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-libkvazaar      enable HEVC encoding via libkvazaar [no]
 226   --enable-libmfx          enable HW acceleration through libmfx
 227   --enable-libmodplug      enable ModPlug via libmodplug [no]
 228   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 229   --enable-libnut          enable NUT (de)muxing via libnut,
 230                            native (de)muxer exists [no]
 231   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 232   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 233   --enable-libopencv       enable video filtering via libopencv [no]
 234   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 235   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 236   --enable-libopus         enable Opus de/encoding via libopus [no]
 237   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 238   --enable-libquvi         enable quvi input via libquvi [no]
 239   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 240   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 241   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 242   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 243   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 244   --enable-libsoxr         enable Include libsoxr resampling [no]
 245   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 246   --enable-libssh          enable SFTP protocol via libssh [no]
 247   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 248   --enable-libtheora       enable Theora encoding via libtheora [no]
 249   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 250   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 251   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 252   --enable-libvidstab      enable video stabilization using vid.stab [no]
 253   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 254   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 255   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 256                            native implementation exists [no]
 257   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 258   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 259   --enable-libwebp         enable WebP encoding via libwebp [no]
 260   --enable-libx264         enable H.264 encoding via x264 [no]
 261   --enable-libx265         enable HEVC encoding via x265 [no]
 262   --enable-libxavs         enable AVS encoding via xavs [no]
 263   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 264   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 265   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 266   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 267   --enable-libxvid         enable Xvid encoding via xvidcore,
 268                            native MPEG-4/Xvid encoder exists [no]
 269   --enable-libzmq          enable message passing via libzmq [no]
 270   --enable-libzvbi         enable teletext support via libzvbi [no]
 271   --disable-lzma           disable lzma [autodetect]
 272   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 273   --enable-mmal            enable decoding via MMAL [no]
 274   --enable-nvenc           enable NVIDIA NVENC support [no]
 275   --enable-openal          enable OpenAL 1.1 capture support [no]
 276   --enable-opencl          enable OpenCL code
 277   --enable-opengl          enable OpenGL rendering [no]
 278   --enable-openssl         enable openssl, needed for https support
 279                            if gnutls is not used [no]
 280   --disable-sdl            disable sdl [autodetect]
 281   --disable-securetransport disable Secure Transport, needed for TLS support
 282                            on OSX if openssl and gnutls are not used [autodetect]
 283   --enable-x11grab         enable X11 grabbing (legacy) [no]
 284   --disable-xlib           disable xlib [autodetect]
 285   --disable-zlib           disable zlib [autodetect]
 286
 287 Toolchain options:
 288   --arch=ARCH              select architecture [$arch]
 289   --cpu=CPU                select the minimum required CPU (affects
 290                            instruction selection, may crash on older CPUs)
 291   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 292   --progs-suffix=SUFFIX    program name suffix []
 293   --enable-cross-compile   assume a cross-compiler is used
 294   --sysroot=PATH           root of cross-build tree
 295   --sysinclude=PATH        location of cross-build system headers
 296   --target-os=OS           compiler targets OS [$target_os]
 297   --target-exec=CMD        command to run executables on target
 298   --target-path=DIR        path to view of build directory on target
 299   --target-samples=DIR     path to samples directory on target
 300   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 301   --toolchain=NAME         set tool defaults according to NAME
 302   --nm=NM                  use nm tool NM [$nm_default]
 303   --ar=AR                  use archive tool AR [$ar_default]
 304   --as=AS                  use assembler AS [$as_default]
 305   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 306   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 307   --cc=CC                  use C compiler CC [$cc_default]
 308   --cxx=CXX                use C compiler CXX [$cxx_default]
 309   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 310   --ld=LD                  use linker LD [$ld_default]
 311   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 312   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 313   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 314   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 315   --host-cc=HOSTCC         use host C compiler HOSTCC
 316   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 317   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 318   --host-ld=HOSTLD         use host linker HOSTLD
 319   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 320   --host-libs=HLIBS        use libs HLIBS when linking for host
 321   --host-os=OS             compiler host OS [$target_os]
 322   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 323   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 324   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 325   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 326   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 327   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 328   --extra-version=STRING   version string suffix []
 329   --optflags=OPTFLAGS      override optimization-related compiler flags
 330   --build-suffix=SUFFIX    library name suffix []
 331   --enable-pic             build position-independent code
 332   --enable-thumb           compile for Thumb instruction set
 333   --enable-lto             use link-time optimization
 334   --env="ENV=override"     override the environment variables
 335
 336 Advanced options (experts only):
 337   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 338   --disable-symver         disable symbol versioning
 339   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 340   --disable-safe-bitstream-reader
 341                            disable buffer boundary checking in bitreaders
 342                            (faster, but may crash)
 343   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 344   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 345
 346 Optimization options (experts only):
 347   --disable-asm            disable all assembly optimizations
 348   --disable-altivec        disable AltiVec optimizations
 349   --disable-vsx            disable VSX optimizations
 350   --disable-power8         disable POWER8 optimizations
 351   --disable-amd3dnow       disable 3DNow! optimizations
 352   --disable-amd3dnowext    disable 3DNow! extended optimizations
 353   --disable-mmx            disable MMX optimizations
 354   --disable-mmxext         disable MMXEXT optimizations
 355   --disable-sse            disable SSE optimizations
 356   --disable-sse2           disable SSE2 optimizations
 357   --disable-sse3           disable SSE3 optimizations
 358   --disable-ssse3          disable SSSE3 optimizations
 359   --disable-sse4           disable SSE4 optimizations
 360   --disable-sse42          disable SSE4.2 optimizations
 361   --disable-avx            disable AVX optimizations
 362   --disable-xop            disable XOP optimizations
 363   --disable-fma3           disable FMA3 optimizations
 364   --disable-fma4           disable FMA4 optimizations
 365   --disable-avx2           disable AVX2 optimizations
 366   --disable-armv5te        disable armv5te optimizations
 367   --disable-armv6          disable armv6 optimizations
 368   --disable-armv6t2        disable armv6t2 optimizations
 369   --disable-vfp            disable VFP optimizations
 370   --disable-neon           disable NEON optimizations
 371   --disable-inline-asm     disable use of inline assembly
 372   --disable-yasm           disable use of nasm/yasm assembly
 373   --disable-mips32r5       disable MIPS32R5 optimizations
 374   --disable-mips64r6       disable MIPS64R6 optimizations
 375   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 376   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 377   --disable-msa            disable MSA optimizations
 378   --disable-mipsfpu        disable floating point MIPS optimizations
 379   --disable-mmi            disable Loongson SIMD optimizations
 380   --disable-fast-unaligned consider unaligned accesses slow
 381
 382 Developer options (useful when working on FFmpeg itself):
 383   --disable-debug          disable debugging symbols
 384   --enable-debug=LEVEL     set the debug level [$debuglevel]
 385   --disable-optimizations  disable compiler optimizations
 386   --enable-extra-warnings  enable more compiler warnings
 387   --disable-stripping      disable stripping of executables and shared libraries
 388   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 389                            2 causes a slowdown at runtime.
 390   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 391   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 392                            leaks and errors, using the specified valgrind binary.
 393                            Cannot be combined with --target-exec
 394   --enable-ftrapv          Trap arithmetic overflows
 395   --samples=PATH           location of test samples for FATE, if not set use
 396                            \$FATE_SAMPLES at make invocation time.
 397   --enable-neon-clobber-test check NEON registers for clobbering (should be
 398                            used only for debugging purposes)
 399   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 400                            should be used only for debugging purposes)
 401   --enable-random          randomly enable/disable components
 402   --disable-random
 403   --enable-random=LIST     randomly enable/disable specific components or
 404   --disable-random=LIST    component groups. LIST is a comma-separated list
 405                            of NAME[:PROB] entries where NAME is a component
 406                            (group) and PROB the probability associated with
 407                            NAME (default 0.5).
 408   --random-seed=VALUE      seed value for --enable/disable-random
 409   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 410                            (only applies to --disable-optimizations builds)
 411
 412 NOTE: Object files are built at the place where configure is launched.
 413 EOF
 414   exit 0
 415 }
 416
 417 quotes='""'
 418
 419 log(){
 420     echo "$@" >> $logfile
 421 }
 422
 423 log_file(){
 424     log BEGIN $1
 425     pr -n -t $1 >> $logfile
 426     log END $1
 427 }
 428
 429 echolog(){
 430     log "$@"
 431     echo "$@"
 432 }
 433
 434 warn(){
 435     log "WARNING: $*"
 436     WARNINGS="${WARNINGS}WARNING: $*\n"
 437 }
 438
 439 die(){
 440     echolog "$@"
 441     cat <<EOF
 442
 443 If you think configure made a mistake, make sure you are using the latest
 444 version from Git.  If the latest version fails, report the problem to the
 445 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 446 EOF
 447     if disabled logging; then
 448         cat <<EOF
 449 Rerun configure with logging enabled (do not use --disable-logging), and
 450 include the log this produces with your report.
 451 EOF
 452     else
 453         cat <<EOF
 454 Include the log file "$logfile" produced by configure as this will help
 455 solve the problem.
 456 EOF
 457     fi
 458     exit 1
 459 }
 460
 461 # Avoid locale weirdness, besides we really just want to translate ASCII.
 462 toupper(){
 463     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 464 }
 465
 466 tolower(){
 467     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 468 }
 469
 470 c_escape(){
 471     echo "$*" | sed 's/["\\]/\\\0/g'
 472 }
 473
 474 sh_quote(){
 475     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 476     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 477     echo "$v"
 478 }
 479
 480 cleanws(){
 481     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 482 }
 483
 484 filter(){
 485     pat=$1
 486     shift
 487     for v; do
 488         eval "case $v in $pat) echo $v ;; esac"
 489     done
 490 }
 491
 492 filter_out(){
 493     pat=$1
 494     shift
 495     for v; do
 496         eval "case $v in $pat) ;; *) echo $v ;; esac"
 497     done
 498 }
 499
 500 map(){
 501     m=$1
 502     shift
 503     for v; do eval $m; done
 504 }
 505
 506 add_suffix(){
 507     suffix=$1
 508     shift
 509     for v; do echo ${v}${suffix}; done
 510 }
 511
 512 set_all(){
 513     value=$1
 514     shift
 515     for var in $*; do
 516         eval $var=$value
 517     done
 518 }
 519
 520 set_weak(){
 521     value=$1
 522     shift
 523     for var; do
 524         eval : \${$var:=$value}
 525     done
 526 }
 527
 528 sanitize_var_name(){
 529     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 530 }
 531
 532 set_safe(){
 533     var=$1
 534     shift
 535     eval $(sanitize_var_name "$var")='$*'
 536 }
 537
 538 get_safe(){
 539     eval echo \$$(sanitize_var_name "$1")
 540 }
 541
 542 pushvar(){
 543     for pvar in $*; do
 544         eval level=\${${pvar}_level:=0}
 545         eval ${pvar}_${level}="\$$pvar"
 546         eval ${pvar}_level=$(($level+1))
 547     done
 548 }
 549
 550 popvar(){
 551     for pvar in $*; do
 552         eval level=\${${pvar}_level:-0}
 553         test $level = 0 && continue
 554         eval level=$(($level-1))
 555         eval $pvar="\${${pvar}_${level}}"
 556         eval ${pvar}_level=$level
 557         eval unset ${pvar}_${level}
 558     done
 559 }
 560
 561 enable(){
 562     set_all yes $*
 563 }
 564
 565 disable(){
 566     set_all no $*
 567 }
 568
 569 enable_weak(){
 570     set_weak yes $*
 571 }
 572
 573 disable_weak(){
 574     set_weak no $*
 575 }
 576
 577 enable_safe(){
 578     for var; do
 579         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 580     done
 581 }
 582
 583 disable_safe(){
 584     for var; do
 585         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 586     done
 587 }
 588
 589 do_enable_deep(){
 590     for var; do
 591         enabled $var && continue
 592         eval sel="\$${var}_select"
 593         eval sgs="\$${var}_suggest"
 594         pushvar var sgs
 595         enable_deep $sel
 596         popvar sgs
 597         enable_deep_weak $sgs
 598         popvar var
 599     done
 600 }
 601
 602 enable_deep(){
 603     do_enable_deep $*
 604     enable $*
 605 }
 606
 607 enable_deep_weak(){
 608     for var; do
 609         disabled $var && continue
 610         pushvar var
 611         do_enable_deep $var
 612         popvar var
 613         enable_weak $var
 614     done
 615 }
 616
 617 enabled(){
 618     test "${1#!}" = "$1" && op== || op=!=
 619     eval test "x\$${1#!}" $op "xyes"
 620 }
 621
 622 disabled(){
 623     test "${1#!}" = "$1" && op== || op=!=
 624     eval test "x\$${1#!}" $op "xno"
 625 }
 626
 627 enabled_all(){
 628     for opt; do
 629         enabled $opt || return 1
 630     done
 631 }
 632
 633 disabled_all(){
 634     for opt; do
 635         disabled $opt || return 1
 636     done
 637 }
 638
 639 enabled_any(){
 640     for opt; do
 641         enabled $opt && return 0
 642     done
 643 }
 644
 645 disabled_any(){
 646     for opt; do
 647         disabled $opt && return 0
 648     done
 649     return 1
 650 }
 651
 652 set_default(){
 653     for opt; do
 654         eval : \${$opt:=\$${opt}_default}
 655     done
 656 }
 657
 658 is_in(){
 659     value=$1
 660     shift
 661     for var in $*; do
 662         [ $var = $value ] && return 0
 663     done
 664     return 1
 665 }
 666
 667 do_check_deps(){
 668     for cfg; do
 669         cfg="${cfg#!}"
 670         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 671         disabled ${cfg}_checking && continue
 672         enable ${cfg}_checking
 673         append allopts $cfg
 674
 675         eval dep_all="\$${cfg}_deps"
 676         eval dep_any="\$${cfg}_deps_any"
 677         eval dep_sel="\$${cfg}_select"
 678         eval dep_sgs="\$${cfg}_suggest"
 679         eval dep_ifa="\$${cfg}_if"
 680         eval dep_ifn="\$${cfg}_if_any"
 681
 682         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 683         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 684         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 685
 686         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 687         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 688         enabled_all  $dep_all || disable $cfg
 689         enabled_any  $dep_any || disable $cfg
 690         disabled_any $dep_sel && disable $cfg
 691
 692         if enabled $cfg; then
 693             enable_deep $dep_sel
 694             enable_deep_weak $dep_sgs
 695         fi
 696
 697         disable ${cfg}_checking
 698     done
 699 }
 700
 701 check_deps(){
 702     unset allopts
 703
 704     do_check_deps "$@"
 705
 706     for cfg in $allopts; do
 707         enabled $cfg || continue
 708         eval dep_extralibs="\$${cfg}_extralibs"
 709         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 710     done
 711 }
 712
 713 print_config(){
 714     pfx=$1
 715     files=$2
 716     shift 2
 717     map 'eval echo "$v \${$v:-no}"' "$@" |
 718     awk "BEGIN { split(\"$files\", files) }
 719         {
 720             c = \"$pfx\" toupper(\$1);
 721             v = \$2;
 722             sub(/yes/, 1, v);
 723             sub(/no/,  0, v);
 724             for (f in files) {
 725                 file = files[f];
 726                 if (file ~ /\\.h\$/) {
 727                     printf(\"#define %s %d\\n\", c, v) >>file;
 728                 } else if (file ~ /\\.asm\$/) {
 729                     printf(\"%%define %s %d\\n\", c, v) >>file;
 730                 } else if (file ~ /\\.mak\$/) {
 731                     n = -v ? \"\" : \"!\";
 732                     printf(\"%s%s=yes\\n\", n, c) >>file;
 733                 } else if (file ~ /\\.texi\$/) {
 734                     pre = -v ? \"\" : \"@c \";
 735                     yesno = \$2;
 736                     c2 = tolower(c);
 737                     gsub(/_/, \"-\", c2);
 738                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 739                 }
 740             }
 741         }"
 742 }
 743
 744 print_enabled(){
 745     suf=$1
 746     shift
 747     for v; do
 748         enabled $v && printf "%s\n" ${v%$suf};
 749     done
 750 }
 751
 752 append(){
 753     var=$1
 754     shift
 755     eval "$var=\"\$$var $*\""
 756 }
 757
 758 prepend(){
 759     var=$1
 760     shift
 761     eval "$var=\"$* \$$var\""
 762 }
 763
 764 unique(){
 765     var=$1
 766     uniq_list=""
 767     for tok in $(eval echo \$$var); do
 768         uniq_list="$(filter_out $tok $uniq_list) $tok"
 769     done
 770     eval "$var=\"${uniq_list}\""
 771 }
 772
 773 add_cppflags(){
 774     append CPPFLAGS "$@"
 775 }
 776
 777 add_cflags(){
 778     append CFLAGS $($cflags_filter "$@")
 779 }
 780
 781 add_cxxflags(){
 782     append CXXFLAGS $($cflags_filter "$@")
 783 }
 784
 785 add_asflags(){
 786     append ASFLAGS $($asflags_filter "$@")
 787 }
 788
 789 add_ldflags(){
 790     append LDFLAGS $($ldflags_filter "$@")
 791 }
 792
 793 add_ldexeflags(){
 794     append LDEXEFLAGS $($ldflags_filter "$@")
 795 }
 796
 797 add_ldlibflags(){
 798     append LDLIBFLAGS $($ldflags_filter "$@")
 799 }
 800
 801 add_stripflags(){
 802     append ASMSTRIPFLAGS "$@"
 803 }
 804
 805 add_extralibs(){
 806     prepend extralibs $($ldflags_filter "$@")
 807 }
 808
 809 add_host_cppflags(){
 810     append host_cppflags "$@"
 811 }
 812
 813 add_host_cflags(){
 814     append host_cflags $($host_cflags_filter "$@")
 815 }
 816
 817 add_host_ldflags(){
 818     append host_ldflags $($host_ldflags_filter "$@")
 819 }
 820
 821 add_compat(){
 822     append compat_objs $1
 823     shift
 824     map 'add_cppflags -D$v' "$@"
 825 }
 826
 827 check_cmd(){
 828     log "$@"
 829     "$@" >> $logfile 2>&1
 830 }
 831
 832 check_stat(){
 833     log check_stat "$@"
 834     stat "$1" >> $logfile 2>&1
 835 }
 836
 837 cc_o(){
 838     eval printf '%s\\n' $CC_O
 839 }
 840
 841 cc_e(){
 842     eval printf '%s\\n' $CC_E
 843 }
 844
 845 check_cc(){
 846     log check_cc "$@"
 847     cat > $TMPC
 848     log_file $TMPC
 849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 850 }
 851
 852 check_cxx(){
 853     log check_cxx "$@"
 854     cat > $TMPCPP
 855     log_file $TMPCPP
 856     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 857 }
 858
 859 check_oc(){
 860     log check_oc "$@"
 861     cat > $TMPM
 862     log_file $TMPM
 863     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 864 }
 865
 866 check_cpp(){
 867     log check_cpp "$@"
 868     cat > $TMPC
 869     log_file $TMPC
 870     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 871 }
 872
 873 as_o(){
 874     eval printf '%s\\n' $AS_O
 875 }
 876
 877 check_as(){
 878     log check_as "$@"
 879     cat > $TMPS
 880     log_file $TMPS
 881     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 882 }
 883
 884 check_inline_asm(){
 885     log check_inline_asm "$@"
 886     name="$1"
 887     code="$2"
 888     shift 2
 889     disable $name
 890     check_cc "$@" <<EOF && enable $name
 891 void foo(void){ __asm__ volatile($code); }
 892 EOF
 893 }
 894
 895 check_insn(){
 896     log check_insn "$@"
 897     check_inline_asm ${1}_inline "\"$2\""
 898     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 899 }
 900
 901 check_yasm(){
 902     log check_yasm "$@"
 903     echo "$1" > $TMPS
 904     log_file $TMPS
 905     shift 1
 906     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 907 }
 908
 909 ld_o(){
 910     eval printf '%s\\n' $LD_O
 911 }
 912
 913 check_ld(){
 914     log check_ld "$@"
 915     type=$1
 916     shift 1
 917     flags=$(filter_out '-l*|*.so' $@)
 918     libs=$(filter '-l*|*.so' $@)
 919     check_$type $($cflags_filter $flags) || return
 920     flags=$($ldflags_filter $flags)
 921     libs=$($ldflags_filter $libs)
 922     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 923 }
 924
 925 print_include(){
 926     hdr=$1
 927     test "${hdr%.h}" = "${hdr}" &&
 928         echo "#include $hdr"    ||
 929         echo "#include <$hdr>"
 930 }
 931
 932 check_code(){
 933     log check_code "$@"
 934     check=$1
 935     headers=$2
 936     code=$3
 937     shift 3
 938     {
 939         for hdr in $headers; do
 940             print_include $hdr
 941         done
 942         echo "int main(void) { $code; return 0; }"
 943     } | check_$check "$@"
 944 }
 945
 946 check_cppflags(){
 947     log check_cppflags "$@"
 948     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 949 int x;
 950 EOF
 951 }
 952
 953 test_cflags(){
 954     log test_cflags "$@"
 955     set -- $($cflags_filter "$@")
 956     check_cc "$@" <<EOF
 957 int x;
 958 EOF
 959 }
 960
 961 check_cflags(){
 962     log check_cflags "$@"
 963     test_cflags "$@" && add_cflags "$@"
 964 }
 965
 966 check_cxxflags(){
 967     log check_cxxflags "$@"
 968     set -- $($cflags_filter "$@")
 969     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 970 int x;
 971 EOF
 972 }
 973
 974 test_ldflags(){
 975     log test_ldflags "$@"
 976     check_ld "cc" "$@" <<EOF
 977 int main(void){ return 0; }
 978 EOF
 979 }
 980
 981 check_ldflags(){
 982     log check_ldflags "$@"
 983     test_ldflags "$@" && add_ldflags "$@"
 984 }
 985
 986 test_stripflags(){
 987     log test_stripflags "$@"
 988     # call check_cc to get a fresh TMPO
 989     check_cc <<EOF
 990 int main(void) { return 0; }
 991 EOF
 992     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 993 }
 994
 995 check_stripflags(){
 996     log check_stripflags "$@"
 997     test_stripflags "$@" && add_stripflags "$@"
 998 }
 999
1000 check_header(){
1001     log check_header "$@"
1002     header=$1
1003     shift
1004     disable_safe $header
1005     check_cpp "$@" <<EOF && enable_safe $header
1006 #include <$header>
1007 int x;
1008 EOF
1009 }
1010
1011 check_header_oc(){
1012     log check_header_oc "$@"
1013     rm -f -- "$TMPO"
1014     header=$1
1015     shift
1016     disable_safe $header
1017     {
1018        echo "#include <$header>"
1019        echo "int main(void) { return 0; }"
1020     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1021 }
1022
1023 check_func(){
1024     log check_func "$@"
1025     func=$1
1026     shift
1027     disable $func
1028     check_ld "cc" "$@" <<EOF && enable $func
1029 extern int $func();
1030 int main(void){ $func(); }
1031 EOF
1032 }
1033
1034 check_mathfunc(){
1035     log check_mathfunc "$@"
1036     func=$1
1037     narg=$2
1038     shift 2
1039     test $narg = 2 && args="f, g" || args="f"
1040     disable $func
1041     check_ld "cc" "$@" <<EOF && enable $func
1042 #include <math.h>
1043 float foo(float f, float g) { return $func($args); }
1044 int main(void){ return (int) foo; }
1045 EOF
1046 }
1047
1048 check_func_headers(){
1049     log check_func_headers "$@"
1050     headers=$1
1051     funcs=$2
1052     shift 2
1053     {
1054         for hdr in $headers; do
1055             print_include $hdr
1056         done
1057         for func in $funcs; do
1058             echo "long check_$func(void) { return (long) $func; }"
1059         done
1060         echo "int main(void) { return 0; }"
1061     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1062 }
1063
1064 check_class_headers_cpp(){
1065     log check_class_headers_cpp "$@"
1066     headers=$1
1067     classes=$2
1068     shift 2
1069     {
1070         for hdr in $headers; do
1071             echo "#include <$hdr>"
1072         done
1073         echo "int main(void) { "
1074         i=1
1075         for class in $classes; do
1076             echo "$class obj$i;"
1077             i=$(expr $i + 1)
1078         done
1079         echo "return 0; }"
1080     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1081 }
1082
1083 check_cpp_condition(){
1084     log check_cpp_condition "$@"
1085     header=$1
1086     condition=$2
1087     shift 2
1088     check_cpp "$@" <<EOF
1089 #include <$header>
1090 #if !($condition)
1091 #error "unsatisfied condition: $condition"
1092 #endif
1093 EOF
1094 }
1095
1096 check_lib(){
1097     log check_lib "$@"
1098     header="$1"
1099     func="$2"
1100     shift 2
1101     check_header $header && check_func $func "$@" && add_extralibs "$@"
1102 }
1103
1104 check_lib2(){
1105     log check_lib2 "$@"
1106     headers="$1"
1107     funcs="$2"
1108     shift 2
1109     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1110 }
1111
1112 check_lib_cpp(){
1113     log check_lib_cpp "$@"
1114     headers="$1"
1115     classes="$2"
1116     shift 2
1117     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1118 }
1119
1120 check_pkg_config(){
1121     log check_pkg_config "$@"
1122     pkgandversion="$1"
1123     pkg="${1%% *}"
1124     headers="$2"
1125     funcs="$3"
1126     shift 3
1127     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1128     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1129     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1130     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1131         set_safe "${pkg}_cflags" $pkg_cflags   &&
1132         set_safe "${pkg}_libs"   $pkg_libs
1133 }
1134
1135 check_exec(){
1136     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1137 }
1138
1139 check_exec_crash(){
1140     code=$(cat)
1141
1142     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1143     # are safe but may not be available everywhere.  Thus we use
1144     # raise(SIGTERM) instead.  The check is run in a subshell so we
1145     # can redirect the "Terminated" message from the shell.  SIGBUS
1146     # is not defined by standard C so it is used conditionally.
