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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 198   --enable-frei0r          enable frei0r video filtering [no]
 199   --enable-gnutls          enable gnutls, needed for https support
 200                            if openssl is not used [no]
 201   --disable-iconv          disable iconv [autodetect]
 202   --enable-ladspa          enable LADSPA audio filtering [no]
 203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 204   --enable-libass          enable libass subtitles rendering,
 205                            needed for subtitles and ass filter [no]
 206   --enable-libbluray       enable BluRay reading using libbluray [no]
 207   --enable-libbs2b         enable bs2b DSP library [no]
 208   --enable-libcaca         enable textual display using libcaca [no]
 209   --enable-libcelt         enable CELT decoding via libcelt [no]
 210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 212                            and libraw1394 [no]
 213   --enable-libfaac         enable AAC encoding via libfaac [no]
 214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 218   --enable-libgme          enable Game Music Emu via libgme [no]
 219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 222   --enable-libmodplug      enable ModPlug via libmodplug [no]
 223   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 224   --enable-libnut          enable NUT (de)muxing via libnut,
 225                            native (de)muxer exists [no]
 226   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 227   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 228   --enable-libopencv       enable video filtering via libopencv [no]
 229   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 230   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 231   --enable-libopus         enable Opus de/encoding via libopus [no]
 232   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 233   --enable-libquvi         enable quvi input via libquvi [no]
 234   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 235   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 236   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 237   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 238   --enable-libsoxr         enable Include libsoxr resampling [no]
 239   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 240   --enable-libssh          enable SFTP protocol via libssh [no]
 241   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 242   --enable-libtheora       enable Theora encoding via libtheora [no]
 243   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 244   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 245   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 246   --enable-libvidstab      enable video stabilization using vid.stab [no]
 247   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 248   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 249   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 250                            native implementation exists [no]
 251   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 252   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 253   --enable-libwebp         enable WebP encoding via libwebp [no]
 254   --enable-libx264         enable H.264 encoding via x264 [no]
 255   --enable-libx265         enable HEVC encoding via x265 [no]
 256   --enable-libxavs         enable AVS encoding via xavs [no]
 257   --enable-libxcb          enable X11 grabbing using XCB [auto]
 258   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 259   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 260   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
 261   --enable-libxvid         enable Xvid encoding via xvidcore,
 262                            native MPEG-4/Xvid encoder exists [no]
 263   --enable-libzmq          enable message passing via libzmq [no]
 264   --enable-libzvbi         enable teletext support via libzvbi [no]
 265   --disable-lzma           disable lzma [autodetect]
 266   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 267   --enable-nvenc           enable NVIDIA NVENC support [no]
 268   --enable-openal          enable OpenAL 1.1 capture support [no]
 269   --enable-opencl          enable OpenCL code
 270   --enable-opengl          enable OpenGL rendering [no]
 271   --enable-openssl         enable openssl, needed for https support
 272                            if gnutls is not used [no]
 273   --disable-sdl            disable sdl [autodetect]
 274   --enable-x11grab         enable X11 grabbing (legacy) [no]
 275   --disable-xlib           disable xlib [autodetect]
 276   --disable-zlib           disable zlib [autodetect]
 277
 278 Toolchain options:
 279   --arch=ARCH              select architecture [$arch]
 280   --cpu=CPU                select the minimum required CPU (affects
 281                            instruction selection, may crash on older CPUs)
 282   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 283   --progs-suffix=SUFFIX    program name suffix []
 284   --enable-cross-compile   assume a cross-compiler is used
 285   --sysroot=PATH           root of cross-build tree
 286   --sysinclude=PATH        location of cross-build system headers
 287   --target-os=OS           compiler targets OS [$target_os]
 288   --target-exec=CMD        command to run executables on target
 289   --target-path=DIR        path to view of build directory on target
 290   --target-samples=DIR     path to samples directory on target
 291   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 292   --toolchain=NAME         set tool defaults according to NAME
 293   --nm=NM                  use nm tool NM [$nm_default]
 294   --ar=AR                  use archive tool AR [$ar_default]
 295   --as=AS                  use assembler AS [$as_default]
 296   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 297   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 298   --cc=CC                  use C compiler CC [$cc_default]
 299   --cxx=CXX                use C compiler CXX [$cxx_default]
 300   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 301   --ld=LD                  use linker LD [$ld_default]
 302   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 303   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 304   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 305   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 306   --host-cc=HOSTCC         use host C compiler HOSTCC
 307   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 308   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 309   --host-ld=HOSTLD         use host linker HOSTLD
 310   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 311   --host-libs=HLIBS        use libs HLIBS when linking for host
 312   --host-os=OS             compiler host OS [$target_os]
 313   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 314   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 315   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 316   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 317   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 318   --extra-version=STRING   version string suffix []
 319   --optflags=OPTFLAGS      override optimization-related compiler flags
 320   --build-suffix=SUFFIX    library name suffix []
 321   --enable-pic             build position-independent code
 322   --enable-thumb           compile for Thumb instruction set
 323   --enable-lto             use link-time optimization
 324
 325 Advanced options (experts only):
 326   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 327   --disable-symver         disable symbol versioning
 328   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 329   --disable-safe-bitstream-reader
 330                            disable buffer boundary checking in bitreaders
 331                            (faster, but may crash)
 332   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 333   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 334
 335 Optimization options (experts only):
 336   --disable-asm            disable all assembly optimizations
 337   --disable-altivec        disable AltiVec optimizations
 338   --disable-amd3dnow       disable 3DNow! optimizations
 339   --disable-amd3dnowext    disable 3DNow! extended optimizations
 340   --disable-mmx            disable MMX optimizations
 341   --disable-mmxext         disable MMXEXT optimizations
 342   --disable-sse            disable SSE optimizations
 343   --disable-sse2           disable SSE2 optimizations
 344   --disable-sse3           disable SSE3 optimizations
 345   --disable-ssse3          disable SSSE3 optimizations
 346   --disable-sse4           disable SSE4 optimizations
 347   --disable-sse42          disable SSE4.2 optimizations
 348   --disable-avx            disable AVX optimizations
 349   --disable-xop            disable XOP optimizations
 350   --disable-fma3           disable FMA3 optimizations
 351   --disable-fma4           disable FMA4 optimizations
 352   --disable-avx2           disable AVX2 optimizations
 353   --disable-armv5te        disable armv5te optimizations
 354   --disable-armv6          disable armv6 optimizations
 355   --disable-armv6t2        disable armv6t2 optimizations
 356   --disable-vfp            disable VFP optimizations
 357   --disable-neon           disable NEON optimizations
 358   --disable-inline-asm     disable use of inline assembly
 359   --disable-yasm           disable use of nasm/yasm assembly
 360   --disable-mips32r2       disable MIPS32R2 optimizations
 361   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 362   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 363   --disable-mipsfpu        disable floating point MIPS optimizations
 364   --disable-fast-unaligned consider unaligned accesses slow
 365
 366 Developer options (useful when working on FFmpeg itself):
 367   --disable-debug          disable debugging symbols
 368   --enable-debug=LEVEL     set the debug level [$debuglevel]
 369   --disable-optimizations  disable compiler optimizations
 370   --enable-extra-warnings  enable more compiler warnings
 371   --disable-stripping      disable stripping of executables and shared libraries
 372   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 373                            2 causes a slowdown at runtime.
 374   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 375   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 376                            leaks and errors, using the specified valgrind binary.
 377                            Cannot be combined with --target-exec
 378   --enable-ftrapv          Trap arithmetic overflows
 379   --samples=PATH           location of test samples for FATE, if not set use
 380                            \$FATE_SAMPLES at make invocation time.
 381   --enable-neon-clobber-test check NEON registers for clobbering (should be
 382                            used only for debugging purposes)
 383   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 384                            should be used only for debugging purposes)
 385   --enable-random          randomly enable/disable components
 386   --disable-random
 387   --enable-random=LIST     randomly enable/disable specific components or
 388   --disable-random=LIST    component groups. LIST is a comma-separated list
 389                            of NAME[:PROB] entries where NAME is a component
 390                            (group) and PROB the probability associated with
 391                            NAME (default 0.5).
 392   --random-seed=VALUE      seed value for --enable/disable-random
 393
 394 NOTE: Object files are built at the place where configure is launched.
 395 EOF
 396   exit 0
 397 }
 398
 399 quotes='""'
 400
 401 log(){
 402     echo "$@" >> $logfile
 403 }
 404
 405 log_file(){
 406     log BEGIN $1
 407     pr -n -t $1 >> $logfile
 408     log END $1
 409 }
 410
 411 echolog(){
 412     log "$@"
 413     echo "$@"
 414 }
 415
 416 warn(){
 417     log "WARNING: $*"
 418     WARNINGS="${WARNINGS}WARNING: $*\n"
 419 }
 420
 421 die(){
 422     echolog "$@"
 423     cat <<EOF
 424
 425 If you think configure made a mistake, make sure you are using the latest
 426 version from Git.  If the latest version fails, report the problem to the
 427 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 428 EOF
 429     if disabled logging; then
 430         cat <<EOF
 431 Rerun configure with logging enabled (do not use --disable-logging), and
 432 include the log this produces with your report.
 433 EOF
 434     else
 435         cat <<EOF
 436 Include the log file "$logfile" produced by configure as this will help
 437 solve the problem.
 438 EOF
 439     fi
 440     exit 1
 441 }
 442
 443 # Avoid locale weirdness, besides we really just want to translate ASCII.
 444 toupper(){
 445     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 446 }
 447
 448 tolower(){
 449     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 450 }
 451
 452 c_escape(){
 453     echo "$*" | sed 's/["\\]/\\\0/g'
 454 }
 455
 456 sh_quote(){
 457     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 458     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 459     echo "$v"
 460 }
 461
 462 cleanws(){
 463     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 464 }
 465
 466 filter(){
 467     pat=$1
 468     shift
 469     for v; do
 470         eval "case $v in $pat) echo $v ;; esac"
 471     done
 472 }
 473
 474 filter_out(){
 475     pat=$1
 476     shift
 477     for v; do
 478         eval "case $v in $pat) ;; *) echo $v ;; esac"
 479     done
 480 }
 481
 482 map(){
 483     m=$1
 484     shift
 485     for v; do eval $m; done
 486 }
 487
 488 add_suffix(){
 489     suffix=$1
 490     shift
 491     for v; do echo ${v}${suffix}; done
 492 }
 493
 494 set_all(){
 495     value=$1
 496     shift
 497     for var in $*; do
 498         eval $var=$value
 499     done
 500 }
 501
 502 set_weak(){
 503     value=$1
 504     shift
 505     for var; do
 506         eval : \${$var:=$value}
 507     done
 508 }
 509
 510 sanitize_var_name(){
 511     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 512 }
 513
 514 set_safe(){
 515     var=$1
 516     shift
 517     eval $(sanitize_var_name "$var")='$*'
 518 }
 519
 520 get_safe(){
 521     eval echo \$$(sanitize_var_name "$1")
 522 }
 523
 524 pushvar(){
 525     for pvar in $*; do
 526         eval level=\${${pvar}_level:=0}
 527         eval ${pvar}_${level}="\$$pvar"
 528         eval ${pvar}_level=$(($level+1))
 529     done
 530 }
 531
 532 popvar(){
 533     for pvar in $*; do
 534         eval level=\${${pvar}_level:-0}
 535         test $level = 0 && continue
 536         eval level=$(($level-1))
 537         eval $pvar="\${${pvar}_${level}}"
 538         eval ${pvar}_level=$level
 539         eval unset ${pvar}_${level}
 540     done
 541 }
 542
 543 enable(){
 544     set_all yes $*
 545 }
 546
 547 disable(){
 548     set_all no $*
 549 }
 550
 551 enable_weak(){
 552     set_weak yes $*
 553 }
 554
 555 disable_weak(){
 556     set_weak no $*
 557 }
 558
 559 enable_safe(){
 560     for var; do
 561         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 562     done
 563 }
 564
 565 disable_safe(){
 566     for var; do
 567         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 568     done
 569 }
 570
 571 do_enable_deep(){
 572     for var; do
 573         enabled $var && continue
 574         eval sel="\$${var}_select"
 575         eval sgs="\$${var}_suggest"
 576         pushvar var sgs
 577         enable_deep $sel
 578         popvar sgs
 579         enable_deep_weak $sgs
 580         popvar var
 581     done
 582 }
 583
 584 enable_deep(){
 585     do_enable_deep $*
 586     enable $*
 587 }
 588
 589 enable_deep_weak(){
 590     for var; do
 591         disabled $var && continue
 592         pushvar var
 593         do_enable_deep $var
 594         popvar var
 595         enable_weak $var
 596     done
 597 }
 598
 599 enabled(){
 600     test "${1#!}" = "$1" && op== || op=!=
 601     eval test "x\$${1#!}" $op "xyes"
 602 }
 603
 604 disabled(){
 605     test "${1#!}" = "$1" && op== || op=!=
 606     eval test "x\$${1#!}" $op "xno"
 607 }
 608
 609 enabled_all(){
 610     for opt; do
 611         enabled $opt || return 1
 612     done
 613 }
 614
 615 disabled_all(){
 616     for opt; do
 617         disabled $opt || return 1
 618     done
 619 }
 620
 621 enabled_any(){
 622     for opt; do
 623         enabled $opt && return 0
 624     done
 625 }
 626
 627 disabled_any(){
 628     for opt; do
 629         disabled $opt && return 0
 630     done
 631     return 1
 632 }
 633
 634 set_default(){
 635     for opt; do
 636         eval : \${$opt:=\$${opt}_default}
 637     done
 638 }
 639
 640 is_in(){
 641     value=$1
 642     shift
 643     for var in $*; do
 644         [ $var = $value ] && return 0
 645     done
 646     return 1
 647 }
 648
 649 do_check_deps(){
 650     for cfg; do
 651         cfg="${cfg#!}"
 652         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 653         disabled ${cfg}_checking && continue
 654         enable ${cfg}_checking
 655         append allopts $cfg
 656
 657         eval dep_all="\$${cfg}_deps"
 658         eval dep_any="\$${cfg}_deps_any"
 659         eval dep_sel="\$${cfg}_select"
 660         eval dep_sgs="\$${cfg}_suggest"
 661         eval dep_ifa="\$${cfg}_if"
 662         eval dep_ifn="\$${cfg}_if_any"
 663
 664         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 665         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 666         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 667
 668         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 669         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 670         enabled_all  $dep_all || disable $cfg
 671         enabled_any  $dep_any || disable $cfg
 672         disabled_any $dep_sel && disable $cfg
 673
 674         if enabled $cfg; then
 675             enable_deep $dep_sel
 676             enable_deep_weak $dep_sgs
 677         fi
 678
 679         disable ${cfg}_checking
 680     done
 681 }
 682
 683 check_deps(){
 684     unset allopts
 685
 686     do_check_deps "$@"
 687
 688     for cfg in $allopts; do
 689         enabled $cfg || continue
 690         eval dep_extralibs="\$${cfg}_extralibs"
 691         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 692     done
 693 }
 694
 695 print_config(){
 696     pfx=$1
 697     files=$2
 698     shift 2
 699     map 'eval echo "$v \${$v:-no}"' "$@" |
 700     awk "BEGIN { split(\"$files\", files) }
 701         {
 702             c = \"$pfx\" toupper(\$1);
 703             v = \$2;
 704             sub(/yes/, 1, v);
 705             sub(/no/,  0, v);
 706             for (f in files) {
 707                 file = files[f];
 708                 if (file ~ /\\.h\$/) {
 709                     printf(\"#define %s %d\\n\", c, v) >>file;
 710                 } else if (file ~ /\\.asm\$/) {
 711                     printf(\"%%define %s %d\\n\", c, v) >>file;
 712                 } else if (file ~ /\\.mak\$/) {
 713                     n = -v ? \"\" : \"!\";
 714                     printf(\"%s%s=yes\\n\", n, c) >>file;
 715                 } else if (file ~ /\\.texi\$/) {
 716                     pre = -v ? \"\" : \"@c \";
 717                     yesno = \$2;
 718                     c2 = tolower(c);
 719                     gsub(/_/, \"-\", c2);
 720                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 721                 }
 722             }
 723         }"
 724 }
 725
 726 print_enabled(){
 727     suf=$1
 728     shift
 729     for v; do
 730         enabled $v && printf "%s\n" ${v%$suf};
 731     done
 732 }
 733
 734 append(){
 735     var=$1
 736     shift
 737     eval "$var=\"\$$var $*\""
 738 }
 739
 740 prepend(){
 741     var=$1
 742     shift
 743     eval "$var=\"$* \$$var\""
 744 }
 745
 746 unique(){
 747     var=$1
 748     uniq_list=""
 749     for tok in $(eval echo \$$var); do
 750         uniq_list="$(filter_out $tok $uniq_list) $tok"
 751     done
 752     eval "$var=\"${uniq_list}\""
 753 }
 754
 755 add_cppflags(){
 756     append CPPFLAGS "$@"
 757 }
 758
 759 add_cflags(){
 760     append CFLAGS $($cflags_filter "$@")
 761 }
 762
 763 add_cxxflags(){
 764     append CXXFLAGS $($cflags_filter "$@")
 765 }
 766
 767 add_asflags(){
 768     append ASFLAGS $($asflags_filter "$@")
 769 }
 770
 771 add_ldflags(){
 772     append LDFLAGS $($ldflags_filter "$@")
 773 }
 774
 775 add_ldexeflags(){
 776     append LDEXEFLAGS $($ldflags_filter "$@")
 777 }
 778
 779 add_stripflags(){
 780     append ASMSTRIPFLAGS "$@"
 781 }
 782
 783 add_extralibs(){
 784     prepend extralibs $($ldflags_filter "$@")
 785 }
 786
 787 add_host_cppflags(){
 788     append host_cppflags "$@"
 789 }
 790
 791 add_host_cflags(){
 792     append host_cflags $($host_cflags_filter "$@")
 793 }
 794
 795 add_host_ldflags(){
 796     append host_ldflags $($host_ldflags_filter "$@")
 797 }
 798
 799 add_compat(){
 800     append compat_objs $1
 801     shift
 802     map 'add_cppflags -D$v' "$@"
 803 }
 804
 805 check_cmd(){
 806     log "$@"
 807     "$@" >> $logfile 2>&1
 808 }
 809
 810 check_stat(){
 811     log check_stat "$@"
 812     stat "$1" >> $logfile 2>&1
 813 }
 814
 815 cc_o(){
 816     eval printf '%s\\n' $CC_O
 817 }
 818
 819 cc_e(){
 820     eval printf '%s\\n' $CC_E
 821 }
 822
 823 check_cc(){
 824     log check_cc "$@"
 825     cat > $TMPC
 826     log_file $TMPC
 827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 828 }
 829
 830 check_cxx(){
 831     log check_cxx "$@"
 832     cat > $TMPCPP
 833     log_file $TMPCPP
 834     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 835 }
 836
 837 check_oc(){
 838     log check_oc "$@"
 839     cat > $TMPM
 840     log_file $TMPM
 841     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 842 }
 843
 844 check_cpp(){
 845     log check_cpp "$@"
 846     cat > $TMPC
 847     log_file $TMPC
 848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 849 }
 850
 851 as_o(){
 852     eval printf '%s\\n' $AS_O
 853 }
 854
 855 check_as(){
 856     log check_as "$@"
 857     cat > $TMPS
 858     log_file $TMPS
 859     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 860 }
 861
 862 check_inline_asm(){
 863     log check_inline_asm "$@"
 864     name="$1"
 865     code="$2"
 866     shift 2
 867     disable $name
 868     check_cc "$@" <<EOF && enable $name
 869 void foo(void){ __asm__ volatile($code); }
 870 EOF
 871 }
 872
 873 check_insn(){
 874     log check_insn "$@"
 875     check_inline_asm ${1}_inline "\"$2\""
 876     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 877 }
 878
 879 check_yasm(){
 880     log check_yasm "$@"
 881     echo "$1" > $TMPS
 882     log_file $TMPS
 883     shift 1
 884     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 885 }
 886
 887 ld_o(){
 888     eval printf '%s\\n' $LD_O
 889 }
 890
 891 check_ld(){
 892     log check_ld "$@"
 893     type=$1
 894     shift 1
 895     flags=$(filter_out '-l*|*.so' $@)
 896     libs=$(filter '-l*|*.so' $@)
 897     check_$type $($cflags_filter $flags) || return
 898     flags=$($ldflags_filter $flags)
 899     libs=$($ldflags_filter $libs)
 900     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 901 }
 902
 903 print_include(){
 904     hdr=$1
 905     test "${hdr%.h}" = "${hdr}" &&
 906         echo "#include $hdr"    ||
 907         echo "#include <$hdr>"
 908 }
 909
 910 check_code(){
 911     log check_code "$@"
 912     check=$1
 913     headers=$2
 914     code=$3
 915     shift 3
 916     {
 917         for hdr in $headers; do
 918             print_include $hdr
 919         done
 920         echo "int main(void) { $code; return 0; }"
 921     } | check_$check "$@"
 922 }
 923
 924 check_cppflags(){
 925     log check_cppflags "$@"
 926     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 927 int x;
 928 EOF
 929 }
 930
 931 test_cflags(){
 932     log test_cflags "$@"
 933     set -- $($cflags_filter "$@")
 934     check_cc "$@" <<EOF
 935 int x;
 936 EOF
 937 }
 938
 939 check_cflags(){
 940     log check_cflags "$@"
 941     test_cflags "$@" && add_cflags "$@"
 942 }
 943
 944 check_cxxflags(){
 945     log check_cxxflags "$@"
 946     set -- $($cflags_filter "$@")
 947     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 948 int x;
 949 EOF
 950 }
 951
 952 test_ldflags(){
 953     log test_ldflags "$@"
 954     check_ld "cc" "$@" <<EOF
 955 int main(void){ return 0; }
 956 EOF
 957 }
 958
 959 check_ldflags(){
 960     log check_ldflags "$@"
 961     test_ldflags "$@" && add_ldflags "$@"
 962 }
 963
 964 test_stripflags(){
 965     log test_stripflags "$@"
 966     # call check_cc to get a fresh TMPO
 967     check_cc <<EOF
 968 int main(void) { return 0; }
 969 EOF
 970     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 971 }
 972
 973 check_stripflags(){
 974     log check_stripflags "$@"
 975     test_stripflags "$@" && add_stripflags "$@"
 976 }
 977
 978 check_header(){
 979     log check_header "$@"
 980     header=$1
 981     shift
 982     disable_safe $header
 983     check_cpp "$@" <<EOF && enable_safe $header
 984 #include <$header>
 985 int x;
 986 EOF
 987 }
 988
 989 check_header_oc(){
 990     log check_header_oc "$@"
 991     rm -f -- "$TMPO"
 992     header=$1
 993     shift
 994     disable_safe $header
 995     {
 996        echo "#include <$header>"
 997        echo "int main(void) { return 0; }"
 998     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 999 }
1000
1001 check_func(){
1002     log check_func "$@"
1003     func=$1
1004     shift
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 extern int $func();
1008 int main(void){ $func(); }
1009 EOF
1010 }
1011
1012 check_mathfunc(){
1013     log check_mathfunc "$@"
1014     func=$1
1015     narg=$2
1016     shift 2
1017     test $narg = 2 && args="f, g" || args="f"
1018     disable $func
1019     check_ld "cc" "$@" <<EOF && enable $func
1020 #include <math.h>
1021 float foo(float f, float g) { return $func($args); }
1022 int main(void){ return (int) foo; }
1023 EOF
1024 }
1025
1026 check_func_headers(){
1027     log check_func_headers "$@"
1028     headers=$1
1029     funcs=$2
1030     shift 2
1031     {
1032         for hdr in $headers; do
1033             print_include $hdr
1034         done
1035         for func in $funcs; do
1036             echo "long check_$func(void) { return (long) $func; }"
1037         done
1038         echo "int main(void) { return 0; }"
1039     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1040 }
1041
1042 check_class_headers_cpp(){
1043     log check_class_headers_cpp "$@"
1044     headers=$1
1045     classes=$2
1046     shift 2
1047     {
1048         for hdr in $headers; do
1049             echo "#include <$hdr>"
1050         done
1051         echo "int main(void) { "
1052         i=1
1053         for class in $classes; do
1054             echo "$class obj$i;"
1055             i=$(expr $i + 1)
1056         done
1057         echo "return 0; }"
1058     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1059 }
1060
1061 check_cpp_condition(){
1062     log check_cpp_condition "$@"
1063     header=$1
1064     condition=$2
1065     shift 2
1066     check_cpp "$@" <<EOF
1067 #include <$header>
1068 #if !($condition)
1069 #error "unsatisfied condition: $condition"
1070 #endif
1071 EOF
1072 }
1073
1074 check_lib(){
1075     log check_lib "$@"
1076     header="$1"
1077     func="$2"
1078     shift 2
1079     check_header $header && check_func $func "$@" && add_extralibs "$@"
1080 }
1081
1082 check_lib2(){
1083     log check_lib2 "$@"
1084     headers="$1"
1085     funcs="$2"
1086     shift 2
1087     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1088 }
1089
1090 check_lib_cpp(){
1091     log check_lib_cpp "$@"
1092     headers="$1"
1093     classes="$2"
1094     shift 2
1095     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1096 }
1097
1098 check_pkg_config(){
1099     log check_pkg_config "$@"
1100     pkgandversion="$1"
1101     pkg="${1%% *}"
1102     headers="$2"
1103     funcs="$3"
1104     shift 3
1105     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1106     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1107     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1108     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1109         set_safe ${pkg}_cflags $pkg_cflags   &&
1110         set_safe ${pkg}_libs   $pkg_libs
1111 }
1112
1113 check_exec(){
1114     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1115 }
1116
1117 check_exec_crash(){
1118     code=$(cat)
1119
1120     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1121     # are safe but may not be available everywhere.  Thus we use
1122     # raise(SIGTERM) instead.  The check is run in a subshell so we
1123     # can redirect the "Terminated" message from the shell.  SIGBUS
1124     # is not defined by standard C so it is used conditionally.
