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   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 200   --enable-frei0r          enable frei0r video filtering [no]
 201   --enable-gnutls          enable gnutls, needed for https support
 202                            if openssl is not used [no]
 203   --disable-iconv          disable iconv [autodetect]
 204   --enable-ladspa          enable LADSPA audio filtering [no]
 205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 206   --enable-libass          enable libass subtitles rendering,
 207                            needed for subtitles and ass filter [no]
 208   --enable-libbluray       enable BluRay reading using libbluray [no]
 209   --enable-libbs2b         enable bs2b DSP library [no]
 210   --enable-libcaca         enable textual display using libcaca [no]
 211   --enable-libcelt         enable CELT decoding via libcelt [no]
 212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 214                            and libraw1394 [no]
 215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 216   --enable-libfaac         enable AAC encoding via libfaac [no]
 217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 221   --enable-libgme          enable Game Music Emu via libgme [no]
 222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 225   --enable-libmfx          enable HW acceleration through libmfx
 226   --enable-libmodplug      enable ModPlug via libmodplug [no]
 227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 228   --enable-libnut          enable NUT (de)muxing via libnut,
 229                            native (de)muxer exists [no]
 230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 232   --enable-libopencv       enable video filtering via libopencv [no]
 233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 235   --enable-libopus         enable Opus de/encoding via libopus [no]
 236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 237   --enable-libquvi         enable quvi input via libquvi [no]
 238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 242   --enable-libsoxr         enable Include libsoxr resampling [no]
 243   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 244   --enable-libssh          enable SFTP protocol via libssh [no]
 245   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 246   --enable-libtheora       enable Theora encoding via libtheora [no]
 247   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 248   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 249   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 250   --enable-libvidstab      enable video stabilization using vid.stab [no]
 251   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 252   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 253   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 254                            native implementation exists [no]
 255   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 256   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 257   --enable-libwebp         enable WebP encoding via libwebp [no]
 258   --enable-libx264         enable H.264 encoding via x264 [no]
 259   --enable-libx265         enable HEVC encoding via x265 [no]
 260   --enable-libxavs         enable AVS encoding via xavs [no]
 261   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 262   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 263   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 264   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 265   --enable-libxvid         enable Xvid encoding via xvidcore,
 266                            native MPEG-4/Xvid encoder exists [no]
 267   --enable-libzmq          enable message passing via libzmq [no]
 268   --enable-libzvbi         enable teletext support via libzvbi [no]
 269   --disable-lzma           disable lzma [autodetect]
 270   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 271   --enable-mmal            enable decoding via MMAL [no]
 272   --enable-nvenc           enable NVIDIA NVENC support [no]
 273   --enable-openal          enable OpenAL 1.1 capture support [no]
 274   --enable-opencl          enable OpenCL code
 275   --enable-opengl          enable OpenGL rendering [no]
 276   --enable-openssl         enable openssl, needed for https support
 277                            if gnutls is not used [no]
 278   --disable-sdl            disable sdl [autodetect]
 279   --enable-x11grab         enable X11 grabbing (legacy) [no]
 280   --disable-xlib           disable xlib [autodetect]
 281   --disable-zlib           disable zlib [autodetect]
 282
 283 Toolchain options:
 284   --arch=ARCH              select architecture [$arch]
 285   --cpu=CPU                select the minimum required CPU (affects
 286                            instruction selection, may crash on older CPUs)
 287   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 288   --progs-suffix=SUFFIX    program name suffix []
 289   --enable-cross-compile   assume a cross-compiler is used
 290   --sysroot=PATH           root of cross-build tree
 291   --sysinclude=PATH        location of cross-build system headers
 292   --target-os=OS           compiler targets OS [$target_os]
 293   --target-exec=CMD        command to run executables on target
 294   --target-path=DIR        path to view of build directory on target
 295   --target-samples=DIR     path to samples directory on target
 296   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 297   --toolchain=NAME         set tool defaults according to NAME
 298   --nm=NM                  use nm tool NM [$nm_default]
 299   --ar=AR                  use archive tool AR [$ar_default]
 300   --as=AS                  use assembler AS [$as_default]
 301   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 302   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 303   --cc=CC                  use C compiler CC [$cc_default]
 304   --cxx=CXX                use C compiler CXX [$cxx_default]
 305   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 306   --ld=LD                  use linker LD [$ld_default]
 307   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 308   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 309   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 310   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 311   --host-cc=HOSTCC         use host C compiler HOSTCC
 312   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 313   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 314   --host-ld=HOSTLD         use host linker HOSTLD
 315   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 316   --host-libs=HLIBS        use libs HLIBS when linking for host
 317   --host-os=OS             compiler host OS [$target_os]
 318   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 319   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 320   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 321   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 322   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 323   --extra-version=STRING   version string suffix []
 324   --optflags=OPTFLAGS      override optimization-related compiler flags
 325   --build-suffix=SUFFIX    library name suffix []
 326   --enable-pic             build position-independent code
 327   --enable-thumb           compile for Thumb instruction set
 328   --enable-lto             use link-time optimization
 329
 330 Advanced options (experts only):
 331   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 332   --disable-symver         disable symbol versioning
 333   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 334   --disable-safe-bitstream-reader
 335                            disable buffer boundary checking in bitreaders
 336                            (faster, but may crash)
 337   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 338   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 339
 340 Optimization options (experts only):
 341   --disable-asm            disable all assembly optimizations
 342   --disable-altivec        disable AltiVec optimizations
 343   --disable-amd3dnow       disable 3DNow! optimizations
 344   --disable-amd3dnowext    disable 3DNow! extended optimizations
 345   --disable-mmx            disable MMX optimizations
 346   --disable-mmxext         disable MMXEXT optimizations
 347   --disable-sse            disable SSE optimizations
 348   --disable-sse2           disable SSE2 optimizations
 349   --disable-sse3           disable SSE3 optimizations
 350   --disable-ssse3          disable SSSE3 optimizations
 351   --disable-sse4           disable SSE4 optimizations
 352   --disable-sse42          disable SSE4.2 optimizations
 353   --disable-avx            disable AVX optimizations
 354   --disable-xop            disable XOP optimizations
 355   --disable-fma3           disable FMA3 optimizations
 356   --disable-fma4           disable FMA4 optimizations
 357   --disable-avx2           disable AVX2 optimizations
 358   --disable-armv5te        disable armv5te optimizations
 359   --disable-armv6          disable armv6 optimizations
 360   --disable-armv6t2        disable armv6t2 optimizations
 361   --disable-vfp            disable VFP optimizations
 362   --disable-neon           disable NEON optimizations
 363   --disable-inline-asm     disable use of inline assembly
 364   --disable-yasm           disable use of nasm/yasm assembly
 365   --disable-mips32r5       disable MIPS32R5 optimizations
 366   --disable-mips64r6       disable MIPS64R6 optimizations
 367   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 368   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 369   --disable-msa            disable MSA optimizations
 370   --disable-mipsfpu        disable floating point MIPS optimizations
 371   --disable-loongson3      disable Loongson-3 SIMD optimizations
 372   --disable-fast-unaligned consider unaligned accesses slow
 373
 374 Developer options (useful when working on FFmpeg itself):
 375   --disable-debug          disable debugging symbols
 376   --enable-debug=LEVEL     set the debug level [$debuglevel]
 377   --disable-optimizations  disable compiler optimizations
 378   --enable-extra-warnings  enable more compiler warnings
 379   --disable-stripping      disable stripping of executables and shared libraries
 380   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 381                            2 causes a slowdown at runtime.
 382   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 383   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 384                            leaks and errors, using the specified valgrind binary.
 385                            Cannot be combined with --target-exec
 386   --enable-ftrapv          Trap arithmetic overflows
 387   --samples=PATH           location of test samples for FATE, if not set use
 388                            \$FATE_SAMPLES at make invocation time.
 389   --enable-neon-clobber-test check NEON registers for clobbering (should be
 390                            used only for debugging purposes)
 391   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 392                            should be used only for debugging purposes)
 393   --enable-random          randomly enable/disable components
 394   --disable-random
 395   --enable-random=LIST     randomly enable/disable specific components or
 396   --disable-random=LIST    component groups. LIST is a comma-separated list
 397                            of NAME[:PROB] entries where NAME is a component
 398                            (group) and PROB the probability associated with
 399                            NAME (default 0.5).
 400   --random-seed=VALUE      seed value for --enable/disable-random
 401   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 402                            (only applies to --disable-optimizations builds)
 403
 404 NOTE: Object files are built at the place where configure is launched.
 405 EOF
 406   exit 0
 407 }
 408
 409 quotes='""'
 410
 411 log(){
 412     echo "$@" >> $logfile
 413 }
 414
 415 log_file(){
 416     log BEGIN $1
 417     pr -n -t $1 >> $logfile
 418     log END $1
 419 }
 420
 421 echolog(){
 422     log "$@"
 423     echo "$@"
 424 }
 425
 426 warn(){
 427     log "WARNING: $*"
 428     WARNINGS="${WARNINGS}WARNING: $*\n"
 429 }
 430
 431 die(){
 432     echolog "$@"
 433     cat <<EOF
 434
 435 If you think configure made a mistake, make sure you are using the latest
 436 version from Git.  If the latest version fails, report the problem to the
 437 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 438 EOF
 439     if disabled logging; then
 440         cat <<EOF
 441 Rerun configure with logging enabled (do not use --disable-logging), and
 442 include the log this produces with your report.
 443 EOF
 444     else
 445         cat <<EOF
 446 Include the log file "$logfile" produced by configure as this will help
 447 solve the problem.
 448 EOF
 449     fi
 450     exit 1
 451 }
 452
 453 # Avoid locale weirdness, besides we really just want to translate ASCII.
 454 toupper(){
 455     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 456 }
 457
 458 tolower(){
 459     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 460 }
 461
 462 c_escape(){
 463     echo "$*" | sed 's/["\\]/\\\0/g'
 464 }
 465
 466 sh_quote(){
 467     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 468     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 469     echo "$v"
 470 }
 471
 472 cleanws(){
 473     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 474 }
 475
 476 filter(){
 477     pat=$1
 478     shift
 479     for v; do
 480         eval "case $v in $pat) echo $v ;; esac"
 481     done
 482 }
 483
 484 filter_out(){
 485     pat=$1
 486     shift
 487     for v; do
 488         eval "case $v in $pat) ;; *) echo $v ;; esac"
 489     done
 490 }
 491
 492 map(){
 493     m=$1
 494     shift
 495     for v; do eval $m; done
 496 }
 497
 498 add_suffix(){
 499     suffix=$1
 500     shift
 501     for v; do echo ${v}${suffix}; done
 502 }
 503
 504 set_all(){
 505     value=$1
 506     shift
 507     for var in $*; do
 508         eval $var=$value
 509     done
 510 }
 511
 512 set_weak(){
 513     value=$1
 514     shift
 515     for var; do
 516         eval : \${$var:=$value}
 517     done
 518 }
 519
 520 sanitize_var_name(){
 521     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 522 }
 523
 524 set_safe(){
 525     var=$1
 526     shift
 527     eval $(sanitize_var_name "$var")='$*'
 528 }
 529
 530 get_safe(){
 531     eval echo \$$(sanitize_var_name "$1")
 532 }
 533
 534 pushvar(){
 535     for pvar in $*; do
 536         eval level=\${${pvar}_level:=0}
 537         eval ${pvar}_${level}="\$$pvar"
 538         eval ${pvar}_level=$(($level+1))
 539     done
 540 }
 541
 542 popvar(){
 543     for pvar in $*; do
 544         eval level=\${${pvar}_level:-0}
 545         test $level = 0 && continue
 546         eval level=$(($level-1))
 547         eval $pvar="\${${pvar}_${level}}"
 548         eval ${pvar}_level=$level
 549         eval unset ${pvar}_${level}
 550     done
 551 }
 552
 553 enable(){
 554     set_all yes $*
 555 }
 556
 557 disable(){
 558     set_all no $*
 559 }
 560
 561 enable_weak(){
 562     set_weak yes $*
 563 }
 564
 565 disable_weak(){
 566     set_weak no $*
 567 }
 568
 569 enable_safe(){
 570     for var; do
 571         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 572     done
 573 }
 574
 575 disable_safe(){
 576     for var; do
 577         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 578     done
 579 }
 580
 581 do_enable_deep(){
 582     for var; do
 583         enabled $var && continue
 584         eval sel="\$${var}_select"
 585         eval sgs="\$${var}_suggest"
 586         pushvar var sgs
 587         enable_deep $sel
 588         popvar sgs
 589         enable_deep_weak $sgs
 590         popvar var
 591     done
 592 }
 593
 594 enable_deep(){
 595     do_enable_deep $*
 596     enable $*
 597 }
 598
 599 enable_deep_weak(){
 600     for var; do
 601         disabled $var && continue
 602         pushvar var
 603         do_enable_deep $var
 604         popvar var
 605         enable_weak $var
 606     done
 607 }
 608
 609 enabled(){
 610     test "${1#!}" = "$1" && op== || op=!=
 611     eval test "x\$${1#!}" $op "xyes"
 612 }
 613
 614 disabled(){
 615     test "${1#!}" = "$1" && op== || op=!=
 616     eval test "x\$${1#!}" $op "xno"
 617 }
 618
 619 enabled_all(){
 620     for opt; do
 621         enabled $opt || return 1
 622     done
 623 }
 624
 625 disabled_all(){
 626     for opt; do
 627         disabled $opt || return 1
 628     done
 629 }
 630
 631 enabled_any(){
 632     for opt; do
 633         enabled $opt && return 0
 634     done
 635 }
 636
 637 disabled_any(){
 638     for opt; do
 639         disabled $opt && return 0
 640     done
 641     return 1
 642 }
 643
 644 set_default(){
 645     for opt; do
 646         eval : \${$opt:=\$${opt}_default}
 647     done
 648 }
 649
 650 is_in(){
 651     value=$1
 652     shift
 653     for var in $*; do
 654         [ $var = $value ] && return 0
 655     done
 656     return 1
 657 }
 658
 659 do_check_deps(){
 660     for cfg; do
 661         cfg="${cfg#!}"
 662         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 663         disabled ${cfg}_checking && continue
 664         enable ${cfg}_checking
 665         append allopts $cfg
 666
 667         eval dep_all="\$${cfg}_deps"
 668         eval dep_any="\$${cfg}_deps_any"
 669         eval dep_sel="\$${cfg}_select"
 670         eval dep_sgs="\$${cfg}_suggest"
 671         eval dep_ifa="\$${cfg}_if"
 672         eval dep_ifn="\$${cfg}_if_any"
 673
 674         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 675         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 676         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 677
 678         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 679         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 680         enabled_all  $dep_all || disable $cfg
 681         enabled_any  $dep_any || disable $cfg
 682         disabled_any $dep_sel && disable $cfg
 683
 684         if enabled $cfg; then
 685             enable_deep $dep_sel
 686             enable_deep_weak $dep_sgs
 687         fi
 688
 689         disable ${cfg}_checking
 690     done
 691 }
 692
 693 check_deps(){
 694     unset allopts
 695
 696     do_check_deps "$@"
 697
 698     for cfg in $allopts; do
 699         enabled $cfg || continue
 700         eval dep_extralibs="\$${cfg}_extralibs"
 701         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 702     done
 703 }
 704
 705 print_config(){
 706     pfx=$1
 707     files=$2
 708     shift 2
 709     map 'eval echo "$v \${$v:-no}"' "$@" |
 710     awk "BEGIN { split(\"$files\", files) }
 711         {
 712             c = \"$pfx\" toupper(\$1);
 713             v = \$2;
 714             sub(/yes/, 1, v);
 715             sub(/no/,  0, v);
 716             for (f in files) {
 717                 file = files[f];
 718                 if (file ~ /\\.h\$/) {
 719                     printf(\"#define %s %d\\n\", c, v) >>file;
 720                 } else if (file ~ /\\.asm\$/) {
 721                     printf(\"%%define %s %d\\n\", c, v) >>file;
 722                 } else if (file ~ /\\.mak\$/) {
 723                     n = -v ? \"\" : \"!\";
 724                     printf(\"%s%s=yes\\n\", n, c) >>file;
 725                 } else if (file ~ /\\.texi\$/) {
 726                     pre = -v ? \"\" : \"@c \";
 727                     yesno = \$2;
 728                     c2 = tolower(c);
 729                     gsub(/_/, \"-\", c2);
 730                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 731                 }
 732             }
 733         }"
 734 }
 735
 736 print_enabled(){
 737     suf=$1
 738     shift
 739     for v; do
 740         enabled $v && printf "%s\n" ${v%$suf};
 741     done
 742 }
 743
 744 append(){
 745     var=$1
 746     shift
 747     eval "$var=\"\$$var $*\""
 748 }
 749
 750 prepend(){
 751     var=$1
 752     shift
 753     eval "$var=\"$* \$$var\""
 754 }
 755
 756 unique(){
 757     var=$1
 758     uniq_list=""
 759     for tok in $(eval echo \$$var); do
 760         uniq_list="$(filter_out $tok $uniq_list) $tok"
 761     done
 762     eval "$var=\"${uniq_list}\""
 763 }
 764
 765 add_cppflags(){
 766     append CPPFLAGS "$@"
 767 }
 768
 769 add_cflags(){
 770     append CFLAGS $($cflags_filter "$@")
 771 }
 772
 773 add_cxxflags(){
 774     append CXXFLAGS $($cflags_filter "$@")
 775 }
 776
 777 add_asflags(){
 778     append ASFLAGS $($asflags_filter "$@")
 779 }
 780
 781 add_ldflags(){
 782     append LDFLAGS $($ldflags_filter "$@")
 783 }
 784
 785 add_ldexeflags(){
 786     append LDEXEFLAGS $($ldflags_filter "$@")
 787 }
 788
 789 add_stripflags(){
 790     append ASMSTRIPFLAGS "$@"
 791 }
 792
 793 add_extralibs(){
 794     prepend extralibs $($ldflags_filter "$@")
 795 }
 796
 797 add_host_cppflags(){
 798     append host_cppflags "$@"
 799 }
 800
 801 add_host_cflags(){
 802     append host_cflags $($host_cflags_filter "$@")
 803 }
 804
 805 add_host_ldflags(){
 806     append host_ldflags $($host_ldflags_filter "$@")
 807 }
 808
 809 add_compat(){
 810     append compat_objs $1
 811     shift
 812     map 'add_cppflags -D$v' "$@"
 813 }
 814
 815 check_cmd(){
 816     log "$@"
 817     "$@" >> $logfile 2>&1
 818 }
 819
 820 check_stat(){
 821     log check_stat "$@"
 822     stat "$1" >> $logfile 2>&1
 823 }
 824
 825 cc_o(){
 826     eval printf '%s\\n' $CC_O
 827 }
 828
 829 cc_e(){
 830     eval printf '%s\\n' $CC_E
 831 }
 832
 833 check_cc(){
 834     log check_cc "$@"
 835     cat > $TMPC
 836     log_file $TMPC
 837     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 838 }
 839
 840 check_cxx(){
 841     log check_cxx "$@"
 842     cat > $TMPCPP
 843     log_file $TMPCPP
 844     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 845 }
 846
 847 check_oc(){
 848     log check_oc "$@"
 849     cat > $TMPM
 850     log_file $TMPM
 851     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 852 }
 853
 854 check_cpp(){
 855     log check_cpp "$@"
 856     cat > $TMPC
 857     log_file $TMPC
 858     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 859 }
 860
 861 as_o(){
 862     eval printf '%s\\n' $AS_O
 863 }
 864
 865 check_as(){
 866     log check_as "$@"
 867     cat > $TMPS
 868     log_file $TMPS
 869     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 870 }
 871
 872 check_inline_asm(){
 873     log check_inline_asm "$@"
 874     name="$1"
 875     code="$2"
 876     shift 2
 877     disable $name
 878     check_cc "$@" <<EOF && enable $name
 879 void foo(void){ __asm__ volatile($code); }
 880 EOF
 881 }
 882
 883 check_insn(){
 884     log check_insn "$@"
 885     check_inline_asm ${1}_inline "\"$2\""
 886     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 887 }
 888
 889 check_yasm(){
 890     log check_yasm "$@"
 891     echo "$1" > $TMPS
 892     log_file $TMPS
 893     shift 1
 894     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 895 }
 896
 897 ld_o(){
 898     eval printf '%s\\n' $LD_O
 899 }
 900
 901 check_ld(){
 902     log check_ld "$@"
 903     type=$1
 904     shift 1
 905     flags=$(filter_out '-l*|*.so' $@)
 906     libs=$(filter '-l*|*.so' $@)
 907     check_$type $($cflags_filter $flags) || return
 908     flags=$($ldflags_filter $flags)
 909     libs=$($ldflags_filter $libs)
 910     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 911 }
 912
 913 print_include(){
 914     hdr=$1
 915     test "${hdr%.h}" = "${hdr}" &&
 916         echo "#include $hdr"    ||
 917         echo "#include <$hdr>"
 918 }
 919
 920 check_code(){
 921     log check_code "$@"
 922     check=$1
 923     headers=$2
 924     code=$3
 925     shift 3
 926     {
 927         for hdr in $headers; do
 928             print_include $hdr
 929         done
 930         echo "int main(void) { $code; return 0; }"
 931     } | check_$check "$@"
 932 }
 933
 934 check_cppflags(){
 935     log check_cppflags "$@"
 936     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 937 int x;
 938 EOF
 939 }
 940
 941 test_cflags(){
 942     log test_cflags "$@"
 943     set -- $($cflags_filter "$@")
 944     check_cc "$@" <<EOF
 945 int x;
 946 EOF
 947 }
 948
 949 check_cflags(){
 950     log check_cflags "$@"
 951     test_cflags "$@" && add_cflags "$@"
 952 }
 953
 954 check_cxxflags(){
 955     log check_cxxflags "$@"
 956     set -- $($cflags_filter "$@")
 957     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 958 int x;
 959 EOF
 960 }
 961
 962 test_ldflags(){
 963     log test_ldflags "$@"
 964     check_ld "cc" "$@" <<EOF
 965 int main(void){ return 0; }
 966 EOF
 967 }
 968
 969 check_ldflags(){
 970     log check_ldflags "$@"
 971     test_ldflags "$@" && add_ldflags "$@"
 972 }
 973
 974 test_stripflags(){
 975     log test_stripflags "$@"
 976     # call check_cc to get a fresh TMPO
 977     check_cc <<EOF
 978 int main(void) { return 0; }
 979 EOF
 980     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 981 }
 982
 983 check_stripflags(){
 984     log check_stripflags "$@"
 985     test_stripflags "$@" && add_stripflags "$@"
 986 }
 987
 988 check_header(){
 989     log check_header "$@"
 990     header=$1
 991     shift
 992     disable_safe $header
 993     check_cpp "$@" <<EOF && enable_safe $header
 994 #include <$header>
 995 int x;
 996 EOF
 997 }
 998
 999 check_header_oc(){
1000     log check_header_oc "$@"
1001     rm -f -- "$TMPO"
1002     header=$1
1003     shift
1004     disable_safe $header
1005     {
1006        echo "#include <$header>"
1007        echo "int main(void) { return 0; }"
1008     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1009 }
1010
1011 check_func(){
1012     log check_func "$@"
1013     func=$1
1014     shift
1015     disable $func
1016     check_ld "cc" "$@" <<EOF && enable $func
1017 extern int $func();
1018 int main(void){ $func(); }
1019 EOF
1020 }
1021
1022 check_mathfunc(){
1023     log check_mathfunc "$@"
1024     func=$1
1025     narg=$2
1026     shift 2
1027     test $narg = 2 && args="f, g" || args="f"
1028     disable $func
1029     check_ld "cc" "$@" <<EOF && enable $func
1030 #include <math.h>
1031 float foo(float f, float g) { return $func($args); }
1032 int main(void){ return (int) foo; }
1033 EOF
1034 }
1035
1036 check_func_headers(){
1037     log check_func_headers "$@"
1038     headers=$1
1039     funcs=$2
1040     shift 2
1041     {
1042         for hdr in $headers; do
1043             print_include $hdr
1044         done
1045         for func in $funcs; do
1046             echo "long check_$func(void) { return (long) $func; }"
1047         done
1048         echo "int main(void) { return 0; }"
1049     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1050 }
1051
1052 check_class_headers_cpp(){
1053     log check_class_headers_cpp "$@"
1054     headers=$1
1055     classes=$2
1056     shift 2
1057     {
1058         for hdr in $headers; do
1059             echo "#include <$hdr>"
1060         done
1061         echo "int main(void) { "
1062         i=1
1063         for class in $classes; do
1064             echo "$class obj$i;"
1065             i=$(expr $i + 1)
1066         done
1067         echo "return 0; }"
1068     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1069 }
1070
1071 check_cpp_condition(){
1072     log check_cpp_condition "$@"
1073     header=$1
1074     condition=$2
1075     shift 2
1076     check_cpp "$@" <<EOF
1077 #include <$header>
1078 #if !($condition)
1079 #error "unsatisfied condition: $condition"
1080 #endif
1081 EOF
1082 }
1083
1084 check_lib(){
1085     log check_lib "$@"
1086     header="$1"
1087     func="$2"
1088     shift 2
1089     check_header $header && check_func $func "$@" && add_extralibs "$@"
1090 }
1091
1092 check_lib2(){
1093     log check_lib2 "$@"
1094     headers="$1"
1095     funcs="$2"
1096     shift 2
1097     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1098 }
1099
1100 check_lib_cpp(){
1101     log check_lib_cpp "$@"
1102     headers="$1"
1103     classes="$2"
1104     shift 2
1105     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1106 }
1107
1108 check_pkg_config(){
1109     log check_pkg_config "$@"
1110     pkgandversion="$1"
1111     pkg="${1%% *}"
1112     headers="$2"
1113     funcs="$3"
1114     shift 3
1115     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1116     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1117     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1118     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1119         set_safe ${pkg}_cflags $pkg_cflags   &&
1120         set_safe ${pkg}_libs   $pkg_libs
1121 }
1122
1123 check_exec(){
1124     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1125 }
1126
1127 check_exec_crash(){
1128     code=$(cat)
1129
1130     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1131     # are safe but may not be available everywhere.  Thus we use
1132     # raise(SIGTERM) instead.  The check is run in a subshell so we
1133     # can redirect the "Terminated" message from the shell.  SIGBUS
1134     # is not defined by standard C so it is used conditionally.
