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="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 nut_muxer_select="riffenc"
2454 nuv_demuxer_select="riffdec"
2455 oga_muxer_select="ogg_muxer"
2456 ogg_demuxer_select="golomb"
2457 opus_muxer_select="ogg_muxer"
2458 psp_muxer_select="mov_muxer"
2459 rtp_demuxer_select="sdp_demuxer"
2460 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2461 rtsp_demuxer_select="http_protocol rtpdec"
2462 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2463 sap_demuxer_select="sdp_demuxer"
2464 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2465 sdp_demuxer_select="rtpdec"
2466 smoothstreaming_muxer_select="ismv_muxer"
2467 spdif_muxer_select="aac_parser"
2468 spx_muxer_select="ogg_muxer"
2469 tak_demuxer_select="tak_parser"
2470 tg2_muxer_select="mov_muxer"
2471 tgp_muxer_select="mov_muxer"
2472 vobsub_demuxer_select="mpegps_demuxer"
2473 w64_demuxer_select="wav_demuxer"
2474 w64_muxer_select="wav_muxer"
2475 wav_demuxer_select="riffdec"
2476 wav_muxer_select="riffenc"
2477 webm_muxer_select="riffenc"
2478 wtv_demuxer_select="riffdec"
2479 wtv_muxer_select="riffenc"
2480 xmv_demuxer_select="riffdec"
2481 xwma_demuxer_select="riffdec"
2482
2483 # indevs / outdevs
2484 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2485 alsa_outdev_deps="alsa_asoundlib_h"
2486 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2487 avfoundation_indev_select="avfoundation"
2488 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2489 caca_outdev_deps="libcaca"
2490 decklink_outdev_deps="decklink pthreads"
2491 decklink_outdev_extralibs="-lstdc++"
2492 decklink_indev_deps="decklink pthreads"
2493 decklink_indev_extralibs="-lstdc++"
2494 dshow_indev_deps="IBaseFilter"
2495 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2496 dv1394_indev_deps="dv1394"
2497 dv1394_indev_select="dv_demuxer"
2498 fbdev_indev_deps="linux_fb_h"
2499 fbdev_outdev_deps="linux_fb_h"
2500 gdigrab_indev_deps="CreateDIBSection"
2501 gdigrab_indev_extralibs="-lgdi32"
2502 gdigrab_indev_select="bmp_decoder"
2503 iec61883_indev_deps="libiec61883"
2504 jack_indev_deps="jack_jack_h sem_timedwait"
2505 lavfi_indev_deps="avfilter"
2506 libcdio_indev_deps="libcdio"
2507 libdc1394_indev_deps="libdc1394"
2508 libv4l2_indev_deps="libv4l2"
2509 openal_indev_deps="openal"
2510 opengl_outdev_deps="opengl"
2511 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2512 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2513 pulse_indev_deps="libpulse"
2514 pulse_outdev_deps="libpulse"
2515 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2516 qtkit_indev_select="qtkit"
2517 sdl_outdev_deps="sdl"
2518 sndio_indev_deps="sndio_h"
2519 sndio_outdev_deps="sndio_h"
2520 v4l_indev_deps="linux_videodev_h"
2521 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2522 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2523 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2524 vfwcap_indev_extralibs="-lavicap32"
2525 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2526 xv_outdev_extralibs="-lXv -lX11 -lXext"
2527 x11grab_indev_deps="x11grab"
2528 x11grab_xcb_indev_deps="libxcb"
2529
2530 # protocols
2531 bluray_protocol_deps="libbluray"
2532 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2533 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2534 ffrtmpcrypt_protocol_select="tcp_protocol"
2535 ffrtmphttp_protocol_deps="!librtmp_protocol"
2536 ffrtmphttp_protocol_select="http_protocol"
2537 ftp_protocol_select="tcp_protocol"
2538 gopher_protocol_select="network"
2539 http_protocol_select="tcp_protocol"
2540 httpproxy_protocol_select="tcp_protocol"
2541 https_protocol_select="tls_protocol"
2542 icecast_protocol_select="http_protocol"
2543 librtmp_protocol_deps="librtmp"
2544 librtmpe_protocol_deps="librtmp"
2545 librtmps_protocol_deps="librtmp"
2546 librtmpt_protocol_deps="librtmp"
2547 librtmpte_protocol_deps="librtmp"
2548 libsmbclient_protocol_deps="libsmbclient gplv3"
2549 libssh_protocol_deps="libssh"
2550 mmsh_protocol_select="http_protocol"
2551 mmst_protocol_select="network"
2552 rtmp_protocol_deps="!librtmp_protocol"
2553 rtmp_protocol_select="tcp_protocol"
2554 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2555 rtmps_protocol_deps="!librtmp_protocol"
2556 rtmps_protocol_select="tls_protocol"
2557 rtmpt_protocol_select="ffrtmphttp_protocol"
2558 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2559 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2560 rtp_protocol_select="udp_protocol"
2561 sctp_protocol_deps="struct_sctp_event_subscribe"
2562 sctp_protocol_select="network"
2563 srtp_protocol_select="rtp_protocol"
2564 tcp_protocol_select="network"
2565 tls_protocol_deps_any="openssl gnutls"
2566 tls_protocol_select="tcp_protocol"
2567 udp_protocol_select="network"
2568 udplite_protocol_select="network"
2569 unix_protocol_deps="sys_un_h"
2570 unix_protocol_select="network"
2571
2572 # filters
2573 amovie_filter_deps="avcodec avformat"
2574 aresample_filter_deps="swresample"
2575 ass_filter_deps="libass"
2576 asyncts_filter_deps="avresample"
2577 atempo_filter_deps="avcodec"
2578 atempo_filter_select="rdft"
2579 azmq_filter_deps="libzmq"
2580 blackframe_filter_deps="gpl"
2581 boxblur_filter_deps="gpl"
2582 bs2b_filter_deps="libbs2b"
2583 colormatrix_filter_deps="gpl"
2584 cropdetect_filter_deps="gpl"
2585 delogo_filter_deps="gpl"
2586 deshake_filter_select="pixelutils"
2587 drawtext_filter_deps="libfreetype"
2588 ebur128_filter_deps="gpl"
2589 eq_filter_deps="gpl"
2590 flite_filter_deps="libflite"
2591 frei0r_filter_deps="frei0r dlopen"
2592 frei0r_src_filter_deps="frei0r dlopen"
2593 fspp_filter_deps="gpl"
2594 geq_filter_deps="gpl"
2595 histeq_filter_deps="gpl"
2596 hqdn3d_filter_deps="gpl"
2597 interlace_filter_deps="gpl"
2598 kerndeint_filter_deps="gpl"
2599 ladspa_filter_deps="ladspa dlopen"
2600 mcdeint_filter_deps="avcodec gpl"
2601 movie_filter_deps="avcodec avformat"
2602 mpdecimate_filter_deps="gpl"
2603 mpdecimate_filter_select="pixelutils"
2604 mptestsrc_filter_deps="gpl"
2605 negate_filter_deps="lut_filter"
2606 perspective_filter_deps="gpl"
2607 pp7_filter_deps="gpl"
2608 ocv_filter_deps="libopencv"
2609 owdenoise_filter_deps="gpl"
2610 pan_filter_deps="swresample"
2611 phase_filter_deps="gpl"
2612 pp_filter_deps="gpl postproc"
2613 pullup_filter_deps="gpl"
2614 removelogo_filter_deps="avcodec avformat swscale"
2615 resample_filter_deps="avresample"
2616 sab_filter_deps="gpl swscale"
2617 scale_filter_deps="swscale"
2618 select_filter_select="pixelutils"
2619 smartblur_filter_deps="gpl swscale"
2620 showspectrum_filter_deps="avcodec"
2621 showspectrum_filter_select="rdft"
2622 spp_filter_deps="gpl avcodec"
2623 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2624 stereo3d_filter_deps="gpl"
2625 subtitles_filter_deps="avformat avcodec libass"
2626 super2xsai_filter_deps="gpl"
2627 tinterlace_filter_deps="gpl"
2628 vidstabdetect_filter_deps="libvidstab"
2629 vidstabtransform_filter_deps="libvidstab"
2630 pixfmts_super2xsai_test_deps="super2xsai_filter"
2631 tinterlace_merge_test_deps="tinterlace_filter"
2632 tinterlace_pad_test_deps="tinterlace_filter"
2633 uspp_filter_deps="gpl avcodec"
2634 zmq_filter_deps="libzmq"
2635 zoompan_filter_deps="swscale"
2636
2637 # examples
2638 avio_reading="avformat avcodec avutil"
2639 avcodec_example_deps="avcodec avutil"
2640 decoding_encoding_example_deps="avcodec avformat avutil"
2641 demuxing_decoding_example_deps="avcodec avformat avutil"
2642 extract_mvs_example_deps="avcodec avformat avutil"
2643 filter_audio_example_deps="avfilter avutil"
2644 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2645 filtering_video_example_deps="avfilter avcodec avformat avutil"
2646 metadata_example_deps="avformat avutil"
2647 muxing_example_deps="avcodec avformat avutil swscale"
2648 remuxing_example_deps="avcodec avformat avutil"
2649 resampling_audio_example_deps="avutil swresample"
2650 scaling_video_example_deps="avutil swscale"
2651 transcode_aac_example_deps="avcodec avformat swresample"
2652 transcoding_example_deps="avfilter avcodec avformat avutil"
2653
2654 # libraries, in linking order
2655 avcodec_deps="avutil"
2656 avdevice_deps="avformat avcodec avutil"
2657 avfilter_deps="avutil"
2658 avformat_deps="avcodec avutil"
2659 avresample_deps="avutil"
2660 postproc_deps="avutil gpl"
2661 swresample_deps="avutil"
2662 swscale_deps="avutil"
2663
2664 # programs
2665 ffmpeg_deps="avcodec avfilter avformat swresample"
2666 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2667                null_filter
2668                setpts_filter trim_filter"
2669 ffplay_deps="avcodec avformat swscale swresample sdl"
2670 ffplay_libs='$sdl_libs'
2671 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2672 ffprobe_deps="avcodec avformat"
2673 ffserver_deps="avformat fork sarestart"
2674 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2675
2676 # documentation
2677 podpages_deps="perl"
2678 manpages_deps="perl pod2man"
2679 htmlpages_deps="perl"
2680 htmlpages_deps_any="makeinfo_html texi2html"
2681 txtpages_deps="perl makeinfo"
2682 doc_deps_any="manpages htmlpages podpages txtpages"
2683
2684 # default parameters
2685
2686 logfile="config.log"
2687
2688 # installation paths
2689 prefix_default="/usr/local"
2690 bindir_default='${prefix}/bin'
2691 datadir_default='${prefix}/share/ffmpeg'
2692 docdir_default='${prefix}/share/doc/ffmpeg'
2693 incdir_default='${prefix}/include'
2694 libdir_default='${prefix}/lib'
2695 mandir_default='${prefix}/share/man'
2696
2697 # toolchain
2698 ar_default="ar"
2699 cc_default="gcc"
2700 cxx_default="g++"
2701 host_cc_default="gcc"
2702 cp_f="cp -f"
2703 doxygen_default="doxygen"
2704 install="install"
2705 ln_s="ln -s -f"
2706 nm_default="nm -g"
2707 objformat="elf"
2708 pkg_config_default=pkg-config
2709 if ranlib 2>&1 | grep -q "\-D "; then
2710     ranlib_default="ranlib -D"
2711 else
2712     ranlib_default="ranlib"
2713 fi
2714 strip_default="strip"
2715 yasmexe_default="yasm"
2716 windres_default="windres"
2717
2718 # OS
2719 target_os_default=$(tolower $(uname -s))
2720 host_os=$target_os_default
2721
2722 # machine
2723 if test "$target_os_default" = aix; then
2724     arch_default=$(uname -p)
2725     strip_default="strip -X32_64"
2726 else
2727     arch_default=$(uname -m)
2728 fi
2729 cpu="generic"
2730 intrinsics="none"
2731
2732 # configurable options
2733 enable $PROGRAM_LIST
2734 enable $DOCUMENT_LIST
2735 enable $EXAMPLE_LIST
2736 enable $(filter_out avresample $LIBRARY_LIST)
2737 enable stripping
2738
2739 enable asm
2740 enable debug
2741 enable doc
2742 enable faan faandct faanidct
2743 enable optimizations
2744 enable runtime_cpudetect
2745 enable safe_bitstream_reader
2746 enable static
2747 enable swscale_alpha
2748
2749 sws_max_filter_size_default=256
2750 set_default sws_max_filter_size
2751
2752 # Enable hwaccels by default.