1125
1126     (check_exec "$@") >> $logfile 2>&1 <<EOF
1127 #include <signal.h>
1128 static void sighandler(int sig){
1129     raise(SIGTERM);
1130 }
1131 int foo(void){
1132     $code
1133 }
1134 int (*func_ptr)(void) = foo;
1135 int main(void){
1136     signal(SIGILL, sighandler);
1137     signal(SIGFPE, sighandler);
1138     signal(SIGSEGV, sighandler);
1139 #ifdef SIGBUS
1140     signal(SIGBUS, sighandler);
1141 #endif
1142     return func_ptr();
1143 }
1144 EOF
1145 }
1146
1147 check_type(){
1148     log check_type "$@"
1149     headers=$1
1150     type=$2
1151     shift 2
1152     disable_safe "$type"
1153     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1154 }
1155
1156 check_struct(){
1157     log check_struct "$@"
1158     headers=$1
1159     struct=$2
1160     member=$3
1161     shift 3
1162     disable_safe "${struct}_${member}"
1163     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1164         enable_safe "${struct}_${member}"
1165 }
1166
1167 check_builtin(){
1168     log check_builtin "$@"
1169     name=$1
1170     headers=$2
1171     builtin=$3
1172     shift 3
1173     disable "$name"
1174     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1175 }
1176
1177 check_compile_assert(){
1178     log check_compile_assert "$@"
1179     name=$1
1180     headers=$2
1181     condition=$3
1182     shift 3
1183     disable "$name"
1184     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1185 }
1186
1187 require(){
1188     name="$1"
1189     header="$2"
1190     func="$3"
1191     shift 3
1192     check_lib $header $func "$@" || die "ERROR: $name not found"
1193 }
1194
1195 require2(){
1196     name="$1"
1197     headers="$2"
1198     func="$3"
1199     shift 3
1200     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1201 }
1202
1203 require_cpp(){
1204     name="$1"
1205     headers="$2"
1206     classes="$3"
1207     shift 3
1208     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1209 }
1210
1211 use_pkg_config(){
1212     pkg="$1"
1213     check_pkg_config "$@" || return 1
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 require_pkg_config(){
1219     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1220 }
1221
1222 require_libfreetype(){
1223     log require_libfreetype "$@"
1224     pkg="freetype2"
1225     check_cmd $pkg_config --exists --print-errors $pkg \
1226       || die "ERROR: $pkg not found"
1227     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1228     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1229     {
1230         echo "#include <ft2build.h>"
1231         echo "#include FT_FREETYPE_H"
1232         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1233         echo "int main(void) { return 0; }"
1234     } | check_ld "cc" $pkg_cflags $pkg_libs \
1235       && set_safe ${pkg}_cflags $pkg_cflags \
1236       && set_safe ${pkg}_libs   $pkg_libs \
1237       || die "ERROR: $pkg not found"
1238     add_cflags    $(get_safe ${pkg}_cflags)
1239     add_extralibs $(get_safe ${pkg}_libs)
1240 }
1241
1242 hostcc_e(){
1243     eval printf '%s\\n' $HOSTCC_E
1244 }
1245
1246 hostcc_o(){
1247     eval printf '%s\\n' $HOSTCC_O
1248 }
1249
1250 check_host_cc(){
1251     log check_host_cc "$@"
1252     cat > $TMPC
1253     log_file $TMPC
1254     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1255 }
1256
1257 check_host_cpp(){
1258     log check_host_cpp "$@"
1259     cat > $TMPC
1260     log_file $TMPC
1261     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1262 }
1263
1264 check_host_cppflags(){
1265     log check_host_cppflags "$@"
1266     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1267 int x;
1268 EOF
1269 }
1270
1271 check_host_cflags(){
1272     log check_host_cflags "$@"
1273     set -- $($host_cflags_filter "$@")
1274     check_host_cc "$@" <<EOF && append host_cflags "$@"
1275 int x;
1276 EOF
1277 }
1278
1279 check_host_cpp_condition(){
1280     log check_host_cpp_condition "$@"
1281     header=$1
1282     condition=$2
1283     shift 2
1284     check_host_cpp "$@" <<EOF
1285 #include <$header>
1286 #if !($condition)
1287 #error "unsatisfied condition: $condition"
1288 #endif
1289 EOF
1290 }
1291
1292 apply(){
1293     file=$1
1294     shift
1295     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1296 }
1297
1298 cp_if_changed(){
1299     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1300     mkdir -p "$(dirname $2)"
1301     $cp_f "$1" "$2"
1302 }
1303
1304 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1305 # system-dependent things.
1306
1307 COMPONENT_LIST="
1308     bsfs
1309     decoders
1310     demuxers
1311     encoders
1312     filters
1313     hwaccels
1314     indevs
1315     muxers
1316     outdevs
1317     parsers
1318     protocols
1319 "
1320
1321 EXAMPLE_LIST="
1322     avio_reading_example
1323     decoding_encoding_example
1324     demuxing_decoding_example
1325     extract_mvs_example
1326     filter_audio_example
1327     filtering_audio_example
1328     filtering_video_example
1329     metadata_example
1330     muxing_example
1331     remuxing_example
1332     resampling_audio_example
1333     scaling_video_example
1334     transcode_aac_example
1335     transcoding_example
1336 "
1337
1338 EXTERNAL_LIBRARY_LIST="
1339     avisynth
1340     bzlib
1341     crystalhd
1342     decklink
1343     frei0r
1344     gnutls
1345     iconv
1346     ladspa
1347     libaacplus
1348     libass
1349     libbluray
1350     libbs2b
1351     libcaca
1352     libcdio
1353     libcelt
1354     libdc1394
1355     libfaac
1356     libfdk_aac
1357     libflite
1358     libfontconfig
1359     libfreetype
1360     libfribidi
1361     libgme
1362     libgsm
1363     libiec61883
1364     libilbc
1365     libmodplug
1366     libmp3lame
1367     libnut
1368     libopencore_amrnb
1369     libopencore_amrwb
1370     libopencv
1371     libopenh264
1372     libopenjpeg
1373     libopus
1374     libpulse
1375     libquvi
1376     librtmp
1377     libschroedinger
1378     libshine
1379     libsmbclient
1380     libsoxr
1381     libspeex
1382     libssh
1383     libstagefright_h264
1384     libtheora
1385     libtwolame
1386     libutvideo
1387     libv4l2
1388     libvidstab
1389     libvo_aacenc
1390     libvo_amrwbenc
1391     libvorbis
1392     libvpx
1393     libwavpack
1394     libwebp
1395     libx264
1396     libx265
1397     libxavs
1398     libxcb
1399     libxcb_shm
1400     libxcb_shape
1401     libxcb_xfixes
1402     libxvid
1403     libzmq
1404     libzvbi
1405     lzma
1406     nvenc
1407     openal
1408     opencl
1409     opengl
1410     openssl
1411     sdl
1412     x11grab
1413     xlib
1414     zlib
1415 "
1416
1417 DOCUMENT_LIST="
1418     doc
1419     htmlpages
1420     manpages
1421     podpages
1422     txtpages
1423 "
1424
1425 FEATURE_LIST="
1426     ftrapv
1427     gray
1428     hardcoded_tables
1429     runtime_cpudetect
1430     safe_bitstream_reader
1431     shared
1432     small
1433     static
1434     swscale_alpha
1435 "
1436
1437 HWACCEL_LIST="
1438     dxva2
1439     vaapi
1440     vda
1441     vdpau
1442     xvmc
1443 "
1444
1445 LIBRARY_LIST="
1446     avcodec
1447     avdevice
1448     avfilter
1449     avformat
1450     avresample
1451     avutil
1452     postproc
1453     swresample
1454     swscale
1455 "
1456
1457 LICENSE_LIST="
1458     gpl
1459     nonfree
1460     version3
1461 "
1462
1463 PROGRAM_LIST="
1464     ffplay
1465     ffprobe
1466     ffserver
1467     ffmpeg
1468 "
1469
1470 SUBSYSTEM_LIST="
1471     dct
1472     dwt
1473     error_resilience
1474     faan
1475     fast_unaligned
1476     fft
1477     lsp
1478     lzo
1479     mdct
1480     pixelutils
1481     network
1482     rdft
1483 "
1484
1485 CONFIG_LIST="
1486     $COMPONENT_LIST
1487     $DOCUMENT_LIST
1488     $EXAMPLE_LIST
1489     $EXTERNAL_LIBRARY_LIST
1490     $FEATURE_LIST
1491     $HWACCEL_LIST
1492     $LICENSE_LIST
1493     $LIBRARY_LIST
1494     $PROGRAM_LIST
1495     $SUBSYSTEM_LIST
1496     fontconfig
1497     incompatible_libav_abi
1498     memalign_hack
1499     memory_poisoning
1500     neon_clobber_test
1501     pic
1502     pod2man
1503     raise_major
1504     thumb
1505     xmm_clobber_test
1506 "
1507
1508 THREADS_LIST="
1509     pthreads
1510     os2threads
1511     w32threads
1512 "
1513
1514 ATOMICS_LIST="
1515     atomics_gcc
1516     atomics_suncc
1517     atomics_win32
1518 "
1519
1520 ARCH_LIST="
1521     aarch64
1522     alpha
1523     arm
1524     avr32
1525     avr32_ap
1526     avr32_uc
1527     bfin
1528     ia64
1529     m68k
1530     mips
1531     mips64
1532     parisc
1533     ppc
1534     ppc64
1535     s390
1536     sh4
1537     sparc
1538     sparc64
1539     tilegx
1540     tilepro
1541     tomi
1542     x86
1543     x86_32
1544     x86_64
1545 "
1546
1547 ARCH_EXT_LIST_ARM="
1548     armv5te
1549     armv6
1550     armv6t2
1551     armv8
1552     neon
1553     vfp
1554     vfpv3
1555     setend
1556 "
1557
1558 ARCH_EXT_LIST_MIPS="
1559     mipsfpu
1560     mips32r2
1561     mipsdspr1
1562     mipsdspr2
1563 "
1564
1565 ARCH_EXT_LIST_X86_SIMD="
1566     amd3dnow
1567     amd3dnowext
1568     avx
1569     avx2
1570     fma3
1571     fma4
1572     mmx
1573     mmxext
1574     sse
1575     sse2
1576     sse3
1577     sse4
1578     sse42
1579     ssse3
1580     xop
1581 "
1582
1583 ARCH_EXT_LIST_PPC="
1584     altivec
1585     dcbzl
1586     ldbrx
1587     ppc4xx
1588     vsx
1589 "
1590
1591 ARCH_EXT_LIST_X86="
1592     $ARCH_EXT_LIST_X86_SIMD
1593     cpunop
1594     i686
1595 "
1596
1597 ARCH_EXT_LIST="
1598     $ARCH_EXT_LIST_ARM
1599     $ARCH_EXT_LIST_PPC
1600     $ARCH_EXT_LIST_X86
1601     $ARCH_EXT_LIST_MIPS
1602     loongson
1603 "
1604
1605 ARCH_FEATURES="
1606     aligned_stack
1607     fast_64bit
1608     fast_clz
1609     fast_cmov
1610     local_aligned_8
1611     local_aligned_16
1612     local_aligned_32
1613     simd_align_16
1614 "
1615
1616 BUILTIN_LIST="
1617     atomic_cas_ptr
1618     atomic_compare_exchange
1619     machine_rw_barrier
1620     MemoryBarrier
1621     mm_empty
1622     rdtsc
1623     sarestart
1624     sync_val_compare_and_swap
1625 "
1626 HAVE_LIST_CMDLINE="
1627     inline_asm
1628     symver
1629     yasm
1630 "
1631
1632 HAVE_LIST_PUB="
1633     bigendian
1634     fast_unaligned
1635     incompatible_libav_abi
1636 "
1637
1638 HEADERS_LIST="
1639     alsa_asoundlib_h
1640     altivec_h
1641     arpa_inet_h
1642     asm_types_h
1643     cdio_paranoia_h
1644     cdio_paranoia_paranoia_h
1645     dev_bktr_ioctl_bt848_h
1646     dev_bktr_ioctl_meteor_h
1647     dev_ic_bt8xx_h
1648     dev_video_bktr_ioctl_bt848_h
1649     dev_video_meteor_ioctl_meteor_h
1650     direct_h
1651     dlfcn_h
1652     dxva_h
1653     ES2_gl_h
1654     gsm_h
1655     io_h
1656     mach_mach_time_h
1657     machine_ioctl_bt848_h
1658     machine_ioctl_meteor_h
1659     malloc_h
1660     openjpeg_1_5_openjpeg_h
1661     OpenGL_gl3_h
1662     poll_h
1663     sndio_h
1664     soundcard_h
1665     sys_mman_h
1666     sys_param_h
1667     sys_resource_h
1668     sys_select_h
1669     sys_soundcard_h
1670     sys_time_h
1671     sys_un_h
1672     sys_videoio_h
1673     termios_h
1674     udplite_h
1675     unistd_h
1676     windows_h
1677     winsock2_h
1678 "
1679
1680 INTRINSICS_LIST="
1681     intrinsics_neon
1682 "
1683
1684 MATH_FUNCS="
1685     atanf
1686     atan2f
1687     cbrt
1688     cbrtf
1689     cosf
1690     exp2
1691     exp2f
1692     expf
1693     isinf
1694     isnan
1695     ldexpf
1696     llrint
1697     llrintf
1698     log2
1699     log2f
1700     log10f
1701     lrint
1702     lrintf
1703     powf
1704     rint
1705     round
1706     roundf
1707     sinf
1708     trunc
1709     truncf
1710 "
1711
1712 SYSTEM_FUNCS="
1713     access
1714     aligned_malloc
1715     clock_gettime
1716     closesocket
1717     CommandLineToArgvW
1718     CoTaskMemFree
1719     CryptGenRandom
1720     dlopen
1721     fcntl
1722     flt_lim
1723     fork
1724     getaddrinfo
1725     gethrtime
1726     getopt
1727     GetProcessAffinityMask
1728     GetProcessMemoryInfo
1729     GetProcessTimes
1730     getrusage
1731     getservbyport
1732     GetSystemTimeAsFileTime
1733     gettimeofday
1734     glob
1735     glXGetProcAddress
1736     gmtime_r
1737     inet_aton
1738     isatty
1739     jack_port_get_latency_range
1740     kbhit
1741     localtime_r
1742     lzo1x_999_compress
1743     mach_absolute_time
1744     MapViewOfFile
1745     memalign
1746     mkstemp
1747     mmap
1748     mprotect
1749     nanosleep
1750     PeekNamedPipe
1751     posix_memalign
1752     pthread_cancel
1753     sched_getaffinity
1754     SetConsoleTextAttribute
1755     setmode
1756     setrlimit
1757     Sleep
1758     strerror_r
1759     sysconf
1760     sysctl
1761     usleep
1762     VirtualAlloc
1763     wglGetProcAddress
1764 "
1765
1766 TOOLCHAIN_FEATURES="
1767     as_dn_directive
1768     as_func
1769     asm_mod_q
1770     attribute_may_alias
1771     attribute_packed
1772     ebp_available
1773     ebx_available
1774     gnu_as
1775     gnu_windres
1776     ibm_asm
1777     inline_asm_labels
1778     inline_asm_nonlocal_labels
1779     inline_asm_direct_symbol_refs
1780     pragma_deprecated
1781     rsync_contimeout
1782     symver_asm_label
1783     symver_gnu_asm
1784     vfp_args
1785     xform_asm
1786     xmm_clobbers
1787 "
1788
1789 TYPES_LIST="
1790     CONDITION_VARIABLE_Ptr
1791     DXVA_PicParams_HEVC
1792     socklen_t
1793     struct_addrinfo
1794     struct_group_source_req
1795     struct_ip_mreq_source
1796     struct_ipv6_mreq
1797     struct_pollfd
1798     struct_rusage_ru_maxrss
1799     struct_sctp_event_subscribe
1800     struct_sockaddr_in6
1801     struct_sockaddr_sa_len
1802     struct_sockaddr_storage
1803     struct_stat_st_mtim_tv_nsec
1804     struct_v4l2_frmivalenum_discrete
1805 "
1806
1807 HAVE_LIST="
1808     $ARCH_EXT_LIST
1809     $(add_suffix _external $ARCH_EXT_LIST)
1810     $(add_suffix _inline   $ARCH_EXT_LIST)
1811     $ARCH_FEATURES
1812     $ATOMICS_LIST
1813     $BUILTIN_LIST
1814     $HAVE_LIST_CMDLINE
1815     $HAVE_LIST_PUB
1816     $HEADERS_LIST
1817     $INTRINSICS_LIST
1818     $MATH_FUNCS
1819     $SYSTEM_FUNCS
1820     $THREADS_LIST
1821     $TOOLCHAIN_FEATURES
1822     $TYPES_LIST
1823     atomics_native
1824     dos_paths
1825     dxva2api_cobj
1826     dxva2_lib
1827     libc_msvcrt
1828     libdc1394_1
1829     libdc1394_2
1830     makeinfo
1831     makeinfo_html
1832     perl
1833     pod2man
1834     sdl
1835     section_data_rel_ro
1836     texi2html
1837     threads
1838     vdpau_x11
1839     xlib
1840 "
1841
1842 # options emitted with CONFIG_ prefix but not available on the command line
1843 CONFIG_EXTRA="
1844     aandcttables
1845     ac3dsp
1846     audio_frame_queue
1847     audiodsp
1848     blockdsp
1849     bswapdsp
1850     cabac
1851     dvprofile
1852     exif
1853     faandct
1854     faanidct
1855     fdctdsp
1856     frame_thread_encoder
1857     gcrypt
1858     golomb
1859     gplv3
1860     h263dsp
1861     h264chroma
1862     h264dsp
1863     h264pred
1864     h264qpel
1865     hpeldsp
1866     huffman
1867     huffyuvdsp
1868     huffyuvencdsp
1869     idctdsp
1870     iirfilter
1871     imdct15
1872     intrax8
1873     lgplv3
1874     llauddsp
1875     llviddsp
1876     lpc
1877     me_cmp
1878     mpeg_er
1879     mpegaudio
1880     mpegaudiodsp
1881     mpegvideo
1882     mpegvideoenc
1883     nettle
1884     pixblockdsp
1885     qpeldsp
1886     rangecoder
1887     riffdec
1888     riffenc
1889     rtpdec
1890     rtpenc_chain
1891     sinewin
1892     startcode
1893     tpeldsp
1894     videodsp
1895     vp3dsp
1896     wma_freqs
1897 "
1898
1899 CMDLINE_SELECT="
1900     $ARCH_EXT_LIST
1901     $CONFIG_LIST
1902     $HAVE_LIST_CMDLINE
1903     $THREADS_LIST
1904     asm
1905     cross_compile
1906     debug
1907     extra_warnings
1908     logging
1909     lto
1910     optimizations
1911     rpath
1912     stripping
1913 "
1914
1915 PATHS_LIST="
1916     bindir
1917     datadir
1918     docdir
1919     incdir
1920     libdir
1921     mandir
1922     prefix
1923     shlibdir
1924 "
1925
1926 CMDLINE_SET="
1927     $PATHS_LIST
1928     ar
1929     arch
1930     as
1931     assert_level
1932     build_suffix
1933     cc
1934     cpu
1935     cross_prefix
1936     cxx
1937     dep_cc
1938     doxygen
1939     extra_version
1940     gas
1941     host_cc
1942     host_cflags
1943     host_ld
1944     host_ldflags
1945     host_libs
1946     host_os
1947     install
1948     ld
1949     logfile
1950     malloc_prefix
1951     nm
1952     optflags
1953     pkg_config
1954     pkg_config_flags
1955     progs_suffix
1956     random_seed
1957     ranlib
1958     samples
1959     strip
1960     sws_max_filter_size
1961     sysinclude
1962     sysroot
1963     target_exec
1964     target_os
1965     target_path
1966     target_samples
1967     tempprefix
1968     toolchain
1969     valgrind
1970     yasmexe
1971 "
1972
1973 CMDLINE_APPEND="
1974     extra_cflags
1975     extra_cxxflags
1976     host_cppflags
1977 "
1978
1979 # code dependency declarations
1980
1981 # architecture extensions
1982
1983 armv5te_deps="arm"
1984 armv6_deps="arm"
1985 armv6t2_deps="arm"
1986 armv8_deps="aarch64"
1987 neon_deps_any="aarch64 arm"
1988 intrinsics_neon_deps="neon"
1989 vfp_deps_any="aarch64 arm"
1990 vfpv3_deps="vfp"
1991 setend_deps="arm"
1992
1993 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1994
1995 mipsfpu_deps="mips"
1996 mips32r2_deps="mips"
1997 mipsdspr1_deps="mips"
1998 mipsdspr2_deps="mips"
1999
2000 altivec_deps="ppc"
2001 ppc4xx_deps="ppc"
2002 vsx_deps="ppc"
2003
2004 cpunop_deps="i686"
2005 x86_64_select="i686"
2006 x86_64_suggest="fast_cmov"
2007
2008 amd3dnow_deps="mmx"
2009 amd3dnowext_deps="amd3dnow"
2010 i686_deps="x86"
2011 mmx_deps="x86"
2012 mmxext_deps="mmx"
2013 sse_deps="mmxext"
2014 sse2_deps="sse"
2015 sse3_deps="sse2"
2016 ssse3_deps="sse3"
2017 sse4_deps="ssse3"
2018 sse42_deps="sse4"
2019 avx_deps="sse42"
2020 xop_deps="avx"
2021 fma3_deps="avx"
2022 fma4_deps="avx"
2023 avx2_deps="avx"
2024
2025 mmx_external_deps="yasm"
2026 mmx_inline_deps="inline_asm"
2027 mmx_suggest="mmx_external mmx_inline"
2028
2029 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2030     eval dep=\$${ext}_deps
2031     eval ${ext}_external_deps='"${dep}_external"'
2032     eval ${ext}_inline_deps='"${dep}_inline"'
2033     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2034 done
2035
2036 aligned_stack_if_any="aarch64 ppc x86"
2037 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2038 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2039 fast_unaligned_if_any="aarch64 ppc x86"
2040 simd_align_16_if_any="altivec neon sse"
2041
2042 # system capabilities
2043
2044 symver_if_any="symver_asm_label symver_gnu_asm"
2045
2046 # threading support
