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 libx264_encoder_deps="libx264"
2455 libx264rgb_encoder_deps="libx264"
2456 libx264rgb_encoder_select="libx264_encoder"
2457 libx265_encoder_deps="libx265"
2458 libxavs_encoder_deps="libxavs"
2459 libxvid_encoder_deps="libxvid"
2460 libutvideo_decoder_deps="libutvideo"
2461 libutvideo_encoder_deps="libutvideo"
2462 libzvbi_teletext_decoder_deps="libzvbi"
2463 nvenc_encoder_deps="nvenc"
2464 nvenc_h265_encoder_deps="nvenc"
2465
2466 # demuxers / muxers
2467 ac3_demuxer_select="ac3_parser"
2468 asf_demuxer_select="riffdec"
2469 asf_muxer_select="riffenc"
2470 asf_stream_muxer_select="asf_muxer"
2471 avi_demuxer_select="riffdec exif"
2472 avi_muxer_select="riffenc"
2473 avisynth_demuxer_deps="avisynth"
2474 avisynth_demuxer_select="riffdec"
2475 caf_demuxer_select="riffdec"
2476 dash_muxer_select="mp4_muxer"
2477 dirac_demuxer_select="dirac_parser"
2478 dts_demuxer_select="dca_parser"
2479 dtshd_demuxer_select="dca_parser"
2480 dv_demuxer_select="dvprofile"
2481 dv_muxer_select="dvprofile"
2482 dxa_demuxer_select="riffdec"
2483 eac3_demuxer_select="ac3_parser"
2484 f4v_muxer_select="mov_muxer"
2485 flac_demuxer_select="flac_parser"
2486 hds_muxer_select="flv_muxer"
2487 hls_muxer_select="mpegts_muxer"
2488 image2_alias_pix_demuxer_select="image2_demuxer"
2489 image2_brender_pix_demuxer_select="image2_demuxer"
2490 ipod_muxer_select="mov_muxer"
2491 ismv_muxer_select="mov_muxer"
2492 libnut_demuxer_deps="libnut"
2493 libnut_muxer_deps="libnut"
2494 matroska_audio_muxer_select="matroska_muxer"
2495 matroska_demuxer_select="riffdec"
2496 matroska_demuxer_suggest="bzlib lzo zlib"
2497 matroska_muxer_select="riffenc"
2498 mmf_muxer_select="riffenc"
2499 mov_demuxer_select="riffdec"
2500 mov_demuxer_suggest="zlib"
2501 mov_muxer_select="riffenc rtpenc_chain"
2502 mp3_demuxer_select="mpegaudio_parser"
2503 mp4_muxer_select="mov_muxer"
2504 mpegts_muxer_select="adts_muxer latm_muxer"
2505 mpegtsraw_demuxer_select="mpegts_demuxer"
2506 mxf_d10_muxer_select="mxf_muxer"
2507 mxf_opatom_muxer_select="mxf_muxer"
2508 nut_muxer_select="riffenc"
2509 nuv_demuxer_select="riffdec"
2510 oga_muxer_select="ogg_muxer"
2511 ogg_demuxer_select="golomb"
2512 opus_muxer_select="ogg_muxer"
2513 psp_muxer_select="mov_muxer"
2514 rtp_demuxer_select="sdp_demuxer"
2515 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2516 rtsp_demuxer_select="http_protocol rtpdec"
2517 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2518 sap_demuxer_select="sdp_demuxer"
2519 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2520 sdp_demuxer_select="rtpdec"
2521 smoothstreaming_muxer_select="ismv_muxer"
2522 spdif_muxer_select="aac_parser"
2523 spx_muxer_select="ogg_muxer"
2524 tak_demuxer_select="tak_parser"
2525 tg2_muxer_select="mov_muxer"
2526 tgp_muxer_select="mov_muxer"
2527 vobsub_demuxer_select="mpegps_demuxer"
2528 w64_demuxer_select="wav_demuxer"
2529 w64_muxer_select="wav_muxer"
2530 wav_demuxer_select="riffdec"
2531 wav_muxer_select="riffenc"
2532 webm_muxer_select="riffenc"
2533 wtv_demuxer_select="riffdec"
2534 wtv_muxer_select="riffenc"
2535 xmv_demuxer_select="riffdec"
2536 xwma_demuxer_select="riffdec"
2537
2538 # indevs / outdevs
2539 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2540 alsa_outdev_deps="alsa_asoundlib_h"
2541 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2542 avfoundation_indev_select="avfoundation"
2543 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2544 caca_outdev_deps="libcaca"
2545 decklink_outdev_deps="decklink pthreads"
2546 decklink_outdev_extralibs="-lstdc++"
2547 decklink_indev_deps="decklink pthreads"
2548 decklink_indev_extralibs="-lstdc++"
2549 dshow_indev_deps="IBaseFilter"
2550 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2551 dv1394_indev_deps="dv1394"
2552 dv1394_indev_select="dv_demuxer"
2553 fbdev_indev_deps="linux_fb_h"
2554 fbdev_outdev_deps="linux_fb_h"
2555 gdigrab_indev_deps="CreateDIBSection"
2556 gdigrab_indev_extralibs="-lgdi32"
2557 gdigrab_indev_select="bmp_decoder"
2558 iec61883_indev_deps="libiec61883"
2559 jack_indev_deps="jack_jack_h sem_timedwait"
2560 lavfi_indev_deps="avfilter"
2561 libcdio_indev_deps="libcdio"
2562 libdc1394_indev_deps="libdc1394"
2563 libv4l2_indev_deps="libv4l2"
2564 openal_indev_deps="openal"
2565 opengl_outdev_deps="opengl"
2566 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2567 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2568 pulse_indev_deps="libpulse"
2569 pulse_outdev_deps="libpulse"
2570 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2571 qtkit_indev_select="qtkit"
2572 sdl_outdev_deps="sdl"
2573 sndio_indev_deps="sndio_h"
2574 sndio_outdev_deps="sndio_h"
2575 v4l_indev_deps="linux_videodev_h"
2576 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2577 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2578 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2579 vfwcap_indev_extralibs="-lavicap32"
2580 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2581 xv_outdev_extralibs="-lXv -lX11 -lXext"
2582 x11grab_indev_deps="x11grab"
2583 x11grab_xcb_indev_deps="libxcb"
2584
2585 # protocols
2586 bluray_protocol_deps="libbluray"
2587 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2588 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2589 ffrtmpcrypt_protocol_select="tcp_protocol"
2590 ffrtmphttp_protocol_deps="!librtmp_protocol"
2591 ffrtmphttp_protocol_select="http_protocol"
2592 ftp_protocol_select="tcp_protocol"
2593 gopher_protocol_select="network"
2594 http_protocol_select="tcp_protocol"
2595 httpproxy_protocol_select="tcp_protocol"
2596 https_protocol_select="tls_protocol"
2597 icecast_protocol_select="http_protocol"
2598 librtmp_protocol_deps="librtmp"
2599 librtmpe_protocol_deps="librtmp"
2600 librtmps_protocol_deps="librtmp"
2601 librtmpt_protocol_deps="librtmp"
2602 librtmpte_protocol_deps="librtmp"
2603 libsmbclient_protocol_deps="libsmbclient gplv3"
2604 libssh_protocol_deps="libssh"
2605 mmsh_protocol_select="http_protocol"
2606 mmst_protocol_select="network"
2607 rtmp_protocol_deps="!librtmp_protocol"
2608 rtmp_protocol_select="tcp_protocol"
2609 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2610 rtmps_protocol_deps="!librtmp_protocol"
2611 rtmps_protocol_select="tls_protocol"
2612 rtmpt_protocol_select="ffrtmphttp_protocol"
2613 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2614 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2615 rtp_protocol_select="udp_protocol"
2616 sctp_protocol_deps="struct_sctp_event_subscribe"
2617 sctp_protocol_select="network"
2618 srtp_protocol_select="rtp_protocol"
2619 tcp_protocol_select="network"
2620 tls_protocol_deps_any="openssl gnutls"
2621 tls_protocol_select="tcp_protocol"
2622 udp_protocol_select="network"
2623 udplite_protocol_select="network"
2624 unix_protocol_deps="sys_un_h"
2625 unix_protocol_select="network"
2626
2627 # filters
2628 amovie_filter_deps="avcodec avformat"
2629 aresample_filter_deps="swresample"
2630 ass_filter_deps="libass"
2631 asyncts_filter_deps="avresample"
2632 atempo_filter_deps="avcodec"
2633 atempo_filter_select="rdft"
2634 azmq_filter_deps="libzmq"
2635 blackframe_filter_deps="gpl"
2636 boxblur_filter_deps="gpl"
2637 bs2b_filter_deps="libbs2b"
2638 colormatrix_filter_deps="gpl"
2639 cover_rect_filter_deps="avcodec avformat gpl"
2640 cropdetect_filter_deps="gpl"
2641 delogo_filter_deps="gpl"
2642 deshake_filter_select="pixelutils"
2643 drawtext_filter_deps="libfreetype"
2644 ebur128_filter_deps="gpl"
2645 eq_filter_deps="gpl"
2646 fftfilt_filter_deps="avcodec"
2647 fftfilt_filter_select="rdft"
2648 flite_filter_deps="libflite"
2649 find_rect_filter_deps="avcodec avformat gpl"
2650 frei0r_filter_deps="frei0r dlopen"
2651 frei0r_src_filter_deps="frei0r dlopen"
2652 fspp_filter_deps="gpl"
2653 geq_filter_deps="gpl"
2654 histeq_filter_deps="gpl"
2655 hqdn3d_filter_deps="gpl"
2656 interlace_filter_deps="gpl"
2657 kerndeint_filter_deps="gpl"
2658 ladspa_filter_deps="ladspa dlopen"
2659 mcdeint_filter_deps="avcodec gpl"
2660 movie_filter_deps="avcodec avformat"
2661 mpdecimate_filter_deps="gpl"
2662 mpdecimate_filter_select="pixelutils"
2663 mptestsrc_filter_deps="gpl"
2664 negate_filter_deps="lut_filter"
2665 perspective_filter_deps="gpl"
2666 pp7_filter_deps="gpl"
2667 ocv_filter_deps="libopencv"
2668 owdenoise_filter_deps="gpl"
2669 pan_filter_deps="swresample"
2670 phase_filter_deps="gpl"
2671 pp_filter_deps="gpl postproc"
2672 pullup_filter_deps="gpl"
2673 removelogo_filter_deps="avcodec avformat swscale"
2674 repeatfields_filter_deps="gpl"
2675 resample_filter_deps="avresample"
2676 sab_filter_deps="gpl swscale"
2677 scale_filter_deps="swscale"
2678 select_filter_select="pixelutils"
2679 smartblur_filter_deps="gpl swscale"
2680 showspectrum_filter_deps="avcodec"
2681 showspectrum_filter_select="rdft"
2682 spp_filter_deps="gpl avcodec"
2683 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2684 stereo3d_filter_deps="gpl"
2685 subtitles_filter_deps="avformat avcodec libass"
2686 super2xsai_filter_deps="gpl"
2687 tinterlace_filter_deps="gpl"
2688 vidstabdetect_filter_deps="libvidstab"
2689 vidstabtransform_filter_deps="libvidstab"
2690 pixfmts_super2xsai_test_deps="super2xsai_filter"
2691 tinterlace_merge_test_deps="tinterlace_filter"
2692 tinterlace_pad_test_deps="tinterlace_filter"
2693 uspp_filter_deps="gpl avcodec"
2694 zmq_filter_deps="libzmq"
2695 zoompan_filter_deps="swscale"
2696
2697 # examples
2698 avio_reading="avformat avcodec avutil"
2699 avio_list_dir="avformat avutil"
2700 avcodec_example_deps="avcodec avutil"
2701 decoding_encoding_example_deps="avcodec avformat avutil"
2702 demuxing_decoding_example_deps="avcodec avformat avutil"
2703 extract_mvs_example_deps="avcodec avformat avutil"
2704 filter_audio_example_deps="avfilter avutil"
2705 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2706 filtering_video_example_deps="avfilter avcodec avformat avutil"
2707 metadata_example_deps="avformat avutil"
2708 muxing_example_deps="avcodec avformat avutil swscale"
2709 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2710 remuxing_example_deps="avcodec avformat avutil"
2711 resampling_audio_example_deps="avutil swresample"
2712 scaling_video_example_deps="avutil swscale"
2713 transcode_aac_example_deps="avcodec avformat swresample"
2714 transcoding_example_deps="avfilter avcodec avformat avutil"
2715
2716 # libraries, in linking order
2717 avcodec_deps="avutil"
2718 avdevice_deps="avformat avcodec avutil"
2719 avfilter_deps="avutil"
2720 avformat_deps="avcodec avutil"
2721 avresample_deps="avutil"
2722 postproc_deps="avutil gpl"
2723 swresample_deps="avutil"
2724 swscale_deps="avutil"
2725
2726 # programs
2727 ffmpeg_deps="avcodec avfilter avformat swresample"
2728 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2729                null_filter
2730                setpts_filter trim_filter"
2731 ffplay_deps="avcodec avformat swscale swresample sdl"
2732 ffplay_libs='$sdl_libs'
2733 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2734 ffprobe_deps="avcodec avformat"
2735 ffserver_deps="avformat fork sarestart"
2736 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2737
2738 # documentation
2739 podpages_deps="perl"
2740 manpages_deps="perl pod2man"
2741 htmlpages_deps="perl"
2742 htmlpages_deps_any="makeinfo_html texi2html"
2743 txtpages_deps="perl makeinfo"
2744 doc_deps_any="manpages htmlpages podpages txtpages"
2745
2746 # default parameters
2747
2748 logfile="config.log"
2749
2750 # installation paths
2751 prefix_default="/usr/local"
2752 bindir_default='${prefix}/bin'
2753 datadir_default='${prefix}/share/ffmpeg'
2754 docdir_default='${prefix}/share/doc/ffmpeg'
2755 incdir_default='${prefix}/include'
2756 libdir_default='${prefix}/lib'
2757 mandir_default='${prefix}/share/man'
2758
2759 # toolchain
2760 ar_default="ar"
2761 cc_default="gcc"
2762 cxx_default="g++"
2763 host_cc_default="gcc"
2764 cp_f="cp -f"
2765 doxygen_default="doxygen"
2766 install="install"
2767 ln_s="ln -s -f"
2768 nm_default="nm -g"
2769 objformat="elf"
2770 pkg_config_default=pkg-config
2771 if ranlib 2>&1 | grep -q "\-D "; then
2772     ranlib_default="ranlib -D"
2773 else
2774     ranlib_default="ranlib"
2775 fi
2776 strip_default="strip"
2777 yasmexe_default="yasm"
2778 windres_default="windres"
2779
2780 # OS
2781 target_os_default=$(tolower $(uname -s))
2782 host_os=$target_os_default
2783
2784 # machine
2785 if test "$target_os_default" = aix; then
2786     arch_default=$(uname -p)
2787     strip_default="strip -X32_64"
2788 else
2789     arch_default=$(uname -m)
2790 fi
2791 cpu="generic"
2792 intrinsics="none"
2793
2794 # configurable options
2795 enable $PROGRAM_LIST
2796 enable $DOCUMENT_LIST
2797 enable $EXAMPLE_LIST
2798 enable $(filter_out avresample $LIBRARY_LIST)
2799 enable stripping
2800
2801 enable asm
2802 enable debug
2803 enable doc
2804 enable faan faandct faanidct
2805 enable optimizations
2806 enable runtime_cpudetect
2807 enable safe_bitstream_reader
2808 enable static
2809 enable swscale_alpha
2810 enable valgrind_backtrace
2811
2812 sws_max_filter_size_default=256
2813 set_default sws_max_filter_size
2814
2815 # Enable hwaccels by default.