2753 enable dxva2 vaapi vda vdpau xvmc
2754 enable xlib
2755
2756 # build settings
2757 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2758 LIBPREF="lib"
2759 LIBSUF=".a"
2760 FULLNAME='$(NAME)$(BUILDSUF)'
2761 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2762 SLIBPREF="lib"
2763 SLIBSUF=".so"
2764 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2765 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2766 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2767 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2768 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2769 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2770
2771 asflags_filter=echo
2772 cflags_filter=echo
2773 ldflags_filter=echo
2774
2775 AS_C='-c'
2776 AS_O='-o $@'
2777 CC_C='-c'
2778 CC_E='-E -o $@'
2779 CC_O='-o $@'
2780 CXX_C='-c'
2781 CXX_O='-o $@'
2782 LD_O='-o $@'
2783 LD_LIB='-l%'
2784 LD_PATH='-L'
2785 HOSTCC_C='-c'
2786 HOSTCC_E='-E -o $@'
2787 HOSTCC_O='-o $@'
2788 HOSTLD_O='-o $@'
2789
2790 host_libs='-lm'
2791 host_cflags_filter=echo
2792 host_ldflags_filter=echo
2793
2794 target_path='$(CURDIR)'
2795
2796 # since the object filename is not given with the -MM flag, the compiler
2797 # is only able to print the basename, and we must add the path ourselves
2798 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2799 DEPFLAGS='-MM'
2800
2801 # find source path
2802 if test -f configure; then
2803     source_path=.
2804 else
2805     source_path=$(cd $(dirname "$0"); pwd)
2806     echo "$source_path" | grep -q '[[:blank:]]' &&
2807         die "Out of tree builds are impossible with whitespace in source path."
2808     test -e "$source_path/config.h" &&
2809         die "Out of tree builds are impossible with config.h in source dir."
2810 fi
2811
2812 for v in "$@"; do
2813     r=${v#*=}
2814     l=${v%"$r"}
2815     r=$(sh_quote "$r")
2816     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2817 done
2818
2819 find_things(){
2820     thing=$1
2821     pattern=$2
2822     file=$source_path/$3
2823     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2824 }
2825
2826 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2827 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2828 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2829 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2830 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2831 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2832 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2833 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2834 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2835 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2836 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2837
2838 ALL_COMPONENTS="
2839     $BSF_LIST
2840     $DECODER_LIST
2841     $DEMUXER_LIST
2842     $ENCODER_LIST
2843     $FILTER_LIST
2844     $HWACCEL_LIST
2845     $INDEV_LIST
2846     $MUXER_LIST
2847     $OUTDEV_LIST
2848     $PARSER_LIST
2849     $PROTOCOL_LIST
2850 "
2851
2852 for n in $COMPONENT_LIST; do
2853     v=$(toupper ${n%s})_LIST
2854     eval enable \$$v
2855     eval ${n}_if_any="\$$v"
2856 done
2857
2858 enable $ARCH_EXT_LIST
2859
2860 die_unknown(){
2861     echo "Unknown option \"$1\"."
2862     echo "See $0 --help for available options."
2863     exit 1
2864 }
2865
2866 print_3_columns() {
2867     cat | tr ' ' '\n' | sort | pr -r -3 -t
2868 }
2869
2870 show_list() {
2871     suffix=_$1
2872     shift
2873     echo $* | sed s/$suffix//g | print_3_columns
2874     exit 0
2875 }
2876
2877 rand_list(){
2878     IFS=', '
2879     set -- $*
2880     unset IFS
2881     for thing; do
2882         comp=${thing%:*}
2883         prob=${thing#$comp}
2884         prob=${prob#:}
2885         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2886         echo "prob ${prob:-0.5}"
2887         printf '%s\n' $comp
2888     done
2889 }
2890
2891 do_random(){
2892     action=$1
2893     shift
2894     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2895     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2896 }
2897
2898 for opt do
2899     optval="${opt#*=}"
2900     case "$opt" in
2901         --extra-ldflags=*)
2902             add_ldflags $optval
2903         ;;
2904         --extra-ldexeflags=*)
2905             add_ldexeflags $optval
2906         ;;
2907         --extra-libs=*)
2908             add_extralibs $optval
2909         ;;
2910         --disable-devices)
2911             disable $INDEV_LIST $OUTDEV_LIST
2912         ;;
2913         --enable-debug=*)
2914             debuglevel="$optval"
2915         ;;
2916         --disable-programs)
2917             disable $PROGRAM_LIST
2918         ;;
2919         --disable-everything)
2920             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2921         ;;
2922         --disable-all)
2923             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2924             disable $LIBRARY_LIST $PROGRAM_LIST doc
2925         ;;
2926         --enable-random|--disable-random)
2927             action=${opt%%-random}
2928             do_random ${action#--} $COMPONENT_LIST
2929         ;;
2930         --enable-random=*|--disable-random=*)
2931             action=${opt%%-random=*}
2932             do_random ${action#--} $optval
2933         ;;
2934         --enable-*=*|--disable-*=*)
2935             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2936             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2937             eval list=\$$(toupper $thing)_LIST
2938             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2939             list=$(filter "$name" $list)
2940             [ "$list" = "" ] && warn "Option $opt did not match anything"
2941             $action $list
2942         ;;
2943         --enable-?*|--disable-?*)
2944             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2945             if is_in $option $COMPONENT_LIST; then
2946                 test $action = disable && action=unset
2947                 eval $action \$$(toupper ${option%s})_LIST
2948             elif is_in $option $CMDLINE_SELECT; then
2949                 $action $option
2950             else
2951                 die_unknown $opt
2952             fi
2953         ;;
2954         --list-*)
2955             NAME="${opt#--list-}"
2956             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2957             NAME=${NAME%s}
2958             eval show_list $NAME \$$(toupper $NAME)_LIST
2959         ;;
2960         --help|-h) show_help
2961         ;;
2962         --fatal-warnings) enable fatal_warnings
2963         ;;
2964         *)
2965             optname="${opt%%=*}"
2966             optname="${optname#--}"
2967             optname=$(echo "$optname" | sed 's/-/_/g')
2968             if is_in $optname $CMDLINE_SET; then
2969                 eval $optname='$optval'
2970             elif is_in $optname $CMDLINE_APPEND; then
2971                 append $optname "$optval"
2972             else
2973                 die_unknown $opt
2974             fi
2975         ;;
2976     esac
2977 done
2978
2979 disabled logging && logfile=/dev/null
2980
2981 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2982 set >> $logfile
2983
2984 test -n "$cross_prefix" && enable cross_compile
2985
2986 if enabled cross_compile; then
2987     test -n "$arch" && test -n "$target_os" ||
2988         die "Must specify target arch and OS when cross-compiling"
2989 fi
2990
2991 ar_default="${cross_prefix}${ar_default}"
2992 cc_default="${cross_prefix}${cc_default}"
2993 cxx_default="${cross_prefix}${cxx_default}"
2994 nm_default="${cross_prefix}${nm_default}"
2995 pkg_config_default="${cross_prefix}${pkg_config_default}"
2996 ranlib_default="${cross_prefix}${ranlib_default}"
2997 strip_default="${cross_prefix}${strip_default}"
2998 windres_default="${cross_prefix}${windres_default}"
2999
3000 sysinclude_default="${sysroot}/usr/include"
3001
3002 test -n "$valgrind" && toolchain="valgrind-memcheck"
3003
3004 case "$toolchain" in
3005     clang-asan)
3006         cc_default="clang"
3007         add_cflags  -fsanitize=address
3008         add_ldflags -fsanitize=address
3009     ;;
3010     clang-tsan)
3011         cc_default="clang"
3012         add_cflags  -fsanitize=thread -pie
3013         add_ldflags -fsanitize=thread -pie
3014     ;;
3015     clang-usan)
3016         cc_default="clang"
3017         add_cflags  -fsanitize=undefined
3018         add_ldflags -fsanitize=undefined
3019     ;;
3020     gcc-asan)
3021         cc_default="gcc"
3022         add_cflags  -fsanitize=address
3023         add_ldflags -fsanitize=address
3024     ;;
3025     gcc-tsan)
3026         cc_default="gcc"
3027         add_cflags  -fsanitize=thread -pie -fPIC
3028         add_ldflags -fsanitize=thread -pie -fPIC
3029     ;;
3030     gcc-usan)
3031         cc_default="gcc"
3032         add_cflags  -fsanitize=undefined
3033         add_ldflags -fsanitize=undefined
3034     ;;
3035     valgrind-massif)
3036         target_exec_default=${valgrind:-"valgrind"}
3037         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"
3038     ;;
3039     valgrind-memcheck)
3040         target_exec_default=${valgrind:-"valgrind"}
3041         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3042     ;;
3043     msvc)
3044         # Check whether the current MSVC version needs the C99 converter.
3045         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3046         # support enough of C99 to build ffmpeg. Default to the new
3047         # behaviour if the regexp was unable to match anything, since this
3048         # successfully parses the version number of existing supported
3049         # versions that require the converter (MSVC 2010 and 2012).
3050         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3051         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3052             cc_default="cl"
3053         else
3054             cc_default="c99wrap cl"
3055         fi
3056         ld_default="link"
3057         nm_default="dumpbin -symbols"
3058         ar_default="lib"
3059         target_os_default="win32"
3060         # Use a relative path for TMPDIR. This makes sure all the
3061         # ffconf temp files are written with a relative path, avoiding
3062         # issues with msys/win32 path conversion for MSVC parameters
3063         # such as -Fo<file> or -out:<file>.
3064         TMPDIR=.
3065     ;;
3066     icl)
3067         cc_default="icl"
3068         ld_default="xilink"
3069         nm_default="dumpbin -symbols"
3070         ar_default="xilib"
3071         target_os_default="win32"
3072         TMPDIR=.
3073     ;;
3074     gcov)
3075         add_cflags  -fprofile-arcs -ftest-coverage
3076         add_ldflags -fprofile-arcs -ftest-coverage
3077     ;;
3078     hardened)
3079         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3080         add_cflags   -fno-strict-overflow -fstack-protector-all
3081         add_ldflags  -Wl,-z,relro -Wl,-z,now
3082     ;;
3083     ?*)
3084         die "Unknown toolchain $toolchain"
3085     ;;
3086 esac
3087
3088 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3089     target_exec target_os yasmexe
3090 enabled cross_compile || host_cc_default=$cc
3091 set_default host_cc
3092
3093 pkg_config_fail_message=""
3094 if ! $pkg_config --version >/dev/null 2>&1; then
3095     warn "$pkg_config not found, library detection may fail."
3096     pkg_config=false
3097 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3098     pkg_config_fail_message="
3099 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3100 fi
3101
3102 if test $doxygen != $doxygen_default && \
3103   ! $doxygen --version >/dev/null 2>&1; then
3104     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3105 fi
3106
3107 exesuf() {
3108     case $1 in
3109         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3110     esac
3111 }
3112
3113 EXESUF=$(exesuf $target_os)
3114 HOSTEXESUF=$(exesuf $host_os)
3115
3116 # set temporary file name
3117 : ${TMPDIR:=$TEMPDIR}
3118 : ${TMPDIR:=$TMP}
3119 : ${TMPDIR:=/tmp}
3120
3121 if [ -n "$tempprefix" ] ; then
3122     mktemp(){
3123         echo $tempprefix.${HOSTNAME}.${UID}
3124     }
3125 elif ! check_cmd mktemp -u XXXXXX; then
3126     # simple replacement for missing mktemp
3127     # NOT SAFE FOR GENERAL USE
3128     mktemp(){
3129         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3130     }
3131 fi
3132
3133 tmpfile(){
3134     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3135         (set -C; exec > $tmp) 2>/dev/null ||
3136         die "Unable to create temporary file in $TMPDIR."
3137     append TMPFILES $tmp
3138     eval $1=$tmp
3139 }
3140
3141 trap 'rm -f -- $TMPFILES' EXIT
3142
3143 tmpfile TMPASM .asm
3144 tmpfile TMPC   .c
3145 tmpfile TMPCPP .cpp
3146 tmpfile TMPE   $EXESUF
3147 tmpfile TMPH   .h
3148 tmpfile TMPM   .m
3149 tmpfile TMPO   .o
3150 tmpfile TMPS   .S
3151 tmpfile TMPSH  .sh
3152 tmpfile TMPV   .ver
3153
3154 unset -f mktemp
3155
3156 chmod +x $TMPE
3157
3158 # make sure we can execute files in $TMPDIR
3159 cat > $TMPSH 2>> $logfile <<EOF
3160 #! /bin/sh
3161 EOF
3162 chmod +x $TMPSH >> $logfile 2>&1
3163 if ! $TMPSH >> $logfile 2>&1; then
3164     cat <<EOF
3165 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3166 variable to another directory and make sure that it is not mounted noexec.
3167 EOF
3168     die "Sanity test failed."
3169 fi
3170
3171 armasm_flags(){
3172     for flag; do
3173         case $flag in
3174             # Filter out MSVC cl.exe options from cflags that shouldn't
3175             # be passed to gas-preprocessor
3176             -M[TD]*)                                            ;;
3177             *)                  echo $flag                      ;;
3178         esac
3179    done
3180 }
3181
3182 ccc_flags(){
3183     for flag; do
3184         case $flag in
3185             -std=c99)           echo -c99                       ;;
3186             -mcpu=*)            echo -arch ${flag#*=}           ;;
3187             -mieee)             echo -ieee                      ;;
3188             -O*|-fast)          echo $flag                      ;;
3189             -fno-math-errno)    echo -assume nomath_errno       ;;
3190             -g)                 echo -g3                        ;;
3191             -Wall)              echo -msg_enable level2         ;;
3192             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3193             -Wl,*)              echo $flag                      ;;
3194             -f*|-W*)                                            ;;
3195             *)                  echo $flag                      ;;
3196         esac
3197    done
3198 }
3199
3200 cparser_flags(){
3201     for flag; do
3202         case $flag in
3203             -Wno-switch)             echo -Wno-switch-enum ;;
3204             -Wno-format-zero-length) ;;
3205             -Wdisabled-optimization) ;;
3206             -Wno-pointer-sign)       echo -Wno-other ;;
3207             *)                       echo $flag ;;
3208         esac
3209     done
3210 }
3211
3212 msvc_common_flags(){
3213     for flag; do
3214         case $flag in
3215             # In addition to specifying certain flags under the compiler
3216             # specific filters, they must be specified here as well or else the
3217             # generic catch all at the bottom will print the original flag.