2047 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2048 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2049 atomics_win32_if="MemoryBarrier"
2050 atomics_native_if_any="$ATOMICS_LIST"
2051 w32threads_deps="atomics_native"
2052 threads_if_any="$THREADS_LIST"
2053
2054 # subsystems
2055 dct_select="rdft"
2056 error_resilience_select="me_cmp"
2057 faandct_deps="faan fdctdsp"
2058 faanidct_deps="faan idctdsp"
2059 frame_thread_encoder_deps="encoders threads"
2060 intrax8_select="error_resilience"
2061 mdct_select="fft"
2062 rdft_select="fft"
2063 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2064 mpeg_er_select="error_resilience"
2065 mpegaudio_select="mpegaudiodsp"
2066 mpegaudiodsp_select="dct"
2067 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2068 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2069
2070 # decoders / encoders
2071 aac_decoder_select="imdct15 mdct sinewin"
2072 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2073 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2074 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2075 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2076 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2077 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2078 aic_decoder_select="golomb idctdsp"
2079 alac_encoder_select="lpc"
2080 als_decoder_select="bswapdsp"
2081 amrnb_decoder_select="lsp"
2082 amrwb_decoder_select="lsp"
2083 amv_decoder_select="sp5x_decoder exif"
2084 amv_encoder_select="aandcttables mpegvideoenc"
2085 ape_decoder_select="bswapdsp llauddsp"
2086 apng_decoder_select="zlib"
2087 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2088 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2089 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2090 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2091 atrac1_decoder_select="mdct sinewin"
2092 atrac3_decoder_select="mdct"
2093 atrac3p_decoder_select="mdct sinewin"
2094 avrn_decoder_select="exif"
2095 bink_decoder_select="blockdsp hpeldsp"
2096 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2097 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2098 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2099 cllc_decoder_select="bswapdsp"
2100 comfortnoise_encoder_select="lpc"
2101 cook_decoder_select="audiodsp mdct sinewin"
2102 cscd_decoder_select="lzo"
2103 cscd_decoder_suggest="zlib"
2104 dca_decoder_select="mdct"
2105 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2106 dnxhd_decoder_select="blockdsp idctdsp"
2107 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2108 dvvideo_decoder_select="dvprofile idctdsp"
2109 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2110 dxa_decoder_select="zlib"
2111 eac3_decoder_select="ac3_decoder"
2112 eac3_encoder_select="ac3_encoder"
2113 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2114 eatgq_decoder_select="aandcttables"
2115 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2116 exr_decoder_select="zlib"
2117 ffv1_decoder_select="golomb rangecoder"
2118 ffv1_encoder_select="rangecoder"
2119 ffvhuff_decoder_select="huffyuv_decoder"
2120 ffvhuff_encoder_select="huffyuv_encoder"
2121 fic_decoder_select="golomb"
2122 flac_decoder_select="golomb"
2123 flac_encoder_select="bswapdsp golomb lpc"
2124 flashsv_decoder_select="zlib"
2125 flashsv_encoder_select="zlib"
2126 flashsv2_encoder_select="zlib"
2127 flashsv2_decoder_select="zlib"
2128 flv_decoder_select="h263_decoder"
2129 flv_encoder_select="h263_encoder"
2130 fourxm_decoder_select="blockdsp bswapdsp"
2131 fraps_decoder_select="bswapdsp huffman"
2132 g2m_decoder_select="blockdsp idctdsp zlib"
2133 g729_decoder_select="audiodsp"
2134 h261_decoder_select="mpeg_er mpegvideo"
2135 h261_encoder_select="aandcttables mpegvideoenc"
2136 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2137 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2138 h263i_decoder_select="h263_decoder"
2139 h263p_encoder_select="h263_encoder"
2140 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2141 h264_decoder_suggest="error_resilience"
2142 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2143 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2144 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2145 iac_decoder_select="imc_decoder"
2146 imc_decoder_select="bswapdsp fft mdct sinewin"
2147 indeo3_decoder_select="hpeldsp"
2148 interplay_video_decoder_select="hpeldsp"
2149 jpegls_decoder_select="golomb mjpeg_decoder"
2150 jpegls_encoder_select="golomb"
2151 jv_decoder_select="blockdsp"
2152 lagarith_decoder_select="huffyuvdsp"
2153 ljpeg_encoder_select="aandcttables idctdsp"
2154 loco_decoder_select="golomb"
2155 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2156 metasound_decoder_select="lsp mdct sinewin"
2157 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2158 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2159 mjpeg_encoder_select="aandcttables mpegvideoenc"
2160 mjpegb_decoder_select="mjpeg_decoder"
2161 mlp_decoder_select="mlp_parser"
2162 motionpixels_decoder_select="bswapdsp"
2163 mp1_decoder_select="mpegaudio"
2164 mp1float_decoder_select="mpegaudio"
2165 mp2_decoder_select="mpegaudio"
2166 mp2float_decoder_select="mpegaudio"
2167 mp3_decoder_select="mpegaudio"
2168 mp3adu_decoder_select="mpegaudio"
2169 mp3adufloat_decoder_select="mpegaudio"
2170 mp3float_decoder_select="mpegaudio"
2171 mp3on4_decoder_select="mpegaudio"
2172 mp3on4float_decoder_select="mpegaudio"
2173 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2174 mpc8_decoder_select="mpegaudiodsp"
2175 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2176 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2177 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2178 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2179 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2180 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2181 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2182 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2183 mpeg4_encoder_select="h263_encoder"
2184 msmpeg4v1_decoder_select="h263_decoder"
2185 msmpeg4v2_decoder_select="h263_decoder"
2186 msmpeg4v2_encoder_select="h263_encoder"
2187 msmpeg4v3_decoder_select="h263_decoder"
2188 msmpeg4v3_encoder_select="h263_encoder"
2189 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2190 mxpeg_decoder_select="mjpeg_decoder"
2191 nellymoser_decoder_select="mdct sinewin"
2192 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2193 nuv_decoder_select="idctdsp lzo"
2194 on2avc_decoder_select="mdct"
2195 opus_decoder_deps="swresample"
2196 opus_decoder_select="imdct15"
2197 png_decoder_select="zlib"
2198 png_encoder_select="huffyuvencdsp zlib"
2199 prores_decoder_select="blockdsp idctdsp"
2200 prores_encoder_select="fdctdsp"
2201 qcelp_decoder_select="lsp"
2202 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2203 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2204 ra_144_decoder_select="audiodsp"
2205 ralf_decoder_select="golomb"
2206 rawvideo_decoder_select="bswapdsp"
2207 rtjpeg_decoder_select="me_cmp"
2208 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2209 rv10_encoder_select="h263_encoder"
2210 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2211 rv20_encoder_select="h263_encoder"
2212 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2213 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2214 shorten_decoder_select="golomb"
2215 sipr_decoder_select="lsp"
2216 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2217 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2218 sonic_decoder_select="golomb rangecoder"
2219 sonic_encoder_select="golomb rangecoder"
2220 sonic_ls_encoder_select="golomb rangecoder"
2221 sp5x_decoder_select="mjpeg_decoder"
2222 svq1_decoder_select="hpeldsp"
2223 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2224 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2225 svq3_decoder_suggest="zlib"
2226 tak_decoder_select="audiodsp"
2227 theora_decoder_select="vp3_decoder"
2228 thp_decoder_select="mjpeg_decoder"
2229 tiff_decoder_suggest="zlib lzma"
2230 tiff_encoder_suggest="zlib"
2231 truehd_decoder_select="mlp_parser"
2232 truemotion2_decoder_select="bswapdsp"
2233 truespeech_decoder_select="bswapdsp"
2234 tscc_decoder_select="zlib"
2235 twinvq_decoder_select="mdct lsp sinewin"
2236 utvideo_decoder_select="bswapdsp"
2237 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2238 vble_decoder_select="huffyuvdsp"
2239 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2240 vc1image_decoder_select="vc1_decoder"
2241 vorbis_decoder_select="mdct"
2242 vorbis_encoder_select="mdct"
2243 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2244 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2245 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2246 vp6a_decoder_select="vp6_decoder"
2247 vp6f_decoder_select="vp6_decoder"
2248 vp7_decoder_select="h264pred videodsp"
2249 vp8_decoder_select="h264pred videodsp"
2250 vp9_decoder_select="videodsp vp9_parser"
2251 webp_decoder_select="vp8_decoder"
2252 wmalossless_decoder_select="llauddsp"
2253 wmapro_decoder_select="mdct sinewin wma_freqs"
2254 wmav1_decoder_select="mdct sinewin wma_freqs"
2255 wmav1_encoder_select="mdct sinewin wma_freqs"
2256 wmav2_decoder_select="mdct sinewin wma_freqs"
2257 wmav2_encoder_select="mdct sinewin wma_freqs"
2258 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2259 wmv1_decoder_select="h263_decoder"
2260 wmv1_encoder_select="h263_encoder"
2261 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2262 wmv2_encoder_select="h263_encoder"
2263 wmv3_decoder_select="vc1_decoder"
2264 wmv3image_decoder_select="wmv3_decoder"
2265 zerocodec_decoder_select="zlib"
2266 zlib_decoder_select="zlib"
2267 zlib_encoder_select="zlib"
2268 zmbv_decoder_select="zlib"
2269 zmbv_encoder_select="zlib"
2270
2271 # hardware accelerators
2272 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2273 dxva2_deps="dxva2api_h"
2274 vaapi_deps="va_va_h"
2275 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2276 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2277 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2278 xvmc_deps="X11_extensions_XvMClib_h"
2279
2280 h263_vaapi_hwaccel_deps="vaapi"
2281 h263_vaapi_hwaccel_select="h263_decoder"
2282 h263_vdpau_hwaccel_deps="vdpau"
2283 h263_vdpau_hwaccel_select="h263_decoder"
2284 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2285 h264_dxva2_hwaccel_deps="dxva2"
2286 h264_dxva2_hwaccel_select="h264_decoder"
2287 h264_vaapi_hwaccel_deps="vaapi"
2288 h264_vaapi_hwaccel_select="h264_decoder"
2289 h264_vda_decoder_deps="vda"
2290 h264_vda_decoder_select="h264_decoder"
2291 h264_vda_hwaccel_deps="vda"
2292 h264_vda_hwaccel_select="h264_decoder"
2293 h264_vda_old_hwaccel_deps="vda"
2294 h264_vda_old_hwaccel_select="h264_decoder"
2295 h264_vdpau_decoder_deps="vdpau"
2296 h264_vdpau_decoder_select="h264_decoder"
2297 h264_vdpau_hwaccel_deps="vdpau"
2298 h264_vdpau_hwaccel_select="h264_decoder"
2299 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2300 hevc_dxva2_hwaccel_select="hevc_decoder"
2301 mpeg_vdpau_decoder_deps="vdpau"
2302 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2303 mpeg_xvmc_hwaccel_deps="xvmc"
2304 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2305 mpeg1_vdpau_decoder_deps="vdpau"
2306 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2307 mpeg1_vdpau_hwaccel_deps="vdpau"
2308 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2309 mpeg1_xvmc_hwaccel_deps="xvmc"
2310 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2311 mpeg2_crystalhd_decoder_select="crystalhd"
2312 mpeg2_dxva2_hwaccel_deps="dxva2"
2313 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2314 mpeg2_vaapi_hwaccel_deps="vaapi"
2315 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2316 mpeg2_vdpau_hwaccel_deps="vdpau"
2317 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2318 mpeg2_xvmc_hwaccel_deps="xvmc"
2319 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2320 mpeg4_crystalhd_decoder_select="crystalhd"
2321 mpeg4_vaapi_hwaccel_deps="vaapi"
2322 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2323 mpeg4_vdpau_decoder_deps="vdpau"
2324 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2325 mpeg4_vdpau_hwaccel_deps="vdpau"
2326 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2327 msmpeg4_crystalhd_decoder_select="crystalhd"
2328 vc1_crystalhd_decoder_select="crystalhd"
2329 vc1_dxva2_hwaccel_deps="dxva2"
2330 vc1_dxva2_hwaccel_select="vc1_decoder"
2331 vc1_vaapi_hwaccel_deps="vaapi"
2332 vc1_vaapi_hwaccel_select="vc1_decoder"
2333 vc1_vdpau_decoder_deps="vdpau"
2334 vc1_vdpau_decoder_select="vc1_decoder"
2335 vc1_vdpau_hwaccel_deps="vdpau"
2336 vc1_vdpau_hwaccel_select="vc1_decoder"
2337 wmv3_crystalhd_decoder_select="crystalhd"
2338 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2339 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2340 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2341 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2342
2343 # parsers
2344 h264_parser_select="h264_decoder"
2345 hevc_parser_select="hevc_decoder"
2346 mpegvideo_parser_select="mpegvideo"
2347 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2348 vc1_parser_select="mpegvideo startcode vc1_decoder"
2349
2350 # external libraries
2351 libaacplus_encoder_deps="libaacplus"
2352 libcelt_decoder_deps="libcelt"
2353 libfaac_encoder_deps="libfaac"
2354 libfaac_encoder_select="audio_frame_queue"
2355 libfdk_aac_decoder_deps="libfdk_aac"
2356 libfdk_aac_encoder_deps="libfdk_aac"
2357 libfdk_aac_encoder_select="audio_frame_queue"
2358 libgme_demuxer_deps="libgme"
2359 libgsm_decoder_deps="libgsm"
2360 libgsm_encoder_deps="libgsm"
2361 libgsm_ms_decoder_deps="libgsm"
2362 libgsm_ms_encoder_deps="libgsm"
2363 libilbc_decoder_deps="libilbc"
2364 libilbc_encoder_deps="libilbc"
2365 libmodplug_demuxer_deps="libmodplug"
2366 libmp3lame_encoder_deps="libmp3lame"
2367 libmp3lame_encoder_select="audio_frame_queue"
2368 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2369 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2370 libopencore_amrnb_encoder_select="audio_frame_queue"
2371 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2372 libopenh264_encoder_deps="libopenh264"
2373 libopenjpeg_decoder_deps="libopenjpeg"
2374 libopenjpeg_encoder_deps="libopenjpeg"
2375 libopus_decoder_deps="libopus"
2376 libopus_encoder_deps="libopus"
2377 libopus_encoder_select="audio_frame_queue"
2378 libquvi_demuxer_deps="libquvi"
2379 libschroedinger_decoder_deps="libschroedinger"
2380 libschroedinger_encoder_deps="libschroedinger"
2381 libshine_encoder_deps="libshine"
2382 libshine_encoder_select="audio_frame_queue"
2383 libspeex_decoder_deps="libspeex"
2384 libspeex_encoder_deps="libspeex"
2385 libspeex_encoder_select="audio_frame_queue"
2386 libstagefright_h264_decoder_deps="libstagefright_h264"
2387 libtheora_encoder_deps="libtheora"
2388 libtwolame_encoder_deps="libtwolame"
2389 libvo_aacenc_encoder_deps="libvo_aacenc"
2390 libvo_aacenc_encoder_select="audio_frame_queue"
2391 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2392 libvorbis_decoder_deps="libvorbis"
2393 libvorbis_encoder_deps="libvorbis"
2394 libvorbis_encoder_select="audio_frame_queue"
2395 libvpx_vp8_decoder_deps="libvpx"
2396 libvpx_vp8_encoder_deps="libvpx"
2397 libvpx_vp9_decoder_deps="libvpx"
2398 libvpx_vp9_encoder_deps="libvpx"
2399 libwavpack_encoder_deps="libwavpack"
2400 libwebp_encoder_deps="libwebp"
2401 libx264_encoder_deps="libx264"
2402 libx264rgb_encoder_deps="libx264"
2403 libx264rgb_encoder_select="libx264_encoder"
2404 libx265_encoder_deps="libx265"
2405 libxavs_encoder_deps="libxavs"
2406 libxvid_encoder_deps="libxvid"
2407 libutvideo_decoder_deps="libutvideo"
2408 libutvideo_encoder_deps="libutvideo"
2409 libzvbi_teletext_decoder_deps="libzvbi"
2410 nvenc_encoder_deps="nvenc"
2411
2412 # demuxers / muxers
2413 ac3_demuxer_select="ac3_parser"
2414 asf_demuxer_select="riffdec"
2415 asf_muxer_select="riffenc"
2416 asf_stream_muxer_select="asf_muxer"
2417 avi_demuxer_select="riffdec exif"
2418 avi_muxer_select="riffenc"
2419 avisynth_demuxer_deps="avisynth"
2420 avisynth_demuxer_select="riffdec"
2421 caf_demuxer_select="riffdec"
2422 dash_muxer_select="mp4_muxer"
2423 dirac_demuxer_select="dirac_parser"
2424 dts_demuxer_select="dca_parser"
2425 dtshd_demuxer_select="dca_parser"
2426 dv_demuxer_select="dvprofile"
2427 dv_muxer_select="dvprofile"
2428 dxa_demuxer_select="riffdec"
2429 eac3_demuxer_select="ac3_parser"
2430 f4v_muxer_select="mov_muxer"
2431 flac_demuxer_select="flac_parser"
2432 hds_muxer_select="flv_muxer"
2433 hls_muxer_select="mpegts_muxer"
2434 image2_alias_pix_demuxer_select="image2_demuxer"
2435 image2_brender_pix_demuxer_select="image2_demuxer"
2436 ipod_muxer_select="mov_muxer"
2437 ismv_muxer_select="mov_muxer"
2438 libnut_demuxer_deps="libnut"
2439 libnut_muxer_deps="libnut"
2440 matroska_audio_muxer_select="matroska_muxer"
2441 matroska_demuxer_select="riffdec"
2442 matroska_demuxer_suggest="bzlib lzo zlib"
2443 matroska_muxer_select="riffenc"
2444 mmf_muxer_select="riffenc"
2445 mov_demuxer_select="riffdec"
2446 mov_demuxer_suggest="zlib"
2447 mov_muxer_select="riffenc rtpenc_chain"
2448 mp3_demuxer_select="mpegaudio_parser"
2449 mp4_muxer_select="mov_muxer"
2450 mpegts_muxer_select="adts_muxer latm_muxer"
2451 mpegtsraw_demuxer_select="mpegts_demuxer"
2452 mxf_d10_muxer_select="mxf_muxer"
2453 mxf_opatom_muxer_select="mxf_muxer"
2454 nut_muxer_select="riffenc"
2455 nuv_demuxer_select="riffdec"
2456 oga_muxer_select="ogg_muxer"
2457 ogg_demuxer_select="golomb"
2458 opus_muxer_select="ogg_muxer"
2459 psp_muxer_select="mov_muxer"
2460 rtp_demuxer_select="sdp_demuxer"
2461 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2462 rtsp_demuxer_select="http_protocol rtpdec"
2463 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2464 sap_demuxer_select="sdp_demuxer"
2465 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2466 sdp_demuxer_select="rtpdec"
2467 smoothstreaming_muxer_select="ismv_muxer"
2468 spdif_muxer_select="aac_parser"
2469 spx_muxer_select="ogg_muxer"
2470 tak_demuxer_select="tak_parser"
2471 tg2_muxer_select="mov_muxer"
2472 tgp_muxer_select="mov_muxer"
2473 vobsub_demuxer_select="mpegps_demuxer"
2474 w64_demuxer_select="wav_demuxer"
2475 w64_muxer_select="wav_muxer"
2476 wav_demuxer_select="riffdec"
2477 wav_muxer_select="riffenc"
2478 webm_muxer_select="riffenc"
2479 wtv_demuxer_select="riffdec"
2480 wtv_muxer_select="riffenc"
2481 xmv_demuxer_select="riffdec"
2482 xwma_demuxer_select="riffdec"
2483
2484 # indevs / outdevs
2485 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2486 alsa_outdev_deps="alsa_asoundlib_h"
2487 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2488 avfoundation_indev_select="avfoundation"