2816 enable dxva2 vaapi vda vdpau xvmc
2817 enable xlib
2818
2819 # build settings
2820 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2821 LIBPREF="lib"
2822 LIBSUF=".a"
2823 FULLNAME='$(NAME)$(BUILDSUF)'
2824 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2825 SLIBPREF="lib"
2826 SLIBSUF=".so"
2827 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2828 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2829 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2830 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2831 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2832 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2833
2834 asflags_filter=echo
2835 cflags_filter=echo
2836 ldflags_filter=echo
2837
2838 AS_C='-c'
2839 AS_O='-o $@'
2840 CC_C='-c'
2841 CC_E='-E -o $@'
2842 CC_O='-o $@'
2843 CXX_C='-c'
2844 CXX_O='-o $@'
2845 LD_O='-o $@'
2846 LD_LIB='-l%'
2847 LD_PATH='-L'
2848 HOSTCC_C='-c'
2849 HOSTCC_E='-E -o $@'
2850 HOSTCC_O='-o $@'
2851 HOSTLD_O='-o $@'
2852
2853 host_libs='-lm'
2854 host_cflags_filter=echo
2855 host_ldflags_filter=echo
2856
2857 target_path='$(CURDIR)'
2858
2859 # since the object filename is not given with the -MM flag, the compiler
2860 # is only able to print the basename, and we must add the path ourselves
2861 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2862 DEPFLAGS='-MM'
2863
2864 # find source path
2865 if test -f configure; then
2866     source_path=.
2867 else
2868     source_path=$(cd $(dirname "$0"); pwd)
2869     echo "$source_path" | grep -q '[[:blank:]]' &&
2870         die "Out of tree builds are impossible with whitespace in source path."
2871     test -e "$source_path/config.h" &&
2872         die "Out of tree builds are impossible with config.h in source dir."
2873 fi
2874
2875 for v in "$@"; do
2876     r=${v#*=}
2877     l=${v%"$r"}
2878     r=$(sh_quote "$r")
2879     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2880 done
2881
2882 find_things(){
2883     thing=$1
2884     pattern=$2
2885     file=$source_path/$3
2886     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2887 }
2888
2889 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2890 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2891 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2892 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2893 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2894 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2895 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2896 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2897 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2898 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2899 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2900
2901 ALL_COMPONENTS="
2902     $BSF_LIST
2903     $DECODER_LIST
2904     $DEMUXER_LIST
2905     $ENCODER_LIST
2906     $FILTER_LIST
2907     $HWACCEL_LIST
2908     $INDEV_LIST
2909     $MUXER_LIST
2910     $OUTDEV_LIST
2911     $PARSER_LIST
2912     $PROTOCOL_LIST
2913 "
2914
2915 for n in $COMPONENT_LIST; do
2916     v=$(toupper ${n%s})_LIST
2917     eval enable \$$v
2918     eval ${n}_if_any="\$$v"
2919 done
2920
2921 enable $ARCH_EXT_LIST
2922
2923 die_unknown(){
2924     echo "Unknown option \"$1\"."
2925     echo "See $0 --help for available options."
2926     exit 1
2927 }
2928
2929 print_3_columns() {
2930     cat | tr ' ' '\n' | sort | pr -r -3 -t
2931 }
2932
2933 show_list() {
2934     suffix=_$1
2935     shift
2936     echo $* | sed s/$suffix//g | print_3_columns
2937     exit 0
2938 }
2939
2940 rand_list(){
2941     IFS=', '
2942     set -- $*
2943     unset IFS
2944     for thing; do
2945         comp=${thing%:*}
2946         prob=${thing#$comp}
2947         prob=${prob#:}
2948         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2949         echo "prob ${prob:-0.5}"
2950         printf '%s\n' $comp
2951     done
2952 }
2953
2954 do_random(){
2955     action=$1
2956     shift
2957     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2958     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2959 }
2960
2961 for opt do
2962     optval="${opt#*=}"
2963     case "$opt" in
2964         --extra-ldflags=*)
2965             add_ldflags $optval
2966         ;;
2967         --extra-ldexeflags=*)
2968             add_ldexeflags $optval
2969         ;;
2970         --extra-libs=*)
2971             add_extralibs $optval
2972         ;;
2973         --disable-devices)
2974             disable $INDEV_LIST $OUTDEV_LIST
2975         ;;
2976         --enable-debug=*)
2977             debuglevel="$optval"
2978         ;;
2979         --disable-programs)
2980             disable $PROGRAM_LIST
2981         ;;
2982         --disable-everything)
2983             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2984         ;;
2985         --disable-all)
2986             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2987             disable $LIBRARY_LIST $PROGRAM_LIST doc
2988         ;;
2989         --enable-random|--disable-random)
2990             action=${opt%%-random}
2991             do_random ${action#--} $COMPONENT_LIST
2992         ;;
2993         --enable-random=*|--disable-random=*)
2994             action=${opt%%-random=*}
2995             do_random ${action#--} $optval
2996         ;;
2997         --enable-*=*|--disable-*=*)
2998             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2999             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3000             eval list=\$$(toupper $thing)_LIST
3001             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3002             list=$(filter "$name" $list)
3003             [ "$list" = "" ] && warn "Option $opt did not match anything"
3004             $action $list
3005         ;;
3006         --enable-?*|--disable-?*)
3007             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3008             if is_in $option $COMPONENT_LIST; then
3009                 test $action = disable && action=unset
3010                 eval $action \$$(toupper ${option%s})_LIST
3011             elif is_in $option $CMDLINE_SELECT; then
3012                 $action $option
3013             else
3014                 die_unknown $opt
3015             fi
3016         ;;
3017         --list-*)
3018             NAME="${opt#--list-}"
3019             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3020             NAME=${NAME%s}
3021             eval show_list $NAME \$$(toupper $NAME)_LIST
3022         ;;
3023         --help|-h) show_help
3024         ;;
3025         --fatal-warnings) enable fatal_warnings
3026         ;;
3027         *)
3028             optname="${opt%%=*}"
3029             optname="${optname#--}"
3030             optname=$(echo "$optname" | sed 's/-/_/g')
3031             if is_in $optname $CMDLINE_SET; then
3032                 eval $optname='$optval'
3033             elif is_in $optname $CMDLINE_APPEND; then
3034                 append $optname "$optval"
3035             else
3036                 die_unknown $opt
3037             fi
3038         ;;
3039     esac
3040 done
3041
3042 disabled logging && logfile=/dev/null
3043
3044 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3045 set >> $logfile
3046
3047 test -n "$valgrind" && toolchain="valgrind-memcheck"
3048
3049 case "$toolchain" in
3050     clang-asan)
3051         cc_default="clang"
3052         add_cflags  -fsanitize=address
3053         add_ldflags -fsanitize=address
3054     ;;
3055     clang-tsan)
3056         cc_default="clang"
3057         add_cflags  -fsanitize=thread -pie
3058         add_ldflags -fsanitize=thread -pie
3059     ;;
3060     clang-usan)
3061         cc_default="clang"
3062         add_cflags  -fsanitize=undefined
3063         add_ldflags -fsanitize=undefined
3064     ;;
3065     gcc-asan)
3066         cc_default="gcc"
3067         add_cflags  -fsanitize=address
3068         add_ldflags -fsanitize=address
3069     ;;
3070     gcc-tsan)
3071         cc_default="gcc"
3072         add_cflags  -fsanitize=thread -pie -fPIC
3073         add_ldflags -fsanitize=thread -pie -fPIC
3074     ;;
3075     gcc-usan)
3076         cc_default="gcc"
3077         add_cflags  -fsanitize=undefined
3078         add_ldflags -fsanitize=undefined
3079     ;;
3080     valgrind-massif)
3081         target_exec_default=${valgrind:-"valgrind"}
3082         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"
3083     ;;
3084     valgrind-memcheck)
3085         target_exec_default=${valgrind:-"valgrind"}
3086         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3087     ;;
3088     msvc)
3089         # Check whether the current MSVC version needs the C99 converter.
3090         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3091         # support enough of C99 to build ffmpeg. Default to the new
3092         # behaviour if the regexp was unable to match anything, since this
3093         # successfully parses the version number of existing supported
3094         # versions that require the converter (MSVC 2010 and 2012).
3095         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3096         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3097             cc_default="cl"
3098         else
3099             cc_default="c99wrap cl"
3100         fi
3101         ld_default="link"
3102         nm_default="dumpbin -symbols"
3103         ar_default="lib"
3104         target_os_default="win32"
3105         # Use a relative path for TMPDIR. This makes sure all the
3106         # ffconf temp files are written with a relative path, avoiding
3107         # issues with msys/win32 path conversion for MSVC parameters
3108         # such as -Fo<file> or -out:<file>.
3109         TMPDIR=.
3110     ;;
3111     icl)
3112         cc_default="icl"
3113         ld_default="xilink"
3114         nm_default="dumpbin -symbols"
3115         ar_default="xilib"
3116         target_os_default="win32"
3117         TMPDIR=.
3118     ;;
3119     gcov)
3120         add_cflags  -fprofile-arcs -ftest-coverage
3121         add_ldflags -fprofile-arcs -ftest-coverage
3122     ;;
3123     hardened)
3124         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3125         add_cflags   -fno-strict-overflow -fstack-protector-all
3126         add_ldflags  -Wl,-z,relro -Wl,-z,now
3127     ;;
3128     ?*)
3129         die "Unknown toolchain $toolchain"
3130     ;;
3131 esac
3132
3133 test -n "$cross_prefix" && enable cross_compile
3134
3135 if enabled cross_compile; then
3136     test -n "$arch" && test -n "$target_os" ||
3137         die "Must specify target arch and OS when cross-compiling"
3138 fi
3139
3140 ar_default="${cross_prefix}${ar_default}"
3141 cc_default="${cross_prefix}${cc_default}"
3142 cxx_default="${cross_prefix}${cxx_default}"
3143 nm_default="${cross_prefix}${nm_default}"
3144 pkg_config_default="${cross_prefix}${pkg_config_default}"
3145 ranlib_default="${cross_prefix}${ranlib_default}"
3146 strip_default="${cross_prefix}${strip_default}"
3147 windres_default="${cross_prefix}${windres_default}"
3148
3149 sysinclude_default="${sysroot}/usr/include"
3150
3151 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3152     target_exec target_os yasmexe
3153 enabled cross_compile || host_cc_default=$cc
3154 set_default host_cc
3155
3156 pkg_config_fail_message=""
3157 if ! $pkg_config --version >/dev/null 2>&1; then
3158     warn "$pkg_config not found, library detection may fail."
3159     pkg_config=false
3160 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3161     pkg_config_fail_message="
3162 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3163 fi
3164
3165 if test $doxygen != $doxygen_default && \
3166   ! $doxygen --version >/dev/null 2>&1; then
3167     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3168 fi
3169
3170 exesuf() {
3171     case $1 in
3172         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3173     esac
3174 }
3175
3176 EXESUF=$(exesuf $target_os)
3177 HOSTEXESUF=$(exesuf $host_os)
3178
3179 # set temporary file name
3180 : ${TMPDIR:=$TEMPDIR}
3181 : ${TMPDIR:=$TMP}
3182 : ${TMPDIR:=/tmp}
3183
3184 if [ -n "$tempprefix" ] ; then
3185     mktemp(){
3186         echo $tempprefix.${HOSTNAME}.${UID}
3187     }
3188 elif ! check_cmd mktemp -u XXXXXX; then
3189     # simple replacement for missing mktemp
3190     # NOT SAFE FOR GENERAL USE
3191     mktemp(){
3192         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3193     }
3194 fi
3195
3196 tmpfile(){
3197     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3198         (set -C; exec > $tmp) 2>/dev/null ||
3199         die "Unable to create temporary file in $TMPDIR."