1147
1148     (check_exec "$@") >> $logfile 2>&1 <<EOF
1149 #include <signal.h>
1150 static void sighandler(int sig){
1151     raise(SIGTERM);
1152 }
1153 int foo(void){
1154     $code
1155 }
1156 int (*func_ptr)(void) = foo;
1157 int main(void){
1158     signal(SIGILL, sighandler);
1159     signal(SIGFPE, sighandler);
1160     signal(SIGSEGV, sighandler);
1161 #ifdef SIGBUS
1162     signal(SIGBUS, sighandler);
1163 #endif
1164     return func_ptr();
1165 }
1166 EOF
1167 }
1168
1169 check_type(){
1170     log check_type "$@"
1171     headers=$1
1172     type=$2
1173     shift 2
1174     disable_safe "$type"
1175     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1176 }
1177
1178 check_struct(){
1179     log check_struct "$@"
1180     headers=$1
1181     struct=$2
1182     member=$3
1183     shift 3
1184     disable_safe "${struct}_${member}"
1185     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1186         enable_safe "${struct}_${member}"
1187 }
1188
1189 check_builtin(){
1190     log check_builtin "$@"
1191     name=$1
1192     headers=$2
1193     builtin=$3
1194     shift 3
1195     disable "$name"
1196     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1197 }
1198
1199 check_compile_assert(){
1200     log check_compile_assert "$@"
1201     name=$1
1202     headers=$2
1203     condition=$3
1204     shift 3
1205     disable "$name"
1206     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1207 }
1208
1209 require(){
1210     name="$1"
1211     header="$2"
1212     func="$3"
1213     shift 3
1214     check_lib $header $func "$@" || die "ERROR: $name not found"
1215 }
1216
1217 require2(){
1218     name="$1"
1219     headers="$2"
1220     func="$3"
1221     shift 3
1222     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1223 }
1224
1225 require_cpp(){
1226     name="$1"
1227     headers="$2"
1228     classes="$3"
1229     shift 3
1230     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1231 }
1232
1233 use_pkg_config(){
1234     pkg="$1"
1235     check_pkg_config "$@" || return 1
1236     add_cflags    $(get_safe "${pkg}_cflags")
1237     add_extralibs $(get_safe "${pkg}_libs")
1238 }
1239
1240 require_pkg_config(){
1241     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1242 }
1243
1244 require_libfreetype(){
1245     log require_libfreetype "$@"
1246     pkg="freetype2"
1247     check_cmd $pkg_config --exists --print-errors $pkg \
1248       || die "ERROR: $pkg not found"
1249     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1250     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1251     {
1252         echo "#include <ft2build.h>"
1253         echo "#include FT_FREETYPE_H"
1254         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1255         echo "int main(void) { return 0; }"
1256     } | check_ld "cc" $pkg_cflags $pkg_libs \
1257       && set_safe "${pkg}_cflags" $pkg_cflags \
1258       && set_safe "${pkg}_libs"   $pkg_libs \
1259       || die "ERROR: $pkg not found"
1260     add_cflags    $(get_safe "${pkg}_cflags")
1261     add_extralibs $(get_safe "${pkg}_libs")
1262 }
1263
1264 hostcc_e(){
1265     eval printf '%s\\n' $HOSTCC_E
1266 }
1267
1268 hostcc_o(){
1269     eval printf '%s\\n' $HOSTCC_O
1270 }
1271
1272 check_host_cc(){
1273     log check_host_cc "$@"
1274     cat > $TMPC
1275     log_file $TMPC
1276     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1277 }
1278
1279 check_host_cpp(){
1280     log check_host_cpp "$@"
1281     cat > $TMPC
1282     log_file $TMPC
1283     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1284 }
1285
1286 check_host_cppflags(){
1287     log check_host_cppflags "$@"
1288     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1289 int x;
1290 EOF
1291 }
1292
1293 check_host_cflags(){
1294     log check_host_cflags "$@"
1295     set -- $($host_cflags_filter "$@")
1296     check_host_cc "$@" <<EOF && append host_cflags "$@"
1297 int x;
1298 EOF
1299 }
1300
1301 check_host_cpp_condition(){
1302     log check_host_cpp_condition "$@"
1303     header=$1
1304     condition=$2
1305     shift 2
1306     check_host_cpp "$@" <<EOF
1307 #include <$header>
1308 #if !($condition)
1309 #error "unsatisfied condition: $condition"
1310 #endif
1311 EOF
1312 }
1313
1314 apply(){
1315     file=$1
1316     shift
1317     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1318 }
1319
1320 cp_if_changed(){
1321     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1322     mkdir -p "$(dirname $2)"
1323     $cp_f "$1" "$2"
1324 }
1325
1326 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1327 # system-dependent things.
1328
1329 COMPONENT_LIST="
1330     bsfs
1331     decoders
1332     demuxers
1333     encoders
1334     filters
1335     hwaccels
1336     indevs
1337     muxers
1338     outdevs
1339     parsers
1340     protocols
1341 "
1342
1343 EXAMPLE_LIST="
1344     avio_reading_example
1345     avio_list_dir_example
1346     decoding_encoding_example
1347     demuxing_decoding_example
1348     extract_mvs_example
1349     filter_audio_example
1350     filtering_audio_example
1351     filtering_video_example
1352     metadata_example
1353     muxing_example
1354     qsvdec_example
1355     remuxing_example
1356     resampling_audio_example
1357     scaling_video_example
1358     transcode_aac_example
1359     transcoding_example
1360 "
1361
1362 EXTERNAL_LIBRARY_LIST="
1363     avisynth
1364     bzlib
1365     crystalhd
1366     decklink
1367     frei0r
1368     gnutls
1369     iconv
1370     ladspa
1371     libaacplus
1372     libass
1373     libbluray
1374     libbs2b
1375     libcaca
1376     libcdio
1377     libcelt
1378     libdc1394
1379     libdcadec
1380     libfaac
1381     libfdk_aac
1382     libflite
1383     libfontconfig
1384     libfreetype
1385     libfribidi
1386     libgme
1387     libgsm
1388     libiec61883
1389     libilbc
1390     libkvazaar
1391     libmfx
1392     libmodplug
1393     libmp3lame
1394     libnut
1395     libopencore_amrnb
1396     libopencore_amrwb
1397     libopencv
1398     libopenh264
1399     libopenjpeg
1400     libopus
1401     libpulse
1402     libquvi
1403     librtmp
1404     libschroedinger
1405     libshine
1406     libsmbclient
1407     libsnappy
1408     libsoxr
1409     libspeex
1410     libssh
1411     libstagefright_h264
1412     libtheora
1413     libtwolame
1414     libutvideo
1415     libv4l2
1416     libvidstab
1417     libvo_aacenc
1418     libvo_amrwbenc
1419     libvorbis
1420     libvpx
1421     libwavpack
1422     libwebp
1423     libx264
1424     libx265
1425     libxavs
1426     libxcb
1427     libxcb_shm
1428     libxcb_shape
1429     libxcb_xfixes
1430     libxvid
1431     libzmq
1432     libzvbi
1433     lzma
1434     mmal
1435     nvenc
1436     openal
1437     opencl
1438     opengl
1439     openssl
1440     sdl
1441     securetransport
1442     x11grab
1443     xlib
1444     zlib
1445 "
1446
1447 DOCUMENT_LIST="
1448     doc
1449     htmlpages
1450     manpages
1451     podpages
1452     txtpages
1453 "
1454
1455 FEATURE_LIST="
1456     ftrapv
1457     gray
1458     hardcoded_tables
1459     runtime_cpudetect
1460     safe_bitstream_reader
1461     shared
1462     small
1463     static
1464     swscale_alpha
1465 "
1466
1467 HWACCEL_LIST="
1468     d3d11va
1469     dxva2
1470     vaapi
1471     vda
1472     vdpau
1473     xvmc
1474 "
1475
1476 LIBRARY_LIST="
1477     avcodec
1478     avdevice
1479     avfilter
1480     avformat
1481     avresample
1482     avutil
1483     postproc
1484     swresample
1485     swscale
1486 "
1487
1488 LICENSE_LIST="
1489     gpl
1490     nonfree
1491     version3
1492 "
1493
1494 PROGRAM_LIST="
1495     ffplay
1496     ffprobe
1497     ffserver
1498     ffmpeg
1499 "
1500
1501 SUBSYSTEM_LIST="
1502     dct
1503     dwt
1504     error_resilience
1505     faan
1506     fast_unaligned
1507     fft
1508     lsp
1509     lzo
1510     mdct
1511     pixelutils
1512     network
1513     rdft
1514 "
1515
1516 CONFIG_LIST="
1517     $COMPONENT_LIST
1518     $DOCUMENT_LIST
1519     $EXAMPLE_LIST
1520     $EXTERNAL_LIBRARY_LIST
1521     $FEATURE_LIST
1522     $HWACCEL_LIST
1523     $LICENSE_LIST
1524     $LIBRARY_LIST
1525     $PROGRAM_LIST
1526     $SUBSYSTEM_LIST
1527     fontconfig
1528     incompatible_libav_abi
1529     memalign_hack
1530     memory_poisoning
1531     neon_clobber_test
1532     pic
1533     pod2man
1534     raise_major
1535     thumb
1536     valgrind_backtrace
1537     xmm_clobber_test
1538 "
1539
1540 THREADS_LIST="
1541     pthreads
1542     os2threads
1543     w32threads
1544 "
1545
1546 ATOMICS_LIST="
1547     atomics_gcc
1548     atomics_suncc
1549     atomics_win32
1550 "
1551
1552 ARCH_LIST="
1553     aarch64
1554     alpha
1555     arm
1556     avr32
1557     avr32_ap
1558     avr32_uc
1559     bfin
1560     ia64
1561     m68k
1562     mips
1563     mips64
1564     parisc
1565     ppc
1566     ppc64
1567     s390
1568     sh4
1569     sparc
1570     sparc64
1571     tilegx
1572     tilepro
1573     tomi
1574     x86
1575     x86_32
1576     x86_64
1577 "
1578
1579 ARCH_EXT_LIST_ARM="
1580     armv5te
1581     armv6
1582     armv6t2
1583     armv8
1584     neon
1585     vfp
1586     vfpv3
1587     setend
1588 "
1589
1590 ARCH_EXT_LIST_MIPS="
1591     mipsfpu
1592     mips32r2
1593     mips32r5
1594     mips64r6
1595     mipsdspr1
1596     mipsdspr2
1597     msa
1598 "
1599
1600 ARCH_EXT_LIST_LOONGSON="
1601     loongson2
1602     loongson3
1603     mmi
1604 "
1605
1606 ARCH_EXT_LIST_X86_SIMD="
1607     amd3dnow
1608     amd3dnowext
1609     avx
1610     avx2
1611     fma3
1612     fma4
1613     mmx
1614     mmxext
1615     sse
1616     sse2
1617     sse3
1618     sse4
1619     sse42
1620     ssse3
1621     xop
1622 "
1623
1624 ARCH_EXT_LIST_PPC="
1625     altivec
1626     dcbzl
1627     ldbrx
1628     power8
1629     ppc4xx
1630     vsx
1631 "
1632
1633 ARCH_EXT_LIST_X86="
1634     $ARCH_EXT_LIST_X86_SIMD
1635     cpunop
1636     i686
1637 "
1638
1639 ARCH_EXT_LIST="
1640     $ARCH_EXT_LIST_ARM
1641     $ARCH_EXT_LIST_PPC
1642     $ARCH_EXT_LIST_X86
1643     $ARCH_EXT_LIST_MIPS
1644     $ARCH_EXT_LIST_LOONGSON
1645 "
1646
1647 ARCH_FEATURES="
1648     aligned_stack
1649     fast_64bit
1650     fast_clz
1651     fast_cmov
1652     local_aligned_8
1653     local_aligned_16
1654     local_aligned_32
1655     simd_align_16
1656 "
1657
1658 BUILTIN_LIST="
1659     atomic_cas_ptr
1660     atomic_compare_exchange
1661     machine_rw_barrier
1662     MemoryBarrier
1663     mm_empty
1664     rdtsc
1665     sarestart
1666     sync_val_compare_and_swap
1667 "
1668 HAVE_LIST_CMDLINE="
1669     inline_asm
1670     symver
1671     yasm
1672 "
1673
1674 HAVE_LIST_PUB="
1675     bigendian
1676     fast_unaligned
1677     incompatible_libav_abi
1678 "
1679
1680 HEADERS_LIST="
1681     alsa_asoundlib_h
1682     altivec_h
1683     arpa_inet_h
1684     asm_types_h
1685     cdio_paranoia_h
1686     cdio_paranoia_paranoia_h
1687     dev_bktr_ioctl_bt848_h
1688     dev_bktr_ioctl_meteor_h
1689     dev_ic_bt8xx_h
1690     dev_video_bktr_ioctl_bt848_h
1691     dev_video_meteor_ioctl_meteor_h
1692     direct_h
1693     dlfcn_h
1694     d3d11_h
1695     dxva_h
1696     ES2_gl_h
1697     gsm_h
1698     io_h
1699     mach_mach_time_h
1700     machine_ioctl_bt848_h
1701     machine_ioctl_meteor_h
1702     malloc_h
1703     openjpeg_1_5_openjpeg_h
1704     OpenGL_gl3_h
1705     poll_h
1706     sndio_h
1707     soundcard_h
1708     sys_mman_h
1709     sys_param_h
1710     sys_resource_h
1711     sys_select_h
1712     sys_soundcard_h
1713     sys_time_h
1714     sys_un_h
1715     sys_videoio_h
1716     termios_h
1717     udplite_h
1718     unistd_h
1719     valgrind_valgrind_h
1720     windows_h
1721     winsock2_h
1722 "
1723
1724 INTRINSICS_LIST="
1725     intrinsics_neon
1726 "
1727
1728 MATH_FUNCS="
1729     atanf
1730     atan2f
1731     cbrt
1732     cbrtf
1733     cosf
1734     exp2
1735     exp2f
1736     expf
1737     isinf
1738     isnan
1739     ldexpf
1740     llrint
1741     llrintf
1742     log2
1743     log2f
1744     log10f
1745     lrint
1746     lrintf
1747     powf
1748     rint
1749     round
1750     roundf
1751     sinf
1752     trunc
1753     truncf
1754 "
1755
1756 SYSTEM_FUNCS="
1757     access
1758     aligned_malloc
1759     clock_gettime
1760     closesocket
1761     CommandLineToArgvW
1762     CoTaskMemFree
1763     CryptGenRandom
1764     dlopen
1765     fcntl
1766     flt_lim
1767     fork
1768     getaddrinfo
1769     gethrtime
1770     getopt
1771     GetProcessAffinityMask
1772     GetProcessMemoryInfo
1773     GetProcessTimes
1774     getrusage
1775     getservbyport
1776     GetSystemTimeAsFileTime
1777     gettimeofday
1778     glob
1779     glXGetProcAddress
1780     gmtime_r
1781     inet_aton
1782     isatty
1783     jack_port_get_latency_range
1784     kbhit
1785     localtime_r
1786     lzo1x_999_compress
1787     mach_absolute_time
1788     MapViewOfFile
1789     memalign
1790     mkstemp
1791     mmap
1792     mprotect
1793     nanosleep
1794     PeekNamedPipe
1795     posix_memalign
1796     pthread_cancel
1797     sched_getaffinity
1798     SetConsoleTextAttribute
1799     SetConsoleCtrlHandler
1800     setmode
1801     setrlimit
1802     Sleep
1803     strerror_r
1804     sysconf
1805     sysctl
1806     usleep
1807     VirtualAlloc
1808     wglGetProcAddress
1809 "
1810
1811 TOOLCHAIN_FEATURES="
1812     as_dn_directive
1813     as_func
1814     as_object_arch
1815     asm_mod_q
1816     attribute_may_alias
1817     attribute_packed
1818     ebp_available
1819     ebx_available
1820     gnu_as
1821     gnu_windres
1822     ibm_asm
1823     inline_asm_labels
1824     inline_asm_nonlocal_labels
1825     inline_asm_direct_symbol_refs
1826     pragma_deprecated
1827     rsync_contimeout
1828     symver_asm_label
1829     symver_gnu_asm
1830     vfp_args
1831     xform_asm
1832     xmm_clobbers
1833 "
1834
1835 TYPES_LIST="
1836     CONDITION_VARIABLE_Ptr
1837     socklen_t
1838     struct_addrinfo
1839     struct_dcadec_exss_info_matrix_encoding
1840     struct_group_source_req
1841     struct_ip_mreq_source
1842     struct_ipv6_mreq
1843     struct_pollfd
1844     struct_rusage_ru_maxrss
1845     struct_sctp_event_subscribe
1846     struct_sockaddr_in6
1847     struct_sockaddr_sa_len
1848     struct_sockaddr_storage
1849     struct_stat_st_mtim_tv_nsec
1850     struct_v4l2_frmivalenum_discrete
1851 "
1852
1853 HAVE_LIST="
1854     $ARCH_EXT_LIST
1855     $(add_suffix _external $ARCH_EXT_LIST)
1856     $(add_suffix _inline   $ARCH_EXT_LIST)
1857     $ARCH_FEATURES
1858     $ATOMICS_LIST
1859     $BUILTIN_LIST
1860     $HAVE_LIST_CMDLINE
1861     $HAVE_LIST_PUB
1862     $HEADERS_LIST
1863     $INTRINSICS_LIST
1864     $MATH_FUNCS
1865     $SYSTEM_FUNCS
1866     $THREADS_LIST
1867     $TOOLCHAIN_FEATURES
1868     $TYPES_LIST
1869     atomics_native
1870     dos_paths
1871     dxva2api_cobj
1872     dxva2_lib
1873     libc_msvcrt
1874     libdc1394_1
1875     libdc1394_2
1876     makeinfo
1877     makeinfo_html
1878     perl
1879     pod2man
1880     sdl
1881     section_data_rel_ro
1882     texi2html
1883     threads
1884     vaapi_x11
1885     vdpau_x11
1886     xlib
1887 "
1888
1889 # options emitted with CONFIG_ prefix but not available on the command line
1890 CONFIG_EXTRA="
1891     aandcttables
1892     ac3dsp
1893     audio_frame_queue
1894     audiodsp
1895     blockdsp
1896     bswapdsp
1897     cabac
1898     dvprofile
1899     exif
1900     faandct
1901     faanidct
1902     fdctdsp
1903     flacdsp
1904     fmtconvert
1905     frame_thread_encoder
1906     gcrypt
1907     gmp
1908     golomb
1909     gplv3
1910     h263dsp
1911     h264chroma
1912     h264dsp
1913     h264pred
1914     h264qpel
1915     hpeldsp
1916     huffman
1917     huffyuvdsp
1918     huffyuvencdsp
1919     idctdsp
1920     iirfilter
1921     imdct15
1922     intrax8
1923     ividsp
1924     jpegtables
1925     libx262
1926     lgplv3
1927     llauddsp
1928     llviddsp
1929     lpc
1930     me_cmp
1931     mpeg_er
1932     mpegaudio
1933     mpegaudiodsp
1934     mpegvideo
1935     mpegvideoenc
1936     mss34dsp
1937     pixblockdsp
1938     qpeldsp
1939     qsv
1940     qsvdec
1941     qsvenc
1942     rangecoder
1943     riffdec
1944     riffenc
1945     rtpdec
1946     rtpenc_chain
1947     rv34dsp
1948     sinewin
1949     snappy
1950     startcode
1951     texturedsp
1952     texturedspenc
1953     tpeldsp
1954     videodsp
1955     vp3dsp
1956     vp56dsp
1957     wma_freqs
1958 "
1959
1960 CMDLINE_SELECT="
1961     $ARCH_EXT_LIST
1962     $CONFIG_LIST
1963     $HAVE_LIST_CMDLINE
1964     $THREADS_LIST
1965     asm
1966     cross_compile
1967     debug
1968     extra_warnings
1969     logging
1970     lto
1971     optimizations
1972     rpath
1973     stripping
1974 "
1975
1976 PATHS_LIST="
1977     bindir
1978     datadir
1979     docdir
1980     incdir
1981     libdir
1982     mandir
1983     pkgconfigdir
1984     prefix
1985     shlibdir
1986 "
1987
1988 CMDLINE_SET="
1989     $PATHS_LIST
1990     ar
1991     arch
1992     as
1993     assert_level
1994     build_suffix
1995     cc
1996     cpu
1997     cross_prefix
1998     cxx
1999     dep_cc
2000     doxygen
2001     env
2002     extra_version
2003     gas
2004     host_cc
2005     host_cflags
2006     host_ld
2007     host_ldflags
2008     host_libs
2009     host_os
2010     install
2011     ld
2012     logfile
2013     malloc_prefix
2014     nm
2015     optflags
2016     pkg_config
2017     pkg_config_flags
2018     progs_suffix
2019     random_seed
2020     ranlib
2021     samples
2022     strip
2023     sws_max_filter_size
2024     sysinclude
2025     sysroot
2026     target_exec
2027     target_os
2028     target_path
2029     target_samples
2030     tempprefix
2031     toolchain
2032     valgrind
2033     yasmexe
2034 "
2035
2036 CMDLINE_APPEND="
2037     extra_cflags
2038     extra_cxxflags
2039     host_cppflags
2040 "
2041
2042 # code dependency declarations
2043
2044 # architecture extensions
2045
2046 armv5te_deps="arm"
2047 armv6_deps="arm"
2048 armv6t2_deps="arm"
2049 armv8_deps="aarch64"
2050 neon_deps_any="aarch64 arm"
2051 intrinsics_neon_deps="neon"
2052 vfp_deps_any="aarch64 arm"
2053 vfpv3_deps="vfp"
2054 setend_deps="arm"
2055
2056 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2057
2058 mipsfpu_deps="mips"
2059 mipsdspr1_deps="mips"
2060 mipsdspr2_deps="mips"
2061 mips32r2_deps="mips"
2062 mips32r5_deps="mips"
2063 mips64r6_deps="mips"
2064 msa_deps="mips"
2065 mmi_deps="mips"
2066
2067 altivec_deps="ppc"
2068 dcbzl_deps="ppc"
2069 ldbrx_deps="ppc"
2070 ppc4xx_deps="ppc"
2071 vsx_deps="altivec"
2072 power8_deps="vsx"
2073
2074 cpunop_deps="i686"
2075 x86_64_select="i686"
2076 x86_64_suggest="fast_cmov"
2077
2078 amd3dnow_deps="mmx"
2079 amd3dnowext_deps="amd3dnow"
2080 i686_deps="x86"
2081 mmx_deps="x86"
2082 mmxext_deps="mmx"
2083 sse_deps="mmxext"
2084 sse2_deps="sse"
2085 sse3_deps="sse2"
2086 ssse3_deps="sse3"
2087 sse4_deps="ssse3"
2088 sse42_deps="sse4"
2089 avx_deps="sse42"
2090 xop_deps="avx"
2091 fma3_deps="avx"
2092 fma4_deps="avx"
2093 avx2_deps="avx"
2094
2095 mmx_external_deps="yasm"
2096 mmx_inline_deps="inline_asm"
2097 mmx_suggest="mmx_external mmx_inline"
2098
2099 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2100     eval dep=\$${ext}_deps
2101     eval ${ext}_external_deps='"${dep}_external"'
2102     eval ${ext}_inline_deps='"${dep}_inline"'
2103     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2104 done
2105
2106 aligned_stack_if_any="aarch64 ppc x86"
2107 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2108 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2109 fast_unaligned_if_any="aarch64 ppc x86"
2110 simd_align_16_if_any="altivec neon sse"
2111
2112 # system capabilities
2113 symver_if_any="symver_asm_label symver_gnu_asm"
2114 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2115
2116 # threading support