1135
1136     (check_exec "$@") >> $logfile 2>&1 <<EOF
1137 #include <signal.h>
1138 static void sighandler(int sig){
1139     raise(SIGTERM);
1140 }
1141 int foo(void){
1142     $code
1143 }
1144 int (*func_ptr)(void) = foo;
1145 int main(void){
1146     signal(SIGILL, sighandler);
1147     signal(SIGFPE, sighandler);
1148     signal(SIGSEGV, sighandler);
1149 #ifdef SIGBUS
1150     signal(SIGBUS, sighandler);
1151 #endif
1152     return func_ptr();
1153 }
1154 EOF
1155 }
1156
1157 check_type(){
1158     log check_type "$@"
1159     headers=$1
1160     type=$2
1161     shift 2
1162     disable_safe "$type"
1163     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1164 }
1165
1166 check_struct(){
1167     log check_struct "$@"
1168     headers=$1
1169     struct=$2
1170     member=$3
1171     shift 3
1172     disable_safe "${struct}_${member}"
1173     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1174         enable_safe "${struct}_${member}"
1175 }
1176
1177 check_builtin(){
1178     log check_builtin "$@"
1179     name=$1
1180     headers=$2
1181     builtin=$3
1182     shift 3
1183     disable "$name"
1184     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1185 }
1186
1187 check_compile_assert(){
1188     log check_compile_assert "$@"
1189     name=$1
1190     headers=$2
1191     condition=$3
1192     shift 3
1193     disable "$name"
1194     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1195 }
1196
1197 require(){
1198     name="$1"
1199     header="$2"
1200     func="$3"
1201     shift 3
1202     check_lib $header $func "$@" || die "ERROR: $name not found"
1203 }
1204
1205 require2(){
1206     name="$1"
1207     headers="$2"
1208     func="$3"
1209     shift 3
1210     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1211 }
1212
1213 require_cpp(){
1214     name="$1"
1215     headers="$2"
1216     classes="$3"
1217     shift 3
1218     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1219 }
1220
1221 use_pkg_config(){
1222     pkg="$1"
1223     check_pkg_config "$@" || return 1
1224     add_cflags    $(get_safe ${pkg}_cflags)
1225     add_extralibs $(get_safe ${pkg}_libs)
1226 }
1227
1228 require_pkg_config(){
1229     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1230 }
1231
1232 require_libfreetype(){
1233     log require_libfreetype "$@"
1234     pkg="freetype2"
1235     check_cmd $pkg_config --exists --print-errors $pkg \
1236       || die "ERROR: $pkg not found"
1237     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1238     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1239     {
1240         echo "#include <ft2build.h>"
1241         echo "#include FT_FREETYPE_H"
1242         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1243         echo "int main(void) { return 0; }"
1244     } | check_ld "cc" $pkg_cflags $pkg_libs \
1245       && set_safe ${pkg}_cflags $pkg_cflags \
1246       && set_safe ${pkg}_libs   $pkg_libs \
1247       || die "ERROR: $pkg not found"
1248     add_cflags    $(get_safe ${pkg}_cflags)
1249     add_extralibs $(get_safe ${pkg}_libs)
1250 }
1251
1252 hostcc_e(){
1253     eval printf '%s\\n' $HOSTCC_E
1254 }
1255
1256 hostcc_o(){
1257     eval printf '%s\\n' $HOSTCC_O
1258 }
1259
1260 check_host_cc(){
1261     log check_host_cc "$@"
1262     cat > $TMPC
1263     log_file $TMPC
1264     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1265 }
1266
1267 check_host_cpp(){
1268     log check_host_cpp "$@"
1269     cat > $TMPC
1270     log_file $TMPC
1271     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1272 }
1273
1274 check_host_cppflags(){
1275     log check_host_cppflags "$@"
1276     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1277 int x;
1278 EOF
1279 }
1280
1281 check_host_cflags(){
1282     log check_host_cflags "$@"
1283     set -- $($host_cflags_filter "$@")
1284     check_host_cc "$@" <<EOF && append host_cflags "$@"
1285 int x;
1286 EOF
1287 }
1288
1289 check_host_cpp_condition(){
1290     log check_host_cpp_condition "$@"
1291     header=$1
1292     condition=$2
1293     shift 2
1294     check_host_cpp "$@" <<EOF
1295 #include <$header>
1296 #if !($condition)
1297 #error "unsatisfied condition: $condition"
1298 #endif
1299 EOF
1300 }
1301
1302 apply(){
1303     file=$1
1304     shift
1305     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1306 }
1307
1308 cp_if_changed(){
1309     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1310     mkdir -p "$(dirname $2)"
1311     $cp_f "$1" "$2"
1312 }
1313
1314 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1315 # system-dependent things.
1316
1317 COMPONENT_LIST="
1318     bsfs
1319     decoders
1320     demuxers
1321     encoders
1322     filters
1323     hwaccels
1324     indevs
1325     muxers
1326     outdevs
1327     parsers
1328     protocols
1329 "
1330
1331 EXAMPLE_LIST="
1332     avio_reading_example
1333     avio_list_dir_example
1334     decoding_encoding_example
1335     demuxing_decoding_example
1336     extract_mvs_example
1337     filter_audio_example
1338     filtering_audio_example
1339     filtering_video_example
1340     metadata_example
1341     muxing_example
1342     qsvdec_example
1343     remuxing_example
1344     resampling_audio_example
1345     scaling_video_example
1346     transcode_aac_example
1347     transcoding_example
1348 "
1349
1350 EXTERNAL_LIBRARY_LIST="
1351     avisynth
1352     bzlib
1353     crystalhd
1354     decklink
1355     frei0r
1356     gnutls
1357     iconv
1358     ladspa
1359     libaacplus
1360     libass
1361     libbluray
1362     libbs2b
1363     libcaca
1364     libcdio
1365     libcelt
1366     libdc1394
1367     libdcadec
1368     libfaac
1369     libfdk_aac
1370     libflite
1371     libfontconfig
1372     libfreetype
1373     libfribidi
1374     libgme
1375     libgsm
1376     libiec61883
1377     libilbc
1378     libmfx
1379     libmodplug
1380     libmp3lame
1381     libnut
1382     libopencore_amrnb
1383     libopencore_amrwb
1384     libopencv
1385     libopenh264
1386     libopenjpeg
1387     libopus
1388     libpulse
1389     libquvi
1390     librtmp
1391     libschroedinger
1392     libshine
1393     libsmbclient
1394     libsoxr
1395     libspeex
1396     libssh
1397     libstagefright_h264
1398     libtheora
1399     libtwolame
1400     libutvideo
1401     libv4l2
1402     libvidstab
1403     libvo_aacenc
1404     libvo_amrwbenc
1405     libvorbis
1406     libvpx
1407     libwavpack
1408     libwebp
1409     libx264
1410     libx265
1411     libxavs
1412     libxcb
1413     libxcb_shm
1414     libxcb_shape
1415     libxcb_xfixes
1416     libxvid
1417     libzmq
1418     libzvbi
1419     lzma
1420     mmal
1421     nvenc
1422     openal
1423     opencl
1424     opengl
1425     openssl
1426     sdl
1427     x11grab
1428     xlib
1429     zlib
1430 "
1431
1432 DOCUMENT_LIST="
1433     doc
1434     htmlpages
1435     manpages
1436     podpages
1437     txtpages
1438 "
1439
1440 FEATURE_LIST="
1441     ftrapv
1442     gray
1443     hardcoded_tables
1444     runtime_cpudetect
1445     safe_bitstream_reader
1446     shared
1447     small
1448     static
1449     swscale_alpha
1450 "
1451
1452 HWACCEL_LIST="
1453     d3d11va
1454     dxva2
1455     vaapi
1456     vda
1457     vdpau
1458     xvmc
1459 "
1460
1461 LIBRARY_LIST="
1462     avcodec
1463     avdevice
1464     avfilter
1465     avformat
1466     avresample
1467     avutil
1468     postproc
1469     swresample
1470     swscale
1471 "
1472
1473 LICENSE_LIST="
1474     gpl
1475     nonfree
1476     version3
1477 "
1478
1479 PROGRAM_LIST="
1480     ffplay
1481     ffprobe
1482     ffserver
1483     ffmpeg
1484 "
1485
1486 SUBSYSTEM_LIST="
1487     dct
1488     dwt
1489     error_resilience
1490     faan
1491     fast_unaligned
1492     fft
1493     lsp
1494     lzo
1495     mdct
1496     pixelutils
1497     network
1498     rdft
1499 "
1500
1501 CONFIG_LIST="
1502     $COMPONENT_LIST
1503     $DOCUMENT_LIST
1504     $EXAMPLE_LIST
1505     $EXTERNAL_LIBRARY_LIST
1506     $FEATURE_LIST
1507     $HWACCEL_LIST
1508     $LICENSE_LIST
1509     $LIBRARY_LIST
1510     $PROGRAM_LIST
1511     $SUBSYSTEM_LIST
1512     fontconfig
1513     incompatible_libav_abi
1514     memalign_hack
1515     memory_poisoning
1516     neon_clobber_test
1517     pic
1518     pod2man
1519     raise_major
1520     thumb
1521     valgrind_backtrace
1522     xmm_clobber_test
1523 "
1524
1525 THREADS_LIST="
1526     pthreads
1527     os2threads
1528     w32threads
1529 "
1530
1531 ATOMICS_LIST="
1532     atomics_gcc
1533     atomics_suncc
1534     atomics_win32
1535 "
1536
1537 ARCH_LIST="
1538     aarch64
1539     alpha
1540     arm
1541     avr32
1542     avr32_ap
1543     avr32_uc
1544     bfin
1545     ia64
1546     m68k
1547     mips
1548     mips64
1549     parisc
1550     ppc
1551     ppc64
1552     s390
1553     sh4
1554     sparc
1555     sparc64
1556     tilegx
1557     tilepro
1558     tomi
1559     x86
1560     x86_32
1561     x86_64
1562 "
1563
1564 ARCH_EXT_LIST_ARM="
1565     armv5te
1566     armv6
1567     armv6t2
1568     armv8
1569     neon
1570     vfp
1571     vfpv3
1572     setend
1573 "
1574
1575 ARCH_EXT_LIST_MIPS="
1576     mipsfpu
1577     mips32r2
1578     mips32r5
1579     mips64r6
1580     mipsdspr1
1581     mipsdspr2
1582     msa
1583 "
1584
1585 ARCH_EXT_LIST_LOONGSON="
1586     loongson3
1587 "
1588
1589 ARCH_EXT_LIST_X86_SIMD="
1590     amd3dnow
1591     amd3dnowext
1592     avx
1593     avx2
1594     fma3
1595     fma4
1596     mmx
1597     mmxext
1598     sse
1599     sse2
1600     sse3
1601     sse4
1602     sse42
1603     ssse3
1604     xop
1605 "
1606
1607 ARCH_EXT_LIST_PPC="
1608     altivec
1609     dcbzl
1610     ldbrx
1611     ppc4xx
1612     vsx
1613 "
1614
1615 ARCH_EXT_LIST_X86="
1616     $ARCH_EXT_LIST_X86_SIMD
1617     cpunop
1618     i686
1619 "
1620
1621 ARCH_EXT_LIST="
1622     $ARCH_EXT_LIST_ARM
1623     $ARCH_EXT_LIST_PPC
1624     $ARCH_EXT_LIST_X86
1625     $ARCH_EXT_LIST_MIPS
1626     $ARCH_EXT_LIST_LOONGSON
1627 "
1628
1629 ARCH_FEATURES="
1630     aligned_stack
1631     fast_64bit
1632     fast_clz
1633     fast_cmov
1634     local_aligned_8
1635     local_aligned_16
1636     local_aligned_32
1637     simd_align_16
1638 "
1639
1640 BUILTIN_LIST="
1641     atomic_cas_ptr
1642     atomic_compare_exchange
1643     machine_rw_barrier
1644     MemoryBarrier
1645     mm_empty
1646     rdtsc
1647     sarestart
1648     sync_val_compare_and_swap
1649 "
1650 HAVE_LIST_CMDLINE="
1651     inline_asm
1652     symver
1653     yasm
1654 "
1655
1656 HAVE_LIST_PUB="
1657     bigendian
1658     fast_unaligned
1659     incompatible_libav_abi
1660 "
1661
1662 HEADERS_LIST="
1663     alsa_asoundlib_h
1664     altivec_h
1665     arpa_inet_h
1666     asm_types_h
1667     cdio_paranoia_h
1668     cdio_paranoia_paranoia_h
1669     dev_bktr_ioctl_bt848_h
1670     dev_bktr_ioctl_meteor_h
1671     dev_ic_bt8xx_h
1672     dev_video_bktr_ioctl_bt848_h
1673     dev_video_meteor_ioctl_meteor_h
1674     direct_h
1675     dlfcn_h
1676     d3d11_h
1677     dxva_h
1678     ES2_gl_h
1679     gsm_h
1680     io_h
1681     mach_mach_time_h
1682     machine_ioctl_bt848_h
1683     machine_ioctl_meteor_h
1684     malloc_h
1685     openjpeg_1_5_openjpeg_h
1686     OpenGL_gl3_h
1687     poll_h
1688     sndio_h
1689     soundcard_h
1690     sys_mman_h
1691     sys_param_h
1692     sys_resource_h
1693     sys_select_h
1694     sys_soundcard_h
1695     sys_time_h
1696     sys_un_h
1697     sys_videoio_h
1698     termios_h
1699     udplite_h
1700     unistd_h
1701     valgrind_valgrind_h
1702     windows_h
1703     winsock2_h
1704 "
1705
1706 INTRINSICS_LIST="
1707     intrinsics_neon
1708 "
1709
1710 MATH_FUNCS="
1711     atanf
1712     atan2f
1713     cbrt
1714     cbrtf
1715     cosf
1716     exp2
1717     exp2f
1718     expf
1719     isinf
1720     isnan
1721     ldexpf
1722     llrint
1723     llrintf
1724     log2
1725     log2f
1726     log10f
1727     lrint
1728     lrintf
1729     powf
1730     rint
1731     round
1732     roundf
1733     sinf
1734     trunc
1735     truncf
1736 "
1737
1738 SYSTEM_FUNCS="
1739     access
1740     aligned_malloc
1741     clock_gettime
1742     closesocket
1743     CommandLineToArgvW
1744     CoTaskMemFree
1745     CryptGenRandom
1746     dlopen
1747     fcntl
1748     flt_lim
1749     fork
1750     getaddrinfo
1751     gethrtime
1752     getopt
1753     GetProcessAffinityMask
1754     GetProcessMemoryInfo
1755     GetProcessTimes
1756     getrusage
1757     getservbyport
1758     GetSystemTimeAsFileTime
1759     gettimeofday
1760     glob
1761     glXGetProcAddress
1762     gmtime_r
1763     inet_aton
1764     isatty
1765     jack_port_get_latency_range
1766     kbhit
1767     localtime_r
1768     lzo1x_999_compress
1769     mach_absolute_time
1770     MapViewOfFile
1771     memalign
1772     mkstemp
1773     mmap
1774     mprotect
1775     nanosleep
1776     PeekNamedPipe
1777     posix_memalign
1778     pthread_cancel
1779     sched_getaffinity
1780     SetConsoleTextAttribute
1781     setmode
1782     setrlimit
1783     Sleep
1784     strerror_r
1785     sysconf
1786     sysctl
1787     usleep
1788     VirtualAlloc
1789     wglGetProcAddress
1790 "
1791
1792 TOOLCHAIN_FEATURES="
1793     as_dn_directive
1794     as_func
1795     as_object_arch
1796     asm_mod_q
1797     attribute_may_alias
1798     attribute_packed
1799     ebp_available
1800     ebx_available
1801     gnu_as
1802     gnu_windres
1803     ibm_asm
1804     inline_asm_labels
1805     inline_asm_nonlocal_labels
1806     inline_asm_direct_symbol_refs
1807     pragma_deprecated
1808     rsync_contimeout
1809     symver_asm_label
1810     symver_gnu_asm
1811     vfp_args
1812     xform_asm
1813     xmm_clobbers
1814 "
1815
1816 TYPES_LIST="
1817     CONDITION_VARIABLE_Ptr
1818     DXVA_PicParams_HEVC
1819     ID3D11VideoDecoder
1820     socklen_t
1821     struct_addrinfo
1822     struct_group_source_req
1823     struct_ip_mreq_source
1824     struct_ipv6_mreq
1825     struct_pollfd
1826     struct_rusage_ru_maxrss
1827     struct_sctp_event_subscribe
1828     struct_sockaddr_in6
1829     struct_sockaddr_sa_len
1830     struct_sockaddr_storage
1831     struct_stat_st_mtim_tv_nsec
1832     struct_v4l2_frmivalenum_discrete
1833 "
1834
1835 HAVE_LIST="
1836     $ARCH_EXT_LIST
1837     $(add_suffix _external $ARCH_EXT_LIST)
1838     $(add_suffix _inline   $ARCH_EXT_LIST)
1839     $ARCH_FEATURES
1840     $ATOMICS_LIST
1841     $BUILTIN_LIST
1842     $HAVE_LIST_CMDLINE
1843     $HAVE_LIST_PUB
1844     $HEADERS_LIST
1845     $INTRINSICS_LIST
1846     $MATH_FUNCS
1847     $SYSTEM_FUNCS
1848     $THREADS_LIST
1849     $TOOLCHAIN_FEATURES
1850     $TYPES_LIST
1851     atomics_native
1852     dos_paths
1853     d3d11_cobj
1854     d3d11va_lib
1855     dxva2api_cobj
1856     dxva2_lib
1857     libc_msvcrt
1858     libdc1394_1
1859     libdc1394_2
1860     makeinfo
1861     makeinfo_html
1862     perl
1863     pod2man
1864     sdl
1865     section_data_rel_ro
1866     texi2html
1867     threads
1868     vaapi_x11
1869     vdpau_x11
1870     xlib
1871 "
1872
1873 # options emitted with CONFIG_ prefix but not available on the command line
1874 CONFIG_EXTRA="
1875     aandcttables
1876     ac3dsp
1877     audio_frame_queue
1878     audiodsp
1879     blockdsp
1880     bswapdsp
1881     cabac
1882     dvprofile
1883     exif
1884     faandct
1885     faanidct
1886     fdctdsp
1887     fmtconvert
1888     frame_thread_encoder
1889     gcrypt
1890     golomb
1891     gplv3
1892     h263dsp
1893     h264chroma
1894     h264dsp
1895     h264pred
1896     h264qpel
1897     hpeldsp
1898     huffman
1899     huffyuvdsp
1900     huffyuvencdsp
1901     idctdsp
1902     iirfilter
1903     imdct15
1904     intrax8
1905     jpegtables
1906     lgplv3
1907     llauddsp
1908     llviddsp
1909     lpc
1910     me_cmp
1911     mpeg_er
1912     mpegaudio
1913     mpegaudiodsp
1914     mpegvideo
1915     mpegvideoenc
1916     nettle
1917     pixblockdsp
1918     qpeldsp
1919     qsv
1920     qsvdec
1921     qsvenc
1922     rangecoder
1923     riffdec
1924     riffenc
1925     rtpdec
1926     rtpenc_chain
1927     sinewin
1928     startcode
1929     tpeldsp
1930     videodsp
1931     vp3dsp
1932     wma_freqs
1933 "
1934
1935 CMDLINE_SELECT="
1936     $ARCH_EXT_LIST
1937     $CONFIG_LIST
1938     $HAVE_LIST_CMDLINE
1939     $THREADS_LIST
1940     asm
1941     cross_compile
1942     debug
1943     extra_warnings
1944     logging
1945     lto
1946     optimizations
1947     rpath
1948     stripping
1949 "
1950
1951 PATHS_LIST="
1952     bindir
1953     datadir
1954     docdir
1955     incdir
1956     libdir
1957     mandir
1958     pkgconfigdir
1959     prefix
1960     shlibdir
1961 "
1962
1963 CMDLINE_SET="
1964     $PATHS_LIST
1965     ar
1966     arch
1967     as
1968     assert_level
1969     build_suffix
1970     cc
1971     cpu
1972     cross_prefix
1973     cxx
1974     dep_cc
1975     doxygen
1976     extra_version
1977     gas
1978     host_cc
1979     host_cflags
1980     host_ld
1981     host_ldflags
1982     host_libs
1983     host_os
1984     install
1985     ld
1986     logfile
1987     malloc_prefix
1988     nm
1989     optflags
1990     pkg_config
1991     pkg_config_flags
1992     progs_suffix
1993     random_seed
1994     ranlib
1995     samples
1996     strip
1997     sws_max_filter_size
1998     sysinclude
1999     sysroot
2000     target_exec
2001     target_os
2002     target_path
2003     target_samples
2004     tempprefix
2005     toolchain
2006     valgrind
2007     yasmexe
2008 "
2009
2010 CMDLINE_APPEND="
2011     extra_cflags
2012     extra_cxxflags
2013     host_cppflags
2014 "
2015
2016 # code dependency declarations
2017
2018 # architecture extensions
2019
2020 armv5te_deps="arm"
2021 armv6_deps="arm"
2022 armv6t2_deps="arm"
2023 armv8_deps="aarch64"
2024 neon_deps_any="aarch64 arm"
2025 intrinsics_neon_deps="neon"
2026 vfp_deps_any="aarch64 arm"
2027 vfpv3_deps="vfp"
2028 setend_deps="arm"
2029
2030 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2031
2032 mipsfpu_deps="mips"
2033 mipsdspr1_deps="mips"
2034 mipsdspr2_deps="mips"
2035 mips32r2_deps="mips"
2036 mips32r5_deps="mips"
2037 mips64r6_deps="mips"
2038 msa_deps="mips"
2039 loongson3_deps="mips"
2040
2041 altivec_deps="ppc"
2042 dcbzl_deps="ppc"
2043 ldbrx_deps="ppc"
2044 ppc4xx_deps="ppc"
2045 vsx_deps="ppc"
2046
2047 cpunop_deps="i686"
2048 x86_64_select="i686"
2049 x86_64_suggest="fast_cmov"
2050
2051 amd3dnow_deps="mmx"
2052 amd3dnowext_deps="amd3dnow"
2053 i686_deps="x86"
2054 mmx_deps="x86"
2055 mmxext_deps="mmx"
2056 sse_deps="mmxext"
2057 sse2_deps="sse"
2058 sse3_deps="sse2"
2059 ssse3_deps="sse3"
2060 sse4_deps="ssse3"
2061 sse42_deps="sse4"
2062 avx_deps="sse42"
2063 xop_deps="avx"
2064 fma3_deps="avx"
2065 fma4_deps="avx"
2066 avx2_deps="avx"
2067
2068 mmx_external_deps="yasm"
2069 mmx_inline_deps="inline_asm"
2070 mmx_suggest="mmx_external mmx_inline"
2071
2072 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2073     eval dep=\$${ext}_deps
2074     eval ${ext}_external_deps='"${dep}_external"'
2075     eval ${ext}_inline_deps='"${dep}_inline"'
2076     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2077 done
2078
2079 aligned_stack_if_any="aarch64 ppc x86"
2080 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2081 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2082 fast_unaligned_if_any="aarch64 ppc x86"
2083 simd_align_16_if_any="altivec neon sse"