2489 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2490 caca_outdev_deps="libcaca"
2491 decklink_outdev_deps="decklink pthreads"
2492 decklink_outdev_extralibs="-lstdc++"
2493 decklink_indev_deps="decklink pthreads"
2494 decklink_indev_extralibs="-lstdc++"
2495 dshow_indev_deps="IBaseFilter"
2496 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2497 dv1394_indev_deps="dv1394"
2498 dv1394_indev_select="dv_demuxer"
2499 fbdev_indev_deps="linux_fb_h"
2500 fbdev_outdev_deps="linux_fb_h"
2501 gdigrab_indev_deps="CreateDIBSection"
2502 gdigrab_indev_extralibs="-lgdi32"
2503 gdigrab_indev_select="bmp_decoder"
2504 iec61883_indev_deps="libiec61883"
2505 jack_indev_deps="jack_jack_h sem_timedwait"
2506 lavfi_indev_deps="avfilter"
2507 libcdio_indev_deps="libcdio"
2508 libdc1394_indev_deps="libdc1394"
2509 libv4l2_indev_deps="libv4l2"
2510 openal_indev_deps="openal"
2511 opengl_outdev_deps="opengl"
2512 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2513 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2514 pulse_indev_deps="libpulse"
2515 pulse_outdev_deps="libpulse"
2516 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2517 qtkit_indev_select="qtkit"
2518 sdl_outdev_deps="sdl"
2519 sndio_indev_deps="sndio_h"
2520 sndio_outdev_deps="sndio_h"
2521 v4l_indev_deps="linux_videodev_h"
2522 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2523 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2524 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2525 vfwcap_indev_extralibs="-lavicap32"
2526 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2527 xv_outdev_extralibs="-lXv -lX11 -lXext"
2528 x11grab_indev_deps="x11grab"
2529 x11grab_xcb_indev_deps="libxcb"
2530
2531 # protocols
2532 bluray_protocol_deps="libbluray"
2533 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2534 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2535 ffrtmpcrypt_protocol_select="tcp_protocol"
2536 ffrtmphttp_protocol_deps="!librtmp_protocol"
2537 ffrtmphttp_protocol_select="http_protocol"
2538 ftp_protocol_select="tcp_protocol"
2539 gopher_protocol_select="network"
2540 http_protocol_select="tcp_protocol"
2541 httpproxy_protocol_select="tcp_protocol"
2542 https_protocol_select="tls_protocol"
2543 icecast_protocol_select="http_protocol"
2544 librtmp_protocol_deps="librtmp"
2545 librtmpe_protocol_deps="librtmp"
2546 librtmps_protocol_deps="librtmp"
2547 librtmpt_protocol_deps="librtmp"
2548 librtmpte_protocol_deps="librtmp"
2549 libsmbclient_protocol_deps="libsmbclient gplv3"
2550 libssh_protocol_deps="libssh"
2551 mmsh_protocol_select="http_protocol"
2552 mmst_protocol_select="network"
2553 rtmp_protocol_deps="!librtmp_protocol"
2554 rtmp_protocol_select="tcp_protocol"
2555 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2556 rtmps_protocol_deps="!librtmp_protocol"
2557 rtmps_protocol_select="tls_protocol"
2558 rtmpt_protocol_select="ffrtmphttp_protocol"
2559 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2560 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2561 rtp_protocol_select="udp_protocol"
2562 sctp_protocol_deps="struct_sctp_event_subscribe"
2563 sctp_protocol_select="network"
2564 srtp_protocol_select="rtp_protocol"
2565 tcp_protocol_select="network"
2566 tls_protocol_deps_any="openssl gnutls"
2567 tls_protocol_select="tcp_protocol"
2568 udp_protocol_select="network"
2569 udplite_protocol_select="network"
2570 unix_protocol_deps="sys_un_h"
2571 unix_protocol_select="network"
2572
2573 # filters
2574 amovie_filter_deps="avcodec avformat"
2575 aresample_filter_deps="swresample"
2576 ass_filter_deps="libass"
2577 asyncts_filter_deps="avresample"
2578 atempo_filter_deps="avcodec"
2579 atempo_filter_select="rdft"
2580 azmq_filter_deps="libzmq"
2581 blackframe_filter_deps="gpl"
2582 boxblur_filter_deps="gpl"
2583 bs2b_filter_deps="libbs2b"
2584 colormatrix_filter_deps="gpl"
2585 cropdetect_filter_deps="gpl"
2586 delogo_filter_deps="gpl"
2587 deshake_filter_select="pixelutils"
2588 drawtext_filter_deps="libfreetype"
2589 ebur128_filter_deps="gpl"
2590 eq_filter_deps="gpl"
2591 flite_filter_deps="libflite"
2592 frei0r_filter_deps="frei0r dlopen"
2593 frei0r_src_filter_deps="frei0r dlopen"
2594 fspp_filter_deps="gpl"
2595 geq_filter_deps="gpl"
2596 histeq_filter_deps="gpl"
2597 hqdn3d_filter_deps="gpl"
2598 interlace_filter_deps="gpl"
2599 kerndeint_filter_deps="gpl"
2600 ladspa_filter_deps="ladspa dlopen"
2601 mcdeint_filter_deps="avcodec gpl"
2602 movie_filter_deps="avcodec avformat"
2603 mpdecimate_filter_deps="gpl"
2604 mpdecimate_filter_select="pixelutils"
2605 mptestsrc_filter_deps="gpl"
2606 negate_filter_deps="lut_filter"
2607 perspective_filter_deps="gpl"
2608 pp7_filter_deps="gpl"
2609 ocv_filter_deps="libopencv"
2610 owdenoise_filter_deps="gpl"
2611 pan_filter_deps="swresample"
2612 phase_filter_deps="gpl"
2613 pp_filter_deps="gpl postproc"
2614 pullup_filter_deps="gpl"
2615 removelogo_filter_deps="avcodec avformat swscale"
2616 resample_filter_deps="avresample"
2617 sab_filter_deps="gpl swscale"
2618 scale_filter_deps="swscale"
2619 select_filter_select="pixelutils"
2620 smartblur_filter_deps="gpl swscale"
2621 showspectrum_filter_deps="avcodec"
2622 showspectrum_filter_select="rdft"
2623 spp_filter_deps="gpl avcodec"
2624 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2625 stereo3d_filter_deps="gpl"
2626 subtitles_filter_deps="avformat avcodec libass"
2627 super2xsai_filter_deps="gpl"
2628 tinterlace_filter_deps="gpl"
2629 vidstabdetect_filter_deps="libvidstab"
2630 vidstabtransform_filter_deps="libvidstab"
2631 pixfmts_super2xsai_test_deps="super2xsai_filter"
2632 tinterlace_merge_test_deps="tinterlace_filter"
2633 tinterlace_pad_test_deps="tinterlace_filter"
2634 uspp_filter_deps="gpl avcodec"
2635 zmq_filter_deps="libzmq"
2636 zoompan_filter_deps="swscale"
2637
2638 # examples
2639 avio_reading="avformat avcodec avutil"
2640 avcodec_example_deps="avcodec avutil"
2641 decoding_encoding_example_deps="avcodec avformat avutil"
2642 demuxing_decoding_example_deps="avcodec avformat avutil"
2643 extract_mvs_example_deps="avcodec avformat avutil"
2644 filter_audio_example_deps="avfilter avutil"
2645 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2646 filtering_video_example_deps="avfilter avcodec avformat avutil"
2647 metadata_example_deps="avformat avutil"
2648 muxing_example_deps="avcodec avformat avutil swscale"
2649 remuxing_example_deps="avcodec avformat avutil"
2650 resampling_audio_example_deps="avutil swresample"
2651 scaling_video_example_deps="avutil swscale"
2652 transcode_aac_example_deps="avcodec avformat swresample"
2653 transcoding_example_deps="avfilter avcodec avformat avutil"
2654
2655 # libraries, in linking order
2656 avcodec_deps="avutil"
2657 avdevice_deps="avformat avcodec avutil"
2658 avfilter_deps="avutil"
2659 avformat_deps="avcodec avutil"
2660 avresample_deps="avutil"
2661 postproc_deps="avutil gpl"
2662 swresample_deps="avutil"
2663 swscale_deps="avutil"
2664
2665 # programs
2666 ffmpeg_deps="avcodec avfilter avformat swresample"
2667 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2668                null_filter
2669                setpts_filter trim_filter"
2670 ffplay_deps="avcodec avformat swscale swresample sdl"
2671 ffplay_libs='$sdl_libs'
2672 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2673 ffprobe_deps="avcodec avformat"
2674 ffserver_deps="avformat fork sarestart"
2675 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2676
2677 # documentation
2678 podpages_deps="perl"
2679 manpages_deps="perl pod2man"
2680 htmlpages_deps="perl"
2681 htmlpages_deps_any="makeinfo_html texi2html"
2682 txtpages_deps="perl makeinfo"
2683 doc_deps_any="manpages htmlpages podpages txtpages"
2684
2685 # default parameters
2686
2687 logfile="config.log"
2688
2689 # installation paths
2690 prefix_default="/usr/local"
2691 bindir_default='${prefix}/bin'
2692 datadir_default='${prefix}/share/ffmpeg'
2693 docdir_default='${prefix}/share/doc/ffmpeg'
2694 incdir_default='${prefix}/include'
2695 libdir_default='${prefix}/lib'
2696 mandir_default='${prefix}/share/man'
2697
2698 # toolchain
2699 ar_default="ar"
2700 cc_default="gcc"
2701 cxx_default="g++"
2702 host_cc_default="gcc"
2703 cp_f="cp -f"
2704 doxygen_default="doxygen"
2705 install="install"
2706 ln_s="ln -s -f"
2707 nm_default="nm -g"
2708 objformat="elf"
2709 pkg_config_default=pkg-config
2710 if ranlib 2>&1 | grep -q "\-D "; then
2711     ranlib_default="ranlib -D"
2712 else
2713     ranlib_default="ranlib"
2714 fi
2715 strip_default="strip"
2716 yasmexe_default="yasm"
2717 windres_default="windres"
2718
2719 # OS
2720 target_os_default=$(tolower $(uname -s))
2721 host_os=$target_os_default
2722
2723 # machine
2724 if test "$target_os_default" = aix; then
2725     arch_default=$(uname -p)
2726     strip_default="strip -X32_64"
2727 else
2728     arch_default=$(uname -m)
2729 fi
2730 cpu="generic"
2731 intrinsics="none"
2732
2733 # configurable options
2734 enable $PROGRAM_LIST
2735 enable $DOCUMENT_LIST
2736 enable $EXAMPLE_LIST
2737 enable $(filter_out avresample $LIBRARY_LIST)
2738 enable stripping
2739
2740 enable asm
2741 enable debug
2742 enable doc
2743 enable faan faandct faanidct
2744 enable optimizations
2745 enable runtime_cpudetect
2746 enable safe_bitstream_reader
2747 enable static
2748 enable swscale_alpha
2749
2750 sws_max_filter_size_default=256
2751 set_default sws_max_filter_size
2752
2753 # Enable hwaccels by default.
2754 enable dxva2 vaapi vda vdpau xvmc
2755 enable xlib
2756
2757 # build settings
2758 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2759 LIBPREF="lib"
2760 LIBSUF=".a"
2761 FULLNAME='$(NAME)$(BUILDSUF)'
2762 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2763 SLIBPREF="lib"
2764 SLIBSUF=".so"
2765 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2766 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2767 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2768 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2769 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2770 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2771
2772 asflags_filter=echo
2773 cflags_filter=echo
2774 ldflags_filter=echo
2775
2776 AS_C='-c'
2777 AS_O='-o $@'
2778 CC_C='-c'
2779 CC_E='-E -o $@'
2780 CC_O='-o $@'
2781 CXX_C='-c'
2782 CXX_O='-o $@'
2783 LD_O='-o $@'
2784 LD_LIB='-l%'
2785 LD_PATH='-L'
2786 HOSTCC_C='-c'
2787 HOSTCC_E='-E -o $@'
2788 HOSTCC_O='-o $@'
2789 HOSTLD_O='-o $@'
2790
2791 host_libs='-lm'
2792 host_cflags_filter=echo
2793 host_ldflags_filter=echo
2794
2795 target_path='$(CURDIR)'
2796
2797 # since the object filename is not given with the -MM flag, the compiler
2798 # is only able to print the basename, and we must add the path ourselves
2799 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2800 DEPFLAGS='-MM'
2801
2802 # find source path
2803 if test -f configure; then
2804     source_path=.
2805 else
2806     source_path=$(cd $(dirname "$0"); pwd)
2807     echo "$source_path" | grep -q '[[:blank:]]' &&
2808         die "Out of tree builds are impossible with whitespace in source path."
2809     test -e "$source_path/config.h" &&
2810         die "Out of tree builds are impossible with config.h in source dir."
2811 fi
2812
2813 for v in "$@"; do
2814     r=${v#*=}
2815     l=${v%"$r"}
2816     r=$(sh_quote "$r")
2817     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2818 done
2819
2820 find_things(){
2821     thing=$1
2822     pattern=$2
2823     file=$source_path/$3
2824     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2825 }
2826
2827 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2828 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2829 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2830 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2831 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2832 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2833 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2834 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2835 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2836 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2837 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2838
2839 ALL_COMPONENTS="
2840     $BSF_LIST
2841     $DECODER_LIST
2842     $DEMUXER_LIST
2843     $ENCODER_LIST
2844     $FILTER_LIST
2845     $HWACCEL_LIST
2846     $INDEV_LIST
2847     $MUXER_LIST
2848     $OUTDEV_LIST
2849     $PARSER_LIST
2850     $PROTOCOL_LIST
2851 "
2852
2853 for n in $COMPONENT_LIST; do
2854     v=$(toupper ${n%s})_LIST
2855     eval enable \$$v
2856     eval ${n}_if_any="\$$v"
2857 done
2858
2859 enable $ARCH_EXT_LIST
2860
2861 die_unknown(){
2862     echo "Unknown option \"$1\"."
2863     echo "See $0 --help for available options."
2864     exit 1
2865 }
2866
2867 print_3_columns() {
2868     cat | tr ' ' '\n' | sort | pr -r -3 -t
2869 }
2870
2871 show_list() {
2872     suffix=_$1
2873     shift
2874     echo $* | sed s/$suffix//g | print_3_columns
2875     exit 0
2876 }
2877
2878 rand_list(){
2879     IFS=', '
2880     set -- $*
2881     unset IFS
2882     for thing; do
2883         comp=${thing%:*}
2884         prob=${thing#$comp}
2885         prob=${prob#:}
2886         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2887         echo "prob ${prob:-0.5}"
2888         printf '%s\n' $comp
2889     done
2890 }
2891
2892 do_random(){
2893     action=$1
2894     shift
2895     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2896     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2897 }
2898
2899 for opt do
2900     optval="${opt#*=}"
2901     case "$opt" in
2902         --extra-ldflags=*)
2903             add_ldflags $optval
2904         ;;
2905         --extra-ldexeflags=*)
2906             add_ldexeflags $optval
2907         ;;
2908         --extra-libs=*)
2909             add_extralibs $optval
2910         ;;
2911         --disable-devices)
2912             disable $INDEV_LIST $OUTDEV_LIST
2913         ;;
2914         --enable-debug=*)
2915             debuglevel="$optval"
2916         ;;
2917         --disable-programs)
2918             disable $PROGRAM_LIST
2919         ;;
2920         --disable-everything)
2921             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2922         ;;
2923         --disable-all)
2924             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2925             disable $LIBRARY_LIST $PROGRAM_LIST doc
2926         ;;
2927         --enable-random|--disable-random)
2928             action=${opt%%-random}
2929             do_random ${action#--} $COMPONENT_LIST
2930         ;;
2931         --enable-random=*|--disable-random=*)
2932             action=${opt%%-random=*}
2933             do_random ${action#--} $optval
2934         ;;
2935         --enable-*=*|--disable-*=*)
2936             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2937             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2938             eval list=\$$(toupper $thing)_LIST
2939             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2940             list=$(filter "$name" $list)
2941             [ "$list" = "" ] && warn "Option $opt did not match anything"
2942             $action $list
2943         ;;
2944         --enable-?*|--disable-?*)
2945             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2946             if is_in $option $COMPONENT_LIST; then
2947                 test $action = disable && action=unset
2948                 eval $action \$$(toupper ${option%s})_LIST
2949             elif is_in $option $CMDLINE_SELECT; then
2950                 $action $option
2951             else
2952                 die_unknown $opt
2953             fi
2954         ;;
2955         --list-*)
2956             NAME="${opt#--list-}"
2957             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2958             NAME=${NAME%s}
2959             eval show_list $NAME \$$(toupper $NAME)_LIST
2960         ;;
2961         --help|-h) show_help
2962         ;;
2963         --fatal-warnings) enable fatal_warnings
2964         ;;
2965         *)
2966             optname="${opt%%=*}"
2967             optname="${optname#--}"
2968             optname=$(echo "$optname" | sed 's/-/_/g')
2969             if is_in $optname $CMDLINE_SET; then
2970                 eval $optname='$optval'
2971             elif is_in $optname $CMDLINE_APPEND; then
2972                 append $optname "$optval"
2973             else
2974                 die_unknown $opt
2975             fi
2976         ;;
2977     esac
2978 done
2979
2980 disabled logging && logfile=/dev/null
2981
2982 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2983 set >> $logfile
2984
2985 test -n "$cross_prefix" && enable cross_compile
2986
2987 if enabled cross_compile; then
2988     test -n "$arch" && test -n "$target_os" ||
2989         die "Must specify target arch and OS when cross-compiling"
2990 fi
2991
2992 ar_default="${cross_prefix}${ar_default}"
2993 cc_default="${cross_prefix}${cc_default}"
2994 cxx_default="${cross_prefix}${cxx_default}"
2995 nm_default="${cross_prefix}${nm_default}"
2996 pkg_config_default="${cross_prefix}${pkg_config_default}"
2997 ranlib_default="${cross_prefix}${ranlib_default}"
2998 strip_default="${cross_prefix}${strip_default}"
2999 windres_default="${cross_prefix}${windres_default}"
3000
3001 sysinclude_default="${sysroot}/usr/include"
3002
3003 test -n "$valgrind" && toolchain="valgrind-memcheck"
3004
3005 case "$toolchain" in
3006     clang-asan)
3007         cc_default="clang"
3008         add_cflags  -fsanitize=address
3009         add_ldflags -fsanitize=address
3010     ;;
3011     clang-tsan)
3012         cc_default="clang"
3013         add_cflags  -fsanitize=thread -pie
3014         add_ldflags -fsanitize=thread -pie
3015     ;;
3016     clang-usan)
3017         cc_default="clang"
3018         add_cflags  -fsanitize=undefined
3019         add_ldflags -fsanitize=undefined
3020     ;;
3021     gcc-asan)
3022         cc_default="gcc"
3023         add_cflags  -fsanitize=address
3024         add_ldflags -fsanitize=address
3025     ;;
3026     gcc-tsan)
3027         cc_default="gcc"
3028         add_cflags  -fsanitize=thread -pie -fPIC
3029         add_ldflags -fsanitize=thread -pie -fPIC
3030     ;;
3031     gcc-usan)
3032         cc_default="gcc"
3033         add_cflags  -fsanitize=undefined
3034         add_ldflags -fsanitize=undefined
3035     ;;
3036     valgrind-massif)
3037         target_exec_default=${valgrind:-"valgrind"}
3038         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"
3039     ;;
3040     valgrind-memcheck)
3041         target_exec_default=${valgrind:-"valgrind"}
3042         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3043     ;;
3044     msvc)
3045         # Check whether the current MSVC version needs the C99 converter.
