                            ;;
3241             *)                  echo $flag                      ;;
3242         esac
3243    done
3244 }
3245
3246 ccc_flags(){
3247     for flag; do
3248         case $flag in
3249             -std=c99)           echo -c99                       ;;
3250             -mcpu=*)            echo -arch ${flag#*=}           ;;
3251             -mieee)             echo -ieee                      ;;
3252             -O*|-fast)          echo $flag                      ;;
3253             -fno-math-errno)    echo -assume nomath_errno       ;;
3254             -g)                 echo -g3                        ;;
3255             -Wall)              echo -msg_enable level2         ;;
3256             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3257             -Wl,*)              echo $flag                      ;;
3258             -f*|-W*)                                            ;;
3259             *)                  echo $flag                      ;;
3260         esac
3261    done
3262 }
3263
3264 cparser_flags(){
3265     for flag; do
3266         case $flag in
3267             -Wno-switch)             echo -Wno-switch-enum ;;
3268             -Wno-format-zero-length) ;;
3269             -Wdisabled-optimization) ;;
3270             -Wno-pointer-sign)       echo -Wno-other ;;
3271             *)                       echo $flag ;;
3272         esac
3273     done
3274 }
3275
3276 msvc_common_flags(){
3277     for flag; do
3278         case $flag in
3279             # In addition to specifying certain flags under the compiler
3280             # specific filters, they must be specified here as well or else the
3281             # generic catch all at the bottom will print the original flag.
3282             -Wall)                ;;
3283             -std=c99)             ;;
3284             # Common flags
3285             -fomit-frame-pointer) ;;
3286             -g)                   echo -Z7 ;;
3287             -fno-math-errno)      ;;
3288             -fno-common)          ;;
3289             -fno-signed-zeros)    ;;
3290             -fPIC)                ;;
3291             -mthumb)              ;;
3292             -march=*)             ;;
3293             -lz)                  echo zlib.lib ;;
3294             -lavifil32)           echo vfw32.lib ;;
3295             -lavicap32)           echo vfw32.lib user32.lib ;;
3296             -l*)                  echo ${flag#-l}.lib ;;
3297             -L*)                  echo -libpath:${flag#-L} ;;
3298             *)                    echo $flag ;;
3299         esac
3300     done
3301 }
3302
3303 msvc_flags(){
3304     msvc_common_flags "$@"
3305     for flag; do
3306         case $flag in
3307             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3308                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3309                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3310                                        -wd4307 \
3311                                        -wd4273 -wd4554 -wd4701 ;;
3312         esac
3313     done
3314 }
3315
3316 icl_flags(){
3317     msvc_common_flags "$@"
3318     for flag; do
3319         case $flag in
3320             # Despite what Intel's documentation says -Wall, which is supported
3321             # on Windows, does enable remarks so disable them here.
3322             -Wall)                echo $flag -Qdiag-disable:remark ;;
3323             -std=c99)             echo -Qstd=c99 ;;
3324             -flto)                echo -ipo ;;
3325         esac
3326     done
3327 }
3328
3329 icc_flags(){
3330     for flag; do
3331         case $flag in
3332             -flto)                echo -ipo ;;
3333             *)                    echo $flag ;;
3334         esac
3335     done
3336 }
3337
3338 pgi_flags(){
3339     for flag; do
3340         case $flag in
3341             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3342             -fomit-frame-pointer) echo -Mnoframe ;;
3343             -g)                   echo -gopt ;;
3344             *)                    echo $flag ;;
3345         esac
3346     done
3347 }
3348
3349 suncc_flags(){
3350     for flag; do
3351         case $flag in
3352             -march=*|-mcpu=*)
3353                 case "${flag#*=}" in
3354                     native)                   echo -xtarget=native       ;;
3355                     v9|niagara)               echo -xarch=sparc          ;;
3356                     ultrasparc)               echo -xarch=sparcvis       ;;
3357                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3358                     i586|pentium)             echo -xchip=pentium        ;;
3359                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3360                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3361                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3362                     pentium4*)          echo -xtarget=pentium4           ;;
3363                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3364                     *-sse3)             echo -xarch=sse3                 ;;
3365                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3366                     bonnell)                   echo -xarch=ssse3         ;;
3367                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3368                     westmere)                  echo -xtarget=westmere    ;;
3369                     silvermont)                echo -xarch=sse4_2        ;;
3370                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3371                     core-avx*|ivybridge|haswell|broadwell)
3372                                                echo -xarch=avx           ;;
3373                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3374                     btver1)                    echo -xarch=amdsse4a      ;;
3375                     btver2|bdver*)             echo -xarch=avx           ;;
3376                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3377                     k8|opteron|athlon64|athlon-fx)
3378                                                echo -xarch=sse2a         ;;
3379                     athlon*)                   echo -xarch=pentium_proa  ;;
3380                 esac
3381                 ;;
3382             -std=c99)             echo -xc99              ;;
3383             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3384             -fPIC)                echo -KPIC -xcode=pic32 ;;
3385             -W*,*)                echo $flag              ;;
3386             -f*-*|-W*|-mimpure-text)                      ;;
3387             -shared)              echo -G                 ;;
3388             *)                    echo $flag              ;;
3389         esac
3390     done
3391 }
3392
3393 tms470_flags(){
3394     for flag; do
3395         case $flag in
3396             -march=*|-mcpu=*)
3397                 case "${flag#*=}" in
3398                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3399                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3400                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3401                     armv6*|arm11*)          echo -mv=6   ;;
3402                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3403                                             echo -mv=5e  ;;
3404                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3405                 esac
3406                 ;;
3407             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3408             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3409             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3410             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3411             -msoft-float)   echo --float_support=vfplib       ;;
3412             -O[0-3]|-mf=*)  echo $flag                        ;;
3413             -g)             echo -g -mn                       ;;
3414             -pds=*)         echo $flag                        ;;
3415             -D*|-I*)        echo $flag                        ;;
3416             --gcc|--abi=*)  echo $flag                        ;;
3417             -me)            echo $flag                        ;;
3418         esac
3419     done
3420 }
3421
3422 probe_cc(){
3423     pfx=$1
3424     _cc=$2
3425
3426     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3427     unset _ld_o _ldflags _ld_lib _ld_path
3428     unset _depflags _DEPCMD _DEPFLAGS
3429     _flags_filter=echo
3430
3431     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3432         true # no-op to avoid reading stdin in following checks
3433     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3434         _type=llvm_gcc
3435         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3436         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3438         _cflags_speed='-O3'
3439         _cflags_size='-Os'
3440     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3441         _type=gcc
3442         gcc_version=$($_cc --version | head -n1)
3443         gcc_basever=$($_cc -dumpversion)
3444         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3445         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3446         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3447         if ! $_cc -dumpversion | grep -q '^2\.'; then
3448             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3449         fi
3450         _cflags_speed='-O3'
3451         _cflags_size='-Os'
3452     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3453         _type=icc
3454         _ident=$($_cc --version | head -n1)
3455         _depflags='-MMD'
3456         _cflags_speed='-O3'
3457         _cflags_size='-Os'
3458         _cflags_noopt='-O1'
3459         _flags_filter=icc_flags
3460     elif $_cc -v 2>&1 | grep -q xlc; then
3461         _type=xlc
3462         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3463         _cflags_speed='-O5'
3464         _cflags_size='-O5 -qcompact'
3465     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3466         _type=ccc
3467         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3468         _DEPFLAGS='-M'
3469         _cflags_speed='-fast'
3470         _cflags_size='-O1'
3471         _flags_filter=ccc_flags
3472     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3473         test -d "$sysroot" || die "No valid sysroot specified."
3474         _type=armcc
3475         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3476         armcc_conf="$PWD/armcc.conf"
3477         $_cc --arm_linux_configure                 \
3478              --arm_linux_config_file="$armcc_conf" \
3479              --configure_sysroot="$sysroot"        \
3480              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3481              die "Error creating armcc configuration file."
3482         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3483         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3484         as_default="${cross_prefix}gcc"
3485         _depflags='-MMD'
3486         _cflags_speed='-O3'
3487         _cflags_size='-Os'
3488     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3489         _type=tms470
3490         _ident=$($_cc -version | head -n1 | tr -s ' ')
3491         _flags='--gcc --abi=eabi -me'
3492         _cc_e='-ppl -fe=$@'
3493         _cc_o='-fe=$@'
3494         _depflags='-ppa -ppd=$(@:.o=.d)'
3495         _cflags_speed='-O3 -mf=5'
3496         _cflags_size='-O3 -mf=2'
3497         _flags_filter=tms470_flags
3498     elif $_cc -v 2>&1 | grep -q clang; then
3499         _type=clang
3500         _ident=$($_cc --version | head -n1)
3501         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3502         _cflags_speed='-O3'
3503         _cflags_size='-Os'
3504     elif $_cc -V 2>&1 | grep -q Sun; then
3505         _type=suncc
3506         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3507         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3508         _DEPFLAGS='-xM1 -xc99'
3509         _ldflags='-std=c99'
3510         _cflags_speed='-O5'
3511         _cflags_size='-O5 -xspace'
3512         _flags_filter=suncc_flags
3513     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3514         _type=pathscale
3515         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3516         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3517         _cflags_speed='-O2'
3518         _cflags_size='-Os'
3519         _flags_filter='filter_out -Wdisabled-optimization'
3520     elif $_cc -v 2>&1 | grep -q Open64; then
3521         _type=open64
3522         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3523         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3524         _cflags_speed='-O2'
3525         _cflags_size='-Os'
3526         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3527     elif $_cc -V 2>&1 | grep -q Portland; then
3528         _type=pgi
3529         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3530         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3531         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3532         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3533         _cflags_noopt="-O"
3534         _flags_filter=pgi_flags
3535     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3536         _type=armasm
3537         _ident=$($_cc | head -n1)
3538         # 4509: "This form of conditional instruction is deprecated"
3539         _flags="-nologo -ignore 4509"
3540         _flags_filter=armasm_flags
3541     elif $_cc 2>&1 | grep -q Intel; then
3542         _type=icl
3543         _ident=$($_cc 2>&1 | head -n1)
3544         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3545         # Not only is O3 broken on 13.x+ but it is slower on all previous
3546         # versions (tested) as well.