3218             -Wall)                ;;
3219             -std=c99)             ;;
3220             # Common flags
3221             -fomit-frame-pointer) ;;
3222             -g)                   echo -Z7 ;;
3223             -fno-math-errno)      ;;
3224             -fno-common)          ;;
3225             -fno-signed-zeros)    ;;
3226             -fPIC)                ;;
3227             -mthumb)              ;;
3228             -march=*)             ;;
3229             -lz)                  echo zlib.lib ;;
3230             -lavifil32)           echo vfw32.lib ;;
3231             -lavicap32)           echo vfw32.lib user32.lib ;;
3232             -l*)                  echo ${flag#-l}.lib ;;
3233             -L*)                  echo -libpath:${flag#-L} ;;
3234             *)                    echo $flag ;;
3235         esac
3236     done
3237 }
3238
3239 msvc_flags(){
3240     msvc_common_flags "$@"
3241     for flag; do
3242         case $flag in
3243             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3244                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3245                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3246                                        -wd4554 \
3247                                        -wd4273 -wd4701 ;;
3248         esac
3249     done
3250 }
3251
3252 icl_flags(){
3253     msvc_common_flags "$@"
3254     for flag; do
3255         case $flag in
3256             # Despite what Intel's documentation says -Wall, which is supported
3257             # on Windows, does enable remarks so disable them here.
3258             -Wall)                echo $flag -Qdiag-disable:remark ;;
3259             -std=c99)             echo -Qstd=c99 ;;
3260             -flto)                echo -ipo ;;
3261         esac
3262     done
3263 }
3264
3265 icc_flags(){
3266     for flag; do
3267         case $flag in
3268             -flto)                echo -ipo ;;
3269             *)                    echo $flag ;;
3270         esac
3271     done
3272 }
3273
3274 pgi_flags(){
3275     for flag; do
3276         case $flag in
3277             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3278             -fomit-frame-pointer) echo -Mnoframe ;;
3279             -g)                   echo -gopt ;;
3280             *)                    echo $flag ;;
3281         esac
3282     done
3283 }
3284
3285 suncc_flags(){
3286     for flag; do
3287         case $flag in
3288             -march=*|-mcpu=*)
3289                 case "${flag#*=}" in
3290                     native)                   echo -xtarget=native       ;;
3291                     v9|niagara)               echo -xarch=sparc          ;;
3292                     ultrasparc)               echo -xarch=sparcvis       ;;
3293                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3294                     i586|pentium)             echo -xchip=pentium        ;;
3295                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3296                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3297                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3298                     pentium4*)          echo -xtarget=pentium4           ;;
3299                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3300                     *-sse3)             echo -xarch=sse3                 ;;
3301                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3302                     bonnell)                   echo -xarch=ssse3         ;;
3303                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3304                     westmere)                  echo -xtarget=westmere    ;;
3305                     silvermont)                echo -xarch=sse4_2        ;;
3306                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3307                     core-avx*|ivybridge|haswell|broadwell)
3308                                                echo -xarch=avx           ;;
3309                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3310                     btver1)                    echo -xarch=amdsse4a      ;;
3311                     btver2|bdver*)             echo -xarch=avx           ;;
3312                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3313                     k8|opteron|athlon64|athlon-fx)
3314                                                echo -xarch=sse2a         ;;
3315                     athlon*)                   echo -xarch=pentium_proa  ;;
3316                 esac
3317                 ;;
3318             -std=c99)             echo -xc99              ;;
3319             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3320             -fPIC)                echo -KPIC -xcode=pic32 ;;
3321             -W*,*)                echo $flag              ;;
3322             -f*-*|-W*|-mimpure-text)                      ;;
3323             -shared)              echo -G                 ;;
3324             *)                    echo $flag              ;;
3325         esac
3326     done
3327 }
3328
3329 tms470_flags(){
3330     for flag; do
3331         case $flag in
3332             -march=*|-mcpu=*)
3333                 case "${flag#*=}" in
3334                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3335                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3336                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3337                     armv6*|arm11*)          echo -mv=6   ;;
3338                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3339                                             echo -mv=5e  ;;
3340                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3341                 esac
3342                 ;;
3343             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3344             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3345             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3346             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3347             -msoft-float)   echo --float_support=vfplib       ;;
3348             -O[0-3]|-mf=*)  echo $flag                        ;;
3349             -g)             echo -g -mn                       ;;
3350             -pds=*)         echo $flag                        ;;
3351             -D*|-I*)        echo $flag                        ;;
3352             --gcc|--abi=*)  echo $flag                        ;;
3353             -me)            echo $flag                        ;;
3354         esac
3355     done
3356 }
3357
3358 probe_cc(){
3359     pfx=$1
3360     _cc=$2
3361
3362     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3363     unset _ld_o _ldflags _ld_lib _ld_path
3364     unset _depflags _DEPCMD _DEPFLAGS
3365     _flags_filter=echo
3366
3367     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3368         true # no-op to avoid reading stdin in following checks
3369     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3370         _type=llvm_gcc
3371         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3372         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3373         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3374         _cflags_speed='-O3'
3375         _cflags_size='-Os'
3376     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3377         _type=gcc
3378         gcc_version=$($_cc --version | head -n1)
3379         gcc_basever=$($_cc -dumpversion)
3380         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3381         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3382         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3383         if ! $_cc -dumpversion | grep -q '^2\.'; then
3384             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3385         fi
3386         _cflags_speed='-O3'
3387         _cflags_size='-Os'
3388     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3389         _type=icc
3390         _ident=$($_cc --version | head -n1)
3391         _depflags='-MMD'
3392         _cflags_speed='-O3'
3393         _cflags_size='-Os'
3394         _cflags_noopt='-O1'
3395         _flags_filter=icc_flags
3396     elif $_cc -v 2>&1 | grep -q xlc; then
3397         _type=xlc
3398         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3399         _cflags_speed='-O5'
3400         _cflags_size='-O5 -qcompact'
3401     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3402         _type=ccc
3403         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3404         _DEPFLAGS='-M'
3405         _cflags_speed='-fast'
3406         _cflags_size='-O1'
3407         _flags_filter=ccc_flags
3408     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3409         test -d "$sysroot" || die "No valid sysroot specified."
3410         _type=armcc
3411         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3412         armcc_conf="$PWD/armcc.conf"
3413         $_cc --arm_linux_configure                 \
3414              --arm_linux_config_file="$armcc_conf" \
3415              --configure_sysroot="$sysroot"        \
3416              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3417              die "Error creating armcc configuration file."
3418         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3419         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3420         as_default="${cross_prefix}gcc"
3421         _depflags='-MMD'
3422         _cflags_speed='-O3'
3423         _cflags_size='-Os'
3424     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3425         _type=tms470
3426         _ident=$($_cc -version | head -n1 | tr -s ' ')
3427         _flags='--gcc --abi=eabi -me'
3428         _cc_e='-ppl -fe=$@'
3429         _cc_o='-fe=$@'
3430         _depflags='-ppa -ppd=$(@:.o=.d)'
3431         _cflags_speed='-O3 -mf=5'
3432         _cflags_size='-O3 -mf=2'
3433         _flags_filter=tms470_flags
3434     elif $_cc -v 2>&1 | grep -q clang; then
3435         _type=clang
3436         _ident=$($_cc --version | head -n1)
3437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3438         _cflags_speed='-O3'
3439         _cflags_size='-Os'
3440     elif $_cc -V 2>&1 | grep -q Sun; then
3441         _type=suncc
3442         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3443         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3444         _DEPFLAGS='-xM1 -xc99'
3445         _ldflags='-std=c99'
3446         _cflags_speed='-O5'
3447         _cflags_size='-O5 -xspace'
3448         _flags_filter=suncc_flags
3449     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3450         _type=pathscale
3451         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3452         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3453         _cflags_speed='-O2'
3454         _cflags_size='-Os'
3455         _flags_filter='filter_out -Wdisabled-optimization'
3456     elif $_cc -v 2>&1 | grep -q Open64; then
3457         _type=open64
3458         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3459         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3460         _cflags_speed='-O2'
3461         _cflags_size='-Os'
3462         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3463     elif $_cc -V 2>&1 | grep -q Portland; then
3464         _type=pgi
3465         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3466         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3467         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3468         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3469         _cflags_noopt="-O"
3470         _flags_filter=pgi_flags
3471     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3472         _type=armasm
3473         _ident=$($_cc | head -n1)
3474         # 4509: "This form of conditional instruction is deprecated"
3475         _flags="-nologo -ignore 4509"
3476         _flags_filter=armasm_flags
3477     elif $_cc 2>&1 | grep -q Intel; then
3478         _type=icl
3479         _ident=$($cc 2>&1 | head -n1)
3480         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3481         # Not only is O3 broken on 13.x+ but it is slower on all previous
3482         # versions (tested) as well.
3483         _cflags_speed="-O2"
3484         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3485         if $_cc 2>&1 | grep -q Linker; then
3486             _ld_o='-out:$@'
3487         else
3488             _ld_o='-Fe$@'
3489         fi
3490         _cc_o='-Fo$@'
3491         _cc_e='-P'
3492         _flags_filter=icl_flags
3493         _ld_lib='lib%.a'
3494         _ld_path='-libpath:'
3495         # -Qdiag-error to make icl error when seeing certain unknown arguments
3496         _flags='-nologo -Qdiag-error:4044,10157'
3497         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3498         # with MSVC which enables it by default.
3499         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3500         if [ $pfx = hostcc ]; then
3501             append _cflags -Dsnprintf=_snprintf
3502         fi
3503         disable stripping
3504     elif $_cc 2>&1 | grep -q Microsoft; then
3505         _type=msvc
3506         _ident=$($cc 2>&1 | head -n1)
3507         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3508         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3509         _cflags_speed="-O2"
3510         _cflags_size="-O1"
3511         if $_cc 2>&1 | grep -q Linker; then
3512             _ld_o='-out:$@'
3513         else
3514             _ld_o='-Fe$@'
3515         fi
3516         _cc_o='-Fo$@'
3517         _cc_e='-P -Fi$@'
3518         _flags_filter=msvc_flags
3519         _ld_lib='lib%.a'
3520         _ld_path='-libpath:'
3521         _flags='-nologo'
3522         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3523         if [ $pfx = hostcc ]; then
3524             append _cflags -Dsnprintf=_snprintf
3525         fi
3526         disable stripping
3527     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3528         _type=cparser
3529         _ident=$($_cc --version | head -n1)
3530         _depflags='-MMD'
3531         _cflags_speed='-O4'
3532         _cflags_size='-O2'
3533         _flags_filter=cparser_flags
3534     fi
3535
3536     eval ${pfx}_type=\$_type
3537     eval ${pfx}_ident=\$_ident
3538 }
3539
3540 set_ccvars(){
3541     eval ${1}_C=\${_cc_c-\${${1}_C}}
3542     eval ${1}_E=\${_cc_e-\${${1}_E}}
3543     eval ${1}_O=\${_cc_o-\${${1}_O}}
3544
3545     if [ -n "$_depflags" ]; then
3546         eval ${1}_DEPFLAGS=\$_depflags
3547     else
3548         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3549         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3550         eval DEP${1}FLAGS=\$_flags
3551     fi
3552 }
3553
3554 probe_cc cc "$cc"
3555 cflags_filter=$_flags_filter
3556 cflags_speed=$_cflags_speed
3557 cflags_size=$_cflags_size
3558 cflags_noopt=$_cflags_noopt
3559 add_cflags $_flags $_cflags
3560 cc_ldflags=$_ldflags
3561 set_ccvars CC
3562
3563 probe_cc hostcc "$host_cc"
3564 host_cflags_filter=$_flags_filter
3565 add_host_cflags  $_flags $_cflags
3566 set_ccvars HOSTCC
3567
3568 test -n "$cc_type" && enable $cc_type ||
3569     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3570
3571 : ${as_default:=$cc}
3572 : ${dep_cc_default:=$cc}
3573 : ${ld_default:=$cc}
3574 : ${host_ld_default:=$host_cc}
3575 set_default ar as dep_cc ld host_ld windres
3576
3577 probe_cc as "$as"
3578 asflags_filter=$_flags_filter
3579 add_asflags $_flags $_cflags
3580 set_ccvars AS
3581
3582 probe_cc ld "$ld"
3583 ldflags_filter=$_flags_filter
3584 add_ldflags $_flags $_ldflags
3585 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3586 LD_O=${_ld_o-$LD_O}
3587 LD_LIB=${_ld_lib-$LD_LIB}
3588 LD_PATH=${_ld_path-$LD_PATH}
3589
3590 probe_cc hostld "$host_ld"
3591 host_ldflags_filter=$_flags_filter
3592 add_host_ldflags $_flags $_ldflags
3593 HOSTLD_O=${_ld_o-$HOSTLD_O}
3594
3595 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3596     probe_cc depcc "$dep_cc"
3597     CCDEP=${_DEPCMD:-$DEPCMD}
3598     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3599     DEPCCFLAGS=$_flags
3600 fi
3601
3602 if $ar 2>&1 | grep -q Microsoft; then
3603     arflags="-nologo"
3604     ar_o='-out:$@'
3605 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3606     arflags="rq"
3607     ar_o='$@'
3608 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3609     arflags='-Xany -r -c'
3610     ar_o='$@'
3611 elif $ar 2>&1 | grep -q "\[D\] "; then
3612     arflags="rcD"
3613     ar_o='$@'
3614 else
3615     arflags="rc"
3616     ar_o='$@'
3617 fi
3618
3619 add_cflags $extra_cflags
3620 add_cxxflags $extra_cxxflags
3621 add_asflags $extra_cflags
3622
3623 if test -n "$sysroot"; then
3624     case "$cc_type" in
3625         gcc|llvm_gcc|clang)
3626             add_cppflags --sysroot="$sysroot"
3627             add_ldflags --sysroot="$sysroot"
3628 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3629             add_cppflags -isysroot "$sysroot"
3630             add_ldflags -isysroot "$sysroot"
3631         ;;
3632         tms470)
3633             add_cppflags -I"$sysinclude"
3634             add_ldflags  --sysroot="$sysroot"
3635         ;;
3636     esac
3637 fi
3638
3639 if test "$cpu" = host; then
3640     enabled cross_compile &&
3641         die "--cpu=host makes no sense when cross-compiling."