3200     append TMPFILES $tmp
3201     eval $1=$tmp
3202 }
3203
3204 trap 'rm -f -- $TMPFILES' EXIT
3205
3206 tmpfile TMPASM .asm
3207 tmpfile TMPC   .c
3208 tmpfile TMPCPP .cpp
3209 tmpfile TMPE   $EXESUF
3210 tmpfile TMPH   .h
3211 tmpfile TMPM   .m
3212 tmpfile TMPO   .o
3213 tmpfile TMPS   .S
3214 tmpfile TMPSH  .sh
3215 tmpfile TMPV   .ver
3216
3217 unset -f mktemp
3218
3219 chmod +x $TMPE
3220
3221 # make sure we can execute files in $TMPDIR
3222 cat > $TMPSH 2>> $logfile <<EOF
3223 #! /bin/sh
3224 EOF
3225 chmod +x $TMPSH >> $logfile 2>&1
3226 if ! $TMPSH >> $logfile 2>&1; then
3227     cat <<EOF
3228 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3229 variable to another directory and make sure that it is not mounted noexec.
3230 EOF
3231     die "Sanity test failed."
3232 fi
3233
3234 armasm_flags(){
3235     for flag; do
3236         case $flag in
3237             # Filter out MSVC cl.exe options from cflags that shouldn't
3238             # be passed to gas-preprocessor
3239             -M[TD]*)                                            ;;
3240             *)                  echo $flag                      ;;
3241         esac
3242    done
3243 }
3244
3245 ccc_flags(){
3246     for flag; do
3247         case $flag in
3248             -std=c99)           echo -c99                       ;;
3249             -mcpu=*)            echo -arch ${flag#*=}           ;;
3250             -mieee)             echo -ieee                      ;;
3251             -O*|-fast)          echo $flag                      ;;
3252             -fno-math-errno)    echo -assume nomath_errno       ;;
3253             -g)                 echo -g3                        ;;
3254             -Wall)              echo -msg_enable level2         ;;
3255             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3256             -Wl,*)              echo $flag                      ;;
3257             -f*|-W*)                                            ;;
3258             *)                  echo $flag                      ;;
3259         esac
3260    done
3261 }
3262
3263 cparser_flags(){
3264     for flag; do
3265         case $flag in
3266             -Wno-switch)             echo -Wno-switch-enum ;;
3267             -Wno-format-zero-length) ;;
3268             -Wdisabled-optimization) ;;
3269             -Wno-pointer-sign)       echo -Wno-other ;;
3270             *)                       echo $flag ;;
3271         esac
3272     done
3273 }
3274
3275 msvc_common_flags(){
3276     for flag; do
3277         case $flag in
3278             # In addition to specifying certain flags under the compiler
3279             # specific filters, they must be specified here as well or else the
3280             # generic catch all at the bottom will print the original flag.
3281             -Wall)                ;;
3282             -std=c99)             ;;
3283             # Common flags
3284             -fomit-frame-pointer) ;;
3285             -g)                   echo -Z7 ;;
3286             -fno-math-errno)      ;;
3287             -fno-common)          ;;
3288             -fno-signed-zeros)    ;;
3289             -fPIC)                ;;
3290             -mthumb)              ;;
3291             -march=*)             ;;
3292             -lz)                  echo zlib.lib ;;
3293             -lavifil32)           echo vfw32.lib ;;
3294             -lavicap32)           echo vfw32.lib user32.lib ;;
3295             -l*)                  echo ${flag#-l}.lib ;;
3296             -L*)                  echo -libpath:${flag#-L} ;;
3297             *)                    echo $flag ;;
3298         esac
3299     done
3300 }
3301
3302 msvc_flags(){
3303     msvc_common_flags "$@"
3304     for flag; do
3305         case $flag in
3306             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3307                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3308                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3309                                        -wd4307 \
3310                                        -wd4273 -wd4554 -wd4701 ;;
3311         esac
3312     done
3313 }
3314
3315 icl_flags(){
3316     msvc_common_flags "$@"
3317     for flag; do
3318         case $flag in
3319             # Despite what Intel's documentation says -Wall, which is supported
3320             # on Windows, does enable remarks so disable them here.
3321             -Wall)                echo $flag -Qdiag-disable:remark ;;
3322             -std=c99)             echo -Qstd=c99 ;;
3323             -flto)                echo -ipo ;;
3324         esac
3325     done
3326 }
3327
3328 icc_flags(){
3329     for flag; do
3330         case $flag in
3331             -flto)                echo -ipo ;;
3332             *)                    echo $flag ;;
3333         esac
3334     done
3335 }
3336
3337 pgi_flags(){
3338     for flag; do
3339         case $flag in
3340             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3341             -fomit-frame-pointer) echo -Mnoframe ;;
3342             -g)                   echo -gopt ;;
3343             *)                    echo $flag ;;
3344         esac
3345     done
3346 }
3347
3348 suncc_flags(){
3349     for flag; do
3350         case $flag in
3351             -march=*|-mcpu=*)
3352                 case "${flag#*=}" in
3353                     native)                   echo -xtarget=native       ;;
3354                     v9|niagara)               echo -xarch=sparc          ;;
3355                     ultrasparc)               echo -xarch=sparcvis       ;;
3356                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3357                     i586|pentium)             echo -xchip=pentium        ;;
3358                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3359                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3360                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3361                     pentium4*)          echo -xtarget=pentium4           ;;
3362                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3363                     *-sse3)             echo -xarch=sse3                 ;;
3364                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3365                     bonnell)                   echo -xarch=ssse3         ;;
3366                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3367                     westmere)                  echo -xtarget=westmere    ;;
3368                     silvermont)                echo -xarch=sse4_2        ;;
3369                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3370                     core-avx*|ivybridge|haswell|broadwell)
3371                                                echo -xarch=avx           ;;
3372                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3373                     btver1)                    echo -xarch=amdsse4a      ;;
3374                     btver2|bdver*)             echo -xarch=avx           ;;
3375                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3376                     k8|opteron|athlon64|athlon-fx)
3377                                                echo -xarch=sse2a         ;;
3378                     athlon*)                   echo -xarch=pentium_proa  ;;
3379                 esac
3380                 ;;
3381             -std=c99)             echo -xc99              ;;
3382             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3383             -fPIC)                echo -KPIC -xcode=pic32 ;;
3384             -W*,*)                echo $flag              ;;
3385             -f*-*|-W*|-mimpure-text)                      ;;
3386             -shared)              echo -G                 ;;
3387             *)                    echo $flag              ;;
3388         esac
3389     done
3390 }
3391
3392 tms470_flags(){
3393     for flag; do
3394         case $flag in
3395             -march=*|-mcpu=*)
3396                 case "${flag#*=}" in
3397                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3398                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3399                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3400                     armv6*|arm11*)          echo -mv=6   ;;
3401                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3402                                             echo -mv=5e  ;;
3403                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3404                 esac
3405                 ;;
3406             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3407             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3408             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3409             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3410             -msoft-float)   echo --float_support=vfplib       ;;
3411             -O[0-3]|-mf=*)  echo $flag                        ;;
3412             -g)             echo -g -mn                       ;;
3413             -pds=*)         echo $flag                        ;;
3414             -D*|-I*)        echo $flag                        ;;
3415             --gcc|--abi=*)  echo $flag                        ;;
3416             -me)            echo $flag                        ;;
3417         esac
3418     done
3419 }
3420
3421 probe_cc(){
3422     pfx=$1
3423     _cc=$2
3424
3425     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3426     unset _ld_o _ldflags _ld_lib _ld_path
3427     unset _depflags _DEPCMD _DEPFLAGS
3428     _flags_filter=echo
3429
3430     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3431         true # no-op to avoid reading stdin in following checks
3432     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3433         _type=llvm_gcc
3434         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3435         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3436         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3437         _cflags_speed='-O3'
3438         _cflags_size='-Os'
3439     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3440         _type=gcc
3441         gcc_version=$($_cc --version | head -n1)
3442         gcc_basever=$($_cc -dumpversion)
3443         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3444         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3445         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3446         if ! $_cc -dumpversion | grep -q '^2\.'; then
3447             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3448         fi
3449         _cflags_speed='-O3'
3450         _cflags_size='-Os'
3451     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3452         _type=icc
3453         _ident=$($_cc --version | head -n1)
3454         _depflags='-MMD'
3455         _cflags_speed='-O3'
3456         _cflags_size='-Os'
3457         _cflags_noopt='-O1'
3458         _flags_filter=icc_flags
3459     elif $_cc -v 2>&1 | grep -q xlc; then
3460         _type=xlc
3461         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3462         _cflags_speed='-O5'
3463         _cflags_size='-O5 -qcompact'
3464     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3465         _type=ccc
3466         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3467         _DEPFLAGS='-M'
3468         _cflags_speed='-fast'
3469         _cflags_size='-O1'
3470         _flags_filter=ccc_flags
3471     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3472         test -d "$sysroot" || die "No valid sysroot specified."
3473         _type=armcc
3474         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3475         armcc_conf="$PWD/armcc.conf"
3476         $_cc --arm_linux_configure                 \
3477              --arm_linux_config_file="$armcc_conf" \
3478              --configure_sysroot="$sysroot"        \
3479              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3480              die "Error creating armcc configuration file."
3481         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3482         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3483         as_default="${cross_prefix}gcc"
3484         _depflags='-MMD'
3485         _cflags_speed='-O3'
3486         _cflags_size='-Os'
3487     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3488         _type=tms470
3489         _ident=$($_cc -version | head -n1 | tr -s ' ')
3490         _flags='--gcc --abi=eabi -me'
3491         _cc_e='-ppl -fe=$@'
3492         _cc_o='-fe=$@'
3493         _depflags='-ppa -ppd=$(@:.o=.d)'
3494         _cflags_speed='-O3 -mf=5'
3495         _cflags_size='-O3 -mf=2'
3496         _flags_filter=tms470_flags
3497     elif $_cc -v 2>&1 | grep -q clang; then
3498         _type=clang
3499         _ident=$($_cc --version | head -n1)
3500         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3501         _cflags_speed='-O3'
3502         _cflags_size='-Os'
3503     elif $_cc -V 2>&1 | grep -q Sun; then
3504         _type=suncc
3505         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3506         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3507         _DEPFLAGS='-xM1 -xc99'
3508         _ldflags='-std=c99'
3509         _cflags_speed='-O5'
3510         _cflags_size='-O5 -xspace'
3511         _flags_filter=suncc_flags
3512     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3513         _type=pathscale
3514         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3515         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3516         _cflags_speed='-O2'
3517         _cflags_size='-Os'
3518         _flags_filter='filter_out -Wdisabled-optimization'
3519     elif $_cc -v 2>&1 | grep -q Open64; then
3520         _type=open64
3521         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3522         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3523         _cflags_speed='-O2'
3524         _cflags_size='-Os'
3525         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3526     elif $_cc -V 2>&1 | grep -q Portland; then
3527         _type=pgi
3528         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3529         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3530         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3531         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3532         _cflags_noopt="-O"
3533         _flags_filter=pgi_flags
3534     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3535         _type=armasm
3536         _ident=$($_cc | head -n1)
3537         # 4509: "This form of conditional instruction is deprecated"
3538         _flags="-nologo -ignore 4509"
3539         _flags_filter=armasm_flags
3540     elif $_cc 2>&1 | grep -q Intel; then
3541         _type=icl
3542         _ident=$($_cc 2>&1 | head -n1)
3543         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3544         # Not only is O3 broken on 13.x+ but it is slower on all previous
3545         # versions (tested) as well.
3546         _cflags_speed="-O2"
3547         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3548         if $_cc 2>&1 | grep -q Linker; then
3549             _ld_o='-out:$@'
3550         else
3551             _ld_o='-Fe$@'
3552         fi
3553         _cc_o='-Fo$@'
3554         _cc_e='-P'
3555         _flags_filter=icl_flags
3556         _ld_lib='lib%.a'
3557         _ld_path='-libpath:'
3558         # -Qdiag-error to make icl error when seeing certain unknown arguments
3559         _flags='-nologo -Qdiag-error:4044,10157'
3560         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3561         # with MSVC which enables it by default.