3547         _cflags_speed="-O2"
3548         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3549         if $_cc 2>&1 | grep -q Linker; then
3550             _ld_o='-out:$@'
3551         else
3552             _ld_o='-Fe$@'
3553         fi
3554         _cc_o='-Fo$@'
3555         _cc_e='-P'
3556         _flags_filter=icl_flags
3557         _ld_lib='lib%.a'
3558         _ld_path='-libpath:'
3559         # -Qdiag-error to make icl error when seeing certain unknown arguments
3560         _flags='-nologo -Qdiag-error:4044,10157'
3561         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3562         # with MSVC which enables it by default.
3563         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3564         if [ $pfx = hostcc ]; then
3565             append _cflags -Dsnprintf=_snprintf
3566         fi
3567         disable stripping
3568     elif $_cc 2>&1 | grep -q Microsoft; then
3569         _type=msvc
3570         _ident=$($_cc 2>&1 | head -n1)
3571         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3572         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3573         _cflags_speed="-O2"
3574         _cflags_size="-O1"
3575         if $_cc 2>&1 | grep -q Linker; then
3576             _ld_o='-out:$@'
3577         else
3578             _ld_o='-Fe$@'
3579         fi
3580         _cc_o='-Fo$@'
3581         _cc_e='-P -Fi$@'
3582         _flags_filter=msvc_flags
3583         _ld_lib='lib%.a'
3584         _ld_path='-libpath:'
3585         _flags='-nologo'
3586         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3587         if [ $pfx = hostcc ]; then
3588             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3589                 append _cflags -Dsnprintf=_snprintf
3590             fi
3591         fi
3592         disable stripping
3593     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3594         _type=cparser
3595         _ident=$($_cc --version | head -n1)
3596         _depflags='-MMD'
3597         _cflags_speed='-O4'
3598         _cflags_size='-O2'
3599         _flags_filter=cparser_flags
3600     fi
3601
3602     eval ${pfx}_type=\$_type
3603     eval ${pfx}_ident=\$_ident
3604 }
3605
3606 set_ccvars(){
3607     eval ${1}_C=\${_cc_c-\${${1}_C}}
3608     eval ${1}_E=\${_cc_e-\${${1}_E}}
3609     eval ${1}_O=\${_cc_o-\${${1}_O}}
3610
3611     if [ -n "$_depflags" ]; then
3612         eval ${1}_DEPFLAGS=\$_depflags
3613     else
3614         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3615         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3616         eval DEP${1}FLAGS=\$_flags
3617     fi
3618 }
3619
3620 probe_cc cc "$cc"
3621 cflags_filter=$_flags_filter
3622 cflags_speed=$_cflags_speed
3623 cflags_size=$_cflags_size
3624 cflags_noopt=$_cflags_noopt
3625 add_cflags $_flags $_cflags
3626 cc_ldflags=$_ldflags
3627 set_ccvars CC
3628
3629 probe_cc hostcc "$host_cc"
3630 host_cflags_filter=$_flags_filter
3631 add_host_cflags  $_flags $_cflags
3632 set_ccvars HOSTCC
3633
3634 test -n "$cc_type" && enable $cc_type ||
3635     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3636
3637 : ${as_default:=$cc}
3638 : ${dep_cc_default:=$cc}
3639 : ${ld_default:=$cc}
3640 : ${host_ld_default:=$host_cc}
3641 set_default ar as dep_cc ld host_ld windres
3642
3643 probe_cc as "$as"
3644 asflags_filter=$_flags_filter
3645 add_asflags $_flags $_cflags
3646 set_ccvars AS
3647
3648 probe_cc ld "$ld"
3649 ldflags_filter=$_flags_filter
3650 add_ldflags $_flags $_ldflags
3651 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3652 LD_O=${_ld_o-$LD_O}
3653 LD_LIB=${_ld_lib-$LD_LIB}
3654 LD_PATH=${_ld_path-$LD_PATH}
3655
3656 probe_cc hostld "$host_ld"
3657 host_ldflags_filter=$_flags_filter
3658 add_host_ldflags $_flags $_ldflags
3659 HOSTLD_O=${_ld_o-$HOSTLD_O}
3660
3661 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3662     probe_cc depcc "$dep_cc"
3663     CCDEP=${_DEPCMD:-$DEPCMD}
3664     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3665     DEPCCFLAGS=$_flags
3666 fi
3667
3668 if $ar 2>&1 | grep -q Microsoft; then
3669     arflags="-nologo"
3670     ar_o='-out:$@'
3671 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3672     arflags="rq"
3673     ar_o='$@'
3674 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3675     arflags='-Xany -r -c'
3676     ar_o='$@'
3677 elif $ar 2>&1 | grep -q "\[D\] "; then
3678     arflags="rcD"
3679     ar_o='$@'
3680 else
3681     arflags="rc"
3682     ar_o='$@'
3683 fi
3684
3685 add_cflags $extra_cflags
3686 add_cxxflags $extra_cxxflags
3687 add_asflags $extra_cflags
3688
3689 if test -n "$sysroot"; then
3690     case "$cc_type" in
3691         gcc|llvm_gcc|clang)
3692             add_cppflags --sysroot="$sysroot"
3693             add_ldflags --sysroot="$sysroot"
3694 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3695             add_cppflags -isysroot "$sysroot"
3696             add_ldflags -isysroot "$sysroot"
3697         ;;
3698         tms470)
3699             add_cppflags -I"$sysinclude"
3700             add_ldflags  --sysroot="$sysroot"
3701         ;;
3702     esac
3703 fi
3704
3705 if test "$cpu" = host; then
3706     enabled cross_compile &&
3707         die "--cpu=host makes no sense when cross-compiling."
3708
3709     case "$cc_type" in
3710         gcc|llvm_gcc)
3711             check_native(){
3712                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3713                 sed -n "/cc1.*$1=/{
3714                             s/.*$1=\\([^ ]*\\).*/\\1/
3715                             p
3716                             q
3717                         }" $TMPE
3718             }
3719             cpu=$(check_native -march || check_native -mcpu)
3720         ;;
3721     esac
3722
3723     test "${cpu:-host}" = host &&
3724         die "--cpu=host not supported with compiler $cc"
3725 fi
3726
3727 # Deal with common $arch aliases
3728 case "$arch" in
3729     aarch64|arm64)
3730         arch="aarch64"
3731     ;;
3732     arm*|iPad*|iPhone*)
3733         arch="arm"
3734     ;;
3735     mips*|IP*)
3736         arch="mips"
3737     ;;
3738     parisc*|hppa*)
3739         arch="parisc"
3740     ;;
3741     "Power Macintosh"|ppc*|powerpc*)
3742         arch="ppc"
3743     ;;
3744     s390|s390x)
3745         arch="s390"
3746     ;;
3747     sh4|sh)
3748         arch="sh4"
3749     ;;
3750     sun4u|sparc*)
3751         arch="sparc"
3752     ;;
3753     tilegx|tile-gx)
3754         arch="tilegx"
3755     ;;
3756     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3757         arch="x86"
3758     ;;
3759 esac
3760
3761 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3762 enable $arch
3763
3764 # Add processor-specific flags
3765 if enabled aarch64; then
3766
3767     case $cpu in
3768         armv*)
3769             cpuflags="-march=$cpu"
3770         ;;
3771         *)
3772             cpuflags="-mcpu=$cpu"
3773         ;;
3774     esac
3775
3776 elif enabled alpha; then
3777
3778     cpuflags="-mcpu=$cpu"
3779
3780 elif enabled arm; then
3781
3782     check_arm_arch() {
3783         check_cpp_condition stddef.h \
3784             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3785             $cpuflags
3786     }
3787
3788     probe_arm_arch() {
3789         if   check_arm_arch 4;        then echo armv4;
3790         elif check_arm_arch 4T;       then echo armv4t;
3791         elif check_arm_arch 5;        then echo armv5;
3792         elif check_arm_arch 5E;       then echo armv5e;
3793         elif check_arm_arch 5T;       then echo armv5t;
3794         elif check_arm_arch 5TE;      then echo armv5te;
3795         elif check_arm_arch 5TEJ;     then echo armv5te;
3796         elif check_arm_arch 6;        then echo armv6;
3797         elif check_arm_arch 6J;       then echo armv6j;
3798         elif check_arm_arch 6K;       then echo armv6k;
3799         elif check_arm_arch 6Z;       then echo armv6z;
3800         elif check_arm_arch 6ZK;      then echo armv6zk;
3801         elif check_arm_arch 6T2;      then echo armv6t2;
3802         elif check_arm_arch 7;        then echo armv7;
3803         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3804         elif check_arm_arch 7S;       then echo armv7-a;
3805         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3806         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3807         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3808         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3809         fi
3810     }
3811
3812     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3813
3814     case $cpu in
3815         armv*)
3816             cpuflags="-march=$cpu"
3817             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3818         ;;
3819         *)
3820             cpuflags="-mcpu=$cpu"
3821             case $cpu in
3822                 cortex-a*)                               subarch=armv7a  ;;
3823                 cortex-r*)                               subarch=armv7r  ;;
3824                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3825                 arm11*)                                  subarch=armv6   ;;
3826                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3827                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3828                 *)                             subarch=$(probe_arm_arch) ;;
3829             esac
3830         ;;
3831     esac
3832
3833     case "$subarch" in
3834         armv5t*)    enable fast_clz                ;;
3835         armv[6-8]*)
3836             enable fast_clz
3837             disabled fast_unaligned || enable fast_unaligned
3838             ;;
3839     esac
3840
3841 elif enabled avr32; then
3842
3843     case $cpu in
3844         ap7[02]0[0-2])
3845             subarch="avr32_ap"
3846             cpuflags="-mpart=$cpu"
3847         ;;
3848         ap)
3849             subarch="avr32_ap"
3850             cpuflags="-march=$cpu"
3851         ;;
3852         uc3[ab]*)
3853             subarch="avr32_uc"
3854             cpuflags="-mcpu=$cpu"
3855         ;;
3856         uc)
3857             subarch="avr32_uc"
3858             cpuflags="-march=$cpu"
3859         ;;
3860     esac
3861
3862 elif enabled bfin; then
3863
3864     cpuflags="-mcpu=$cpu"
3865
3866 elif enabled mips; then
3867
3868     cpuflags="-march=$cpu"
3869
3870     case $cpu in
3871         24kc)
3872             disable mips32r5
3873             disable mips64r6
3874             disable mipsfpu
3875             disable mipsdspr1
3876             disable mipsdspr2
3877             disable msa
3878         ;;
3879         24kf*)
3880             disable mips32r5
3881             disable mips64r6
3882             disable mipsdspr1
3883             disable mipsdspr2
3884             disable msa
3885         ;;
3886         24kec|34kc|1004kc)
3887             disable mips32r5
3888             disable mips64r6
3889             disable mipsfpu
3890             disable mipsdspr2
3891             disable msa
3892         ;;
3893         24kef*|34kf*|1004kf*)
3894             disable mips32r5
3895             disable mips64r6
3896             disable mipsdspr2
3897             disable msa
3898         ;;
3899         74kc)
3900             disable mips32r5