2117 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2118 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2119 atomics_win32_if="MemoryBarrier"
2120 atomics_native_if_any="$ATOMICS_LIST"
2121 w32threads_deps="atomics_native"
2122 threads_if_any="$THREADS_LIST"
2123
2124 # subsystems
2125 dct_select="rdft"
2126 error_resilience_select="me_cmp"
2127 faandct_deps="faan fdctdsp"
2128 faanidct_deps="faan idctdsp"
2129 frame_thread_encoder_deps="encoders threads"
2130 intrax8_select="error_resilience"
2131 mdct_select="fft"
2132 rdft_select="fft"
2133 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2134 mpeg_er_select="error_resilience"
2135 mpegaudio_select="mpegaudiodsp"
2136 mpegaudiodsp_select="dct"
2137 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2138 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2139 qsvdec_select="qsv"
2140 qsvenc_select="qsv"
2141
2142 # decoders / encoders
2143 aac_decoder_select="imdct15 mdct sinewin"
2144 aac_fixed_decoder_select="mdct sinewin"
2145 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2146 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2147 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2148 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2149 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2150 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2151 aic_decoder_select="golomb idctdsp"
2152 alac_encoder_select="lpc"
2153 als_decoder_select="bswapdsp"
2154 amrnb_decoder_select="lsp"
2155 amrwb_decoder_select="lsp"
2156 amv_decoder_select="sp5x_decoder exif"
2157 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2158 ape_decoder_select="bswapdsp llauddsp"
2159 apng_decoder_select="zlib"
2160 apng_encoder_select="huffyuvencdsp zlib"
2161 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2162 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2163 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2164 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2165 atrac1_decoder_select="mdct sinewin"
2166 atrac3_decoder_select="mdct"
2167 atrac3p_decoder_select="mdct sinewin"
2168 avrn_decoder_select="exif jpegtables"
2169 bink_decoder_select="blockdsp hpeldsp"
2170 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2171 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2172 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2173 cllc_decoder_select="bswapdsp"
2174 comfortnoise_encoder_select="lpc"
2175 cook_decoder_select="audiodsp mdct sinewin"
2176 cscd_decoder_select="lzo"
2177 cscd_decoder_suggest="zlib"
2178 dca_decoder_select="fmtconvert mdct"
2179 dds_decoder_select="texturedsp"
2180 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2181 dnxhd_decoder_select="blockdsp idctdsp"
2182 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2183 dvvideo_decoder_select="dvprofile idctdsp"
2184 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2185 dxa_decoder_select="zlib"
2186 eac3_decoder_select="ac3_decoder"
2187 eac3_encoder_select="ac3_encoder"
2188 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2189 eatgq_decoder_select="aandcttables"
2190 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2191 exr_decoder_select="zlib"
2192 ffv1_decoder_select="golomb rangecoder"
2193 ffv1_encoder_select="rangecoder"
2194 ffvhuff_decoder_select="huffyuv_decoder"
2195 ffvhuff_encoder_select="huffyuv_encoder"
2196 fic_decoder_select="golomb"
2197 flac_decoder_select="flacdsp golomb"
2198 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2199 flashsv_decoder_select="zlib"
2200 flashsv_encoder_select="zlib"
2201 flashsv2_encoder_select="zlib"
2202 flashsv2_decoder_select="zlib"
2203 flv_decoder_select="h263_decoder"
2204 flv_encoder_select="h263_encoder"
2205 fourxm_decoder_select="blockdsp bswapdsp"
2206 fraps_decoder_select="bswapdsp huffman"
2207 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2208 g729_decoder_select="audiodsp"
2209 h261_decoder_select="mpeg_er mpegvideo"
2210 h261_encoder_select="aandcttables mpegvideoenc"
2211 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2212 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2213 h263i_decoder_select="h263_decoder"
2214 h263p_decoder_select="h263_decoder"
2215 h263p_encoder_select="h263_encoder"
2216 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2217 h264_decoder_suggest="error_resilience"
2218 h264_qsv_decoder_deps="libmfx"
2219 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2220 h264_qsv_encoder_deps="libmfx"
2221 h264_qsv_encoder_select="qsvenc"
2222 hap_decoder_select="snappy texturedsp"
2223 hap_encoder_deps="libsnappy"
2224 hap_encoder_select="texturedspenc"
2225 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2226 hevc_qsv_encoder_deps="libmfx"
2227 hevc_qsv_encoder_select="qsvenc"
2228 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2229 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2230 iac_decoder_select="imc_decoder"
2231 imc_decoder_select="bswapdsp fft mdct sinewin"
2232 indeo3_decoder_select="hpeldsp"
2233 indeo4_decoder_select="ividsp"
2234 indeo5_decoder_select="ividsp"
2235 interplay_video_decoder_select="hpeldsp"
2236 jpegls_decoder_select="golomb mjpeg_decoder"
2237 jpegls_encoder_select="golomb"
2238 jv_decoder_select="blockdsp"
2239 lagarith_decoder_select="huffyuvdsp"
2240 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2241 loco_decoder_select="golomb"
2242 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2243 metasound_decoder_select="lsp mdct sinewin"
2244 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2245 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2246 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2247 mjpegb_decoder_select="mjpeg_decoder"
2248 mlp_decoder_select="mlp_parser"
2249 motionpixels_decoder_select="bswapdsp"
2250 mp1_decoder_select="mpegaudio"
2251 mp1float_decoder_select="mpegaudio"
2252 mp2_decoder_select="mpegaudio"
2253 mp2float_decoder_select="mpegaudio"
2254 mp3_decoder_select="mpegaudio"
2255 mp3adu_decoder_select="mpegaudio"
2256 mp3adufloat_decoder_select="mpegaudio"
2257 mp3float_decoder_select="mpegaudio"
2258 mp3on4_decoder_select="mpegaudio"
2259 mp3on4float_decoder_select="mpegaudio"
2260 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2261 mpc8_decoder_select="mpegaudiodsp"
2262 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2263 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2264 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2265 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2266 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2267 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2268 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2269 mpeg2_qsv_encoder_deps="libmfx"
2270 mpeg2_qsv_encoder_select="qsvenc"
2271 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2272 mpeg4_encoder_select="h263_encoder"
2273 msa1_decoder_select="mss34dsp"
2274 msmpeg4v1_decoder_select="h263_decoder"
2275 msmpeg4v2_decoder_select="h263_decoder"
2276 msmpeg4v2_encoder_select="h263_encoder"
2277 msmpeg4v3_decoder_select="h263_decoder"
2278 msmpeg4v3_encoder_select="h263_encoder"
2279 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2280 mts2_decoder_select="mss34dsp"
2281 mxpeg_decoder_select="mjpeg_decoder"
2282 nellymoser_decoder_select="mdct sinewin"
2283 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2284 nuv_decoder_select="idctdsp lzo"
2285 on2avc_decoder_select="mdct"
2286 opus_decoder_deps="swresample"
2287 opus_decoder_select="imdct15"
2288 png_decoder_select="zlib"
2289 png_encoder_select="huffyuvencdsp zlib"
2290 prores_decoder_select="blockdsp idctdsp"
2291 prores_encoder_select="fdctdsp"
2292 qcelp_decoder_select="lsp"
2293 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2294 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2295 ra_144_decoder_select="audiodsp"
2296 ralf_decoder_select="golomb"
2297 rawvideo_decoder_select="bswapdsp"
2298 rtjpeg_decoder_select="me_cmp"
2299 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2300 rv10_encoder_select="h263_encoder"
2301 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2302 rv20_encoder_select="h263_encoder"
2303 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2304 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2305 shorten_decoder_select="golomb"
2306 sipr_decoder_select="lsp"
2307 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2308 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2309 sonic_decoder_select="golomb rangecoder"
2310 sonic_encoder_select="golomb rangecoder"
2311 sonic_ls_encoder_select="golomb rangecoder"
2312 sp5x_decoder_select="mjpeg_decoder"
2313 svq1_decoder_select="hpeldsp"
2314 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2315 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2316 svq3_decoder_suggest="zlib"
2317 tak_decoder_select="audiodsp"
2318 tdsc_decoder_select="zlib mjpeg_decoder"
2319 theora_decoder_select="vp3_decoder"
2320 thp_decoder_select="mjpeg_decoder"
2321 tiff_decoder_suggest="zlib lzma"
2322 tiff_encoder_suggest="zlib"
2323 truehd_decoder_select="mlp_parser"
2324 truemotion2_decoder_select="bswapdsp"
2325 truespeech_decoder_select="bswapdsp"
2326 tscc_decoder_select="zlib"
2327 twinvq_decoder_select="mdct lsp sinewin"
2328 txd_decoder_select="texturedsp"
2329 utvideo_decoder_select="bswapdsp"
2330 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2331 vble_decoder_select="huffyuvdsp"
2332 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2333 vc1image_decoder_select="vc1_decoder"
2334 vorbis_decoder_select="mdct"
2335 vorbis_encoder_select="mdct"
2336 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2337 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2338 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2339 vp6a_decoder_select="vp6_decoder"
2340 vp6f_decoder_select="vp6_decoder"
2341 vp7_decoder_select="h264pred videodsp"
2342 vp8_decoder_select="h264pred videodsp"
2343 vp9_decoder_select="videodsp vp9_parser"
2344 webp_decoder_select="vp8_decoder"
2345 wmalossless_decoder_select="llauddsp"
2346 wmapro_decoder_select="mdct sinewin wma_freqs"
2347 wmav1_decoder_select="mdct sinewin wma_freqs"
2348 wmav1_encoder_select="mdct sinewin wma_freqs"
2349 wmav2_decoder_select="mdct sinewin wma_freqs"
2350 wmav2_encoder_select="mdct sinewin wma_freqs"
2351 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2352 wmv1_decoder_select="h263_decoder"
2353 wmv1_encoder_select="h263_encoder"
2354 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2355 wmv2_encoder_select="h263_encoder"
2356 wmv3_decoder_select="vc1_decoder"
2357 wmv3image_decoder_select="wmv3_decoder"
2358 zerocodec_decoder_select="zlib"
2359 zlib_decoder_select="zlib"
2360 zlib_encoder_select="zlib"
2361 zmbv_decoder_select="zlib"
2362 zmbv_encoder_select="zlib"
2363
2364 # hardware accelerators
2365 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2366 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2367 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2368 vaapi_deps="va_va_h"
2369 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2370 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2371 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2372 xvmc_deps="X11_extensions_XvMClib_h"
2373
2374 h263_vaapi_hwaccel_deps="vaapi"
2375 h263_vaapi_hwaccel_select="h263_decoder"
2376 h263_vdpau_hwaccel_deps="vdpau"
2377 h263_vdpau_hwaccel_select="h263_decoder"
2378 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2379 h264_d3d11va_hwaccel_deps="d3d11va"
2380 h264_d3d11va_hwaccel_select="h264_decoder"
2381 h264_dxva2_hwaccel_deps="dxva2"
2382 h264_dxva2_hwaccel_select="h264_decoder"
2383 h264_mmal_decoder_deps="mmal"
2384 h264_mmal_hwaccel_deps="mmal"
2385 h264_mmal_decoder_select="h264_decoder"
2386 h264_mmal_encoder_deps="mmal"
2387 h264_qsv_hwaccel_deps="libmfx"
2388 h264_vaapi_hwaccel_deps="vaapi"
2389 h264_vaapi_hwaccel_select="h264_decoder"
2390 h264_vda_decoder_deps="vda"
2391 h264_vda_decoder_select="h264_decoder"
2392 h264_vda_hwaccel_deps="vda"
2393 h264_vda_hwaccel_select="h264_decoder"
2394 h264_vda_old_hwaccel_deps="vda"
2395 h264_vda_old_hwaccel_select="h264_decoder"
2396 h264_vdpau_decoder_deps="vdpau"
2397 h264_vdpau_decoder_select="h264_decoder"
2398 h264_vdpau_hwaccel_deps="vdpau"
2399 h264_vdpau_hwaccel_select="h264_decoder"
2400 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2401 hevc_d3d11va_hwaccel_select="hevc_decoder"
2402 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2403 hevc_dxva2_hwaccel_select="hevc_decoder"
2404 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2405 hevc_vdpau_hwaccel_select="hevc_decoder"
2406 mpeg_vdpau_decoder_deps="vdpau"
2407 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2408 mpeg_xvmc_hwaccel_deps="xvmc"
2409 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2410 mpeg1_vdpau_decoder_deps="vdpau"
2411 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2412 mpeg1_vdpau_hwaccel_deps="vdpau"
2413 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2414 mpeg1_xvmc_hwaccel_deps="xvmc"
2415 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2416 mpeg2_crystalhd_decoder_select="crystalhd"
2417 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2418 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2419 mpeg2_dxva2_hwaccel_deps="dxva2"
2420 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2421 mpeg2_vaapi_hwaccel_deps="vaapi"
2422 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2423 mpeg2_vdpau_hwaccel_deps="vdpau"
2424 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2425 mpeg2_xvmc_hwaccel_deps="xvmc"
2426 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2427 mpeg4_crystalhd_decoder_select="crystalhd"
2428 mpeg4_vaapi_hwaccel_deps="vaapi"
2429 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2430 mpeg4_vdpau_decoder_deps="vdpau"
2431 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2432 mpeg4_vdpau_hwaccel_deps="vdpau"
2433 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2434 msmpeg4_crystalhd_decoder_select="crystalhd"
2435 vc1_crystalhd_decoder_select="crystalhd"
2436 vc1_d3d11va_hwaccel_deps="d3d11va"
2437 vc1_d3d11va_hwaccel_select="vc1_decoder"
2438 vc1_dxva2_hwaccel_deps="dxva2"
2439 vc1_dxva2_hwaccel_select="vc1_decoder"
2440 vc1_vaapi_hwaccel_deps="vaapi"
2441 vc1_vaapi_hwaccel_select="vc1_decoder"
2442 vc1_vdpau_decoder_deps="vdpau"
2443 vc1_vdpau_decoder_select="vc1_decoder"
2444 vc1_vdpau_hwaccel_deps="vdpau"
2445 vc1_vdpau_hwaccel_select="vc1_decoder"
2446 wmv3_crystalhd_decoder_select="crystalhd"
2447 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2448 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2449 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2450 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2451 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2452
2453 # parsers
2454 h264_parser_select="h264_decoder"
2455 hevc_parser_select="golomb"
2456 mpegvideo_parser_select="mpegvideo"
2457 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2458 vc1_parser_select="mpegvideo startcode vc1_decoder"
2459
2460 # bitstream_filters
2461 mjpeg2jpeg_bsf_select="jpegtables"
2462
2463 # external libraries
2464 libaacplus_encoder_deps="libaacplus"
2465 libcelt_decoder_deps="libcelt"
2466 libdcadec_decoder_deps="libdcadec"
2467 libfaac_encoder_deps="libfaac"
2468 libfaac_encoder_select="audio_frame_queue"
2469 libfdk_aac_decoder_deps="libfdk_aac"
2470 libfdk_aac_encoder_deps="libfdk_aac"
2471 libfdk_aac_encoder_select="audio_frame_queue"
2472 libgme_demuxer_deps="libgme"
2473 libgsm_decoder_deps="libgsm"
2474 libgsm_encoder_deps="libgsm"
2475 libgsm_ms_decoder_deps="libgsm"
2476 libgsm_ms_encoder_deps="libgsm"
2477 libilbc_decoder_deps="libilbc"
2478 libilbc_encoder_deps="libilbc"
2479 libkvazaar_encoder_deps="libkvazaar"
2480 libmodplug_demuxer_deps="libmodplug"
2481 libmp3lame_encoder_deps="libmp3lame"
2482 libmp3lame_encoder_select="audio_frame_queue"
2483 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2484 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2485 libopencore_amrnb_encoder_select="audio_frame_queue"
2486 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2487 libopenh264_encoder_deps="libopenh264"
2488 libopenjpeg_decoder_deps="libopenjpeg"
2489 libopenjpeg_encoder_deps="libopenjpeg"
2490 libopus_decoder_deps="libopus"
2491 libopus_encoder_deps="libopus"
2492 libopus_encoder_select="audio_frame_queue"
2493 libquvi_demuxer_deps="libquvi"
2494 libschroedinger_decoder_deps="libschroedinger"
2495 libschroedinger_encoder_deps="libschroedinger"
2496 libshine_encoder_deps="libshine"
2497 libshine_encoder_select="audio_frame_queue"
2498 libspeex_decoder_deps="libspeex"
2499 libspeex_encoder_deps="libspeex"
2500 libspeex_encoder_select="audio_frame_queue"
2501 libstagefright_h264_decoder_deps="libstagefright_h264"
2502 libtheora_encoder_deps="libtheora"
2503 libtwolame_encoder_deps="libtwolame"
2504 libvo_aacenc_encoder_deps="libvo_aacenc"
2505 libvo_aacenc_encoder_select="audio_frame_queue"
2506 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2507 libvorbis_decoder_deps="libvorbis"
2508 libvorbis_encoder_deps="libvorbis"
2509 libvorbis_encoder_select="audio_frame_queue"
2510 libvpx_vp8_decoder_deps="libvpx"
2511 libvpx_vp8_encoder_deps="libvpx"
2512 libvpx_vp9_decoder_deps="libvpx"
2513 libvpx_vp9_encoder_deps="libvpx"
2514 libwavpack_encoder_deps="libwavpack"
2515 libwebp_encoder_deps="libwebp"
2516 libwebp_anim_encoder_deps="libwebp"
2517 libx262_encoder_deps="libx262"
2518 libx264_encoder_deps="libx264"
2519 libx264rgb_encoder_deps="libx264"
2520 libx264rgb_encoder_select="libx264_encoder"
2521 libx265_encoder_deps="libx265"
2522 libxavs_encoder_deps="libxavs"
2523 libxvid_encoder_deps="libxvid"
2524 libutvideo_decoder_deps="libutvideo"
2525 libutvideo_encoder_deps="libutvideo"
2526 libzvbi_teletext_decoder_deps="libzvbi"
2527 nvenc_encoder_deps="nvenc"
2528 nvenc_h264_encoder_deps="nvenc"
2529 nvenc_hevc_encoder_deps="nvenc"
2530
2531 # demuxers / muxers
2532 ac3_demuxer_select="ac3_parser"
2533 asf_demuxer_select="riffdec"
2534 asf_o_demuxer_select="riffdec"
2535 asf_muxer_select="riffenc"
2536 asf_stream_muxer_select="asf_muxer"
2537 avi_demuxer_select="riffdec exif"
2538 avi_muxer_select="riffenc"
2539 avisynth_demuxer_deps="avisynth"
2540 avisynth_demuxer_select="riffdec"
2541 caf_demuxer_select="riffdec"
2542 dash_muxer_select="mp4_muxer"
2543 dirac_demuxer_select="dirac_parser"
2544 dts_demuxer_select="dca_parser"
2545 dtshd_demuxer_select="dca_parser"
2546 dv_demuxer_select="dvprofile"
2547 dv_muxer_select="dvprofile"
2548 dxa_demuxer_select="riffdec"
2549 eac3_demuxer_select="ac3_parser"
2550 f4v_muxer_select="mov_muxer"
2551 flac_demuxer_select="flac_parser"
2552 hds_muxer_select="flv_muxer"
2553 hls_muxer_select="mpegts_muxer"
2554 image2_alias_pix_demuxer_select="image2_demuxer"
2555 image2_brender_pix_demuxer_select="image2_demuxer"
2556 ipod_muxer_select="mov_muxer"
2557 ismv_muxer_select="mov_muxer"
2558 libnut_demuxer_deps="libnut"
2559 libnut_muxer_deps="libnut"
2560 matroska_audio_muxer_select="matroska_muxer"
2561 matroska_demuxer_select="riffdec"
2562 matroska_demuxer_suggest="bzlib lzo zlib"
2563 matroska_muxer_select="riffenc"
2564 mmf_muxer_select="riffenc"
2565 mov_demuxer_select="riffdec"
2566 mov_demuxer_suggest="zlib"
2567 mov_muxer_select="riffenc rtpenc_chain"
2568 mp3_demuxer_select="mpegaudio_parser"
2569 mp4_muxer_select="mov_muxer"
2570 mpegts_muxer_select="adts_muxer latm_muxer"
2571 mpegtsraw_demuxer_select="mpegts_demuxer"
2572 mxf_d10_muxer_select="mxf_muxer"
2573 mxf_opatom_muxer_select="mxf_muxer"
2574 nut_muxer_select="riffenc"
2575 nuv_demuxer_select="riffdec"
2576 oga_muxer_select="ogg_muxer"
2577 ogg_demuxer_select="golomb"
2578 opus_muxer_select="ogg_muxer"
2579 psp_muxer_select="mov_muxer"
2580 rtp_demuxer_select="sdp_demuxer"
2581 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2582 rtsp_demuxer_select="http_protocol rtpdec"