3642
3643     case "$cc_type" in
3644         gcc|llvm_gcc)
3645             check_native(){
3646                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3647                 sed -n "/cc1.*$1=/{
3648                             s/.*$1=\\([^ ]*\\).*/\\1/
3649                             p
3650                             q
3651                         }" $TMPE
3652             }
3653             cpu=$(check_native -march || check_native -mcpu)
3654         ;;
3655     esac
3656
3657     test "${cpu:-host}" = host &&
3658         die "--cpu=host not supported with compiler $cc"
3659 fi
3660
3661 # Deal with common $arch aliases
3662 case "$arch" in
3663     aarch64|arm64)
3664         arch="aarch64"
3665     ;;
3666     arm*|iPad*|iPhone*)
3667         arch="arm"
3668     ;;
3669     mips*|IP*)
3670         arch="mips"
3671     ;;
3672     parisc*|hppa*)
3673         arch="parisc"
3674     ;;
3675     "Power Macintosh"|ppc*|powerpc*)
3676         arch="ppc"
3677     ;;
3678     s390|s390x)
3679         arch="s390"
3680     ;;
3681     sh4|sh)
3682         arch="sh4"
3683     ;;
3684     sun4u|sparc*)
3685         arch="sparc"
3686     ;;
3687     tilegx|tile-gx)
3688         arch="tilegx"
3689     ;;
3690     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3691         arch="x86"
3692     ;;
3693 esac
3694
3695 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3696 enable $arch
3697
3698 # Add processor-specific flags
3699 if enabled aarch64; then
3700
3701     case $cpu in
3702         armv*)
3703             cpuflags="-march=$cpu"
3704         ;;
3705         *)
3706             cpuflags="-mcpu=$cpu"
3707         ;;
3708     esac
3709
3710 elif enabled alpha; then
3711
3712     cpuflags="-mcpu=$cpu"
3713
3714 elif enabled arm; then
3715
3716     check_arm_arch() {
3717         check_cpp_condition stddef.h \
3718             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3719             $cpuflags
3720     }
3721
3722     probe_arm_arch() {
3723         if   check_arm_arch 4;        then echo armv4;
3724         elif check_arm_arch 4T;       then echo armv4t;
3725         elif check_arm_arch 5;        then echo armv5;
3726         elif check_arm_arch 5E;       then echo armv5e;
3727         elif check_arm_arch 5T;       then echo armv5t;
3728         elif check_arm_arch 5TE;      then echo armv5te;
3729         elif check_arm_arch 5TEJ;     then echo armv5te;
3730         elif check_arm_arch 6;        then echo armv6;
3731         elif check_arm_arch 6J;       then echo armv6j;
3732         elif check_arm_arch 6K;       then echo armv6k;
3733         elif check_arm_arch 6Z;       then echo armv6z;
3734         elif check_arm_arch 6ZK;      then echo armv6zk;
3735         elif check_arm_arch 6T2;      then echo armv6t2;
3736         elif check_arm_arch 7;        then echo armv7;
3737         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3738         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3739         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3740         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3741         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3742         fi
3743     }
3744
3745     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3746
3747     case $cpu in
3748         armv*)
3749             cpuflags="-march=$cpu"
3750             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3751         ;;
3752         *)
3753             cpuflags="-mcpu=$cpu"
3754             case $cpu in
3755                 cortex-a*)                               subarch=armv7a  ;;
3756                 cortex-r*)                               subarch=armv7r  ;;
3757                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3758                 arm11*)                                  subarch=armv6   ;;
3759                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3760                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3761                 *)                             subarch=$(probe_arm_arch) ;;
3762             esac
3763         ;;
3764     esac
3765
3766     case "$subarch" in
3767         armv5t*)    enable fast_clz                ;;
3768         armv[6-8]*)
3769             enable fast_clz
3770             disabled fast_unaligned || enable fast_unaligned
3771             ;;
3772     esac
3773
3774 elif enabled avr32; then
3775
3776     case $cpu in
3777         ap7[02]0[0-2])
3778             subarch="avr32_ap"
3779             cpuflags="-mpart=$cpu"
3780         ;;
3781         ap)
3782             subarch="avr32_ap"
3783             cpuflags="-march=$cpu"
3784         ;;
3785         uc3[ab]*)
3786             subarch="avr32_uc"
3787             cpuflags="-mcpu=$cpu"
3788         ;;
3789         uc)
3790             subarch="avr32_uc"
3791             cpuflags="-march=$cpu"
3792         ;;
3793     esac
3794
3795 elif enabled bfin; then
3796
3797     cpuflags="-mcpu=$cpu"
3798
3799 elif enabled mips; then
3800
3801     cpuflags="-march=$cpu"
3802
3803     case $cpu in
3804         24kc)
3805             disable mipsfpu
3806             disable mipsdspr1
3807             disable mipsdspr2
3808         ;;
3809         24kf*)
3810             disable mipsdspr1
3811             disable mipsdspr2
3812         ;;
3813         24kec|34kc|1004kc)
3814             disable mipsfpu
3815             disable mipsdspr2
3816         ;;
3817         24kef*|34kf*|1004kf*)
3818             disable mipsdspr2
3819         ;;
3820         74kc)
3821             disable mipsfpu
3822         ;;
3823     esac
3824
3825 elif enabled ppc; then
3826
3827     disable ldbrx
3828     disable vsx
3829
3830     case $(tolower $cpu) in
3831         601|ppc601|powerpc601)
3832             cpuflags="-mcpu=601"
3833             disable altivec
3834         ;;
3835         603*|ppc603*|powerpc603*)
3836             cpuflags="-mcpu=603"
3837             disable altivec
3838         ;;
3839         604*|ppc604*|powerpc604*)
3840             cpuflags="-mcpu=604"
3841             disable altivec
3842         ;;
3843         g3|75*|ppc75*|powerpc75*)
3844             cpuflags="-mcpu=750"
3845             disable altivec
3846         ;;
3847         g4|745*|ppc745*|powerpc745*)
3848             cpuflags="-mcpu=7450"
3849         ;;
3850         74*|ppc74*|powerpc74*)
3851             cpuflags="-mcpu=7400"
3852         ;;
3853         g5|970|ppc970|powerpc970)
3854             cpuflags="-mcpu=970"
3855         ;;
3856         power[3-8]*)
3857             cpuflags="-mcpu=$cpu"
3858         ;;
3859         cell)
3860             cpuflags="-mcpu=cell"
3861             enable ldbrx
3862         ;;
3863         e500mc)
3864             cpuflags="-mcpu=e500mc"
3865             disable altivec
3866         ;;
3867         e500v2)
3868             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3869             disable altivec
3870             disable dcbzl
3871         ;;
3872         e500)
3873             cpuflags="-mcpu=8540 -mhard-float"
3874             disable altivec
3875             disable dcbzl
3876         ;;
3877     esac
3878
3879 elif enabled sparc; then
3880
3881     case $cpu in
3882         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3883             cpuflags="-mcpu=$cpu"
3884         ;;
3885         ultrasparc*|niagara[234])
3886             cpuflags="-mcpu=$cpu"
3887         ;;
3888     esac
3889
3890 elif enabled x86; then
3891
3892     case $cpu in
3893         i[345]86|pentium)
3894             cpuflags="-march=$cpu"
3895             disable i686
3896             disable mmx
3897         ;;
3898         # targets that do NOT support nopl and conditional mov (cmov)
3899         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3900             cpuflags="-march=$cpu"
3901             disable i686
3902         ;;
3903         # targets that do support nopl and conditional mov (cmov)
3904         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3905         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3906             cpuflags="-march=$cpu"
3907             enable i686
3908             enable fast_cmov
3909         ;;
3910         # targets that do support conditional mov but on which it's slow
3911         pentium4|pentium4m|prescott|nocona)
3912             cpuflags="-march=$cpu"
3913             enable i686
3914             disable fast_cmov
3915         ;;
3916     esac
3917
3918 fi
3919
3920 if [ "$cpu" != generic ]; then
3921     add_cflags  $cpuflags
3922     add_asflags $cpuflags
3923 fi
3924
3925 # compiler sanity check
3926 check_exec <<EOF
3927 int main(void){ return 0; }
3928 EOF
3929 if test "$?" != 0; then
3930     echo "$cc is unable to create an executable file."
3931     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3932         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3933         echo "Only do this if you know what cross compiling means."
3934     fi
3935     die "C compiler test failed."
3936 fi
3937
3938 add_cppflags -D_ISOC99_SOURCE
3939 add_cxxflags -D__STDC_CONSTANT_MACROS
3940 check_cflags -std=c99
3941 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3942 #include <stdlib.h>
3943 EOF
3944 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3945 #include <stdlib.h>
3946 EOF
3947
3948 add_host_cppflags -D_ISOC99_SOURCE
3949 check_host_cflags -std=c99
3950 check_host_cflags -Wall
3951 check_host_cflags -O3
3952
3953 check_64bit(){
3954     arch32=$1
3955     arch64=$2
3956     expr=$3
3957     check_code cc "" "int test[2*($expr) - 1]" &&
3958         subarch=$arch64 || subarch=$arch32
3959 }
3960
3961 case "$arch" in
3962     aarch64|alpha|ia64)
3963         spic=$shared
3964     ;;
3965     mips)
3966         check_64bit mips mips64 '_MIPS_SIM > 1'
3967         spic=$shared
3968     ;;
3969     parisc)
3970         check_64bit parisc parisc64 'sizeof(void *) > 4'
3971         spic=$shared
3972     ;;
3973     ppc)
3974         check_64bit ppc ppc64 'sizeof(void *) > 4'
3975         spic=$shared
3976     ;;
3977     s390)
3978         check_64bit s390 s390x 'sizeof(void *) > 4'
3979         spic=$shared
3980     ;;
3981     sparc)
3982         check_64bit sparc sparc64 'sizeof(void *) > 4'
3983         spic=$shared
3984     ;;
3985     x86)
3986         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3987         # Treat x32 as x64 for now. Note it also needs spic=$shared
3988         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3989             subarch=x86_64
3990         if test "$subarch" = "x86_64"; then
3991             spic=$shared
3992         fi
3993     ;;
3994     ppc)
3995         check_cc <<EOF && subarch="ppc64"
3996         int test[(int)sizeof(char*) - 7];
3997 EOF
3998     ;;
3999 esac
4000
4001 enable $subarch
4002 enabled spic && enable_weak pic
4003
4004 # OS specific
4005 case $target_os in
4006     aix)
4007         SHFLAGS=-shared
4008         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4009         enabled shared && add_ldflags -Wl,-brtl
4010         ;;
4011     android)
4012         disable symver
4013         enable section_data_rel_ro
4014         SLIB_INSTALL_NAME='$(SLIBNAME)'
4015         SLIB_INSTALL_LINKS=
4016         # soname not set on purpose
4017         SHFLAGS=-shared
4018         ;;
4019     haiku)
4020         prefix_default="/boot/common"
4021         network_extralibs="-lnetwork"
4022         host_libs=
4023         ;;
4024     sunos)
4025         SHFLAGS='-shared -Wl,-h,$$(@F)'
4026         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4027         network_extralibs="-lsocket -lnsl"
4028         # When using suncc to build, the Solaris linker will mark
4029         # an executable with each instruction set encountered by
4030         # the Solaris assembler.  As our libraries contain their own
4031         # guards for processor-specific code, instead suppress
4032         # generation of the HWCAPS ELF section on Solaris x86 only.