3901             disable mips64r6
3902             disable mipsfpu
3903             disable msa
3904         ;;
3905         74kf)
3906             disable mips32r5
3907             disable mips64r6
3908             disable msa
3909         ;;
3910         p5600)
3911             disable mips64r6
3912             disable mipsdspr1
3913             disable mipsdspr2
3914
3915             check_cflags "-mtune=p5600"
3916         ;;
3917         i6400)
3918             disable mips32r5
3919             disable mipsdspr1
3920             disable mipsdspr2
3921             disable mipsfpu
3922
3923             check_cflags "-mtune=i6400 -mabi=64"
3924             check_ldflags "-mabi=64"
3925         ;;
3926         loongson3*)
3927             disable mipsfpu
3928             disable mips32r2
3929             disable mips32r5
3930             disable mips64r6
3931             disable mipsdspr1
3932             disable mipsdspr2
3933             disable msa
3934             enable local_aligned_8 local_aligned_16
3935             enable simd_align_16
3936             enable fast_64bit
3937             enable fast_clz
3938             enable fast_cmov
3939             enable fast_unaligned
3940             disable aligned_stack
3941             cpuflags="-march=loongson3a -mhard-float"
3942         ;;
3943         generic)
3944             disable mips32r5
3945             disable mips64r6
3946             disable msa
3947         ;;
3948     esac
3949
3950 elif enabled ppc; then
3951
3952     disable ldbrx
3953     disable vsx
3954
3955     case $(tolower $cpu) in
3956         601|ppc601|powerpc601)
3957             cpuflags="-mcpu=601"
3958             disable altivec
3959         ;;
3960         603*|ppc603*|powerpc603*)
3961             cpuflags="-mcpu=603"
3962             disable altivec
3963         ;;
3964         604*|ppc604*|powerpc604*)
3965             cpuflags="-mcpu=604"
3966             disable altivec
3967         ;;
3968         g3|75*|ppc75*|powerpc75*)
3969             cpuflags="-mcpu=750"
3970             disable altivec
3971         ;;
3972         g4|745*|ppc745*|powerpc745*)
3973             cpuflags="-mcpu=7450"
3974         ;;
3975         74*|ppc74*|powerpc74*)
3976             cpuflags="-mcpu=7400"
3977         ;;
3978         g5|970|ppc970|powerpc970)
3979             cpuflags="-mcpu=970"
3980         ;;
3981         power[3-8]*)
3982             cpuflags="-mcpu=$cpu"
3983         ;;
3984         cell)
3985             cpuflags="-mcpu=cell"
3986             enable ldbrx
3987         ;;
3988         e500mc)
3989             cpuflags="-mcpu=e500mc"
3990             disable altivec
3991         ;;
3992         e500v2)
3993             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3994             disable altivec
3995             disable dcbzl
3996         ;;
3997         e500)
3998             cpuflags="-mcpu=8540 -mhard-float"
3999             disable altivec
4000             disable dcbzl
4001         ;;
4002     esac
4003
4004 elif enabled sparc; then
4005
4006     case $cpu in
4007         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4008             cpuflags="-mcpu=$cpu"
4009         ;;
4010         ultrasparc*|niagara[234])
4011             cpuflags="-mcpu=$cpu"
4012         ;;
4013     esac
4014
4015 elif enabled x86; then
4016
4017     case $cpu in
4018         i[345]86|pentium)
4019             cpuflags="-march=$cpu"
4020             disable i686
4021             disable mmx
4022         ;;
4023         # targets that do NOT support nopl and conditional mov (cmov)
4024         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4025             cpuflags="-march=$cpu"
4026             disable i686
4027         ;;
4028         # targets that do support nopl and conditional mov (cmov)
4029         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4030         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4031             cpuflags="-march=$cpu"
4032             enable i686
4033             enable fast_cmov
4034         ;;
4035         # targets that do support conditional mov but on which it's slow
4036         pentium4|pentium4m|prescott|nocona)
4037             cpuflags="-march=$cpu"
4038             enable i686
4039             disable fast_cmov
4040         ;;
4041     esac
4042
4043 fi
4044
4045 if [ "$cpu" != generic ]; then
4046     add_cflags  $cpuflags
4047     add_asflags $cpuflags
4048 fi
4049
4050 # compiler sanity check
4051 check_exec <<EOF
4052 int main(void){ return 0; }
4053 EOF
4054 if test "$?" != 0; then
4055     echo "$cc is unable to create an executable file."
4056     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4057         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4058         echo "Only do this if you know what cross compiling means."
4059     fi
4060     die "C compiler test failed."
4061 fi
4062
4063 add_cppflags -D_ISOC99_SOURCE
4064 add_cxxflags -D__STDC_CONSTANT_MACROS
4065 check_cflags -std=c99
4066 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4067 #include <stdlib.h>
4068 EOF
4069 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4070 #include <stdlib.h>
4071 EOF
4072
4073 add_host_cppflags -D_ISOC99_SOURCE
4074 check_host_cflags -std=c99
4075 check_host_cflags -Wall
4076 check_host_cflags -O3
4077
4078 check_64bit(){
4079     arch32=$1
4080     arch64=$2
4081     expr=$3
4082     check_code cc "" "int test[2*($expr) - 1]" &&
4083         subarch=$arch64 || subarch=$arch32
4084 }
4085
4086 case "$arch" in
4087     aarch64|alpha|ia64)
4088         spic=$shared
4089     ;;
4090     mips)
4091         check_64bit mips mips64 '_MIPS_SIM > 1'
4092         spic=$shared
4093     ;;
4094     parisc)
4095         check_64bit parisc parisc64 'sizeof(void *) > 4'
4096         spic=$shared
4097     ;;
4098     ppc)
4099         check_64bit ppc ppc64 'sizeof(void *) > 4'
4100         spic=$shared
4101     ;;
4102     s390)
4103         check_64bit s390 s390x 'sizeof(void *) > 4'
4104         spic=$shared
4105     ;;
4106     sparc)
4107         check_64bit sparc sparc64 'sizeof(void *) > 4'
4108         spic=$shared
4109     ;;
4110     x86)
4111         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4112         # Treat x32 as x64 for now. Note it also needs spic=$shared
4113         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4114             subarch=x86_64
4115         if test "$subarch" = "x86_64"; then
4116             spic=$shared
4117         fi
4118     ;;
4119     ppc)
4120         check_cc <<EOF && subarch="ppc64"
4121         int test[(int)sizeof(char*) - 7];
4122 EOF
4123     ;;
4124 esac
4125
4126 enable $subarch
4127 enabled spic && enable_weak pic
4128
4129 # OS specific
4130 case $target_os in
4131     aix)
4132         SHFLAGS=-shared
4133         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4134         enabled shared && add_ldflags -Wl,-brtl
4135         ;;
4136     android)
4137         disable symver
4138         enable section_data_rel_ro
4139         SLIB_INSTALL_NAME='$(SLIBNAME)'
4140         SLIB_INSTALL_LINKS=
4141         # soname not set on purpose
4142         SHFLAGS=-shared
4143         ;;
4144     haiku)
4145         prefix_default="/boot/common"
4146         network_extralibs="-lnetwork"
4147         host_libs=
4148         ;;
4149     sunos)
4150         SHFLAGS='-shared -Wl,-h,$$(@F)'
4151         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4152         network_extralibs="-lsocket -lnsl"
4153         add_cppflags -D__EXTENSIONS__
4154         # When using suncc to build, the Solaris linker will mark
4155         # an executable with each instruction set encountered by
4156         # the Solaris assembler.  As our libraries contain their own
4157         # guards for processor-specific code, instead suppress
4158         # generation of the HWCAPS ELF section on Solaris x86 only.
4159         enabled_all suncc x86 &&
4160             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4161             add_ldflags -Wl,-M,mapfile
4162         nm_default='nm -P -g'
4163         ;;
4164     netbsd)
4165         disable symver
4166         oss_indev_extralibs="-lossaudio"
4167         oss_outdev_extralibs="-lossaudio"
4168         enabled gcc || check_ldflags -Wl,-zmuldefs
4169         ;;
4170     openbsd|bitrig)
4171         disable symver
4172         SHFLAGS='-shared'
4173         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4174         SLIB_INSTALL_LINKS=
4175         oss_indev_extralibs="-lossaudio"
4176         oss_outdev_extralibs="-lossaudio"
4177         ;;
4178     dragonfly)
4179         disable symver
4180         ;;
4181     freebsd)
4182         ;;
4183     bsd/os)
4184         add_extralibs -lpoll -lgnugetopt
4185         strip="strip -d"
4186         ;;
4187     darwin)
4188         enabled ppc && add_asflags -force_cpusubtype_ALL
4189         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4190         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4191         strip="${strip} -x"
4192         add_ldflags -Wl,-dynamic,-search_paths_first
4193         SLIBSUF=".dylib"
4194         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4195         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4196         objformat="macho"
4197         enabled x86_64 && objformat="macho64"
4198         enabled_any pic shared x86_64 ||
4199             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4200         ;;
4201     mingw32*)
4202         if test $target_os = "mingw32ce"; then
4203             disable network
4204         else
4205             target_os=mingw32
4206         fi
4207         LIBTARGET=i386
4208         if enabled x86_64; then
4209             LIBTARGET="i386:x86-64"
4210         elif enabled arm; then
4211             LIBTARGET=arm-wince
4212         fi
4213         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4214         check_ldflags -Wl,--nxcompat
4215         check_ldflags -Wl,--dynamicbase
4216         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4217         shlibdir_default="$bindir_default"
4218         SLIBPREF=""
4219         SLIBSUF=".dll"
4220         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4221         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4222         dlltool="${cross_prefix}dlltool"
4223         if check_cmd lib.exe -list; then
4224             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4225             if enabled x86_64; then
4226                 LIBTARGET=x64
4227             fi
4228         elif check_cmd $dlltool --version; then
4229             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4230         fi
4231         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4232         SLIB_INSTALL_LINKS=
4233         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4234         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4235         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4236         objformat="win32"
4237         ranlib=:
4238         enable dos_paths
4239         ;;
4240     win32|win64)
4241         disable symver
4242         if enabled shared; then
4243             # Link to the import library instead of the normal static library
4244             # for shared libs.