2084
2085 # system capabilities
2086 symver_if_any="symver_asm_label symver_gnu_asm"
2087 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2088
2089 # threading support
2090 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2091 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2092 atomics_win32_if="MemoryBarrier"
2093 atomics_native_if_any="$ATOMICS_LIST"
2094 w32threads_deps="atomics_native"
2095 threads_if_any="$THREADS_LIST"
2096
2097 # subsystems
2098 dct_select="rdft"
2099 error_resilience_select="me_cmp"
2100 faandct_deps="faan fdctdsp"
2101 faanidct_deps="faan idctdsp"
2102 frame_thread_encoder_deps="encoders threads"
2103 intrax8_select="error_resilience"
2104 mdct_select="fft"
2105 rdft_select="fft"
2106 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2107 mpeg_er_select="error_resilience"
2108 mpegaudio_select="mpegaudiodsp"
2109 mpegaudiodsp_select="dct"
2110 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2111 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2112 qsvdec_select="qsv"
2113 qsvenc_select="qsv"
2114
2115 # decoders / encoders
2116 aac_decoder_select="imdct15 mdct sinewin"
2117 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2118 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2119 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2120 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2121 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2122 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2123 aic_decoder_select="golomb idctdsp"
2124 alac_encoder_select="lpc"
2125 als_decoder_select="bswapdsp"
2126 amrnb_decoder_select="lsp"
2127 amrwb_decoder_select="lsp"
2128 amv_decoder_select="sp5x_decoder exif"
2129 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2130 ape_decoder_select="bswapdsp llauddsp"
2131 apng_decoder_select="zlib"
2132 apng_encoder_select="huffyuvencdsp zlib"
2133 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2134 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2135 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2136 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2137 atrac1_decoder_select="mdct sinewin"
2138 atrac3_decoder_select="mdct"
2139 atrac3p_decoder_select="mdct sinewin"
2140 avrn_decoder_select="exif jpegtables"
2141 bink_decoder_select="blockdsp hpeldsp"
2142 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2143 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2144 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2145 cllc_decoder_select="bswapdsp"
2146 comfortnoise_encoder_select="lpc"
2147 cook_decoder_select="audiodsp mdct sinewin"
2148 cscd_decoder_select="lzo"
2149 cscd_decoder_suggest="zlib"
2150 dca_decoder_select="fmtconvert mdct"
2151 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2152 dnxhd_decoder_select="blockdsp idctdsp"
2153 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2154 dvvideo_decoder_select="dvprofile idctdsp"
2155 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2156 dxa_decoder_select="zlib"
2157 eac3_decoder_select="ac3_decoder"
2158 eac3_encoder_select="ac3_encoder"
2159 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2160 eatgq_decoder_select="aandcttables"
2161 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2162 exr_decoder_select="zlib"
2163 ffv1_decoder_select="golomb rangecoder"
2164 ffv1_encoder_select="rangecoder"
2165 ffvhuff_decoder_select="huffyuv_decoder"
2166 ffvhuff_encoder_select="huffyuv_encoder"
2167 fic_decoder_select="golomb"
2168 flac_decoder_select="golomb"
2169 flac_encoder_select="bswapdsp golomb lpc"
2170 flashsv_decoder_select="zlib"
2171 flashsv_encoder_select="zlib"
2172 flashsv2_encoder_select="zlib"
2173 flashsv2_decoder_select="zlib"
2174 flv_decoder_select="h263_decoder"
2175 flv_encoder_select="h263_encoder"
2176 fourxm_decoder_select="blockdsp bswapdsp"
2177 fraps_decoder_select="bswapdsp huffman"
2178 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2179 g729_decoder_select="audiodsp"
2180 h261_decoder_select="mpeg_er mpegvideo"
2181 h261_encoder_select="aandcttables mpegvideoenc"
2182 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2183 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2184 h263i_decoder_select="h263_decoder"
2185 h263p_decoder_select="h263_decoder"
2186 h263p_encoder_select="h263_encoder"
2187 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2188 h264_decoder_suggest="error_resilience"
2189 h264_qsv_decoder_deps="libmfx"
2190 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2191 h264_qsv_encoder_deps="libmfx"
2192 h264_qsv_encoder_select="qsvenc"
2193 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2194 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2195 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2196 iac_decoder_select="imc_decoder"
2197 imc_decoder_select="bswapdsp fft mdct sinewin"
2198 indeo3_decoder_select="hpeldsp"
2199 interplay_video_decoder_select="hpeldsp"
2200 jpegls_decoder_select="golomb mjpeg_decoder"
2201 jpegls_encoder_select="golomb"
2202 jv_decoder_select="blockdsp"
2203 lagarith_decoder_select="huffyuvdsp"
2204 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2205 loco_decoder_select="golomb"
2206 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2207 metasound_decoder_select="lsp mdct sinewin"
2208 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2209 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2210 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2211 mjpegb_decoder_select="mjpeg_decoder"
2212 mlp_decoder_select="mlp_parser"
2213 motionpixels_decoder_select="bswapdsp"
2214 mp1_decoder_select="mpegaudio"
2215 mp1float_decoder_select="mpegaudio"
2216 mp2_decoder_select="mpegaudio"
2217 mp2float_decoder_select="mpegaudio"
2218 mp3_decoder_select="mpegaudio"
2219 mp3adu_decoder_select="mpegaudio"
2220 mp3adufloat_decoder_select="mpegaudio"
2221 mp3float_decoder_select="mpegaudio"
2222 mp3on4_decoder_select="mpegaudio"
2223 mp3on4float_decoder_select="mpegaudio"
2224 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2225 mpc8_decoder_select="mpegaudiodsp"
2226 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2227 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2228 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2229 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2230 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2231 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2232 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2233 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2234 mpeg4_encoder_select="h263_encoder"
2235 msmpeg4v1_decoder_select="h263_decoder"
2236 msmpeg4v2_decoder_select="h263_decoder"
2237 msmpeg4v2_encoder_select="h263_encoder"
2238 msmpeg4v3_decoder_select="h263_decoder"
2239 msmpeg4v3_encoder_select="h263_encoder"
2240 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2241 mxpeg_decoder_select="mjpeg_decoder"
2242 nellymoser_decoder_select="mdct sinewin"
2243 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2244 nuv_decoder_select="idctdsp lzo"
2245 on2avc_decoder_select="mdct"
2246 opus_decoder_deps="swresample"
2247 opus_decoder_select="imdct15"
2248 png_decoder_select="zlib"
2249 png_encoder_select="huffyuvencdsp zlib"
2250 prores_decoder_select="blockdsp idctdsp"
2251 prores_encoder_select="fdctdsp"
2252 qcelp_decoder_select="lsp"
2253 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2254 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2255 ra_144_decoder_select="audiodsp"
2256 ralf_decoder_select="golomb"
2257 rawvideo_decoder_select="bswapdsp"
2258 rtjpeg_decoder_select="me_cmp"
2259 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2260 rv10_encoder_select="h263_encoder"
2261 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2262 rv20_encoder_select="h263_encoder"
2263 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2264 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2265 shorten_decoder_select="golomb"
2266 sipr_decoder_select="lsp"
2267 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2268 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2269 sonic_decoder_select="golomb rangecoder"
2270 sonic_encoder_select="golomb rangecoder"
2271 sonic_ls_encoder_select="golomb rangecoder"
2272 sp5x_decoder_select="mjpeg_decoder"
2273 svq1_decoder_select="hpeldsp"
2274 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2275 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2276 svq3_decoder_suggest="zlib"
2277 tak_decoder_select="audiodsp"
2278 tdsc_decoder_select="zlib mjpeg_decoder"
2279 theora_decoder_select="vp3_decoder"
2280 thp_decoder_select="mjpeg_decoder"
2281 tiff_decoder_suggest="zlib lzma"
2282 tiff_encoder_suggest="zlib"
2283 truehd_decoder_select="mlp_parser"
2284 truemotion2_decoder_select="bswapdsp"
2285 truespeech_decoder_select="bswapdsp"
2286 tscc_decoder_select="zlib"
2287 twinvq_decoder_select="mdct lsp sinewin"
2288 utvideo_decoder_select="bswapdsp"
2289 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2290 vble_decoder_select="huffyuvdsp"
2291 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2292 vc1image_decoder_select="vc1_decoder"
2293 vorbis_decoder_select="mdct"
2294 vorbis_encoder_select="mdct"
2295 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2296 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2297 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2298 vp6a_decoder_select="vp6_decoder"
2299 vp6f_decoder_select="vp6_decoder"
2300 vp7_decoder_select="h264pred videodsp"
2301 vp8_decoder_select="h264pred videodsp"
2302 vp9_decoder_select="videodsp vp9_parser"
2303 webp_decoder_select="vp8_decoder"
2304 wmalossless_decoder_select="llauddsp"
2305 wmapro_decoder_select="mdct sinewin wma_freqs"
2306 wmav1_decoder_select="mdct sinewin wma_freqs"
2307 wmav1_encoder_select="mdct sinewin wma_freqs"
2308 wmav2_decoder_select="mdct sinewin wma_freqs"
2309 wmav2_encoder_select="mdct sinewin wma_freqs"
2310 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2311 wmv1_decoder_select="h263_decoder"
2312 wmv1_encoder_select="h263_encoder"
2313 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2314 wmv2_encoder_select="h263_encoder"
2315 wmv3_decoder_select="vc1_decoder"
2316 wmv3image_decoder_select="wmv3_decoder"
2317 zerocodec_decoder_select="zlib"
2318 zlib_decoder_select="zlib"
2319 zlib_encoder_select="zlib"
2320 zmbv_decoder_select="zlib"
2321 zmbv_encoder_select="zlib"
2322
2323 # hardware accelerators
2324 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2325 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2326 dxva2_deps="dxva2api_h"
2327 vaapi_deps="va_va_h"
2328 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2329 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2330 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2331 xvmc_deps="X11_extensions_XvMClib_h"
2332
2333 h263_vaapi_hwaccel_deps="vaapi"
2334 h263_vaapi_hwaccel_select="h263_decoder"
2335 h263_vdpau_hwaccel_deps="vdpau"
2336 h263_vdpau_hwaccel_select="h263_decoder"
2337 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2338 h264_d3d11va_hwaccel_deps="d3d11va"
2339 h264_d3d11va_hwaccel_select="h264_decoder"
2340 h264_dxva2_hwaccel_deps="dxva2"
2341 h264_dxva2_hwaccel_select="h264_decoder"
2342 h264_mmal_decoder_deps="mmal"
2343 h264_mmal_hwaccel_deps="mmal"
2344 h264_mmal_decoder_select="h264_decoder"
2345 h264_mmal_encoder_deps="mmal"
2346 h264_qsv_hwaccel_deps="libmfx"
2347 h264_vaapi_hwaccel_deps="vaapi"
2348 h264_vaapi_hwaccel_select="h264_decoder"
2349 h264_vda_decoder_deps="vda"
2350 h264_vda_decoder_select="h264_decoder"
2351 h264_vda_hwaccel_deps="vda"
2352 h264_vda_hwaccel_select="h264_decoder"
2353 h264_vda_old_hwaccel_deps="vda"
2354 h264_vda_old_hwaccel_select="h264_decoder"
2355 h264_vdpau_decoder_deps="vdpau"
2356 h264_vdpau_decoder_select="h264_decoder"
2357 h264_vdpau_hwaccel_deps="vdpau"
2358 h264_vdpau_hwaccel_select="h264_decoder"
2359 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2360 hevc_d3d11va_hwaccel_select="hevc_decoder"
2361 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2362 hevc_dxva2_hwaccel_select="hevc_decoder"
2363 mpeg_vdpau_decoder_deps="vdpau"
2364 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2365 mpeg_xvmc_hwaccel_deps="xvmc"
2366 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2367 mpeg1_vdpau_decoder_deps="vdpau"
2368 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2369 mpeg1_vdpau_hwaccel_deps="vdpau"
2370 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2371 mpeg1_xvmc_hwaccel_deps="xvmc"
2372 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2373 mpeg2_crystalhd_decoder_select="crystalhd"
2374 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2375 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2376 mpeg2_dxva2_hwaccel_deps="dxva2"
2377 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2378 mpeg2_vaapi_hwaccel_deps="vaapi"
2379 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2380 mpeg2_vdpau_hwaccel_deps="vdpau"
2381 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2382 mpeg2_xvmc_hwaccel_deps="xvmc"
2383 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2384 mpeg4_crystalhd_decoder_select="crystalhd"
2385 mpeg4_vaapi_hwaccel_deps="vaapi"
2386 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2387 mpeg4_vdpau_decoder_deps="vdpau"
2388 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2389 mpeg4_vdpau_hwaccel_deps="vdpau"
2390 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2391 msmpeg4_crystalhd_decoder_select="crystalhd"
2392 vc1_crystalhd_decoder_select="crystalhd"
2393 vc1_d3d11va_hwaccel_deps="d3d11va"
2394 vc1_d3d11va_hwaccel_select="vc1_decoder"
2395 vc1_dxva2_hwaccel_deps="dxva2"
2396 vc1_dxva2_hwaccel_select="vc1_decoder"
2397 vc1_vaapi_hwaccel_deps="vaapi"
2398 vc1_vaapi_hwaccel_select="vc1_decoder"
2399 vc1_vdpau_decoder_deps="vdpau"
2400 vc1_vdpau_decoder_select="vc1_decoder"
2401 vc1_vdpau_hwaccel_deps="vdpau"
2402 vc1_vdpau_hwaccel_select="vc1_decoder"
2403 wmv3_crystalhd_decoder_select="crystalhd"
2404 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2405 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2406 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2407 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2408 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2409
2410 # parsers
2411 h264_parser_select="h264_decoder"
2412 hevc_parser_select="hevc_decoder"
2413 mpegvideo_parser_select="mpegvideo"
2414 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2415 vc1_parser_select="mpegvideo startcode vc1_decoder"
2416
2417 # bitstream_filters
2418 mjpeg2jpeg_bsf_select="jpegtables"
2419
2420 # external libraries
2421 libaacplus_encoder_deps="libaacplus"
2422 libcelt_decoder_deps="libcelt"
2423 libdcadec_decoder_deps="libdcadec"
2424 libfaac_encoder_deps="libfaac"
2425 libfaac_encoder_select="audio_frame_queue"
2426 libfdk_aac_decoder_deps="libfdk_aac"
2427 libfdk_aac_encoder_deps="libfdk_aac"
2428 libfdk_aac_encoder_select="audio_frame_queue"
2429 libgme_demuxer_deps="libgme"
2430 libgsm_decoder_deps="libgsm"
2431 libgsm_encoder_deps="libgsm"
2432 libgsm_ms_decoder_deps="libgsm"
2433 libgsm_ms_encoder_deps="libgsm"
2434 libilbc_decoder_deps="libilbc"
2435 libilbc_encoder_deps="libilbc"
2436 libmodplug_demuxer_deps="libmodplug"
2437 libmp3lame_encoder_deps="libmp3lame"
2438 libmp3lame_encoder_select="audio_frame_queue"
2439 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2440 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2441 libopencore_amrnb_encoder_select="audio_frame_queue"
2442 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2443 libopenh264_encoder_deps="libopenh264"
2444 libopenjpeg_decoder_deps="libopenjpeg"
2445 libopenjpeg_encoder_deps="libopenjpeg"
2446 libopus_decoder_deps="libopus"
2447 libopus_encoder_deps="libopus"
2448 libopus_encoder_select="audio_frame_queue"
2449 libquvi_demuxer_deps="libquvi"
2450 libschroedinger_decoder_deps="libschroedinger"
2451 libschroedinger_encoder_deps="libschroedinger"
2452 libshine_encoder_deps="libshine"
2453 libshine_encoder_select="audio_frame_queue"
2454 libspeex_decoder_deps="libspeex"
2455 libspeex_encoder_deps="libspeex"
2456 libspeex_encoder_select="audio_frame_queue"
2457 libstagefright_h264_decoder_deps="libstagefright_h264"
2458 libtheora_encoder_deps="libtheora"
2459 libtwolame_encoder_deps="libtwolame"
2460 libvo_aacenc_encoder_deps="libvo_aacenc"
2461 libvo_aacenc_encoder_select="audio_frame_queue"
2462 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2463 libvorbis_decoder_deps="libvorbis"
2464 libvorbis_encoder_deps="libvorbis"
2465 libvorbis_encoder_select="audio_frame_queue"
2466 libvpx_vp8_decoder_deps="libvpx"
2467 libvpx_vp8_encoder_deps="libvpx"
2468 libvpx_vp9_decoder_deps="libvpx"
2469 libvpx_vp9_encoder_deps="libvpx"
2470 libwavpack_encoder_deps="libwavpack"
2471 libwebp_encoder_deps="libwebp"
2472 libwebp_anim_encoder_deps="libwebp"
2473 libx264_encoder_deps="libx264"
2474 libx264rgb_encoder_deps="libx264"
2475 libx264rgb_encoder_select="libx264_encoder"
2476 libx265_encoder_deps="libx265"
2477 libxavs_encoder_deps="libxavs"
2478 libxvid_encoder_deps="libxvid"
2479 libutvideo_decoder_deps="libutvideo"
2480 libutvideo_encoder_deps="libutvideo"
2481 libzvbi_teletext_decoder_deps="libzvbi"
2482 nvenc_encoder_deps="nvenc"
2483 nvenc_h265_encoder_deps="nvenc"
2484
2485 # demuxers / muxers
2486 ac3_demuxer_select="ac3_parser"
2487 asf_demuxer_select="riffdec"
2488 asf_muxer_select="riffenc"
2489 asf_stream_muxer_select="asf_muxer"
2490 avi_demuxer_select="riffdec exif"
2491 avi_muxer_select="riffenc"
2492 avisynth_demuxer_deps="avisynth"
2493 avisynth_demuxer_select="riffdec"
2494 caf_demuxer_select="riffdec"
2495 dash_muxer_select="mp4_muxer"
2496 dirac_demuxer_select="dirac_parser"
2497 dts_demuxer_select="dca_parser"
2498 dtshd_demuxer_select="dca_parser"
2499 dv_demuxer_select="dvprofile"
2500 dv_muxer_select="dvprofile"
2501 dxa_demuxer_select="riffdec"
2502 eac3_demuxer_select="ac3_parser"
2503 f4v_muxer_select="mov_muxer"
2504 flac_demuxer_select="flac_parser"
2505 hds_muxer_select="flv_muxer"
2506 hls_muxer_select="mpegts_muxer"
2507 image2_alias_pix_demuxer_select="image2_demuxer"
2508 image2_brender_pix_demuxer_select="image2_demuxer"
2509 ipod_muxer_select="mov_muxer"
2510 ismv_muxer_select="mov_muxer"
2511 libnut_demuxer_deps="libnut"
2512 libnut_muxer_deps="libnut"
2513 matroska_audio_muxer_select="matroska_muxer"
2514 matroska_demuxer_select="riffdec"
2515 matroska_demuxer_suggest="bzlib lzo zlib"
2516 matroska_muxer_select="riffenc"
2517 mmf_muxer_select="riffenc"
2518 mov_demuxer_select="riffdec"
2519 mov_demuxer_suggest="zlib"
2520 mov_muxer_select="riffenc rtpenc_chain"
2521 mp3_demuxer_select="mpegaudio_parser"
2522 mp4_muxer_select="mov_muxer"
2523 mpegts_muxer_select="adts_muxer latm_muxer"
2524 mpegtsraw_demuxer_select="mpegts_demuxer"
2525 mxf_d10_muxer_select="mxf_muxer"
2526 mxf_opatom_muxer_select="mxf_muxer"
2527 nut_muxer_select="riffenc"
2528 nuv_demuxer_select="riffdec"
2529 oga_muxer_select="ogg_muxer"
2530 ogg_demuxer_select="golomb"
2531 opus_muxer_select="ogg_muxer"
2532 psp_muxer_select="mov_muxer"
2533 rtp_demuxer_select="sdp_demuxer"
2534 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2535 rtsp_demuxer_select="http_protocol rtpdec"
2536 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2537 sap_demuxer_select="sdp_demuxer"