3046         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3047         # support enough of C99 to build ffmpeg. Default to the new
3048         # behaviour if the regexp was unable to match anything, since this
3049         # successfully parses the version number of existing supported
3050         # versions that require the converter (MSVC 2010 and 2012).
3051         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3052         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3053             cc_default="cl"
3054         else
3055             cc_default="c99wrap cl"
3056         fi
3057         ld_default="link"
3058         nm_default="dumpbin -symbols"
3059         ar_default="lib"
3060         target_os_default="win32"
3061         # Use a relative path for TMPDIR. This makes sure all the
3062         # ffconf temp files are written with a relative path, avoiding
3063         # issues with msys/win32 path conversion for MSVC parameters
3064         # such as -Fo<file> or -out:<file>.
3065         TMPDIR=.
3066     ;;
3067     icl)
3068         cc_default="icl"
3069         ld_default="xilink"
3070         nm_default="dumpbin -symbols"
3071         ar_default="xilib"
3072         target_os_default="win32"
3073         TMPDIR=.
3074     ;;
3075     gcov)
3076         add_cflags  -fprofile-arcs -ftest-coverage
3077         add_ldflags -fprofile-arcs -ftest-coverage
3078     ;;
3079     hardened)
3080         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3081         add_cflags   -fno-strict-overflow -fstack-protector-all
3082         add_ldflags  -Wl,-z,relro -Wl,-z,now
3083     ;;
3084     ?*)
3085         die "Unknown toolchain $toolchain"
3086     ;;
3087 esac
3088
3089 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3090     target_exec target_os yasmexe
3091 enabled cross_compile || host_cc_default=$cc
3092 set_default host_cc
3093
3094 pkg_config_fail_message=""
3095 if ! $pkg_config --version >/dev/null 2>&1; then
3096     warn "$pkg_config not found, library detection may fail."
3097     pkg_config=false
3098 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3099     pkg_config_fail_message="
3100 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3101 fi
3102
3103 if test $doxygen != $doxygen_default && \
3104   ! $doxygen --version >/dev/null 2>&1; then
3105     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3106 fi
3107
3108 exesuf() {
3109     case $1 in
3110         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3111     esac
3112 }
3113
3114 EXESUF=$(exesuf $target_os)
3115 HOSTEXESUF=$(exesuf $host_os)
3116
3117 # set temporary file name
3118 : ${TMPDIR:=$TEMPDIR}
3119 : ${TMPDIR:=$TMP}
3120 : ${TMPDIR:=/tmp}
3121
3122 if [ -n "$tempprefix" ] ; then
3123     mktemp(){
3124         echo $tempprefix.${HOSTNAME}.${UID}
3125     }
3126 elif ! check_cmd mktemp -u XXXXXX; then
3127     # simple replacement for missing mktemp
3128     # NOT SAFE FOR GENERAL USE
3129     mktemp(){
3130         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3131     }
3132 fi
3133
3134 tmpfile(){
3135     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3136         (set -C; exec > $tmp) 2>/dev/null ||
3137         die "Unable to create temporary file in $TMPDIR."
3138     append TMPFILES $tmp
3139     eval $1=$tmp
3140 }
3141
3142 trap 'rm -f -- $TMPFILES' EXIT
3143
3144 tmpfile TMPASM .asm
3145 tmpfile TMPC   .c
3146 tmpfile TMPCPP .cpp
3147 tmpfile TMPE   $EXESUF
3148 tmpfile TMPH   .h
3149 tmpfile TMPM   .m
3150 tmpfile TMPO   .o
3151 tmpfile TMPS   .S
3152 tmpfile TMPSH  .sh
3153 tmpfile TMPV   .ver
3154
3155 unset -f mktemp
3156
3157 chmod +x $TMPE
3158
3159 # make sure we can execute files in $TMPDIR
3160 cat > $TMPSH 2>> $logfile <<EOF
3161 #! /bin/sh
3162 EOF
3163 chmod +x $TMPSH >> $logfile 2>&1
3164 if ! $TMPSH >> $logfile 2>&1; then
3165     cat <<EOF
3166 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3167 variable to another directory and make sure that it is not mounted noexec.
3168 EOF
3169     die "Sanity test failed."
3170 fi
3171
3172 armasm_flags(){
3173     for flag; do
3174         case $flag in
3175             # Filter out MSVC cl.exe options from cflags that shouldn't
3176             # be passed to gas-preprocessor
3177             -M[TD]*)                                            ;;
3178             *)                  echo $flag                      ;;
3179         esac
3180    done
3181 }
3182
3183 ccc_flags(){
3184     for flag; do
3185         case $flag in
3186             -std=c99)           echo -c99                       ;;
3187             -mcpu=*)            echo -arch ${flag#*=}           ;;
3188             -mieee)             echo -ieee                      ;;
3189             -O*|-fast)          echo $flag                      ;;
3190             -fno-math-errno)    echo -assume nomath_errno       ;;
3191             -g)                 echo -g3                        ;;
3192             -Wall)              echo -msg_enable level2         ;;
3193             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3194             -Wl,*)              echo $flag                      ;;
3195             -f*|-W*)                                            ;;
3196             *)                  echo $flag                      ;;
3197         esac
3198    done
3199 }
3200
3201 cparser_flags(){
3202     for flag; do
3203         case $flag in
3204             -Wno-switch)             echo -Wno-switch-enum ;;
3205             -Wno-format-zero-length) ;;
3206             -Wdisabled-optimization) ;;
3207             -Wno-pointer-sign)       echo -Wno-other ;;
3208             *)                       echo $flag ;;
3209         esac
3210     done
3211 }
3212
3213 msvc_common_flags(){
3214     for flag; do
3215         case $flag in
3216             # In addition to specifying certain flags under the compiler
3217             # specific filters, they must be specified here as well or else the
3218             # generic catch all at the bottom will print the original flag.
3219             -Wall)                ;;
3220             -std=c99)             ;;
3221             # Common flags
3222             -fomit-frame-pointer) ;;
3223             -g)                   echo -Z7 ;;
3224             -fno-math-errno)      ;;
3225             -fno-common)          ;;
3226             -fno-signed-zeros)    ;;
3227             -fPIC)                ;;
3228             -mthumb)              ;;
3229             -march=*)             ;;
3230             -lz)                  echo zlib.lib ;;
3231             -lavifil32)           echo vfw32.lib ;;
3232             -lavicap32)           echo vfw32.lib user32.lib ;;
3233             -l*)                  echo ${flag#-l}.lib ;;
3234             -L*)                  echo -libpath:${flag#-L} ;;
3235             *)                    echo $flag ;;
3236         esac
3237     done
3238 }
3239
3240 msvc_flags(){
3241     msvc_common_flags "$@"
3242     for flag; do
3243         case $flag in
3244             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3245                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3246                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3247                                        -wd4554 \
3248                                        -wd4273 -wd4701 ;;
3249         esac
3250     done
3251 }
3252
3253 icl_flags(){
3254     msvc_common_flags "$@"
3255     for flag; do
3256         case $flag in
3257             # Despite what Intel's documentation says -Wall, which is supported
3258             # on Windows, does enable remarks so disable them here.
3259             -Wall)                echo $flag -Qdiag-disable:remark ;;
3260             -std=c99)             echo -Qstd=c99 ;;
3261             -flto)                echo -ipo ;;
3262         esac
3263     done
3264 }
3265
3266 icc_flags(){
3267     for flag; do
3268         case $flag in
3269             -flto)                echo -ipo ;;
3270             *)                    echo $flag ;;
3271         esac
3272     done
3273 }
3274
3275 pgi_flags(){
3276     for flag; do
3277         case $flag in
3278             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3279             -fomit-frame-pointer) echo -Mnoframe ;;
3280             -g)                   echo -gopt ;;
3281             *)                    echo $flag ;;
3282         esac
3283     done
3284 }
3285
3286 suncc_flags(){
3287     for flag; do
3288         case $flag in
3289             -march=*|-mcpu=*)
3290                 case "${flag#*=}" in
3291                     native)                   echo -xtarget=native       ;;
3292                     v9|niagara)               echo -xarch=sparc          ;;
3293                     ultrasparc)               echo -xarch=sparcvis       ;;
3294                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3295                     i586|pentium)             echo -xchip=pentium        ;;
3296                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3297                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3298                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3299                     pentium4*)          echo -xtarget=pentium4           ;;
3300                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3301                     *-sse3)             echo -xarch=sse3                 ;;
3302                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3303                     bonnell)                   echo -xarch=ssse3         ;;
3304                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3305                     westmere)                  echo -xtarget=westmere    ;;
3306                     silvermont)                echo -xarch=sse4_2        ;;
3307                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3308                     core-avx*|ivybridge|haswell|broadwell)
3309                                                echo -xarch=avx           ;;
3310                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3311                     btver1)                    echo -xarch=amdsse4a      ;;
3312                     btver2|bdver*)             echo -xarch=avx           ;;
3313                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3314                     k8|opteron|athlon64|athlon-fx)
3315                                                echo -xarch=sse2a         ;;
3316                     athlon*)                   echo -xarch=pentium_proa  ;;
3317                 esac
3318                 ;;
3319             -std=c99)             echo -xc99              ;;
3320             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3321             -fPIC)                echo -KPIC -xcode=pic32 ;;
3322             -W*,*)                echo $flag              ;;
3323             -f*-*|-W*|-mimpure-text)                      ;;
3324             -shared)              echo -G                 ;;
3325             *)                    echo $flag              ;;
3326         esac
3327     done
3328 }
3329
3330 tms470_flags(){
3331     for flag; do
3332         case $flag in
3333             -march=*|-mcpu=*)
3334                 case "${flag#*=}" in
3335                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3336                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3337                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3338                     armv6*|arm11*)          echo -mv=6   ;;
3339                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3340                                             echo -mv=5e  ;;
3341                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3342                 esac
3343                 ;;
3344             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3345             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3346             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3347             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3348             -msoft-float)   echo --float_support=vfplib       ;;
3349             -O[0-3]|-mf=*)  echo $flag                        ;;
3350             -g)             echo -g -mn                       ;;
3351             -pds=*)         echo $flag                        ;;
3352             -D*|-I*)        echo $flag                        ;;
3353             --gcc|--abi=*)  echo $flag                        ;;
3354             -me)            echo $flag                        ;;
3355         esac
3356     done
3357 }
3358
3359 probe_cc(){
3360     pfx=$1
3361     _cc=$2
3362
3363     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3364     unset _ld_o _ldflags _ld_lib _ld_path
3365     unset _depflags _DEPCMD _DEPFLAGS
3366     _flags_filter=echo
3367
3368     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3369         true # no-op to avoid reading stdin in following checks
3370     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3371         _type=llvm_gcc
3372         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3373         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3374         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3375         _cflags_speed='-O3'
3376         _cflags_size='-Os'
3377     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3378         _type=gcc
3379         gcc_version=$($_cc --version | head -n1)
3380         gcc_basever=$($_cc -dumpversion)
3381         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3382         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3383         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3384         if ! $_cc -dumpversion | grep -q '^2\.'; then
3385             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3386         fi
3387         _cflags_speed='-O3'
3388         _cflags_size='-Os'
3389     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3390         _type=icc
3391         _ident=$($_cc --version | head -n1)
3392         _depflags='-MMD'
3393         _cflags_speed='-O3'
3394         _cflags_size='-Os'
3395         _cflags_noopt='-O1'
3396         _flags_filter=icc_flags
3397     elif $_cc -v 2>&1 | grep -q xlc; then
3398         _type=xlc
3399         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3400         _cflags_speed='-O5'
3401         _cflags_size='-O5 -qcompact'
3402     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3403         _type=ccc
3404         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3405         _DEPFLAGS='-M'
3406         _cflags_speed='-fast'
3407         _cflags_size='-O1'
3408         _flags_filter=ccc_flags
3409     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3410         test -d "$sysroot" || die "No valid sysroot specified."
3411         _type=armcc
3412         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3413         armcc_conf="$PWD/armcc.conf"
3414         $_cc --arm_linux_configure                 \
3415              --arm_linux_config_file="$armcc_conf" \
3416              --configure_sysroot="$sysroot"        \
3417              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3418              die "Error creating armcc configuration file."
3419         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3420         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3421         as_default="${cross_prefix}gcc"
3422         _depflags='-MMD'
3423         _cflags_speed='-O3'
3424         _cflags_size='-Os'
3425     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3426         _type=tms470
3427         _ident=$($_cc -version | head -n1 | tr -s ' ')
3428         _flags='--gcc --abi=eabi -me'
3429         _cc_e='-ppl -fe=$@'
3430         _cc_o='-fe=$@'
3431         _depflags='-ppa -ppd=$(@:.o=.d)'
3432         _cflags_speed='-O3 -mf=5'
3433         _cflags_size='-O3 -mf=2'
3434         _flags_filter=tms470_flags
3435     elif $_cc -v 2>&1 | grep -q clang; then
3436         _type=clang
3437         _ident=$($_cc --version | head -n1)
3438         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3439         _cflags_speed='-O3'
3440         _cflags_size='-Os'
3441     elif $_cc -V 2>&1 | grep -q Sun; then
3442         _type=suncc
3443         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3444         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3445         _DEPFLAGS='-xM1 -xc99'
3446         _ldflags='-std=c99'
3447         _cflags_speed='-O5'
3448         _cflags_size='-O5 -xspace'
3449         _flags_filter=suncc_flags
3450     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3451         _type=pathscale
3452         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3453         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3454         _cflags_speed='-O2'
3455         _cflags_size='-Os'
3456         _flags_filter='filter_out -Wdisabled-optimization'
3457     elif $_cc -v 2>&1 | grep -q Open64; then
3458         _type=open64
3459         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3460         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3461         _cflags_speed='-O2'
3462         _cflags_size='-Os'
3463         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3464     elif $_cc -V 2>&1 | grep -q Portland; then
3465         _type=pgi
3466         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3467         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3468         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3469         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3470         _cflags_noopt="-O"
3471         _flags_filter=pgi_flags
3472     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3473         _type=armasm
3474         _ident=$($_cc | head -n1)
3475         # 4509: "This form of conditional instruction is deprecated"
3476         _flags="-nologo -ignore 4509"
3477         _flags_filter=armasm_flags
3478     elif $_cc 2>&1 | grep -q Intel; then
3479         _type=icl
3480         _ident=$($cc 2>&1 | head -n1)
3481         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3482         # Not only is O3 broken on 13.x+ but it is slower on all previous
3483         # versions (tested) as well.
3484         _cflags_speed="-O2"
3485         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3486         if $_cc 2>&1 | grep -q Linker; then
3487             _ld_o='-out:$@'
3488         else
3489             _ld_o='-Fe$@'
3490         fi
3491         _cc_o='-Fo$@'
3492         _cc_e='-P'
3493         _flags_filter=icl_flags
3494         _ld_lib='lib%.a'
3495         _ld_path='-libpath:'
3496         # -Qdiag-error to make icl error when seeing certain unknown arguments
3497         _flags='-nologo -Qdiag-error:4044,10157'
3498         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3499         # with MSVC which enables it by default.
3500         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3501         if [ $pfx = hostcc ]; then
3502             append _cflags -Dsnprintf=_snprintf
3503         fi
3504         disable stripping
3505     elif $_cc 2>&1 | grep -q Microsoft; then
3506         _type=msvc
3507         _ident=$($cc 2>&1 | head -n1)
3508         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3509         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3510         _cflags_speed="-O2"
3511         _cflags_size="-O1"
3512         if $_cc 2>&1 | grep -q Linker; then
3513             _ld_o='-out:$@'
3514         else
3515             _ld_o='-Fe$@'
3516         fi
3517         _cc_o='-Fo$@'
3518         _cc_e='-P -Fi$@'
3519         _flags_filter=msvc_flags
3520         _ld_lib='lib%.a'
3521         _ld_path='-libpath:'
3522         _flags='-nologo'
3523         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3524         if [ $pfx = hostcc ]; then
3525             append _cflags -Dsnprintf=_snprintf
3526         fi
3527         disable stripping
3528     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3529         _type=cparser
3530         _ident=$($_cc --version | head -n1)
3531         _depflags='-MMD'
3532         _cflags_speed='-O4'
3533         _cflags_size='-O2'
3534         _flags_filter=cparser_flags
3535     fi
3536
3537     eval ${pfx}_type=\$_type
3538     eval ${pfx}_ident=\$_ident
3539 }
3540
3541 set_ccvars(){
3542     eval ${1}_C=\${_cc_c-\${${1}_C}}
3543     eval ${1}_E=\${_cc_e-\${${1}_E}}
3544     eval ${1}_O=\${_cc_o-\${${1}_O}}
3545
3546     if [ -n "$_depflags" ]; then
3547         eval ${1}_DEPFLAGS=\$_depflags
3548     else
3549         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3550         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3551         eval DEP${1}FLAGS=\$_flags
3552     fi
3553 }
3554
3555 probe_cc cc "$cc"
3556 cflags_filter=$_flags_filter
3557 cflags_speed=$_cflags_speed
3558 cflags_size=$_cflags_size
3559 cflags_noopt=$_cflags_noopt
3560 add_cflags $_flags $_cflags
3561 cc_ldflags=$_ldflags
3562 set_ccvars CC
3563
3564 probe_cc hostcc "$host_cc"
3565 host_cflags_filter=$_flags_filter
3566 add_host_cflags  $_flags $_cflags
3567 set_ccvars HOSTCC
3568
3569 test -n "$cc_type" && enable $cc_type ||
3570     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3571
3572 : ${as_default:=$cc}
3573 : ${dep_cc_default:=$cc}
3574 : ${ld_default:=$cc}
3575 : ${host_ld_default:=$host_cc}
3576 set_default ar as dep_cc ld host_ld windres
3577
3578 probe_cc as "$as"
3579 asflags_filter=$_flags_filter
3580 add_asflags $_flags $_cflags
3581 set_ccvars AS
3582
3583 probe_cc ld "$ld"
3584 ldflags_filter=$_flags_filter
3585 add_ldflags $_flags $_ldflags
3586 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3587 LD_O=${_ld_o-$LD_O}
3588 LD_LIB=${_ld_lib-$LD_LIB}
3589 LD_PATH=${_ld_path-$LD_PATH}
3590
3591 probe_cc hostld "$host_ld"
3592 host_ldflags_filter=$_flags_filter
3593 add_host_ldflags $_flags $_ldflags
3594 HOSTLD_O=${_ld_o-$HOSTLD_O}
3595
3596 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3597     probe_cc depcc "$dep_cc"
3598     CCDEP=${_DEPCMD:-$DEPCMD}
3599     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3600     DEPCCFLAGS=$_flags
3601 fi
3602
3603 if $ar 2>&1 | grep -q Microsoft; then
3604     arflags="-nologo"
3605     ar_o='-out:$@'
3606 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3607     arflags="rq"
3608     ar_o='$@'
3609 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3610     arflags='-Xany -r -c'
3611     ar_o='$@'
3612 elif $ar 2>&1 | grep -q "\[D\] "; then
3613     arflags="rcD"
3614     ar_o='$@'
3615 else
3616     arflags="rc"
3617     ar_o='$@'
3618 fi
3619
3620 add_cflags $extra_cflags
3621 add_cxxflags $extra_cxxflags
3622 add_asflags $extra_cflags
3623
3624 if test -n "$sysroot"; then
3625     case "$cc_type" in
3626         gcc|llvm_gcc|clang)
3627             add_cppflags --sysroot="$sysroot"
3628             add_ldflags --sysroot="$sysroot"
3629 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3630             add_cppflags -isysroot "$sysroot"
3631             add_ldflags -isysroot "$sysroot"
3632         ;;
3633         tms470)
3634             add_cppflags -I"$sysinclude"
3635             add_ldflags  --sysroot="$sysroot"
3636         ;;
3637     esac
3638 fi
3639
3640 if test "$cpu" = host; then
3641     enabled cross_compile &&
3642         die "--cpu=host makes no sense when cross-compiling."