4245             LD_LIB='%.lib'
4246             # Cannot build both shared and static libs with MSVC or icl.
4247             disable static
4248         fi
4249         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4250         shlibdir_default="$bindir_default"
4251         SLIBPREF=""
4252         SLIBSUF=".dll"
4253         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4254         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4255         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4256         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4257         SLIB_INSTALL_LINKS=
4258         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4259         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4260         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4261         objformat="win32"
4262         ranlib=:
4263         enable dos_paths
4264         ;;
4265     cygwin*)
4266         target_os=cygwin
4267         shlibdir_default="$bindir_default"
4268         SLIBPREF="cyg"
4269         SLIBSUF=".dll"
4270         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4271         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4272         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4273         SLIB_INSTALL_LINKS=
4274         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4275         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4276         objformat="win32"
4277         enable dos_paths
4278         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4279         ;;
4280     *-dos|freedos|opendos)
4281         network_extralibs="-lsocket"
4282         objformat="coff"
4283         enable dos_paths
4284         add_cppflags -U__STRICT_ANSI__
4285         ;;
4286     linux)
4287         enable dv1394
4288         enable section_data_rel_ro
4289         ;;
4290     irix*)
4291         target_os=irix
4292         ranlib="echo ignoring ranlib"
4293         ;;
4294     os/2*)
4295         strip="lxlite -CS"
4296         ln_s="cp -f"
4297         objformat="aout"
4298         add_cppflags -D_GNU_SOURCE
4299         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4300         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4301         LIBSUF="_s.a"
4302         SLIBPREF=""
4303         SLIBSUF=".dll"
4304         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4305         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4306         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4307             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4308             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4309             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4310             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4311         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4312             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4313         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4314         enable dos_paths
4315         enable_weak os2threads
4316         ;;
4317     gnu/kfreebsd)
4318         add_cppflags -D_BSD_SOURCE
4319         ;;
4320     gnu)
4321         ;;
4322     qnx)
4323         add_cppflags -D_QNX_SOURCE
4324         network_extralibs="-lsocket"
4325         ;;
4326     symbian)
4327         SLIBSUF=".dll"
4328         enable dos_paths
4329         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4330         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4331         add_ldflags -Wl,--target1-abs,--no-undefined \
4332                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4333                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4334         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4335                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4336                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4337         ;;
4338     osf1)
4339         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4340         ;;
4341     minix)
4342         ;;
4343     plan9)
4344         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4345                      -D_REENTRANT_SOURCE        \
4346                      -D_RESEARCH_SOURCE         \
4347                      -DFD_SETSIZE=96            \
4348                      -DHAVE_SOCK_OPTS
4349         add_compat strtod.o strtod=avpriv_strtod
4350         network_extralibs='-lbsd'
4351         exeobjs=compat/plan9/main.o
4352         disable ffserver
4353         cp_f='cp'
4354         ;;
4355     none)
4356         ;;
4357     *)
4358         die "Unknown OS '$target_os'."
4359         ;;
4360 esac
4361
4362 # determine libc flavour
4363
4364 probe_libc(){
4365     pfx=$1
4366     pfx_no_=${pfx%_}
4367     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4368     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4369         eval ${pfx}libc_type=uclibc
4370         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4371     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4372         eval ${pfx}libc_type=glibc
4373         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4374     # MinGW headers can be installed on Cygwin, so check for newlib first.
4375     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4376         eval ${pfx}libc_type=newlib
4377         add_${pfx}cppflags -U__STRICT_ANSI__
4378     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4379     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4380         eval ${pfx}libc_type=mingw64
4381         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4382             add_compat msvcrt/snprintf.o
4383             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4384         fi
4385         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4386         eval test \$${pfx_no_}cc_type = "gcc" &&
4387             add_${pfx}cppflags -D__printf__=__gnu_printf__
4388     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4389          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4390         eval ${pfx}libc_type=mingw32
4391         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4392             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4393             die "ERROR: MinGW32 runtime version must be >= 3.15."
4394         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4395         eval test \$${pfx_no_}cc_type = "gcc" &&
4396             add_${pfx}cppflags -D__printf__=__gnu_printf__
4397     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4398         eval ${pfx}libc_type=msvcrt
4399         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4400         # 0x601 by default unless something else is set by the user.
4401         # This can easily lead to us detecting functions only present
4402         # in such new versions and producing binaries requiring windows 7.0.
4403         # Therefore explicitly set the default to XP unless the user has
4404         # set something else on the command line.
4405         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4406             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4407     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4408         eval ${pfx}libc_type=klibc
4409     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4410         eval ${pfx}libc_type=bionic
4411     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4412         eval ${pfx}libc_type=solaris
4413         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4414     fi
4415     check_${pfx}cc <<EOF
4416 #include <time.h>
4417 void *v = localtime_r;
4418 EOF
4419 test "$?" != 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
4420 #include <time.h>
4421 void *v = localtime_r;
4422 EOF
4423
4424 }
4425
4426 probe_libc
4427 test -n "$libc_type" && enable libc_$libc_type
4428 probe_libc host_
4429 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4430
4431 case $libc_type in
4432     bionic)
4433         add_compat strtod.o strtod=avpriv_strtod
4434         ;;
4435     msvcrt)
4436         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4437             add_compat strtod.o strtod=avpriv_strtod
4438             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4439                                          _snprintf=avpriv_snprintf  \
4440                                          vsnprintf=avpriv_vsnprintf
4441         fi
4442         ;;
4443 esac
4444
4445 # hacks for compiler/libc/os combinations
4446
4447 if enabled_all tms470 libc_glibc; then
4448     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4449     add_cppflags -D__USER_LABEL_PREFIX__=
4450     add_cppflags -D__builtin_memset=memset
4451     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4452     add_cflags   -pds=48    # incompatible redefinition of macro
4453 fi
4454
4455 if enabled_all ccc libc_glibc; then
4456     add_ldflags -Wl,-z,now  # calls to libots crash without this
4457 fi
4458
4459 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4460     add_cppflags '-I\$(SRC_PATH)/compat/float'
4461
4462 esc(){
4463     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4464 }
4465
4466 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4467
4468 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4469
4470 set_default libdir
4471 : ${shlibdir_default:="$libdir"}
4472
4473 set_default $PATHS_LIST
4474 set_default nm
4475
4476 # we need to build at least one lib type
4477 if ! enabled_any static shared; then
4478     cat <<EOF
4479 At least one library type must be built.
4480 Specify --enable-static to build the static libraries or --enable-shared to
4481 build the shared libraries as well. To only build the shared libraries specify
4482 --disable-static in addition to --enable-shared.
4483 EOF
4484     exit 1;
4485 fi
4486
4487 die_license_disabled() {
4488     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4489 }
4490
4491 die_license_disabled_gpl() {
4492     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4493 }
4494
4495 die_license_disabled gpl frei0r
4496 die_license_disabled gpl libcdio
4497 die_license_disabled gpl libsmbclient
4498 die_license_disabled gpl libutvideo
4499 die_license_disabled gpl libvidstab
4500 die_license_disabled gpl libx264
4501 die_license_disabled gpl libx265
4502 die_license_disabled gpl libxavs
4503 die_license_disabled gpl libxvid
4504 die_license_disabled gpl libzvbi
4505 die_license_disabled gpl x11grab
4506
4507 die_license_disabled nonfree libaacplus
4508 die_license_disabled nonfree libfaac
4509 die_license_disabled nonfree nvenc
4510 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4511 enabled gpl && die_license_disabled_gpl nonfree openssl
4512
4513 die_license_disabled version3 libopencore_amrnb
4514 die_license_disabled version3 libopencore_amrwb
4515 die_license_disabled version3 libsmbclient
4516 die_license_disabled version3 libvo_aacenc
4517 die_license_disabled version3 libvo_amrwbenc
4518
4519 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4520
4521 disabled optimizations || check_cflags -fomit-frame-pointer
4522
4523 enable_weak_pic() {
4524     disabled pic && return
4525     enable pic
4526     add_cppflags -DPIC
4527     case "$target_os" in
4528     mingw*|cygwin*)
4529         ;;
4530     *)
4531         add_cflags -fPIC
4532         ;;
4533     esac
4534     add_asflags  -fPIC
4535 }
4536
4537 enabled pic && enable_weak_pic
4538
4539 check_cc <<EOF || die "Symbol mangling check failed."