3562         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3563         if [ $pfx = hostcc ]; then
3564             append _cflags -Dsnprintf=_snprintf
3565         fi
3566         disable stripping
3567     elif $_cc 2>&1 | grep -q Microsoft; then
3568         _type=msvc
3569         _ident=$($_cc 2>&1 | head -n1)
3570         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3571         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3572         _cflags_speed="-O2"
3573         _cflags_size="-O1"
3574         if $_cc 2>&1 | grep -q Linker; then
3575             _ld_o='-out:$@'
3576         else
3577             _ld_o='-Fe$@'
3578         fi
3579         _cc_o='-Fo$@'
3580         _cc_e='-P -Fi$@'
3581         _flags_filter=msvc_flags
3582         _ld_lib='lib%.a'
3583         _ld_path='-libpath:'
3584         _flags='-nologo'
3585         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3586         if [ $pfx = hostcc ]; then
3587             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3588                 append _cflags -Dsnprintf=_snprintf
3589             fi
3590         fi
3591         disable stripping
3592     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3593         _type=cparser
3594         _ident=$($_cc --version | head -n1)
3595         _depflags='-MMD'
3596         _cflags_speed='-O4'
3597         _cflags_size='-O2'
3598         _flags_filter=cparser_flags
3599     fi
3600
3601     eval ${pfx}_type=\$_type
3602     eval ${pfx}_ident=\$_ident
3603 }
3604
3605 set_ccvars(){
3606     eval ${1}_C=\${_cc_c-\${${1}_C}}
3607     eval ${1}_E=\${_cc_e-\${${1}_E}}
3608     eval ${1}_O=\${_cc_o-\${${1}_O}}
3609
3610     if [ -n "$_depflags" ]; then
3611         eval ${1}_DEPFLAGS=\$_depflags
3612     else
3613         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3614         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3615         eval DEP${1}FLAGS=\$_flags
3616     fi
3617 }
3618
3619 probe_cc cc "$cc"
3620 cflags_filter=$_flags_filter
3621 cflags_speed=$_cflags_speed
3622 cflags_size=$_cflags_size
3623 cflags_noopt=$_cflags_noopt
3624 add_cflags $_flags $_cflags
3625 cc_ldflags=$_ldflags
3626 set_ccvars CC
3627
3628 probe_cc hostcc "$host_cc"
3629 host_cflags_filter=$_flags_filter
3630 add_host_cflags  $_flags $_cflags
3631 set_ccvars HOSTCC
3632
3633 test -n "$cc_type" && enable $cc_type ||
3634     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3635
3636 : ${as_default:=$cc}
3637 : ${dep_cc_default:=$cc}
3638 : ${ld_default:=$cc}
3639 : ${host_ld_default:=$host_cc}
3640 set_default ar as dep_cc ld host_ld windres
3641
3642 probe_cc as "$as"
3643 asflags_filter=$_flags_filter
3644 add_asflags $_flags $_cflags
3645 set_ccvars AS
3646
3647 probe_cc ld "$ld"
3648 ldflags_filter=$_flags_filter
3649 add_ldflags $_flags $_ldflags
3650 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3651 LD_O=${_ld_o-$LD_O}
3652 LD_LIB=${_ld_lib-$LD_LIB}
3653 LD_PATH=${_ld_path-$LD_PATH}
3654
3655 probe_cc hostld "$host_ld"
3656 host_ldflags_filter=$_flags_filter
3657 add_host_ldflags $_flags $_ldflags
3658 HOSTLD_O=${_ld_o-$HOSTLD_O}
3659
3660 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3661     probe_cc depcc "$dep_cc"
3662     CCDEP=${_DEPCMD:-$DEPCMD}
3663     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3664     DEPCCFLAGS=$_flags
3665 fi
3666
3667 if $ar 2>&1 | grep -q Microsoft; then
3668     arflags="-nologo"
3669     ar_o='-out:$@'
3670 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3671     arflags="rq"
3672     ar_o='$@'
3673 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3674     arflags='-Xany -r -c'
3675     ar_o='$@'
3676 elif $ar 2>&1 | grep -q "\[D\] "; then
3677     arflags="rcD"
3678     ar_o='$@'
3679 else
3680     arflags="rc"
3681     ar_o='$@'
3682 fi
3683
3684 add_cflags $extra_cflags
3685 add_cxxflags $extra_cxxflags
3686 add_asflags $extra_cflags
3687
3688 if test -n "$sysroot"; then
3689     case "$cc_type" in
3690         gcc|llvm_gcc|clang)
3691             add_cppflags --sysroot="$sysroot"
3692             add_ldflags --sysroot="$sysroot"
3693 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3694             add_cppflags -isysroot "$sysroot"
3695             add_ldflags -isysroot "$sysroot"
3696         ;;
3697         tms470)
3698             add_cppflags -I"$sysinclude"
3699             add_ldflags  --sysroot="$sysroot"
3700         ;;
3701     esac
3702 fi
3703
3704 if test "$cpu" = host; then
3705     enabled cross_compile &&
3706         die "--cpu=host makes no sense when cross-compiling."
3707
3708     case "$cc_type" in
3709         gcc|llvm_gcc)
3710             check_native(){
3711                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3712                 sed -n "/cc1.*$1=/{
3713                             s/.*$1=\\([^ ]*\\).*/\\1/
3714                             p
3715                             q
3716                         }" $TMPE
3717             }
3718             cpu=$(check_native -march || check_native -mcpu)
3719         ;;
3720     esac
3721
3722     test "${cpu:-host}" = host &&
3723         die "--cpu=host not supported with compiler $cc"
3724 fi
3725
3726 # Deal with common $arch aliases
3727 case "$arch" in
3728     aarch64|arm64)
3729         arch="aarch64"
3730     ;;
3731     arm*|iPad*|iPhone*)
3732         arch="arm"
3733     ;;
3734     mips*|IP*)
3735         arch="mips"
3736     ;;
3737     parisc*|hppa*)
3738         arch="parisc"
3739     ;;
3740     "Power Macintosh"|ppc*|powerpc*)
3741         arch="ppc"
3742     ;;
3743     s390|s390x)
3744         arch="s390"
3745     ;;
3746     sh4|sh)
3747         arch="sh4"
3748     ;;
3749     sun4u|sparc*)
3750         arch="sparc"
3751     ;;
3752     tilegx|tile-gx)
3753         arch="tilegx"
3754     ;;
3755     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3756         arch="x86"
3757     ;;
3758 esac
3759
3760 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3761 enable $arch
3762
3763 # Add processor-specific flags
3764 if enabled aarch64; then
3765
3766     case $cpu in
3767         armv*)
3768             cpuflags="-march=$cpu"
3769         ;;
3770         *)
3771             cpuflags="-mcpu=$cpu"
3772         ;;
3773     esac
3774
3775 elif enabled alpha; then
3776
3777     cpuflags="-mcpu=$cpu"
3778
3779 elif enabled arm; then
3780
3781     check_arm_arch() {
3782         check_cpp_condition stddef.h \
3783             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3784             $cpuflags
3785     }
3786
3787     probe_arm_arch() {
3788         if   check_arm_arch 4;        then echo armv4;
3789         elif check_arm_arch 4T;       then echo armv4t;
3790         elif check_arm_arch 5;        then echo armv5;
3791         elif check_arm_arch 5E;       then echo armv5e;
3792         elif check_arm_arch 5T;       then echo armv5t;
3793         elif check_arm_arch 5TE;      then echo armv5te;
3794         elif check_arm_arch 5TEJ;     then echo armv5te;
3795         elif check_arm_arch 6;        then echo armv6;
3796         elif check_arm_arch 6J;       then echo armv6j;
3797         elif check_arm_arch 6K;       then echo armv6k;
3798         elif check_arm_arch 6Z;       then echo armv6z;
3799         elif check_arm_arch 6ZK;      then echo armv6zk;
3800         elif check_arm_arch 6T2;      then echo armv6t2;
3801         elif check_arm_arch 7;        then echo armv7;
3802         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3803         elif check_arm_arch 7S;       then echo armv7-a;
3804         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3805         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3806         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3807         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3808         fi
3809     }
3810
3811     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3812
3813     case $cpu in
3814         armv*)
3815             cpuflags="-march=$cpu"
3816             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3817         ;;
3818         *)
3819             cpuflags="-mcpu=$cpu"
3820             case $cpu in
3821                 cortex-a*)                               subarch=armv7a  ;;
3822                 cortex-r*)                               subarch=armv7r  ;;
3823                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3824                 arm11*)                                  subarch=armv6   ;;
3825                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3826                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3827                 *)                             subarch=$(probe_arm_arch) ;;
3828             esac
3829         ;;
3830     esac
3831
3832     case "$subarch" in
3833         armv5t*)    enable fast_clz                ;;
3834         armv[6-8]*)
3835             enable fast_clz
3836             disabled fast_unaligned || enable fast_unaligned
3837             ;;
3838     esac
3839
3840 elif enabled avr32; then
3841
3842     case $cpu in
3843         ap7[02]0[0-2])
3844             subarch="avr32_ap"
3845             cpuflags="-mpart=$cpu"
3846         ;;
3847         ap)
3848             subarch="avr32_ap"
3849             cpuflags="-march=$cpu"
3850         ;;
3851         uc3[ab]*)
3852             subarch="avr32_uc"
3853             cpuflags="-mcpu=$cpu"
3854         ;;
3855         uc)
3856             subarch="avr32_uc"
3857             cpuflags="-march=$cpu"
3858         ;;
3859     esac
3860
3861 elif enabled bfin; then
3862
3863     cpuflags="-mcpu=$cpu"
3864
3865 elif enabled mips; then
3866
3867     cpuflags="-march=$cpu"
3868
3869     case $cpu in
3870         24kc)
3871             disable mips32r5
3872             disable mips64r6
3873             disable mipsfpu
3874             disable mipsdspr1
3875             disable mipsdspr2
3876             disable msa
3877         ;;
3878         24kf*)
3879             disable mips32r5
3880             disable mips64r6
3881             disable mipsdspr1
3882             disable mipsdspr2
3883             disable msa
3884         ;;
3885         24kec|34kc|1004kc)
3886             disable mips32r5
3887             disable mips64r6
3888             disable mipsfpu
3889             disable mipsdspr2
3890             disable msa
3891         ;;
3892         24kef*|34kf*|1004kf*)
3893             disable mips32r5
3894             disable mips64r6
3895             disable mipsdspr2
3896             disable msa
3897         ;;
3898         74kc)
3899             disable mips32r5
3900             disable mips64r6
3901             disable mipsfpu
3902             disable msa
3903         ;;
3904         74kf)
3905             disable mips32r5
3906             disable mips64r6
3907             disable msa
3908         ;;
3909         p5600)
3910             disable mips64r6
3911             disable mipsdspr1
3912             disable mipsdspr2
3913
3914             check_cflags "-mtune=p5600"
3915         ;;
3916         i6400)
3917             disable mips32r5
3918             disable mipsdspr1
3919             disable mipsdspr2
3920             disable mipsfpu
3921
3922             check_cflags "-mtune=i6400 -mabi=64"
3923             check_ldflags "-mabi=64"
3924         ;;
3925         loongson3*)
3926             disable mipsfpu
3927             disable mips32r2
3928             disable mips32r5
3929             disable mips64r6
3930             disable mipsdspr1
3931             disable mipsdspr2
3932             disable msa
3933             enable local_aligned_8 local_aligned_16
3934             enable simd_align_16
3935             enable fast_64bit
3936             enable fast_clz
3937             enable fast_cmov
3938             enable fast_unaligned
3939             disable aligned_stack
3940             cpuflags="-march=loongson3a -mhard-float"
3941         ;;
3942         generic)
3943             disable mips32r5
3944             disable mips64r6
3945             disable msa
3946         ;;
3947     esac
3948
3949 elif enabled ppc; then
3950
3951     disable ldbrx
3952     disable vsx
3953
3954     case $(tolower $cpu) in
3955         601|ppc601|powerpc601)
3956             cpuflags="-mcpu=601"
3957             disable altivec
3958         ;;
3959         603*|ppc603*|powerpc603*)
3960             cpuflags="-mcpu=603"
3961             disable altivec
3962         ;;
3963         604*|ppc604*|powerpc604*)
3964             cpuflags="-mcpu=604"
3965             disable altivec
3966         ;;
3967         g3|75*|ppc75*|powerpc75*)
3968             cpuflags="-mcpu=750"
3969             disable altivec
3970         ;;
3971         g4|745*|ppc745*|powerpc745*)
3972             cpuflags="-mcpu=7450"
3973         ;;
3974         74*|ppc74*|powerpc74*)
3975             cpuflags="-mcpu=7400"
3976         ;;
3977         g5|970|ppc970|powerpc970)
3978             cpuflags="-mcpu=970"
3979         ;;
3980         power[3-8]*)
3981             cpuflags="-mcpu=$cpu"
3982         ;;
3983         cell)
3984             cpuflags="-mcpu=cell"
3985             enable ldbrx
3986         ;;
3987         e500mc)
3988             cpuflags="-mcpu=e500mc"
3989             disable altivec
3990         ;;
3991         e500v2)
3992             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3993             disable altivec
3994             disable dcbzl
3995         ;;
3996         e500)
3997             cpuflags="-mcpu=8540 -mhard-float"
3998             disable altivec
3999             disable dcbzl
4000         ;;
4001     esac
4002
4003 elif enabled sparc; then
4004
4005     case $cpu in
4006         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4007             cpuflags="-mcpu=$cpu"
4008         ;;
4009         ultrasparc*|niagara[234])
4010             cpuflags="-mcpu=$cpu"
4011         ;;
4012     esac
4013
4014 elif enabled x86; then
4015
4016     case $cpu in
4017         i[345]86|pentium)
4018             cpuflags="-march=$cpu"
4019             disable i686
4020             disable mmx
4021         ;;
4022         # targets that do NOT support nopl and conditional mov (cmov)
4023         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4024             cpuflags="-march=$cpu"
4025             disable i686
4026         ;;
4027         # targets that do support nopl and conditional mov (cmov)
4028         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4029         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4030             cpuflags="-march=$cpu"
4031             enable i686
4032             enable fast_cmov
4033         ;;
4034         # targets that do support conditional mov but on which it's slow
4035         pentium4|pentium4m|prescott|nocona)
4036             cpuflags="-march=$cpu"
4037             enable i686
4038             disable fast_cmov
4039         ;;
4040     esac
4041
4042 fi
4043
4044 if [ "$cpu" != generic ]; then
4045     add_cflags  $cpuflags
4046     add_asflags $cpuflags
4047 fi
4048
4049 # compiler sanity check
4050 check_exec <<EOF
4051 int main(void){ return 0; }
4052 EOF
4053 if test "$?" != 0; then
4054     echo "$cc is unable to create an executable file."
4055     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4056         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4057         echo "Only do this if you know what cross compiling means."
4058     fi
4059     die "C compiler test failed."