2583 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2584 sap_demuxer_select="sdp_demuxer"
2585 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2586 sdp_demuxer_select="rtpdec"
2587 smoothstreaming_muxer_select="ismv_muxer"
2588 spdif_muxer_select="aac_parser"
2589 spx_muxer_select="ogg_muxer"
2590 tak_demuxer_select="tak_parser"
2591 tg2_muxer_select="mov_muxer"
2592 tgp_muxer_select="mov_muxer"
2593 vobsub_demuxer_select="mpegps_demuxer"
2594 w64_demuxer_select="wav_demuxer"
2595 w64_muxer_select="wav_muxer"
2596 wav_demuxer_select="riffdec"
2597 wav_muxer_select="riffenc"
2598 webm_muxer_select="riffenc"
2599 wtv_demuxer_select="riffdec"
2600 wtv_muxer_select="riffenc"
2601 xmv_demuxer_select="riffdec"
2602 xwma_demuxer_select="riffdec"
2603
2604 # indevs / outdevs
2605 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2606 alsa_outdev_deps="alsa_asoundlib_h"
2607 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2608 avfoundation_indev_select="avfoundation"
2609 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2610 caca_outdev_deps="libcaca"
2611 decklink_outdev_deps="decklink pthreads"
2612 decklink_outdev_extralibs="-lstdc++"
2613 decklink_indev_deps="decklink pthreads"
2614 decklink_indev_extralibs="-lstdc++"
2615 dshow_indev_deps="IBaseFilter"
2616 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2617 dv1394_indev_deps="dv1394"
2618 dv1394_indev_select="dv_demuxer"
2619 fbdev_indev_deps="linux_fb_h"
2620 fbdev_outdev_deps="linux_fb_h"
2621 gdigrab_indev_deps="CreateDIBSection"
2622 gdigrab_indev_extralibs="-lgdi32"
2623 gdigrab_indev_select="bmp_decoder"
2624 iec61883_indev_deps="libiec61883"
2625 jack_indev_deps="jack_jack_h sem_timedwait"
2626 lavfi_indev_deps="avfilter"
2627 libcdio_indev_deps="libcdio"
2628 libdc1394_indev_deps="libdc1394"
2629 libv4l2_indev_deps="libv4l2"
2630 openal_indev_deps="openal"
2631 opengl_outdev_deps="opengl"
2632 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2633 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2634 pulse_indev_deps="libpulse"
2635 pulse_outdev_deps="libpulse"
2636 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2637 qtkit_indev_select="qtkit"
2638 sdl_outdev_deps="sdl"
2639 sndio_indev_deps="sndio_h"
2640 sndio_outdev_deps="sndio_h"
2641 v4l_indev_deps="linux_videodev_h"
2642 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2643 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2644 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2645 vfwcap_indev_extralibs="-lavicap32"
2646 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2647 xv_outdev_extralibs="-lXv -lX11 -lXext"
2648 x11grab_indev_deps="x11grab"
2649 x11grab_xcb_indev_deps="libxcb"
2650
2651 # protocols
2652 bluray_protocol_deps="libbluray"
2653 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2654 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2655 ffrtmpcrypt_protocol_select="tcp_protocol"
2656 ffrtmphttp_protocol_deps="!librtmp_protocol"
2657 ffrtmphttp_protocol_select="http_protocol"
2658 ftp_protocol_select="tcp_protocol"
2659 gopher_protocol_select="network"
2660 http_protocol_select="tcp_protocol"
2661 httpproxy_protocol_select="tcp_protocol"
2662 https_protocol_select="tls_protocol"
2663 icecast_protocol_select="http_protocol"
2664 librtmp_protocol_deps="librtmp"
2665 librtmpe_protocol_deps="librtmp"
2666 librtmps_protocol_deps="librtmp"
2667 librtmpt_protocol_deps="librtmp"
2668 librtmpte_protocol_deps="librtmp"
2669 libsmbclient_protocol_deps="libsmbclient gplv3"
2670 libssh_protocol_deps="libssh"
2671 mmsh_protocol_select="http_protocol"
2672 mmst_protocol_select="network"
2673 rtmp_protocol_deps="!librtmp_protocol"
2674 rtmp_protocol_select="tcp_protocol"
2675 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2676 rtmps_protocol_deps="!librtmp_protocol"
2677 rtmps_protocol_select="tls_protocol"
2678 rtmpt_protocol_select="ffrtmphttp_protocol"
2679 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2680 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2681 rtp_protocol_select="udp_protocol"
2682 sctp_protocol_deps="struct_sctp_event_subscribe"
2683 sctp_protocol_select="network"
2684 srtp_protocol_select="rtp_protocol"
2685 tcp_protocol_select="network"
2686 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2687 tls_gnutls_protocol_select="tcp_protocol"
2688 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2689 tls_openssl_protocol_select="tcp_protocol"
2690 tls_securetransport_protocol_deps="securetransport"
2691 tls_securetransport_protocol_select="tcp_protocol"
2692 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2693 udp_protocol_select="network"
2694 udplite_protocol_select="network"
2695 unix_protocol_deps="sys_un_h"
2696 unix_protocol_select="network"
2697
2698 # filters
2699 amovie_filter_deps="avcodec avformat"
2700 aresample_filter_deps="swresample"
2701 ass_filter_deps="libass"
2702 asyncts_filter_deps="avresample"
2703 atempo_filter_deps="avcodec"
2704 atempo_filter_select="rdft"
2705 azmq_filter_deps="libzmq"
2706 blackframe_filter_deps="gpl"
2707 boxblur_filter_deps="gpl"
2708 bs2b_filter_deps="libbs2b"
2709 colormatrix_filter_deps="gpl"
2710 cover_rect_filter_deps="avcodec avformat gpl"
2711 cropdetect_filter_deps="gpl"
2712 delogo_filter_deps="gpl"
2713 deshake_filter_select="pixelutils"
2714 drawtext_filter_deps="libfreetype"
2715 ebur128_filter_deps="gpl"
2716 eq_filter_deps="gpl"
2717 fftfilt_filter_deps="avcodec"
2718 fftfilt_filter_select="rdft"
2719 flite_filter_deps="libflite"
2720 find_rect_filter_deps="avcodec avformat gpl"
2721 frei0r_filter_deps="frei0r dlopen"
2722 frei0r_src_filter_deps="frei0r dlopen"
2723 fspp_filter_deps="gpl"
2724 geq_filter_deps="gpl"
2725 histeq_filter_deps="gpl"
2726 hqdn3d_filter_deps="gpl"
2727 interlace_filter_deps="gpl"
2728 kerndeint_filter_deps="gpl"
2729 ladspa_filter_deps="ladspa dlopen"
2730 mcdeint_filter_deps="avcodec gpl"
2731 movie_filter_deps="avcodec avformat"
2732 mpdecimate_filter_deps="gpl"
2733 mpdecimate_filter_select="pixelutils"
2734 mptestsrc_filter_deps="gpl"
2735 negate_filter_deps="lut_filter"
2736 perspective_filter_deps="gpl"
2737 pp7_filter_deps="gpl"
2738 ocv_filter_deps="libopencv"
2739 owdenoise_filter_deps="gpl"
2740 pan_filter_deps="swresample"
2741 phase_filter_deps="gpl"
2742 pp_filter_deps="gpl postproc"
2743 pullup_filter_deps="gpl"
2744 removelogo_filter_deps="avcodec avformat swscale"
2745 repeatfields_filter_deps="gpl"
2746 resample_filter_deps="avresample"
2747 sab_filter_deps="gpl swscale"
2748 scale_filter_deps="swscale"
2749 select_filter_select="pixelutils"
2750 smartblur_filter_deps="gpl swscale"
2751 showcqt_filter_deps="avcodec"
2752 showcqt_filter_select="fft"
2753 showspectrum_filter_deps="avcodec"
2754 showspectrum_filter_select="rdft"
2755 spp_filter_deps="gpl avcodec"
2756 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2757 stereo3d_filter_deps="gpl"
2758 subtitles_filter_deps="avformat avcodec libass"
2759 super2xsai_filter_deps="gpl"
2760 tinterlace_filter_deps="gpl"
2761 vidstabdetect_filter_deps="libvidstab"
2762 vidstabtransform_filter_deps="libvidstab"
2763 pixfmts_super2xsai_test_deps="super2xsai_filter"
2764 tinterlace_merge_test_deps="tinterlace_filter"
2765 tinterlace_pad_test_deps="tinterlace_filter"
2766 uspp_filter_deps="gpl avcodec"
2767 zmq_filter_deps="libzmq"
2768 zoompan_filter_deps="swscale"
2769
2770 # examples
2771 avio_reading="avformat avcodec avutil"
2772 avio_list_dir="avformat avutil"
2773 avcodec_example_deps="avcodec avutil"
2774 decoding_encoding_example_deps="avcodec avformat avutil"
2775 demuxing_decoding_example_deps="avcodec avformat avutil"
2776 extract_mvs_example_deps="avcodec avformat avutil"
2777 filter_audio_example_deps="avfilter avutil"
2778 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2779 filtering_video_example_deps="avfilter avcodec avformat avutil"
2780 metadata_example_deps="avformat avutil"
2781 muxing_example_deps="avcodec avformat avutil swscale"
2782 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2783 remuxing_example_deps="avcodec avformat avutil"
2784 resampling_audio_example_deps="avutil swresample"
2785 scaling_video_example_deps="avutil swscale"
2786 transcode_aac_example_deps="avcodec avformat swresample"
2787 transcoding_example_deps="avfilter avcodec avformat avutil"
2788
2789 # libraries, in linking order
2790 avcodec_deps="avutil"
2791 avdevice_deps="avformat avcodec avutil"
2792 avfilter_deps="avutil"
2793 avformat_deps="avcodec avutil"
2794 avresample_deps="avutil"
2795 postproc_deps="avutil gpl"
2796 swresample_deps="avutil"
2797 swscale_deps="avutil"
2798
2799 # programs
2800 ffmpeg_deps="avcodec avfilter avformat swresample"
2801 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2802                null_filter
2803                setpts_filter trim_filter"
2804 ffplay_deps="avcodec avformat swscale swresample sdl"
2805 ffplay_libs='$sdl_libs'
2806 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2807 ffprobe_deps="avcodec avformat"
2808 ffserver_deps="avformat fork sarestart"
2809 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2810
2811 # documentation
2812 podpages_deps="perl"
2813 manpages_deps="perl pod2man"
2814 htmlpages_deps="perl"
2815 htmlpages_deps_any="makeinfo_html texi2html"
2816 txtpages_deps="perl makeinfo"
2817 doc_deps_any="manpages htmlpages podpages txtpages"
2818
2819 # default parameters
2820
2821 logfile="config.log"
2822
2823 # installation paths
2824 prefix_default="/usr/local"
2825 bindir_default='${prefix}/bin'
2826 datadir_default='${prefix}/share/ffmpeg'
2827 docdir_default='${prefix}/share/doc/ffmpeg'
2828 incdir_default='${prefix}/include'
2829 libdir_default='${prefix}/lib'
2830 mandir_default='${prefix}/share/man'
2831
2832 # toolchain
2833 ar_default="ar"
2834 cc_default="gcc"
2835 cxx_default="g++"
2836 host_cc_default="gcc"
2837 cp_f="cp -f"
2838 doxygen_default="doxygen"
2839 install="install"
2840 ln_s="ln -s -f"
2841 nm_default="nm -g"
2842 objformat="elf"
2843 pkg_config_default=pkg-config
2844 ranlib_default="ranlib"
2845 strip_default="strip"
2846 yasmexe_default="yasm"
2847 windres_default="windres"
2848
2849 # OS
2850 target_os_default=$(tolower $(uname -s))
2851 host_os=$target_os_default
2852
2853 # machine
2854 if test "$target_os_default" = aix; then
2855     arch_default=$(uname -p)
2856     strip_default="strip -X32_64"
2857 else
2858     arch_default=$(uname -m)
2859 fi
2860 cpu="generic"
2861 intrinsics="none"
2862
2863 # configurable options
2864 enable $PROGRAM_LIST
2865 enable $DOCUMENT_LIST
2866 enable $EXAMPLE_LIST
2867 enable $(filter_out avresample $LIBRARY_LIST)
2868 enable stripping
2869
2870 enable asm
2871 enable debug
2872 enable doc
2873 enable faan faandct faanidct
2874 enable optimizations
2875 enable runtime_cpudetect
2876 enable safe_bitstream_reader
2877 enable static
2878 enable swscale_alpha
2879 enable valgrind_backtrace
2880
2881 sws_max_filter_size_default=256
2882 set_default sws_max_filter_size
2883
2884 # Enable hwaccels by default.
2885 enable d3d11va dxva2 vaapi vda vdpau xvmc
2886 enable xlib
2887
2888 # build settings
2889 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2890 LIBPREF="lib"
2891 LIBSUF=".a"
2892 FULLNAME='$(NAME)$(BUILDSUF)'
2893 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2894 SLIBPREF="lib"
2895 SLIBSUF=".so"
2896 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2897 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2898 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2899 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2900 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2901 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2902
2903 asflags_filter=echo
2904 cflags_filter=echo
2905 ldflags_filter=echo
2906
2907 AS_C='-c'
2908 AS_O='-o $@'
2909 CC_C='-c'
2910 CC_E='-E -o $@'
2911 CC_O='-o $@'
2912 CXX_C='-c'
2913 CXX_O='-o $@'
2914 LD_O='-o $@'
2915 LD_LIB='-l%'
2916 LD_PATH='-L'
2917 HOSTCC_C='-c'
2918 HOSTCC_E='-E -o $@'
2919 HOSTCC_O='-o $@'
2920 HOSTLD_O='-o $@'
2921
2922 host_libs='-lm'
2923 host_cflags_filter=echo
2924 host_ldflags_filter=echo
2925
2926 target_path='$(CURDIR)'
2927
2928 # since the object filename is not given with the -MM flag, the compiler
2929 # is only able to print the basename, and we must add the path ourselves
2930 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2931 DEPFLAGS='-MM'
2932
2933 # find source path
2934 if test -f configure; then
2935     source_path=.
2936 else
2937     source_path=$(cd $(dirname "$0"); pwd)
2938     echo "$source_path" | grep -q '[[:blank:]]' &&
2939         die "Out of tree builds are impossible with whitespace in source path."
2940     test -e "$source_path/config.h" &&
2941         die "Out of tree builds are impossible with config.h in source dir."
2942 fi
2943
2944 for v in "$@"; do
2945     r=${v#*=}
2946     l=${v%"$r"}
2947     r=$(sh_quote "$r")
2948     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2949 done
2950
2951 find_things(){
2952     thing=$1
2953     pattern=$2
2954     file=$source_path/$3
2955     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2956 }
2957
2958 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2959 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2960 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2961 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2962 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2963 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2964 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2965 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2966 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2967 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2968 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2969
2970 ALL_COMPONENTS="
2971     $BSF_LIST
2972     $DECODER_LIST
2973     $DEMUXER_LIST
2974     $ENCODER_LIST
2975     $FILTER_LIST
2976     $HWACCEL_LIST
2977     $INDEV_LIST
2978     $MUXER_LIST
2979     $OUTDEV_LIST
2980     $PARSER_LIST
2981     $PROTOCOL_LIST
2982 "
2983
2984 for n in $COMPONENT_LIST; do
2985     v=$(toupper ${n%s})_LIST
2986     eval enable \$$v
2987     eval ${n}_if_any="\$$v"
2988 done
2989
2990 enable $ARCH_EXT_LIST
2991
2992 die_unknown(){
2993     echo "Unknown option \"$1\"."
2994     echo "See $0 --help for available options."
2995     exit 1
2996 }
2997
2998 print_3_columns() {
2999     cat | tr ' ' '\n' | sort | pr -r -3 -t
3000 }
3001
3002 show_list() {
3003     suffix=_$1
3004     shift
3005     echo $* | sed s/$suffix//g | print_3_columns
3006     exit 0
3007 }
3008
3009 rand_list(){
3010     IFS=', '
3011     set -- $*
3012     unset IFS
3013     for thing; do
3014         comp=${thing%:*}
3015         prob=${thing#$comp}
3016         prob=${prob#:}
3017         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3018         echo "prob ${prob:-0.5}"
3019         printf '%s\n' $comp
3020     done
3021 }
3022
3023 do_random(){
3024     action=$1
3025     shift
3026     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3027     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3028 }
3029
3030 for opt do
3031     optval="${opt#*=}"
3032     case "$opt" in
3033         --extra-ldflags=*)
3034             add_ldflags $optval
3035         ;;
3036         --extra-ldexeflags=*)
3037             add_ldexeflags $optval
3038         ;;
3039         --extra-ldlibflags=*)
3040             add_ldlibflags $optval
3041         ;;
3042         --extra-libs=*)
3043             add_extralibs $optval
3044         ;;
3045         --disable-devices)
3046             disable $INDEV_LIST $OUTDEV_LIST
3047         ;;
3048         --enable-debug=*)
3049             debuglevel="$optval"
3050         ;;
3051         --disable-programs)
3052             disable $PROGRAM_LIST
3053         ;;
3054         --disable-everything)
3055             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3056         ;;
3057         --disable-all)
3058             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3059             disable $LIBRARY_LIST $PROGRAM_LIST doc
3060         ;;
3061         --enable-random|--disable-random)
3062             action=${opt%%-random}
3063             do_random ${action#--} $COMPONENT_LIST
3064         ;;
3065         --enable-random=*|--disable-random=*)
3066             action=${opt%%-random=*}
3067             do_random ${action#--} $optval
3068         ;;
3069         --enable-*=*|--disable-*=*)
3070             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3071             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3072             eval list=\$$(toupper $thing)_LIST
3073             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3074             list=$(filter "$name" $list)
3075             [ "$list" = "" ] && warn "Option $opt did not match anything"
3076             $action $list
3077         ;;
3078         --enable-?*|--disable-?*)
3079             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3080             if is_in $option $COMPONENT_LIST; then
3081                 test $action = disable && action=unset
3082                 eval $action \$$(toupper ${option%s})_LIST
3083             elif is_in $option $CMDLINE_SELECT; then
3084                 $action $option
3085             else
3086                 die_unknown $opt
3087             fi
3088         ;;
3089         --list-*)
3090             NAME="${opt#--list-}"
3091             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3092             NAME=${NAME%s}
3093             eval show_list $NAME \$$(toupper $NAME)_LIST
3094         ;;
3095         --help|-h) show_help
3096         ;;
3097         --fatal-warnings) enable fatal_warnings
3098         ;;
3099         *)
3100             optname="${opt%%=*}"
3101             optname="${optname#--}"
3102             optname=$(echo "$optname" | sed 's/-/_/g')
3103             if is_in $optname $CMDLINE_SET; then
3104                 eval $optname='$optval'
3105             elif is_in $optname $CMDLINE_APPEND; then
3106                 append $optname "$optval"
3107             else
3108                 die_unknown $opt
3109             fi
3110         ;;
3111     esac
3112 done
3113
3114 for e in $env; do
3115     eval "export $e"
3116 done
3117
3118 disabled logging && logfile=/dev/null
3119
3120 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3121 set >> $logfile
3122
3123 test -n "$valgrind" && toolchain="valgrind-memcheck"
3124
3125 case "$toolchain" in
3126     clang-asan)
3127         cc_default="clang"
3128         add_cflags  -fsanitize=address
3129         add_ldflags -fsanitize=address
3130     ;;
3131     clang-tsan)
3132         cc_default="clang"
3133         add_cflags  -fsanitize=thread -pie
3134         add_ldflags -fsanitize=thread -pie
3135     ;;
3136     clang-usan)
3137         cc_default="clang"
3138         add_cflags  -fsanitize=undefined
3139         add_ldflags -fsanitize=undefined
3140     ;;
3141     gcc-asan)
3142         cc_default="gcc"
3143         add_cflags  -fsanitize=address
3144         add_ldflags -fsanitize=address
3145     ;;
3146     gcc-tsan)
3147         cc_default="gcc"
3148         add_cflags  -fsanitize=thread -pie -fPIC
3149         add_ldflags -fsanitize=thread -pie -fPIC
3150     ;;
3151     gcc-usan)
3152         cc_default="gcc"
3153         add_cflags  -fsanitize=undefined
3154         add_ldflags -fsanitize=undefined
3155     ;;
3156     valgrind-massif)
3157         target_exec_default=${valgrind:-"valgrind"}
3158         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"
3159     ;;
3160     valgrind-memcheck)
3161         target_exec_default=${valgrind:-"valgrind"}
3162         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3163     ;;
3164     msvc)
3165         # Check whether the current MSVC version needs the C99 converter.