4540 int ff_extern;
4541 EOF
4542 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4543 extern_prefix=${sym%%ff_extern*}
4544
4545 check_cc <<EOF && enable_weak inline_asm
4546 void foo(void) { __asm__ volatile ("" ::); }
4547 EOF
4548
4549 _restrict=
4550 for restrict_keyword in restrict __restrict__ __restrict; do
4551     check_cc <<EOF && _restrict=$restrict_keyword && break
4552 void foo(char * $restrict_keyword p);
4553 EOF
4554 done
4555
4556 check_cc <<EOF && enable pragma_deprecated
4557 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4558 EOF
4559
4560 check_cc <<EOF && enable attribute_packed
4561 struct { int x; } __attribute__((packed)) x;
4562 EOF
4563
4564 check_cc <<EOF && enable attribute_may_alias
4565 union { int x; } __attribute__((may_alias)) x;
4566 EOF
4567
4568 check_cc <<EOF || die "endian test failed"
4569 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4570 EOF
4571 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4572
4573 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4574     if ! enabled bigendian && enabled altivec ;then
4575         enable vsx
4576     fi
4577 fi
4578
4579 check_gas() {
4580     log "check_gas using '$as' as AS"
4581     # :vararg is used on aarch64, arm and ppc altivec
4582     check_as <<EOF || return 1
4583 .macro m n, y:vararg=0
4584 \n: .int \y
4585 .endm
4586 m x
4587 EOF
4588     # .altmacro is only used in arm asm
4589     ! enabled arm || check_as <<EOF || return 1
4590 .altmacro
4591 EOF
4592     enable gnu_as
4593     return 0
4594 }
4595
4596 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4597     nogas=:
4598     enabled_any arm aarch64 && nogas=die
4599     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4600     as_noop=-v
4601
4602     case $as_type in
4603         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4604         gcc)  gaspp_as_type=gas ;;
4605         *)    gaspp_as_type=$as_type ;;
4606     esac
4607
4608     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4609
4610     test "${as#*gas-preprocessor.pl}" != "$as" ||
4611     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4612         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4613
4614     if ! check_gas ; then
4615         as=${gas:=$as}
4616         check_gas || \
4617             $nogas "GNU assembler not found, install/update gas-preprocessor"
4618     fi
4619
4620     check_as <<EOF && enable as_func
4621 .func test
4622 .endfunc
4623 EOF
4624 fi
4625
4626 check_inline_asm inline_asm_labels '"1:\n"'
4627
4628 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4629
4630 if enabled aarch64; then
4631     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4632     # internal assembler in clang 3.3 does not support this instruction
4633     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4634     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4635
4636     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4637
4638 elif enabled alpha; then
4639
4640     check_cflags -mieee
4641
4642 elif enabled arm; then
4643
4644     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4645 float func(float a, float b){ return a+b; }
4646 EOF
4647
4648     enabled thumb && check_cflags -mthumb || check_cflags -marm
4649
4650     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4651         enable vfp_args
4652     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4653         case "${cross_prefix:-$cc}" in
4654             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4655             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4656 __asm__ (".eabi_attribute 28, 1");
4657 int main(void) { return 0; }
4658 EOF
4659         esac
4660         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4661     fi
4662
4663     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4664     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4665     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4666     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4667     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4668     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4669     enabled setend  && check_insn setend  'setend be'
4670
4671     [ $target_os = linux ] || [ $target_os = android ] ||
4672         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4673             $ARCH_EXT_LIST_ARM
4674
4675     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4676
4677     check_as <<EOF && enable as_dn_directive
4678 ra .dn d0.i16
4679 .unreq ra
4680 EOF
4681
4682     # llvm's integrated assembler supports .object_arch from llvm 3.5
4683     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4684 .object_arch armv4
4685 EOF
4686
4687     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4688
4689 elif enabled mips; then
4690
4691     # Enable minimum ISA based on selected options
4692     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4693         add_cflags "-mips64r2"
4694         add_asflags "-mips64r2"
4695     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4696         add_cflags "-mips64"
4697         add_asflags "-mips64"
4698     elif enabled mipsdspr1 || enabled mipsdspr2; then
4699         add_cflags "-mips32r2 -mfp32"
4700         add_asflags "-mips32r2 -mfp32"
4701     elif enabled mips32r5 || enabled mips64r6; then
4702         check_cflags "-mfp64"
4703         check_ldflags "-mfp64"
4704     fi
4705
4706     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4707      check_ldflags "-mips32r5" &&
4708      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4709     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4710      check_ldflags "-mips64r6" &&
4711      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4712     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4713      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4714     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4715      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4716     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4717      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4718     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4719      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4720     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4721
4722     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4723     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4724     enabled msa && add_asflags "-mmsa"
4725
4726 elif enabled parisc; then
4727
4728     if enabled gcc; then
4729         case $($cc -dumpversion) in
4730             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4731         esac
4732     fi
4733
4734 elif enabled ppc; then
4735
4736     enable local_aligned_8 local_aligned_16 local_aligned_32
4737
4738     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4739     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4740     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4741     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4742
4743     # AltiVec flags: The FSF version of GCC differs from the Apple version
4744     if enabled altivec; then
4745         check_cflags -maltivec -mabi=altivec &&
4746         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4747         check_cflags -faltivec
4748
4749         # check if our compiler supports Motorola AltiVec C API
4750         check_cc <<EOF || disable altivec
4751 $inc_altivec_h
4752 int main(void) {
4753     vector signed int v1 = (vector signed int) { 0 };
4754     vector signed int v2 = (vector signed int) { 1 };
4755     v1 = vec_add(v1, v2);
4756     return 0;
4757 }
4758 EOF
4759
4760         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4761     fi
4762
4763     if enabled vsx; then
4764         check_cflags -mvsx
4765     fi
4766 elif enabled x86; then
4767
4768     check_builtin rdtsc    intrin.h   "__rdtsc()"
4769     check_builtin mm_empty mmintrin.h "_mm_empty()"
4770
4771     enable local_aligned_8 local_aligned_16 local_aligned_32
4772
4773     # check whether EBP is available on x86
4774     # As 'i' is stored on the stack, this program will crash
4775     # if the base pointer is used to access it because the
4776     # base pointer is cleared in the inline assembly code.
4777     check_exec_crash <<EOF && enable ebp_available
4778 volatile int i=0;
4779 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4780 return i;
4781 EOF
4782
4783     # check whether EBX is available on x86
4784     check_inline_asm ebx_available '""::"b"(0)' &&
4785         check_inline_asm ebx_available '"":::"%ebx"'
4786
4787     # check whether xmm clobbers are supported
4788     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4789
4790     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4791         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4792
4793     # check whether binutils is new enough to compile SSSE3/MMXEXT
4794     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4795     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4796
4797     if ! disabled_any asm mmx yasm; then
4798         if check_cmd $yasmexe --version; then
4799             enabled x86_64 && yasm_extra="-m amd64"
4800             yasm_debug="-g dwarf2"
4801         elif check_cmd nasm -v; then
4802             yasmexe=nasm
4803             yasm_debug="-g -F dwarf"
4804             if enabled x86_64; then
4805                 case "$objformat" in
4806                     elf)   objformat=elf64 ;;
4807                     win32) objformat=win64 ;;
4808                 esac
4809             fi
4810         fi
4811
4812         YASMFLAGS="-f $objformat $yasm_extra"
4813         enabled pic               && append YASMFLAGS "-DPIC"
4814         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4815         case "$objformat" in
4816             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4817         esac
4818
4819         check_yasm "movbe ecx, [5]" && enable yasm ||
4820             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4821         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4822         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4823         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4824         check_yasm "CPU amdnop" || disable cpunop
4825     fi
4826
4827     case "$cpu" in
4828         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4829             disable fast_clz
4830         ;;
4831     esac
4832
4833 fi
4834
4835 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4836
4837 check_ldflags -Wl,--as-needed
4838 check_ldflags -Wl,-z,noexecstack
4839
4840 if check_func dlopen; then
4841     ldl=
4842 elif check_func dlopen -ldl; then
4843     ldl=-ldl
4844 fi
4845
4846 frei0r_filter_extralibs='$ldl'
4847 frei0r_src_filter_extralibs='$ldl'
4848 ladspa_filter_extralibs='$ldl'
4849 nvenc_encoder_extralibs='$ldl'
4850
4851 if ! disabled network; then
4852     check_func getaddrinfo $network_extralibs
4853     check_func getservbyport $network_extralibs
4854     check_func inet_aton $network_extralibs
4855
4856     check_type netdb.h "struct addrinfo"
4857     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4858     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4859     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4860     check_type poll.h "struct pollfd"
4861     check_type netinet/sctp.h "struct sctp_event_subscribe"
4862     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4863     check_type netinet/in.h "struct sockaddr_in6"
4864     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4865     check_type "sys/types.h sys/socket.h" socklen_t
4866
4867     # Prefer arpa/inet.h over winsock2
4868     if check_header arpa/inet.h ; then
4869         check_func closesocket
4870     elif check_header winsock2.h ; then
4871         check_func_headers winsock2.h closesocket -lws2 &&
4872             network_extralibs="-lws2" ||
4873         { check_func_headers winsock2.h closesocket -lws2_32 &&
4874             network_extralibs="-lws2_32"; } || disable winsock2_h network
4875         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4876
4877         check_type ws2tcpip.h socklen_t
4878         check_type ws2tcpip.h "struct addrinfo"
4879         check_type ws2tcpip.h "struct group_source_req"
4880         check_type ws2tcpip.h "struct ip_mreq_source"
4881         check_type ws2tcpip.h "struct ipv6_mreq"
4882         check_type winsock2.h "struct pollfd"
4883         check_struct winsock2.h "struct sockaddr" sa_len
4884         check_type ws2tcpip.h "struct sockaddr_in6"
4885         check_type ws2tcpip.h "struct sockaddr_storage"
4886     else
4887         disable network
4888     fi
4889 fi
4890
4891 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4892 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4893 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4894 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4895 check_builtin sarestart signal.h "SA_RESTART"
4896 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4897
4898 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4899 check_func  ${malloc_prefix}memalign            && enable memalign
4900 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4901
4902 check_func  access
4903 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4904 check_func  fcntl
4905 check_func  fork
4906 check_func  gethrtime
4907 check_func  getopt
4908 check_func  getrusage
4909 check_func  gettimeofday
4910 check_func  gmtime_r
4911 check_func  isatty
4912 check_func  localtime_r
4913 check_func  mach_absolute_time
4914 check_func  mkstemp
4915 check_func  mmap
4916 check_func  mprotect
4917 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4918 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4919 check_func  sched_getaffinity
4920 check_func  setrlimit
4921 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4922 check_func  strerror_r
4923 check_func  sysconf
4924 check_func  sysctl
4925 check_func  usleep
4926
4927 check_func_headers conio.h kbhit
4928 check_func_headers io.h setmode
4929 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4930 check_func_headers stdlib.h getenv
4931
4932 check_func_headers windows.h CoTaskMemFree -lole32
4933 check_func_headers windows.h GetProcessAffinityMask
4934 check_func_headers windows.h GetProcessTimes
4935 check_func_headers windows.h GetSystemTimeAsFileTime
4936 check_func_headers windows.h MapViewOfFile
4937 check_func_headers windows.h PeekNamedPipe
4938 check_func_headers windows.h SetConsoleTextAttribute
4939 check_func_headers windows.h Sleep
4940 check_func_headers windows.h VirtualAlloc
4941 check_struct windows.h "CONDITION_VARIABLE" Ptr
4942 check_func_headers glob.h glob
4943 enabled xlib &&
4944     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4945
4946 check_header direct.h
4947 check_header dlfcn.h
4948 check_header dxva.h
4949 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4950 check_header io.h
4951 check_header libcrystalhd/libcrystalhd_if.h
4952 check_header mach/mach_time.h
4953 check_header malloc.h
4954 check_header net/udplite.h
4955 check_header poll.h
4956 check_header sys/mman.h
4957 check_header sys/param.h
4958 check_header sys/resource.h
4959 check_header sys/select.h
4960 check_header sys/time.h
4961 check_header sys/un.h
4962 check_header termios.h
4963 check_header unistd.h
4964 check_header valgrind/valgrind.h
4965 check_header vdpau/vdpau.h
4966 check_header vdpau/vdpau_x11.h
4967 check_header VideoDecodeAcceleration/VDADecoder.h
4968 check_header windows.h
4969 check_header X11/extensions/XvMClib.h
4970 check_header asm/types.h
4971
4972 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4973 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4974 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4975
4976 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4977
4978 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4979
4980 if ! disabled w32threads && ! enabled pthreads; then
4981     check_func_headers "windows.h process.h" _beginthreadex &&
4982         enable w32threads || disable w32threads
4983 fi
4984
4985 # check for some common methods of building with pthread support
4986 # do this before the optional library checks as some of them require pthreads
4987 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4988     enable pthreads
4989     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4990         add_cflags -pthread