4060 fi
4061
4062 add_cppflags -D_ISOC99_SOURCE
4063 add_cxxflags -D__STDC_CONSTANT_MACROS
4064 check_cflags -std=c99
4065 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4066 #include <stdlib.h>
4067 EOF
4068 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4069 #include <stdlib.h>
4070 EOF
4071
4072 add_host_cppflags -D_ISOC99_SOURCE
4073 check_host_cflags -std=c99
4074 check_host_cflags -Wall
4075 check_host_cflags -O3
4076
4077 check_64bit(){
4078     arch32=$1
4079     arch64=$2
4080     expr=$3
4081     check_code cc "" "int test[2*($expr) - 1]" &&
4082         subarch=$arch64 || subarch=$arch32
4083 }
4084
4085 case "$arch" in
4086     aarch64|alpha|ia64)
4087         spic=$shared
4088     ;;
4089     mips)
4090         check_64bit mips mips64 '_MIPS_SIM > 1'
4091         spic=$shared
4092     ;;
4093     parisc)
4094         check_64bit parisc parisc64 'sizeof(void *) > 4'
4095         spic=$shared
4096     ;;
4097     ppc)
4098         check_64bit ppc ppc64 'sizeof(void *) > 4'
4099         spic=$shared
4100     ;;
4101     s390)
4102         check_64bit s390 s390x 'sizeof(void *) > 4'
4103         spic=$shared
4104     ;;
4105     sparc)
4106         check_64bit sparc sparc64 'sizeof(void *) > 4'
4107         spic=$shared
4108     ;;
4109     x86)
4110         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4111         # Treat x32 as x64 for now. Note it also needs spic=$shared
4112         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4113             subarch=x86_64
4114         if test "$subarch" = "x86_64"; then
4115             spic=$shared
4116         fi
4117     ;;
4118     ppc)
4119         check_cc <<EOF && subarch="ppc64"
4120         int test[(int)sizeof(char*) - 7];
4121 EOF
4122     ;;
4123 esac
4124
4125 enable $subarch
4126 enabled spic && enable_weak pic
4127
4128 # OS specific
4129 case $target_os in
4130     aix)
4131         SHFLAGS=-shared
4132         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4133         enabled shared && add_ldflags -Wl,-brtl
4134         ;;
4135     android)
4136         disable symver
4137         enable section_data_rel_ro
4138         SLIB_INSTALL_NAME='$(SLIBNAME)'
4139         SLIB_INSTALL_LINKS=
4140         # soname not set on purpose
4141         SHFLAGS=-shared
4142         ;;
4143     haiku)
4144         prefix_default="/boot/common"
4145         network_extralibs="-lnetwork"
4146         host_libs=
4147         ;;
4148     sunos)
4149         SHFLAGS='-shared -Wl,-h,$$(@F)'
4150         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4151         network_extralibs="-lsocket -lnsl"
4152         add_cppflags -D__EXTENSIONS__
4153         # When using suncc to build, the Solaris linker will mark
4154         # an executable with each instruction set encountered by
4155         # the Solaris assembler.  As our libraries contain their own
4156         # guards for processor-specific code, instead suppress
4157         # generation of the HWCAPS ELF section on Solaris x86 only.
4158         enabled_all suncc x86 &&
4159             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4160             add_ldflags -Wl,-M,mapfile
4161         nm_default='nm -P -g'
4162         ;;
4163     netbsd)
4164         disable symver
4165         oss_indev_extralibs="-lossaudio"
4166         oss_outdev_extralibs="-lossaudio"
4167         enabled gcc || check_ldflags -Wl,-zmuldefs
4168         ;;
4169     openbsd|bitrig)
4170         disable symver
4171         SHFLAGS='-shared'
4172         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4173         SLIB_INSTALL_LINKS=
4174         oss_indev_extralibs="-lossaudio"
4175         oss_outdev_extralibs="-lossaudio"
4176         ;;
4177     dragonfly)
4178         disable symver
4179         ;;
4180     freebsd)
4181         ;;
4182     bsd/os)
4183         add_extralibs -lpoll -lgnugetopt
4184         strip="strip -d"
4185         ;;
4186     darwin)
4187         enabled ppc && add_asflags -force_cpusubtype_ALL
4188         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4189         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4190         strip="${strip} -x"
4191         add_ldflags -Wl,-dynamic,-search_paths_first
4192         SLIBSUF=".dylib"
4193         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4194         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4195         objformat="macho"
4196         enabled x86_64 && objformat="macho64"
4197         enabled_any pic shared x86_64 ||
4198             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4199         ;;
4200     mingw32*)
4201         if test $target_os = "mingw32ce"; then
4202             disable network
4203         else
4204             target_os=mingw32
4205         fi
4206         LIBTARGET=i386
4207         if enabled x86_64; then
4208             LIBTARGET="i386:x86-64"
4209         elif enabled arm; then
4210             LIBTARGET=arm-wince
4211         fi
4212         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4213         check_ldflags -Wl,--nxcompat
4214         check_ldflags -Wl,--dynamicbase
4215         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4216         shlibdir_default="$bindir_default"
4217         SLIBPREF=""
4218         SLIBSUF=".dll"
4219         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4220         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4221         dlltool="${cross_prefix}dlltool"
4222         if check_cmd lib.exe -list; then
4223             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4224             if enabled x86_64; then
4225                 LIBTARGET=x64
4226             fi
4227         elif check_cmd $dlltool --version; then
4228             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4229         fi
4230         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4231         SLIB_INSTALL_LINKS=
4232         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4233         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4234         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4235         objformat="win32"
4236         ranlib=:
4237         enable dos_paths
4238         ;;
4239     win32|win64)
4240         disable symver
4241         if enabled shared; then
4242             # Link to the import library instead of the normal static library
4243             # for shared libs.
4244             LD_LIB='%.lib'
4245             # Cannot build both shared and static libs with MSVC or icl.
4246             disable static
4247         fi
4248         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4249         shlibdir_default="$bindir_default"
4250         SLIBPREF=""
4251         SLIBSUF=".dll"
4252         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4253         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4254         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4255         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4256         SLIB_INSTALL_LINKS=
4257         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4258         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4259         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4260         objformat="win32"
4261         ranlib=:
4262         enable dos_paths
4263         ;;
4264     cygwin*)
4265         target_os=cygwin
4266         shlibdir_default="$bindir_default"
4267         SLIBPREF="cyg"
4268         SLIBSUF=".dll"
4269         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4270         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4271         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4272         SLIB_INSTALL_LINKS=
4273         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4274         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4275         objformat="win32"
4276         enable dos_paths
4277         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4278         ;;
4279     *-dos|freedos|opendos)
4280         network_extralibs="-lsocket"
4281         objformat="coff"
4282         enable dos_paths
4283         add_cppflags -U__STRICT_ANSI__
4284         ;;
4285     linux)
4286         enable dv1394
4287         enable section_data_rel_ro
4288         ;;
4289     irix*)
4290         target_os=irix
4291         ranlib="echo ignoring ranlib"
4292         ;;
4293     os/2*)
4294         strip="lxlite -CS"
4295         ln_s="cp -f"
4296         objformat="aout"
4297         add_cppflags -D_GNU_SOURCE
4298         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4299         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4300         LIBSUF="_s.a"
4301         SLIBPREF=""
4302         SLIBSUF=".dll"
4303         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4304         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4305         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4306             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4307             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4308             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4309             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4310         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4311             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4312         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4313         enable dos_paths
4314         enable_weak os2threads
4315         ;;
4316     gnu/kfreebsd)
4317         add_cppflags -D_BSD_SOURCE
4318         ;;
4319     gnu)
4320         ;;
4321     qnx)
4322         add_cppflags -D_QNX_SOURCE
4323         network_extralibs="-lsocket"
4324         ;;
4325     symbian)
4326         SLIBSUF=".dll"
4327         enable dos_paths
4328         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4329         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4330         add_ldflags -Wl,--target1-abs,--no-undefined \
4331                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4332                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4333         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4334                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4335                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4336         ;;
4337     osf1)
4338         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4339         ;;
4340     minix)
4341         ;;
4342     plan9)
4343         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4344                      -D_REENTRANT_SOURCE        \
4345                      -D_RESEARCH_SOURCE         \
4346                      -DFD_SETSIZE=96            \
4347                      -DHAVE_SOCK_OPTS
4348         add_compat strtod.o strtod=avpriv_strtod
4349         network_extralibs='-lbsd'
4350         exeobjs=compat/plan9/main.o
4351         disable ffserver
4352         cp_f='cp'
4353         ;;
4354     none)
4355         ;;
4356     *)
4357         die "Unknown OS '$target_os'."
4358         ;;
4359 esac
4360
4361 # determine libc flavour
4362
4363 probe_libc(){
4364     pfx=$1
4365     pfx_no_=${pfx%_}
4366     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4367     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4368         eval ${pfx}libc_type=uclibc
4369         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4370     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4371         eval ${pfx}libc_type=glibc
4372         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4373     # MinGW headers can be installed on Cygwin, so check for newlib first.
4374     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4375         eval ${pfx}libc_type=newlib
4376         add_${pfx}cppflags -U__STRICT_ANSI__
4377     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4378     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4379         eval ${pfx}libc_type=mingw64
4380         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4381             add_compat msvcrt/snprintf.o
4382             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4383         fi
4384         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4385         eval test \$${pfx_no_}cc_type = "gcc" &&
4386             add_${pfx}cppflags -D__printf__=__gnu_printf__
4387     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4388          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4389         eval ${pfx}libc_type=mingw32
4390         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4391             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4392             die "ERROR: MinGW32 runtime version must be >= 3.15."
4393         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4394         eval test \$${pfx_no_}cc_type = "gcc" &&
4395             add_${pfx}cppflags -D__printf__=__gnu_printf__
4396     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4397         eval ${pfx}libc_type=msvcrt
4398         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4399         # 0x601 by default unless something else is set by the user.
4400         # This can easily lead to us detecting functions only present
4401         # in such new versions and producing binaries requiring windows 7.0.
4402         # Therefore explicitly set the default to XP unless the user has
4403         # set something else on the command line.
4404         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4405             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4406     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4407         eval ${pfx}libc_type=klibc
4408     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4409         eval ${pfx}libc_type=bionic
4410     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4411         eval ${pfx}libc_type=solaris
4412         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4413     fi
4414     check_${pfx}cc <<EOF
4415 #include <time.h>
4416 void *v = localtime_r;
4417 EOF
4418 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4419 #include <time.h>
4420 void *v = localtime_r;
4421 EOF
4422
4423 }
4424
4425 probe_libc
4426 test -n "$libc_type" && enable libc_$libc_type
4427 probe_libc host_
4428 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4429
4430 case $libc_type in
4431     bionic)
4432         add_compat strtod.o strtod=avpriv_strtod
4433         ;;
4434     msvcrt)
4435         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4436             add_compat strtod.o strtod=avpriv_strtod
4437             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4438                                          _snprintf=avpriv_snprintf  \
4439                                          vsnprintf=avpriv_vsnprintf
4440         fi
4441         ;;
4442 esac
4443
4444 # hacks for compiler/libc/os combinations
4445
4446 if enabled_all tms470 libc_glibc; then
4447     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4448     add_cppflags -D__USER_LABEL_PREFIX__=
4449     add_cppflags -D__builtin_memset=memset
4450     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4451     add_cflags   -pds=48    # incompatible redefinition of macro
4452 fi
4453
4454 if enabled_all ccc libc_glibc; then
4455     add_ldflags -Wl,-z,now  # calls to libots crash without this
4456 fi
4457
4458 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4459     add_cppflags '-I\$(SRC_PATH)/compat/float'
4460
4461 esc(){
4462     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4463 }
4464
4465 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4466
4467 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4468
4469 set_default libdir
4470 : ${shlibdir_default:="$libdir"}
4471
4472 set_default $PATHS_LIST
4473 set_default nm
4474
4475 # we need to build at least one lib type
4476 if ! enabled_any static shared; then
4477     cat <<EOF
4478 At least one library type must be built.
4479 Specify --enable-static to build the static libraries or --enable-shared to
4480 build the shared libraries as well. To only build the shared libraries specify
4481 --disable-static in addition to --enable-shared.
4482 EOF
4483     exit 1;
4484 fi
4485
4486 die_license_disabled() {
4487     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4488 }
4489
4490 die_license_disabled_gpl() {
4491     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4492 }
4493
4494 die_license_disabled gpl frei0r
4495 die_license_disabled gpl libcdio
4496 die_license_disabled gpl libsmbclient
4497 die_license_disabled gpl libutvideo
4498 die_license_disabled gpl libvidstab
4499 die_license_disabled gpl libx264
4500 die_license_disabled gpl libx265
4501 die_license_disabled gpl libxavs
4502 die_license_disabled gpl libxvid
4503 die_license_disabled gpl libzvbi
4504 die_license_disabled gpl x11grab
4505
4506 die_license_disabled nonfree libaacplus
4507 die_license_disabled nonfree libfaac
4508 die_license_disabled nonfree nvenc
4509 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4510 enabled gpl && die_license_disabled_gpl nonfree openssl
4511
4512 die_license_disabled version3 libopencore_amrnb
4513 die_license_disabled version3 libopencore_amrwb
4514 die_license_disabled version3 libsmbclient
4515 die_license_disabled version3 libvo_aacenc
4516 die_license_disabled version3 libvo_amrwbenc
4517
4518 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4519
4520 disabled optimizations || check_cflags -fomit-frame-pointer
4521
4522 enable_weak_pic() {
4523     disabled pic && return
4524     enable pic
4525     add_cppflags -DPIC
4526     case "$target_os" in
4527     mingw*|cygwin*)
4528         ;;
4529     *)
4530         add_cflags -fPIC
4531         ;;
4532     esac
4533     add_asflags  -fPIC
4534 }
4535
4536 enabled pic && enable_weak_pic
4537
4538 check_cc <<EOF || die "Symbol mangling check failed."