3643
3644     case "$cc_type" in
3645         gcc|llvm_gcc)
3646             check_native(){
3647                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3648                 sed -n "/cc1.*$1=/{
3649                             s/.*$1=\\([^ ]*\\).*/\\1/
3650                             p
3651                             q
3652                         }" $TMPE
3653             }
3654             cpu=$(check_native -march || check_native -mcpu)
3655         ;;
3656     esac
3657
3658     test "${cpu:-host}" = host &&
3659         die "--cpu=host not supported with compiler $cc"
3660 fi
3661
3662 # Deal with common $arch aliases
3663 case "$arch" in
3664     aarch64|arm64)
3665         arch="aarch64"
3666     ;;
3667     arm*|iPad*|iPhone*)
3668         arch="arm"
3669     ;;
3670     mips*|IP*)
3671         arch="mips"
3672     ;;
3673     parisc*|hppa*)
3674         arch="parisc"
3675     ;;
3676     "Power Macintosh"|ppc*|powerpc*)
3677         arch="ppc"
3678     ;;
3679     s390|s390x)
3680         arch="s390"
3681     ;;
3682     sh4|sh)
3683         arch="sh4"
3684     ;;
3685     sun4u|sparc*)
3686         arch="sparc"
3687     ;;
3688     tilegx|tile-gx)
3689         arch="tilegx"
3690     ;;
3691     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3692         arch="x86"
3693     ;;
3694 esac
3695
3696 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3697 enable $arch
3698
3699 # Add processor-specific flags
3700 if enabled aarch64; then
3701
3702     case $cpu in
3703         armv*)
3704             cpuflags="-march=$cpu"
3705         ;;
3706         *)
3707             cpuflags="-mcpu=$cpu"
3708         ;;
3709     esac
3710
3711 elif enabled alpha; then
3712
3713     cpuflags="-mcpu=$cpu"
3714
3715 elif enabled arm; then
3716
3717     check_arm_arch() {
3718         check_cpp_condition stddef.h \
3719             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3720             $cpuflags
3721     }
3722
3723     probe_arm_arch() {
3724         if   check_arm_arch 4;        then echo armv4;
3725         elif check_arm_arch 4T;       then echo armv4t;
3726         elif check_arm_arch 5;        then echo armv5;
3727         elif check_arm_arch 5E;       then echo armv5e;
3728         elif check_arm_arch 5T;       then echo armv5t;
3729         elif check_arm_arch 5TE;      then echo armv5te;
3730         elif check_arm_arch 5TEJ;     then echo armv5te;
3731         elif check_arm_arch 6;        then echo armv6;
3732         elif check_arm_arch 6J;       then echo armv6j;
3733         elif check_arm_arch 6K;       then echo armv6k;
3734         elif check_arm_arch 6Z;       then echo armv6z;
3735         elif check_arm_arch 6ZK;      then echo armv6zk;
3736         elif check_arm_arch 6T2;      then echo armv6t2;
3737         elif check_arm_arch 7;        then echo armv7;
3738         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3739         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3740         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3741         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3742         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3743         fi
3744     }
3745
3746     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3747
3748     case $cpu in
3749         armv*)
3750             cpuflags="-march=$cpu"
3751             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3752         ;;
3753         *)
3754             cpuflags="-mcpu=$cpu"
3755             case $cpu in
3756                 cortex-a*)                               subarch=armv7a  ;;
3757                 cortex-r*)                               subarch=armv7r  ;;
3758                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3759                 arm11*)                                  subarch=armv6   ;;
3760                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3761                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3762                 *)                             subarch=$(probe_arm_arch) ;;
3763             esac
3764         ;;
3765     esac
3766
3767     case "$subarch" in
3768         armv5t*)    enable fast_clz                ;;
3769         armv[6-8]*)
3770             enable fast_clz
3771             disabled fast_unaligned || enable fast_unaligned
3772             ;;
3773     esac
3774
3775 elif enabled avr32; then
3776
3777     case $cpu in
3778         ap7[02]0[0-2])
3779             subarch="avr32_ap"
3780             cpuflags="-mpart=$cpu"
3781         ;;
3782         ap)
3783             subarch="avr32_ap"
3784             cpuflags="-march=$cpu"
3785         ;;
3786         uc3[ab]*)
3787             subarch="avr32_uc"
3788             cpuflags="-mcpu=$cpu"
3789         ;;
3790         uc)
3791             subarch="avr32_uc"
3792             cpuflags="-march=$cpu"
3793         ;;
3794     esac
3795
3796 elif enabled bfin; then
3797
3798     cpuflags="-mcpu=$cpu"
3799
3800 elif enabled mips; then
3801
3802     cpuflags="-march=$cpu"
3803
3804     case $cpu in
3805         24kc)
3806             disable mipsfpu
3807             disable mipsdspr1
3808             disable mipsdspr2
3809         ;;
3810         24kf*)
3811             disable mipsdspr1
3812             disable mipsdspr2
3813         ;;
3814         24kec|34kc|1004kc)
3815             disable mipsfpu
3816             disable mipsdspr2
3817         ;;
3818         24kef*|34kf*|1004kf*)
3819             disable mipsdspr2
3820         ;;
3821         74kc)
3822             disable mipsfpu
3823         ;;
3824     esac
3825
3826 elif enabled ppc; then
3827
3828     disable ldbrx
3829     disable vsx
3830
3831     case $(tolower $cpu) in
3832         601|ppc601|powerpc601)
3833             cpuflags="-mcpu=601"
3834             disable altivec
3835         ;;
3836         603*|ppc603*|powerpc603*)
3837             cpuflags="-mcpu=603"
3838             disable altivec
3839         ;;
3840         604*|ppc604*|powerpc604*)
3841             cpuflags="-mcpu=604"
3842             disable altivec
3843         ;;
3844         g3|75*|ppc75*|powerpc75*)
3845             cpuflags="-mcpu=750"
3846             disable altivec
3847         ;;
3848         g4|745*|ppc745*|powerpc745*)
3849             cpuflags="-mcpu=7450"
3850         ;;
3851         74*|ppc74*|powerpc74*)
3852             cpuflags="-mcpu=7400"
3853         ;;
3854         g5|970|ppc970|powerpc970)
3855             cpuflags="-mcpu=970"
3856         ;;
3857         power[3-8]*)
3858             cpuflags="-mcpu=$cpu"
3859         ;;
3860         cell)
3861             cpuflags="-mcpu=cell"
3862             enable ldbrx
3863         ;;
3864         e500mc)
3865             cpuflags="-mcpu=e500mc"
3866             disable altivec
3867         ;;
3868         e500v2)
3869             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3870             disable altivec
3871             disable dcbzl
3872         ;;
3873         e500)
3874             cpuflags="-mcpu=8540 -mhard-float"
3875             disable altivec
3876             disable dcbzl
3877         ;;
3878     esac
3879
3880 elif enabled sparc; then
3881
3882     case $cpu in
3883         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3884             cpuflags="-mcpu=$cpu"
3885         ;;
3886         ultrasparc*|niagara[234])
3887             cpuflags="-mcpu=$cpu"
3888         ;;
3889     esac
3890
3891 elif enabled x86; then
3892
3893     case $cpu in
3894         i[345]86|pentium)
3895             cpuflags="-march=$cpu"
3896             disable i686
3897             disable mmx
3898         ;;
3899         # targets that do NOT support nopl and conditional mov (cmov)
3900         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3901             cpuflags="-march=$cpu"
3902             disable i686
3903         ;;
3904         # targets that do support nopl and conditional mov (cmov)
3905         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3906         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3907             cpuflags="-march=$cpu"
3908             enable i686
3909             enable fast_cmov
3910         ;;
3911         # targets that do support conditional mov but on which it's slow
3912         pentium4|pentium4m|prescott|nocona)
3913             cpuflags="-march=$cpu"
3914             enable i686
3915             disable fast_cmov
3916         ;;
3917     esac
3918
3919 fi
3920
3921 if [ "$cpu" != generic ]; then
3922     add_cflags  $cpuflags
3923     add_asflags $cpuflags
3924 fi
3925
3926 # compiler sanity check
3927 check_exec <<EOF
3928 int main(void){ return 0; }
3929 EOF
3930 if test "$?" != 0; then
3931     echo "$cc is unable to create an executable file."
3932     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3933         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3934         echo "Only do this if you know what cross compiling means."
3935     fi
3936     die "C compiler test failed."
3937 fi
3938
3939 add_cppflags -D_ISOC99_SOURCE
3940 add_cxxflags -D__STDC_CONSTANT_MACROS
3941 check_cflags -std=c99
3942 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3943 #include <stdlib.h>
3944 EOF
3945 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3946 #include <stdlib.h>
3947 EOF
3948
3949 add_host_cppflags -D_ISOC99_SOURCE
3950 check_host_cflags -std=c99
3951 check_host_cflags -Wall
3952 check_host_cflags -O3
3953
3954 check_64bit(){
3955     arch32=$1
3956     arch64=$2
3957     expr=$3
3958     check_code cc "" "int test[2*($expr) - 1]" &&
3959         subarch=$arch64 || subarch=$arch32
3960 }
3961
3962 case "$arch" in
3963     aarch64|alpha|ia64)
3964         spic=$shared
3965     ;;
3966     mips)
3967         check_64bit mips mips64 '_MIPS_SIM > 1'
3968         spic=$shared
3969     ;;
3970     parisc)
3971         check_64bit parisc parisc64 'sizeof(void *) > 4'
3972         spic=$shared
3973     ;;
3974     ppc)
3975         check_64bit ppc ppc64 'sizeof(void *) > 4'
3976         spic=$shared
3977     ;;
3978     s390)
3979         check_64bit s390 s390x 'sizeof(void *) > 4'
3980         spic=$shared
3981     ;;
3982     sparc)
3983         check_64bit sparc sparc64 'sizeof(void *) > 4'
3984         spic=$shared
3985     ;;
3986     x86)
3987         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3988         # Treat x32 as x64 for now. Note it also needs spic=$shared
3989         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3990             subarch=x86_64
3991         if test "$subarch" = "x86_64"; then
3992             spic=$shared
3993         fi
3994     ;;
3995     ppc)
3996         check_cc <<EOF && subarch="ppc64"
3997         int test[(int)sizeof(char*) - 7];
3998 EOF
3999     ;;
4000 esac
4001
4002 enable $subarch
4003 enabled spic && enable_weak pic
4004
4005 # OS specific
4006 case $target_os in
4007     aix)
4008         SHFLAGS=-shared
4009         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4010         enabled shared && add_ldflags -Wl,-brtl
4011         ;;
4012     android)
4013         disable symver
4014         enable section_data_rel_ro
4015         SLIB_INSTALL_NAME='$(SLIBNAME)'
4016         SLIB_INSTALL_LINKS=
4017         # soname not set on purpose
4018         SHFLAGS=-shared
4019         ;;
4020     haiku)
4021         prefix_default="/boot/common"
4022         network_extralibs="-lnetwork"
4023         host_libs=
4024         ;;
4025     sunos)
4026         SHFLAGS='-shared -Wl,-h,$$(@F)'
4027         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4028         network_extralibs="-lsocket -lnsl"
4029         # When using suncc to build, the Solaris linker will mark
4030         # an executable with each instruction set encountered by
4031         # the Solaris assembler.  As our libraries contain their own
4032         # guards for processor-specific code, instead suppress
4033         # generation of the HWCAPS ELF section on Solaris x86 only.
4034         enabled_all suncc x86 &&
4035             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4036             add_ldflags -Wl,-M,mapfile
4037         nm_default='nm -P -g'
4038         ;;
4039     netbsd)
4040         disable symver
4041         oss_indev_extralibs="-lossaudio"
4042         oss_outdev_extralibs="-lossaudio"
4043         enabled gcc || check_ldflags -Wl,-zmuldefs
4044         ;;
4045     openbsd|bitrig)
4046         disable symver
4047         SHFLAGS='-shared'
4048         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4049         SLIB_INSTALL_LINKS=
4050         oss_indev_extralibs="-lossaudio"
4051         oss_outdev_extralibs="-lossaudio"
4052         ;;
4053     dragonfly)
4054         disable symver
4055         ;;
4056     freebsd)
4057         ;;
4058     bsd/os)
4059         add_extralibs -lpoll -lgnugetopt
4060         strip="strip -d"
4061         ;;
4062     darwin)
4063         enabled ppc && add_asflags -force_cpusubtype_ALL
4064         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4065         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4066         strip="${strip} -x"
4067         add_ldflags -Wl,-dynamic,-search_paths_first
4068         SLIBSUF=".dylib"
4069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4071         objformat="macho"
4072         enabled x86_64 && objformat="macho64"
4073         enabled_any pic shared x86_64 ||
4074             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4075         ;;
4076     mingw32*)
4077         if test $target_os = "mingw32ce"; then
4078             disable network
4079         else
4080             target_os=mingw32
4081         fi
4082         LIBTARGET=i386
4083         if enabled x86_64; then
4084             LIBTARGET="i386:x86-64"
4085         elif enabled arm; then
4086             LIBTARGET=arm-wince
4087         fi
4088         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4089         check_ldflags -Wl,--nxcompat
4090         check_ldflags -Wl,--dynamicbase
4091         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4092         shlibdir_default="$bindir_default"
4093         SLIBPREF=""
4094         SLIBSUF=".dll"
4095         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4096         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4097         dlltool="${cross_prefix}dlltool"
4098         if check_cmd lib.exe -list; then
4099             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4100             if enabled x86_64; then
4101                 LIBTARGET=x64
4102             fi
4103         elif check_cmd $dlltool --version; then
4104             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4105         fi
4106         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4107         SLIB_INSTALL_LINKS=
4108         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4109         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4110         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4111         objformat="win32"
4112         ranlib=:
4113         enable dos_paths
4114         ;;
4115     win32|win64)
4116         disable symver
4117         if enabled shared; then
4118             # Link to the import library instead of the normal static library
4119             # for shared libs.
4120             LD_LIB='%.lib'
4121             # Cannot build both shared and static libs with MSVC or icl.
4122             disable static
4123         fi
4124         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4125         shlibdir_default="$bindir_default"
4126         SLIBPREF=""
4127         SLIBSUF=".dll"
4128         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4129         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4130         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4131         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4132         SLIB_INSTALL_LINKS=
4133         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4134         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4135         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4136         objformat="win32"
4137         ranlib=:
4138         enable dos_paths
4139         ;;
4140     cygwin*)
4141         target_os=cygwin
4142         shlibdir_default="$bindir_default"
4143         SLIBPREF="cyg"
4144         SLIBSUF=".dll"
4145         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4146         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4147         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4148         SLIB_INSTALL_LINKS=
4149         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4150         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4151         objformat="win32"
4152         enable dos_paths
4153         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4154         ;;
4155     *-dos|freedos|opendos)
4156         network_extralibs="-lsocket"
4157         objformat="coff"
4158         enable dos_paths
4159         add_cppflags -U__STRICT_ANSI__
4160         ;;
4161     linux)
4162         enable dv1394
4163         enable section_data_rel_ro
4164         ;;
4165     irix*)
4166         target_os=irix
4167         ranlib="echo ignoring ranlib"
4168         ;;
4169     os/2*)
4170         strip="lxlite -CS"
4171         ln_s="cp -f"
4172         objformat="aout"
4173         add_cppflags -D_GNU_SOURCE
4174         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4175         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4176         LIBSUF="_s.a"
4177         SLIBPREF=""
4178         SLIBSUF=".dll"
4179         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4180         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4181         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4182             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4183             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4184             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4185             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4186             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4187         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4188             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4189         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4190         enable dos_paths
4191         enable_weak os2threads
4192         ;;
4193     gnu/kfreebsd)
4194         add_cppflags -D_BSD_SOURCE
4195         ;;
4196     gnu)
4197         ;;
4198     qnx)
4199         add_cppflags -D_QNX_SOURCE
4200         network_extralibs="-lsocket"
4201         ;;
4202     symbian)
4203         SLIBSUF=".dll"
4204         enable dos_paths
4205         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4206         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4207         add_ldflags -Wl,--target1-abs,--no-undefined \
4208                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4209                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4210         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4211                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4212                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4213         ;;
4214     osf1)
4215         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4216         ;;
4217     minix)
4218         ;;
4219     plan9)
4220         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4221                      -D_REENTRANT_SOURCE        \
4222                      -D_RESEARCH_SOURCE         \
4223                      -DFD_SETSIZE=96            \
4224                      -DHAVE_SOCK_OPTS
4225         add_compat strtod.o strtod=avpriv_strtod
4226         network_extralibs='-lbsd'
4227         exeobjs=compat/plan9/main.o
4228         disable ffserver
4229         cp_f='cp'
4230         ;;
4231     none)
4232         ;;
4233     *)
4234         die "Unknown OS '$target_os'."
4235         ;;
4236 esac
4237
4238 # determine libc flavour
4239
4240 probe_libc(){
4241     pfx=$1
4242     pfx_no_=${pfx%_}
4243     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4244     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4245         eval ${pfx}libc_type=uclibc
4246         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4247     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4248         eval ${pfx}libc_type=glibc
4249         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4250     # MinGW headers can be installed on Cygwin, so check for newlib first.
4251     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4252         eval ${pfx}libc_type=newlib
4253         add_${pfx}cppflags -U__STRICT_ANSI__
4254     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4255     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4256         eval ${pfx}libc_type=mingw64
4257         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4258             add_compat msvcrt/snprintf.o
4259             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4260         fi
4261         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4262         eval test \$${pfx_no_}cc_type = "gcc" &&
4263             add_${pfx}cppflags -D__printf__=__gnu_printf__
4264     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4265          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4266         eval ${pfx}libc_type=mingw32
4267         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4268             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4269             die "ERROR: MinGW32 runtime version must be >= 3.15."
4270         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4271         eval test \$${pfx_no_}cc_type = "gcc" &&
4272             add_${pfx}cppflags -D__printf__=__gnu_printf__
4273     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4274         eval ${pfx}libc_type=msvcrt
4275         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4276         # 0x601 by default unless something else is set by the user.
4277         # This can easily lead to us detecting functions only present
4278         # in such new versions and producing binaries requiring windows 7.0.
4279         # Therefore explicitly set the default to XP unless the user has
4280         # set something else on the command line.
4281         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4282             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4283     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4284         eval ${pfx}libc_type=klibc
4285     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4286         eval ${pfx}libc_type=bionic
4287     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4288         eval ${pfx}libc_type=solaris
4289         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4290     fi
4291     check_${pfx}cc <<EOF
4292 #include <time.h>
4293 void *v = localtime_r;
4294 EOF
4295 test "$?" != 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
4296 #include <time.h>
4297 void *v = localtime_r;
4298 EOF
4299
4300 }
4301
4302 probe_libc
4303 test -n "$libc_type" && enable libc_$libc_type
4304 probe_libc host_
4305 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4306
4307 case $libc_type in
4308     bionic)
4309         add_compat strtod.o strtod=avpriv_strtod
4310         ;;
4311     msvcrt)
4312         add_compat strtod.o strtod=avpriv_strtod
4313         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4314                                      _snprintf=avpriv_snprintf  \
4315                                      vsnprintf=avpriv_vsnprintf
4316         ;;
4317 esac
4318
4319 # hacks for compiler/libc/os combinations
4320
4321 if enabled_all tms470 libc_glibc; then
4322     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4323     add_cppflags -D__USER_LABEL_PREFIX__=
4324     add_cppflags -D__builtin_memset=memset
4325     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4326     add_cflags   -pds=48    # incompatible redefinition of macro
4327 fi
4328
4329 if enabled_all ccc libc_glibc; then
4330     add_ldflags -Wl,-z,now  # calls to libots crash without this
4331 fi
4332
4333 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4334     add_cppflags '-I\$(SRC_PATH)/compat/float'
4335
4336 esc(){
4337     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4338 }
4339
4340 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4341
4342 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4343
4344 set_default libdir
4345 : ${shlibdir_default:="$libdir"}
4346
4347 set_default $PATHS_LIST
4348 set_default nm
4349
4350 # we need to build at least one lib type
4351 if ! enabled_any static shared; then
4352     cat <<EOF
4353 At least one library type must be built.
4354 Specify --enable-static to build the static libraries or --enable-shared to
4355 build the shared libraries as well. To only build the shared libraries specify
4356 --disable-static in addition to --enable-shared.