4033         enabled_all suncc x86 &&
4034             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4035             add_ldflags -Wl,-M,mapfile
4036         nm_default='nm -P -g'
4037         ;;
4038     netbsd)
4039         disable symver
4040         oss_indev_extralibs="-lossaudio"
4041         oss_outdev_extralibs="-lossaudio"
4042         enabled gcc || check_ldflags -Wl,-zmuldefs
4043         ;;
4044     openbsd|bitrig)
4045         disable symver
4046         SHFLAGS='-shared'
4047         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4048         SLIB_INSTALL_LINKS=
4049         oss_indev_extralibs="-lossaudio"
4050         oss_outdev_extralibs="-lossaudio"
4051         ;;
4052     dragonfly)
4053         disable symver
4054         ;;
4055     freebsd)
4056         ;;
4057     bsd/os)
4058         add_extralibs -lpoll -lgnugetopt
4059         strip="strip -d"
4060         ;;
4061     darwin)
4062         enabled ppc && add_asflags -force_cpusubtype_ALL
4063         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4064         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4065         strip="${strip} -x"
4066         add_ldflags -Wl,-dynamic,-search_paths_first
4067         SLIBSUF=".dylib"
4068         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4069         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4070         objformat="macho"
4071         enabled x86_64 && objformat="macho64"
4072         enabled_any pic shared ||
4073             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4074         ;;
4075     mingw32*)
4076         if test $target_os = "mingw32ce"; then
4077             disable network
4078         else
4079             target_os=mingw32
4080         fi
4081         LIBTARGET=i386
4082         if enabled x86_64; then
4083             LIBTARGET="i386:x86-64"
4084         elif enabled arm; then
4085             LIBTARGET=arm-wince
4086         fi
4087         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4088         check_ldflags -Wl,--nxcompat
4089         check_ldflags -Wl,--dynamicbase
4090         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4091         shlibdir_default="$bindir_default"
4092         SLIBPREF=""
4093         SLIBSUF=".dll"
4094         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4095         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4096         dlltool="${cross_prefix}dlltool"
4097         if check_cmd lib.exe -list; then
4098             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4099             if enabled x86_64; then
4100                 LIBTARGET=x64
4101             fi
4102         elif check_cmd $dlltool --version; then
4103             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4104         fi
4105         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4106         SLIB_INSTALL_LINKS=
4107         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4108         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4109         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4110         objformat="win32"
4111         ranlib=:
4112         enable dos_paths
4113         ;;
4114     win32|win64)
4115         disable symver
4116         if enabled shared; then
4117             # Link to the import library instead of the normal static library
4118             # for shared libs.
4119             LD_LIB='%.lib'
4120             # Cannot build both shared and static libs with MSVC or icl.
4121             disable static
4122         fi
4123         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4124         shlibdir_default="$bindir_default"
4125         SLIBPREF=""
4126         SLIBSUF=".dll"
4127         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4128         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4129         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4130         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4131         SLIB_INSTALL_LINKS=
4132         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4133         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4134         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4135         objformat="win32"
4136         ranlib=:
4137         enable dos_paths
4138         ;;
4139     cygwin*)
4140         target_os=cygwin
4141         shlibdir_default="$bindir_default"
4142         SLIBPREF="cyg"
4143         SLIBSUF=".dll"
4144         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4145         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4146         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4147         SLIB_INSTALL_LINKS=
4148         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4149         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4150         objformat="win32"
4151         enable dos_paths
4152         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4153         ;;
4154     *-dos|freedos|opendos)
4155         network_extralibs="-lsocket"
4156         objformat="coff"
4157         enable dos_paths
4158         add_cppflags -U__STRICT_ANSI__
4159         ;;
4160     linux)
4161         enable dv1394
4162         enable section_data_rel_ro
4163         ;;
4164     irix*)
4165         target_os=irix
4166         ranlib="echo ignoring ranlib"
4167         ;;
4168     os/2*)
4169         strip="lxlite -CS"
4170         ln_s="cp -f"
4171         objformat="aout"
4172         add_cppflags -D_GNU_SOURCE
4173         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4174         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4175         LIBSUF="_s.a"
4176         SLIBPREF=""
4177         SLIBSUF=".dll"
4178         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4179         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4180         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4181             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4182             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4183             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4184             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4185             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4186         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4187             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4188         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4189         enable dos_paths
4190         enable_weak os2threads
4191         ;;
4192     gnu/kfreebsd)
4193         add_cppflags -D_BSD_SOURCE
4194         ;;
4195     gnu)
4196         ;;
4197     qnx)
4198         add_cppflags -D_QNX_SOURCE
4199         network_extralibs="-lsocket"
4200         ;;
4201     symbian)
4202         SLIBSUF=".dll"
4203         enable dos_paths
4204         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4205         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4206         add_ldflags -Wl,--target1-abs,--no-undefined \
4207                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4208                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4209         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4210                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4211                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4212         ;;
4213     osf1)
4214         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4215         ;;
4216     minix)
4217         ;;
4218     plan9)
4219         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4220                      -D_REENTRANT_SOURCE        \
4221                      -D_RESEARCH_SOURCE         \
4222                      -DFD_SETSIZE=96            \
4223                      -DHAVE_SOCK_OPTS
4224         add_compat strtod.o strtod=avpriv_strtod
4225         network_extralibs='-lbsd'
4226         exeobjs=compat/plan9/main.o
4227         disable ffserver
4228         cp_f='cp'
4229         ;;
4230     none)
4231         ;;
4232     *)
4233         die "Unknown OS '$target_os'."
4234         ;;
4235 esac
4236
4237 # determine libc flavour
4238
4239 probe_libc(){
4240     pfx=$1
4241     pfx_no_=${pfx%_}
4242     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4243     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4244         eval ${pfx}libc_type=uclibc
4245         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4246     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4247         eval ${pfx}libc_type=glibc
4248         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4249     # MinGW headers can be installed on Cygwin, so check for newlib first.
4250     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4251         eval ${pfx}libc_type=newlib
4252         add_${pfx}cppflags -U__STRICT_ANSI__
4253     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4254     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4255         eval ${pfx}libc_type=mingw64
4256         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4257             add_compat msvcrt/snprintf.o
4258             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4259         fi
4260         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4261         eval test \$${pfx_no_}cc_type = "gcc" &&
4262             add_${pfx}cppflags -D__printf__=__gnu_printf__
4263     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4264          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4265         eval ${pfx}libc_type=mingw32
4266         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4267             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4268             die "ERROR: MinGW32 runtime version must be >= 3.15."
4269         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4270         eval test \$${pfx_no_}cc_type = "gcc" &&
4271             add_${pfx}cppflags -D__printf__=__gnu_printf__
4272     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4273         eval ${pfx}libc_type=msvcrt
4274         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4275         # 0x601 by default unless something else is set by the user.
4276         # This can easily lead to us detecting functions only present
4277         # in such new versions and producing binaries requiring windows 7.0.
4278         # Therefore explicitly set the default to XP unless the user has
4279         # set something else on the command line.
4280         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4281             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4282     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4283         eval ${pfx}libc_type=klibc
4284     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4285         eval ${pfx}libc_type=bionic
4286     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4287         eval ${pfx}libc_type=solaris
4288         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4289     fi
4290     check_${pfx}cc <<EOF
4291 #include <time.h>
4292 void *v = localtime_r;
4293 EOF
4294 test "$?" != 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
4295 #include <time.h>
4296 void *v = localtime_r;
4297 EOF
4298
4299 }
4300
4301 probe_libc
4302 test -n "$libc_type" && enable libc_$libc_type
4303 probe_libc host_
4304 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4305
4306 case $libc_type in
4307     bionic)
4308         add_compat strtod.o strtod=avpriv_strtod
4309         ;;
4310     msvcrt)
4311         add_compat strtod.o strtod=avpriv_strtod
4312         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4313                                      _snprintf=avpriv_snprintf  \
4314                                      vsnprintf=avpriv_vsnprintf
4315         ;;
4316 esac
4317
4318 # hacks for compiler/libc/os combinations
4319
4320 if enabled_all tms470 libc_glibc; then
4321     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4322     add_cppflags -D__USER_LABEL_PREFIX__=
4323     add_cppflags -D__builtin_memset=memset
4324     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4325     add_cflags   -pds=48    # incompatible redefinition of macro
4326 fi
4327
4328 if enabled_all ccc libc_glibc; then
4329     add_ldflags -Wl,-z,now  # calls to libots crash without this
4330 fi
4331
4332 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4333     add_cppflags '-I\$(SRC_PATH)/compat/float'
4334
4335 esc(){
4336     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4337 }
4338
4339 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4340
4341 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4342
4343 set_default libdir
4344 : ${shlibdir_default:="$libdir"}
4345
4346 set_default $PATHS_LIST
4347 set_default nm
4348
4349 # we need to build at least one lib type
4350 if ! enabled_any static shared; then
4351     cat <<EOF
4352 At least one library type must be built.
4353 Specify --enable-static to build the static libraries or --enable-shared to
4354 build the shared libraries as well. To only build the shared libraries specify
4355 --disable-static in addition to --enable-shared.
4356 EOF
4357     exit 1;
4358 fi
4359
4360 die_license_disabled() {
4361     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4362 }
4363
4364 die_license_disabled_gpl() {
4365     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4366 }
4367
4368 die_license_disabled gpl frei0r
4369 die_license_disabled gpl libcdio
4370 die_license_disabled gpl libsmbclient
4371 die_license_disabled gpl libutvideo
4372 die_license_disabled gpl libvidstab
4373 die_license_disabled gpl libx264
4374 die_license_disabled gpl libx265
4375 die_license_disabled gpl libxavs
4376 die_license_disabled gpl libxvid
4377 die_license_disabled gpl libzvbi
4378 die_license_disabled gpl x11grab
4379
4380 die_license_disabled nonfree libaacplus
4381 die_license_disabled nonfree libfaac
4382 die_license_disabled nonfree nvenc
4383 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4384 enabled gpl && die_license_disabled_gpl nonfree openssl
4385
4386 die_license_disabled version3 libopencore_amrnb
4387 die_license_disabled version3 libopencore_amrwb
4388 die_license_disabled version3 libsmbclient
4389 die_license_disabled version3 libvo_aacenc
4390 die_license_disabled version3 libvo_amrwbenc
4391
4392 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4393
4394 disabled optimizations || check_cflags -fomit-frame-pointer
4395
4396 enable_weak_pic() {
4397     disabled pic && return
4398     enable pic
4399     add_cppflags -DPIC
4400     case "$target_os" in
4401     mingw*|cygwin*)
4402         ;;
4403     *)
4404         add_cflags -fPIC
4405         ;;
4406     esac
4407     add_asflags  -fPIC
4408 }
4409
4410 enabled pic && enable_weak_pic
4411
4412 check_cc <<EOF || die "Symbol mangling check failed."