2538 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2539 sdp_demuxer_select="rtpdec"
2540 smoothstreaming_muxer_select="ismv_muxer"
2541 spdif_muxer_select="aac_parser"
2542 spx_muxer_select="ogg_muxer"
2543 tak_demuxer_select="tak_parser"
2544 tg2_muxer_select="mov_muxer"
2545 tgp_muxer_select="mov_muxer"
2546 vobsub_demuxer_select="mpegps_demuxer"
2547 w64_demuxer_select="wav_demuxer"
2548 w64_muxer_select="wav_muxer"
2549 wav_demuxer_select="riffdec"
2550 wav_muxer_select="riffenc"
2551 webm_muxer_select="riffenc"
2552 wtv_demuxer_select="riffdec"
2553 wtv_muxer_select="riffenc"
2554 xmv_demuxer_select="riffdec"
2555 xwma_demuxer_select="riffdec"
2556
2557 # indevs / outdevs
2558 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2559 alsa_outdev_deps="alsa_asoundlib_h"
2560 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2561 avfoundation_indev_select="avfoundation"
2562 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2563 caca_outdev_deps="libcaca"
2564 decklink_outdev_deps="decklink pthreads"
2565 decklink_outdev_extralibs="-lstdc++"
2566 decklink_indev_deps="decklink pthreads"
2567 decklink_indev_extralibs="-lstdc++"
2568 dshow_indev_deps="IBaseFilter"
2569 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2570 dv1394_indev_deps="dv1394"
2571 dv1394_indev_select="dv_demuxer"
2572 fbdev_indev_deps="linux_fb_h"
2573 fbdev_outdev_deps="linux_fb_h"
2574 gdigrab_indev_deps="CreateDIBSection"
2575 gdigrab_indev_extralibs="-lgdi32"
2576 gdigrab_indev_select="bmp_decoder"
2577 iec61883_indev_deps="libiec61883"
2578 jack_indev_deps="jack_jack_h sem_timedwait"
2579 lavfi_indev_deps="avfilter"
2580 libcdio_indev_deps="libcdio"
2581 libdc1394_indev_deps="libdc1394"
2582 libv4l2_indev_deps="libv4l2"
2583 openal_indev_deps="openal"
2584 opengl_outdev_deps="opengl"
2585 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2586 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2587 pulse_indev_deps="libpulse"
2588 pulse_outdev_deps="libpulse"
2589 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2590 qtkit_indev_select="qtkit"
2591 sdl_outdev_deps="sdl"
2592 sndio_indev_deps="sndio_h"
2593 sndio_outdev_deps="sndio_h"
2594 v4l_indev_deps="linux_videodev_h"
2595 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2596 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2597 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2598 vfwcap_indev_extralibs="-lavicap32"
2599 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2600 xv_outdev_extralibs="-lXv -lX11 -lXext"
2601 x11grab_indev_deps="x11grab"
2602 x11grab_xcb_indev_deps="libxcb"
2603
2604 # protocols
2605 bluray_protocol_deps="libbluray"
2606 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2607 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2608 ffrtmpcrypt_protocol_select="tcp_protocol"
2609 ffrtmphttp_protocol_deps="!librtmp_protocol"
2610 ffrtmphttp_protocol_select="http_protocol"
2611 ftp_protocol_select="tcp_protocol"
2612 gopher_protocol_select="network"
2613 http_protocol_select="tcp_protocol"
2614 httpproxy_protocol_select="tcp_protocol"
2615 https_protocol_select="tls_protocol"
2616 icecast_protocol_select="http_protocol"
2617 librtmp_protocol_deps="librtmp"
2618 librtmpe_protocol_deps="librtmp"
2619 librtmps_protocol_deps="librtmp"
2620 librtmpt_protocol_deps="librtmp"
2621 librtmpte_protocol_deps="librtmp"
2622 libsmbclient_protocol_deps="libsmbclient gplv3"
2623 libssh_protocol_deps="libssh"
2624 mmsh_protocol_select="http_protocol"
2625 mmst_protocol_select="network"
2626 rtmp_protocol_deps="!librtmp_protocol"
2627 rtmp_protocol_select="tcp_protocol"
2628 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2629 rtmps_protocol_deps="!librtmp_protocol"
2630 rtmps_protocol_select="tls_protocol"
2631 rtmpt_protocol_select="ffrtmphttp_protocol"
2632 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2633 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2634 rtp_protocol_select="udp_protocol"
2635 sctp_protocol_deps="struct_sctp_event_subscribe"
2636 sctp_protocol_select="network"
2637 srtp_protocol_select="rtp_protocol"
2638 tcp_protocol_select="network"
2639 tls_gnutls_protocol_deps="gnutls"
2640 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2641 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2642 tls_protocol_select="tcp_protocol"
2643 udp_protocol_select="network"
2644 udplite_protocol_select="network"
2645 unix_protocol_deps="sys_un_h"
2646 unix_protocol_select="network"
2647
2648 # filters
2649 amovie_filter_deps="avcodec avformat"
2650 aresample_filter_deps="swresample"
2651 ass_filter_deps="libass"
2652 asyncts_filter_deps="avresample"
2653 atempo_filter_deps="avcodec"
2654 atempo_filter_select="rdft"
2655 azmq_filter_deps="libzmq"
2656 blackframe_filter_deps="gpl"
2657 boxblur_filter_deps="gpl"
2658 bs2b_filter_deps="libbs2b"
2659 colormatrix_filter_deps="gpl"
2660 cover_rect_filter_deps="avcodec avformat gpl"
2661 cropdetect_filter_deps="gpl"
2662 delogo_filter_deps="gpl"
2663 deshake_filter_select="pixelutils"
2664 drawtext_filter_deps="libfreetype"
2665 ebur128_filter_deps="gpl"
2666 eq_filter_deps="gpl"
2667 fftfilt_filter_deps="avcodec"
2668 fftfilt_filter_select="rdft"
2669 flite_filter_deps="libflite"
2670 find_rect_filter_deps="avcodec avformat gpl"
2671 frei0r_filter_deps="frei0r dlopen"
2672 frei0r_src_filter_deps="frei0r dlopen"
2673 fspp_filter_deps="gpl"
2674 geq_filter_deps="gpl"
2675 histeq_filter_deps="gpl"
2676 hqdn3d_filter_deps="gpl"
2677 interlace_filter_deps="gpl"
2678 kerndeint_filter_deps="gpl"
2679 ladspa_filter_deps="ladspa dlopen"
2680 mcdeint_filter_deps="avcodec gpl"
2681 movie_filter_deps="avcodec avformat"
2682 mpdecimate_filter_deps="gpl"
2683 mpdecimate_filter_select="pixelutils"
2684 mptestsrc_filter_deps="gpl"
2685 negate_filter_deps="lut_filter"
2686 perspective_filter_deps="gpl"
2687 pp7_filter_deps="gpl"
2688 ocv_filter_deps="libopencv"
2689 owdenoise_filter_deps="gpl"
2690 pan_filter_deps="swresample"
2691 phase_filter_deps="gpl"
2692 pp_filter_deps="gpl postproc"
2693 pullup_filter_deps="gpl"
2694 removelogo_filter_deps="avcodec avformat swscale"
2695 repeatfields_filter_deps="gpl"
2696 resample_filter_deps="avresample"
2697 sab_filter_deps="gpl swscale"
2698 scale_filter_deps="swscale"
2699 select_filter_select="pixelutils"
2700 smartblur_filter_deps="gpl swscale"
2701 showspectrum_filter_deps="avcodec"
2702 showspectrum_filter_select="rdft"
2703 spp_filter_deps="gpl avcodec"
2704 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2705 stereo3d_filter_deps="gpl"
2706 subtitles_filter_deps="avformat avcodec libass"
2707 super2xsai_filter_deps="gpl"
2708 tinterlace_filter_deps="gpl"
2709 vidstabdetect_filter_deps="libvidstab"
2710 vidstabtransform_filter_deps="libvidstab"
2711 pixfmts_super2xsai_test_deps="super2xsai_filter"
2712 tinterlace_merge_test_deps="tinterlace_filter"
2713 tinterlace_pad_test_deps="tinterlace_filter"
2714 uspp_filter_deps="gpl avcodec"
2715 zmq_filter_deps="libzmq"
2716 zoompan_filter_deps="swscale"
2717
2718 # examples
2719 avio_reading="avformat avcodec avutil"
2720 avio_list_dir="avformat avutil"
2721 avcodec_example_deps="avcodec avutil"
2722 decoding_encoding_example_deps="avcodec avformat avutil"
2723 demuxing_decoding_example_deps="avcodec avformat avutil"
2724 extract_mvs_example_deps="avcodec avformat avutil"
2725 filter_audio_example_deps="avfilter avutil"
2726 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2727 filtering_video_example_deps="avfilter avcodec avformat avutil"
2728 metadata_example_deps="avformat avutil"
2729 muxing_example_deps="avcodec avformat avutil swscale"
2730 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2731 remuxing_example_deps="avcodec avformat avutil"
2732 resampling_audio_example_deps="avutil swresample"
2733 scaling_video_example_deps="avutil swscale"
2734 transcode_aac_example_deps="avcodec avformat swresample"
2735 transcoding_example_deps="avfilter avcodec avformat avutil"
2736
2737 # libraries, in linking order
2738 avcodec_deps="avutil"
2739 avdevice_deps="avformat avcodec avutil"
2740 avfilter_deps="avutil"
2741 avformat_deps="avcodec avutil"
2742 avresample_deps="avutil"
2743 postproc_deps="avutil gpl"
2744 swresample_deps="avutil"
2745 swscale_deps="avutil"
2746
2747 # programs
2748 ffmpeg_deps="avcodec avfilter avformat swresample"
2749 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2750                null_filter
2751                setpts_filter trim_filter"
2752 ffplay_deps="avcodec avformat swscale swresample sdl"
2753 ffplay_libs='$sdl_libs'
2754 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2755 ffprobe_deps="avcodec avformat"
2756 ffserver_deps="avformat fork sarestart"
2757 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2758
2759 # documentation
2760 podpages_deps="perl"
2761 manpages_deps="perl pod2man"
2762 htmlpages_deps="perl"
2763 htmlpages_deps_any="makeinfo_html texi2html"
2764 txtpages_deps="perl makeinfo"
2765 doc_deps_any="manpages htmlpages podpages txtpages"
2766
2767 # default parameters
2768
2769 logfile="config.log"
2770
2771 # installation paths
2772 prefix_default="/usr/local"
2773 bindir_default='${prefix}/bin'
2774 datadir_default='${prefix}/share/ffmpeg'
2775 docdir_default='${prefix}/share/doc/ffmpeg'
2776 incdir_default='${prefix}/include'
2777 libdir_default='${prefix}/lib'
2778 mandir_default='${prefix}/share/man'
2779
2780 # toolchain
2781 ar_default="ar"
2782 cc_default="gcc"
2783 cxx_default="g++"
2784 host_cc_default="gcc"
2785 cp_f="cp -f"
2786 doxygen_default="doxygen"
2787 install="install"
2788 ln_s="ln -s -f"
2789 nm_default="nm -g"
2790 objformat="elf"
2791 pkg_config_default=pkg-config
2792 if ranlib 2>&1 | grep -q "\-D "; then
2793     ranlib_default="ranlib -D"
2794 else
2795     ranlib_default="ranlib"
2796 fi
2797 strip_default="strip"
2798 yasmexe_default="yasm"
2799 windres_default="windres"
2800
2801 # OS
2802 target_os_default=$(tolower $(uname -s))
2803 host_os=$target_os_default
2804
2805 # machine
2806 if test "$target_os_default" = aix; then
2807     arch_default=$(uname -p)
2808     strip_default="strip -X32_64"
2809 else
2810     arch_default=$(uname -m)
2811 fi
2812 cpu="generic"
2813 intrinsics="none"
2814
2815 # configurable options
2816 enable $PROGRAM_LIST
2817 enable $DOCUMENT_LIST
2818 enable $EXAMPLE_LIST
2819 enable $(filter_out avresample $LIBRARY_LIST)
2820 enable stripping
2821
2822 enable asm
2823 enable debug
2824 enable doc
2825 enable faan faandct faanidct
2826 enable optimizations
2827 enable runtime_cpudetect
2828 enable safe_bitstream_reader
2829 enable static
2830 enable swscale_alpha
2831 enable valgrind_backtrace
2832
2833 sws_max_filter_size_default=256
2834 set_default sws_max_filter_size
2835
2836 # Enable hwaccels by default.
2837 enable d3d11va dxva2 vaapi vda vdpau xvmc
2838 enable xlib
2839
2840 # build settings
2841 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2842 LIBPREF="lib"
2843 LIBSUF=".a"
2844 FULLNAME='$(NAME)$(BUILDSUF)'
2845 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2846 SLIBPREF="lib"
2847 SLIBSUF=".so"
2848 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2849 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2850 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2851 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2852 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2853 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2854
2855 asflags_filter=echo
2856 cflags_filter=echo
2857 ldflags_filter=echo
2858
2859 AS_C='-c'
2860 AS_O='-o $@'
2861 CC_C='-c'
2862 CC_E='-E -o $@'
2863 CC_O='-o $@'
2864 CXX_C='-c'
2865 CXX_O='-o $@'
2866 LD_O='-o $@'
2867 LD_LIB='-l%'
2868 LD_PATH='-L'
2869 HOSTCC_C='-c'
2870 HOSTCC_E='-E -o $@'
2871 HOSTCC_O='-o $@'
2872 HOSTLD_O='-o $@'
2873
2874 host_libs='-lm'
2875 host_cflags_filter=echo
2876 host_ldflags_filter=echo
2877
2878 target_path='$(CURDIR)'
2879
2880 # since the object filename is not given with the -MM flag, the compiler
2881 # is only able to print the basename, and we must add the path ourselves
2882 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2883 DEPFLAGS='-MM'
2884
2885 # find source path
2886 if test -f configure; then
2887     source_path=.
2888 else
2889     source_path=$(cd $(dirname "$0"); pwd)
2890     echo "$source_path" | grep -q '[[:blank:]]' &&
2891         die "Out of tree builds are impossible with whitespace in source path."
2892     test -e "$source_path/config.h" &&
2893         die "Out of tree builds are impossible with config.h in source dir."
2894 fi
2895
2896 for v in "$@"; do
2897     r=${v#*=}
2898     l=${v%"$r"}
2899     r=$(sh_quote "$r")
2900     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2901 done
2902
2903 find_things(){
2904     thing=$1
2905     pattern=$2
2906     file=$source_path/$3
2907     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2908 }
2909
2910 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2911 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2912 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2913 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2914 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2915 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2916 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2917 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2918 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2919 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2920 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2921
2922 ALL_COMPONENTS="
2923     $BSF_LIST
2924     $DECODER_LIST
2925     $DEMUXER_LIST
2926     $ENCODER_LIST
2927     $FILTER_LIST
2928     $HWACCEL_LIST
2929     $INDEV_LIST
2930     $MUXER_LIST
2931     $OUTDEV_LIST
2932     $PARSER_LIST
2933     $PROTOCOL_LIST
2934 "
2935
2936 for n in $COMPONENT_LIST; do
2937     v=$(toupper ${n%s})_LIST
2938     eval enable \$$v
2939     eval ${n}_if_any="\$$v"
2940 done
2941
2942 enable $ARCH_EXT_LIST
2943
2944 die_unknown(){
2945     echo "Unknown option \"$1\"."
2946     echo "See $0 --help for available options."
2947     exit 1
2948 }
2949
2950 print_3_columns() {
2951     cat | tr ' ' '\n' | sort | pr -r -3 -t
2952 }
2953
2954 show_list() {
2955     suffix=_$1
2956     shift
2957     echo $* | sed s/$suffix//g | print_3_columns
2958     exit 0
2959 }
2960
2961 rand_list(){
2962     IFS=', '
2963     set -- $*
2964     unset IFS
2965     for thing; do
2966         comp=${thing%:*}
2967         prob=${thing#$comp}
2968         prob=${prob#:}
2969         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2970         echo "prob ${prob:-0.5}"
2971         printf '%s\n' $comp
2972     done
2973 }
2974
2975 do_random(){
2976     action=$1
2977     shift
2978     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2979     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2980 }
2981
2982 for opt do
2983     optval="${opt#*=}"
2984     case "$opt" in
2985         --extra-ldflags=*)
2986             add_ldflags $optval
2987         ;;
2988         --extra-ldexeflags=*)
2989             add_ldexeflags $optval
2990         ;;
2991         --extra-libs=*)
2992             add_extralibs $optval
2993         ;;
2994         --disable-devices)
2995             disable $INDEV_LIST $OUTDEV_LIST
2996         ;;
2997         --enable-debug=*)
2998             debuglevel="$optval"
2999         ;;
3000         --disable-programs)
3001             disable $PROGRAM_LIST
3002         ;;
3003         --disable-everything)
3004             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3005         ;;
3006         --disable-all)
3007             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3008             disable $LIBRARY_LIST $PROGRAM_LIST doc
3009         ;;
3010         --enable-random|--disable-random)
3011             action=${opt%%-random}
3012             do_random ${action#--} $COMPONENT_LIST
3013         ;;
3014         --enable-random=*|--disable-random=*)
3015             action=${opt%%-random=*}
3016             do_random ${action#--} $optval
3017         ;;
3018         --enable-*=*|--disable-*=*)
3019             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3020             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3021             eval list=\$$(toupper $thing)_LIST
3022             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3023             list=$(filter "$name" $list)
3024             [ "$list" = "" ] && warn "Option $opt did not match anything"
3025             $action $list
3026         ;;
3027         --enable-?*|--disable-?*)
3028             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3029             if is_in $option $COMPONENT_LIST; then
3030                 test $action = disable && action=unset
3031                 eval $action \$$(toupper ${option%s})_LIST
3032             elif is_in $option $CMDLINE_SELECT; then
3033                 $action $option
3034             else
3035                 die_unknown $opt
3036             fi
3037         ;;
3038         --list-*)
3039             NAME="${opt#--list-}"
3040             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3041             NAME=${NAME%s}
3042             eval show_list $NAME \$$(toupper $NAME)_LIST
3043         ;;
3044         --help|-h) show_help
3045         ;;
3046         --fatal-warnings) enable fatal_warnings
3047         ;;
3048         *)
3049             optname="${opt%%=*}"
3050             optname="${optname#--}"
3051             optname=$(echo "$optname" | sed 's/-/_/g')
3052             if is_in $optname $CMDLINE_SET; then
3053                 eval $optname='$optval'
3054             elif is_in $optname $CMDLINE_APPEND; then
3055                 append $optname "$optval"
3056             else
3057                 die_unknown $opt
3058             fi
3059         ;;
3060     esac
3061 done
3062
3063 disabled logging && logfile=/dev/null
3064
3065 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3066 set >> $logfile
3067
3068 test -n "$valgrind" && toolchain="valgrind-memcheck"
3069
3070 case "$toolchain" in
3071     clang-asan)
3072         cc_default="clang"
3073         add_cflags  -fsanitize=address
3074         add_ldflags -fsanitize=address
3075     ;;
3076     clang-tsan)
3077         cc_default="clang"
3078         add_cflags  -fsanitize=thread -pie
3079         add_ldflags -fsanitize=thread -pie
3080     ;;
3081     clang-usan)
3082         cc_default="clang"
3083         add_cflags  -fsanitize=undefined
3084         add_ldflags -fsanitize=undefined
3085     ;;
3086     gcc-asan)
3087         cc_default="gcc"
3088         add_cflags  -fsanitize=address
3089         add_ldflags -fsanitize=address
3090     ;;
3091     gcc-tsan)
3092         cc_default="gcc"
3093         add_cflags  -fsanitize=thread -pie -fPIC
3094         add_ldflags -fsanitize=thread -pie -fPIC
3095     ;;
3096     gcc-usan)
3097         cc_default="gcc"
3098         add_cflags  -fsanitize=undefined
3099         add_ldflags -fsanitize=undefined
3100     ;;
3101     valgrind-massif)
3102         target_exec_default=${valgrind:-"valgrind"}
3103         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"
3104     ;;
3105     valgrind-memcheck)
3106         target_exec_default=${valgrind:-"valgrind"}
3107         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3108     ;;
3109     msvc)
3110         # Check whether the current MSVC version needs the C99 converter.