4539 int ff_extern;
4540 EOF
4541 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4542 extern_prefix=${sym%%ff_extern*}
4543
4544 check_cc <<EOF && enable_weak inline_asm
4545 void foo(void) { __asm__ volatile ("" ::); }
4546 EOF
4547
4548 _restrict=
4549 for restrict_keyword in restrict __restrict__ __restrict; do
4550     check_cc <<EOF && _restrict=$restrict_keyword && break
4551 void foo(char * $restrict_keyword p);
4552 EOF
4553 done
4554
4555 check_cc <<EOF && enable pragma_deprecated
4556 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4557 EOF
4558
4559 check_cc <<EOF && enable attribute_packed
4560 struct { int x; } __attribute__((packed)) x;
4561 EOF
4562
4563 check_cc <<EOF && enable attribute_may_alias
4564 union { int x; } __attribute__((may_alias)) x;
4565 EOF
4566
4567 check_cc <<EOF || die "endian test failed"
4568 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4569 EOF
4570 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4571
4572 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4573     if ! enabled bigendian && enabled altivec ;then
4574         enable vsx
4575     fi
4576 fi
4577
4578 check_gas() {
4579     log "check_gas using '$as' as AS"
4580     # :vararg is used on aarch64, arm and ppc altivec
4581     check_as <<EOF || return 1
4582 .macro m n, y:vararg=0
4583 \n: .int \y
4584 .endm
4585 m x
4586 EOF
4587     # .altmacro is only used in arm asm
4588     ! enabled arm || check_as <<EOF || return 1
4589 .altmacro
4590 EOF
4591     enable gnu_as
4592     return 0
4593 }
4594
4595 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4596     nogas=:
4597     enabled_any arm aarch64 && nogas=die
4598     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4599     as_noop=-v
4600
4601     case $as_type in
4602         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4603         gcc)  gaspp_as_type=gas ;;
4604         *)    gaspp_as_type=$as_type ;;
4605     esac
4606
4607     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4608
4609     test "${as#*gas-preprocessor.pl}" != "$as" ||
4610     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4611         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4612
4613     if ! check_gas ; then
4614         as=${gas:=$as}
4615         check_gas || \
4616             $nogas "GNU assembler not found, install/update gas-preprocessor"
4617     fi
4618
4619     check_as <<EOF && enable as_func
4620 .func test
4621 .endfunc
4622 EOF
4623 fi
4624
4625 check_inline_asm inline_asm_labels '"1:\n"'
4626
4627 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4628
4629 if enabled aarch64; then
4630     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4631     # internal assembler in clang 3.3 does not support this instruction
4632     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4633     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4634
4635     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4636
4637 elif enabled alpha; then
4638
4639     check_cflags -mieee
4640
4641 elif enabled arm; then
4642
4643     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4644 float func(float a, float b){ return a+b; }
4645 EOF
4646
4647     enabled thumb && check_cflags -mthumb || check_cflags -marm
4648
4649     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4650         enable vfp_args
4651     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4652         case "${cross_prefix:-$cc}" in
4653             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4654             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4655 __asm__ (".eabi_attribute 28, 1");
4656 int main(void) { return 0; }
4657 EOF
4658         esac
4659         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4660     fi
4661
4662     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4663     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4664     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4665     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4666     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4667     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4668     enabled setend  && check_insn setend  'setend be'
4669
4670     [ $target_os = linux ] || [ $target_os = android ] ||
4671         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4672             $ARCH_EXT_LIST_ARM
4673
4674     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4675
4676     check_as <<EOF && enable as_dn_directive
4677 ra .dn d0.i16
4678 .unreq ra
4679 EOF
4680
4681     # llvm's integrated assembler supports .object_arch from llvm 3.5
4682     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4683 .object_arch armv4
4684 EOF
4685
4686     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4687
4688 elif enabled mips; then
4689
4690     # Enable minimum ISA based on selected options
4691     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4692         add_cflags "-mips64r2"
4693         add_asflags "-mips64r2"
4694     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4695         add_cflags "-mips64"
4696         add_asflags "-mips64"
4697     elif enabled mipsdspr1 || enabled mipsdspr2; then
4698         add_cflags "-mips32r2 -mfp32"
4699         add_asflags "-mips32r2 -mfp32"
4700     elif enabled mips32r5 || enabled mips64r6; then
4701         check_cflags "-mfp64"
4702         check_ldflags "-mfp64"
4703     fi
4704
4705     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4706      check_ldflags "-mips32r5" &&
4707      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4708     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4709      check_ldflags "-mips64r6" &&
4710      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4711     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4712      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4713     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4714      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4715     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4716      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4717     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4718      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4719     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4720
4721     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4722     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4723     enabled msa && add_asflags "-mmsa"
4724
4725 elif enabled parisc; then
4726
4727     if enabled gcc; then
4728         case $($cc -dumpversion) in
4729             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4730         esac
4731     fi
4732
4733 elif enabled ppc; then
4734
4735     enable local_aligned_8 local_aligned_16 local_aligned_32
4736
4737     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4738     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4739     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4740     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4741
4742     # AltiVec flags: The FSF version of GCC differs from the Apple version
4743     if enabled altivec; then
4744         check_cflags -maltivec -mabi=altivec &&
4745         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4746         check_cflags -faltivec
4747
4748         # check if our compiler supports Motorola AltiVec C API
4749         check_cc <<EOF || disable altivec
4750 $inc_altivec_h
4751 int main(void) {
4752     vector signed int v1 = (vector signed int) { 0 };
4753     vector signed int v2 = (vector signed int) { 1 };
4754     v1 = vec_add(v1, v2);
4755     return 0;
4756 }
4757 EOF
4758
4759         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4760     fi
4761
4762     if enabled vsx; then
4763         check_cflags -mvsx
4764     fi
4765 elif enabled x86; then
4766
4767     check_builtin rdtsc    intrin.h   "__rdtsc()"
4768     check_builtin mm_empty mmintrin.h "_mm_empty()"
4769
4770     enable local_aligned_8 local_aligned_16 local_aligned_32
4771
4772     # check whether EBP is available on x86
4773     # As 'i' is stored on the stack, this program will crash
4774     # if the base pointer is used to access it because the
4775     # base pointer is cleared in the inline assembly code.
4776     check_exec_crash <<EOF && enable ebp_available
4777 volatile int i=0;
4778 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4779 return i;
4780 EOF
4781
4782     # check whether EBX is available on x86
4783     check_inline_asm ebx_available '""::"b"(0)' &&
4784         check_inline_asm ebx_available '"":::"%ebx"'
4785
4786     # check whether xmm clobbers are supported
4787     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4788
4789     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4790         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4791
4792     # check whether binutils is new enough to compile SSSE3/MMXEXT
4793     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4794     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4795
4796     if ! disabled_any asm mmx yasm; then
4797         if check_cmd $yasmexe --version; then
4798             enabled x86_64 && yasm_extra="-m amd64"
4799             yasm_debug="-g dwarf2"
4800         elif check_cmd nasm -v; then
4801             yasmexe=nasm
4802             yasm_debug="-g -F dwarf"
4803             if enabled x86_64; then
4804                 case "$objformat" in
4805                     elf)   objformat=elf64 ;;
4806                     win32) objformat=win64 ;;
4807                 esac
4808             fi
4809         fi
4810
4811         YASMFLAGS="-f $objformat $yasm_extra"
4812         enabled pic               && append YASMFLAGS "-DPIC"
4813         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4814         case "$objformat" in
4815             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4816         esac
4817
4818         check_yasm "movbe ecx, [5]" && enable yasm ||
4819             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4820         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4821         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4822         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4823         check_yasm "CPU amdnop" || disable cpunop
4824     fi
4825
4826     case "$cpu" in
4827         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4828             disable fast_clz
4829         ;;
4830     esac
4831
4832 fi
4833
4834 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4835
4836 check_ldflags -Wl,--as-needed
4837 check_ldflags -Wl,-z,noexecstack
4838
4839 if check_func dlopen; then
4840     ldl=
4841 elif check_func dlopen -ldl; then
4842     ldl=-ldl
4843 fi
4844
4845 frei0r_filter_extralibs='$ldl'
4846 frei0r_src_filter_extralibs='$ldl'
4847 ladspa_filter_extralibs='$ldl'
4848 nvenc_encoder_extralibs='$ldl'
4849
4850 if ! disabled network; then
4851     check_func getaddrinfo $network_extralibs
4852     check_func getservbyport $network_extralibs
4853     check_func inet_aton $network_extralibs
4854
4855     check_type netdb.h "struct addrinfo"
4856     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4857     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4858     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4859     check_type poll.h "struct pollfd"
4860     check_type netinet/sctp.h "struct sctp_event_subscribe"
4861     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4862     check_type netinet/in.h "struct sockaddr_in6"
4863     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4864     check_type "sys/types.h sys/socket.h" socklen_t
4865
4866     # Prefer arpa/inet.h over winsock2
4867     if check_header arpa/inet.h ; then
4868         check_func closesocket
4869     elif check_header winsock2.h ; then
4870         check_func_headers winsock2.h closesocket -lws2 &&
4871             network_extralibs="-lws2" ||
4872         { check_func_headers winsock2.h closesocket -lws2_32 &&
4873             network_extralibs="-lws2_32"; } || disable winsock2_h network
4874         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4875
4876         check_type ws2tcpip.h socklen_t
4877         check_type ws2tcpip.h "struct addrinfo"
4878         check_type ws2tcpip.h "struct group_source_req"
4879         check_type ws2tcpip.h "struct ip_mreq_source"
4880         check_type ws2tcpip.h "struct ipv6_mreq"
4881         check_type winsock2.h "struct pollfd"
4882         check_struct winsock2.h "struct sockaddr" sa_len
4883         check_type ws2tcpip.h "struct sockaddr_in6"
4884         check_type ws2tcpip.h "struct sockaddr_storage"
4885     else
4886         disable network
4887     fi
4888 fi
4889
4890 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4891 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4892 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4893 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4894 check_builtin sarestart signal.h "SA_RESTART"
4895 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4896
4897 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4898 check_func  ${malloc_prefix}memalign            && enable memalign
4899 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4900
4901 check_func  access
4902 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4903 check_func  fcntl
4904 check_func  fork
4905 check_func  gethrtime
4906 check_func  getopt
4907 check_func  getrusage
4908 check_func  gettimeofday
4909 check_func  gmtime_r
4910 check_func  isatty
4911 check_func  localtime_r
4912 check_func  mach_absolute_time
4913 check_func  mkstemp
4914 check_func  mmap
4915 check_func  mprotect
4916 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4917 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4918 check_func  sched_getaffinity
4919 check_func  setrlimit
4920 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4921 check_func  strerror_r
4922 check_func  sysconf
4923 check_func  sysctl
4924 check_func  usleep
4925
4926 check_func_headers conio.h kbhit
4927 check_func_headers io.h setmode
4928 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4929 check_func_headers stdlib.h getenv
4930
4931 check_func_headers windows.h CoTaskMemFree -lole32
4932 check_func_headers windows.h GetProcessAffinityMask
4933 check_func_headers windows.h GetProcessTimes
4934 check_func_headers windows.h GetSystemTimeAsFileTime
4935 check_func_headers windows.h MapViewOfFile
4936 check_func_headers windows.h PeekNamedPipe
4937 check_func_headers windows.h SetConsoleTextAttribute
4938 check_func_headers windows.h Sleep
4939 check_func_headers windows.h VirtualAlloc
4940 check_struct windows.h "CONDITION_VARIABLE" Ptr
4941 check_func_headers glob.h glob
4942 enabled xlib &&
4943     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4944
4945 check_header direct.h
4946 check_header dlfcn.h
4947 check_header dxva.h
4948 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4949 check_header io.h
4950 check_header libcrystalhd/libcrystalhd_if.h
4951 check_header mach/mach_time.h
4952 check_header malloc.h
4953 check_header net/udplite.h
4954 check_header poll.h
4955 check_header sys/mman.h
4956 check_header sys/param.h
4957 check_header sys/resource.h
4958 check_header sys/select.h
4959 check_header sys/time.h
4960 check_header sys/un.h
4961 check_header termios.h
4962 check_header unistd.h
4963 check_header valgrind/valgrind.h
4964 check_header vdpau/vdpau.h
4965 check_header vdpau/vdpau_x11.h
4966 check_header VideoDecodeAcceleration/VDADecoder.h
4967 check_header windows.h
4968 check_header X11/extensions/XvMClib.h
4969 check_header asm/types.h
4970
4971 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4972 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4973 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4974
4975 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4976
4977 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4978
4979 if ! disabled w32threads && ! enabled pthreads; then
4980     check_func_headers "windows.h process.h" _beginthreadex &&
4981         enable w32threads || disable w32threads
4982 fi
4983
4984 # check for some common methods of building with pthread support
4985 # do this before the optional library checks as some of them require pthreads
4986 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4987     enable pthreads
4988     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4989         add_cflags -pthread
4990         add_extralibs -pthread
4991     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4992         add_cflags -pthreads
4993         add_extralibs -pthreads
4994     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4995         add_cflags -ldl -pthread
4996         add_extralibs -ldl -pthread
4997     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4998         add_extralibs -lpthreadGC2
4999     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5000         :
5001     elif ! check_func pthread_join && ! check_func pthread_create; then
5002         disable pthreads
5003     fi
5004     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5005 fi
5006
5007
5008 if enabled pthreads; then
5009   check_func pthread_cancel
5010 fi
5011
5012 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5013 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5014 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5015
5016 check_lib math.h sin -lm && LIBM="-lm"
5017 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5018
5019 atan2f_args=2
5020 ldexpf_args=2
5021 powf_args=2
5022
5023 for func in $MATH_FUNCS; do
5024     eval check_mathfunc $func \${${func}_args:-1}
5025 done
5026
5027 # these are off by default, so fail if requested and not available
5028 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5029 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5030                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5031 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5032                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5033                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5034 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5035 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5036 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5037 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5038 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5039 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5040 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5041 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5042 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5043 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5044                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5045                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5046 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5047 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5048 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5049 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5050 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"
5051 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5052 enabled fontconfig        && enable libfontconfig
5053 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5054 enabled libfreetype       && require_libfreetype
5055 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5056 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5057 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5058                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5059                                done || die "ERROR: libgsm not found"; }
5060 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5061 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5062 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5063 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5064 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5065 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5066 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5067 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5068 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5069 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5070                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5071                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5072                                die "ERROR: libopenjpeg not found"; }
5073 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5074 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5075 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5076 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5077 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5078 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5079 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5080                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5081 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5082 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5083 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5084 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5085     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5086     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5087 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5088 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5089                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5090                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5091 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5092 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5093 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5094 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5095 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5096 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5097 enabled libvpx            && {
5098     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5099                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5100     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 ||
5101                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5102     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5103     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; } }
5104 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5105 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5106 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5107                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5108                                  warn "using libx264 without pkg-config"; } } &&
5109                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5110                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5111 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5112                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5113                                die "ERROR: libx265 version must be >= 57."; }
5114 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5115 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5116 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5117 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5118 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5119                                 { ! enabled cross_compile && {
5120                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5121                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5122                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5123                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5124                                die "ERROR: mmal not found"; }
5125 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5126                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5127                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5128                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5129 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5130                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5131                                die "ERROR: openal not found"; } &&
5132                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5133                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5134 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5135                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5136                                die "ERROR: opencl not found"; } &&
5137                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5138                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5139                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5140 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5141                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5142                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5143                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5144                                die "ERROR: opengl not found."