3166         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3167         # support enough of C99 to build ffmpeg. Default to the new
3168         # behaviour if the regexp was unable to match anything, since this
3169         # successfully parses the version number of existing supported
3170         # versions that require the converter (MSVC 2010 and 2012).
3171         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3172         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3173             cc_default="cl"
3174         else
3175             cc_default="c99wrap cl"
3176         fi
3177         ld_default="link"
3178         nm_default="dumpbin -symbols"
3179         ar_default="lib"
3180         target_os_default="win32"
3181         # Use a relative path for TMPDIR. This makes sure all the
3182         # ffconf temp files are written with a relative path, avoiding
3183         # issues with msys/win32 path conversion for MSVC parameters
3184         # such as -Fo<file> or -out:<file>.
3185         TMPDIR=.
3186     ;;
3187     icl)
3188         cc_default="icl"
3189         ld_default="xilink"
3190         nm_default="dumpbin -symbols"
3191         ar_default="xilib"
3192         target_os_default="win32"
3193         TMPDIR=.
3194     ;;
3195     gcov)
3196         add_cflags  -fprofile-arcs -ftest-coverage
3197         add_ldflags -fprofile-arcs -ftest-coverage
3198     ;;
3199     hardened)
3200         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3201         add_cflags   -fno-strict-overflow -fstack-protector-all
3202         add_ldflags  -Wl,-z,relro -Wl,-z,now
3203     ;;
3204     ?*)
3205         die "Unknown toolchain $toolchain"
3206     ;;
3207 esac
3208
3209 test -n "$cross_prefix" && enable cross_compile
3210
3211 if enabled cross_compile; then
3212     test -n "$arch" && test -n "$target_os" ||
3213         die "Must specify target arch and OS when cross-compiling"
3214 fi
3215
3216 ar_default="${cross_prefix}${ar_default}"
3217 cc_default="${cross_prefix}${cc_default}"
3218 cxx_default="${cross_prefix}${cxx_default}"
3219 nm_default="${cross_prefix}${nm_default}"
3220 pkg_config_default="${cross_prefix}${pkg_config_default}"
3221 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3222     ranlib_default="${cross_prefix}${ranlib_default} -D"
3223 else
3224     ranlib_default="${cross_prefix}${ranlib_default}"
3225 fi
3226 strip_default="${cross_prefix}${strip_default}"
3227 windres_default="${cross_prefix}${windres_default}"
3228
3229 sysinclude_default="${sysroot}/usr/include"
3230
3231 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3232     target_exec target_os yasmexe
3233 enabled cross_compile || host_cc_default=$cc
3234 set_default host_cc
3235
3236 pkg_config_fail_message=""
3237 if ! $pkg_config --version >/dev/null 2>&1; then
3238     warn "$pkg_config not found, library detection may fail."
3239     pkg_config=false
3240 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3241     pkg_config_fail_message="
3242 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3243 fi
3244
3245 if test $doxygen != $doxygen_default && \
3246   ! $doxygen --version >/dev/null 2>&1; then
3247     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3248 fi
3249
3250 exesuf() {
3251     case $1 in
3252         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3253     esac
3254 }
3255
3256 EXESUF=$(exesuf $target_os)
3257 HOSTEXESUF=$(exesuf $host_os)
3258
3259 # set temporary file name
3260 : ${TMPDIR:=$TEMPDIR}
3261 : ${TMPDIR:=$TMP}
3262 : ${TMPDIR:=/tmp}
3263
3264 if [ -n "$tempprefix" ] ; then
3265     mktemp(){
3266         echo $tempprefix.${HOSTNAME}.${UID}
3267     }
3268 elif ! check_cmd mktemp -u XXXXXX; then
3269     # simple replacement for missing mktemp
3270     # NOT SAFE FOR GENERAL USE
3271     mktemp(){
3272         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3273     }
3274 fi
3275
3276 tmpfile(){
3277     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3278         (set -C; exec > $tmp) 2>/dev/null ||
3279         die "Unable to create temporary file in $TMPDIR."
3280     append TMPFILES $tmp
3281     eval $1=$tmp
3282 }
3283
3284 trap 'rm -f -- $TMPFILES' EXIT
3285
3286 tmpfile TMPASM .asm
3287 tmpfile TMPC   .c
3288 tmpfile TMPCPP .cpp
3289 tmpfile TMPE   $EXESUF
3290 tmpfile TMPH   .h
3291 tmpfile TMPM   .m
3292 tmpfile TMPO   .o
3293 tmpfile TMPS   .S
3294 tmpfile TMPSH  .sh
3295 tmpfile TMPV   .ver
3296
3297 unset -f mktemp
3298
3299 chmod +x $TMPE
3300
3301 # make sure we can execute files in $TMPDIR
3302 cat > $TMPSH 2>> $logfile <<EOF
3303 #! /bin/sh
3304 EOF
3305 chmod +x $TMPSH >> $logfile 2>&1
3306 if ! $TMPSH >> $logfile 2>&1; then
3307     cat <<EOF
3308 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3309 variable to another directory and make sure that it is not mounted noexec.
3310 EOF
3311     die "Sanity test failed."
3312 fi
3313
3314 armasm_flags(){
3315     for flag; do
3316         case $flag in
3317             # Filter out MSVC cl.exe options from cflags that shouldn't
3318             # be passed to gas-preprocessor
3319             -M[TD]*)                                            ;;
3320             *)                  echo $flag                      ;;
3321         esac
3322    done
3323 }
3324
3325 ccc_flags(){
3326     for flag; do
3327         case $flag in
3328             -std=c99)           echo -c99                       ;;
3329             -mcpu=*)            echo -arch ${flag#*=}           ;;
3330             -mieee)             echo -ieee                      ;;
3331             -O*|-fast)          echo $flag                      ;;
3332             -fno-math-errno)    echo -assume nomath_errno       ;;
3333             -g)                 echo -g3                        ;;
3334             -Wall)              echo -msg_enable level2         ;;
3335             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3336             -Wl,*)              echo $flag                      ;;
3337             -f*|-W*)                                            ;;
3338             *)                  echo $flag                      ;;
3339         esac
3340    done
3341 }
3342
3343 cparser_flags(){
3344     for flag; do
3345         case $flag in
3346             -Wno-switch)             echo -Wno-switch-enum ;;
3347             -Wno-format-zero-length) ;;
3348             -Wdisabled-optimization) ;;
3349             -Wno-pointer-sign)       echo -Wno-other ;;
3350             *)                       echo $flag ;;
3351         esac
3352     done
3353 }
3354
3355 msvc_common_flags(){
3356     for flag; do
3357         case $flag in
3358             # In addition to specifying certain flags under the compiler
3359             # specific filters, they must be specified here as well or else the
3360             # generic catch all at the bottom will print the original flag.
3361             -Wall)                ;;
3362             -std=c99)             ;;
3363             # Common flags
3364             -fomit-frame-pointer) ;;
3365             -g)                   echo -Z7 ;;
3366             -fno-math-errno)      ;;
3367             -fno-common)          ;;
3368             -fno-signed-zeros)    ;;
3369             -fPIC)                ;;
3370             -mthumb)              ;;
3371             -march=*)             ;;
3372             -lz)                  echo zlib.lib ;;
3373             -lavifil32)           echo vfw32.lib ;;
3374             -lavicap32)           echo vfw32.lib user32.lib ;;
3375             -l*)                  echo ${flag#-l}.lib ;;
3376             -L*)                  echo -libpath:${flag#-L} ;;
3377             *)                    echo $flag ;;
3378         esac
3379     done
3380 }
3381
3382 msvc_flags(){
3383     msvc_common_flags "$@"
3384     for flag; do
3385         case $flag in
3386             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3387                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3388                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3389                                        -wd4307 \
3390                                        -wd4273 -wd4554 -wd4701 ;;
3391         esac
3392     done
3393 }
3394
3395 icl_flags(){
3396     msvc_common_flags "$@"
3397     for flag; do
3398         case $flag in
3399             # Despite what Intel's documentation says -Wall, which is supported
3400             # on Windows, does enable remarks so disable them here.
3401             -Wall)                echo $flag -Qdiag-disable:remark ;;
3402             -std=c99)             echo -Qstd=c99 ;;
3403             -flto)                echo -ipo ;;
3404         esac
3405     done
3406 }
3407
3408 icc_flags(){
3409     for flag; do
3410         case $flag in
3411             -flto)                echo -ipo ;;
3412             *)                    echo $flag ;;
3413         esac
3414     done
3415 }
3416
3417 pgi_flags(){
3418     for flag; do
3419         case $flag in
3420             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3421             -fomit-frame-pointer) echo -Mnoframe ;;
3422             -g)                   echo -gopt ;;
3423             *)                    echo $flag ;;
3424         esac
3425     done
3426 }
3427
3428 suncc_flags(){
3429     for flag; do
3430         case $flag in
3431             -march=*|-mcpu=*)
3432                 case "${flag#*=}" in
3433                     native)                   echo -xtarget=native       ;;
3434                     v9|niagara)               echo -xarch=sparc          ;;
3435                     ultrasparc)               echo -xarch=sparcvis       ;;
3436                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3437                     i586|pentium)             echo -xchip=pentium        ;;
3438                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3439                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3440                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3441                     pentium4*)          echo -xtarget=pentium4           ;;
3442                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3443                     *-sse3)             echo -xarch=sse3                 ;;
3444                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3445                     bonnell)                   echo -xarch=ssse3         ;;
3446                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3447                     westmere)                  echo -xtarget=westmere    ;;
3448                     silvermont)                echo -xarch=sse4_2        ;;
3449                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3450                     core-avx*|ivybridge|haswell|broadwell)
3451                                                echo -xarch=avx           ;;
3452                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3453                     btver1)                    echo -xarch=amdsse4a      ;;
3454                     btver2|bdver*)             echo -xarch=avx           ;;
3455                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3456                     k8|opteron|athlon64|athlon-fx)
3457                                                echo -xarch=sse2a         ;;
3458                     athlon*)                   echo -xarch=pentium_proa  ;;
3459                 esac
3460                 ;;
3461             -std=c99)             echo -xc99              ;;
3462             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3463             -fPIC)                echo -KPIC -xcode=pic32 ;;
3464             -W*,*)                echo $flag              ;;
3465             -f*-*|-W*|-mimpure-text)                      ;;
3466             -shared)              echo -G                 ;;
3467             *)                    echo $flag              ;;
3468         esac
3469     done
3470 }
3471
3472 tms470_flags(){
3473     for flag; do
3474         case $flag in
3475             -march=*|-mcpu=*)
3476                 case "${flag#*=}" in
3477                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3478                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3479                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3480                     armv6*|arm11*)          echo -mv=6   ;;
3481                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3482                                             echo -mv=5e  ;;
3483                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3484                 esac
3485                 ;;
3486             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3487             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3488             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3489             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3490             -msoft-float)   echo --float_support=vfplib       ;;
3491             -O[0-3]|-mf=*)  echo $flag                        ;;
3492             -g)             echo -g -mn                       ;;
3493             -pds=*)         echo $flag                        ;;
3494             -D*|-I*)        echo $flag                        ;;
3495             --gcc|--abi=*)  echo $flag                        ;;
3496             -me)            echo $flag                        ;;
3497         esac
3498     done
3499 }
3500
3501 probe_cc(){
3502     pfx=$1
3503     _cc=$2
3504
3505     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3506     unset _ld_o _ldflags _ld_lib _ld_path
3507     unset _depflags _DEPCMD _DEPFLAGS
3508     _flags_filter=echo
3509
3510     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3511         true # no-op to avoid reading stdin in following checks
3512     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3513         _type=llvm_gcc
3514         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3515         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3516         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3517         _cflags_speed='-O3'
3518         _cflags_size='-Os'
3519     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3520         _type=gcc
3521         gcc_version=$($_cc --version | head -n1)
3522         gcc_basever=$($_cc -dumpversion)
3523         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3524         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3525         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3526         if ! $_cc -dumpversion | grep -q '^2\.'; then
3527             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3528         fi
3529         _cflags_speed='-O3'
3530         _cflags_size='-Os'
3531     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3532         _type=icc
3533         _ident=$($_cc --version | head -n1)
3534         _depflags='-MMD'
3535         _cflags_speed='-O3'
3536         _cflags_size='-Os'
3537         _cflags_noopt='-O1'
3538         _flags_filter=icc_flags
3539     elif $_cc -v 2>&1 | grep -q xlc; then
3540         _type=xlc
3541         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3542         _cflags_speed='-O5'
3543         _cflags_size='-O5 -qcompact'
3544     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3545         _type=ccc
3546         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3547         _DEPFLAGS='-M'
3548         _cflags_speed='-fast'
3549         _cflags_size='-O1'
3550         _flags_filter=ccc_flags
3551     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3552         test -d "$sysroot" || die "No valid sysroot specified."
3553         _type=armcc
3554         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3555         armcc_conf="$PWD/armcc.conf"
3556         $_cc --arm_linux_configure                 \
3557              --arm_linux_config_file="$armcc_conf" \
3558              --configure_sysroot="$sysroot"        \
3559              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3560              die "Error creating armcc configuration file."
3561         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3562         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3563         as_default="${cross_prefix}gcc"
3564         _depflags='-MMD'
3565         _cflags_speed='-O3'
3566         _cflags_size='-Os'
3567     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3568         _type=tms470
3569         _ident=$($_cc -version | head -n1 | tr -s ' ')
3570         _flags='--gcc --abi=eabi -me'
3571         _cc_e='-ppl -fe=$@'
3572         _cc_o='-fe=$@'
3573         _depflags='-ppa -ppd=$(@:.o=.d)'
3574         _cflags_speed='-O3 -mf=5'
3575         _cflags_size='-O3 -mf=2'
3576         _flags_filter=tms470_flags
3577     elif $_cc -v 2>&1 | grep -q clang; then
3578         _type=clang
3579         _ident=$($_cc --version | head -n1)
3580         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3581         _cflags_speed='-O3'
3582         _cflags_size='-Os'
3583     elif $_cc -V 2>&1 | grep -q Sun; then
3584         _type=suncc
3585         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3586         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3587         _DEPFLAGS='-xM1 -xc99'
3588         _ldflags='-std=c99'
3589         _cflags_speed='-O5'
3590         _cflags_size='-O5 -xspace'
3591         _flags_filter=suncc_flags
3592     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3593         _type=pathscale
3594         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3595         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3596         _cflags_speed='-O2'
3597         _cflags_size='-Os'
3598         _flags_filter='filter_out -Wdisabled-optimization'
3599     elif $_cc -v 2>&1 | grep -q Open64; then
3600         _type=open64
3601         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3602         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3603         _cflags_speed='-O2'
3604         _cflags_size='-Os'
3605         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3606     elif $_cc -V 2>&1 | grep -q Portland; then
3607         _type=pgi
3608         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3609         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3610         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3611         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3612         _cflags_noopt="-O"
3613         _flags_filter=pgi_flags
3614     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3615         _type=armasm
3616         _ident=$($_cc | head -n1)
3617         # 4509: "This form of conditional instruction is deprecated"
3618         _flags="-nologo -ignore 4509"
3619         _flags_filter=armasm_flags
3620     elif $_cc 2>&1 | grep -q Intel; then
3621         _type=icl
3622         _ident=$($_cc 2>&1 | head -n1)
3623         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3624         # Not only is O3 broken on 13.x+ but it is slower on all previous
3625         # versions (tested) as well.
3626         _cflags_speed="-O2"
3627         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3628         if $_cc 2>&1 | grep -q Linker; then
3629             _ld_o='-out:$@'
3630         else
3631             _ld_o='-Fe$@'
3632         fi
3633         _cc_o='-Fo$@'
3634         _cc_e='-P'
3635         _flags_filter=icl_flags
3636         _ld_lib='lib%.a'
3637         _ld_path='-libpath:'
3638         # -Qdiag-error to make icl error when seeing certain unknown arguments
3639         _flags='-nologo -Qdiag-error:4044,10157'
3640         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3641         # with MSVC which enables it by default.
3642         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3643         disable stripping
3644     elif $_cc 2>&1 | grep -q Microsoft; then
3645         _type=msvc
3646         _ident=$($_cc 2>&1 | head -n1)
3647         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3648         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3649         _cflags_speed="-O2"
3650         _cflags_size="-O1"
3651         if $_cc 2>&1 | grep -q Linker; then
3652             _ld_o='-out:$@'
3653         else
3654             _ld_o='-Fe$@'
3655         fi
3656         _cc_o='-Fo$@'
3657         _cc_e='-P -Fi$@'
3658         _flags_filter=msvc_flags
3659         _ld_lib='lib%.a'
3660         _ld_path='-libpath:'
3661         _flags='-nologo'
3662         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3663         disable stripping
3664     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3665         _type=cparser
3666         _ident=$($_cc --version | head -n1)
3667         _depflags='-MMD'
3668         _cflags_speed='-O4'
3669         _cflags_size='-O2'
3670         _flags_filter=cparser_flags
3671     fi
3672
3673     eval ${pfx}_type=\$_type
3674     eval ${pfx}_ident=\$_ident
3675 }
3676
3677 set_ccvars(){
3678     eval ${1}_C=\${_cc_c-\${${1}_C}}
3679     eval ${1}_E=\${_cc_e-\${${1}_E}}
3680     eval ${1}_O=\${_cc_o-\${${1}_O}}
3681
3682     if [ -n "$_depflags" ]; then
3683         eval ${1}_DEPFLAGS=\$_depflags
3684     else
3685         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3686         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3687         eval DEP${1}FLAGS=\$_flags
3688     fi
3689 }
3690
3691 probe_cc cc "$cc"
3692 cflags_filter=$_flags_filter
3693 cflags_speed=$_cflags_speed
3694 cflags_size=$_cflags_size
3695 cflags_noopt=$_cflags_noopt
3696 add_cflags $_flags $_cflags
3697 cc_ldflags=$_ldflags
3698 set_ccvars CC
3699
3700 probe_cc hostcc "$host_cc"
3701 host_cflags_filter=$_flags_filter
3702 add_host_cflags  $_flags $_cflags
3703 set_ccvars HOSTCC
3704
3705 test -n "$cc_type" && enable $cc_type ||
3706     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3707
3708 : ${as_default:=$cc}
3709 : ${dep_cc_default:=$cc}
3710 : ${ld_default:=$cc}
3711 : ${host_ld_default:=$host_cc}
3712 set_default ar as dep_cc ld host_ld windres
3713
3714 probe_cc as "$as"
3715 asflags_filter=$_flags_filter
3716 add_asflags $_flags $_cflags
3717 set_ccvars AS
3718
3719 probe_cc ld "$ld"
3720 ldflags_filter=$_flags_filter
3721 add_ldflags $_flags $_ldflags
3722 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3723 LD_O=${_ld_o-$LD_O}
3724 LD_LIB=${_ld_lib-$LD_LIB}
3725 LD_PATH=${_ld_path-$LD_PATH}
3726
3727 probe_cc hostld "$host_ld"
3728 host_ldflags_filter=$_flags_filter
3729 add_host_ldflags $_flags $_ldflags
3730 HOSTLD_O=${_ld_o-$HOSTLD_O}
3731
3732 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3733     probe_cc depcc "$dep_cc"
3734     CCDEP=${_DEPCMD:-$DEPCMD}
3735     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3736     DEPCCFLAGS=$_flags
3737 fi
3738
3739 if $ar 2>&1 | grep -q Microsoft; then
3740     arflags="-nologo"
3741     ar_o='-out:$@'
3742 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3743     arflags="rq"
3744     ar_o='$@'
3745 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3746     arflags='-Xany -r -c'
3747     ar_o='$@'
3748 elif $ar 2>&1 | grep -q "\[D\] "; then
3749     arflags="rcD"
3750     ar_o='$@'
3751 else
3752     arflags="rc"
3753     ar_o='$@'
3754 fi
3755
3756 add_cflags $extra_cflags
3757 add_cxxflags $extra_cxxflags
3758 add_asflags $extra_cflags
3759
3760 if test -n "$sysroot"; then
3761     case "$cc_type" in
3762         gcc|llvm_gcc|clang)
3763             add_cppflags --sysroot="$sysroot"
3764             add_ldflags --sysroot="$sysroot"
3765 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3766             add_cppflags -isysroot "$sysroot"
3767             add_ldflags -isysroot "$sysroot"
3768         ;;
3769         tms470)
3770             add_cppflags -I"$sysinclude"
3771             add_ldflags  --sysroot="$sysroot"
3772         ;;
3773     esac
3774 fi
3775
3776 if test "$cpu" = host; then
3777     enabled cross_compile &&
3778         die "--cpu=host makes no sense when cross-compiling."