3111         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3112         # support enough of C99 to build ffmpeg. Default to the new
3113         # behaviour if the regexp was unable to match anything, since this
3114         # successfully parses the version number of existing supported
3115         # versions that require the converter (MSVC 2010 and 2012).
3116         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3117         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3118             cc_default="cl"
3119         else
3120             cc_default="c99wrap cl"
3121         fi
3122         ld_default="link"
3123         nm_default="dumpbin -symbols"
3124         ar_default="lib"
3125         target_os_default="win32"
3126         # Use a relative path for TMPDIR. This makes sure all the
3127         # ffconf temp files are written with a relative path, avoiding
3128         # issues with msys/win32 path conversion for MSVC parameters
3129         # such as -Fo<file> or -out:<file>.
3130         TMPDIR=.
3131     ;;
3132     icl)
3133         cc_default="icl"
3134         ld_default="xilink"
3135         nm_default="dumpbin -symbols"
3136         ar_default="xilib"
3137         target_os_default="win32"
3138         TMPDIR=.
3139     ;;
3140     gcov)
3141         add_cflags  -fprofile-arcs -ftest-coverage
3142         add_ldflags -fprofile-arcs -ftest-coverage
3143     ;;
3144     hardened)
3145         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3146         add_cflags   -fno-strict-overflow -fstack-protector-all
3147         add_ldflags  -Wl,-z,relro -Wl,-z,now
3148     ;;
3149     ?*)
3150         die "Unknown toolchain $toolchain"
3151     ;;
3152 esac
3153
3154 test -n "$cross_prefix" && enable cross_compile
3155
3156 if enabled cross_compile; then
3157     test -n "$arch" && test -n "$target_os" ||
3158         die "Must specify target arch and OS when cross-compiling"
3159 fi
3160
3161 ar_default="${cross_prefix}${ar_default}"
3162 cc_default="${cross_prefix}${cc_default}"
3163 cxx_default="${cross_prefix}${cxx_default}"
3164 nm_default="${cross_prefix}${nm_default}"
3165 pkg_config_default="${cross_prefix}${pkg_config_default}"
3166 ranlib_default="${cross_prefix}${ranlib_default}"
3167 strip_default="${cross_prefix}${strip_default}"
3168 windres_default="${cross_prefix}${windres_default}"
3169
3170 sysinclude_default="${sysroot}/usr/include"
3171
3172 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3173     target_exec target_os yasmexe
3174 enabled cross_compile || host_cc_default=$cc
3175 set_default host_cc
3176
3177 pkg_config_fail_message=""
3178 if ! $pkg_config --version >/dev/null 2>&1; then
3179     warn "$pkg_config not found, library detection may fail."
3180     pkg_config=false
3181 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3182     pkg_config_fail_message="
3183 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3184 fi
3185
3186 if test $doxygen != $doxygen_default && \
3187   ! $doxygen --version >/dev/null 2>&1; then
3188     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3189 fi
3190
3191 exesuf() {
3192     case $1 in
3193         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3194     esac
3195 }
3196
3197 EXESUF=$(exesuf $target_os)
3198 HOSTEXESUF=$(exesuf $host_os)
3199
3200 # set temporary file name
3201 : ${TMPDIR:=$TEMPDIR}
3202 : ${TMPDIR:=$TMP}
3203 : ${TMPDIR:=/tmp}
3204
3205 if [ -n "$tempprefix" ] ; then
3206     mktemp(){
3207         echo $tempprefix.${HOSTNAME}.${UID}
3208     }
3209 elif ! check_cmd mktemp -u XXXXXX; then
3210     # simple replacement for missing mktemp
3211     # NOT SAFE FOR GENERAL USE
3212     mktemp(){
3213         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3214     }
3215 fi
3216
3217 tmpfile(){
3218     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3219         (set -C; exec > $tmp) 2>/dev/null ||
3220         die "Unable to create temporary file in $TMPDIR."
3221     append TMPFILES $tmp
3222     eval $1=$tmp
3223 }
3224
3225 trap 'rm -f -- $TMPFILES' EXIT
3226
3227 tmpfile TMPASM .asm
3228 tmpfile TMPC   .c
3229 tmpfile TMPCPP .cpp
3230 tmpfile TMPE   $EXESUF
3231 tmpfile TMPH   .h
3232 tmpfile TMPM   .m
3233 tmpfile TMPO   .o
3234 tmpfile TMPS   .S
3235 tmpfile TMPSH  .sh
3236 tmpfile TMPV   .ver
3237
3238 unset -f mktemp
3239
3240 chmod +x $TMPE
3241
3242 # make sure we can execute files in $TMPDIR
3243 cat > $TMPSH 2>> $logfile <<EOF
3244 #! /bin/sh
3245 EOF
3246 chmod +x $TMPSH >> $logfile 2>&1
3247 if ! $TMPSH >> $logfile 2>&1; then
3248     cat <<EOF
3249 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3250 variable to another directory and make sure that it is not mounted noexec.
3251 EOF
3252     die "Sanity test failed."
3253 fi
3254
3255 armasm_flags(){
3256     for flag; do
3257         case $flag in
3258             # Filter out MSVC cl.exe options from cflags that shouldn't
3259             # be passed to gas-preprocessor
3260             -M[TD]*)                                            ;;
3261             *)                  echo $flag                      ;;
3262         esac
3263    done
3264 }
3265
3266 ccc_flags(){
3267     for flag; do
3268         case $flag in
3269             -std=c99)           echo -c99                       ;;
3270             -mcpu=*)            echo -arch ${flag#*=}           ;;
3271             -mieee)             echo -ieee                      ;;
3272             -O*|-fast)          echo $flag                      ;;
3273             -fno-math-errno)    echo -assume nomath_errno       ;;
3274             -g)                 echo -g3                        ;;
3275             -Wall)              echo -msg_enable level2         ;;
3276             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3277             -Wl,*)              echo $flag                      ;;
3278             -f*|-W*)                                            ;;
3279             *)                  echo $flag                      ;;
3280         esac
3281    done
3282 }
3283
3284 cparser_flags(){
3285     for flag; do
3286         case $flag in
3287             -Wno-switch)             echo -Wno-switch-enum ;;
3288             -Wno-format-zero-length) ;;
3289             -Wdisabled-optimization) ;;
3290             -Wno-pointer-sign)       echo -Wno-other ;;
3291             *)                       echo $flag ;;
3292         esac
3293     done
3294 }
3295
3296 msvc_common_flags(){
3297     for flag; do
3298         case $flag in
3299             # In addition to specifying certain flags under the compiler
3300             # specific filters, they must be specified here as well or else the
3301             # generic catch all at the bottom will print the original flag.
3302             -Wall)                ;;
3303             -std=c99)             ;;
3304             # Common flags
3305             -fomit-frame-pointer) ;;
3306             -g)                   echo -Z7 ;;
3307             -fno-math-errno)      ;;
3308             -fno-common)          ;;
3309             -fno-signed-zeros)    ;;
3310             -fPIC)                ;;
3311             -mthumb)              ;;
3312             -march=*)             ;;
3313             -lz)                  echo zlib.lib ;;
3314             -lavifil32)           echo vfw32.lib ;;
3315             -lavicap32)           echo vfw32.lib user32.lib ;;
3316             -l*)                  echo ${flag#-l}.lib ;;
3317             -L*)                  echo -libpath:${flag#-L} ;;
3318             *)                    echo $flag ;;
3319         esac
3320     done
3321 }
3322
3323 msvc_flags(){
3324     msvc_common_flags "$@"
3325     for flag; do
3326         case $flag in
3327             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3328                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3329                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3330                                        -wd4307 \
3331                                        -wd4273 -wd4554 -wd4701 ;;
3332         esac
3333     done
3334 }
3335
3336 icl_flags(){
3337     msvc_common_flags "$@"
3338     for flag; do
3339         case $flag in
3340             # Despite what Intel's documentation says -Wall, which is supported
3341             # on Windows, does enable remarks so disable them here.
3342             -Wall)                echo $flag -Qdiag-disable:remark ;;
3343             -std=c99)             echo -Qstd=c99 ;;
3344             -flto)                echo -ipo ;;
3345         esac
3346     done
3347 }
3348
3349 icc_flags(){
3350     for flag; do
3351         case $flag in
3352             -flto)                echo -ipo ;;
3353             *)                    echo $flag ;;
3354         esac
3355     done
3356 }
3357
3358 pgi_flags(){
3359     for flag; do
3360         case $flag in
3361             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3362             -fomit-frame-pointer) echo -Mnoframe ;;
3363             -g)                   echo -gopt ;;
3364             *)                    echo $flag ;;
3365         esac
3366     done
3367 }
3368
3369 suncc_flags(){
3370     for flag; do
3371         case $flag in
3372             -march=*|-mcpu=*)
3373                 case "${flag#*=}" in
3374                     native)                   echo -xtarget=native       ;;
3375                     v9|niagara)               echo -xarch=sparc          ;;
3376                     ultrasparc)               echo -xarch=sparcvis       ;;
3377                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3378                     i586|pentium)             echo -xchip=pentium        ;;
3379                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3380                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3381                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3382                     pentium4*)          echo -xtarget=pentium4           ;;
3383                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3384                     *-sse3)             echo -xarch=sse3                 ;;
3385                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3386                     bonnell)                   echo -xarch=ssse3         ;;
3387                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3388                     westmere)                  echo -xtarget=westmere    ;;
3389                     silvermont)                echo -xarch=sse4_2        ;;
3390                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3391                     core-avx*|ivybridge|haswell|broadwell)
3392                                                echo -xarch=avx           ;;
3393                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3394                     btver1)                    echo -xarch=amdsse4a      ;;
3395                     btver2|bdver*)             echo -xarch=avx           ;;
3396                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3397                     k8|opteron|athlon64|athlon-fx)
3398                                                echo -xarch=sse2a         ;;
3399                     athlon*)                   echo -xarch=pentium_proa  ;;
3400                 esac
3401                 ;;
3402             -std=c99)             echo -xc99              ;;
3403             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3404             -fPIC)                echo -KPIC -xcode=pic32 ;;
3405             -W*,*)                echo $flag              ;;
3406             -f*-*|-W*|-mimpure-text)                      ;;
3407             -shared)              echo -G                 ;;
3408             *)                    echo $flag              ;;
3409         esac
3410     done
3411 }
3412
3413 tms470_flags(){
3414     for flag; do
3415         case $flag in
3416             -march=*|-mcpu=*)
3417                 case "${flag#*=}" in
3418                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3419                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3420                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3421                     armv6*|arm11*)          echo -mv=6   ;;
3422                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3423                                             echo -mv=5e  ;;
3424                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3425                 esac
3426                 ;;
3427             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3428             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3429             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3430             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3431             -msoft-float)   echo --float_support=vfplib       ;;
3432             -O[0-3]|-mf=*)  echo $flag                        ;;
3433             -g)             echo -g -mn                       ;;
3434             -pds=*)         echo $flag                        ;;
3435             -D*|-I*)        echo $flag                        ;;
3436             --gcc|--abi=*)  echo $flag                        ;;
3437             -me)            echo $flag                        ;;
3438         esac
3439     done
3440 }
3441
3442 probe_cc(){
3443     pfx=$1
3444     _cc=$2
3445
3446     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3447     unset _ld_o _ldflags _ld_lib _ld_path
3448     unset _depflags _DEPCMD _DEPFLAGS
3449     _flags_filter=echo
3450
3451     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3452         true # no-op to avoid reading stdin in following checks
3453     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3454         _type=llvm_gcc
3455         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3456         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3457         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3458         _cflags_speed='-O3'
3459         _cflags_size='-Os'
3460     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3461         _type=gcc
3462         gcc_version=$($_cc --version | head -n1)
3463         gcc_basever=$($_cc -dumpversion)
3464         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3465         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3466         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3467         if ! $_cc -dumpversion | grep -q '^2\.'; then
3468             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3469         fi
3470         _cflags_speed='-O3'
3471         _cflags_size='-Os'
3472     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3473         _type=icc
3474         _ident=$($_cc --version | head -n1)
3475         _depflags='-MMD'
3476         _cflags_speed='-O3'
3477         _cflags_size='-Os'
3478         _cflags_noopt='-O1'
3479         _flags_filter=icc_flags
3480     elif $_cc -v 2>&1 | grep -q xlc; then
3481         _type=xlc
3482         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3483         _cflags_speed='-O5'
3484         _cflags_size='-O5 -qcompact'
3485     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3486         _type=ccc
3487         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3488         _DEPFLAGS='-M'
3489         _cflags_speed='-fast'
3490         _cflags_size='-O1'
3491         _flags_filter=ccc_flags
3492     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3493         test -d "$sysroot" || die "No valid sysroot specified."
3494         _type=armcc
3495         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3496         armcc_conf="$PWD/armcc.conf"
3497         $_cc --arm_linux_configure                 \
3498              --arm_linux_config_file="$armcc_conf" \
3499              --configure_sysroot="$sysroot"        \
3500              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3501              die "Error creating armcc configuration file."
3502         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3503         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3504         as_default="${cross_prefix}gcc"
3505         _depflags='-MMD'
3506         _cflags_speed='-O3'
3507         _cflags_size='-Os'
3508     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3509         _type=tms470
3510         _ident=$($_cc -version | head -n1 | tr -s ' ')
3511         _flags='--gcc --abi=eabi -me'
3512         _cc_e='-ppl -fe=$@'
3513         _cc_o='-fe=$@'
3514         _depflags='-ppa -ppd=$(@:.o=.d)'
3515         _cflags_speed='-O3 -mf=5'
3516         _cflags_size='-O3 -mf=2'
3517         _flags_filter=tms470_flags
3518     elif $_cc -v 2>&1 | grep -q clang; then
3519         _type=clang
3520         _ident=$($_cc --version | head -n1)
3521         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3522         _cflags_speed='-O3'
3523         _cflags_size='-Os'
3524     elif $_cc -V 2>&1 | grep -q Sun; then
3525         _type=suncc
3526         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3527         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3528         _DEPFLAGS='-xM1 -xc99'
3529         _ldflags='-std=c99'
3530         _cflags_speed='-O5'
3531         _cflags_size='-O5 -xspace'
3532         _flags_filter=suncc_flags
3533     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3534         _type=pathscale
3535         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3536         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3537         _cflags_speed='-O2'
3538         _cflags_size='-Os'
3539         _flags_filter='filter_out -Wdisabled-optimization'
3540     elif $_cc -v 2>&1 | grep -q Open64; then
3541         _type=open64
3542         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3543         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3544         _cflags_speed='-O2'
3545         _cflags_size='-Os'
3546         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3547     elif $_cc -V 2>&1 | grep -q Portland; then
3548         _type=pgi
3549         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3550         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3551         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3552         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3553         _cflags_noopt="-O"
3554         _flags_filter=pgi_flags
3555     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3556         _type=armasm
3557         _ident=$($_cc | head -n1)
3558         # 4509: "This form of conditional instruction is deprecated"
3559         _flags="-nologo -ignore 4509"
3560         _flags_filter=armasm_flags
3561     elif $_cc 2>&1 | grep -q Intel; then
3562         _type=icl
3563         _ident=$($_cc 2>&1 | head -n1)
3564         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3565         # Not only is O3 broken on 13.x+ but it is slower on all previous
3566         # versions (tested) as well.
3567         _cflags_speed="-O2"
3568         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3569         if $_cc 2>&1 | grep -q Linker; then
3570             _ld_o='-out:$@'
3571         else
3572             _ld_o='-Fe$@'
3573         fi
3574         _cc_o='-Fo$@'
3575         _cc_e='-P'
3576         _flags_filter=icl_flags
3577         _ld_lib='lib%.a'
3578         _ld_path='-libpath:'
3579         # -Qdiag-error to make icl error when seeing certain unknown arguments
3580         _flags='-nologo -Qdiag-error:4044,10157'
3581         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3582         # with MSVC which enables it by default.
3583         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3584         if [ $pfx = hostcc ]; then
3585             append _cflags -Dsnprintf=_snprintf
3586         fi
3587         disable stripping
3588     elif $_cc 2>&1 | grep -q Microsoft; then
3589         _type=msvc
3590         _ident=$($_cc 2>&1 | head -n1)
3591         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3592         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3593         _cflags_speed="-O2"
3594         _cflags_size="-O1"
3595         if $_cc 2>&1 | grep -q Linker; then
3596             _ld_o='-out:$@'
3597         else
3598             _ld_o='-Fe$@'
3599         fi
3600         _cc_o='-Fo$@'
3601         _cc_e='-P -Fi$@'
3602         _flags_filter=msvc_flags
3603         _ld_lib='lib%.a'
3604         _ld_path='-libpath:'
3605         _flags='-nologo'
3606         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3607         if [ $pfx = hostcc ]; then
3608             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3609                 append _cflags -Dsnprintf=_snprintf
3610             fi
3611         fi
3612         disable stripping
3613     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3614         _type=cparser
3615         _ident=$($_cc --version | head -n1)
3616         _depflags='-MMD'
3617         _cflags_speed='-O4'
3618         _cflags_size='-O2'
3619         _flags_filter=cparser_flags
3620     fi
3621
3622     eval ${pfx}_type=\$_type
3623     eval ${pfx}_ident=\$_ident
3624 }
3625
3626 set_ccvars(){
3627     eval ${1}_C=\${_cc_c-\${${1}_C}}
3628     eval ${1}_E=\${_cc_e-\${${1}_E}}
3629     eval ${1}_O=\${_cc_o-\${${1}_O}}
3630
3631     if [ -n "$_depflags" ]; then
3632         eval ${1}_DEPFLAGS=\$_depflags
3633     else
3634         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3635         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3636         eval DEP${1}FLAGS=\$_flags
3637     fi
3638 }
3639
3640 probe_cc cc "$cc"
3641 cflags_filter=$_flags_filter
3642 cflags_speed=$_cflags_speed
3643 cflags_size=$_cflags_size
3644 cflags_noopt=$_cflags_noopt
3645 add_cflags $_flags $_cflags
3646 cc_ldflags=$_ldflags
3647 set_ccvars CC
3648
3649 probe_cc hostcc "$host_cc"
3650 host_cflags_filter=$_flags_filter
3651 add_host_cflags  $_flags $_cflags
3652 set_ccvars HOSTCC
3653
3654 test -n "$cc_type" && enable $cc_type ||
3655     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3656
3657 : ${as_default:=$cc}
3658 : ${dep_cc_default:=$cc}
3659 : ${ld_default:=$cc}
3660 : ${host_ld_default:=$host_cc}
3661 set_default ar as dep_cc ld host_ld windres
3662
3663 probe_cc as "$as"
3664 asflags_filter=$_flags_filter
3665 add_asflags $_flags $_cflags
3666 set_ccvars AS
3667
3668 probe_cc ld "$ld"
3669 ldflags_filter=$_flags_filter
3670 add_ldflags $_flags $_ldflags
3671 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3672 LD_O=${_ld_o-$LD_O}
3673 LD_LIB=${_ld_lib-$LD_LIB}
3674 LD_PATH=${_ld_path-$LD_PATH}
3675
3676 probe_cc hostld "$host_ld"
3677 host_ldflags_filter=$_flags_filter
3678 add_host_ldflags $_flags $_ldflags
3679 HOSTLD_O=${_ld_o-$HOSTLD_O}
3680
3681 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3682     probe_cc depcc "$dep_cc"
3683     CCDEP=${_DEPCMD:-$DEPCMD}
3684     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3685     DEPCCFLAGS=$_flags
3686 fi
3687
3688 if $ar 2>&1 | grep -q Microsoft; then
3689     arflags="-nologo"
3690     ar_o='-out:$@'
3691 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3692     arflags="rq"
3693     ar_o='$@'
3694 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3695     arflags='-Xany -r -c'
3696     ar_o='$@'
3697 elif $ar 2>&1 | grep -q "\[D\] "; then
3698     arflags="rcD"
3699     ar_o='$@'
3700 else
3701     arflags="rc"
3702     ar_o='$@'
3703 fi
3704
3705 add_cflags $extra_cflags
3706 add_cxxflags $extra_cxxflags
3707 add_asflags $extra_cflags
3708
3709 if test -n "$sysroot"; then
3710     case "$cc_type" in
3711         gcc|llvm_gcc|clang)
3712             add_cppflags --sysroot="$sysroot"
3713             add_ldflags --sysroot="$sysroot"
3714 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3715             add_cppflags -isysroot "$sysroot"
3716             add_ldflags -isysroot "$sysroot"
3717         ;;
3718         tms470)
3719             add_cppflags -I"$sysinclude"
3720             add_ldflags  --sysroot="$sysroot"
3721         ;;
3722     esac
3723 fi
3724
3725 if test "$cpu" = host; then
3726     enabled cross_compile &&
3727         die "--cpu=host makes no sense when cross-compiling."