4991         add_extralibs -pthread
4992     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4993         add_cflags -pthreads
4994         add_extralibs -pthreads
4995     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4996         add_cflags -ldl -pthread
4997         add_extralibs -ldl -pthread
4998     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4999         add_extralibs -lpthreadGC2
5000     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5001         :
5002     elif ! check_func pthread_join && ! check_func pthread_create; then
5003         disable pthreads
5004     fi
5005     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5006 fi
5007
5008
5009 if enabled pthreads; then
5010   check_func pthread_cancel
5011 fi
5012
5013 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5014 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5015 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5016
5017 check_lib math.h sin -lm && LIBM="-lm"
5018 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5019
5020 atan2f_args=2
5021 ldexpf_args=2
5022 powf_args=2
5023
5024 for func in $MATH_FUNCS; do
5025     eval check_mathfunc $func \${${func}_args:-1}
5026 done
5027
5028 # these are off by default, so fail if requested and not available
5029 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5030 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5031                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5032 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5033                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5034                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5035 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5036 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5037 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5038 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5039 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5040 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5041 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5042 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5043 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5044 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5045                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5046                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5047 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5048 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5049 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5050 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5051 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5052 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5053 enabled fontconfig        && enable libfontconfig
5054 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5055 enabled libfreetype       && require_libfreetype
5056 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5057 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5058 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5059                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5060                                done || die "ERROR: libgsm not found"; }
5061 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5062 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5063 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5064 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5065 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5066 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5067 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5068 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5069 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5070 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5071                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5072                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5073                                die "ERROR: libopenjpeg not found"; }
5074 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5075 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5076 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5077 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5078 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5079 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5080 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5081                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5082 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5083 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5084 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5085 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5086     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5087     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5088 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5089 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5090                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5091                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5092 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5093 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5094 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5095 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5096 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5097 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5098 enabled libvpx            && {
5099     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5100                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5101     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5102                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5103     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5104     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx || disable libvpx_vp9_encoder; } }
5105 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5106 enabled libwebp           && {
5107     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5108     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5109 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5110                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5111                                  warn "using libx264 without pkg-config"; } } &&
5112                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5113                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5114 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5115                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5116                                die "ERROR: libx265 version must be >= 57."; }
5117 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5118 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5119 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5120 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5121 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5122                                 { ! enabled cross_compile && {
5123                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5124                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5125                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5126                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5127                                die "ERROR: mmal not found"; }
5128 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5129                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5130                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5131                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5132 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5133                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5134                                die "ERROR: openal not found"; } &&
5135                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5136                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5137 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5138                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5139                                die "ERROR: opencl not found"; } &&
5140                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5141                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5142                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5143 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5144                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5145                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5146                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5147                                die "ERROR: opengl not found."
5148                              }
5149 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5150                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5151                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5152                                die "ERROR: openssl not found"; }
5153 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5154
5155 if enabled gnutls; then
5156     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5157     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5158 fi
5159
5160 # libdc1394 check
5161 if enabled libdc1394; then
5162     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5163         enable libdc1394_2; } ||
5164     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5165         enable libdc1394_1; } ||
5166     die "ERROR: No version of libdc1394 found "
5167 fi
5168 if ! disabled sdl; then
5169     SDL_CONFIG="${cross_prefix}sdl-config"
5170     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5171         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5172         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5173         enable sdl
5174     else
5175         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5176             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5177             sdl_libs=$("${SDL_CONFIG}" --libs)
5178             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5179             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5180             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5181             enable sdl
5182         elif enabled sdl ; then
5183             die "ERROR: SDL not found"
5184         else
5185             disable sdl
5186         fi
5187     fi
5188 fi
5189 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5190
5191 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5192 enabled makeinfo && (makeinfo --version | \
5193                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5194     && enable makeinfo_html || disable makeinfo_html
5195 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5196 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5197 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5198 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5199
5200 check_header linux/fb.h
5201 check_header linux/videodev.h
5202 check_header linux/videodev2.h
5203 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5204
5205 check_header sys/videoio.h
5206 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5207
5208 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5209 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5210 # w32api 3.12 had it defined wrong
5211 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5212
5213 check_type "dshow.h" IBaseFilter
5214
5215 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5216 { check_header dev/bktr/ioctl_meteor.h &&
5217   check_header dev/bktr/ioctl_bt848.h; } ||
5218 { check_header machine/ioctl_meteor.h &&
5219   check_header machine/ioctl_bt848.h; } ||
5220 { check_header dev/video/meteor/ioctl_meteor.h &&
5221   check_header dev/video/bktr/ioctl_bt848.h; } ||
5222 check_header dev/ic/bt8xx.h
5223
5224 check_header sndio.h
5225 if check_struct sys/soundcard.h audio_buf_info bytes; then
5226     enable_safe sys/soundcard.h
5227 else
5228     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5229     #include <sys/soundcard.h>
5230     audio_buf_info abc;
5231 EOF
5232 fi
5233 check_header soundcard.h
5234
5235 enabled_any alsa_indev alsa_outdev &&
5236     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5237
5238 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5239     check_func jack_port_get_latency_range -ljack
5240
5241 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5242
5243 if enabled libcdio; then
5244     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5245     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5246     die "ERROR: No usable libcdio/cdparanoia found"
5247 fi
5248
5249 enabled xlib &&
5250     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5251
5252 if ! disabled libxcb; then
5253     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5254         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5255     } && disable x11grab && enable libxcb
5256
5257 if enabled libxcb; then
5258     disabled libxcb_shm || {
5259         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5260             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5261         } && check_header sys/shm.h && enable libxcb_shm; }
5262
5263     disabled libxcb_xfixes || {
5264         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5265             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5266         } && enable libxcb_xfixes; }
5267
5268     disabled libxcb_shape || {
5269         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5270             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5271         } && enable libxcb_shape; }
5272
5273     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5274     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5275 fi
5276 fi
5277
5278 if enabled x11grab; then
5279     enabled xlib || die "ERROR: Xlib not found"
5280     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5281     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5282 fi
5283
5284 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5285
5286 enabled dxva2api_h &&
5287     check_cc <<EOF && enable dxva2api_cobj
5288 #define _WIN32_WINNT 0x0600
5289 #define COBJMACROS
5290 #include <windows.h>
5291 #include <d3d9.h>
5292 #include <dxva2api.h>
5293 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5294 EOF
5295
5296 enabled vaapi &&
5297     check_lib va/va.h vaInitialize -lva ||
5298     disable vaapi
5299
5300 enabled vaapi && enabled xlib &&
5301     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5302     enable vaapi_x11
5303
5304 enabled vdpau &&
5305     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5306     disable vdpau
5307
5308 enabled vdpau && enabled xlib &&
5309     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5310     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5311     enable vdpau_x11
5312
5313 # Funny iconv installations are not unusual, so check it after all flags have been set
5314 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5315
5316 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5317
5318 # add some useful compiler flags if supported
5319 check_cflags -Wdeclaration-after-statement
5320 check_cflags -Wall
5321 check_cflags -Wdisabled-optimization
5322 check_cflags -Wpointer-arith
5323 check_cflags -Wredundant-decls
5324 check_cflags -Wwrite-strings
5325 check_cflags -Wtype-limits
5326 check_cflags -Wundef
5327 check_cflags -Wmissing-prototypes
5328 check_cflags -Wno-pointer-to-int-cast
5329 check_cflags -Wstrict-prototypes
5330 check_cflags -Wempty-body
5331 enabled extra_warnings && check_cflags -Winline
5332
5333 check_disable_warning(){
5334     warning_flag=-W${1#-Wno-}
5335     test_cflags $warning_flag && add_cflags $1
5336 }
5337
5338 check_disable_warning -Wno-parentheses
5339 check_disable_warning -Wno-switch
5340 check_disable_warning -Wno-format-zero-length
5341 check_disable_warning -Wno-pointer-sign
5342
5343 # add some linker flags
5344 check_ldflags -Wl,--warn-common
5345 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5346 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5347 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5348
5349 # add some strip flags
5350 # -wN '..@*' is more selective than -x, but not available everywhere.