4357 EOF
4358     exit 1;
4359 fi
4360
4361 die_license_disabled() {
4362     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4363 }
4364
4365 die_license_disabled_gpl() {
4366     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4367 }
4368
4369 die_license_disabled gpl frei0r
4370 die_license_disabled gpl libcdio
4371 die_license_disabled gpl libsmbclient
4372 die_license_disabled gpl libutvideo
4373 die_license_disabled gpl libvidstab
4374 die_license_disabled gpl libx264
4375 die_license_disabled gpl libx265
4376 die_license_disabled gpl libxavs
4377 die_license_disabled gpl libxvid
4378 die_license_disabled gpl libzvbi
4379 die_license_disabled gpl x11grab
4380
4381 die_license_disabled nonfree libaacplus
4382 die_license_disabled nonfree libfaac
4383 die_license_disabled nonfree nvenc
4384 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4385 enabled gpl && die_license_disabled_gpl nonfree openssl
4386
4387 die_license_disabled version3 libopencore_amrnb
4388 die_license_disabled version3 libopencore_amrwb
4389 die_license_disabled version3 libsmbclient
4390 die_license_disabled version3 libvo_aacenc
4391 die_license_disabled version3 libvo_amrwbenc
4392
4393 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4394
4395 disabled optimizations || check_cflags -fomit-frame-pointer
4396
4397 enable_weak_pic() {
4398     disabled pic && return
4399     enable pic
4400     add_cppflags -DPIC
4401     case "$target_os" in
4402     mingw*|cygwin*)
4403         ;;
4404     *)
4405         add_cflags -fPIC
4406         ;;
4407     esac
4408     add_asflags  -fPIC
4409 }
4410
4411 enabled pic && enable_weak_pic
4412
4413 check_cc <<EOF || die "Symbol mangling check failed."
4414 int ff_extern;
4415 EOF
4416 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4417 extern_prefix=${sym%%ff_extern*}
4418
4419 check_cc <<EOF && enable_weak inline_asm
4420 void foo(void) { __asm__ volatile ("" ::); }
4421 EOF
4422
4423 _restrict=
4424 for restrict_keyword in restrict __restrict__ __restrict; do
4425     check_cc <<EOF && _restrict=$restrict_keyword && break
4426 void foo(char * $restrict_keyword p);
4427 EOF
4428 done
4429
4430 check_cc <<EOF && enable pragma_deprecated
4431 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4432 EOF
4433
4434 check_cc <<EOF && enable attribute_packed
4435 struct { int x; } __attribute__((packed)) x;
4436 EOF
4437
4438 check_cc <<EOF && enable attribute_may_alias
4439 union { int x; } __attribute__((may_alias)) x;
4440 EOF
4441
4442 check_cc <<EOF || die "endian test failed"
4443 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4444 EOF
4445 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4446
4447 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4448     if ! enabled bigendian && enabled altivec ;then
4449         enable vsx
4450     fi
4451 fi
4452
4453 check_gas() {
4454     log "check_gas using '$as' as AS"
4455     # :vararg is used on aarch64, arm and ppc altivec
4456     check_as <<EOF || return 1
4457 .macro m n, y:vararg=0
4458 \n: .int \y
4459 .endm
4460 m x
4461 EOF
4462     # .altmacro is only used in arm asm
4463     ! enabled arm || check_as <<EOF || return 1
4464 .altmacro
4465 EOF
4466     enable gnu_as
4467     return 0
4468 }
4469
4470 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4471     nogas=:
4472     enabled_any arm aarch64 && nogas=die
4473     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4474     as_noop=-v
4475
4476     case $as_type in
4477         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4478         gcc)  gaspp_as_type=gas ;;
4479         *)    gaspp_as_type=$as_type ;;
4480     esac
4481
4482     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4483
4484     test "${as#*gas-preprocessor.pl}" != "$as" ||
4485     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4486         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4487
4488     if ! check_gas ; then
4489         as=${gas:=$as}
4490         check_gas || \
4491             $nogas "GNU assembler not found, install/update gas-preprocessor"
4492     fi
4493
4494     check_as <<EOF && enable as_func
4495 .func test
4496 .endfunc
4497 EOF
4498 fi
4499
4500 check_inline_asm inline_asm_labels '"1:\n"'
4501
4502 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4503
4504 if enabled aarch64; then
4505     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4506     # internal assembler in clang 3.3 does not support this instruction
4507     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4508     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4509
4510     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4511
4512 elif enabled alpha; then
4513
4514     check_cflags -mieee
4515
4516 elif enabled arm; then
4517
4518     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4519 float func(float a, float b){ return a+b; }
4520 EOF
4521
4522     enabled thumb && check_cflags -mthumb || check_cflags -marm
4523
4524     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4525         enable vfp_args
4526     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4527         case "${cross_prefix:-$cc}" in
4528             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4529             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4530 __asm__ (".eabi_attribute 28, 1");
4531 int main(void) { return 0; }
4532 EOF
4533         esac
4534         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4535     fi
4536
4537     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4538     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4539     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4540     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4541     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4542     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4543     enabled setend  && check_insn setend  'setend be'
4544
4545     [ $target_os = linux ] || [ $target_os = android ] ||
4546         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4547             $ARCH_EXT_LIST_ARM
4548
4549     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4550
4551     check_as <<EOF && enable as_dn_directive
4552 ra .dn d0.i16
4553 .unreq ra
4554 EOF
4555
4556     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4557
4558 elif enabled mips; then
4559
4560     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4561     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4562      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4563     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4564      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4565     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4566      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4567     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4568      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4569
4570 elif enabled parisc; then
4571
4572     if enabled gcc; then
4573         case $($cc -dumpversion) in
4574             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4575         esac
4576     fi
4577
4578 elif enabled ppc; then
4579
4580     enable local_aligned_8 local_aligned_16 local_aligned_32
4581
4582     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4583     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4584     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4585     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4586
4587     # AltiVec flags: The FSF version of GCC differs from the Apple version
4588     if enabled altivec; then
4589         check_cflags -maltivec -mabi=altivec &&
4590         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4591         check_cflags -faltivec
4592
4593         # check if our compiler supports Motorola AltiVec C API
4594         check_cc <<EOF || disable altivec
4595 $inc_altivec_h
4596 int main(void) {
4597     vector signed int v1 = (vector signed int) { 0 };
4598     vector signed int v2 = (vector signed int) { 1 };
4599     v1 = vec_add(v1, v2);
4600     return 0;
4601 }
4602 EOF
4603
4604         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4605     fi
4606
4607     if enabled vsx; then
4608         check_cflags -mvsx
4609     fi
4610 elif enabled x86; then
4611
4612     check_builtin rdtsc    intrin.h   "__rdtsc()"
4613     check_builtin mm_empty mmintrin.h "_mm_empty()"
4614
4615     enable local_aligned_8 local_aligned_16 local_aligned_32
4616
4617     # check whether EBP is available on x86
4618     # As 'i' is stored on the stack, this program will crash
4619     # if the base pointer is used to access it because the
4620     # base pointer is cleared in the inline assembly code.
4621     check_exec_crash <<EOF && enable ebp_available
4622 volatile int i=0;
4623 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4624 return i;
4625 EOF
4626
4627     # check whether EBX is available on x86
4628     check_inline_asm ebx_available '""::"b"(0)' &&
4629         check_inline_asm ebx_available '"":::"%ebx"'
4630
4631     # check whether xmm clobbers are supported
4632     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4633
4634     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4635         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4636
4637     # check whether binutils is new enough to compile SSSE3/MMXEXT
4638     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4639     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4640
4641     if ! disabled_any asm mmx yasm; then
4642         if check_cmd $yasmexe --version; then
4643             enabled x86_64 && yasm_extra="-m amd64"
4644             yasm_debug="-g dwarf2"
4645         elif check_cmd nasm -v; then
4646             yasmexe=nasm
4647             yasm_debug="-g -F dwarf"
4648             if enabled x86_64; then
4649                 case "$objformat" in
4650                     elf)   objformat=elf64 ;;
4651                     win32) objformat=win64 ;;
4652                 esac
4653             fi
4654         fi
4655
4656         YASMFLAGS="-f $objformat $yasm_extra"
4657         enabled pic               && append YASMFLAGS "-DPIC"
4658         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4659         case "$objformat" in
4660             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4661         esac
4662
4663         check_yasm "movbe ecx, [5]" && enable yasm ||
4664             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4665         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4666         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4667         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4668         check_yasm "CPU amdnop" || disable cpunop
4669     fi
4670
4671     case "$cpu" in
4672         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4673             disable fast_clz
4674         ;;
4675     esac
4676
4677 fi
4678
4679 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4680
4681 check_ldflags -Wl,--as-needed
4682 check_ldflags -Wl,-z,noexecstack
4683
4684 if check_func dlopen; then
4685     ldl=
4686 elif check_func dlopen -ldl; then
4687     ldl=-ldl
4688 fi
4689
4690 frei0r_filter_extralibs='$ldl'
4691 frei0r_src_filter_extralibs='$ldl'
4692 ladspa_filter_extralibs='$ldl'
4693 nvenc_encoder_extralibs='$ldl'
4694
4695 if ! disabled network; then
4696     check_func getaddrinfo $network_extralibs
4697     check_func getservbyport $network_extralibs
4698     check_func inet_aton $network_extralibs
4699
4700     check_type netdb.h "struct addrinfo"
4701     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4702     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4703     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4704     check_type poll.h "struct pollfd"
4705     check_type netinet/sctp.h "struct sctp_event_subscribe"
4706     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4707     check_type netinet/in.h "struct sockaddr_in6"
4708     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4709     check_type "sys/types.h sys/socket.h" socklen_t
4710
4711     # Prefer arpa/inet.h over winsock2
4712     if check_header arpa/inet.h ; then
4713         check_func closesocket
4714     elif check_header winsock2.h ; then
4715         check_func_headers winsock2.h closesocket -lws2 &&
4716             network_extralibs="-lws2" ||
4717         { check_func_headers winsock2.h closesocket -lws2_32 &&
4718             network_extralibs="-lws2_32"; } || disable winsock2_h network
4719         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4720
4721         check_type ws2tcpip.h socklen_t
4722         check_type ws2tcpip.h "struct addrinfo"
4723         check_type ws2tcpip.h "struct group_source_req"
4724         check_type ws2tcpip.h "struct ip_mreq_source"
4725         check_type ws2tcpip.h "struct ipv6_mreq"
4726         check_type winsock2.h "struct pollfd"
4727         check_struct winsock2.h "struct sockaddr" sa_len
4728         check_type ws2tcpip.h "struct sockaddr_in6"
4729         check_type ws2tcpip.h "struct sockaddr_storage"
4730     else
4731         disable network
4732     fi
4733 fi
4734
4735 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4736 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4737 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4738 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4739 check_builtin sarestart signal.h "SA_RESTART"
4740 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4741
4742 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4743 check_func  ${malloc_prefix}memalign            && enable memalign
4744 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4745
4746 check_func  access
4747 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4748 check_func  fcntl
4749 check_func  fork
4750 check_func  gethrtime
4751 check_func  getopt
4752 check_func  getrusage
4753 check_func  gettimeofday
4754 check_func  gmtime_r
4755 check_func  isatty
4756 check_func  localtime_r
4757 check_func  mach_absolute_time
4758 check_func  mkstemp
4759 check_func  mmap
4760 check_func  mprotect
4761 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4762 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4763 check_func  sched_getaffinity
4764 check_func  setrlimit
4765 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4766 check_func  strerror_r
4767 check_func  sysconf
4768 check_func  sysctl
4769 check_func  usleep
4770
4771 check_func_headers conio.h kbhit
4772 check_func_headers io.h setmode
4773 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4774 check_func_headers stdlib.h getenv
4775
4776 check_func_headers windows.h CoTaskMemFree -lole32
4777 check_func_headers windows.h GetProcessAffinityMask
4778 check_func_headers windows.h GetProcessTimes
4779 check_func_headers windows.h GetSystemTimeAsFileTime
4780 check_func_headers windows.h MapViewOfFile
4781 check_func_headers windows.h PeekNamedPipe
4782 check_func_headers windows.h SetConsoleTextAttribute
4783 check_func_headers windows.h Sleep
4784 check_func_headers windows.h VirtualAlloc
4785 check_struct windows.h "CONDITION_VARIABLE" Ptr
4786 check_func_headers glob.h glob
4787 enabled xlib &&
4788     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4789
4790 check_header direct.h
4791 check_header dlfcn.h
4792 check_header dxva.h
4793 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4794 check_header io.h
4795 check_header libcrystalhd/libcrystalhd_if.h
4796 check_header mach/mach_time.h
4797 check_header malloc.h
4798 check_header net/udplite.h
4799 check_header poll.h
4800 check_header sys/mman.h
4801 check_header sys/param.h
4802 check_header sys/resource.h
4803 check_header sys/select.h
4804 check_header sys/time.h
4805 check_header sys/un.h
4806 check_header termios.h
4807 check_header unistd.h
4808 check_header vdpau/vdpau.h
4809 check_header vdpau/vdpau_x11.h
4810 check_header VideoDecodeAcceleration/VDADecoder.h
4811 check_header windows.h
4812 check_header X11/extensions/XvMClib.h
4813 check_header asm/types.h
4814
4815 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4816 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4817 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4818
4819 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4820
4821 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4822
4823 if ! disabled w32threads && ! enabled pthreads; then
4824     check_func_headers "windows.h process.h" _beginthreadex &&
4825         enable w32threads || disable w32threads
4826 fi
4827
4828 # check for some common methods of building with pthread support
4829 # do this before the optional library checks as some of them require pthreads
4830 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4831     enable pthreads
4832     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4833         add_cflags -pthread
4834         add_extralibs -pthread
4835     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4836         add_cflags -pthreads
4837         add_extralibs -pthreads
4838     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4839         add_cflags -ldl -pthread
4840         add_extralibs -ldl -pthread
4841     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4842         add_extralibs -lpthreadGC2
4843     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4844         :
4845     elif ! check_func pthread_join && ! check_func pthread_create; then
4846         disable pthreads
4847     fi
4848     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4849 fi
4850
4851
4852 if enabled pthreads; then
4853   check_func pthread_cancel
4854 fi
4855
4856 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4857 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4858 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4859
4860 check_lib math.h sin -lm && LIBM="-lm"
4861 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4862
4863 atan2f_args=2
4864 ldexpf_args=2
4865 powf_args=2
4866
4867 for func in $MATH_FUNCS; do
4868     eval check_mathfunc $func \${${func}_args:-1}
4869 done
4870
4871 # these are off by default, so fail if requested and not available
4872 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4873 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4874                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4875                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4876 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4877 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4878 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4879 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4880 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4881 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4882 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4883 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4884 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4885 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4886                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4887                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4888 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4889 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4890 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4891 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"
4892 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4893 enabled fontconfig        && enable libfontconfig
4894 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4895 enabled libfreetype       && require_libfreetype
4896 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4897 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4898 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4899                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4900                                done || die "ERROR: libgsm not found"; }
4901 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4902 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4903 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4904 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4905 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4906 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4907 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4908 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4909 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
4910                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4911                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4912                                die "ERROR: libopenjpeg not found"; }
4913 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4914 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4915 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4916 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4917 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4918 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4919 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
4920                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
4921 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4922 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4923 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4924 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4925     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4926     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4927 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4928 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4929                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4930                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4931 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4932 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4933 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4934 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4935 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4936 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4937 enabled libvpx            && {
4938     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4939                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4940     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4941                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4942     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4943     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx || disable libvpx_vp9_encoder; } }
4944 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4945 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
4946 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
4947                                { require libx264 x264.h x264_encoder_encode -lx264 &&
4948                                  warn "using libx264 without pkg-config"; } } &&
4949                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4950                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4951 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4952                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4953                                die "ERROR: libx265 version must be >= 17."; }
4954 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4955 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4956 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4957 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4958 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
4959                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
4960 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4961                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4962                                die "ERROR: openal not found"; } &&
4963                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4964                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4965 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4966                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4967                                die "ERROR: opencl not found"; } &&
4968                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4969                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4970                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4971 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4972                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4973                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4974                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4975                                die "ERROR: opengl not found."
4976                              }
4977 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4978                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4979                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4980                                die "ERROR: openssl not found"; }
4981 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4982
4983 if enabled gnutls; then
4984     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4985     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4986 fi
4987
4988 # libdc1394 check
4989 if enabled libdc1394; then
4990     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4991         enable libdc1394_2; } ||
4992     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4993         enable libdc1394_1; } ||
4994     die "ERROR: No version of libdc1394 found "
4995 fi
4996 if ! disabled sdl; then
4997     SDL_CONFIG="${cross_prefix}sdl-config"
4998     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4999         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5000         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5001         enable sdl
5002     else
5003         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5004             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5005             sdl_libs=$("${SDL_CONFIG}" --libs)
5006             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5007             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5008             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5009             enable sdl
5010         elif enabled sdl ; then
5011             die "ERROR: SDL not found"
5012         else
5013             disable sdl
5014         fi
5015     fi
5016 fi
5017 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5018
5019 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5020 enabled makeinfo && (makeinfo --version | \
5021                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5022     && enable makeinfo_html || disable makeinfo_html
5023 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5024 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5025 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5026 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5027
5028 check_header linux/fb.h
5029 check_header linux/videodev.h
5030 check_header linux/videodev2.h
5031 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5032
5033 check_header sys/videoio.h
5034 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5035
5036 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5037 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5038 # w32api 3.12 had it defined wrong
5039 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5040
5041 check_type "dshow.h" IBaseFilter
5042
5043 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5044 { check_header dev/bktr/ioctl_meteor.h &&
5045   check_header dev/bktr/ioctl_bt848.h; } ||
5046 { check_header machine/ioctl_meteor.h &&
5047   check_header machine/ioctl_bt848.h; } ||
5048 { check_header dev/video/meteor/ioctl_meteor.h &&
5049   check_header dev/video/bktr/ioctl_bt848.h; } ||
5050 check_header dev/ic/bt8xx.h
5051
5052 check_header sndio.h
5053 if check_struct sys/soundcard.h audio_buf_info bytes; then
5054     enable_safe sys/soundcard.h
5055 else
5056     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5057     #include <sys/soundcard.h>
5058     audio_buf_info abc;
5059 EOF
5060 fi
5061 check_header soundcard.h
5062
5063 enabled_any alsa_indev alsa_outdev &&
5064     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5065
5066 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5067     check_func jack_port_get_latency_range -ljack
5068
5069 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5070
5071 if enabled libcdio; then
5072     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5073     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5074     die "ERROR: libcdio-paranoia not found"
5075 fi
5076
5077 enabled xlib &&
5078     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5079
5080 if ! disabled libxcb; then
5081     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5082         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5083     } && disable x11grab && enable libxcb
5084
5085 if enabled libxcb; then
5086     disabled libxcb_shm || {
5087         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5088             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5089         } && check_header sys/shm.h && enable libxcb_shm; }
5090
5091     disabled libxcb_xfixes || {
5092         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5093             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5094         } && enable libxcb_xfixes; }
5095
5096     disabled libxcb_shape || {
5097         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5098             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5099         } && enable libxcb_shape; }
5100
5101     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5102     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5103 fi
5104 fi
5105
5106 if enabled x11grab; then
5107     enabled xlib || die "ERROR: Xlib not found"
5108     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5109     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5110 fi
5111
5112 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5113
5114 enabled dxva2api_h &&
5115     check_cc <<EOF && enable dxva2api_cobj
5116 #define _WIN32_WINNT 0x0600
5117 #define COBJMACROS
5118 #include <windows.h>
5119 #include <d3d9.h>
5120 #include <dxva2api.h>
5121 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5122 EOF
5123
5124 enabled vaapi &&
5125     check_lib va/va.h vaInitialize -lva ||
5126     disable vaapi
5127
5128 enabled vdpau &&
5129     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5130     disable vdpau
5131
5132 enabled vdpau && enabled xlib &&
5133     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5134     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5135     enable vdpau_x11
5136
5137 # Funny iconv installations are not unusual, so check it after all flags have been set
5138 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5139
5140 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5141
5142 # add some useful compiler flags if supported
5143 check_cflags -Wdeclaration-after-statement
5144 check_cflags -Wall
5145 check_cflags -Wdisabled-optimization
5146 check_cflags -Wpointer-arith
5147 check_cflags -Wredundant-decls
5148 check_cflags -Wwrite-strings
5149 check_cflags -Wtype-limits
5150 check_cflags -Wundef
5151 check_cflags -Wmissing-prototypes
5152 check_cflags -Wno-pointer-to-int-cast
5153 check_cflags -Wstrict-prototypes
5154 check_cflags -Wempty-body
5155 enabled extra_warnings && check_cflags -Winline
5156
5157 check_disable_warning(){
5158     warning_flag=-W${1#-Wno-}
5159     test_cflags $warning_flag && add_cflags $1
5160 }
5161
5162 check_disable_warning -Wno-parentheses
5163 check_disable_warning -Wno-switch
5164 check_disable_warning -Wno-format-zero-length
5165 check_disable_warning -Wno-pointer-sign
5166
5167 # add some linker flags
5168 check_ldflags -Wl,--warn-common
5169 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5170 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5171 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5172
5173 # add some strip flags
5174 # -wN '..@*' is more selective than -x, but not available everywhere.