3728
3729     case "$cc_type" in
3730         gcc|llvm_gcc)
3731             check_native(){
3732                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3733                 sed -n "/cc1.*$1=/{
3734                             s/.*$1=\\([^ ]*\\).*/\\1/
3735                             p
3736                             q
3737                         }" $TMPE
3738             }
3739             cpu=$(check_native -march || check_native -mcpu)
3740         ;;
3741     esac
3742
3743     test "${cpu:-host}" = host &&
3744         die "--cpu=host not supported with compiler $cc"
3745 fi
3746
3747 # Deal with common $arch aliases
3748 case "$arch" in
3749     aarch64|arm64)
3750         arch="aarch64"
3751     ;;
3752     arm*|iPad*|iPhone*)
3753         arch="arm"
3754     ;;
3755     mips*|IP*)
3756         arch="mips"
3757     ;;
3758     parisc*|hppa*)
3759         arch="parisc"
3760     ;;
3761     "Power Macintosh"|ppc*|powerpc*)
3762         arch="ppc"
3763     ;;
3764     s390|s390x)
3765         arch="s390"
3766     ;;
3767     sh4|sh)
3768         arch="sh4"
3769     ;;
3770     sun4u|sparc*)
3771         arch="sparc"
3772     ;;
3773     tilegx|tile-gx)
3774         arch="tilegx"
3775     ;;
3776     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3777         arch="x86"
3778     ;;
3779 esac
3780
3781 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3782 enable $arch
3783
3784 # Add processor-specific flags
3785 if enabled aarch64; then
3786
3787     case $cpu in
3788         armv*)
3789             cpuflags="-march=$cpu"
3790         ;;
3791         *)
3792             cpuflags="-mcpu=$cpu"
3793         ;;
3794     esac
3795
3796 elif enabled alpha; then
3797
3798     cpuflags="-mcpu=$cpu"
3799
3800 elif enabled arm; then
3801
3802     check_arm_arch() {
3803         check_cpp_condition stddef.h \
3804             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3805             $cpuflags
3806     }
3807
3808     probe_arm_arch() {
3809         if   check_arm_arch 4;        then echo armv4;
3810         elif check_arm_arch 4T;       then echo armv4t;
3811         elif check_arm_arch 5;        then echo armv5;
3812         elif check_arm_arch 5E;       then echo armv5e;
3813         elif check_arm_arch 5T;       then echo armv5t;
3814         elif check_arm_arch 5TE;      then echo armv5te;
3815         elif check_arm_arch 5TEJ;     then echo armv5te;
3816         elif check_arm_arch 6;        then echo armv6;
3817         elif check_arm_arch 6J;       then echo armv6j;
3818         elif check_arm_arch 6K;       then echo armv6k;
3819         elif check_arm_arch 6Z;       then echo armv6z;
3820         elif check_arm_arch 6ZK;      then echo armv6zk;
3821         elif check_arm_arch 6T2;      then echo armv6t2;
3822         elif check_arm_arch 7;        then echo armv7;
3823         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3824         elif check_arm_arch 7S;       then echo armv7-a;
3825         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3826         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3827         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3828         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3829         fi
3830     }
3831
3832     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3833
3834     case $cpu in
3835         armv*)
3836             cpuflags="-march=$cpu"
3837             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3838         ;;
3839         *)
3840             cpuflags="-mcpu=$cpu"
3841             case $cpu in
3842                 cortex-a*)                               subarch=armv7a  ;;
3843                 cortex-r*)                               subarch=armv7r  ;;
3844                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3845                 arm11*)                                  subarch=armv6   ;;
3846                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3847                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3848                 *)                             subarch=$(probe_arm_arch) ;;
3849             esac
3850         ;;
3851     esac
3852
3853     case "$subarch" in
3854         armv5t*)    enable fast_clz                ;;
3855         armv[6-8]*)
3856             enable fast_clz
3857             disabled fast_unaligned || enable fast_unaligned
3858             ;;
3859     esac
3860
3861 elif enabled avr32; then
3862
3863     case $cpu in
3864         ap7[02]0[0-2])
3865             subarch="avr32_ap"
3866             cpuflags="-mpart=$cpu"
3867         ;;
3868         ap)
3869             subarch="avr32_ap"
3870             cpuflags="-march=$cpu"
3871         ;;
3872         uc3[ab]*)
3873             subarch="avr32_uc"
3874             cpuflags="-mcpu=$cpu"
3875         ;;
3876         uc)
3877             subarch="avr32_uc"
3878             cpuflags="-march=$cpu"
3879         ;;
3880     esac
3881
3882 elif enabled bfin; then
3883
3884     cpuflags="-mcpu=$cpu"
3885
3886 elif enabled mips; then
3887
3888     cpuflags="-march=$cpu"
3889
3890     case $cpu in
3891         24kc)
3892             disable mips32r5
3893             disable mips64r6
3894             disable mipsfpu
3895             disable mipsdspr1
3896             disable mipsdspr2
3897             disable msa
3898         ;;
3899         24kf*)
3900             disable mips32r5
3901             disable mips64r6
3902             disable mipsdspr1
3903             disable mipsdspr2
3904             disable msa
3905         ;;
3906         24kec|34kc|1004kc)
3907             disable mips32r5
3908             disable mips64r6
3909             disable mipsfpu
3910             disable mipsdspr2
3911             disable msa
3912         ;;
3913         24kef*|34kf*|1004kf*)
3914             disable mips32r5
3915             disable mips64r6
3916             disable mipsdspr2
3917             disable msa
3918         ;;
3919         74kc)
3920             disable mips32r5
3921             disable mips64r6
3922             disable mipsfpu
3923             disable msa
3924         ;;
3925         74kf)
3926             disable mips32r5
3927             disable mips64r6
3928             disable msa
3929         ;;
3930         p5600)
3931             disable mips64r6
3932             disable mipsdspr1
3933             disable mipsdspr2
3934
3935             check_cflags "-mtune=p5600"
3936         ;;
3937         i6400)
3938             disable mips32r5
3939             disable mipsdspr1
3940             disable mipsdspr2
3941             disable mipsfpu
3942
3943             check_cflags "-mtune=i6400 -mabi=64"
3944             check_ldflags "-mabi=64"
3945         ;;
3946         loongson3*)
3947             disable mipsfpu
3948             disable mips32r2
3949             disable mips32r5
3950             disable mips64r6
3951             disable mipsdspr1
3952             disable mipsdspr2
3953             disable msa
3954             enable local_aligned_8 local_aligned_16
3955             enable simd_align_16
3956             enable fast_64bit
3957             enable fast_clz
3958             enable fast_cmov
3959             enable fast_unaligned
3960             disable aligned_stack
3961             cpuflags="-march=loongson3a -mhard-float"
3962         ;;
3963         generic)
3964             disable mips32r5
3965             disable mips64r6
3966             disable msa
3967         ;;
3968     esac
3969
3970 elif enabled ppc; then
3971
3972     disable ldbrx
3973     disable vsx
3974
3975     case $(tolower $cpu) in
3976         601|ppc601|powerpc601)
3977             cpuflags="-mcpu=601"
3978             disable altivec
3979         ;;
3980         603*|ppc603*|powerpc603*)
3981             cpuflags="-mcpu=603"
3982             disable altivec
3983         ;;
3984         604*|ppc604*|powerpc604*)
3985             cpuflags="-mcpu=604"
3986             disable altivec
3987         ;;
3988         g3|75*|ppc75*|powerpc75*)
3989             cpuflags="-mcpu=750"
3990             disable altivec
3991         ;;
3992         g4|745*|ppc745*|powerpc745*)
3993             cpuflags="-mcpu=7450"
3994         ;;
3995         74*|ppc74*|powerpc74*)
3996             cpuflags="-mcpu=7400"
3997         ;;
3998         g5|970|ppc970|powerpc970)
3999             cpuflags="-mcpu=970"
4000         ;;
4001         power[3-8]*)
4002             cpuflags="-mcpu=$cpu"
4003         ;;
4004         cell)
4005             cpuflags="-mcpu=cell"
4006             enable ldbrx
4007         ;;
4008         e500mc)
4009             cpuflags="-mcpu=e500mc"
4010             disable altivec
4011         ;;
4012         e500v2)
4013             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4014             disable altivec
4015             disable dcbzl
4016         ;;
4017         e500)
4018             cpuflags="-mcpu=8540 -mhard-float"
4019             disable altivec
4020             disable dcbzl
4021         ;;
4022     esac
4023
4024 elif enabled sparc; then
4025
4026     case $cpu in
4027         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4028             cpuflags="-mcpu=$cpu"
4029         ;;
4030         ultrasparc*|niagara[234])
4031             cpuflags="-mcpu=$cpu"
4032         ;;
4033     esac
4034
4035 elif enabled x86; then
4036
4037     case $cpu in
4038         i[345]86|pentium)
4039             cpuflags="-march=$cpu"
4040             disable i686
4041             disable mmx
4042         ;;
4043         # targets that do NOT support nopl and conditional mov (cmov)
4044         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4045             cpuflags="-march=$cpu"
4046             disable i686
4047         ;;
4048         # targets that do support nopl and conditional mov (cmov)
4049         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4050         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4051             cpuflags="-march=$cpu"
4052             enable i686
4053             enable fast_cmov
4054         ;;
4055         # targets that do support conditional mov but on which it's slow
4056         pentium4|pentium4m|prescott|nocona)
4057             cpuflags="-march=$cpu"
4058             enable i686
4059             disable fast_cmov
4060         ;;
4061     esac
4062
4063 fi
4064
4065 if [ "$cpu" != generic ]; then
4066     add_cflags  $cpuflags
4067     add_asflags $cpuflags
4068 fi
4069
4070 # compiler sanity check
4071 check_exec <<EOF
4072 int main(void){ return 0; }
4073 EOF
4074 if test "$?" != 0; then
4075     echo "$cc is unable to create an executable file."
4076     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4077         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4078         echo "Only do this if you know what cross compiling means."
4079     fi
4080     die "C compiler test failed."
4081 fi
4082
4083 add_cppflags -D_ISOC99_SOURCE
4084 add_cxxflags -D__STDC_CONSTANT_MACROS
4085 check_cflags -std=c99
4086 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4087 #include <stdlib.h>
4088 EOF
4089 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4090 #include <stdlib.h>
4091 EOF
4092
4093 add_host_cppflags -D_ISOC99_SOURCE
4094 check_host_cflags -std=c99
4095 check_host_cflags -Wall
4096 check_host_cflags -O3
4097
4098 check_64bit(){
4099     arch32=$1
4100     arch64=$2
4101     expr=$3
4102     check_code cc "" "int test[2*($expr) - 1]" &&
4103         subarch=$arch64 || subarch=$arch32
4104 }
4105
4106 case "$arch" in
4107     aarch64|alpha|ia64)
4108         spic=$shared
4109     ;;
4110     mips)
4111         check_64bit mips mips64 '_MIPS_SIM > 1'
4112         spic=$shared
4113     ;;
4114     parisc)
4115         check_64bit parisc parisc64 'sizeof(void *) > 4'
4116         spic=$shared
4117     ;;
4118     ppc)
4119         check_64bit ppc ppc64 'sizeof(void *) > 4'
4120         spic=$shared
4121     ;;
4122     s390)
4123         check_64bit s390 s390x 'sizeof(void *) > 4'
4124         spic=$shared
4125     ;;
4126     sparc)
4127         check_64bit sparc sparc64 'sizeof(void *) > 4'
4128         spic=$shared
4129     ;;
4130     x86)
4131         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4132         # Treat x32 as x64 for now. Note it also needs spic=$shared
4133         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4134             subarch=x86_64
4135         if test "$subarch" = "x86_64"; then
4136             spic=$shared
4137         fi
4138     ;;
4139     ppc)
4140         check_cc <<EOF && subarch="ppc64"
4141         int test[(int)sizeof(char*) - 7];
4142 EOF
4143     ;;
4144 esac
4145
4146 enable $subarch
4147 enabled spic && enable_weak pic
4148
4149 # OS specific
4150 case $target_os in
4151     aix)
4152         SHFLAGS=-shared
4153         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4154         enabled shared && add_ldflags -Wl,-brtl
4155         ;;
4156     android)
4157         disable symver
4158         enable section_data_rel_ro
4159         SLIB_INSTALL_NAME='$(SLIBNAME)'
4160         SLIB_INSTALL_LINKS=
4161         # soname not set on purpose
4162         SHFLAGS=-shared
4163         ;;
4164     haiku)
4165         prefix_default="/boot/common"
4166         network_extralibs="-lnetwork"
4167         host_libs=
4168         ;;
4169     sunos)
4170         SHFLAGS='-shared -Wl,-h,$$(@F)'
4171         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4172         network_extralibs="-lsocket -lnsl"
4173         add_cppflags -D__EXTENSIONS__
4174         # When using suncc to build, the Solaris linker will mark
4175         # an executable with each instruction set encountered by
4176         # the Solaris assembler.  As our libraries contain their own
4177         # guards for processor-specific code, instead suppress
4178         # generation of the HWCAPS ELF section on Solaris x86 only.
4179         enabled_all suncc x86 &&
4180             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4181             add_ldflags -Wl,-M,mapfile
4182         nm_default='nm -P -g'
4183         ;;
4184     netbsd)
4185         disable symver
4186         oss_indev_extralibs="-lossaudio"
4187         oss_outdev_extralibs="-lossaudio"
4188         enabled gcc || check_ldflags -Wl,-zmuldefs
4189         ;;
4190     openbsd|bitrig)
4191         disable symver
4192         SHFLAGS='-shared'
4193         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4194         SLIB_INSTALL_LINKS=
4195         oss_indev_extralibs="-lossaudio"
4196         oss_outdev_extralibs="-lossaudio"
4197         ;;
4198     dragonfly)
4199         disable symver
4200         ;;
4201     freebsd)
4202         ;;
4203     bsd/os)
4204         add_extralibs -lpoll -lgnugetopt
4205         strip="strip -d"
4206         ;;
4207     darwin)
4208         enabled ppc && add_asflags -force_cpusubtype_ALL
4209         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4210         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4211         strip="${strip} -x"
4212         add_ldflags -Wl,-dynamic,-search_paths_first
4213         SLIBSUF=".dylib"
4214         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4215         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4216         objformat="macho"
4217         enabled x86_64 && objformat="macho64"
4218         enabled_any pic shared x86_64 ||
4219             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4220         ;;
4221     mingw32*)
4222         if test $target_os = "mingw32ce"; then
4223             disable network
4224         else
4225             target_os=mingw32
4226         fi
4227         LIBTARGET=i386
4228         if enabled x86_64; then
4229             LIBTARGET="i386:x86-64"
4230         elif enabled arm; then
4231             LIBTARGET=arm-wince
4232         fi
4233         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4234         check_ldflags -Wl,--nxcompat
4235         check_ldflags -Wl,--dynamicbase
4236         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4237         shlibdir_default="$bindir_default"
4238         SLIBPREF=""
4239         SLIBSUF=".dll"
4240         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4241         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4242         dlltool="${cross_prefix}dlltool"
4243         if check_cmd lib.exe -list; then
4244             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4245             if enabled x86_64; then
4246                 LIBTARGET=x64
4247             fi
4248         elif check_cmd $dlltool --version; then
4249             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4250         fi
4251         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4252         SLIB_INSTALL_LINKS=
4253         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4254         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4255         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4256         objformat="win32"
4257         ranlib=:
4258         enable dos_paths
4259         ;;
4260     win32|win64)
4261         disable symver
4262         if enabled shared; then
4263             # Link to the import library instead of the normal static library
4264             # for shared libs.
4265             LD_LIB='%.lib'
4266             # Cannot build both shared and static libs with MSVC or icl.
4267             disable static
4268         fi
4269         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4270         shlibdir_default="$bindir_default"
4271         SLIBPREF=""
4272         SLIBSUF=".dll"
4273         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4274         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4275         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4276         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4277         SLIB_INSTALL_LINKS=
4278         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4279         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4280         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4281         objformat="win32"
4282         ranlib=:
4283         enable dos_paths
4284         ;;
4285     cygwin*)
4286         target_os=cygwin
4287         shlibdir_default="$bindir_default"
4288         SLIBPREF="cyg"
4289         SLIBSUF=".dll"
4290         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4291         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4292         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4293         SLIB_INSTALL_LINKS=
4294         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4295         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4296         objformat="win32"
4297         enable dos_paths
4298         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4299         ;;
4300     *-dos|freedos|opendos)
4301         network_extralibs="-lsocket"
4302         objformat="coff"
4303         enable dos_paths
4304         add_cppflags -U__STRICT_ANSI__
4305         ;;
4306     linux)
4307         enable dv1394
4308         enable section_data_rel_ro
4309         ;;
4310     irix*)
4311         target_os=irix
4312         ranlib="echo ignoring ranlib"
4313         ;;
4314     os/2*)
4315         strip="lxlite -CS"
4316         ln_s="cp -f"
4317         objformat="aout"
4318         add_cppflags -D_GNU_SOURCE
4319         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4320         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4321         LIBSUF="_s.a"
4322         SLIBPREF=""
4323         SLIBSUF=".dll"
4324         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4325         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4326         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4327             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4328             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4329             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4330             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4331         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4332             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4333         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4334         enable dos_paths
4335         enable_weak os2threads
4336         ;;
4337     gnu/kfreebsd)
4338         add_cppflags -D_BSD_SOURCE
4339         ;;
4340     gnu)
4341         ;;
4342     qnx)
4343         add_cppflags -D_QNX_SOURCE
4344         network_extralibs="-lsocket"
4345         ;;
4346     symbian)
4347         SLIBSUF=".dll"
4348         enable dos_paths
4349         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4350         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4351         add_ldflags -Wl,--target1-abs,--no-undefined \
4352                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4353                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4354         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4355                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4356                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4357         ;;
4358     osf1)
4359         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4360         ;;
4361     minix)
4362         ;;
4363     plan9)
4364         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4365                      -D_REENTRANT_SOURCE        \
4366                      -D_RESEARCH_SOURCE         \
4367                      -DFD_SETSIZE=96            \
4368                      -DHAVE_SOCK_OPTS
4369         add_compat strtod.o strtod=avpriv_strtod
4370         network_extralibs='-lbsd'
4371         exeobjs=compat/plan9/main.o
4372         disable ffserver
4373         cp_f='cp'
4374         ;;
4375     none)
4376         ;;
4377     *)
4378         die "Unknown OS '$target_os'."
4379         ;;
4380 esac
4381
4382 # determine libc flavour
4383
4384 probe_libc(){
4385     pfx=$1
4386     pfx_no_=${pfx%_}
4387     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4388     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4389         eval ${pfx}libc_type=uclibc
4390         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4391     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4392         eval ${pfx}libc_type=glibc
4393         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4394     # MinGW headers can be installed on Cygwin, so check for newlib first.
4395     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4396         eval ${pfx}libc_type=newlib
4397         add_${pfx}cppflags -U__STRICT_ANSI__
4398     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4399     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4400         eval ${pfx}libc_type=mingw64
4401         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4402             add_compat msvcrt/snprintf.o
4403             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4404         fi
4405         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4406         eval test \$${pfx_no_}cc_type = "gcc" &&
4407             add_${pfx}cppflags -D__printf__=__gnu_printf__
4408     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4409          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4410         eval ${pfx}libc_type=mingw32
4411         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4412             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4413             die "ERROR: MinGW32 runtime version must be >= 3.15."
4414         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4415         eval test \$${pfx_no_}cc_type = "gcc" &&
4416             add_${pfx}cppflags -D__printf__=__gnu_printf__
4417     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4418         eval ${pfx}libc_type=msvcrt
4419         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4420         # 0x601 by default unless something else is set by the user.
4421         # This can easily lead to us detecting functions only present
4422         # in such new versions and producing binaries requiring windows 7.0.
4423         # Therefore explicitly set the default to XP unless the user has
4424         # set something else on the command line.
4425         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4426             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4427     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4428         eval ${pfx}libc_type=klibc
4429     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4430         eval ${pfx}libc_type=bionic
4431     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4432         eval ${pfx}libc_type=solaris
4433         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4434     fi
4435     check_${pfx}cc <<EOF
4436 #include <time.h>
4437 void *v = localtime_r;
4438 EOF
4439 test "$?" != 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
4440 #include <time.h>
4441 void *v = localtime_r;
4442 EOF
4443
4444 }
4445
4446 probe_libc
4447 test -n "$libc_type" && enable libc_$libc_type
4448 probe_libc host_
4449 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4450
4451 case $libc_type in
4452     bionic)
4453         add_compat strtod.o strtod=avpriv_strtod
4454         ;;
4455     msvcrt)
4456         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4457             add_compat strtod.o strtod=avpriv_strtod
4458             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4459                                          _snprintf=avpriv_snprintf  \
4460                                          vsnprintf=avpriv_vsnprintf
4461         fi
4462         ;;
4463 esac
4464
4465 # hacks for compiler/libc/os combinations
4466
4467 if enabled_all tms470 libc_glibc; then
4468     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4469     add_cppflags -D__USER_LABEL_PREFIX__=
4470     add_cppflags -D__builtin_memset=memset
4471     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4472     add_cflags   -pds=48    # incompatible redefinition of macro
4473 fi
4474
4475 if enabled_all ccc libc_glibc; then
4476     add_ldflags -Wl,-z,now  # calls to libots crash without this
4477 fi
4478
4479 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4480     add_cppflags '-I\$(SRC_PATH)/compat/float'
4481
4482 esc(){
4483     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4484 }
4485
4486 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4487
4488 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4489
4490 set_default libdir
4491 : ${shlibdir_default:="$libdir"}
4492 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4493
4494 set_default $PATHS_LIST
4495 set_default nm
4496
4497 # we need to build at least one lib type
4498 if ! enabled_any static shared; then
4499     cat <<EOF
4500 At least one library type must be built.
4501 Specify --enable-static to build the static libraries or --enable-shared to
4502 build the shared libraries as well. To only build the shared libraries specify
4503 --disable-static in addition to --enable-shared.
4504 EOF
4505     exit 1;
4506 fi
4507
4508 die_license_disabled() {
4509     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4510 }
4511
4512 die_license_disabled_gpl() {
4513     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4514 }
4515
4516 die_license_disabled gpl frei0r
4517 die_license_disabled gpl libcdio
4518 die_license_disabled gpl libsmbclient
4519 die_license_disabled gpl libutvideo
4520 die_license_disabled gpl libvidstab
4521 die_license_disabled gpl libx264
4522 die_license_disabled gpl libx265
4523 die_license_disabled gpl libxavs
4524 die_license_disabled gpl libxvid
4525 die_license_disabled gpl libzvbi
4526 die_license_disabled gpl x11grab
4527
4528 die_license_disabled nonfree libaacplus
4529 die_license_disabled nonfree libfaac
4530 die_license_disabled nonfree nvenc
4531 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4532 enabled gpl && die_license_disabled_gpl nonfree openssl
4533
4534 die_license_disabled version3 libopencore_amrnb
4535 die_license_disabled version3 libopencore_amrwb
4536 die_license_disabled version3 libsmbclient
4537 die_license_disabled version3 libvo_aacenc
4538 die_license_disabled version3 libvo_amrwbenc
4539
4540 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4541
4542 disabled optimizations || check_cflags -fomit-frame-pointer
4543
4544 enable_weak_pic() {
4545     disabled pic && return
4546     enable pic
4547     add_cppflags -DPIC
4548     case "$target_os" in
4549     mingw*|cygwin*)
4550         ;;
4551     *)
4552         add_cflags -fPIC
4553         ;;
4554     esac
4555     add_asflags  -fPIC
4556 }
4557
4558 enabled pic && enable_weak_pic
4559
4560 check_cc <<EOF || die "Symbol mangling check failed."