5351 check_stripflags -wN \'..@*\' || check_stripflags -x
5352
5353 enabled neon_clobber_test &&
5354     check_ldflags -Wl,--wrap,avcodec_open2              \
5355                   -Wl,--wrap,avcodec_decode_audio4      \
5356                   -Wl,--wrap,avcodec_decode_video2      \
5357                   -Wl,--wrap,avcodec_decode_subtitle2   \
5358                   -Wl,--wrap,avcodec_encode_audio2      \
5359                   -Wl,--wrap,avcodec_encode_video2      \
5360                   -Wl,--wrap,avcodec_encode_subtitle    \
5361                   -Wl,--wrap,swr_convert                \
5362                   -Wl,--wrap,avresample_convert ||
5363     disable neon_clobber_test
5364
5365 enabled xmm_clobber_test &&
5366     check_ldflags -Wl,--wrap,avcodec_open2              \
5367                   -Wl,--wrap,avcodec_decode_audio4      \
5368                   -Wl,--wrap,avcodec_decode_video2      \
5369                   -Wl,--wrap,avcodec_decode_subtitle2   \
5370                   -Wl,--wrap,avcodec_encode_audio2      \
5371                   -Wl,--wrap,avcodec_encode_video       \
5372                   -Wl,--wrap,avcodec_encode_video2      \
5373                   -Wl,--wrap,avcodec_encode_subtitle    \
5374                   -Wl,--wrap,swr_convert                \
5375                   -Wl,--wrap,avresample_convert         \
5376                   -Wl,--wrap,sws_scale ||
5377     disable xmm_clobber_test
5378
5379 echo "X{};" > $TMPV
5380 if test_ldflags -Wl,--version-script,$TMPV; then
5381     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5382     check_cc <<EOF && enable symver_asm_label
5383 void ff_foo(void) __asm__ ("av_foo@VERSION");
5384 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5385 EOF
5386     check_cc <<EOF && enable symver_gnu_asm
5387 __asm__(".symver ff_foo,av_foo@VERSION");
5388 void ff_foo(void) {}
5389 EOF
5390 fi
5391
5392 if [ -z "$optflags" ]; then
5393     if enabled small; then
5394         optflags=$cflags_size
5395     elif enabled optimizations; then
5396         optflags=$cflags_speed
5397     else
5398         optflags=$cflags_noopt
5399     fi
5400 fi
5401
5402 check_optflags(){
5403     check_cflags "$@"
5404     enabled lto && check_ldflags "$@"
5405 }
5406
5407
5408 if enabled lto; then
5409     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5410     check_cflags  -flto
5411     check_ldflags -flto $cpuflags
5412     disable inline_asm_direct_symbol_refs
5413 fi
5414
5415 check_optflags $optflags
5416 check_optflags -fno-math-errno
5417 check_optflags -fno-signed-zeros
5418
5419 enabled ftrapv && check_cflags -ftrapv
5420
5421 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5422 int x;
5423 EOF
5424
5425
5426 if enabled icc; then
5427     # Just warnings, no remarks
5428     check_cflags -w1
5429     # -wd: Disable following warnings
5430     # 144, 167, 556: -Wno-pointer-sign
5431     # 188: enumerated type mixed with another type
5432     # 1292: attribute "foo" ignored
5433     # 1419: external declaration in primary source file
5434     # 10006: ignoring unknown option -fno-signed-zeros
5435     # 10148: ignoring unknown option -Wno-parentheses
5436     # 10156: ignoring option '-W'; no argument required
5437     # 13200: No EMMS instruction before call to function
5438     # 13203: No EMMS instruction before return from function
5439     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5440     # 11030: Warning unknown option --as-needed
5441     # 10156: ignoring option '-export'; no argument required
5442     check_ldflags -wd10156,11030
5443     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5444     enable ebp_available
5445     # The test above does not test linking
5446     enabled lto && disable symver_asm_label
5447     if enabled x86_32; then
5448         icc_version=$($cc -dumpversion)
5449         test ${icc_version%%.*} -ge 11 &&
5450             check_cflags -falign-stack=maintain-16-byte ||
5451             disable aligned_stack
5452     fi
5453 elif enabled ccc; then
5454     # disable some annoying warnings
5455     add_cflags -msg_disable bitnotint
5456     add_cflags -msg_disable mixfuncvoid
5457     add_cflags -msg_disable nonstandcast
5458     add_cflags -msg_disable unsupieee
5459 elif enabled gcc; then
5460     check_optflags -fno-tree-vectorize
5461     check_cflags -Werror=format-security
5462     check_cflags -Werror=implicit-function-declaration
5463     check_cflags -Werror=missing-prototypes
5464     check_cflags -Werror=return-type
5465     check_cflags -Werror=vla
5466     check_cflags -Wformat
5467     check_cflags -fdiagnostics-color=auto
5468     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5469 elif enabled llvm_gcc; then
5470     check_cflags -mllvm -stack-alignment=16
5471 elif enabled clang; then
5472     check_cflags -mllvm -stack-alignment=16
5473     check_cflags -Qunused-arguments
5474     check_cflags -Werror=implicit-function-declaration
5475     check_cflags -Werror=missing-prototypes
5476     check_cflags -Werror=return-type
5477 elif enabled cparser; then
5478     add_cflags -Wno-missing-variable-declarations
5479     add_cflags -Wno-empty-statement
5480 elif enabled armcc; then
5481     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5482     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5483     # 2523: use of inline assembly is deprecated
5484     add_cflags -W${armcc_opt},--diag_suppress=2523
5485     add_cflags -W${armcc_opt},--diag_suppress=1207
5486     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5487     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5488     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5489     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5490 elif enabled tms470; then
5491     add_cflags -pds=824 -pds=837
5492     disable inline_asm
5493 elif enabled pathscale; then
5494     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5495 elif enabled_any msvc icl; then
5496     enabled x86_32 && disable aligned_stack
5497     enabled_all x86_32 debug && add_cflags -Oy-
5498     enabled debug && add_ldflags -debug
5499     enable pragma_deprecated
5500     if enabled icl; then
5501         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5502         # (correctly) on icl 13.x.
5503         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5504             add_cflags -Qansi-alias
5505         # Some inline asm is not compilable in debug
5506         if enabled debug; then
5507             disable ebp_available
5508             disable ebx_available
5509         fi
5510     fi
5511     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5512     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5513 fi
5514
5515 case $as_type in
5516     clang)
5517         add_asflags -Qunused-arguments
5518     ;;
5519 esac
5520
5521 case $ld_type in
5522     clang)
5523         check_ldflags -Qunused-arguments
5524     ;;
5525 esac
5526
5527 case $target_os in
5528     osf1)
5529         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5530     ;;
5531     plan9)
5532         add_cppflags -Dmain=plan9_main
5533     ;;
5534 esac
5535
5536 enable frame_thread_encoder
5537
5538 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5539
5540 check_deps $CONFIG_LIST       \
5541            $CONFIG_EXTRA      \
5542            $HAVE_LIST         \
5543            $ALL_COMPONENTS    \
5544
5545 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
5546
5547
5548 if test $target_os = "haiku"; then
5549     disable memalign
5550     disable posix_memalign
5551 fi
5552
5553 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5554     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5555     enable dxva2_lib
5556
5557 ! enabled_any memalign posix_memalign aligned_malloc &&
5558     enabled simd_align_16 && enable memalign_hack
5559
5560 # add_dep lib dep
5561 # -> enable ${lib}_deps_${dep}
5562 # -> add $dep to ${lib}_deps only once
5563 add_dep() {
5564     lib=$1
5565     dep=$2
5566     enabled "${lib}_deps_${dep}" && return 0
5567     enable  "${lib}_deps_${dep}"
5568     prepend "${lib}_deps" $dep
5569 }
5570
5571 # merge deps lib components
5572 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5573 merge_deps() {
5574     lib=$1
5575     shift
5576     for comp in $*; do
5577         enabled $comp || continue
5578         eval "dep=\"\$${comp}_deps\""
5579         for d in $dep; do
5580             add_dep $lib $d
5581         done
5582     done
5583 }
5584
5585 merge_deps libavfilter $FILTER_LIST
5586
5587 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5588
5589 for thread in $THREADS_LIST; do
5590     if enabled $thread; then
5591         test -n "$thread_type" &&
5592             die "ERROR: Only one thread type must be selected." ||
5593             thread_type="$thread"
5594     fi
5595 done
5596
5597 enabled zlib && add_cppflags -DZLIB_CONST
5598
5599 # conditional library dependencies, in linking order
5600 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5601 enabled aresample_filter    && prepend avfilter_deps "swresample"
5602 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5603 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5604 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5605 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5606 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5607 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5608 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5609 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5610 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5611 enabled pan_filter          && prepend avfilter_deps "swresample"
5612 enabled pp_filter           && prepend avfilter_deps "postproc"
5613 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5614 enabled resample_filter && prepend avfilter_deps "avresample"
5615 enabled sab_filter          && prepend avfilter_deps "swscale"
5616 enabled scale_filter    && prepend avfilter_deps "swscale"
5617 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5618 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5619 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5620 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5621
5622 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5623
5624 enabled opus_decoder    && prepend avcodec_deps "swresample"
5625
5626 expand_deps(){
5627     lib_deps=${1}_deps
5628     eval "deps=\$$lib_deps"
5629     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5630     unique $lib_deps
5631 }
5632
5633 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5634 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5635
5636 map 'expand_deps $v' $LIBRARY_LIST
5637
5638 echo "install prefix            $prefix"
5639 echo "source path               $source_path"
5640 echo "C compiler                $cc"
5641 echo "C library                 $libc_type"
5642 if test "$host_cc" != "$cc"; then
5643     echo "host C compiler           $host_cc"
5644     echo "host C library            $host_libc_type"
5645 fi
5646 echo "ARCH                      $arch ($cpu)"
5647 if test "$build_suffix" != ""; then
5648     echo "build suffix              $build_suffix"
5649 fi
5650 if test "$progs_suffix" != ""; then
5651     echo "progs suffix              $progs_suffix"
5652 fi
5653 if test "$extra_version" != ""; then
5654     echo "version string suffix     $extra_version"
5655 fi
5656 echo "big-endian                ${bigendian-no}"
5657 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5658 if enabled x86; then
5659     echo "${yasmexe}                      ${yasm-no}"
5660     echo "MMX enabled               ${mmx-no}"
5661     echo "MMXEXT enabled            ${mmxext-no}"
5662     echo "3DNow! enabled            ${amd3dnow-no}"
5663     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5664     echo "SSE enabled               ${sse-no}"
5665     echo "SSSE3 enabled             ${ssse3-no}"
5666     echo "AVX enabled               ${avx-no}"
5667     echo "XOP enabled               ${xop-no}"
5668     echo "FMA3 enabled              ${fma3-no}"
5669     echo "FMA4 enabled              ${fma4-no}"
5670     echo "i686 features enabled     ${i686-no}"
5671     echo "CMOV is fast              ${fast_cmov-no}"
5672     echo "EBX available             ${ebx_available-no}"
5673     echo "EBP available             ${ebp_available-no}"
5674 fi
5675 if enabled aarch64; then
5676     echo "NEON enabled              ${neon-no}"
5677     echo "VFP enabled               ${vfp-no}"
5678 fi
5679 if enabled arm; then
5680     echo "ARMv5TE enabled           ${armv5te-no}"
5681     echo "ARMv6 enabled             ${armv6-no}"
5682     echo "ARMv6T2 enabled           ${armv6t2-no}"
5683     echo "VFP enabled               ${vfp-no}"
5684     echo "NEON enabled              ${neon-no}"
5685     echo "THUMB enabled             ${thumb-no}"
5686 fi
5687 if enabled mips; then
5688     echo "MIPS FPU enabled          ${mipsfpu-no}"
5689     echo "MIPS32R5 enabled          ${mips32r5-no}"
5690     echo "MIPS64R6 enabled          ${mips64r6-no}"
5691     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5692     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5693     echo "MIPS MSA enabled          ${msa-no}"
5694     echo "LOONGSON3 enabled         ${loongson3-no}"
5695 fi
5696 if enabled ppc; then
5697     echo "AltiVec enabled           ${altivec-no}"
5698     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5699     echo "PPC VSX optimizations     ${vsx-no}"
5700     echo "dcbzl available           ${dcbzl-no}"
5701 fi
5702 echo "debug symbols             ${debug-no}"
5703 echo "strip symbols             ${stripping-no}"
5704 echo "optimize for size         ${small-no}"
5705 echo "optimizations             ${optimizations-no}"
5706 echo "static                    ${static-no}"
5707 echo "shared                    ${shared-no}"
5708 echo "postprocessing support    ${postproc-no}"
5709 echo "new filter support        ${avfilter-no}"
5710 echo "network support           ${network-no}"
5711 echo "threading support         ${thread_type-no}"
5712 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5713 echo "SDL support               ${sdl-no}"
5714 echo "opencl enabled            ${opencl-no}"
5715 echo "texi2html enabled         ${texi2html-no}"
5716 echo "perl enabled              ${perl-no}"
5717 echo "pod2man enabled           ${pod2man-no}"
5718 echo "makeinfo enabled          ${makeinfo-no}"
5719 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5720 test -n "$random_seed" &&
5721     echo "random seed               ${random_seed}"
5722 echo
5723
5724 echo "External libraries:"
5725 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5726 echo
5727
5728 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5729     echo "Enabled ${type}s:"
5730     eval list=\$$(toupper $type)_LIST
5731     print_enabled '_*' $list | print_3_columns
5732     echo
5733 done
5734
5735 license="LGPL version 2.1 or later"
5736 if enabled nonfree; then
5737     license="nonfree and unredistributable"
5738 elif enabled gplv3; then
5739     license="GPL version 3 or later"
5740 elif enabled lgplv3; then
5741     license="LGPL version 3 or later"
5742 elif enabled gpl; then
5743     license="GPL version 2 or later"
5744 fi
5745
5746 echo "License: $license"
5747
5748 echo "Creating config.mak, config.h, and doc/config.texi..."