5175 check_stripflags -wN \'..@*\' || check_stripflags -x
5176
5177 enabled neon_clobber_test &&
5178     check_ldflags -Wl,--wrap,avcodec_open2              \
5179                   -Wl,--wrap,avcodec_decode_audio4      \
5180                   -Wl,--wrap,avcodec_decode_video2      \
5181                   -Wl,--wrap,avcodec_decode_subtitle2   \
5182                   -Wl,--wrap,avcodec_encode_audio2      \
5183                   -Wl,--wrap,avcodec_encode_video2      \
5184                   -Wl,--wrap,avcodec_encode_subtitle    \
5185                   -Wl,--wrap,swr_convert                \
5186                   -Wl,--wrap,avresample_convert ||
5187     disable neon_clobber_test
5188
5189 enabled xmm_clobber_test &&
5190     check_ldflags -Wl,--wrap,avcodec_open2              \
5191                   -Wl,--wrap,avcodec_decode_audio4      \
5192                   -Wl,--wrap,avcodec_decode_video2      \
5193                   -Wl,--wrap,avcodec_decode_subtitle2   \
5194                   -Wl,--wrap,avcodec_encode_audio2      \
5195                   -Wl,--wrap,avcodec_encode_video       \
5196                   -Wl,--wrap,avcodec_encode_video2      \
5197                   -Wl,--wrap,avcodec_encode_subtitle    \
5198                   -Wl,--wrap,swr_convert                \
5199                   -Wl,--wrap,avresample_convert         \
5200                   -Wl,--wrap,sws_scale ||
5201     disable xmm_clobber_test
5202
5203 echo "X{};" > $TMPV
5204 if test_ldflags -Wl,--version-script,$TMPV; then
5205     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5206     check_cc <<EOF && enable symver_asm_label
5207 void ff_foo(void) __asm__ ("av_foo@VERSION");
5208 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5209 EOF
5210     check_cc <<EOF && enable symver_gnu_asm
5211 __asm__(".symver ff_foo,av_foo@VERSION");
5212 void ff_foo(void) {}
5213 EOF
5214 fi
5215
5216 if [ -z "$optflags" ]; then
5217     if enabled small; then
5218         optflags=$cflags_size
5219     elif enabled optimizations; then
5220         optflags=$cflags_speed
5221     else
5222         optflags=$cflags_noopt
5223     fi
5224 fi
5225
5226 check_optflags(){
5227     check_cflags "$@"
5228     enabled lto && check_ldflags "$@"
5229 }
5230
5231
5232 if enabled lto; then
5233     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5234     check_cflags  -flto
5235     check_ldflags -flto $cpuflags
5236     disable inline_asm_direct_symbol_refs
5237 fi
5238
5239 check_optflags $optflags
5240 check_optflags -fno-math-errno
5241 check_optflags -fno-signed-zeros
5242
5243 enabled ftrapv && check_cflags -ftrapv
5244
5245 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5246 int x;
5247 EOF
5248
5249
5250 if enabled icc; then
5251     # Just warnings, no remarks
5252     check_cflags -w1
5253     # -wd: Disable following warnings
5254     # 144, 167, 556: -Wno-pointer-sign
5255     # 188: enumerated type mixed with another type
5256     # 1292: attribute "foo" ignored
5257     # 1419: external declaration in primary source file
5258     # 10006: ignoring unknown option -fno-signed-zeros
5259     # 10148: ignoring unknown option -Wno-parentheses
5260     # 10156: ignoring option '-W'; no argument required
5261     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5262     # 11030: Warning unknown option --as-needed
5263     # 10156: ignoring option '-export'; no argument required
5264     check_ldflags -wd10156,11030
5265     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5266     enable ebp_available
5267     # The test above does not test linking
5268     enabled lto && disable symver_asm_label
5269     if enabled x86_32; then
5270         icc_version=$($cc -dumpversion)
5271         test ${icc_version%%.*} -ge 11 &&
5272             check_cflags -falign-stack=maintain-16-byte ||
5273             disable aligned_stack
5274     fi
5275 elif enabled ccc; then
5276     # disable some annoying warnings
5277     add_cflags -msg_disable bitnotint
5278     add_cflags -msg_disable mixfuncvoid
5279     add_cflags -msg_disable nonstandcast
5280     add_cflags -msg_disable unsupieee
5281 elif enabled gcc; then
5282     check_optflags -fno-tree-vectorize
5283     check_cflags -Werror=format-security
5284     check_cflags -Werror=implicit-function-declaration
5285     check_cflags -Werror=missing-prototypes
5286     check_cflags -Werror=return-type
5287     check_cflags -Werror=vla
5288     check_cflags -Wformat
5289     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5290 elif enabled llvm_gcc; then
5291     check_cflags -mllvm -stack-alignment=16
5292 elif enabled clang; then
5293     check_cflags -mllvm -stack-alignment=16
5294     check_cflags -Qunused-arguments
5295     check_cflags -Werror=implicit-function-declaration
5296     check_cflags -Werror=missing-prototypes
5297     check_cflags -Werror=return-type
5298 elif enabled cparser; then
5299     add_cflags -Wno-missing-variable-declarations
5300     add_cflags -Wno-empty-statement
5301 elif enabled armcc; then
5302     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5303     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5304     # 2523: use of inline assembly is deprecated
5305     add_cflags -W${armcc_opt},--diag_suppress=2523
5306     add_cflags -W${armcc_opt},--diag_suppress=1207
5307     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5308     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5309     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5310     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5311 elif enabled tms470; then
5312     add_cflags -pds=824 -pds=837
5313     disable inline_asm
5314 elif enabled pathscale; then
5315     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5316 elif enabled_any msvc icl; then
5317     enabled x86_32 && disable aligned_stack
5318     enabled_all x86_32 debug && add_cflags -Oy-
5319     enabled debug && add_ldflags -debug
5320     enable pragma_deprecated
5321     if enabled icl; then
5322         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5323         # (correctly) on icl 13.x.
5324         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5325             add_cflags -Qansi-alias
5326         # Some inline asm is not compilable in debug
5327         if enabled debug; then
5328             disable ebp_available
5329             disable ebx_available
5330         fi
5331     fi
5332     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5333     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5334 fi
5335
5336 case $as_type in
5337     clang)
5338         add_asflags -Qunused-arguments
5339     ;;
5340 esac
5341
5342 case $ld_type in
5343     clang)
5344         check_ldflags -Qunused-arguments
5345     ;;
5346 esac
5347
5348 case $target_os in
5349     osf1)
5350         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5351     ;;
5352     plan9)
5353         add_cppflags -Dmain=plan9_main
5354     ;;
5355 esac
5356
5357 enable frame_thread_encoder
5358
5359 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5360
5361 check_deps $CONFIG_LIST       \
5362            $CONFIG_EXTRA      \
5363            $HAVE_LIST         \
5364            $ALL_COMPONENTS    \
5365
5366 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"
5367
5368
5369 if test $target_os = "haiku"; then
5370     disable memalign
5371     disable posix_memalign
5372 fi
5373
5374 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5375     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5376     enable dxva2_lib
5377
5378 ! enabled_any memalign posix_memalign aligned_malloc &&
5379     enabled simd_align_16 && enable memalign_hack
5380
5381 # add_dep lib dep
5382 # -> enable ${lib}_deps_${dep}
5383 # -> add $dep to ${lib}_deps only once
5384 add_dep() {
5385     lib=$1
5386     dep=$2
5387     enabled "${lib}_deps_${dep}" && return 0
5388     enable  "${lib}_deps_${dep}"
5389     prepend "${lib}_deps" $dep
5390 }
5391
5392 # merge deps lib components
5393 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5394 merge_deps() {
5395     lib=$1
5396     shift
5397     for comp in $*; do
5398         enabled $comp || continue
5399         eval "dep=\"\$${comp}_deps\""
5400         for d in $dep; do
5401             add_dep $lib $d
5402         done
5403     done
5404 }
5405
5406 merge_deps libavfilter $FILTER_LIST
5407
5408 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5409
5410 for thread in $THREADS_LIST; do
5411     if enabled $thread; then
5412         test -n "$thread_type" &&
5413             die "ERROR: Only one thread type must be selected." ||
5414             thread_type="$thread"
5415     fi
5416 done
5417
5418 enabled zlib && add_cppflags -DZLIB_CONST
5419
5420 # conditional library dependencies, in linking order
5421 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5422 enabled aresample_filter    && prepend avfilter_deps "swresample"
5423 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5424 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5425 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5426 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5427 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5428 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5429 enabled pan_filter          && prepend avfilter_deps "swresample"
5430 enabled pp_filter           && prepend avfilter_deps "postproc"
5431 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5432 enabled resample_filter && prepend avfilter_deps "avresample"
5433 enabled sab_filter          && prepend avfilter_deps "swscale"
5434 enabled scale_filter    && prepend avfilter_deps "swscale"
5435 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5436 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5437 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5438 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5439
5440 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5441
5442 enabled opus_decoder    && prepend avcodec_deps "swresample"
5443
5444 expand_deps(){
5445     lib_deps=${1}_deps
5446     eval "deps=\$$lib_deps"
5447     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5448     unique $lib_deps
5449 }
5450
5451 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5452 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5453
5454 map 'expand_deps $v' $LIBRARY_LIST
5455
5456 echo "install prefix            $prefix"
5457 echo "source path               $source_path"
5458 echo "C compiler                $cc"
5459 echo "C library                 $libc_type"
5460 if test "$host_cc" != "$cc"; then
5461     echo "host C compiler           $host_cc"
5462     echo "host C library            $host_libc_type"
5463 fi
5464 echo "ARCH                      $arch ($cpu)"
5465 if test "$build_suffix" != ""; then
5466     echo "build suffix              $build_suffix"
5467 fi
5468 if test "$progs_suffix" != ""; then
5469     echo "progs suffix              $progs_suffix"
5470 fi
5471 if test "$extra_version" != ""; then
5472     echo "version string suffix     $extra_version"
5473 fi
5474 echo "big-endian                ${bigendian-no}"
5475 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5476 if enabled x86; then
5477     echo "${yasmexe}                      ${yasm-no}"
5478     echo "MMX enabled               ${mmx-no}"
5479     echo "MMXEXT enabled            ${mmxext-no}"
5480     echo "3DNow! enabled            ${amd3dnow-no}"
5481     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5482     echo "SSE enabled               ${sse-no}"
5483     echo "SSSE3 enabled             ${ssse3-no}"
5484     echo "AVX enabled               ${avx-no}"
5485     echo "XOP enabled               ${xop-no}"
5486     echo "FMA3 enabled              ${fma3-no}"
5487     echo "FMA4 enabled              ${fma4-no}"
5488     echo "i686 features enabled     ${i686-no}"
5489     echo "CMOV is fast              ${fast_cmov-no}"
5490     echo "EBX available             ${ebx_available-no}"
5491     echo "EBP available             ${ebp_available-no}"
5492 fi
5493 if enabled aarch64; then
5494     echo "NEON enabled              ${neon-no}"
5495     echo "VFP enabled               ${vfp-no}"
5496 fi
5497 if enabled arm; then
5498     echo "ARMv5TE enabled           ${armv5te-no}"
5499     echo "ARMv6 enabled             ${armv6-no}"
5500     echo "ARMv6T2 enabled           ${armv6t2-no}"
5501     echo "VFP enabled               ${vfp-no}"
5502     echo "NEON enabled              ${neon-no}"
5503     echo "THUMB enabled             ${thumb-no}"
5504 fi
5505 if enabled mips; then
5506     echo "MIPS FPU enabled          ${mipsfpu-no}"
5507     echo "MIPS32R2 enabled          ${mips32r2-no}"
5508     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5509     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5510 fi
5511 if enabled ppc; then
5512     echo "AltiVec enabled           ${altivec-no}"
5513     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5514     echo "PPC VSX optimizations     ${vsx-no}"
5515     echo "dcbzl available           ${dcbzl-no}"
5516 fi
5517 echo "debug symbols             ${debug-no}"
5518 echo "strip symbols             ${stripping-no}"
5519 echo "optimize for size         ${small-no}"
5520 echo "optimizations             ${optimizations-no}"
5521 echo "static                    ${static-no}"
5522 echo "shared                    ${shared-no}"
5523 echo "postprocessing support    ${postproc-no}"
5524 echo "new filter support        ${avfilter-no}"
5525 echo "network support           ${network-no}"
5526 echo "threading support         ${thread_type-no}"
5527 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5528 echo "SDL support               ${sdl-no}"
5529 echo "opencl enabled            ${opencl-no}"
5530 echo "texi2html enabled         ${texi2html-no}"
5531 echo "perl enabled              ${perl-no}"
5532 echo "pod2man enabled           ${pod2man-no}"
5533 echo "makeinfo enabled          ${makeinfo-no}"
5534 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5535 test -n "$random_seed" &&
5536     echo "random seed               ${random_seed}"
5537 echo
5538
5539 echo "External libraries:"
5540 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5541 echo
5542
5543 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5544     echo "Enabled ${type}s:"
5545     eval list=\$$(toupper $type)_LIST
5546     print_enabled '_*' $list | print_3_columns
5547     echo
5548 done
5549
5550 license="LGPL version 2.1 or later"
5551 if enabled nonfree; then
5552     license="nonfree and unredistributable"
5553 elif enabled gplv3; then
5554     license="GPL version 3 or later"
5555 elif enabled lgplv3; then
5556     license="LGPL version 3 or later"
5557 elif enabled gpl; then
5558     license="GPL version 2 or later"
5559 fi
5560
5561 echo "License: $license"
5562
5563 echo "Creating config.mak, config.h, and doc/config.texi..."
5564
5565 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5566
5567 enabled stripping || strip="echo skipping strip"
5568
5569 config_files="$TMPH config.mak doc/config.texi"
5570
5571 cat > config.mak <<EOF
5572 # Automatically generated by configure - do not modify!
5573 ifndef FFMPEG_CONFIG_MAK
5574 FFMPEG_CONFIG_MAK=1
5575 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5576 prefix=$prefix
5577 LIBDIR=\$(DESTDIR)$libdir
5578 SHLIBDIR=\$(DESTDIR)$shlibdir
5579 INCDIR=\$(DESTDIR)$incdir
5580 BINDIR=\$(DESTDIR)$bindir
5581 DATADIR=\$(DESTDIR)$datadir
5582 DOCDIR=\$(DESTDIR)$docdir
5583 MANDIR=\$(DESTDIR)$mandir
5584 SRC_PATH=$source_path
5585 ifndef MAIN_MAKEFILE
5586 SRC_PATH:=\$(SRC_PATH:.%=..%)
5587 endif
5588 CC_IDENT=$cc_ident
5589 ARCH=$arch
5590 INTRINSICS=$intrinsics
5591 CC=$cc
5592 CXX=$cxx
5593 AS=$as
5594 LD=$ld
5595 DEPCC=$dep_cc
5596 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5597 DEPAS=$as
5598 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5599 YASM=$yasmexe
5600 DEPYASM=$yasmexe
5601 AR=$ar
5602 ARFLAGS=$arflags
5603 AR_O=$ar_o
5604 RANLIB=$ranlib
5605 STRIP=$strip
5606 CP=cp -p
5607 LN_S=$ln_s
5608 CPPFLAGS=$CPPFLAGS
5609 CFLAGS=$CFLAGS
5610 CXXFLAGS=$CXXFLAGS
5611 ASFLAGS=$ASFLAGS
5612 AS_C=$AS_C
5613 AS_O=$AS_O
5614 CC_C=$CC_C
5615 CC_E=$CC_E
5616 CC_O=$CC_O
5617 CXX_C=$CXX_C
5618 CXX_O=$CXX_O
5619 LD_O=$LD_O
5620 LD_LIB=$LD_LIB
5621 LD_PATH=$LD_PATH
5622 DLLTOOL=$dlltool
5623 WINDRES=$windres
5624 DEPWINDRES=$dep_cc
5625 DOXYGEN=$doxygen
5626 LDFLAGS=$LDFLAGS
5627 LDEXEFLAGS=$LDEXEFLAGS
5628 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5629 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5630 YASMFLAGS=$YASMFLAGS
5631 BUILDSUF=$build_suffix
5632 PROGSSUF=$progs_suffix
5633 FULLNAME=$FULLNAME
5634 LIBPREF=$LIBPREF
5635 LIBSUF=$LIBSUF
5636 LIBNAME=$LIBNAME
5637 SLIBPREF=$SLIBPREF
5638 SLIBSUF=$SLIBSUF
5639 EXESUF=$EXESUF
5640 EXTRA_VERSION=$extra_version
5641 CCDEP=$CCDEP
5642 CXXDEP=$CXXDEP
5643 CCDEP_FLAGS=$CCDEP_FLAGS
5644 ASDEP=$ASDEP
5645 ASDEP_FLAGS=$ASDEP_FLAGS
5646 CC_DEPFLAGS=$CC_DEPFLAGS
5647 AS_DEPFLAGS=$AS_DEPFLAGS
5648 HOSTCC=$host_cc
5649 HOSTLD=$host_ld
5650 HOSTCFLAGS=$host_cflags
5651 HOSTCPPFLAGS=$host_cppflags
5652 HOSTEXESUF=$HOSTEXESUF
5653 HOSTLDFLAGS=$host_ldflags
5654 HOSTLIBS=$host_libs
5655 DEPHOSTCC=$host_cc
5656 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5657 HOSTCCDEP=$HOSTCCDEP
5658 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5659 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5660 HOSTCC_C=$HOSTCC_C
5661 HOSTCC_O=$HOSTCC_O
5662 HOSTLD_O=$HOSTLD_O
5663 TARGET_EXEC=$target_exec $target_exec_args
5664 TARGET_PATH=$target_path
5665 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5666 CFLAGS-ffplay=$sdl_cflags
5667 ZLIB=$($ldflags_filter -lz)
5668 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5669 EXTRALIBS=$extralibs
5670 COMPAT_OBJS=$compat_objs
5671 EXEOBJS=$exeobjs
5672 INSTALL=$install
5673 LIBTARGET=${LIBTARGET}
5674 SLIBNAME=${SLIBNAME}
5675 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5676 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5677 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5678 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5679 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5680 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5681 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5682 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5683 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5684 NOREDZONE_FLAGS=$noredzone_flags
5685 EOF
5686
5687 get_version(){
5688     lcname=lib${1}
5689     name=$(toupper $lcname)
5690     file=$source_path/$lcname/version.h
5691     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5692     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5693     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5694     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5695     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5696     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5697 }
5698
5699 map 'get_version $v' $LIBRARY_LIST
5700
5701 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5702
5703 print_program_libs(){
5704     eval "program_libs=\$${1}_libs"
5705     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5706 }
5707
5708 map 'print_program_libs $v' $PROGRAM_LIST
5709
5710 cat > $TMPH <<EOF
5711 /* Automatically generated by configure - do not modify! */
5712 #ifndef FFMPEG_CONFIG_H
5713 #define FFMPEG_CONFIG_H
5714 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5715 #define FFMPEG_LICENSE "$(c_escape $license)"
5716 #define CONFIG_THIS_YEAR 2015
5717 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5718 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5719 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5720 #define av_restrict $_restrict
5721 #define EXTERN_PREFIX "${extern_prefix}"
5722 #define EXTERN_ASM ${extern_prefix}
5723 #define BUILDSUF "$build_suffix"
5724 #define SLIBSUF "$SLIBSUF"
5725 #define HAVE_MMX2 HAVE_MMXEXT
5726 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5727 EOF
5728
5729 test -n "$assert_level" &&
5730     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5731
5732 test -n "$malloc_prefix" &&
5733     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5734
5735 if enabled yasm; then
5736     append config_files $TMPASM
5737     printf '' >$TMPASM
5738 fi
5739
5740 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5741
5742
5743 mkdir -p doc
5744 mkdir -p tests
5745 echo "@c auto-generated by configure" > doc/config.texi
5746
5747 print_config ARCH_   "$config_files" $ARCH_LIST
5748 print_config HAVE_   "$config_files" $HAVE_LIST
5749 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5750                                      $CONFIG_EXTRA      \
5751                                      $ALL_COMPONENTS    \
5752
5753 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5754 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5755
5756 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5757 cp_if_changed $TMPH config.h
5758 touch .config
5759
5760 enabled yasm && cp_if_changed $TMPASM config.asm
5761
5762 cat > $TMPH <<EOF
5763 /* Generated by ffconf */
5764 #ifndef AVUTIL_AVCONFIG_H
5765 #define AVUTIL_AVCONFIG_H
5766 EOF
5767
5768 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5769
5770 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5771
5772 cp_if_changed $TMPH libavutil/avconfig.h
5773
5774 if test -n "$WARNINGS"; then
5775     printf "\n$WARNINGS"
5776     enabled fatal_warnings && exit 1
5777 fi
5778
5779 # build pkg-config files
5780
5781 lib_version(){
5782     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5783 }
5784
5785 pkgconfig_generate(){
5786     name=$1
5787     shortname=${name#lib}${build_suffix}
5788     comment=$2
5789     version=$3
5790     libs=$4
5791     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5792     requires=${requires%, }
5793     enabled ${name#lib} || return 0
5794     mkdir -p $name
5795     cat <<EOF > $name/$name${build_suffix}.pc
5796 prefix=$prefix
5797 exec_prefix=\${prefix}
5798 libdir=$libdir
5799 includedir=$incdir
5800
5801 Name: $name
5802 Description: $comment
5803 Version: $version
5804 Requires: $(enabled shared || echo $requires)
5805 Requires.private: $(enabled shared && echo $requires)
5806 Conflicts:
5807 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5808 Libs.private: $(enabled shared && echo $libs)
5809 Cflags: -I\${includedir}
5810 EOF
5811
5812 mkdir -p doc/examples/pc-uninstalled
5813 includedir=${source_path}
5814 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5815     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5816 prefix=
5817 exec_prefix=
5818 libdir=\${pcfiledir}/../../../$name
5819 includedir=${includedir}
5820
5821 Name: $name
5822 Description: $comment
5823 Version: $version
5824 Requires: $requires
5825 Conflicts:
5826 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5827 Cflags: -I\${includedir}
5828 EOF
5829 }
5830
5831 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5832 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5833 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5834 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5835 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5836 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5837 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5838 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5839 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"