3779
3780     case "$cc_type" in
3781         gcc|llvm_gcc)
3782             check_native(){
3783                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3784                 sed -n "/cc1.*$1=/{
3785                             s/.*$1=\\([^ ]*\\).*/\\1/
3786                             p
3787                             q
3788                         }" $TMPE
3789             }
3790             cpu=$(check_native -march || check_native -mcpu)
3791         ;;
3792     esac
3793
3794     test "${cpu:-host}" = host &&
3795         die "--cpu=host not supported with compiler $cc"
3796 fi
3797
3798 # Deal with common $arch aliases
3799 case "$arch" in
3800     aarch64|arm64)
3801         arch="aarch64"
3802     ;;
3803     arm*|iPad*|iPhone*)
3804         arch="arm"
3805     ;;
3806     mips*|IP*)
3807         arch="mips"
3808     ;;
3809     parisc*|hppa*)
3810         arch="parisc"
3811     ;;
3812     "Power Macintosh"|ppc*|powerpc*)
3813         arch="ppc"
3814     ;;
3815     s390|s390x)
3816         arch="s390"
3817     ;;
3818     sh4|sh)
3819         arch="sh4"
3820     ;;
3821     sun4u|sparc*)
3822         arch="sparc"
3823     ;;
3824     tilegx|tile-gx)
3825         arch="tilegx"
3826     ;;
3827     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3828         arch="x86"
3829     ;;
3830 esac
3831
3832 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3833 enable $arch
3834
3835 # Add processor-specific flags
3836 if enabled aarch64; then
3837
3838     case $cpu in
3839         armv*)
3840             cpuflags="-march=$cpu"
3841         ;;
3842         *)
3843             cpuflags="-mcpu=$cpu"
3844         ;;
3845     esac
3846
3847 elif enabled alpha; then
3848
3849     cpuflags="-mcpu=$cpu"
3850
3851 elif enabled arm; then
3852
3853     check_arm_arch() {
3854         check_cpp_condition stddef.h \
3855             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3856             $cpuflags
3857     }
3858
3859     probe_arm_arch() {
3860         if   check_arm_arch 4;        then echo armv4;
3861         elif check_arm_arch 4T;       then echo armv4t;
3862         elif check_arm_arch 5;        then echo armv5;
3863         elif check_arm_arch 5E;       then echo armv5e;
3864         elif check_arm_arch 5T;       then echo armv5t;
3865         elif check_arm_arch 5TE;      then echo armv5te;
3866         elif check_arm_arch 5TEJ;     then echo armv5te;
3867         elif check_arm_arch 6;        then echo armv6;
3868         elif check_arm_arch 6J;       then echo armv6j;
3869         elif check_arm_arch 6K;       then echo armv6k;
3870         elif check_arm_arch 6Z;       then echo armv6z;
3871         elif check_arm_arch 6ZK;      then echo armv6zk;
3872         elif check_arm_arch 6T2;      then echo armv6t2;
3873         elif check_arm_arch 7;        then echo armv7;
3874         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3875         elif check_arm_arch 7S;       then echo armv7-a;
3876         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3877         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3878         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3879         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3880         fi
3881     }
3882
3883     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3884
3885     case $cpu in
3886         armv*)
3887             cpuflags="-march=$cpu"
3888             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3889         ;;
3890         *)
3891             cpuflags="-mcpu=$cpu"
3892             case $cpu in
3893                 cortex-a*)                               subarch=armv7a  ;;
3894                 cortex-r*)                               subarch=armv7r  ;;
3895                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3896                 arm11*)                                  subarch=armv6   ;;
3897                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3898                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3899                 *)                             subarch=$(probe_arm_arch) ;;
3900             esac
3901         ;;
3902     esac
3903
3904     case "$subarch" in
3905         armv5t*)    enable fast_clz                ;;
3906         armv[6-8]*)
3907             enable fast_clz
3908             disabled fast_unaligned || enable fast_unaligned
3909             ;;
3910     esac
3911
3912 elif enabled avr32; then
3913
3914     case $cpu in
3915         ap7[02]0[0-2])
3916             subarch="avr32_ap"
3917             cpuflags="-mpart=$cpu"
3918         ;;
3919         ap)
3920             subarch="avr32_ap"
3921             cpuflags="-march=$cpu"
3922         ;;
3923         uc3[ab]*)
3924             subarch="avr32_uc"
3925             cpuflags="-mcpu=$cpu"
3926         ;;
3927         uc)
3928             subarch="avr32_uc"
3929             cpuflags="-march=$cpu"
3930         ;;
3931     esac
3932
3933 elif enabled bfin; then
3934
3935     cpuflags="-mcpu=$cpu"
3936
3937 elif enabled mips; then
3938
3939     cpuflags="-march=$cpu"
3940
3941     case $cpu in
3942         24kc)
3943             disable mips32r5
3944             disable mips64r6
3945             disable mipsfpu
3946             disable mipsdspr1
3947             disable mipsdspr2
3948             disable msa
3949         ;;
3950         24kf*)
3951             disable mips32r5
3952             disable mips64r6
3953             disable mipsdspr1
3954             disable mipsdspr2
3955             disable msa
3956         ;;
3957         24kec|34kc|1004kc)
3958             disable mips32r5
3959             disable mips64r6
3960             disable mipsfpu
3961             disable mipsdspr2
3962             disable msa
3963         ;;
3964         24kef*|34kf*|1004kf*)
3965             disable mips32r5
3966             disable mips64r6
3967             disable mipsdspr2
3968             disable msa
3969         ;;
3970         74kc)
3971             disable mips32r5
3972             disable mips64r6
3973             disable mipsfpu
3974             disable msa
3975         ;;
3976         74kf)
3977             disable mips32r5
3978             disable mips64r6
3979             disable msa
3980         ;;
3981         p5600)
3982             disable mips64r6
3983             disable mipsdspr1
3984             disable mipsdspr2
3985
3986             check_cflags "-mtune=p5600"
3987         ;;
3988         i6400)
3989             disable mips32r5
3990             disable mipsdspr1
3991             disable mipsdspr2
3992             disable mipsfpu
3993
3994             check_cflags "-mtune=i6400 -mabi=64"
3995             check_ldflags "-mabi=64"
3996         ;;
3997         loongson*)
3998             disable mipsfpu
3999             disable mips32r2
4000             disable mips32r5
4001             disable mips64r6
4002             disable mipsdspr1
4003             disable mipsdspr2
4004             disable msa
4005             enable local_aligned_8 local_aligned_16 local_aligned_32
4006             enable simd_align_16
4007             enable fast_64bit
4008             enable fast_clz
4009             enable fast_cmov
4010             enable fast_unaligned
4011             disable aligned_stack
4012             case $cpu in
4013                 loongson3*)
4014                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4015                 ;;
4016                 loongson2e)
4017                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4018                 ;;
4019                 loongson2f)
4020                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4021                 ;;
4022             esac
4023         ;;
4024         generic)
4025             disable mips32r5
4026             disable mips64r6
4027             disable msa
4028         ;;
4029     esac
4030
4031 elif enabled ppc; then
4032
4033     disable ldbrx
4034
4035     case $(tolower $cpu) in
4036         601|ppc601|powerpc601)
4037             cpuflags="-mcpu=601"
4038             disable altivec
4039         ;;
4040         603*|ppc603*|powerpc603*)
4041             cpuflags="-mcpu=603"
4042             disable altivec
4043         ;;
4044         604*|ppc604*|powerpc604*)
4045             cpuflags="-mcpu=604"
4046             disable altivec
4047         ;;
4048         g3|75*|ppc75*|powerpc75*)
4049             cpuflags="-mcpu=750"
4050             disable altivec
4051         ;;
4052         g4|745*|ppc745*|powerpc745*)
4053             cpuflags="-mcpu=7450"
4054             disable vsx
4055         ;;
4056         74*|ppc74*|powerpc74*)
4057             cpuflags="-mcpu=7400"
4058             disable vsx
4059         ;;
4060         g5|970|ppc970|powerpc970)
4061             cpuflags="-mcpu=970"
4062             disable vsx
4063         ;;
4064         power[3-6]*)
4065             cpuflags="-mcpu=$cpu"
4066             disable vsx
4067         ;;
4068         power[7-8]*)
4069             cpuflags="-mcpu=$cpu"
4070         ;;
4071         cell)
4072             cpuflags="-mcpu=cell"
4073             enable ldbrx
4074             disable vsx
4075         ;;
4076         e500mc)
4077             cpuflags="-mcpu=e500mc"
4078             disable altivec
4079         ;;
4080         e500v2)
4081             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4082             disable altivec
4083             disable dcbzl
4084         ;;
4085         e500)
4086             cpuflags="-mcpu=8540 -mhard-float"
4087             disable altivec
4088             disable dcbzl
4089         ;;
4090     esac
4091
4092 elif enabled sparc; then
4093
4094     case $cpu in
4095         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4096             cpuflags="-mcpu=$cpu"
4097         ;;
4098         ultrasparc*|niagara[234])
4099             cpuflags="-mcpu=$cpu"
4100         ;;
4101     esac
4102
4103 elif enabled x86; then
4104
4105     case $cpu in
4106         i[345]86|pentium)
4107             cpuflags="-march=$cpu"
4108             disable i686
4109             disable mmx
4110         ;;
4111         # targets that do NOT support nopl and conditional mov (cmov)
4112         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4113             cpuflags="-march=$cpu"
4114             disable i686
4115         ;;
4116         # targets that do support nopl and conditional mov (cmov)
4117         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4118         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4119             cpuflags="-march=$cpu"
4120             enable i686
4121             enable fast_cmov
4122         ;;
4123         # targets that do support conditional mov but on which it's slow
4124         pentium4|pentium4m|prescott|nocona)
4125             cpuflags="-march=$cpu"
4126             enable i686
4127             disable fast_cmov
4128         ;;
4129     esac
4130
4131 fi
4132
4133 if [ "$cpu" != generic ]; then
4134     add_cflags  $cpuflags
4135     add_asflags $cpuflags
4136 fi
4137
4138 # compiler sanity check
4139 check_exec <<EOF
4140 int main(void){ return 0; }
4141 EOF
4142 if test "$?" != 0; then
4143     echo "$cc is unable to create an executable file."
4144     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4145         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4146         echo "Only do this if you know what cross compiling means."
4147     fi
4148     die "C compiler test failed."
4149 fi
4150
4151 add_cppflags -D_ISOC99_SOURCE
4152 add_cxxflags -D__STDC_CONSTANT_MACROS
4153 check_cflags -std=c99
4154 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4155 #include <stdlib.h>
4156 EOF
4157 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4158 #include <stdlib.h>
4159 EOF
4160
4161 add_host_cppflags -D_ISOC99_SOURCE
4162 check_host_cflags -std=c99
4163 check_host_cflags -Wall
4164 check_host_cflags -O3
4165
4166 check_64bit(){
4167     arch32=$1
4168     arch64=$2
4169     expr=$3
4170     check_code cc "" "int test[2*($expr) - 1]" &&
4171         subarch=$arch64 || subarch=$arch32
4172 }
4173
4174 case "$arch" in
4175     aarch64|alpha|ia64)
4176         spic=$shared
4177     ;;
4178     mips)
4179         check_64bit mips mips64 '_MIPS_SIM > 1'
4180         spic=$shared
4181     ;;
4182     parisc)
4183         check_64bit parisc parisc64 'sizeof(void *) > 4'
4184         spic=$shared
4185     ;;
4186     ppc)
4187         check_64bit ppc ppc64 'sizeof(void *) > 4'
4188         spic=$shared
4189     ;;
4190     s390)
4191         check_64bit s390 s390x 'sizeof(void *) > 4'
4192         spic=$shared
4193     ;;
4194     sparc)
4195         check_64bit sparc sparc64 'sizeof(void *) > 4'
4196         spic=$shared
4197     ;;
4198     x86)
4199         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4200         # Treat x32 as x64 for now. Note it also needs spic=$shared
4201         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4202             subarch=x86_64
4203         if test "$subarch" = "x86_64"; then
4204             spic=$shared
4205         fi
4206     ;;
4207     ppc)
4208         check_cc <<EOF && subarch="ppc64"
4209         int test[(int)sizeof(char*) - 7];
4210 EOF
4211     ;;
4212 esac
4213
4214 enable $subarch
4215 enabled spic && enable_weak pic
4216
4217 # OS specific
4218 case $target_os in
4219     aix)
4220         SHFLAGS=-shared
4221         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4222         enabled shared && add_ldflags -Wl,-brtl
4223         ;;
4224     android)
4225         disable symver
4226         enable section_data_rel_ro
4227         SLIB_INSTALL_NAME='$(SLIBNAME)'
4228         SLIB_INSTALL_LINKS=
4229         # soname not set on purpose
4230         SHFLAGS=-shared
4231         ;;
4232     haiku)
4233         prefix_default="/boot/common"
4234         network_extralibs="-lnetwork"
4235         host_libs=
4236         ;;
4237     sunos)
4238         SHFLAGS='-shared -Wl,-h,$$(@F)'
4239         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4240         network_extralibs="-lsocket -lnsl"
4241         add_cppflags -D__EXTENSIONS__
4242         # When using suncc to build, the Solaris linker will mark
4243         # an executable with each instruction set encountered by
4244         # the Solaris assembler.  As our libraries contain their own
4245         # guards for processor-specific code, instead suppress
4246         # generation of the HWCAPS ELF section on Solaris x86 only.
4247         enabled_all suncc x86 &&
4248             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4249             add_ldflags -Wl,-M,mapfile
4250         nm_default='nm -P -g'
4251         ;;
4252     netbsd)
4253         disable symver
4254         oss_indev_extralibs="-lossaudio"
4255         oss_outdev_extralibs="-lossaudio"
4256         enabled gcc || check_ldflags -Wl,-zmuldefs
4257         ;;
4258     openbsd|bitrig)
4259         disable symver
4260         SHFLAGS='-shared'
4261         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4262         SLIB_INSTALL_LINKS=
4263         oss_indev_extralibs="-lossaudio"
4264         oss_outdev_extralibs="-lossaudio"
4265         ;;
4266     dragonfly)
4267         disable symver
4268         ;;
4269     freebsd)
4270         ;;
4271     bsd/os)
4272         add_extralibs -lpoll -lgnugetopt
4273         strip="strip -d"
4274         ;;
4275     darwin)
4276         enabled ppc && add_asflags -force_cpusubtype_ALL
4277         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4278         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4279         strip="${strip} -x"
4280         add_ldflags -Wl,-dynamic,-search_paths_first
4281         SLIBSUF=".dylib"
4282         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4283         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4284         objformat="macho"
4285         enabled x86_64 && objformat="macho64"
4286         enabled_any pic shared x86_64 ||
4287             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4288         ;;
4289     mingw32*)
4290         if test $target_os = "mingw32ce"; then
4291             disable network
4292         else
4293             target_os=mingw32
4294         fi
4295         LIBTARGET=i386
4296         if enabled x86_64; then
4297             LIBTARGET="i386:x86-64"
4298         elif enabled arm; then
4299             LIBTARGET=arm-wince
4300         fi
4301         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4302         check_ldflags -Wl,--nxcompat
4303         check_ldflags -Wl,--dynamicbase
4304         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4305         shlibdir_default="$bindir_default"
4306         SLIBPREF=""
4307         SLIBSUF=".dll"
4308         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4309         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4310         dlltool="${cross_prefix}dlltool"
4311         if check_cmd lib.exe -list; then
4312             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4313             if enabled x86_64; then
4314                 LIBTARGET=x64
4315             fi
4316         elif check_cmd $dlltool --version; then
4317             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4318         fi
4319         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4320         SLIB_INSTALL_LINKS=
4321         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4322         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4323         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4324         objformat="win32"
4325         ranlib=:
4326         enable dos_paths
4327         ;;
4328     win32|win64)
4329         disable symver
4330         if enabled shared; then
4331             # Link to the import library instead of the normal static library
4332             # for shared libs.
4333             LD_LIB='%.lib'
4334             # Cannot build both shared and static libs with MSVC or icl.
4335             disable static
4336         fi
4337         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4338         shlibdir_default="$bindir_default"
4339         SLIBPREF=""
4340         SLIBSUF=".dll"
4341         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4342         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4343         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4344         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4345         SLIB_INSTALL_LINKS=
4346         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4347         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4348         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4349         objformat="win32"
4350         ranlib=:
4351         enable dos_paths
4352         ;;
4353     cygwin*)
4354         target_os=cygwin
4355         shlibdir_default="$bindir_default"
4356         SLIBPREF="cyg"
4357         SLIBSUF=".dll"
4358         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4359         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4360         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4361         SLIB_INSTALL_LINKS=
4362         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4363         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4364         objformat="win32"
4365         enable dos_paths
4366         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4367         ;;
4368     *-dos|freedos|opendos)
4369         network_extralibs="-lsocket"
4370         objformat="coff"
4371         enable dos_paths
4372         add_cppflags -U__STRICT_ANSI__
4373         ;;
4374     linux)
4375         enable dv1394
4376         enable section_data_rel_ro
4377         ;;
4378     irix*)
4379         target_os=irix
4380         ranlib="echo ignoring ranlib"
4381         ;;
4382     os/2*)
4383         strip="lxlite -CS"
4384         ln_s="cp -f"
4385         objformat="aout"
4386         add_cppflags -D_GNU_SOURCE
4387         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4388         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4389         LIBSUF="_s.a"
4390         SLIBPREF=""
4391         SLIBSUF=".dll"
4392         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4393         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4394         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4395             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4396             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4397             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4398             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4399         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4400             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4401         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4402         enable dos_paths
4403         enable_weak os2threads
4404         ;;
4405     gnu/kfreebsd)
4406         add_cppflags -D_BSD_SOURCE
4407         ;;
4408     gnu)
4409         ;;
4410     qnx)
4411         add_cppflags -D_QNX_SOURCE
4412         network_extralibs="-lsocket"
4413         ;;
4414     symbian)
4415         SLIBSUF=".dll"
4416         enable dos_paths
4417         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4418         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4419         add_ldflags -Wl,--target1-abs,--no-undefined \
4420                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4421                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4422         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4423                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4424                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4425         ;;
4426     osf1)
4427         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4428         ;;
4429     minix)
4430         ;;
4431     plan9)
4432         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4433                      -D_REENTRANT_SOURCE        \
4434                      -D_RESEARCH_SOURCE         \
4435                      -DFD_SETSIZE=96            \
4436                      -DHAVE_SOCK_OPTS
4437         add_compat strtod.o strtod=avpriv_strtod
4438         network_extralibs='-lbsd'
4439         exeobjs=compat/plan9/main.o
4440         disable ffserver
4441         cp_f='cp'
4442         ;;
4443     none)
4444         ;;
4445     *)
4446         die "Unknown OS '$target_os'."
4447         ;;
4448 esac
4449
4450 # determine libc flavour
4451
4452 probe_libc(){
4453     pfx=$1
4454     pfx_no_=${pfx%_}
4455     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4456     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4457         eval ${pfx}libc_type=uclibc
4458         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4459     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4460         eval ${pfx}libc_type=glibc
4461         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4462     # MinGW headers can be installed on Cygwin, so check for newlib first.
4463     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4464         eval ${pfx}libc_type=newlib
4465         add_${pfx}cppflags -U__STRICT_ANSI__
4466     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4467     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4468         eval ${pfx}libc_type=mingw64
4469         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4470             add_compat msvcrt/snprintf.o
4471             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4472         fi
4473         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4474         eval test \$${pfx_no_}cc_type = "gcc" &&
4475             add_${pfx}cppflags -D__printf__=__gnu_printf__
4476     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4477          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4478         eval ${pfx}libc_type=mingw32
4479         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4480             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4481             die "ERROR: MinGW32 runtime version must be >= 3.15."
4482         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4483         eval test \$${pfx_no_}cc_type = "gcc" &&
4484             add_${pfx}cppflags -D__printf__=__gnu_printf__
4485     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4486         eval ${pfx}libc_type=msvcrt
4487         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4488             if [ "$pfx" = host_ ]; then
4489                 add_host_cppflags -Dsnprintf=_snprintf
4490             else
4491                 add_compat strtod.o strtod=avpriv_strtod
4492                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4493                                              _snprintf=avpriv_snprintf  \
4494                                              vsnprintf=avpriv_vsnprintf
4495             fi
4496         fi
4497         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4498         # 0x601 by default unless something else is set by the user.
4499         # This can easily lead to us detecting functions only present
4500         # in such new versions and producing binaries requiring windows 7.0.
4501         # Therefore explicitly set the default to XP unless the user has
4502         # set something else on the command line.
4503         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4504             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4505     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4506         eval ${pfx}libc_type=klibc
4507     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4508         eval ${pfx}libc_type=bionic
4509     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4510         eval ${pfx}libc_type=solaris
4511         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4512     fi
4513     check_${pfx}cc <<EOF
4514 #include <time.h>
4515 void *v = localtime_r;
4516 EOF
4517 test "$?" != 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
4518 #include <time.h>
4519 void *v = localtime_r;
4520 EOF
4521
4522 }
4523
4524 probe_libc
4525 test -n "$libc_type" && enable libc_$libc_type
4526 probe_libc host_
4527 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4528
4529 case $libc_type in
4530     bionic)
4531         add_compat strtod.o strtod=avpriv_strtod
4532         ;;
4533 esac
4534
4535 # hacks for compiler/libc/os combinations
4536
4537 if enabled_all tms470 libc_glibc; then
4538     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4539     add_cppflags -D__USER_LABEL_PREFIX__=
4540     add_cppflags -D__builtin_memset=memset
4541     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4542     add_cflags   -pds=48    # incompatible redefinition of macro
4543 fi
4544
4545 if enabled_all ccc libc_glibc; then
4546     add_ldflags -Wl,-z,now  # calls to libots crash without this
4547 fi
4548
4549 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4550     add_cppflags '-I\$(SRC_PATH)/compat/float'
4551
4552 esc(){
4553     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4554 }
4555
4556 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4557
4558 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4559
4560 set_default libdir
4561 : ${shlibdir_default:="$libdir"}
4562 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4563
4564 set_default $PATHS_LIST
4565 set_default nm
4566
4567 # we need to build at least one lib type
4568 if ! enabled_any static shared; then
4569     cat <<EOF
4570 At least one library type must be built.
4571 Specify --enable-static to build the static libraries or --enable-shared to
4572 build the shared libraries as well. To only build the shared libraries specify
4573 --disable-static in addition to --enable-shared.
4574 EOF
4575     exit 1;
4576 fi
4577
4578 die_license_disabled() {
4579     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4580 }
4581
4582 die_license_disabled_gpl() {
4583     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4584 }
4585
4586 die_license_disabled gpl frei0r
4587 die_license_disabled gpl libcdio
4588 die_license_disabled gpl libsmbclient
4589 die_license_disabled gpl libutvideo
4590 die_license_disabled gpl libvidstab
4591 die_license_disabled gpl libx264
4592 die_license_disabled gpl libx265
4593 die_license_disabled gpl libxavs
4594 die_license_disabled gpl libxvid
4595 die_license_disabled gpl libzvbi
4596 die_license_disabled gpl x11grab
4597
4598 die_license_disabled nonfree libaacplus
4599 die_license_disabled nonfree libfaac
4600 die_license_disabled nonfree nvenc
4601 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4602 enabled gpl && die_license_disabled_gpl nonfree openssl
4603
4604 die_license_disabled version3 libopencore_amrnb
4605 die_license_disabled version3 libopencore_amrwb
4606 die_license_disabled version3 libsmbclient
4607 die_license_disabled version3 libvo_aacenc
4608 die_license_disabled version3 libvo_amrwbenc
4609
4610 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4611
4612 disabled optimizations || check_cflags -fomit-frame-pointer
4613
4614 enable_weak_pic() {
4615     disabled pic && return
4616     enable pic
4617     add_cppflags -DPIC
4618     case "$target_os" in
4619     mingw*|cygwin*)
4620         ;;
4621     *)
4622         add_cflags -fPIC
4623         ;;
4624     esac
4625     add_asflags  -fPIC
4626 }
4627
4628 enabled pic && enable_weak_pic
4629
4630 check_cc <<EOF || die "Symbol mangling check failed."