5749
5750 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5751
5752 enabled stripping || strip="echo skipping strip"
5753
5754 config_files="$TMPH config.mak doc/config.texi"
5755
5756 cat > config.mak <<EOF
5757 # Automatically generated by configure - do not modify!
5758 ifndef FFMPEG_CONFIG_MAK
5759 FFMPEG_CONFIG_MAK=1
5760 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5761 prefix=$prefix
5762 LIBDIR=\$(DESTDIR)$libdir
5763 SHLIBDIR=\$(DESTDIR)$shlibdir
5764 INCDIR=\$(DESTDIR)$incdir
5765 BINDIR=\$(DESTDIR)$bindir
5766 DATADIR=\$(DESTDIR)$datadir
5767 DOCDIR=\$(DESTDIR)$docdir
5768 MANDIR=\$(DESTDIR)$mandir
5769 SRC_PATH=$source_path
5770 ifndef MAIN_MAKEFILE
5771 SRC_PATH:=\$(SRC_PATH:.%=..%)
5772 endif
5773 CC_IDENT=$cc_ident
5774 ARCH=$arch
5775 INTRINSICS=$intrinsics
5776 CC=$cc
5777 CXX=$cxx
5778 AS=$as
5779 LD=$ld
5780 DEPCC=$dep_cc
5781 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5782 DEPAS=$as
5783 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5784 YASM=$yasmexe
5785 DEPYASM=$yasmexe
5786 AR=$ar
5787 ARFLAGS=$arflags
5788 AR_O=$ar_o
5789 RANLIB=$ranlib
5790 STRIP=$strip
5791 CP=cp -p
5792 LN_S=$ln_s
5793 CPPFLAGS=$CPPFLAGS
5794 CFLAGS=$CFLAGS
5795 CXXFLAGS=$CXXFLAGS
5796 ASFLAGS=$ASFLAGS
5797 AS_C=$AS_C
5798 AS_O=$AS_O
5799 CC_C=$CC_C
5800 CC_E=$CC_E
5801 CC_O=$CC_O
5802 CXX_C=$CXX_C
5803 CXX_O=$CXX_O
5804 LD_O=$LD_O
5805 LD_LIB=$LD_LIB
5806 LD_PATH=$LD_PATH
5807 DLLTOOL=$dlltool
5808 WINDRES=$windres
5809 DEPWINDRES=$dep_cc
5810 DOXYGEN=$doxygen
5811 LDFLAGS=$LDFLAGS
5812 LDEXEFLAGS=$LDEXEFLAGS
5813 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5814 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5815 YASMFLAGS=$YASMFLAGS
5816 BUILDSUF=$build_suffix
5817 PROGSSUF=$progs_suffix
5818 FULLNAME=$FULLNAME
5819 LIBPREF=$LIBPREF
5820 LIBSUF=$LIBSUF
5821 LIBNAME=$LIBNAME
5822 SLIBPREF=$SLIBPREF
5823 SLIBSUF=$SLIBSUF
5824 EXESUF=$EXESUF
5825 EXTRA_VERSION=$extra_version
5826 CCDEP=$CCDEP
5827 CXXDEP=$CXXDEP
5828 CCDEP_FLAGS=$CCDEP_FLAGS
5829 ASDEP=$ASDEP
5830 ASDEP_FLAGS=$ASDEP_FLAGS
5831 CC_DEPFLAGS=$CC_DEPFLAGS
5832 AS_DEPFLAGS=$AS_DEPFLAGS
5833 HOSTCC=$host_cc
5834 HOSTLD=$host_ld
5835 HOSTCFLAGS=$host_cflags
5836 HOSTCPPFLAGS=$host_cppflags
5837 HOSTEXESUF=$HOSTEXESUF
5838 HOSTLDFLAGS=$host_ldflags
5839 HOSTLIBS=$host_libs
5840 DEPHOSTCC=$host_cc
5841 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5842 HOSTCCDEP=$HOSTCCDEP
5843 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5844 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5845 HOSTCC_C=$HOSTCC_C
5846 HOSTCC_O=$HOSTCC_O
5847 HOSTLD_O=$HOSTLD_O
5848 TARGET_EXEC=$target_exec $target_exec_args
5849 TARGET_PATH=$target_path
5850 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5851 CFLAGS-ffplay=$sdl_cflags
5852 ZLIB=$($ldflags_filter -lz)
5853 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5854 EXTRALIBS=$extralibs
5855 COMPAT_OBJS=$compat_objs
5856 EXEOBJS=$exeobjs
5857 INSTALL=$install
5858 LIBTARGET=${LIBTARGET}
5859 SLIBNAME=${SLIBNAME}
5860 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5861 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5862 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5863 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5864 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5865 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5866 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5867 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5868 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5869 NOREDZONE_FLAGS=$noredzone_flags
5870 EOF
5871
5872 get_version(){
5873     lcname=lib${1}
5874     name=$(toupper $lcname)
5875     file=$source_path/$lcname/version.h
5876     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5877     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5878     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5879     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5880     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5881     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5882 }
5883
5884 map 'get_version $v' $LIBRARY_LIST
5885
5886 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5887
5888 print_program_libs(){
5889     eval "program_libs=\$${1}_libs"
5890     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5891 }
5892
5893 map 'print_program_libs $v' $PROGRAM_LIST
5894
5895 cat > $TMPH <<EOF
5896 /* Automatically generated by configure - do not modify! */
5897 #ifndef FFMPEG_CONFIG_H
5898 #define FFMPEG_CONFIG_H
5899 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5900 #define FFMPEG_LICENSE "$(c_escape $license)"
5901 #define CONFIG_THIS_YEAR 2015
5902 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5903 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5904 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5905 #define av_restrict $_restrict
5906 #define EXTERN_PREFIX "${extern_prefix}"
5907 #define EXTERN_ASM ${extern_prefix}
5908 #define BUILDSUF "$build_suffix"
5909 #define SLIBSUF "$SLIBSUF"
5910 #define HAVE_MMX2 HAVE_MMXEXT
5911 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5912 EOF
5913
5914 test -n "$assert_level" &&
5915     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5916
5917 test -n "$malloc_prefix" &&
5918     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5919
5920 if enabled yasm; then
5921     append config_files $TMPASM
5922     printf '' >$TMPASM
5923 fi
5924
5925 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5926
5927
5928 mkdir -p doc
5929 mkdir -p tests
5930 echo "@c auto-generated by configure" > doc/config.texi
5931
5932 print_config ARCH_   "$config_files" $ARCH_LIST
5933 print_config HAVE_   "$config_files" $HAVE_LIST
5934 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5935                                      $CONFIG_EXTRA      \
5936                                      $ALL_COMPONENTS    \
5937
5938 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5939 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5940
5941 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5942 cp_if_changed $TMPH config.h
5943 touch .config
5944
5945 enabled yasm && cp_if_changed $TMPASM config.asm
5946
5947 cat > $TMPH <<EOF
5948 /* Generated by ffconf */
5949 #ifndef AVUTIL_AVCONFIG_H
5950 #define AVUTIL_AVCONFIG_H
5951 EOF
5952
5953 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5954
5955 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5956
5957 cp_if_changed $TMPH libavutil/avconfig.h
5958
5959 if test -n "$WARNINGS"; then
5960     printf "\n$WARNINGS"
5961     enabled fatal_warnings && exit 1
5962 fi
5963
5964 # build pkg-config files
5965
5966 lib_version(){
5967     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5968 }
5969
5970 pkgconfig_generate(){
5971     name=$1
5972     shortname=${name#lib}${build_suffix}
5973     comment=$2
5974     version=$3
5975     libs=$4
5976     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5977     requires=${requires%, }
5978     enabled ${name#lib} || return 0
5979     mkdir -p $name
5980     cat <<EOF > $name/$name${build_suffix}.pc
5981 prefix=$prefix
5982 exec_prefix=\${prefix}
5983 libdir=$libdir
5984 includedir=$incdir
5985
5986 Name: $name
5987 Description: $comment
5988 Version: $version
5989 Requires: $(enabled shared || echo $requires)
5990 Requires.private: $(enabled shared && echo $requires)
5991 Conflicts:
5992 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5993 Libs.private: $(enabled shared && echo $libs)
5994 Cflags: -I\${includedir}
5995 EOF
5996
5997 mkdir -p doc/examples/pc-uninstalled
5998 includedir=${source_path}
5999 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6000     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6001 prefix=
6002 exec_prefix=
6003 libdir=\${pcfiledir}/../../../$name
6004 includedir=${includedir}
6005
6006 Name: $name
6007 Description: $comment
6008 Version: $version
6009 Requires: $requires
6010 Conflicts:
6011 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6012 Cflags: -I\${includedir}
6013 EOF
6014 }
6015
6016 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6017 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6018 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6019 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6020 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6021 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6022 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6023 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6024 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"