4413 int ff_extern;
4414 EOF
4415 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4416 extern_prefix=${sym%%ff_extern*}
4417
4418 check_cc <<EOF && enable_weak inline_asm
4419 void foo(void) { __asm__ volatile ("" ::); }
4420 EOF
4421
4422 _restrict=
4423 for restrict_keyword in restrict __restrict__ __restrict; do
4424     check_cc <<EOF && _restrict=$restrict_keyword && break
4425 void foo(char * $restrict_keyword p);
4426 EOF
4427 done
4428
4429 check_cc <<EOF && enable pragma_deprecated
4430 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4431 EOF
4432
4433 check_cc <<EOF && enable attribute_packed
4434 struct { int x; } __attribute__((packed)) x;
4435 EOF
4436
4437 check_cc <<EOF && enable attribute_may_alias
4438 union { int x; } __attribute__((may_alias)) x;
4439 EOF
4440
4441 check_cc <<EOF || die "endian test failed"
4442 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4443 EOF
4444 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4445
4446 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4447     if ! enabled bigendian && enabled altivec ;then
4448         enable vsx
4449     fi
4450 fi
4451
4452 check_gas() {
4453     log "check_gas using '$as' as AS"
4454     # :vararg is used on aarch64, arm and ppc altivec
4455     check_as <<EOF || return 1
4456 .macro m n, y:vararg=0
4457 \n: .int \y
4458 .endm
4459 m x
4460 EOF
4461     # .altmacro is only used in arm asm
4462     ! enabled arm || check_as <<EOF || return 1
4463 .altmacro
4464 EOF
4465     enable gnu_as
4466     return 0
4467 }
4468
4469 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4470     nogas=:
4471     enabled_any arm aarch64 && nogas=die
4472     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4473     as_noop=-v
4474
4475     case $as_type in
4476         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4477         gcc)  gaspp_as_type=gas ;;
4478         *)    gaspp_as_type=$as_type ;;
4479     esac
4480
4481     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4482
4483     test "${as#*gas-preprocessor.pl}" != "$as" ||
4484     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4485         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4486
4487     if ! check_gas ; then
4488         as=${gas:=$as}
4489         check_gas || \
4490             $nogas "GNU assembler not found, install/update gas-preprocessor"
4491     fi
4492
4493     check_as <<EOF && enable as_func
4494 .func test
4495 .endfunc
4496 EOF
4497 fi
4498
4499 check_inline_asm inline_asm_labels '"1:\n"'
4500
4501 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4502
4503 if enabled aarch64; then
4504     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4505     # internal assembler in clang 3.3 does not support this instruction
4506     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4507     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4508
4509     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4510
4511 elif enabled alpha; then
4512
4513     check_cflags -mieee
4514
4515 elif enabled arm; then
4516
4517     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4518 float func(float a, float b){ return a+b; }
4519 EOF
4520
4521     enabled thumb && check_cflags -mthumb || check_cflags -marm
4522
4523     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4524         enable vfp_args
4525     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4526         case "${cross_prefix:-$cc}" in
4527             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4528             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4529 __asm__ (".eabi_attribute 28, 1");
4530 int main(void) { return 0; }
4531 EOF
4532         esac
4533         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4534     fi
4535
4536     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4537     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4538     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4539     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4540     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4541     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4542     enabled setend  && check_insn setend  'setend be'
4543
4544     [ $target_os = linux ] || [ $target_os = android ] ||
4545         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4546             $ARCH_EXT_LIST_ARM
4547
4548     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4549
4550     check_as <<EOF && enable as_dn_directive
4551 ra .dn d0.i16
4552 .unreq ra
4553 EOF
4554
4555     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4556
4557 elif enabled mips; then
4558
4559     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4560     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4561      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4562     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4563      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4564     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4565      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4566     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4567      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4568
4569 elif enabled parisc; then
4570
4571     if enabled gcc; then
4572         case $($cc -dumpversion) in
4573             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4574         esac
4575     fi
4576
4577 elif enabled ppc; then
4578
4579     enable local_aligned_8 local_aligned_16 local_aligned_32
4580
4581     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4582     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4583     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4584     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4585
4586     # AltiVec flags: The FSF version of GCC differs from the Apple version
4587     if enabled altivec; then
4588         check_cflags -maltivec -mabi=altivec &&
4589         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4590         check_cflags -faltivec
4591
4592         # check if our compiler supports Motorola AltiVec C API
4593         check_cc <<EOF || disable altivec
4594 $inc_altivec_h
4595 int main(void) {
4596     vector signed int v1 = (vector signed int) { 0 };
4597     vector signed int v2 = (vector signed int) { 1 };
4598     v1 = vec_add(v1, v2);
4599     return 0;
4600 }
4601 EOF
4602
4603         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4604     fi
4605
4606     if enabled vsx; then
4607         check_cflags -mvsx
4608     fi
4609 elif enabled x86; then
4610
4611     check_builtin rdtsc    intrin.h   "__rdtsc()"
4612     check_builtin mm_empty mmintrin.h "_mm_empty()"
4613
4614     enable local_aligned_8 local_aligned_16 local_aligned_32
4615
4616     # check whether EBP is available on x86
4617     # As 'i' is stored on the stack, this program will crash
4618     # if the base pointer is used to access it because the
4619     # base pointer is cleared in the inline assembly code.
4620     check_exec_crash <<EOF && enable ebp_available
4621 volatile int i=0;
4622 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4623 return i;
4624 EOF
4625
4626     # check whether EBX is available on x86
4627     check_inline_asm ebx_available '""::"b"(0)' &&
4628         check_inline_asm ebx_available '"":::"%ebx"'
4629
4630     # check whether xmm clobbers are supported
4631     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4632
4633     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4634         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4635
4636     # check whether binutils is new enough to compile SSSE3/MMXEXT
4637     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4638     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4639
4640     if ! disabled_any asm mmx yasm; then
4641         if check_cmd $yasmexe --version; then
4642             enabled x86_64 && yasm_extra="-m amd64"
4643             yasm_debug="-g dwarf2"
4644         elif check_cmd nasm -v; then
4645             yasmexe=nasm
4646             yasm_debug="-g -F dwarf"
4647             if enabled x86_64; then
4648                 case "$objformat" in
4649                     elf)   objformat=elf64 ;;
4650                     win32) objformat=win64 ;;
4651                 esac
4652             fi
4653         fi
4654
4655         YASMFLAGS="-f $objformat $yasm_extra"
4656         enabled pic               && append YASMFLAGS "-DPIC"
4657         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4658         case "$objformat" in
4659             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4660         esac
4661
4662         check_yasm "movbe ecx, [5]" && enable yasm ||
4663             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4664         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4665         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4666         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4667         check_yasm "CPU amdnop" || disable cpunop
4668     fi
4669
4670     case "$cpu" in
4671         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4672             disable fast_clz
4673         ;;
4674     esac
4675
4676 fi
4677
4678 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4679
4680 check_ldflags -Wl,--as-needed
4681 check_ldflags -Wl,-z,noexecstack
4682
4683 if check_func dlopen; then
4684     ldl=
4685 elif check_func dlopen -ldl; then
4686     ldl=-ldl
4687 fi
4688
4689 frei0r_filter_extralibs='$ldl'
4690 frei0r_src_filter_extralibs='$ldl'
4691 ladspa_filter_extralibs='$ldl'
4692 nvenc_encoder_extralibs='$ldl'
4693
4694 if ! disabled network; then
4695     check_func getaddrinfo $network_extralibs
4696     check_func getservbyport $network_extralibs
4697     check_func inet_aton $network_extralibs
4698
4699     check_type netdb.h "struct addrinfo"
4700     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4701     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4702     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4703     check_type poll.h "struct pollfd"
4704     check_type netinet/sctp.h "struct sctp_event_subscribe"
4705     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4706     check_type netinet/in.h "struct sockaddr_in6"
4707     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4708     check_type "sys/types.h sys/socket.h" socklen_t
4709
4710     # Prefer arpa/inet.h over winsock2
4711     if check_header arpa/inet.h ; then
4712         check_func closesocket
4713     elif check_header winsock2.h ; then
4714         check_func_headers winsock2.h closesocket -lws2 &&
4715             network_extralibs="-lws2" ||
4716         { check_func_headers winsock2.h closesocket -lws2_32 &&
4717             network_extralibs="-lws2_32"; } || disable winsock2_h network
4718         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4719
4720         check_type ws2tcpip.h socklen_t
4721         check_type ws2tcpip.h "struct addrinfo"
4722         check_type ws2tcpip.h "struct group_source_req"
4723         check_type ws2tcpip.h "struct ip_mreq_source"
4724         check_type ws2tcpip.h "struct ipv6_mreq"
4725         check_type winsock2.h "struct pollfd"
4726         check_struct winsock2.h "struct sockaddr" sa_len
4727         check_type ws2tcpip.h "struct sockaddr_in6"
4728         check_type ws2tcpip.h "struct sockaddr_storage"
4729     else
4730         disable network
4731     fi
4732 fi
4733
4734 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4735 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4736 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4737 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4738 check_builtin sarestart signal.h "SA_RESTART"
4739 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4740
4741 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4742 check_func  ${malloc_prefix}memalign            && enable memalign
4743 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4744
4745 check_func  access
4746 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4747 check_func  fcntl
4748 check_func  fork
4749 check_func  gethrtime
4750 check_func  getopt
4751 check_func  getrusage
4752 check_func  gettimeofday
4753 check_func  gmtime_r
4754 check_func  isatty
4755 check_func  localtime_r
4756 check_func  mach_absolute_time
4757 check_func  mkstemp
4758 check_func  mmap
4759 check_func  mprotect
4760 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4761 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4762 check_func  sched_getaffinity
4763 check_func  setrlimit
4764 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4765 check_func  strerror_r
4766 check_func  sysconf
4767 check_func  sysctl
4768 check_func  usleep
4769
4770 check_func_headers conio.h kbhit
4771 check_func_headers io.h setmode
4772 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4773 check_func_headers stdlib.h getenv
4774
4775 check_func_headers windows.h CoTaskMemFree -lole32
4776 check_func_headers windows.h GetProcessAffinityMask
4777 check_func_headers windows.h GetProcessTimes
4778 check_func_headers windows.h GetSystemTimeAsFileTime
4779 check_func_headers windows.h MapViewOfFile
4780 check_func_headers windows.h PeekNamedPipe
4781 check_func_headers windows.h SetConsoleTextAttribute
4782 check_func_headers windows.h Sleep
4783 check_func_headers windows.h VirtualAlloc
4784 check_struct windows.h "CONDITION_VARIABLE" Ptr
4785 check_func_headers glob.h glob
4786 enabled xlib &&
4787     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4788
4789 check_header direct.h
4790 check_header dlfcn.h
4791 check_header dxva.h
4792 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4793 check_header io.h
4794 check_header libcrystalhd/libcrystalhd_if.h
4795 check_header mach/mach_time.h
4796 check_header malloc.h
4797 check_header net/udplite.h
4798 check_header poll.h
4799 check_header sys/mman.h
4800 check_header sys/param.h
4801 check_header sys/resource.h
4802 check_header sys/select.h
4803 check_header sys/time.h
4804 check_header sys/un.h
4805 check_header termios.h
4806 check_header unistd.h
4807 check_header vdpau/vdpau.h
4808 check_header vdpau/vdpau_x11.h
4809 check_header VideoDecodeAcceleration/VDADecoder.h
4810 check_header windows.h
4811 check_header X11/extensions/XvMClib.h
4812 check_header asm/types.h
4813
4814 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4815 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4816 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4817
4818 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4819
4820 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4821
4822 if ! disabled w32threads && ! enabled pthreads; then
4823     check_func_headers "windows.h process.h" _beginthreadex &&
4824         enable w32threads || disable w32threads
4825 fi
4826
4827 # check for some common methods of building with pthread support
4828 # do this before the optional library checks as some of them require pthreads
4829 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4830     enable pthreads
4831     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4832         add_cflags -pthread
4833         add_extralibs -pthread
4834     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4835         add_cflags -pthreads
4836         add_extralibs -pthreads
4837     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4838         add_cflags -ldl -pthread
4839         add_extralibs -ldl -pthread
4840     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4841         add_extralibs -lpthreadGC2
4842     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4843         :
4844     elif ! check_func pthread_join && ! check_func pthread_create; then
4845         disable pthreads
4846     fi
4847     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4848 fi
4849
4850
4851 if enabled pthreads; then
4852   check_func pthread_cancel
4853 fi
4854
4855 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4856 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4857 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4858
4859 check_lib math.h sin -lm && LIBM="-lm"
4860 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4861
4862 atan2f_args=2
4863 ldexpf_args=2
4864 powf_args=2
4865
4866 for func in $MATH_FUNCS; do
4867     eval check_mathfunc $func \${${func}_args:-1}
4868 done
4869
4870 # these are off by default, so fail if requested and not available
4871 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4872 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4873                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4874                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4875 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4876 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4877 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4878 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4879 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4880 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4881 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4882 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4883 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4884 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4885                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4886                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4887 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4888 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4889 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4890 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"
4891 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4892 enabled fontconfig        && enable libfontconfig
4893 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4894 enabled libfreetype       && require_libfreetype
4895 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4896 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4897 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4898                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4899                                done || die "ERROR: libgsm not found"; }
4900 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4901 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4902 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4903 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4904 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4905 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4906 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4907 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4908 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
4909                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4910                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4911                                die "ERROR: libopenjpeg not found"; }
4912 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4913 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4914 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4915 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4916 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4917 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4918 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
4919                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
4920 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4921 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4922 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4923 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4924     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4925     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4926 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4927 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4928                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4929                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4930 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4931 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4932 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4933 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4934 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4935 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4936 enabled libvpx            && {
4937     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4938                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4939     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 ||
4940                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4941     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4942     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; } }
4943 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4944 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
4945 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
4946                                { require libx264 x264.h x264_encoder_encode -lx264 &&
4947                                  warn "using libx264 without pkg-config"; } } &&
4948                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4949                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4950 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4951                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4952                                die "ERROR: libx265 version must be >= 17."; }
4953 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4954 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4955 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4956 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4957 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
4958                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
4959 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4960                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4961                                die "ERROR: openal not found"; } &&
4962                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4963                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4964 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4965                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4966                                die "ERROR: opencl not found"; } &&
4967                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4968                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4969                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4970 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4971                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4972                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4973                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4974                                die "ERROR: opengl not found."