4561 int ff_extern;
4562 EOF
4563 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4564 extern_prefix=${sym%%ff_extern*}
4565
4566 check_cc <<EOF && enable_weak inline_asm
4567 void foo(void) { __asm__ volatile ("" ::); }
4568 EOF
4569
4570 _restrict=
4571 for restrict_keyword in restrict __restrict__ __restrict; do
4572     check_cc <<EOF && _restrict=$restrict_keyword && break
4573 void foo(char * $restrict_keyword p);
4574 EOF
4575 done
4576
4577 check_cc <<EOF && enable pragma_deprecated
4578 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4579 EOF
4580
4581 check_cc <<EOF && enable attribute_packed
4582 struct { int x; } __attribute__((packed)) x;
4583 EOF
4584
4585 check_cc <<EOF && enable attribute_may_alias
4586 union { int x; } __attribute__((may_alias)) x;
4587 EOF
4588
4589 check_cc <<EOF || die "endian test failed"
4590 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4591 EOF
4592 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4593
4594 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4595     if ! enabled bigendian && enabled altivec ;then
4596         enable vsx
4597     fi
4598 fi
4599
4600 check_gas() {
4601     log "check_gas using '$as' as AS"
4602     # :vararg is used on aarch64, arm and ppc altivec
4603     check_as <<EOF || return 1
4604 .macro m n, y:vararg=0
4605 \n: .int \y
4606 .endm
4607 m x
4608 EOF
4609     # .altmacro is only used in arm asm
4610     ! enabled arm || check_as <<EOF || return 1
4611 .altmacro
4612 EOF
4613     enable gnu_as
4614     return 0
4615 }
4616
4617 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4618     nogas=:
4619     enabled_any arm aarch64 && nogas=die
4620     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4621     as_noop=-v
4622
4623     case $as_type in
4624         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4625         gcc)  gaspp_as_type=gas ;;
4626         *)    gaspp_as_type=$as_type ;;
4627     esac
4628
4629     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4630
4631     test "${as#*gas-preprocessor.pl}" != "$as" ||
4632     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4633         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4634
4635     if ! check_gas ; then
4636         as=${gas:=$as}
4637         check_gas || \
4638             $nogas "GNU assembler not found, install/update gas-preprocessor"
4639     fi
4640
4641     check_as <<EOF && enable as_func
4642 .func test
4643 .endfunc
4644 EOF
4645 fi
4646
4647 check_inline_asm inline_asm_labels '"1:\n"'
4648
4649 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4650
4651 if enabled aarch64; then
4652     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4653     # internal assembler in clang 3.3 does not support this instruction
4654     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4655     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4656
4657     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4658
4659 elif enabled alpha; then
4660
4661     check_cflags -mieee
4662
4663 elif enabled arm; then
4664
4665     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4666 float func(float a, float b){ return a+b; }
4667 EOF
4668
4669     enabled thumb && check_cflags -mthumb || check_cflags -marm
4670
4671     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4672         enable vfp_args
4673     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4674         case "${cross_prefix:-$cc}" in
4675             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4676             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4677 __asm__ (".eabi_attribute 28, 1");
4678 int main(void) { return 0; }
4679 EOF
4680         esac
4681         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4682     fi
4683
4684     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4685     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4686     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4687     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4688     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4689     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4690     enabled setend  && check_insn setend  'setend be'
4691
4692     [ $target_os = linux ] || [ $target_os = android ] ||
4693         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4694             $ARCH_EXT_LIST_ARM
4695
4696     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4697
4698     check_as <<EOF && enable as_dn_directive
4699 ra .dn d0.i16
4700 .unreq ra
4701 EOF
4702
4703     # llvm's integrated assembler supports .object_arch from llvm 3.5
4704     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4705 .object_arch armv4
4706 EOF
4707
4708     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4709
4710 elif enabled mips; then
4711
4712     # Enable minimum ISA based on selected options
4713     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4714         add_cflags "-mips64r2"
4715         add_asflags "-mips64r2"
4716     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4717         add_cflags "-mips64"
4718         add_asflags "-mips64"
4719     elif enabled mipsdspr1 || enabled mipsdspr2; then
4720         add_cflags "-mips32r2 -mfp32"
4721         add_asflags "-mips32r2 -mfp32"
4722     elif enabled mips32r5 || enabled mips64r6; then
4723         check_cflags "-mfp64"
4724         check_ldflags "-mfp64"
4725     fi
4726
4727     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4728      check_ldflags "-mips32r5" &&
4729      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4730     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4731      check_ldflags "-mips64r6" &&
4732      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4733     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4734      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4735     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4736      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4737     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4738      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4739     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4740      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4741     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4742
4743     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4744     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4745     enabled msa && add_asflags "-mmsa"
4746
4747 elif enabled parisc; then
4748
4749     if enabled gcc; then
4750         case $($cc -dumpversion) in
4751             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4752         esac
4753     fi
4754
4755 elif enabled ppc; then
4756
4757     enable local_aligned_8 local_aligned_16 local_aligned_32
4758
4759     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4760     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4761     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4762     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4763
4764     # AltiVec flags: The FSF version of GCC differs from the Apple version
4765     if enabled altivec; then
4766         check_cflags -maltivec -mabi=altivec &&
4767         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4768         check_cflags -faltivec
4769
4770         # check if our compiler supports Motorola AltiVec C API
4771         check_cc <<EOF || disable altivec
4772 $inc_altivec_h
4773 int main(void) {
4774     vector signed int v1 = (vector signed int) { 0 };
4775     vector signed int v2 = (vector signed int) { 1 };
4776     v1 = vec_add(v1, v2);
4777     return 0;
4778 }
4779 EOF
4780
4781         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4782     fi
4783
4784     if enabled vsx; then
4785         check_cflags -mvsx
4786     fi
4787 elif enabled x86; then
4788
4789     check_builtin rdtsc    intrin.h   "__rdtsc()"
4790     check_builtin mm_empty mmintrin.h "_mm_empty()"
4791
4792     enable local_aligned_8 local_aligned_16 local_aligned_32
4793
4794     # check whether EBP is available on x86
4795     # As 'i' is stored on the stack, this program will crash
4796     # if the base pointer is used to access it because the
4797     # base pointer is cleared in the inline assembly code.
4798     check_exec_crash <<EOF && enable ebp_available
4799 volatile int i=0;
4800 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4801 return i;
4802 EOF
4803
4804     # check whether EBX is available on x86
4805     check_inline_asm ebx_available '""::"b"(0)' &&
4806         check_inline_asm ebx_available '"":::"%ebx"'
4807
4808     # check whether xmm clobbers are supported
4809     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4810
4811     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4812         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4813
4814     # check whether binutils is new enough to compile SSSE3/MMXEXT
4815     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4816     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4817
4818     if ! disabled_any asm mmx yasm; then
4819         if check_cmd $yasmexe --version; then
4820             enabled x86_64 && yasm_extra="-m amd64"
4821             yasm_debug="-g dwarf2"
4822         elif check_cmd nasm -v; then
4823             yasmexe=nasm
4824             yasm_debug="-g -F dwarf"
4825             if enabled x86_64; then
4826                 case "$objformat" in
4827                     elf)   objformat=elf64 ;;
4828                     win32) objformat=win64 ;;
4829                 esac
4830             fi
4831         fi
4832
4833         YASMFLAGS="-f $objformat $yasm_extra"
4834         enabled pic               && append YASMFLAGS "-DPIC"
4835         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4836         case "$objformat" in
4837             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4838         esac
4839
4840         check_yasm "movbe ecx, [5]" && enable yasm ||
4841             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4842         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4843         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4844         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4845         check_yasm "CPU amdnop" || disable cpunop
4846     fi
4847
4848     case "$cpu" in
4849         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4850             disable fast_clz
4851         ;;
4852     esac
4853
4854 fi
4855
4856 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4857
4858 check_ldflags -Wl,--as-needed
4859 check_ldflags -Wl,-z,noexecstack
4860
4861 if check_func dlopen; then
4862     ldl=
4863 elif check_func dlopen -ldl; then
4864     ldl=-ldl
4865 fi
4866
4867 frei0r_filter_extralibs='$ldl'
4868 frei0r_src_filter_extralibs='$ldl'
4869 ladspa_filter_extralibs='$ldl'
4870 nvenc_encoder_extralibs='$ldl'
4871
4872 if ! disabled network; then
4873     check_func getaddrinfo $network_extralibs
4874     check_func getservbyport $network_extralibs
4875     check_func inet_aton $network_extralibs
4876
4877     check_type netdb.h "struct addrinfo"
4878     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4879     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4880     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4881     check_type poll.h "struct pollfd"
4882     check_type netinet/sctp.h "struct sctp_event_subscribe"
4883     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4884     check_type netinet/in.h "struct sockaddr_in6"
4885     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4886     check_type "sys/types.h sys/socket.h" socklen_t
4887
4888     # Prefer arpa/inet.h over winsock2
4889     if check_header arpa/inet.h ; then
4890         check_func closesocket
4891     elif check_header winsock2.h ; then
4892         check_func_headers winsock2.h closesocket -lws2 &&
4893             network_extralibs="-lws2" ||
4894         { check_func_headers winsock2.h closesocket -lws2_32 &&
4895             network_extralibs="-lws2_32"; } || disable winsock2_h network
4896         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4897
4898         check_type ws2tcpip.h socklen_t
4899         check_type ws2tcpip.h "struct addrinfo"
4900         check_type ws2tcpip.h "struct group_source_req"
4901         check_type ws2tcpip.h "struct ip_mreq_source"
4902         check_type ws2tcpip.h "struct ipv6_mreq"
4903         check_type winsock2.h "struct pollfd"
4904         check_struct winsock2.h "struct sockaddr" sa_len
4905         check_type ws2tcpip.h "struct sockaddr_in6"
4906         check_type ws2tcpip.h "struct sockaddr_storage"
4907     else
4908         disable network
4909     fi
4910 fi
4911
4912 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4913 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4914 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4915 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4916 check_builtin sarestart signal.h "SA_RESTART"
4917 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4918
4919 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4920 check_func  ${malloc_prefix}memalign            && enable memalign
4921 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4922
4923 check_func  access
4924 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4925 check_func  fcntl
4926 check_func  fork
4927 check_func  gethrtime
4928 check_func  getopt
4929 check_func  getrusage
4930 check_func  gettimeofday
4931 check_func  gmtime_r
4932 check_func  isatty
4933 check_func  localtime_r
4934 check_func  mach_absolute_time
4935 check_func  mkstemp
4936 check_func  mmap
4937 check_func  mprotect
4938 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4939 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4940 check_func  sched_getaffinity
4941 check_func  setrlimit
4942 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4943 check_func  strerror_r
4944 check_func  sysconf
4945 check_func  sysctl
4946 check_func  usleep
4947
4948 check_func_headers conio.h kbhit
4949 check_func_headers io.h setmode
4950 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4951 check_func_headers stdlib.h getenv
4952
4953 check_func_headers windows.h CoTaskMemFree -lole32
4954 check_func_headers windows.h GetProcessAffinityMask
4955 check_func_headers windows.h GetProcessTimes
4956 check_func_headers windows.h GetSystemTimeAsFileTime
4957 check_func_headers windows.h MapViewOfFile
4958 check_func_headers windows.h PeekNamedPipe
4959 check_func_headers windows.h SetConsoleTextAttribute
4960 check_func_headers windows.h Sleep
4961 check_func_headers windows.h VirtualAlloc
4962 check_struct windows.h "CONDITION_VARIABLE" Ptr
4963 check_func_headers glob.h glob
4964 enabled xlib &&
4965     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4966
4967 check_header direct.h
4968 check_header dlfcn.h
4969 check_header d3d11.h
4970 check_header dxva.h
4971 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4972 check_header io.h
4973 check_header libcrystalhd/libcrystalhd_if.h
4974 check_header mach/mach_time.h
4975 check_header malloc.h
4976 check_header net/udplite.h
4977 check_header poll.h
4978 check_header sys/mman.h
4979 check_header sys/param.h
4980 check_header sys/resource.h
4981 check_header sys/select.h
4982 check_header sys/time.h
4983 check_header sys/un.h
4984 check_header termios.h
4985 check_header unistd.h
4986 check_header valgrind/valgrind.h
4987 check_header vdpau/vdpau.h
4988 check_header vdpau/vdpau_x11.h
4989 check_header VideoDecodeAcceleration/VDADecoder.h
4990 check_header windows.h
4991 check_header X11/extensions/XvMClib.h
4992 check_header asm/types.h
4993
4994 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4995 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4996 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4997
4998 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4999
5000 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5001 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5002
5003 if ! disabled w32threads && ! enabled pthreads; then
5004     check_func_headers "windows.h process.h" _beginthreadex &&
5005         enable w32threads || disable w32threads
5006 fi
5007
5008 # check for some common methods of building with pthread support
5009 # do this before the optional library checks as some of them require pthreads
5010 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5011     enable pthreads
5012     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5013         add_cflags -pthread
5014         add_extralibs -pthread
5015     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5016         add_cflags -pthreads
5017         add_extralibs -pthreads
5018     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5019         add_cflags -ldl -pthread
5020         add_extralibs -ldl -pthread
5021     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5022         add_extralibs -lpthreadGC2
5023     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5024         :
5025     elif ! check_func pthread_join && ! check_func pthread_create; then
5026         disable pthreads
5027     fi
5028     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5029 fi
5030
5031
5032 if enabled pthreads; then
5033   check_func pthread_cancel
5034 fi
5035
5036 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5037 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5038 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5039
5040 check_lib math.h sin -lm && LIBM="-lm"
5041 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5042
5043 atan2f_args=2
5044 ldexpf_args=2
5045 powf_args=2
5046
5047 for func in $MATH_FUNCS; do
5048     eval check_mathfunc $func \${${func}_args:-1}
5049 done
5050
5051 # these are off by default, so fail if requested and not available
5052 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5053 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5054                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5055 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5056                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5057                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5058 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5059 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5060 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5061 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5062 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5063 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5064 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5065 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5066 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5067 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5068                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5069                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5070 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5071 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5072 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5073 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
5074 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"
5075 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5076 enabled fontconfig        && enable libfontconfig
5077 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5078 enabled libfreetype       && require_libfreetype
5079 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5080 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5081 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5082                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5083                                done || die "ERROR: libgsm not found"; }
5084 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5085 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5086 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5087 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5088 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5089 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5090 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5091 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5092 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5093 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5094                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5095                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5096                                die "ERROR: libopenjpeg not found"; }
5097 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5098 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5099 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5100 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5101 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5102 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5103 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5104                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5105 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5106 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5107 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5108 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5109     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5110     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5111 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5112 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5113                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5114                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5115 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5116 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5117 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5118 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5119 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5120 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5121 enabled libvpx            && {
5122     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5123                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
5124     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 ||
5125                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
5126     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
5127     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; } }
5128 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5129 enabled libwebp           && {
5130     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5131     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5132 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5133                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5134                                  warn "using libx264 without pkg-config"; } } &&
5135                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5136                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5137 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5138                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5139                                die "ERROR: libx265 version must be >= 57."; }
5140 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5141 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5142 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5143 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5144 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5145                                 { ! enabled cross_compile && {
5146                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5147                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5148                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5149                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5150                                die "ERROR: mmal not found"; }
5151 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5152                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5153                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5154                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5155 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5156                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5157                                die "ERROR: openal not found"; } &&
5158                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5159                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5160 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5161                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5162                                die "ERROR: opencl not found"; } &&
5163                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5164                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5165                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5166 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5167                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5168                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5169                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5170                                die "ERROR: opengl not found."
5171                              }
5172 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5173                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5174                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5175                                die "ERROR: openssl not found"; }
5176 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5177
5178 if enabled gnutls; then
5179     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
5180     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5181 fi
5182
5183 # libdc1394 check
5184 if enabled libdc1394; then
5185     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5186         enable libdc1394_2; } ||
5187     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5188         enable libdc1394_1; } ||
5189     die "ERROR: No version of libdc1394 found "
5190 fi
5191 if ! disabled sdl; then
5192     SDL_CONFIG="${cross_prefix}sdl-config"
5193     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5194         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5195         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5196         enable sdl
5197     else
5198         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5199             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5200             sdl_libs=$("${SDL_CONFIG}" --libs)
5201             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5202             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5203             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5204             enable sdl
5205         elif enabled sdl ; then
5206             die "ERROR: SDL not found"
5207         else
5208             disable sdl
5209         fi
5210     fi
5211 fi
5212 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5213
5214 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5215 enabled makeinfo && (makeinfo --version | \
5216                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5217     && enable makeinfo_html || disable makeinfo_html
5218 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5219 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5220 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5221 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5222
5223 check_header linux/fb.h
5224 check_header linux/videodev.h
5225 check_header linux/videodev2.h
5226 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5227
5228 check_header sys/videoio.h
5229 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5230
5231 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5232 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5233 # w32api 3.12 had it defined wrong
5234 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5235
5236 check_type "dshow.h" IBaseFilter
5237
5238 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5239 { check_header dev/bktr/ioctl_meteor.h &&
5240   check_header dev/bktr/ioctl_bt848.h; } ||
5241 { check_header machine/ioctl_meteor.h &&
5242   check_header machine/ioctl_bt848.h; } ||
5243 { check_header dev/video/meteor/ioctl_meteor.h &&
5244   check_header dev/video/bktr/ioctl_bt848.h; } ||
5245 check_header dev/ic/bt8xx.h
5246
5247 check_header sndio.h
5248 if check_struct sys/soundcard.h audio_buf_info bytes; then
5249     enable_safe sys/soundcard.h
5250 else
5251     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5252     #include <sys/soundcard.h>
5253     audio_buf_info abc;
5254 EOF
5255 fi
5256 check_header soundcard.h
5257
5258 enabled_any alsa_indev alsa_outdev &&
5259     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5260
5261 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5262     check_func jack_port_get_latency_range -ljack
5263
5264 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5265
5266 if enabled libcdio; then
5267     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5268     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5269     die "ERROR: No usable libcdio/cdparanoia found"
5270 fi
5271
5272 enabled xlib &&
5273     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5274
5275 if ! disabled libxcb; then
5276     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5277         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5278     } && disable x11grab && enable libxcb
5279
5280 if enabled libxcb; then
5281     disabled libxcb_shm || {
5282         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5283             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5284         } && check_header sys/shm.h && enable libxcb_shm; }
5285
5286     disabled libxcb_xfixes || {
5287         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5288             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5289         } && enable libxcb_xfixes; }
5290
5291     disabled libxcb_shape || {
5292         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5293             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5294         } && enable libxcb_shape; }
5295
5296     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5297     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5298 fi
5299 fi
5300
5301 if enabled x11grab; then
5302     enabled xlib || die "ERROR: Xlib not found"
5303     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5304     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5305 fi
5306
5307 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5308
5309 enabled dxva2api_h &&
5310     check_cc <<EOF && enable dxva2api_cobj
5311 #define _WIN32_WINNT 0x0600
5312 #define COBJMACROS
5313 #include <windows.h>
5314 #include <d3d9.h>
5315 #include <dxva2api.h>
5316 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5317 EOF
5318
5319 enabled d3d11_h &&
5320     check_cc <<EOF && enable d3d11_cobj
5321 #define _WIN32_WINNT 0x0600
5322 #define COBJMACROS
5323 #include <windows.h>
5324 #include <d3d11.h>
5325 int main(void) { ID3D11VideoDecoder *o = NULL; ID3D11VideoDecoder_Release(o); return 0; }
5326 EOF
5327
5328 enabled vaapi &&
5329     check_lib va/va.h vaInitialize -lva ||
5330     disable vaapi
5331
5332 enabled vaapi && enabled xlib &&
5333     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5334     enable vaapi_x11
5335
5336 enabled vdpau &&
5337     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5338     disable vdpau
5339
5340 enabled vdpau && enabled xlib &&
5341     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5342     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5343     enable vdpau_x11
5344
5345 # Funny iconv installations are not unusual, so check it after all flags have been set
5346 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5347
5348 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5349
5350 # add some useful compiler flags if supported
5351 check_cflags -Wdeclaration-after-statement
5352 check_cflags -Wall
5353 check_cflags -Wdisabled-optimization
5354 check_cflags -Wpointer-arith
5355 check_cflags -Wredundant-decls
5356 check_cflags -Wwrite-strings
5357 check_cflags -Wtype-limits
5358 check_cflags -Wundef
5359 check_cflags -Wmissing-prototypes
5360 check_cflags -Wno-pointer-to-int-cast
5361 check_cflags -Wstrict-prototypes
5362 check_cflags -Wempty-body
5363 enabled extra_warnings && check_cflags -Winline
5364
5365 check_disable_warning(){
5366     warning_flag=-W${1#-Wno-}
5367     test_cflags $warning_flag && add_cflags $1
5368 }
5369
5370 check_disable_warning -Wno-parentheses
5371 check_disable_warning -Wno-switch
5372 check_disable_warning -Wno-format-zero-length
5373 check_disable_warning -Wno-pointer-sign
5374
5375 # add some linker flags
5376 check_ldflags -Wl,--warn-common
5377 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5378 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5379 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5380
5381 # add some strip flags
5382 # -wN '..@*' is more selective than -x, but not available everywhere.