5145                              }
5146 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5147                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5148                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5149                                die "ERROR: openssl not found"; }
5150 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5151
5152 if enabled gnutls; then
5153     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5154     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5155 fi
5156
5157 # libdc1394 check
5158 if enabled libdc1394; then
5159     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5160         enable libdc1394_2; } ||
5161     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5162         enable libdc1394_1; } ||
5163     die "ERROR: No version of libdc1394 found "
5164 fi
5165 if ! disabled sdl; then
5166     SDL_CONFIG="${cross_prefix}sdl-config"
5167     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5168         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5169         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5170         enable sdl
5171     else
5172         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5173             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5174             sdl_libs=$("${SDL_CONFIG}" --libs)
5175             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5176             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5177             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5178             enable sdl
5179         elif enabled sdl ; then
5180             die "ERROR: SDL not found"
5181         else
5182             disable sdl
5183         fi
5184     fi
5185 fi
5186 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5187
5188 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5189 enabled makeinfo && (makeinfo --version | \
5190                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5191     && enable makeinfo_html || disable makeinfo_html
5192 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5193 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5194 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5195 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5196
5197 check_header linux/fb.h
5198 check_header linux/videodev.h
5199 check_header linux/videodev2.h
5200 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5201
5202 check_header sys/videoio.h
5203 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5204
5205 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5206 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5207 # w32api 3.12 had it defined wrong
5208 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5209
5210 check_type "dshow.h" IBaseFilter
5211
5212 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5213 { check_header dev/bktr/ioctl_meteor.h &&
5214   check_header dev/bktr/ioctl_bt848.h; } ||
5215 { check_header machine/ioctl_meteor.h &&
5216   check_header machine/ioctl_bt848.h; } ||
5217 { check_header dev/video/meteor/ioctl_meteor.h &&
5218   check_header dev/video/bktr/ioctl_bt848.h; } ||
5219 check_header dev/ic/bt8xx.h
5220
5221 check_header sndio.h
5222 if check_struct sys/soundcard.h audio_buf_info bytes; then
5223     enable_safe sys/soundcard.h
5224 else
5225     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5226     #include <sys/soundcard.h>
5227     audio_buf_info abc;
5228 EOF
5229 fi
5230 check_header soundcard.h
5231
5232 enabled_any alsa_indev alsa_outdev &&
5233     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5234
5235 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5236     check_func jack_port_get_latency_range -ljack
5237
5238 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5239
5240 if enabled libcdio; then
5241     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5242     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5243     die "ERROR: No usable libcdio/cdparanoia found"
5244 fi
5245
5246 enabled xlib &&
5247     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5248
5249 if ! disabled libxcb; then
5250     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5251         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5252     } && disable x11grab && enable libxcb
5253
5254 if enabled libxcb; then
5255     disabled libxcb_shm || {
5256         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5257             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5258         } && check_header sys/shm.h && enable libxcb_shm; }
5259
5260     disabled libxcb_xfixes || {
5261         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5262             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5263         } && enable libxcb_xfixes; }
5264
5265     disabled libxcb_shape || {
5266         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5267             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5268         } && enable libxcb_shape; }
5269
5270     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5271     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5272 fi
5273 fi
5274
5275 if enabled x11grab; then
5276     enabled xlib || die "ERROR: Xlib not found"
5277     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5278     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5279 fi
5280
5281 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5282
5283 enabled dxva2api_h &&
5284     check_cc <<EOF && enable dxva2api_cobj
5285 #define _WIN32_WINNT 0x0600
5286 #define COBJMACROS
5287 #include <windows.h>
5288 #include <d3d9.h>
5289 #include <dxva2api.h>
5290 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5291 EOF
5292
5293 enabled vaapi &&
5294     check_lib va/va.h vaInitialize -lva ||
5295     disable vaapi
5296
5297 enabled vaapi && enabled xlib &&
5298     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5299     enable vaapi_x11
5300
5301 enabled vdpau &&
5302     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5303     disable vdpau
5304
5305 enabled vdpau && enabled xlib &&
5306     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5307     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5308     enable vdpau_x11
5309
5310 # Funny iconv installations are not unusual, so check it after all flags have been set
5311 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5312
5313 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5314
5315 # add some useful compiler flags if supported
5316 check_cflags -Wdeclaration-after-statement
5317 check_cflags -Wall
5318 check_cflags -Wdisabled-optimization
5319 check_cflags -Wpointer-arith
5320 check_cflags -Wredundant-decls
5321 check_cflags -Wwrite-strings
5322 check_cflags -Wtype-limits
5323 check_cflags -Wundef
5324 check_cflags -Wmissing-prototypes
5325 check_cflags -Wno-pointer-to-int-cast
5326 check_cflags -Wstrict-prototypes
5327 check_cflags -Wempty-body
5328 enabled extra_warnings && check_cflags -Winline
5329
5330 check_disable_warning(){
5331     warning_flag=-W${1#-Wno-}
5332     test_cflags $warning_flag && add_cflags $1
5333 }
5334
5335 check_disable_warning -Wno-parentheses
5336 check_disable_warning -Wno-switch
5337 check_disable_warning -Wno-format-zero-length
5338 check_disable_warning -Wno-pointer-sign
5339
5340 # add some linker flags
5341 check_ldflags -Wl,--warn-common
5342 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5343 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5344 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5345
5346 # add some strip flags
5347 # -wN '..@*' is more selective than -x, but not available everywhere.
5348 check_stripflags -wN \'..@*\' || check_stripflags -x
5349
5350 enabled neon_clobber_test &&
5351     check_ldflags -Wl,--wrap,avcodec_open2              \
5352                   -Wl,--wrap,avcodec_decode_audio4      \
5353                   -Wl,--wrap,avcodec_decode_video2      \
5354                   -Wl,--wrap,avcodec_decode_subtitle2   \
5355                   -Wl,--wrap,avcodec_encode_audio2      \
5356                   -Wl,--wrap,avcodec_encode_video2      \
5357                   -Wl,--wrap,avcodec_encode_subtitle    \
5358                   -Wl,--wrap,swr_convert                \
5359                   -Wl,--wrap,avresample_convert ||
5360     disable neon_clobber_test
5361
5362 enabled xmm_clobber_test &&
5363     check_ldflags -Wl,--wrap,avcodec_open2              \
5364                   -Wl,--wrap,avcodec_decode_audio4      \
5365                   -Wl,--wrap,avcodec_decode_video2      \
5366                   -Wl,--wrap,avcodec_decode_subtitle2   \
5367                   -Wl,--wrap,avcodec_encode_audio2      \
5368                   -Wl,--wrap,avcodec_encode_video       \
5369                   -Wl,--wrap,avcodec_encode_video2      \
5370                   -Wl,--wrap,avcodec_encode_subtitle    \
5371                   -Wl,--wrap,swr_convert                \
5372                   -Wl,--wrap,avresample_convert         \
5373                   -Wl,--wrap,sws_scale ||
5374     disable xmm_clobber_test
5375
5376 echo "X{};" > $TMPV
5377 if test_ldflags -Wl,--version-script,$TMPV; then
5378     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5379     check_cc <<EOF && enable symver_asm_label
5380 void ff_foo(void) __asm__ ("av_foo@VERSION");
5381 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5382 EOF
5383     check_cc <<EOF && enable symver_gnu_asm
5384 __asm__(".symver ff_foo,av_foo@VERSION");
5385 void ff_foo(void) {}
5386 EOF
5387 fi
5388
5389 if [ -z "$optflags" ]; then
5390     if enabled small; then
5391         optflags=$cflags_size
5392     elif enabled optimizations; then
5393         optflags=$cflags_speed
5394     else
5395         optflags=$cflags_noopt
5396     fi
5397 fi
5398
5399 check_optflags(){
5400     check_cflags "$@"
5401     enabled lto && check_ldflags "$@"
5402 }
5403
5404
5405 if enabled lto; then
5406     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5407     check_cflags  -flto
5408     check_ldflags -flto $cpuflags
5409     disable inline_asm_direct_symbol_refs
5410 fi
5411
5412 check_optflags $optflags
5413 check_optflags -fno-math-errno
5414 check_optflags -fno-signed-zeros
5415
5416 enabled ftrapv && check_cflags -ftrapv
5417
5418 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5419 int x;
5420 EOF
5421
5422
5423 if enabled icc; then
5424     # Just warnings, no remarks
5425     check_cflags -w1
5426     # -wd: Disable following warnings
5427     # 144, 167, 556: -Wno-pointer-sign
5428     # 188: enumerated type mixed with another type
5429     # 1292: attribute "foo" ignored
5430     # 1419: external declaration in primary source file
5431     # 10006: ignoring unknown option -fno-signed-zeros
5432     # 10148: ignoring unknown option -Wno-parentheses
5433     # 10156: ignoring option '-W'; no argument required
5434     # 13200: No EMMS instruction before call to function
5435     # 13203: No EMMS instruction before return from function
5436     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5437     # 11030: Warning unknown option --as-needed
5438     # 10156: ignoring option '-export'; no argument required
5439     check_ldflags -wd10156,11030
5440     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5441     enable ebp_available
5442     # The test above does not test linking
5443     enabled lto && disable symver_asm_label
5444     if enabled x86_32; then
5445         icc_version=$($cc -dumpversion)
5446         test ${icc_version%%.*} -ge 11 &&
5447             check_cflags -falign-stack=maintain-16-byte ||
5448             disable aligned_stack
5449     fi
5450 elif enabled ccc; then
5451     # disable some annoying warnings
5452     add_cflags -msg_disable bitnotint
5453     add_cflags -msg_disable mixfuncvoid
5454     add_cflags -msg_disable nonstandcast
5455     add_cflags -msg_disable unsupieee
5456 elif enabled gcc; then
5457     check_optflags -fno-tree-vectorize
5458     check_cflags -Werror=format-security
5459     check_cflags -Werror=implicit-function-declaration
5460     check_cflags -Werror=missing-prototypes
5461     check_cflags -Werror=return-type
5462     check_cflags -Werror=vla
5463     check_cflags -Wformat
5464     check_cflags -fdiagnostics-color=auto
5465     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5466 elif enabled llvm_gcc; then
5467     check_cflags -mllvm -stack-alignment=16
5468 elif enabled clang; then
5469     check_cflags -mllvm -stack-alignment=16
5470     check_cflags -Qunused-arguments
5471     check_cflags -Werror=implicit-function-declaration
5472     check_cflags -Werror=missing-prototypes
5473     check_cflags -Werror=return-type
5474 elif enabled cparser; then
5475     add_cflags -Wno-missing-variable-declarations
5476     add_cflags -Wno-empty-statement
5477 elif enabled armcc; then
5478     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5479     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5480     # 2523: use of inline assembly is deprecated
5481     add_cflags -W${armcc_opt},--diag_suppress=2523
5482     add_cflags -W${armcc_opt},--diag_suppress=1207
5483     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5484     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5485     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5486     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5487 elif enabled tms470; then
5488     add_cflags -pds=824 -pds=837
5489     disable inline_asm
5490 elif enabled pathscale; then
5491     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5492 elif enabled_any msvc icl; then
5493     enabled x86_32 && disable aligned_stack
5494     enabled_all x86_32 debug && add_cflags -Oy-
5495     enabled debug && add_ldflags -debug
5496     enable pragma_deprecated
5497     if enabled icl; then
5498         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5499         # (correctly) on icl 13.x.