4975                              }
4976 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4977                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4978                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4979                                die "ERROR: openssl not found"; }
4980 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4981
4982 if enabled gnutls; then
4983     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4984     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4985 fi
4986
4987 # libdc1394 check
4988 if enabled libdc1394; then
4989     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4990         enable libdc1394_2; } ||
4991     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4992         enable libdc1394_1; } ||
4993     die "ERROR: No version of libdc1394 found "
4994 fi
4995 if ! disabled sdl; then
4996     SDL_CONFIG="${cross_prefix}sdl-config"
4997     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4998         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4999         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5000         enable sdl
5001     else
5002         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5003             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5004             sdl_libs=$("${SDL_CONFIG}" --libs)
5005             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5006             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5007             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5008             enable sdl
5009         elif enabled sdl ; then
5010             die "ERROR: SDL not found"
5011         else
5012             disable sdl
5013         fi
5014     fi
5015 fi
5016 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5017
5018 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5019 enabled makeinfo && (makeinfo --version | \
5020                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5021     && enable makeinfo_html || disable makeinfo_html
5022 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5023 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5024 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5025 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5026
5027 check_header linux/fb.h
5028 check_header linux/videodev.h
5029 check_header linux/videodev2.h
5030 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5031
5032 check_header sys/videoio.h
5033 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5034
5035 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5036 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5037 # w32api 3.12 had it defined wrong
5038 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5039
5040 check_type "dshow.h" IBaseFilter
5041
5042 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5043 { check_header dev/bktr/ioctl_meteor.h &&
5044   check_header dev/bktr/ioctl_bt848.h; } ||
5045 { check_header machine/ioctl_meteor.h &&
5046   check_header machine/ioctl_bt848.h; } ||
5047 { check_header dev/video/meteor/ioctl_meteor.h &&
5048   check_header dev/video/bktr/ioctl_bt848.h; } ||
5049 check_header dev/ic/bt8xx.h
5050
5051 check_header sndio.h
5052 if check_struct sys/soundcard.h audio_buf_info bytes; then
5053     enable_safe sys/soundcard.h
5054 else
5055     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5056     #include <sys/soundcard.h>
5057     audio_buf_info abc;
5058 EOF
5059 fi
5060 check_header soundcard.h
5061
5062 enabled_any alsa_indev alsa_outdev &&
5063     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5064
5065 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5066     check_func jack_port_get_latency_range -ljack
5067
5068 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5069
5070 if enabled libcdio; then
5071     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5072     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5073     die "ERROR: libcdio-paranoia not found"
5074 fi
5075
5076 enabled xlib &&
5077     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5078
5079 if ! disabled libxcb; then
5080     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5081         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5082     } && disable x11grab && enable libxcb
5083
5084 if enabled libxcb; then
5085     disabled libxcb_shm || {
5086         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5087             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5088         } && check_header sys/shm.h && enable libxcb_shm; }
5089
5090     disabled libxcb_xfixes || {
5091         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5092             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5093         } && enable libxcb_xfixes; }
5094
5095     disabled libxcb_shape || {
5096         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5097             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5098         } && enable libxcb_shape; }
5099
5100     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5101     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5102 fi
5103 fi
5104
5105 if enabled x11grab; then
5106     enabled xlib || die "ERROR: Xlib not found"
5107     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5108     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5109 fi
5110
5111 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5112
5113 enabled dxva2api_h &&
5114     check_cc <<EOF && enable dxva2api_cobj
5115 #define _WIN32_WINNT 0x0600
5116 #define COBJMACROS
5117 #include <windows.h>
5118 #include <d3d9.h>
5119 #include <dxva2api.h>
5120 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5121 EOF
5122
5123 enabled vaapi &&
5124     check_lib va/va.h vaInitialize -lva ||
5125     disable vaapi
5126
5127 enabled vdpau &&
5128     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5129     disable vdpau
5130
5131 enabled vdpau && enabled xlib &&
5132     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5133     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5134     enable vdpau_x11
5135
5136 # Funny iconv installations are not unusual, so check it after all flags have been set
5137 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5138
5139 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5140
5141 # add some useful compiler flags if supported
5142 check_cflags -Wdeclaration-after-statement
5143 check_cflags -Wall
5144 check_cflags -Wdisabled-optimization
5145 check_cflags -Wpointer-arith
5146 check_cflags -Wredundant-decls
5147 check_cflags -Wwrite-strings
5148 check_cflags -Wtype-limits
5149 check_cflags -Wundef
5150 check_cflags -Wmissing-prototypes
5151 check_cflags -Wno-pointer-to-int-cast
5152 check_cflags -Wstrict-prototypes
5153 check_cflags -Wempty-body
5154 enabled extra_warnings && check_cflags -Winline
5155
5156 check_disable_warning(){
5157     warning_flag=-W${1#-Wno-}
5158     test_cflags $warning_flag && add_cflags $1
5159 }
5160
5161 check_disable_warning -Wno-parentheses
5162 check_disable_warning -Wno-switch
5163 check_disable_warning -Wno-format-zero-length
5164 check_disable_warning -Wno-pointer-sign
5165
5166 # add some linker flags
5167 check_ldflags -Wl,--warn-common
5168 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5169 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5170 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5171
5172 # add some strip flags
5173 # -wN '..@*' is more selective than -x, but not available everywhere.
5174 check_stripflags -wN \'..@*\' || check_stripflags -x
5175
5176 enabled neon_clobber_test &&
5177     check_ldflags -Wl,--wrap,avcodec_open2              \
5178                   -Wl,--wrap,avcodec_decode_audio4      \
5179                   -Wl,--wrap,avcodec_decode_video2      \
5180                   -Wl,--wrap,avcodec_decode_subtitle2   \
5181                   -Wl,--wrap,avcodec_encode_audio2      \
5182                   -Wl,--wrap,avcodec_encode_video2      \
5183                   -Wl,--wrap,avcodec_encode_subtitle    \
5184                   -Wl,--wrap,swr_convert                \
5185                   -Wl,--wrap,avresample_convert ||
5186     disable neon_clobber_test
5187
5188 enabled xmm_clobber_test &&
5189     check_ldflags -Wl,--wrap,avcodec_open2              \
5190                   -Wl,--wrap,avcodec_decode_audio4      \
5191                   -Wl,--wrap,avcodec_decode_video2      \
5192                   -Wl,--wrap,avcodec_decode_subtitle2   \
5193                   -Wl,--wrap,avcodec_encode_audio2      \
5194                   -Wl,--wrap,avcodec_encode_video       \
5195                   -Wl,--wrap,avcodec_encode_video2      \
5196                   -Wl,--wrap,avcodec_encode_subtitle    \
5197                   -Wl,--wrap,swr_convert                \
5198                   -Wl,--wrap,avresample_convert         \
5199                   -Wl,--wrap,sws_scale ||
5200     disable xmm_clobber_test
5201
5202 echo "X{};" > $TMPV
5203 if test_ldflags -Wl,--version-script,$TMPV; then
5204     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5205     check_cc <<EOF && enable symver_asm_label
5206 void ff_foo(void) __asm__ ("av_foo@VERSION");
5207 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5208 EOF
5209     check_cc <<EOF && enable symver_gnu_asm
5210 __asm__(".symver ff_foo,av_foo@VERSION");
5211 void ff_foo(void) {}
5212 EOF
5213 fi
5214
5215 if [ -z "$optflags" ]; then
5216     if enabled small; then
5217         optflags=$cflags_size
5218     elif enabled optimizations; then
5219         optflags=$cflags_speed
5220     else
5221         optflags=$cflags_noopt
5222     fi
5223 fi
5224
5225 check_optflags(){
5226     check_cflags "$@"
5227     enabled lto && check_ldflags "$@"
5228 }
5229
5230
5231 if enabled lto; then
5232     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5233     check_cflags  -flto
5234     check_ldflags -flto $cpuflags
5235     disable inline_asm_direct_symbol_refs
5236 fi
5237
5238 check_optflags $optflags
5239 check_optflags -fno-math-errno
5240 check_optflags -fno-signed-zeros
5241
5242 enabled ftrapv && check_cflags -ftrapv
5243
5244 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5245 int x;
5246 EOF
5247
5248
5249 if enabled icc; then
5250     # Just warnings, no remarks
5251     check_cflags -w1
5252     # -wd: Disable following warnings
5253     # 144, 167, 556: -Wno-pointer-sign
5254     # 188: enumerated type mixed with another type
5255     # 1292: attribute "foo" ignored
5256     # 1419: external declaration in primary source file
5257     # 10006: ignoring unknown option -fno-signed-zeros
5258     # 10148: ignoring unknown option -Wno-parentheses
5259     # 10156: ignoring option '-W'; no argument required
5260     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5261     # 11030: Warning unknown option --as-needed
5262     # 10156: ignoring option '-export'; no argument required
5263     check_ldflags -wd10156,11030
5264     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5265     enable ebp_available
5266     # The test above does not test linking
5267     enabled lto && disable symver_asm_label
5268     if enabled x86_32; then
5269         icc_version=$($cc -dumpversion)
5270         test ${icc_version%%.*} -ge 11 &&
5271             check_cflags -falign-stack=maintain-16-byte ||
5272             disable aligned_stack
5273     fi
5274 elif enabled ccc; then
5275     # disable some annoying warnings
5276     add_cflags -msg_disable bitnotint
5277     add_cflags -msg_disable mixfuncvoid
5278     add_cflags -msg_disable nonstandcast
5279     add_cflags -msg_disable unsupieee
5280 elif enabled gcc; then
5281     check_optflags -fno-tree-vectorize
5282     check_cflags -Werror=format-security
5283     check_cflags -Werror=implicit-function-declaration
5284     check_cflags -Werror=missing-prototypes
5285     check_cflags -Werror=return-type
5286     check_cflags -Werror=vla
5287     check_cflags -Wformat
5288     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5289 elif enabled llvm_gcc; then
5290     check_cflags -mllvm -stack-alignment=16
5291 elif enabled clang; then
5292     check_cflags -mllvm -stack-alignment=16
5293     check_cflags -Qunused-arguments
5294     check_cflags -Werror=implicit-function-declaration
5295     check_cflags -Werror=missing-prototypes
5296     check_cflags -Werror=return-type
5297 elif enabled cparser; then
5298     add_cflags -Wno-missing-variable-declarations
5299     add_cflags -Wno-empty-statement
5300 elif enabled armcc; then
5301     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5302     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5303     # 2523: use of inline assembly is deprecated
5304     add_cflags -W${armcc_opt},--diag_suppress=2523
5305     add_cflags -W${armcc_opt},--diag_suppress=1207
5306     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5307     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5308     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5309     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5310 elif enabled tms470; then
5311     add_cflags -pds=824 -pds=837
5312     disable inline_asm
5313 elif enabled pathscale; then
5314     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5315 elif enabled_any msvc icl; then
5316     enabled x86_32 && disable aligned_stack
5317     enabled_all x86_32 debug && add_cflags -Oy-
5318     enabled debug && add_ldflags -debug
5319     enable pragma_deprecated
5320     if enabled icl; then
5321         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5322         # (correctly) on icl 13.x.