4631 int ff_extern;
4632 EOF
4633 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4634 extern_prefix=${sym%%ff_extern*}
4635
4636 check_cc <<EOF && enable_weak inline_asm
4637 void foo(void) { __asm__ volatile ("" ::); }
4638 EOF
4639
4640 _restrict=
4641 for restrict_keyword in restrict __restrict__ __restrict; do
4642     check_cc <<EOF && _restrict=$restrict_keyword && break
4643 void foo(char * $restrict_keyword p);
4644 EOF
4645 done
4646
4647 check_cc <<EOF && enable pragma_deprecated
4648 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4649 EOF
4650
4651 check_cc <<EOF && enable attribute_packed
4652 struct { int x; } __attribute__((packed)) x;
4653 EOF
4654
4655 check_cc <<EOF && enable attribute_may_alias
4656 union { int x; } __attribute__((may_alias)) x;
4657 EOF
4658
4659 check_cc <<EOF || die "endian test failed"
4660 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4661 EOF
4662 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4663
4664 if ! enabled ppc64 || enabled bigendian; then
4665     disable vsx
4666 fi
4667
4668 check_gas() {
4669     log "check_gas using '$as' as AS"
4670     # :vararg is used on aarch64, arm and ppc altivec
4671     check_as <<EOF || return 1
4672 .macro m n, y:vararg=0
4673 \n: .int \y
4674 .endm
4675 m x
4676 EOF
4677     # .altmacro is only used in arm asm
4678     ! enabled arm || check_as <<EOF || return 1
4679 .altmacro
4680 EOF
4681     enable gnu_as
4682     return 0
4683 }
4684
4685 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4686     nogas=:
4687     enabled_any arm aarch64 && nogas=die
4688     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4689     as_noop=-v
4690
4691     case $as_type in
4692         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4693         gcc)  gaspp_as_type=gas ;;
4694         *)    gaspp_as_type=$as_type ;;
4695     esac
4696
4697     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4698
4699     test "${as#*gas-preprocessor.pl}" != "$as" ||
4700     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4701         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4702
4703     if ! check_gas ; then
4704         as=${gas:=$as}
4705         check_gas || \
4706             $nogas "GNU assembler not found, install/update gas-preprocessor"
4707     fi
4708
4709     check_as <<EOF && enable as_func
4710 .func test
4711 .endfunc
4712 EOF
4713 fi
4714
4715 check_inline_asm inline_asm_labels '"1:\n"'
4716
4717 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4718
4719 if enabled aarch64; then
4720     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4721     # internal assembler in clang 3.3 does not support this instruction
4722     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4723     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4724
4725     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4726
4727 elif enabled alpha; then
4728
4729     check_cflags -mieee
4730
4731 elif enabled arm; then
4732
4733     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4734 float func(float a, float b){ return a+b; }
4735 EOF
4736
4737     enabled thumb && check_cflags -mthumb || check_cflags -marm
4738
4739     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4740         enable vfp_args
4741     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4742         case "${cross_prefix:-$cc}" in
4743             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4744             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4745 __asm__ (".eabi_attribute 28, 1");
4746 int main(void) { return 0; }
4747 EOF
4748         esac
4749         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4750     fi
4751
4752     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4753     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4754     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4755     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4756     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4757     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4758     enabled setend  && check_insn setend  'setend be'
4759
4760     [ $target_os = linux ] || [ $target_os = android ] ||
4761         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4762             $ARCH_EXT_LIST_ARM
4763
4764     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4765
4766     check_as <<EOF && enable as_dn_directive
4767 ra .dn d0.i16
4768 .unreq ra
4769 EOF
4770
4771     # llvm's integrated assembler supports .object_arch from llvm 3.5
4772     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4773 .object_arch armv4
4774 EOF
4775
4776     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4777
4778 elif enabled mips; then
4779
4780     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4781     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4782     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4783
4784     # Enable minimum ISA based on selected options
4785     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4786         add_cflags "-mips64r2"
4787         add_asflags "-mips64r2"
4788     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4789         add_cflags "-mips64"
4790         add_asflags "-mips64"
4791     elif enabled mipsdspr1 || enabled mipsdspr2; then
4792         add_cflags "-mips32r2 -mfp32"
4793         add_asflags "-mips32r2 -mfp32"
4794     elif enabled mips32r5 || enabled mips64r6; then
4795         check_cflags "-mfp64"
4796         check_ldflags "-mfp64"
4797     fi
4798
4799     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4800      check_ldflags "-mips32r5" &&
4801      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4802     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4803      check_ldflags "-mips64r6" &&
4804      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4805     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4806      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4807     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4808      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4809     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4810      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4811     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4812      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4813
4814     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4815     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4816     enabled msa && add_asflags "-mmsa"
4817
4818 elif enabled parisc; then
4819
4820     if enabled gcc; then
4821         case $($cc -dumpversion) in
4822             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4823         esac
4824     fi
4825
4826 elif enabled ppc; then
4827
4828     enable local_aligned_8 local_aligned_16 local_aligned_32
4829
4830     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4831     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4832     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4833     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4834
4835     # AltiVec flags: The FSF version of GCC differs from the Apple version
4836     if enabled altivec; then
4837         check_cflags -maltivec -mabi=altivec &&
4838         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4839         check_cflags -faltivec
4840
4841         # check if our compiler supports Motorola AltiVec C API
4842         check_cc <<EOF || disable altivec
4843 $inc_altivec_h
4844 int main(void) {
4845     vector signed int v1 = (vector signed int) { 0 };
4846     vector signed int v2 = (vector signed int) { 1 };
4847     v1 = vec_add(v1, v2);
4848     return 0;
4849 }
4850 EOF
4851
4852         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4853     fi
4854
4855     if enabled vsx; then
4856         check_cflags -mvsx &&
4857         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4858     fi
4859
4860     if enabled power8; then
4861         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4862     fi
4863
4864 elif enabled x86; then
4865
4866     check_builtin rdtsc    intrin.h   "__rdtsc()"
4867     check_builtin mm_empty mmintrin.h "_mm_empty()"
4868
4869     enable local_aligned_8 local_aligned_16 local_aligned_32
4870
4871     # check whether EBP is available on x86
4872     # As 'i' is stored on the stack, this program will crash
4873     # if the base pointer is used to access it because the
4874     # base pointer is cleared in the inline assembly code.
4875     check_exec_crash <<EOF && enable ebp_available
4876 volatile int i=0;
4877 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4878 return i;
4879 EOF
4880
4881     # check whether EBX is available on x86
4882     check_inline_asm ebx_available '""::"b"(0)' &&
4883         check_inline_asm ebx_available '"":::"%ebx"'
4884
4885     # check whether xmm clobbers are supported
4886     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4887
4888     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4889         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4890
4891     # check whether binutils is new enough to compile SSSE3/MMXEXT
4892     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4893     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4894
4895     if ! disabled_any asm mmx yasm; then
4896         if check_cmd $yasmexe --version; then
4897             enabled x86_64 && yasm_extra="-m amd64"
4898             yasm_debug="-g dwarf2"
4899         elif check_cmd nasm -v; then
4900             yasmexe=nasm
4901             yasm_debug="-g -F dwarf"
4902             if enabled x86_64; then
4903                 case "$objformat" in
4904                     elf)   objformat=elf64 ;;
4905                     win32) objformat=win64 ;;
4906                 esac
4907             fi
4908         fi
4909
4910         YASMFLAGS="-f $objformat $yasm_extra"
4911         enabled pic               && append YASMFLAGS "-DPIC"
4912         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4913         case "$objformat" in
4914             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4915         esac
4916
4917         check_yasm "movbe ecx, [5]" && enable yasm ||
4918             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4919         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4920         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4921         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4922         check_yasm "CPU amdnop" || disable cpunop
4923     fi
4924
4925     case "$cpu" in
4926         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4927             disable fast_clz
4928         ;;
4929     esac
4930
4931 fi
4932
4933 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4934
4935 check_ldflags -Wl,--as-needed
4936 check_ldflags -Wl,-z,noexecstack
4937
4938 if check_func dlopen; then
4939     ldl=
4940 elif check_func dlopen -ldl; then
4941     ldl=-ldl
4942 fi
4943
4944 frei0r_filter_extralibs='$ldl'
4945 frei0r_src_filter_extralibs='$ldl'
4946 ladspa_filter_extralibs='$ldl'
4947 nvenc_encoder_extralibs='$ldl'
4948
4949 if ! disabled network; then
4950     check_func getaddrinfo $network_extralibs
4951     check_func getservbyport $network_extralibs
4952     check_func inet_aton $network_extralibs
4953
4954     check_type netdb.h "struct addrinfo"
4955     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4956     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4957     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4958     check_type poll.h "struct pollfd"
4959     check_type netinet/sctp.h "struct sctp_event_subscribe"
4960     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4961     check_type netinet/in.h "struct sockaddr_in6"
4962     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4963     check_type "sys/types.h sys/socket.h" socklen_t
4964
4965     # Prefer arpa/inet.h over winsock2
4966     if check_header arpa/inet.h ; then
4967         check_func closesocket
4968     elif check_header winsock2.h ; then
4969         check_func_headers winsock2.h closesocket -lws2 &&
4970             network_extralibs="-lws2" ||
4971         { check_func_headers winsock2.h closesocket -lws2_32 &&
4972             network_extralibs="-lws2_32"; } || disable winsock2_h network
4973         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4974
4975         check_type ws2tcpip.h socklen_t
4976         check_type ws2tcpip.h "struct addrinfo"
4977         check_type ws2tcpip.h "struct group_source_req"
4978         check_type ws2tcpip.h "struct ip_mreq_source"
4979         check_type ws2tcpip.h "struct ipv6_mreq"
4980         check_type winsock2.h "struct pollfd"
4981         check_struct winsock2.h "struct sockaddr" sa_len
4982         check_type ws2tcpip.h "struct sockaddr_in6"
4983         check_type ws2tcpip.h "struct sockaddr_storage"
4984     else
4985         disable network
4986     fi
4987 fi
4988
4989 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4990 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4991 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4992 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4993 check_builtin sarestart signal.h "SA_RESTART"
4994 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4995 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
4996 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
4997
4998 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4999 check_func  ${malloc_prefix}memalign            && enable memalign
5000 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5001
5002 check_func  access
5003 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5004 check_func  fcntl
5005 check_func  fork
5006 check_func  gethrtime
5007 check_func  getopt
5008 check_func  getrusage
5009 check_func  gettimeofday
5010 check_func  isatty
5011 check_func  mach_absolute_time
5012 check_func  mkstemp
5013 check_func  mmap
5014 check_func  mprotect
5015 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5016 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5017 check_func  sched_getaffinity
5018 check_func  setrlimit
5019 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5020 check_func  strerror_r
5021 check_func  sysconf
5022 check_func  sysctl
5023 check_func  usleep
5024
5025 check_func_headers conio.h kbhit
5026 check_func_headers io.h setmode
5027 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5028 check_func_headers stdlib.h getenv
5029
5030 check_func_headers windows.h CoTaskMemFree -lole32
5031 check_func_headers windows.h GetProcessAffinityMask
5032 check_func_headers windows.h GetProcessTimes
5033 check_func_headers windows.h GetSystemTimeAsFileTime
5034 check_func_headers windows.h MapViewOfFile
5035 check_func_headers windows.h PeekNamedPipe
5036 check_func_headers windows.h SetConsoleTextAttribute
5037 check_func_headers windows.h SetConsoleCtrlHandler
5038 check_func_headers windows.h Sleep
5039 check_func_headers windows.h VirtualAlloc
5040 check_struct windows.h "CONDITION_VARIABLE" Ptr
5041 check_func_headers glob.h glob
5042 enabled xlib &&
5043     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5044
5045 check_header direct.h
5046 check_header dlfcn.h
5047 check_header d3d11.h
5048 check_header dxva.h
5049 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5050 check_header io.h
5051 check_header libcrystalhd/libcrystalhd_if.h
5052 check_header mach/mach_time.h
5053 check_header malloc.h
5054 check_header net/udplite.h
5055 check_header poll.h
5056 check_header sys/mman.h
5057 check_header sys/param.h
5058 check_header sys/resource.h
5059 check_header sys/select.h
5060 check_header sys/time.h
5061 check_header sys/un.h
5062 check_header termios.h
5063 check_header unistd.h
5064 check_header valgrind/valgrind.h
5065 check_header vdpau/vdpau.h
5066 check_header vdpau/vdpau_x11.h
5067 check_header VideoDecodeAcceleration/VDADecoder.h
5068 check_header windows.h
5069 check_header X11/extensions/XvMClib.h
5070 check_header asm/types.h
5071
5072 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5073 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5074 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5075
5076 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5077
5078 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5079 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5080 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
5081
5082 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5083
5084 if ! disabled w32threads && ! enabled pthreads; then
5085     check_func_headers "windows.h process.h" _beginthreadex &&
5086         enable w32threads || disable w32threads
5087 fi
5088
5089 # check for some common methods of building with pthread support
5090 # do this before the optional library checks as some of them require pthreads
5091 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5092     enable pthreads
5093     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5094         add_cflags -pthread
5095         add_extralibs -pthread
5096     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5097         add_cflags -pthreads
5098         add_extralibs -pthreads
5099     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5100         add_cflags -ldl -pthread
5101         add_extralibs -ldl -pthread
5102     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5103         add_extralibs -lpthreadGC2
5104     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5105         :
5106     elif ! check_func pthread_join && ! check_func pthread_create; then
5107         disable pthreads
5108     fi
5109     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5110 fi
5111
5112
5113 if enabled pthreads; then
5114   check_func pthread_cancel
5115 fi
5116
5117 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5118 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5119 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5120
5121 check_lib math.h sin -lm && LIBM="-lm"
5122 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5123
5124 atan2f_args=2
5125 ldexpf_args=2
5126 powf_args=2
5127
5128 for func in $MATH_FUNCS; do
5129     eval check_mathfunc $func \${${func}_args:-1}
5130 done
5131
5132 # these are off by default, so fail if requested and not available
5133 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5134 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5135                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5136 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5137                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5138                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5139 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5140 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5141 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5142 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5143 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5144 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5145 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5146 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5147 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5148 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5149                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5150                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5151 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5152 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create &&
5153                              check_struct libdcadec/dca_context.h "struct dcadec_exss_info" matrix_encoding
5154 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5155 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5156                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5157                                  warn "using libfdk without pkg-config"; } }
5158 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"
5159 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5160 enabled fontconfig        && enable libfontconfig
5161 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5162 enabled libfreetype       && require_libfreetype
5163 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5164 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5165 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5166                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5167                                done || die "ERROR: libgsm not found"; }
5168 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5169 enabled libkvazaar        && require2 libkvazaar kvazaar.h kvz_api_get -lkvazaar
5170 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5171 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5172 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5173 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5174 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5175 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5176 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5177 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5178 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5179                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5180                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5181                                die "ERROR: libopenjpeg not found"; }
5182 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5183 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5184 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5185 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5186 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5187 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5188 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5189                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5190 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5191 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5192 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5193 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5194 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5195     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5196     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5197 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5198 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5199                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5200                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5201 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5202 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5203 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5204 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5205 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5206 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5207
5208 enabled libvpx            && {
5209     enabled libvpx_vp8_decoder && {
5210         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5211             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5212                 die "ERROR: libvpx decoder version must be >=0.9.1";
5213     }
5214     enabled libvpx_vp8_encoder && {
5215         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5216             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5217                 die "ERROR: libvpx encoder version must be >=0.9.7";
5218     }
5219     enabled libvpx_vp9_decoder && {
5220         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5221             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5222                 disable libvpx_vp9_decoder;
5223     }
5224     enabled libvpx_vp9_encoder && {
5225         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5226             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5227                 disable libvpx_vp9_encoder;
5228     }
5229     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5230         die "libvpx enabled but no supported decoders found"
5231     fi
5232 }
5233
5234 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5235 enabled libwebp           && {
5236     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5237     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5238 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5239                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5240                                  warn "using libx264 without pkg-config"; } } &&
5241                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5242                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5243                              { check_cpp_condition x264.h "X264_MPEG2" &&
5244                                enable libx262; }
5245 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5246                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5247                                die "ERROR: libx265 version must be >= 57."; }
5248 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5249 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5250 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5251 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5252 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5253                                 { ! enabled cross_compile && {
5254                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5255                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5256                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5257                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5258                                die "ERROR: mmal not found"; }
5259 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5260                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5261                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5262                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5263 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5264                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5265                                die "ERROR: openal not found"; } &&
5266                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5267                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5268 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5269                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5270                                die "ERROR: opencl not found"; } &&
5271                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5272                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5273                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5274 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5275                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5276                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5277                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5278                                die "ERROR: opengl not found."
5279                              }
5280 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5281                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5282                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5283                                die "ERROR: openssl not found"; }
5284 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5285
5286 if enabled gnutls; then
5287     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5288     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5289 fi
5290
5291 # libdc1394 check
5292 if enabled libdc1394; then
5293     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5294         enable libdc1394_2; } ||
5295     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5296         enable libdc1394_1; } ||
5297     die "ERROR: No version of libdc1394 found "
5298 fi
5299 if ! disabled sdl; then
5300     SDL_CONFIG="${cross_prefix}sdl-config"
5301     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5302         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5303         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5304         enable sdl
5305     else
5306         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5307             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5308             sdl_libs=$("${SDL_CONFIG}" --libs)
5309             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5310             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5311             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5312             enable sdl
5313         elif enabled sdl ; then
5314             die "ERROR: SDL not found"
5315         else
5316             disable sdl
5317         fi
5318     fi
5319 fi
5320 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5321
5322 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5323     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5324     enable securetransport; }
5325
5326 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5327 enabled makeinfo \
5328     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5329     && enable makeinfo_html || disable makeinfo_html
5330 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5331 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5332 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5333 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5334
5335 check_header linux/fb.h
5336 check_header linux/videodev.h
5337 check_header linux/videodev2.h
5338 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5339
5340 check_header sys/videoio.h
5341 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5342
5343 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5344 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5345 # w32api 3.12 had it defined wrong
5346 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5347
5348 check_type "dshow.h" IBaseFilter
5349
5350 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5351 { check_header dev/bktr/ioctl_meteor.h &&
5352   check_header dev/bktr/ioctl_bt848.h; } ||
5353 { check_header machine/ioctl_meteor.h &&
5354   check_header machine/ioctl_bt848.h; } ||
5355 { check_header dev/video/meteor/ioctl_meteor.h &&
5356   check_header dev/video/bktr/ioctl_bt848.h; } ||
5357 check_header dev/ic/bt8xx.h
5358
5359 check_header sndio.h
5360 if check_struct sys/soundcard.h audio_buf_info bytes; then
5361     enable_safe sys/soundcard.h
5362 else
5363     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5364     #include <sys/soundcard.h>
5365     audio_buf_info abc;
5366 EOF
5367 fi
5368 check_header soundcard.h
5369
5370 enabled_any alsa_indev alsa_outdev &&
5371     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5372
5373 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5374     check_func jack_port_get_latency_range -ljack
5375
5376 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5377
5378 if enabled libcdio; then
5379     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5380     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5381     die "ERROR: No usable libcdio/cdparanoia found"
5382 fi
5383
5384 enabled xlib &&
5385     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5386
5387 if ! disabled libxcb; then
5388     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5389         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5390     } && disable x11grab && enable libxcb
5391
5392 if enabled libxcb; then
5393     disabled libxcb_shm || {
5394         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5395             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5396         } && check_header sys/shm.h && enable libxcb_shm; }
5397
5398     disabled libxcb_xfixes || {
5399         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5400             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5401         } && enable libxcb_xfixes; }
5402
5403     disabled libxcb_shape || {
5404         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5405             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5406         } && enable libxcb_shape; }
5407
5408     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5409     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5410 fi
5411 fi
5412
5413 if enabled x11grab; then
5414     enabled xlib || die "ERROR: Xlib not found"
5415     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5416     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5417 fi
5418
5419 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5420
5421 enabled dxva2api_h &&
5422     check_cc <<EOF && enable dxva2api_cobj
5423 #define _WIN32_WINNT 0x0600
5424 #define COBJMACROS
5425 #include <windows.h>
5426 #include <d3d9.h>
5427 #include <dxva2api.h>
5428 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5429 EOF
5430
5431 enabled vaapi &&
5432     check_lib va/va.h vaInitialize -lva ||
5433     disable vaapi
5434
5435 enabled vaapi && enabled xlib &&
5436     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5437     enable vaapi_x11
5438
5439 enabled vdpau &&
5440     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5441     disable vdpau
5442
5443 enabled vdpau && enabled xlib &&
5444     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5445     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5446     enable vdpau_x11
5447
5448 # Funny iconv installations are not unusual, so check it after all flags have been set
5449 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5450
5451 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5452
5453 # add some useful compiler flags if supported
5454 check_cflags -Wdeclaration-after-statement
5455 check_cflags -Wall
5456 check_cflags -Wdisabled-optimization
5457 check_cflags -Wpointer-arith
5458 check_cflags -Wredundant-decls
5459 check_cflags -Wwrite-strings
5460 check_cflags -Wtype-limits
5461 check_cflags -Wundef
5462 check_cflags -Wmissing-prototypes
5463 check_cflags -Wno-pointer-to-int-cast
5464 check_cflags -Wstrict-prototypes
5465 check_cflags -Wempty-body
5466 enabled extra_warnings && check_cflags -Winline
5467
5468 check_disable_warning(){
5469     warning_flag=-W${1#-Wno-}
5470     test_cflags $warning_flag && add_cflags $1
5471 }
5472
5473 check_disable_warning -Wno-parentheses
5474 check_disable_warning -Wno-switch
5475 check_disable_warning -Wno-format-zero-length
5476 check_disable_warning -Wno-pointer-sign
5477
5478 # add some linker flags
5479 check_ldflags -Wl,--warn-common
5480 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5481 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5482 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5483 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5484
5485 # add some strip flags
5486 # -wN '..@*' is more selective than -x, but not available everywhere.