5383 check_stripflags -wN \'..@*\' || check_stripflags -x
5384
5385 enabled neon_clobber_test &&
5386     check_ldflags -Wl,--wrap,avcodec_open2              \
5387                   -Wl,--wrap,avcodec_decode_audio4      \
5388                   -Wl,--wrap,avcodec_decode_video2      \
5389                   -Wl,--wrap,avcodec_decode_subtitle2   \
5390                   -Wl,--wrap,avcodec_encode_audio2      \
5391                   -Wl,--wrap,avcodec_encode_video2      \
5392                   -Wl,--wrap,avcodec_encode_subtitle    \
5393                   -Wl,--wrap,swr_convert                \
5394                   -Wl,--wrap,avresample_convert ||
5395     disable neon_clobber_test
5396
5397 enabled xmm_clobber_test &&
5398     check_ldflags -Wl,--wrap,avcodec_open2              \
5399                   -Wl,--wrap,avcodec_decode_audio4      \
5400                   -Wl,--wrap,avcodec_decode_video2      \
5401                   -Wl,--wrap,avcodec_decode_subtitle2   \
5402                   -Wl,--wrap,avcodec_encode_audio2      \
5403                   -Wl,--wrap,avcodec_encode_video       \
5404                   -Wl,--wrap,avcodec_encode_video2      \
5405                   -Wl,--wrap,avcodec_encode_subtitle    \
5406                   -Wl,--wrap,swr_convert                \
5407                   -Wl,--wrap,avresample_convert         \
5408                   -Wl,--wrap,sws_scale ||
5409     disable xmm_clobber_test
5410
5411 echo "X{};" > $TMPV
5412 if test_ldflags -Wl,--version-script,$TMPV; then
5413     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5414     check_cc <<EOF && enable symver_asm_label
5415 void ff_foo(void) __asm__ ("av_foo@VERSION");
5416 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5417 EOF
5418     check_cc <<EOF && enable symver_gnu_asm
5419 __asm__(".symver ff_foo,av_foo@VERSION");
5420 void ff_foo(void) {}
5421 EOF
5422 fi
5423
5424 if [ -z "$optflags" ]; then
5425     if enabled small; then
5426         optflags=$cflags_size
5427     elif enabled optimizations; then
5428         optflags=$cflags_speed
5429     else
5430         optflags=$cflags_noopt
5431     fi
5432 fi
5433
5434 check_optflags(){
5435     check_cflags "$@"
5436     enabled lto && check_ldflags "$@"
5437 }
5438
5439
5440 if enabled lto; then
5441     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5442     check_cflags  -flto
5443     check_ldflags -flto $cpuflags
5444     disable inline_asm_direct_symbol_refs
5445 fi
5446
5447 check_optflags $optflags
5448 check_optflags -fno-math-errno
5449 check_optflags -fno-signed-zeros
5450
5451 enabled ftrapv && check_cflags -ftrapv
5452
5453 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5454 int x;
5455 EOF
5456
5457
5458 if enabled icc; then
5459     # Just warnings, no remarks
5460     check_cflags -w1
5461     # -wd: Disable following warnings
5462     # 144, 167, 556: -Wno-pointer-sign
5463     # 188: enumerated type mixed with another type
5464     # 1292: attribute "foo" ignored
5465     # 1419: external declaration in primary source file
5466     # 10006: ignoring unknown option -fno-signed-zeros
5467     # 10148: ignoring unknown option -Wno-parentheses
5468     # 10156: ignoring option '-W'; no argument required
5469     # 13200: No EMMS instruction before call to function
5470     # 13203: No EMMS instruction before return from function
5471     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5472     # 11030: Warning unknown option --as-needed
5473     # 10156: ignoring option '-export'; no argument required
5474     check_ldflags -wd10156,11030
5475     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5476     enable ebp_available
5477     # The test above does not test linking
5478     enabled lto && disable symver_asm_label
5479     if enabled x86_32; then
5480         icc_version=$($cc -dumpversion)
5481         test ${icc_version%%.*} -ge 11 &&
5482             check_cflags -falign-stack=maintain-16-byte ||
5483             disable aligned_stack
5484     fi
5485 elif enabled ccc; then
5486     # disable some annoying warnings
5487     add_cflags -msg_disable bitnotint
5488     add_cflags -msg_disable mixfuncvoid
5489     add_cflags -msg_disable nonstandcast
5490     add_cflags -msg_disable unsupieee
5491 elif enabled gcc; then
5492     check_optflags -fno-tree-vectorize
5493     check_cflags -Werror=format-security
5494     check_cflags -Werror=implicit-function-declaration
5495     check_cflags -Werror=missing-prototypes
5496     check_cflags -Werror=return-type
5497     check_cflags -Werror=vla
5498     check_cflags -Wformat
5499     check_cflags -fdiagnostics-color=auto
5500     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5501 elif enabled llvm_gcc; then
5502     check_cflags -mllvm -stack-alignment=16
5503 elif enabled clang; then
5504     check_cflags -mllvm -stack-alignment=16
5505     check_cflags -Qunused-arguments
5506     check_cflags -Werror=implicit-function-declaration
5507     check_cflags -Werror=missing-prototypes
5508     check_cflags -Werror=return-type
5509 elif enabled cparser; then
5510     add_cflags -Wno-missing-variable-declarations
5511     add_cflags -Wno-empty-statement
5512 elif enabled armcc; then
5513     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5514     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5515     # 2523: use of inline assembly is deprecated
5516     add_cflags -W${armcc_opt},--diag_suppress=2523
5517     add_cflags -W${armcc_opt},--diag_suppress=1207
5518     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5519     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5520     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5521     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5522 elif enabled tms470; then
5523     add_cflags -pds=824 -pds=837
5524     disable inline_asm
5525 elif enabled pathscale; then
5526     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5527 elif enabled_any msvc icl; then
5528     enabled x86_32 && disable aligned_stack
5529     enabled_all x86_32 debug && add_cflags -Oy-
5530     enabled debug && add_ldflags -debug
5531     enable pragma_deprecated
5532     if enabled icl; then
5533         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5534         # (correctly) on icl 13.x.
5535         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5536             add_cflags -Qansi-alias
5537         # Some inline asm is not compilable in debug
5538         if enabled debug; then
5539             disable ebp_available
5540             disable ebx_available
5541         fi
5542     fi
5543     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5544     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5545 fi
5546
5547 case $as_type in
5548     clang)
5549         add_asflags -Qunused-arguments
5550     ;;
5551 esac
5552
5553 case $ld_type in
5554     clang)
5555         check_ldflags -Qunused-arguments
5556     ;;
5557 esac
5558
5559 case $target_os in
5560     osf1)
5561         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5562     ;;
5563     plan9)
5564         add_cppflags -Dmain=plan9_main
5565     ;;
5566 esac
5567
5568 enable frame_thread_encoder
5569
5570 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5571
5572 check_deps $CONFIG_LIST       \
5573            $CONFIG_EXTRA      \
5574            $HAVE_LIST         \
5575            $ALL_COMPONENTS    \
5576
5577 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"
5578
5579
5580 if test $target_os = "haiku"; then
5581     disable memalign
5582     disable posix_memalign
5583 fi
5584
5585 enabled_all d3d11va d3d11_cobj CoTaskMemFree &&
5586     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5587     enable d3d11va_lib
5588
5589 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5590     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5591     enable dxva2_lib
5592
5593 ! enabled_any memalign posix_memalign aligned_malloc &&
5594     enabled simd_align_16 && enable memalign_hack
5595
5596 # add_dep lib dep
5597 # -> enable ${lib}_deps_${dep}
5598 # -> add $dep to ${lib}_deps only once
5599 add_dep() {
5600     lib=$1
5601     dep=$2
5602     enabled "${lib}_deps_${dep}" && return 0
5603     enable  "${lib}_deps_${dep}"
5604     prepend "${lib}_deps" $dep
5605 }
5606
5607 # merge deps lib components
5608 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5609 merge_deps() {
5610     lib=$1
5611     shift
5612     for comp in $*; do
5613         enabled $comp || continue
5614         eval "dep=\"\$${comp}_deps\""
5615         for d in $dep; do
5616             add_dep $lib $d
5617         done
5618     done
5619 }
5620
5621 merge_deps libavfilter $FILTER_LIST
5622
5623 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5624
5625 for thread in $THREADS_LIST; do
5626     if enabled $thread; then
5627         test -n "$thread_type" &&
5628             die "ERROR: Only one thread type must be selected." ||
5629             thread_type="$thread"
5630     fi
5631 done
5632
5633 enabled zlib && add_cppflags -DZLIB_CONST
5634
5635 # conditional library dependencies, in linking order
5636 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5637 enabled aresample_filter    && prepend avfilter_deps "swresample"
5638 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5639 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5640 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5641 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5642 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5643 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5644 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5645 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5646 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5647 enabled pan_filter          && prepend avfilter_deps "swresample"
5648 enabled pp_filter           && prepend avfilter_deps "postproc"
5649 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5650 enabled resample_filter && prepend avfilter_deps "avresample"
5651 enabled sab_filter          && prepend avfilter_deps "swscale"
5652 enabled scale_filter    && prepend avfilter_deps "swscale"
5653 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5654 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5655 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5656 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5657
5658 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5659
5660 enabled opus_decoder    && prepend avcodec_deps "swresample"
5661
5662 expand_deps(){
5663     lib_deps=${1}_deps
5664     eval "deps=\$$lib_deps"
5665     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5666     unique $lib_deps
5667 }
5668
5669 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5670 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5671
5672 map 'expand_deps $v' $LIBRARY_LIST
5673
5674 echo "install prefix            $prefix"
5675 echo "source path               $source_path"
5676 echo "C compiler                $cc"
5677 echo "C library                 $libc_type"
5678 if test "$host_cc" != "$cc"; then
5679     echo "host C compiler           $host_cc"
5680     echo "host C library            $host_libc_type"
5681 fi
5682 echo "ARCH                      $arch ($cpu)"
5683 if test "$build_suffix" != ""; then
5684     echo "build suffix              $build_suffix"
5685 fi
5686 if test "$progs_suffix" != ""; then
5687     echo "progs suffix              $progs_suffix"
5688 fi
5689 if test "$extra_version" != ""; then
5690     echo "version string suffix     $extra_version"
5691 fi
5692 echo "big-endian                ${bigendian-no}"
5693 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5694 if enabled x86; then
5695     echo "${yasmexe}                      ${yasm-no}"
5696     echo "MMX enabled               ${mmx-no}"
5697     echo "MMXEXT enabled            ${mmxext-no}"
5698     echo "3DNow! enabled            ${amd3dnow-no}"
5699     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5700     echo "SSE enabled               ${sse-no}"
5701     echo "SSSE3 enabled             ${ssse3-no}"
5702     echo "AVX enabled               ${avx-no}"
5703     echo "XOP enabled               ${xop-no}"
5704     echo "FMA3 enabled              ${fma3-no}"
5705     echo "FMA4 enabled              ${fma4-no}"
5706     echo "i686 features enabled     ${i686-no}"
5707     echo "CMOV is fast              ${fast_cmov-no}"
5708     echo "EBX available             ${ebx_available-no}"
5709     echo "EBP available             ${ebp_available-no}"
5710 fi
5711 if enabled aarch64; then
5712     echo "NEON enabled              ${neon-no}"
5713     echo "VFP enabled               ${vfp-no}"
5714 fi
5715 if enabled arm; then
5716     echo "ARMv5TE enabled           ${armv5te-no}"
5717     echo "ARMv6 enabled             ${armv6-no}"
5718     echo "ARMv6T2 enabled           ${armv6t2-no}"
5719     echo "VFP enabled               ${vfp-no}"
5720     echo "NEON enabled              ${neon-no}"
5721     echo "THUMB enabled             ${thumb-no}"
5722 fi
5723 if enabled mips; then
5724     echo "MIPS FPU enabled          ${mipsfpu-no}"
5725     echo "MIPS32R5 enabled          ${mips32r5-no}"
5726     echo "MIPS64R6 enabled          ${mips64r6-no}"
5727     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5728     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5729     echo "MIPS MSA enabled          ${msa-no}"
5730     echo "LOONGSON3 enabled         ${loongson3-no}"
5731 fi
5732 if enabled ppc; then
5733     echo "AltiVec enabled           ${altivec-no}"
5734     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5735     echo "PPC VSX optimizations     ${vsx-no}"
5736     echo "dcbzl available           ${dcbzl-no}"
5737 fi
5738 echo "debug symbols             ${debug-no}"
5739 echo "strip symbols             ${stripping-no}"
5740 echo "optimize for size         ${small-no}"
5741 echo "optimizations             ${optimizations-no}"
5742 echo "static                    ${static-no}"
5743 echo "shared                    ${shared-no}"
5744 echo "postprocessing support    ${postproc-no}"
5745 echo "new filter support        ${avfilter-no}"
5746 echo "network support           ${network-no}"
5747 echo "threading support         ${thread_type-no}"
5748 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5749 echo "SDL support               ${sdl-no}"
5750 echo "opencl enabled            ${opencl-no}"
5751 echo "texi2html enabled         ${texi2html-no}"
5752 echo "perl enabled              ${perl-no}"
5753 echo "pod2man enabled           ${pod2man-no}"
5754 echo "makeinfo enabled          ${makeinfo-no}"
5755 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5756 test -n "$random_seed" &&
5757     echo "random seed               ${random_seed}"
5758 echo
5759
5760 echo "External libraries:"
5761 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5762 echo
5763
5764 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5765     echo "Enabled ${type}s:"
5766     eval list=\$$(toupper $type)_LIST
5767     print_enabled '_*' $list | print_3_columns
5768     echo
5769 done
5770
5771 license="LGPL version 2.1 or later"
5772 if enabled nonfree; then
5773     license="nonfree and unredistributable"
5774 elif enabled gplv3; then
5775     license="GPL version 3 or later"
5776 elif enabled lgplv3; then
5777     license="LGPL version 3 or later"
5778 elif enabled gpl; then
5779     license="GPL version 2 or later"
5780 fi
5781
5782 echo "License: $license"
5783
5784 echo "Creating config.mak, config.h, and doc/config.texi..."
5785
5786 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5787
5788 enabled stripping || strip="echo skipping strip"
5789
5790 config_files="$TMPH config.mak doc/config.texi"
5791
5792 cat > config.mak <<EOF
5793 # Automatically generated by configure - do not modify!
5794 ifndef FFMPEG_CONFIG_MAK
5795 FFMPEG_CONFIG_MAK=1
5796 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5797 prefix=$prefix
5798 LIBDIR=\$(DESTDIR)$libdir
5799 SHLIBDIR=\$(DESTDIR)$shlibdir
5800 INCDIR=\$(DESTDIR)$incdir
5801 BINDIR=\$(DESTDIR)$bindir
5802 DATADIR=\$(DESTDIR)$datadir
5803 DOCDIR=\$(DESTDIR)$docdir
5804 MANDIR=\$(DESTDIR)$mandir
5805 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5806 SRC_PATH=$source_path
5807 ifndef MAIN_MAKEFILE
5808 SRC_PATH:=\$(SRC_PATH:.%=..%)
5809 endif
5810 CC_IDENT=$cc_ident
5811 ARCH=$arch
5812 INTRINSICS=$intrinsics
5813 CC=$cc
5814 CXX=$cxx
5815 AS=$as
5816 LD=$ld
5817 DEPCC=$dep_cc
5818 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5819 DEPAS=$as
5820 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5821 YASM=$yasmexe
5822 DEPYASM=$yasmexe
5823 AR=$ar
5824 ARFLAGS=$arflags
5825 AR_O=$ar_o
5826 RANLIB=$ranlib
5827 STRIP=$strip
5828 CP=cp -p
5829 LN_S=$ln_s
5830 CPPFLAGS=$CPPFLAGS
5831 CFLAGS=$CFLAGS
5832 CXXFLAGS=$CXXFLAGS
5833 ASFLAGS=$ASFLAGS
5834 AS_C=$AS_C
5835 AS_O=$AS_O
5836 CC_C=$CC_C
5837 CC_E=$CC_E
5838 CC_O=$CC_O
5839 CXX_C=$CXX_C
5840 CXX_O=$CXX_O
5841 LD_O=$LD_O
5842 LD_LIB=$LD_LIB
5843 LD_PATH=$LD_PATH
5844 DLLTOOL=$dlltool
5845 WINDRES=$windres
5846 DEPWINDRES=$dep_cc
5847 DOXYGEN=$doxygen
5848 LDFLAGS=$LDFLAGS
5849 LDEXEFLAGS=$LDEXEFLAGS
5850 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5851 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5852 YASMFLAGS=$YASMFLAGS
5853 BUILDSUF=$build_suffix
5854 PROGSSUF=$progs_suffix
5855 FULLNAME=$FULLNAME
5856 LIBPREF=$LIBPREF
5857 LIBSUF=$LIBSUF
5858 LIBNAME=$LIBNAME
5859 SLIBPREF=$SLIBPREF
5860 SLIBSUF=$SLIBSUF
5861 EXESUF=$EXESUF
5862 EXTRA_VERSION=$extra_version
5863 CCDEP=$CCDEP
5864 CXXDEP=$CXXDEP
5865 CCDEP_FLAGS=$CCDEP_FLAGS
5866 ASDEP=$ASDEP
5867 ASDEP_FLAGS=$ASDEP_FLAGS
5868 CC_DEPFLAGS=$CC_DEPFLAGS
5869 AS_DEPFLAGS=$AS_DEPFLAGS
5870 HOSTCC=$host_cc
5871 HOSTLD=$host_ld
5872 HOSTCFLAGS=$host_cflags
5873 HOSTCPPFLAGS=$host_cppflags
5874 HOSTEXESUF=$HOSTEXESUF
5875 HOSTLDFLAGS=$host_ldflags
5876 HOSTLIBS=$host_libs
5877 DEPHOSTCC=$host_cc
5878 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5879 HOSTCCDEP=$HOSTCCDEP
5880 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5881 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5882 HOSTCC_C=$HOSTCC_C
5883 HOSTCC_O=$HOSTCC_O
5884 HOSTLD_O=$HOSTLD_O
5885 TARGET_EXEC=$target_exec $target_exec_args
5886 TARGET_PATH=$target_path
5887 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5888 CFLAGS-ffplay=$sdl_cflags
5889 ZLIB=$($ldflags_filter -lz)
5890 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5891 EXTRALIBS=$extralibs
5892 COMPAT_OBJS=$compat_objs
5893 EXEOBJS=$exeobjs
5894 INSTALL=$install
5895 LIBTARGET=${LIBTARGET}
5896 SLIBNAME=${SLIBNAME}
5897 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5898 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5899 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5900 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5901 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5902 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5903 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5904 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5905 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5906 NOREDZONE_FLAGS=$noredzone_flags
5907 EOF
5908
5909 get_version(){
5910     lcname=lib${1}
5911     name=$(toupper $lcname)
5912     file=$source_path/$lcname/version.h
5913     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5914     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5915     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5916     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5917     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5918     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5919 }
5920
5921 map 'get_version $v' $LIBRARY_LIST
5922
5923 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5924
5925 print_program_libs(){
5926     eval "program_libs=\$${1}_libs"
5927     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5928 }
5929
5930 map 'print_program_libs $v' $PROGRAM_LIST
5931
5932 cat > $TMPH <<EOF
5933 /* Automatically generated by configure - do not modify! */
5934 #ifndef FFMPEG_CONFIG_H
5935 #define FFMPEG_CONFIG_H
5936 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5937 #define FFMPEG_LICENSE "$(c_escape $license)"
5938 #define CONFIG_THIS_YEAR 2015
5939 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5940 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5941 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5942 #define av_restrict $_restrict
5943 #define EXTERN_PREFIX "${extern_prefix}"
5944 #define EXTERN_ASM ${extern_prefix}
5945 #define BUILDSUF "$build_suffix"
5946 #define SLIBSUF "$SLIBSUF"
5947 #define HAVE_MMX2 HAVE_MMXEXT
5948 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5949 EOF
5950
5951 test -n "$assert_level" &&
5952     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5953
5954 test -n "$malloc_prefix" &&
5955     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5956
5957 if enabled yasm; then
5958     append config_files $TMPASM
5959     printf '' >$TMPASM
5960 fi
5961
5962 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5963
5964
5965 mkdir -p doc
5966 mkdir -p tests
5967 echo "@c auto-generated by configure" > doc/config.texi
5968
5969 print_config ARCH_   "$config_files" $ARCH_LIST
5970 print_config HAVE_   "$config_files" $HAVE_LIST
5971 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5972                                      $CONFIG_EXTRA      \
5973                                      $ALL_COMPONENTS    \
5974
5975 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5976 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5977
5978 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5979 cp_if_changed $TMPH config.h
5980 touch .config
5981
5982 enabled yasm && cp_if_changed $TMPASM config.asm
5983
5984 cat > $TMPH <<EOF
5985 /* Generated by ffconf */
5986 #ifndef AVUTIL_AVCONFIG_H
5987 #define AVUTIL_AVCONFIG_H
5988 EOF
5989
5990 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5991
5992 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5993
5994 cp_if_changed $TMPH libavutil/avconfig.h
5995
5996 if test -n "$WARNINGS"; then
5997     printf "\n$WARNINGS"
5998     enabled fatal_warnings && exit 1
5999 fi
6000
6001 # build pkg-config files
6002
6003 lib_version(){
6004     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6005 }
6006
6007 pkgconfig_generate(){
6008     name=$1
6009     shortname=${name#lib}${build_suffix}
6010     comment=$2
6011     version=$3
6012     libs=$4
6013     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6014     requires=${requires%, }
6015     enabled ${name#lib} || return 0
6016     mkdir -p $name
6017     cat <<EOF > $name/$name${build_suffix}.pc
6018 prefix=$prefix
6019 exec_prefix=\${prefix}
6020 libdir=$libdir
6021 includedir=$incdir
6022
6023 Name: $name
6024 Description: $comment
6025 Version: $version
6026 Requires: $(enabled shared || echo $requires)
6027 Requires.private: $(enabled shared && echo $requires)
6028 Conflicts:
6029 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6030 Libs.private: $(enabled shared && echo $libs)
6031 Cflags: -I\${includedir}
6032 EOF
6033
6034 mkdir -p doc/examples/pc-uninstalled
6035 includedir=${source_path}
6036 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6037     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6038 prefix=
6039 exec_prefix=
6040 libdir=\${pcfiledir}/../../../$name
6041 includedir=${includedir}
6042
6043 Name: $name
6044 Description: $comment
6045 Version: $version
6046 Requires: $requires
6047 Conflicts:
6048 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6049 Cflags: -I\${includedir}
6050 EOF
6051 }
6052
6053 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6054 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6055 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6056 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6057 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6058 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6059 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6060 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6061 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"