5323         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5324             add_cflags -Qansi-alias
5325         # Some inline asm is not compilable in debug
5326         if enabled debug; then
5327             disable ebp_available
5328             disable ebx_available
5329         fi
5330     fi
5331     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5332     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5333 fi
5334
5335 case $as_type in
5336     clang)
5337         add_asflags -Qunused-arguments
5338     ;;
5339 esac
5340
5341 case $ld_type in
5342     clang)
5343         check_ldflags -Qunused-arguments
5344     ;;
5345 esac
5346
5347 case $target_os in
5348     osf1)
5349         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5350     ;;
5351     plan9)
5352         add_cppflags -Dmain=plan9_main
5353     ;;
5354 esac
5355
5356 enable frame_thread_encoder
5357
5358 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5359
5360 check_deps $CONFIG_LIST       \
5361            $CONFIG_EXTRA      \
5362            $HAVE_LIST         \
5363            $ALL_COMPONENTS    \
5364
5365 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"
5366
5367
5368 if test $target_os = "haiku"; then
5369     disable memalign
5370     disable posix_memalign
5371 fi
5372
5373 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5374     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5375     enable dxva2_lib
5376
5377 ! enabled_any memalign posix_memalign aligned_malloc &&
5378     enabled simd_align_16 && enable memalign_hack
5379
5380 # add_dep lib dep
5381 # -> enable ${lib}_deps_${dep}
5382 # -> add $dep to ${lib}_deps only once
5383 add_dep() {
5384     lib=$1
5385     dep=$2
5386     enabled "${lib}_deps_${dep}" && return 0
5387     enable  "${lib}_deps_${dep}"
5388     prepend "${lib}_deps" $dep
5389 }
5390
5391 # merge deps lib components
5392 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5393 merge_deps() {
5394     lib=$1
5395     shift
5396     for comp in $*; do
5397         enabled $comp || continue
5398         eval "dep=\"\$${comp}_deps\""
5399         for d in $dep; do
5400             add_dep $lib $d
5401         done
5402     done
5403 }
5404
5405 merge_deps libavfilter $FILTER_LIST
5406
5407 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5408
5409 for thread in $THREADS_LIST; do
5410     if enabled $thread; then
5411         test -n "$thread_type" &&
5412             die "ERROR: Only one thread type must be selected." ||
5413             thread_type="$thread"
5414     fi
5415 done
5416
5417 enabled zlib && add_cppflags -DZLIB_CONST
5418
5419 # conditional library dependencies, in linking order
5420 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5421 enabled aresample_filter    && prepend avfilter_deps "swresample"
5422 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5423 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5424 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5425 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5426 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5427 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5428 enabled pan_filter          && prepend avfilter_deps "swresample"
5429 enabled pp_filter           && prepend avfilter_deps "postproc"
5430 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5431 enabled resample_filter && prepend avfilter_deps "avresample"
5432 enabled sab_filter          && prepend avfilter_deps "swscale"
5433 enabled scale_filter    && prepend avfilter_deps "swscale"
5434 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5435 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5436 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5437 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5438
5439 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5440
5441 enabled opus_decoder    && prepend avcodec_deps "swresample"
5442
5443 expand_deps(){
5444     lib_deps=${1}_deps
5445     eval "deps=\$$lib_deps"
5446     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5447     unique $lib_deps
5448 }
5449
5450 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5451 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5452
5453 map 'expand_deps $v' $LIBRARY_LIST
5454
5455 echo "install prefix            $prefix"
5456 echo "source path               $source_path"
5457 echo "C compiler                $cc"
5458 echo "C library                 $libc_type"
5459 if test "$host_cc" != "$cc"; then
5460     echo "host C compiler           $host_cc"
5461     echo "host C library            $host_libc_type"
5462 fi
5463 echo "ARCH                      $arch ($cpu)"
5464 if test "$build_suffix" != ""; then
5465     echo "build suffix              $build_suffix"
5466 fi
5467 if test "$progs_suffix" != ""; then
5468     echo "progs suffix              $progs_suffix"
5469 fi
5470 if test "$extra_version" != ""; then
5471     echo "version string suffix     $extra_version"
5472 fi
5473 echo "big-endian                ${bigendian-no}"
5474 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5475 if enabled x86; then
5476     echo "${yasmexe}                      ${yasm-no}"
5477     echo "MMX enabled               ${mmx-no}"
5478     echo "MMXEXT enabled            ${mmxext-no}"
5479     echo "3DNow! enabled            ${amd3dnow-no}"
5480     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5481     echo "SSE enabled               ${sse-no}"
5482     echo "SSSE3 enabled             ${ssse3-no}"
5483     echo "AVX enabled               ${avx-no}"
5484     echo "XOP enabled               ${xop-no}"
5485     echo "FMA3 enabled              ${fma3-no}"
5486     echo "FMA4 enabled              ${fma4-no}"
5487     echo "i686 features enabled     ${i686-no}"
5488     echo "CMOV is fast              ${fast_cmov-no}"
5489     echo "EBX available             ${ebx_available-no}"
5490     echo "EBP available             ${ebp_available-no}"
5491 fi
5492 if enabled aarch64; then
5493     echo "NEON enabled              ${neon-no}"
5494     echo "VFP enabled               ${vfp-no}"
5495 fi
5496 if enabled arm; then
5497     echo "ARMv5TE enabled           ${armv5te-no}"
5498     echo "ARMv6 enabled             ${armv6-no}"
5499     echo "ARMv6T2 enabled           ${armv6t2-no}"
5500     echo "VFP enabled               ${vfp-no}"
5501     echo "NEON enabled              ${neon-no}"
5502     echo "THUMB enabled             ${thumb-no}"
5503 fi
5504 if enabled mips; then
5505     echo "MIPS FPU enabled          ${mipsfpu-no}"
5506     echo "MIPS32R2 enabled          ${mips32r2-no}"
5507     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5508     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5509 fi
5510 if enabled ppc; then
5511     echo "AltiVec enabled           ${altivec-no}"
5512     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5513     echo "PPC VSX optimizations     ${vsx-no}"
5514     echo "dcbzl available           ${dcbzl-no}"
5515 fi
5516 echo "debug symbols             ${debug-no}"
5517 echo "strip symbols             ${stripping-no}"
5518 echo "optimize for size         ${small-no}"
5519 echo "optimizations             ${optimizations-no}"
5520 echo "static                    ${static-no}"
5521 echo "shared                    ${shared-no}"
5522 echo "postprocessing support    ${postproc-no}"
5523 echo "new filter support        ${avfilter-no}"
5524 echo "network support           ${network-no}"
5525 echo "threading support         ${thread_type-no}"
5526 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5527 echo "SDL support               ${sdl-no}"
5528 echo "opencl enabled            ${opencl-no}"
5529 echo "texi2html enabled         ${texi2html-no}"
5530 echo "perl enabled              ${perl-no}"
5531 echo "pod2man enabled           ${pod2man-no}"
5532 echo "makeinfo enabled          ${makeinfo-no}"
5533 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5534 test -n "$random_seed" &&
5535     echo "random seed               ${random_seed}"
5536 echo
5537
5538 echo "External libraries:"
5539 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5540 echo
5541
5542 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5543     echo "Enabled ${type}s:"
5544     eval list=\$$(toupper $type)_LIST
5545     print_enabled '_*' $list | print_3_columns
5546     echo
5547 done
5548
5549 license="LGPL version 2.1 or later"
5550 if enabled nonfree; then
5551     license="nonfree and unredistributable"
5552 elif enabled gplv3; then
5553     license="GPL version 3 or later"
5554 elif enabled lgplv3; then
5555     license="LGPL version 3 or later"
5556 elif enabled gpl; then
5557     license="GPL version 2 or later"
5558 fi
5559
5560 echo "License: $license"
5561
5562 echo "Creating config.mak, config.h, and doc/config.texi..."
5563
5564 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5565
5566 enabled stripping || strip="echo skipping strip"
5567
5568 config_files="$TMPH config.mak doc/config.texi"
5569
5570 cat > config.mak <<EOF
5571 # Automatically generated by configure - do not modify!
5572 ifndef FFMPEG_CONFIG_MAK
5573 FFMPEG_CONFIG_MAK=1
5574 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5575 prefix=$prefix
5576 LIBDIR=\$(DESTDIR)$libdir
5577 SHLIBDIR=\$(DESTDIR)$shlibdir
5578 INCDIR=\$(DESTDIR)$incdir
5579 BINDIR=\$(DESTDIR)$bindir
5580 DATADIR=\$(DESTDIR)$datadir
5581 DOCDIR=\$(DESTDIR)$docdir
5582 MANDIR=\$(DESTDIR)$mandir
5583 SRC_PATH=$source_path
5584 ifndef MAIN_MAKEFILE
5585 SRC_PATH:=\$(SRC_PATH:.%=..%)
5586 endif
5587 CC_IDENT=$cc_ident
5588 ARCH=$arch
5589 INTRINSICS=$intrinsics
5590 CC=$cc
5591 CXX=$cxx
5592 AS=$as
5593 LD=$ld
5594 DEPCC=$dep_cc
5595 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5596 DEPAS=$as
5597 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5598 YASM=$yasmexe
5599 DEPYASM=$yasmexe
5600 AR=$ar
5601 ARFLAGS=$arflags
5602 AR_O=$ar_o
5603 RANLIB=$ranlib
5604 STRIP=$strip
5605 CP=cp -p
5606 LN_S=$ln_s
5607 CPPFLAGS=$CPPFLAGS
5608 CFLAGS=$CFLAGS
5609 CXXFLAGS=$CXXFLAGS
5610 ASFLAGS=$ASFLAGS
5611 AS_C=$AS_C
5612 AS_O=$AS_O
5613 CC_C=$CC_C
5614 CC_E=$CC_E
5615 CC_O=$CC_O
5616 CXX_C=$CXX_C
5617 CXX_O=$CXX_O
5618 LD_O=$LD_O
5619 LD_LIB=$LD_LIB
5620 LD_PATH=$LD_PATH
5621 DLLTOOL=$dlltool
5622 WINDRES=$windres
5623 DEPWINDRES=$dep_cc
5624 DOXYGEN=$doxygen
5625 LDFLAGS=$LDFLAGS
5626 LDEXEFLAGS=$LDEXEFLAGS
5627 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5628 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5629 YASMFLAGS=$YASMFLAGS
5630 BUILDSUF=$build_suffix
5631 PROGSSUF=$progs_suffix
5632 FULLNAME=$FULLNAME
5633 LIBPREF=$LIBPREF
5634 LIBSUF=$LIBSUF
5635 LIBNAME=$LIBNAME
5636 SLIBPREF=$SLIBPREF
5637 SLIBSUF=$SLIBSUF
5638 EXESUF=$EXESUF
5639 EXTRA_VERSION=$extra_version
5640 CCDEP=$CCDEP
5641 CXXDEP=$CXXDEP
5642 CCDEP_FLAGS=$CCDEP_FLAGS
5643 ASDEP=$ASDEP
5644 ASDEP_FLAGS=$ASDEP_FLAGS
5645 CC_DEPFLAGS=$CC_DEPFLAGS
5646 AS_DEPFLAGS=$AS_DEPFLAGS
5647 HOSTCC=$host_cc
5648 HOSTLD=$host_ld
5649 HOSTCFLAGS=$host_cflags
5650 HOSTCPPFLAGS=$host_cppflags
5651 HOSTEXESUF=$HOSTEXESUF
5652 HOSTLDFLAGS=$host_ldflags
5653 HOSTLIBS=$host_libs
5654 DEPHOSTCC=$host_cc
5655 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5656 HOSTCCDEP=$HOSTCCDEP
5657 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5658 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5659 HOSTCC_C=$HOSTCC_C
5660 HOSTCC_O=$HOSTCC_O
5661 HOSTLD_O=$HOSTLD_O
5662 TARGET_EXEC=$target_exec $target_exec_args
5663 TARGET_PATH=$target_path
5664 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5665 CFLAGS-ffplay=$sdl_cflags
5666 ZLIB=$($ldflags_filter -lz)
5667 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5668 EXTRALIBS=$extralibs
5669 COMPAT_OBJS=$compat_objs
5670 EXEOBJS=$exeobjs
5671 INSTALL=$install
5672 LIBTARGET=${LIBTARGET}
5673 SLIBNAME=${SLIBNAME}
5674 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5675 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5676 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5677 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5678 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5679 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5680 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5681 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5682 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5683 NOREDZONE_FLAGS=$noredzone_flags
5684 EOF
5685
5686 get_version(){
5687     lcname=lib${1}
5688     name=$(toupper $lcname)
5689     file=$source_path/$lcname/version.h
5690     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5691     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5692     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5693     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5694     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5695     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5696 }
5697
5698 map 'get_version $v' $LIBRARY_LIST
5699
5700 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5701
5702 print_program_libs(){
5703     eval "program_libs=\$${1}_libs"
5704     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5705 }
5706
5707 map 'print_program_libs $v' $PROGRAM_LIST
5708
5709 cat > $TMPH <<EOF
5710 /* Automatically generated by configure - do not modify! */
5711 #ifndef FFMPEG_CONFIG_H
5712 #define FFMPEG_CONFIG_H
5713 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5714 #define FFMPEG_LICENSE "$(c_escape $license)"
5715 #define CONFIG_THIS_YEAR 2015
5716 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5717 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5718 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5719 #define av_restrict $_restrict
5720 #define EXTERN_PREFIX "${extern_prefix}"
5721 #define EXTERN_ASM ${extern_prefix}
5722 #define BUILDSUF "$build_suffix"
5723 #define SLIBSUF "$SLIBSUF"
5724 #define HAVE_MMX2 HAVE_MMXEXT
5725 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5726 EOF
5727
5728 test -n "$assert_level" &&
5729     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5730
5731 test -n "$malloc_prefix" &&
5732     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5733
5734 if enabled yasm; then
5735     append config_files $TMPASM
5736     printf '' >$TMPASM
5737 fi
5738
5739 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5740
5741
5742 mkdir -p doc
5743 mkdir -p tests
5744 echo "@c auto-generated by configure" > doc/config.texi
5745
5746 print_config ARCH_   "$config_files" $ARCH_LIST
5747 print_config HAVE_   "$config_files" $HAVE_LIST
5748 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5749                                      $CONFIG_EXTRA      \
5750                                      $ALL_COMPONENTS    \
5751
5752 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5753 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5754
5755 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5756 cp_if_changed $TMPH config.h
5757 touch .config
5758
5759 enabled yasm && cp_if_changed $TMPASM config.asm
5760
5761 cat > $TMPH <<EOF
5762 /* Generated by ffconf */
5763 #ifndef AVUTIL_AVCONFIG_H
5764 #define AVUTIL_AVCONFIG_H
5765 EOF
5766
5767 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5768
5769 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5770
5771 cp_if_changed $TMPH libavutil/avconfig.h
5772
5773 if test -n "$WARNINGS"; then
5774     printf "\n$WARNINGS"
5775     enabled fatal_warnings && exit 1
5776 fi
5777
5778 # build pkg-config files
5779
5780 lib_version(){
5781     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5782 }
5783
5784 pkgconfig_generate(){
5785     name=$1
5786     shortname=${name#lib}${build_suffix}
5787     comment=$2
5788     version=$3
5789     libs=$4
5790     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5791     requires=${requires%, }
5792     enabled ${name#lib} || return 0
5793     mkdir -p $name
5794     cat <<EOF > $name/$name${build_suffix}.pc
5795 prefix=$prefix
5796 exec_prefix=\${prefix}
5797 libdir=$libdir
5798 includedir=$incdir
5799
5800 Name: $name
5801 Description: $comment
5802 Version: $version
5803 Requires: $(enabled shared || echo $requires)
5804 Requires.private: $(enabled shared && echo $requires)
5805 Conflicts:
5806 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5807 Libs.private: $(enabled shared && echo $libs)
5808 Cflags: -I\${includedir}
5809 EOF
5810
5811 mkdir -p doc/examples/pc-uninstalled
5812 includedir=${source_path}
5813 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5814     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5815 prefix=
5816 exec_prefix=
5817 libdir=\${pcfiledir}/../../../$name
5818 includedir=${includedir}
5819
5820 Name: $name
5821 Description: $comment
5822 Version: $version
5823 Requires: $requires
5824 Conflicts:
5825 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5826 Cflags: -I\${includedir}
5827 EOF
5828 }
5829
5830 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5831 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5832 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5833 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5834 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5835 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5836 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5837 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5838 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"