5487 check_stripflags -wN \'..@*\' || check_stripflags -x
5488
5489 enabled neon_clobber_test &&
5490     check_ldflags -Wl,--wrap,avcodec_open2              \
5491                   -Wl,--wrap,avcodec_decode_audio4      \
5492                   -Wl,--wrap,avcodec_decode_video2      \
5493                   -Wl,--wrap,avcodec_decode_subtitle2   \
5494                   -Wl,--wrap,avcodec_encode_audio2      \
5495                   -Wl,--wrap,avcodec_encode_video2      \
5496                   -Wl,--wrap,avcodec_encode_subtitle    \
5497                   -Wl,--wrap,swr_convert                \
5498                   -Wl,--wrap,avresample_convert ||
5499     disable neon_clobber_test
5500
5501 enabled xmm_clobber_test &&
5502     check_ldflags -Wl,--wrap,avcodec_open2              \
5503                   -Wl,--wrap,avcodec_decode_audio4      \
5504                   -Wl,--wrap,avcodec_decode_video2      \
5505                   -Wl,--wrap,avcodec_decode_subtitle2   \
5506                   -Wl,--wrap,avcodec_encode_audio2      \
5507                   -Wl,--wrap,avcodec_encode_video       \
5508                   -Wl,--wrap,avcodec_encode_video2      \
5509                   -Wl,--wrap,avcodec_encode_subtitle    \
5510                   -Wl,--wrap,swr_convert                \
5511                   -Wl,--wrap,avresample_convert         \
5512                   -Wl,--wrap,sws_scale ||
5513     disable xmm_clobber_test
5514
5515 echo "X{};" > $TMPV
5516 if test_ldflags -Wl,--version-script,$TMPV; then
5517     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5518     check_cc <<EOF && enable symver_asm_label
5519 void ff_foo(void) __asm__ ("av_foo@VERSION");
5520 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5521 EOF
5522     check_cc <<EOF && enable symver_gnu_asm
5523 __asm__(".symver ff_foo,av_foo@VERSION");
5524 void ff_foo(void) {}
5525 EOF
5526 fi
5527
5528 if [ -z "$optflags" ]; then
5529     if enabled small; then
5530         optflags=$cflags_size
5531     elif enabled optimizations; then
5532         optflags=$cflags_speed
5533     else
5534         optflags=$cflags_noopt
5535     fi
5536 fi
5537
5538 check_optflags(){
5539     check_cflags "$@"
5540     enabled lto && check_ldflags "$@"
5541 }
5542
5543
5544 if enabled lto; then
5545     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5546     check_cflags  -flto
5547     check_ldflags -flto $cpuflags
5548     disable inline_asm_direct_symbol_refs
5549 fi
5550
5551 check_optflags $optflags
5552 check_optflags -fno-math-errno
5553 check_optflags -fno-signed-zeros
5554
5555 enabled ftrapv && check_cflags -ftrapv
5556
5557 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5558 int x;
5559 EOF
5560
5561
5562 if enabled icc; then
5563     # Just warnings, no remarks
5564     check_cflags -w1
5565     # -wd: Disable following warnings
5566     # 144, 167, 556: -Wno-pointer-sign
5567     # 188: enumerated type mixed with another type
5568     # 1292: attribute "foo" ignored
5569     # 1419: external declaration in primary source file
5570     # 10006: ignoring unknown option -fno-signed-zeros
5571     # 10148: ignoring unknown option -Wno-parentheses
5572     # 10156: ignoring option '-W'; no argument required
5573     # 13200: No EMMS instruction before call to function
5574     # 13203: No EMMS instruction before return from function
5575     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5576     # 11030: Warning unknown option --as-needed
5577     # 10156: ignoring option '-export'; no argument required
5578     check_ldflags -wd10156,11030
5579     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5580     enable ebp_available
5581     # The test above does not test linking
5582     enabled lto && disable symver_asm_label
5583     if enabled x86_32; then
5584         icc_version=$($cc -dumpversion)
5585         test ${icc_version%%.*} -ge 11 &&
5586             check_cflags -falign-stack=maintain-16-byte ||
5587             disable aligned_stack
5588     fi
5589 elif enabled ccc; then
5590     # disable some annoying warnings
5591     add_cflags -msg_disable bitnotint
5592     add_cflags -msg_disable mixfuncvoid
5593     add_cflags -msg_disable nonstandcast
5594     add_cflags -msg_disable unsupieee
5595 elif enabled gcc; then
5596     check_optflags -fno-tree-vectorize
5597     check_cflags -Werror=format-security
5598     check_cflags -Werror=implicit-function-declaration
5599     check_cflags -Werror=missing-prototypes
5600     check_cflags -Werror=return-type
5601     check_cflags -Werror=vla
5602     check_cflags -Wformat
5603     check_cflags -fdiagnostics-color=auto
5604     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5605 elif enabled llvm_gcc; then
5606     check_cflags -mllvm -stack-alignment=16
5607 elif enabled clang; then
5608     check_cflags -mllvm -stack-alignment=16
5609     check_cflags -Qunused-arguments
5610     check_cflags -Werror=implicit-function-declaration
5611     check_cflags -Werror=missing-prototypes
5612     check_cflags -Werror=return-type
5613 elif enabled cparser; then
5614     add_cflags -Wno-missing-variable-declarations
5615     add_cflags -Wno-empty-statement
5616 elif enabled armcc; then
5617     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5618     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5619     # 2523: use of inline assembly is deprecated
5620     add_cflags -W${armcc_opt},--diag_suppress=2523
5621     add_cflags -W${armcc_opt},--diag_suppress=1207
5622     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5623     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5624     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5625     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5626 elif enabled tms470; then
5627     add_cflags -pds=824 -pds=837
5628     disable inline_asm
5629 elif enabled pathscale; then
5630     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5631 elif enabled_any msvc icl; then
5632     enabled x86_32 && disable aligned_stack
5633     enabled_all x86_32 debug && add_cflags -Oy-
5634     enabled debug && add_ldflags -debug
5635     enable pragma_deprecated
5636     if enabled icl; then
5637         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5638         # (correctly) on icl 13.x.
5639         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5640             add_cflags -Qansi-alias
5641         # Some inline asm is not compilable in debug
5642         if enabled debug; then
5643             disable ebp_available
5644             disable ebx_available
5645         fi
5646     fi
5647     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5648     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5649 fi
5650
5651 case $as_type in
5652     clang)
5653         add_asflags -Qunused-arguments
5654     ;;
5655 esac
5656
5657 case $ld_type in
5658     clang)
5659         check_ldflags -Qunused-arguments
5660     ;;
5661 esac
5662
5663 case $target_os in
5664     osf1)
5665         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5666     ;;
5667     plan9)
5668         add_cppflags -Dmain=plan9_main
5669     ;;
5670 esac
5671
5672 enable frame_thread_encoder
5673
5674 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5675
5676 check_deps $CONFIG_LIST       \
5677            $CONFIG_EXTRA      \
5678            $HAVE_LIST         \
5679            $ALL_COMPONENTS    \
5680
5681 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"
5682
5683
5684 if test $target_os = "haiku"; then
5685     disable memalign
5686     disable posix_memalign
5687 fi
5688
5689 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5690     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5691     enable dxva2_lib
5692
5693 ! enabled_any memalign posix_memalign aligned_malloc &&
5694     enabled simd_align_16 && enable memalign_hack
5695
5696 # add_dep lib dep
5697 # -> enable ${lib}_deps_${dep}
5698 # -> add $dep to ${lib}_deps only once
5699 add_dep() {
5700     lib=$1
5701     dep=$2
5702     enabled "${lib}_deps_${dep}" && return 0
5703     enable  "${lib}_deps_${dep}"
5704     prepend "${lib}_deps" $dep
5705 }
5706
5707 # merge deps lib components
5708 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5709 merge_deps() {
5710     lib=$1
5711     shift
5712     for comp in $*; do
5713         enabled $comp || continue
5714         eval "dep=\"\$${comp}_deps\""
5715         for d in $dep; do
5716             add_dep $lib $d
5717         done
5718     done
5719 }
5720
5721 merge_deps libavfilter $FILTER_LIST
5722
5723 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5724
5725 for thread in $THREADS_LIST; do
5726     if enabled $thread; then
5727         test -n "$thread_type" &&
5728             die "ERROR: Only one thread type must be selected." ||
5729             thread_type="$thread"
5730     fi
5731 done
5732
5733 enabled zlib && add_cppflags -DZLIB_CONST
5734
5735 # conditional library dependencies, in linking order
5736 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5737 enabled aresample_filter    && prepend avfilter_deps "swresample"
5738 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5739 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5740 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5741 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5742 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5743 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5744 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5745 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5746 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5747 enabled pan_filter          && prepend avfilter_deps "swresample"
5748 enabled pp_filter           && prepend avfilter_deps "postproc"
5749 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5750 enabled resample_filter && prepend avfilter_deps "avresample"
5751 enabled sab_filter          && prepend avfilter_deps "swscale"
5752 enabled scale_filter    && prepend avfilter_deps "swscale"
5753 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5754 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5755 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5756 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5757
5758 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5759
5760 enabled opus_decoder    && prepend avcodec_deps "swresample"
5761
5762 expand_deps(){
5763     lib_deps=${1}_deps
5764     eval "deps=\$$lib_deps"
5765     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5766     unique $lib_deps
5767 }
5768
5769 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5770 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5771
5772 map 'expand_deps $v' $LIBRARY_LIST
5773
5774 echo "install prefix            $prefix"
5775 echo "source path               $source_path"
5776 echo "C compiler                $cc"
5777 echo "C library                 $libc_type"
5778 if test "$host_cc" != "$cc"; then
5779     echo "host C compiler           $host_cc"
5780     echo "host C library            $host_libc_type"
5781 fi
5782 echo "ARCH                      $arch ($cpu)"
5783 if test "$build_suffix" != ""; then
5784     echo "build suffix              $build_suffix"
5785 fi
5786 if test "$progs_suffix" != ""; then
5787     echo "progs suffix              $progs_suffix"
5788 fi
5789 if test "$extra_version" != ""; then
5790     echo "version string suffix     $extra_version"
5791 fi
5792 echo "big-endian                ${bigendian-no}"
5793 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5794 if enabled x86; then
5795     echo "${yasmexe}                      ${yasm-no}"
5796     echo "MMX enabled               ${mmx-no}"
5797     echo "MMXEXT enabled            ${mmxext-no}"
5798     echo "3DNow! enabled            ${amd3dnow-no}"
5799     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5800     echo "SSE enabled               ${sse-no}"
5801     echo "SSSE3 enabled             ${ssse3-no}"
5802     echo "AVX enabled               ${avx-no}"
5803     echo "XOP enabled               ${xop-no}"
5804     echo "FMA3 enabled              ${fma3-no}"
5805     echo "FMA4 enabled              ${fma4-no}"
5806     echo "i686 features enabled     ${i686-no}"
5807     echo "CMOV is fast              ${fast_cmov-no}"
5808     echo "EBX available             ${ebx_available-no}"
5809     echo "EBP available             ${ebp_available-no}"
5810 fi
5811 if enabled aarch64; then
5812     echo "NEON enabled              ${neon-no}"
5813     echo "VFP enabled               ${vfp-no}"
5814 fi
5815 if enabled arm; then
5816     echo "ARMv5TE enabled           ${armv5te-no}"
5817     echo "ARMv6 enabled             ${armv6-no}"
5818     echo "ARMv6T2 enabled           ${armv6t2-no}"
5819     echo "VFP enabled               ${vfp-no}"
5820     echo "NEON enabled              ${neon-no}"
5821     echo "THUMB enabled             ${thumb-no}"
5822 fi
5823 if enabled mips; then
5824     echo "MIPS FPU enabled          ${mipsfpu-no}"
5825     echo "MIPS32R5 enabled          ${mips32r5-no}"
5826     echo "MIPS64R6 enabled          ${mips64r6-no}"
5827     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5828     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5829     echo "MIPS MSA enabled          ${msa-no}"
5830     echo "LOONGSON MMI enabled      ${mmi-no}"
5831 fi
5832 if enabled ppc; then
5833     echo "AltiVec enabled           ${altivec-no}"
5834     echo "VSX enabled               ${vsx-no}"
5835     echo "POWER8 enabled            ${power8-no}"
5836     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5837     echo "dcbzl available           ${dcbzl-no}"
5838 fi
5839 echo "debug symbols             ${debug-no}"
5840 echo "strip symbols             ${stripping-no}"
5841 echo "optimize for size         ${small-no}"
5842 echo "optimizations             ${optimizations-no}"
5843 echo "static                    ${static-no}"
5844 echo "shared                    ${shared-no}"
5845 echo "postprocessing support    ${postproc-no}"
5846 echo "new filter support        ${avfilter-no}"
5847 echo "network support           ${network-no}"
5848 echo "threading support         ${thread_type-no}"
5849 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5850 echo "SDL support               ${sdl-no}"
5851 echo "opencl enabled            ${opencl-no}"
5852 echo "texi2html enabled         ${texi2html-no}"
5853 echo "perl enabled              ${perl-no}"
5854 echo "pod2man enabled           ${pod2man-no}"
5855 echo "makeinfo enabled          ${makeinfo-no}"
5856 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5857 test -n "$random_seed" &&
5858     echo "random seed               ${random_seed}"
5859 echo
5860
5861 echo "External libraries:"
5862 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5863 echo
5864
5865 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5866     echo "Enabled ${type}s:"
5867     eval list=\$$(toupper $type)_LIST
5868     print_enabled '_*' $list | print_3_columns
5869     echo
5870 done
5871
5872 license="LGPL version 2.1 or later"
5873 if enabled nonfree; then
5874     license="nonfree and unredistributable"
5875 elif enabled gplv3; then
5876     license="GPL version 3 or later"
5877 elif enabled lgplv3; then
5878     license="LGPL version 3 or later"
5879 elif enabled gpl; then
5880     license="GPL version 2 or later"
5881 fi
5882
5883 echo "License: $license"
5884
5885 echo "Creating config.mak, config.h, and doc/config.texi..."
5886
5887 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5888
5889 enabled stripping || strip="echo skipping strip"
5890
5891 config_files="$TMPH config.mak doc/config.texi"
5892
5893 cat > config.mak <<EOF
5894 # Automatically generated by configure - do not modify!
5895 ifndef FFMPEG_CONFIG_MAK
5896 FFMPEG_CONFIG_MAK=1
5897 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5898 prefix=$prefix
5899 LIBDIR=\$(DESTDIR)$libdir
5900 SHLIBDIR=\$(DESTDIR)$shlibdir
5901 INCDIR=\$(DESTDIR)$incdir
5902 BINDIR=\$(DESTDIR)$bindir
5903 DATADIR=\$(DESTDIR)$datadir
5904 DOCDIR=\$(DESTDIR)$docdir
5905 MANDIR=\$(DESTDIR)$mandir
5906 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5907 SRC_PATH=$source_path
5908 ifndef MAIN_MAKEFILE
5909 SRC_PATH:=\$(SRC_PATH:.%=..%)
5910 endif
5911 CC_IDENT=$cc_ident
5912 ARCH=$arch
5913 INTRINSICS=$intrinsics
5914 CC=$cc
5915 CXX=$cxx
5916 AS=$as
5917 LD=$ld
5918 DEPCC=$dep_cc
5919 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5920 DEPAS=$as
5921 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5922 YASM=$yasmexe
5923 DEPYASM=$yasmexe
5924 AR=$ar
5925 ARFLAGS=$arflags
5926 AR_O=$ar_o
5927 RANLIB=$ranlib
5928 STRIP=$strip
5929 CP=cp -p
5930 LN_S=$ln_s
5931 CPPFLAGS=$CPPFLAGS
5932 CFLAGS=$CFLAGS
5933 CXXFLAGS=$CXXFLAGS
5934 ASFLAGS=$ASFLAGS
5935 AS_C=$AS_C
5936 AS_O=$AS_O
5937 CC_C=$CC_C
5938 CC_E=$CC_E
5939 CC_O=$CC_O
5940 CXX_C=$CXX_C
5941 CXX_O=$CXX_O
5942 LD_O=$LD_O
5943 LD_LIB=$LD_LIB
5944 LD_PATH=$LD_PATH
5945 DLLTOOL=$dlltool
5946 WINDRES=$windres
5947 DEPWINDRES=$dep_cc
5948 DOXYGEN=$doxygen
5949 LDFLAGS=$LDFLAGS
5950 LDEXEFLAGS=$LDEXEFLAGS
5951 LDLIBFLAGS=$LDLIBFLAGS
5952 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5953 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5954 YASMFLAGS=$YASMFLAGS
5955 BUILDSUF=$build_suffix
5956 PROGSSUF=$progs_suffix
5957 FULLNAME=$FULLNAME
5958 LIBPREF=$LIBPREF
5959 LIBSUF=$LIBSUF
5960 LIBNAME=$LIBNAME
5961 SLIBPREF=$SLIBPREF
5962 SLIBSUF=$SLIBSUF
5963 EXESUF=$EXESUF
5964 EXTRA_VERSION=$extra_version
5965 CCDEP=$CCDEP
5966 CXXDEP=$CXXDEP
5967 CCDEP_FLAGS=$CCDEP_FLAGS
5968 ASDEP=$ASDEP
5969 ASDEP_FLAGS=$ASDEP_FLAGS
5970 CC_DEPFLAGS=$CC_DEPFLAGS
5971 AS_DEPFLAGS=$AS_DEPFLAGS
5972 HOSTCC=$host_cc
5973 HOSTLD=$host_ld
5974 HOSTCFLAGS=$host_cflags
5975 HOSTCPPFLAGS=$host_cppflags
5976 HOSTEXESUF=$HOSTEXESUF
5977 HOSTLDFLAGS=$host_ldflags
5978 HOSTLIBS=$host_libs
5979 DEPHOSTCC=$host_cc
5980 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5981 HOSTCCDEP=$HOSTCCDEP
5982 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5983 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5984 HOSTCC_C=$HOSTCC_C
5985 HOSTCC_O=$HOSTCC_O
5986 HOSTLD_O=$HOSTLD_O
5987 TARGET_EXEC=$target_exec $target_exec_args
5988 TARGET_PATH=$target_path
5989 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5990 CFLAGS-ffplay=$sdl_cflags
5991 ZLIB=$($ldflags_filter -lz)
5992 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5993 EXTRALIBS=$extralibs
5994 COMPAT_OBJS=$compat_objs
5995 EXEOBJS=$exeobjs
5996 INSTALL=$install
5997 LIBTARGET=${LIBTARGET}
5998 SLIBNAME=${SLIBNAME}
5999 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6000 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6001 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6002 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6003 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6004 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6005 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6006 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6007 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6008 NOREDZONE_FLAGS=$noredzone_flags
6009 EOF
6010
6011 get_version(){
6012     lcname=lib${1}
6013     name=$(toupper $lcname)
6014     file=$source_path/$lcname/version.h
6015     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6016     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6017     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6018     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6019     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6020     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6021 }
6022
6023 map 'get_version $v' $LIBRARY_LIST
6024
6025 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6026
6027 print_program_libs(){
6028     eval "program_libs=\$${1}_libs"
6029     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6030 }
6031
6032 map 'print_program_libs $v' $PROGRAM_LIST
6033
6034 cat > $TMPH <<EOF
6035 /* Automatically generated by configure - do not modify! */
6036 #ifndef FFMPEG_CONFIG_H
6037 #define FFMPEG_CONFIG_H
6038 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6039 #define FFMPEG_LICENSE "$(c_escape $license)"
6040 #define CONFIG_THIS_YEAR 2015
6041 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6042 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6043 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6044 #define av_restrict $_restrict
6045 #define EXTERN_PREFIX "${extern_prefix}"
6046 #define EXTERN_ASM ${extern_prefix}
6047 #define BUILDSUF "$build_suffix"
6048 #define SLIBSUF "$SLIBSUF"
6049 #define HAVE_MMX2 HAVE_MMXEXT
6050 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6051 EOF
6052
6053 test -n "$assert_level" &&
6054     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6055
6056 test -n "$malloc_prefix" &&
6057     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6058
6059 if enabled yasm; then
6060     append config_files $TMPASM
6061     printf '' >$TMPASM
6062 fi
6063
6064 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6065
6066
6067 mkdir -p doc
6068 mkdir -p tests
6069 mkdir -p tests/api
6070 echo "@c auto-generated by configure" > doc/config.texi
6071
6072 print_config ARCH_   "$config_files" $ARCH_LIST
6073 print_config HAVE_   "$config_files" $HAVE_LIST
6074 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6075                                      $CONFIG_EXTRA      \
6076                                      $ALL_COMPONENTS    \
6077
6078 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6079 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6080
6081 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6082 cp_if_changed $TMPH config.h
6083 touch .config
6084
6085 enabled yasm && cp_if_changed $TMPASM config.asm
6086
6087 cat > $TMPH <<EOF
6088 /* Generated by ffconf */
6089 #ifndef AVUTIL_AVCONFIG_H
6090 #define AVUTIL_AVCONFIG_H
6091 EOF
6092
6093 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6094
6095 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6096
6097 cp_if_changed $TMPH libavutil/avconfig.h
6098
6099 if test -n "$WARNINGS"; then
6100     printf "\n$WARNINGS"
6101     enabled fatal_warnings && exit 1
6102 fi
6103
6104 # build pkg-config files
6105
6106 lib_version(){
6107     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6108 }
6109
6110 pkgconfig_generate(){
6111     name=$1
6112     shortname=${name#lib}${build_suffix}
6113     comment=$2
6114     version=$3
6115     libs=$4
6116     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6117     requires=${requires%, }
6118     enabled ${name#lib} || return 0
6119     mkdir -p $name
6120     cat <<EOF > $name/$name${build_suffix}.pc
6121 prefix=$prefix
6122 exec_prefix=\${prefix}
6123 libdir=$libdir
6124 includedir=$incdir
6125
6126 Name: $name
6127 Description: $comment
6128 Version: $version
6129 Requires: $(enabled shared || echo $requires)
6130 Requires.private: $(enabled shared && echo $requires)
6131 Conflicts:
6132 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6133 Libs.private: $(enabled shared && echo $libs)
6134 Cflags: -I\${includedir}
6135 EOF
6136
6137 mkdir -p doc/examples/pc-uninstalled
6138 includedir=${source_path}
6139 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6140     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6141 prefix=
6142 exec_prefix=
6143 libdir=\${pcfiledir}/../../../$name
6144 includedir=${includedir}
6145
6146 Name: $name
6147 Description: $comment
6148 Version: $version
6149 Requires: $requires
6150 Conflicts:
6151 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6152 Cflags: -I\${includedir}
6153 EOF
6154 }
6155
6156 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6157 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6158 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6159 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6160 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6161 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6162 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6163 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6164 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"