5500         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5501             add_cflags -Qansi-alias
5502         # Some inline asm is not compilable in debug
5503         if enabled debug; then
5504             disable ebp_available
5505             disable ebx_available
5506         fi
5507     fi
5508     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5509     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5510 fi
5511
5512 case $as_type in
5513     clang)
5514         add_asflags -Qunused-arguments
5515     ;;
5516 esac
5517
5518 case $ld_type in
5519     clang)
5520         check_ldflags -Qunused-arguments
5521     ;;
5522 esac
5523
5524 case $target_os in
5525     osf1)
5526         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5527     ;;
5528     plan9)
5529         add_cppflags -Dmain=plan9_main
5530     ;;
5531 esac
5532
5533 enable frame_thread_encoder
5534
5535 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5536
5537 check_deps $CONFIG_LIST       \
5538            $CONFIG_EXTRA      \
5539            $HAVE_LIST         \
5540            $ALL_COMPONENTS    \
5541
5542 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"
5543
5544
5545 if test $target_os = "haiku"; then
5546     disable memalign
5547     disable posix_memalign
5548 fi
5549
5550 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5551     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5552     enable dxva2_lib
5553
5554 ! enabled_any memalign posix_memalign aligned_malloc &&
5555     enabled simd_align_16 && enable memalign_hack
5556
5557 # add_dep lib dep
5558 # -> enable ${lib}_deps_${dep}
5559 # -> add $dep to ${lib}_deps only once
5560 add_dep() {
5561     lib=$1
5562     dep=$2
5563     enabled "${lib}_deps_${dep}" && return 0
5564     enable  "${lib}_deps_${dep}"
5565     prepend "${lib}_deps" $dep
5566 }
5567
5568 # merge deps lib components
5569 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5570 merge_deps() {
5571     lib=$1
5572     shift
5573     for comp in $*; do
5574         enabled $comp || continue
5575         eval "dep=\"\$${comp}_deps\""
5576         for d in $dep; do
5577             add_dep $lib $d
5578         done
5579     done
5580 }
5581
5582 merge_deps libavfilter $FILTER_LIST
5583
5584 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5585
5586 for thread in $THREADS_LIST; do
5587     if enabled $thread; then
5588         test -n "$thread_type" &&
5589             die "ERROR: Only one thread type must be selected." ||
5590             thread_type="$thread"
5591     fi
5592 done
5593
5594 enabled zlib && add_cppflags -DZLIB_CONST
5595
5596 # conditional library dependencies, in linking order
5597 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5598 enabled aresample_filter    && prepend avfilter_deps "swresample"
5599 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5600 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5601 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5602 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5603 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5604 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5605 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5606 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5607 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5608 enabled pan_filter          && prepend avfilter_deps "swresample"
5609 enabled pp_filter           && prepend avfilter_deps "postproc"
5610 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5611 enabled resample_filter && prepend avfilter_deps "avresample"
5612 enabled sab_filter          && prepend avfilter_deps "swscale"
5613 enabled scale_filter    && prepend avfilter_deps "swscale"
5614 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5615 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5616 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5617 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5618
5619 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5620
5621 enabled opus_decoder    && prepend avcodec_deps "swresample"
5622
5623 expand_deps(){
5624     lib_deps=${1}_deps
5625     eval "deps=\$$lib_deps"
5626     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5627     unique $lib_deps
5628 }
5629
5630 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5631 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5632
5633 map 'expand_deps $v' $LIBRARY_LIST
5634
5635 echo "install prefix            $prefix"
5636 echo "source path               $source_path"
5637 echo "C compiler                $cc"
5638 echo "C library                 $libc_type"
5639 if test "$host_cc" != "$cc"; then
5640     echo "host C compiler           $host_cc"
5641     echo "host C library            $host_libc_type"
5642 fi
5643 echo "ARCH                      $arch ($cpu)"
5644 if test "$build_suffix" != ""; then
5645     echo "build suffix              $build_suffix"
5646 fi
5647 if test "$progs_suffix" != ""; then
5648     echo "progs suffix              $progs_suffix"
5649 fi
5650 if test "$extra_version" != ""; then
5651     echo "version string suffix     $extra_version"
5652 fi
5653 echo "big-endian                ${bigendian-no}"
5654 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5655 if enabled x86; then
5656     echo "${yasmexe}                      ${yasm-no}"
5657     echo "MMX enabled               ${mmx-no}"
5658     echo "MMXEXT enabled            ${mmxext-no}"
5659     echo "3DNow! enabled            ${amd3dnow-no}"
5660     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5661     echo "SSE enabled               ${sse-no}"
5662     echo "SSSE3 enabled             ${ssse3-no}"
5663     echo "AVX enabled               ${avx-no}"
5664     echo "XOP enabled               ${xop-no}"
5665     echo "FMA3 enabled              ${fma3-no}"
5666     echo "FMA4 enabled              ${fma4-no}"
5667     echo "i686 features enabled     ${i686-no}"
5668     echo "CMOV is fast              ${fast_cmov-no}"
5669     echo "EBX available             ${ebx_available-no}"
5670     echo "EBP available             ${ebp_available-no}"
5671 fi
5672 if enabled aarch64; then
5673     echo "NEON enabled              ${neon-no}"
5674     echo "VFP enabled               ${vfp-no}"
5675 fi
5676 if enabled arm; then
5677     echo "ARMv5TE enabled           ${armv5te-no}"
5678     echo "ARMv6 enabled             ${armv6-no}"
5679     echo "ARMv6T2 enabled           ${armv6t2-no}"
5680     echo "VFP enabled               ${vfp-no}"
5681     echo "NEON enabled              ${neon-no}"
5682     echo "THUMB enabled             ${thumb-no}"
5683 fi
5684 if enabled mips; then
5685     echo "MIPS FPU enabled          ${mipsfpu-no}"
5686     echo "MIPS32R5 enabled          ${mips32r5-no}"
5687     echo "MIPS64R6 enabled          ${mips64r6-no}"
5688     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5689     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5690     echo "MIPS MSA enabled          ${msa-no}"
5691     echo "LOONGSON3 enabled         ${loongson3-no}"
5692 fi
5693 if enabled ppc; then
5694     echo "AltiVec enabled           ${altivec-no}"
5695     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5696     echo "PPC VSX optimizations     ${vsx-no}"
5697     echo "dcbzl available           ${dcbzl-no}"
5698 fi
5699 echo "debug symbols             ${debug-no}"
5700 echo "strip symbols             ${stripping-no}"
5701 echo "optimize for size         ${small-no}"
5702 echo "optimizations             ${optimizations-no}"
5703 echo "static                    ${static-no}"
5704 echo "shared                    ${shared-no}"
5705 echo "postprocessing support    ${postproc-no}"
5706 echo "new filter support        ${avfilter-no}"
5707 echo "network support           ${network-no}"
5708 echo "threading support         ${thread_type-no}"
5709 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5710 echo "SDL support               ${sdl-no}"
5711 echo "opencl enabled            ${opencl-no}"
5712 echo "texi2html enabled         ${texi2html-no}"
5713 echo "perl enabled              ${perl-no}"
5714 echo "pod2man enabled           ${pod2man-no}"
5715 echo "makeinfo enabled          ${makeinfo-no}"
5716 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5717 test -n "$random_seed" &&
5718     echo "random seed               ${random_seed}"
5719 echo
5720
5721 echo "External libraries:"
5722 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5723 echo
5724
5725 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5726     echo "Enabled ${type}s:"
5727     eval list=\$$(toupper $type)_LIST
5728     print_enabled '_*' $list | print_3_columns
5729     echo
5730 done
5731
5732 license="LGPL version 2.1 or later"
5733 if enabled nonfree; then
5734     license="nonfree and unredistributable"
5735 elif enabled gplv3; then
5736     license="GPL version 3 or later"
5737 elif enabled lgplv3; then
5738     license="LGPL version 3 or later"
5739 elif enabled gpl; then
5740     license="GPL version 2 or later"
5741 fi
5742
5743 echo "License: $license"
5744
5745 echo "Creating config.mak, config.h, and doc/config.texi..."
5746
5747 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5748
5749 enabled stripping || strip="echo skipping strip"
5750
5751 config_files="$TMPH config.mak doc/config.texi"
5752
5753 cat > config.mak <<EOF
5754 # Automatically generated by configure - do not modify!
5755 ifndef FFMPEG_CONFIG_MAK
5756 FFMPEG_CONFIG_MAK=1
5757 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5758 prefix=$prefix
5759 LIBDIR=\$(DESTDIR)$libdir
5760 SHLIBDIR=\$(DESTDIR)$shlibdir
5761 INCDIR=\$(DESTDIR)$incdir
5762 BINDIR=\$(DESTDIR)$bindir
5763 DATADIR=\$(DESTDIR)$datadir
5764 DOCDIR=\$(DESTDIR)$docdir
5765 MANDIR=\$(DESTDIR)$mandir
5766 SRC_PATH=$source_path
5767 ifndef MAIN_MAKEFILE
5768 SRC_PATH:=\$(SRC_PATH:.%=..%)
5769 endif
5770 CC_IDENT=$cc_ident
5771 ARCH=$arch
5772 INTRINSICS=$intrinsics
5773 CC=$cc
5774 CXX=$cxx
5775 AS=$as
5776 LD=$ld
5777 DEPCC=$dep_cc
5778 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5779 DEPAS=$as
5780 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5781 YASM=$yasmexe
5782 DEPYASM=$yasmexe
5783 AR=$ar
5784 ARFLAGS=$arflags
5785 AR_O=$ar_o
5786 RANLIB=$ranlib
5787 STRIP=$strip
5788 CP=cp -p
5789 LN_S=$ln_s
5790 CPPFLAGS=$CPPFLAGS
5791 CFLAGS=$CFLAGS
5792 CXXFLAGS=$CXXFLAGS
5793 ASFLAGS=$ASFLAGS
5794 AS_C=$AS_C
5795 AS_O=$AS_O
5796 CC_C=$CC_C
5797 CC_E=$CC_E
5798 CC_O=$CC_O
5799 CXX_C=$CXX_C
5800 CXX_O=$CXX_O
5801 LD_O=$LD_O
5802 LD_LIB=$LD_LIB
5803 LD_PATH=$LD_PATH
5804 DLLTOOL=$dlltool
5805 WINDRES=$windres
5806 DEPWINDRES=$dep_cc
5807 DOXYGEN=$doxygen
5808 LDFLAGS=$LDFLAGS
5809 LDEXEFLAGS=$LDEXEFLAGS
5810 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5811 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5812 YASMFLAGS=$YASMFLAGS
5813 BUILDSUF=$build_suffix
5814 PROGSSUF=$progs_suffix
5815 FULLNAME=$FULLNAME
5816 LIBPREF=$LIBPREF
5817 LIBSUF=$LIBSUF
5818 LIBNAME=$LIBNAME
5819 SLIBPREF=$SLIBPREF
5820 SLIBSUF=$SLIBSUF
5821 EXESUF=$EXESUF
5822 EXTRA_VERSION=$extra_version
5823 CCDEP=$CCDEP
5824 CXXDEP=$CXXDEP
5825 CCDEP_FLAGS=$CCDEP_FLAGS
5826 ASDEP=$ASDEP
5827 ASDEP_FLAGS=$ASDEP_FLAGS
5828 CC_DEPFLAGS=$CC_DEPFLAGS
5829 AS_DEPFLAGS=$AS_DEPFLAGS
5830 HOSTCC=$host_cc
5831 HOSTLD=$host_ld
5832 HOSTCFLAGS=$host_cflags
5833 HOSTCPPFLAGS=$host_cppflags
5834 HOSTEXESUF=$HOSTEXESUF
5835 HOSTLDFLAGS=$host_ldflags
5836 HOSTLIBS=$host_libs
5837 DEPHOSTCC=$host_cc
5838 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5839 HOSTCCDEP=$HOSTCCDEP
5840 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5841 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5842 HOSTCC_C=$HOSTCC_C
5843 HOSTCC_O=$HOSTCC_O
5844 HOSTLD_O=$HOSTLD_O
5845 TARGET_EXEC=$target_exec $target_exec_args
5846 TARGET_PATH=$target_path
5847 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5848 CFLAGS-ffplay=$sdl_cflags
5849 ZLIB=$($ldflags_filter -lz)
5850 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5851 EXTRALIBS=$extralibs
5852 COMPAT_OBJS=$compat_objs
5853 EXEOBJS=$exeobjs
5854 INSTALL=$install
5855 LIBTARGET=${LIBTARGET}
5856 SLIBNAME=${SLIBNAME}
5857 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5858 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5859 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5860 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5861 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5862 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5863 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5864 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5865 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5866 NOREDZONE_FLAGS=$noredzone_flags
5867 EOF
5868
5869 get_version(){
5870     lcname=lib${1}
5871     name=$(toupper $lcname)
5872     file=$source_path/$lcname/version.h
5873     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5874     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5875     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5876     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5877     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5878     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5879 }
5880
5881 map 'get_version $v' $LIBRARY_LIST
5882
5883 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5884
5885 print_program_libs(){
5886     eval "program_libs=\$${1}_libs"
5887     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5888 }
5889
5890 map 'print_program_libs $v' $PROGRAM_LIST
5891
5892 cat > $TMPH <<EOF
5893 /* Automatically generated by configure - do not modify! */
5894 #ifndef FFMPEG_CONFIG_H
5895 #define FFMPEG_CONFIG_H
5896 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5897 #define FFMPEG_LICENSE "$(c_escape $license)"
5898 #define CONFIG_THIS_YEAR 2015
5899 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5900 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5901 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5902 #define av_restrict $_restrict
5903 #define EXTERN_PREFIX "${extern_prefix}"
5904 #define EXTERN_ASM ${extern_prefix}
5905 #define BUILDSUF "$build_suffix"
5906 #define SLIBSUF "$SLIBSUF"
5907 #define HAVE_MMX2 HAVE_MMXEXT
5908 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5909 EOF
5910
5911 test -n "$assert_level" &&
5912     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5913
5914 test -n "$malloc_prefix" &&
5915     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5916
5917 if enabled yasm; then
5918     append config_files $TMPASM
5919     printf '' >$TMPASM
5920 fi
5921
5922 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5923
5924
5925 mkdir -p doc
5926 mkdir -p tests
5927 echo "@c auto-generated by configure" > doc/config.texi
5928
5929 print_config ARCH_   "$config_files" $ARCH_LIST
5930 print_config HAVE_   "$config_files" $HAVE_LIST
5931 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5932                                      $CONFIG_EXTRA      \
5933                                      $ALL_COMPONENTS    \
5934
5935 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5936 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5937
5938 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5939 cp_if_changed $TMPH config.h
5940 touch .config
5941
5942 enabled yasm && cp_if_changed $TMPASM config.asm
5943
5944 cat > $TMPH <<EOF
5945 /* Generated by ffconf */
5946 #ifndef AVUTIL_AVCONFIG_H
5947 #define AVUTIL_AVCONFIG_H
5948 EOF
5949
5950 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5951
5952 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5953
5954 cp_if_changed $TMPH libavutil/avconfig.h
5955
5956 if test -n "$WARNINGS"; then
5957     printf "\n$WARNINGS"
5958     enabled fatal_warnings && exit 1
5959 fi
5960
5961 # build pkg-config files
5962
5963 lib_version(){
5964     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5965 }
5966
5967 pkgconfig_generate(){
5968     name=$1
5969     shortname=${name#lib}${build_suffix}
5970     comment=$2
5971     version=$3
5972     libs=$4
5973     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5974     requires=${requires%, }
5975     enabled ${name#lib} || return 0
5976     mkdir -p $name
5977     cat <<EOF > $name/$name${build_suffix}.pc
5978 prefix=$prefix
5979 exec_prefix=\${prefix}
5980 libdir=$libdir
5981 includedir=$incdir
5982
5983 Name: $name
5984 Description: $comment
5985 Version: $version
5986 Requires: $(enabled shared || echo $requires)
5987 Requires.private: $(enabled shared && echo $requires)
5988 Conflicts:
5989 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5990 Libs.private: $(enabled shared && echo $libs)
5991 Cflags: -I\${includedir}
5992 EOF
5993
5994 mkdir -p doc/examples/pc-uninstalled
5995 includedir=${source_path}
5996 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5997     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5998 prefix=
5999 exec_prefix=
6000 libdir=\${pcfiledir}/../../../$name
6001 includedir=${includedir}
6002
6003 Name: $name
6004 Description: $comment
6005 Version: $version
6006 Requires: $requires
6007 Conflicts:
6008 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6009 Cflags: -I\${includedir}
6010 EOF
6011 }
6012
6013 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6014 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6015 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6016 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6017 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6018 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6019 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6020 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6021 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"