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     intrax8
1872     lgplv3
1873     llauddsp
1874     llviddsp
1875     lpc
1876     me_cmp
1877     mpeg_er
1878     mpegaudio
1879     mpegaudiodsp
1880     mpegvideo
1881     mpegvideoenc
1882     nettle
1883     pixblockdsp
1884     qpeldsp
1885     rangecoder
1886     riffdec
1887     riffenc
1888     rtpdec
1889     rtpenc_chain
1890     sinewin
1891     startcode
1892     tpeldsp
1893     videodsp
1894     vp3dsp
1895     wma_freqs
1896 "
1897
1898 CMDLINE_SELECT="
1899     $ARCH_EXT_LIST
1900     $CONFIG_LIST
1901     $HAVE_LIST_CMDLINE
1902     $THREADS_LIST
1903     asm
1904     cross_compile
1905     debug
1906     extra_warnings
1907     logging
1908     lto
1909     optimizations
1910     rpath
1911     stripping
1912 "
1913
1914 PATHS_LIST="
1915     bindir
1916     datadir
1917     docdir
1918     incdir
1919     libdir
1920     mandir
1921     prefix
1922     shlibdir
1923 "
1924
1925 CMDLINE_SET="
1926     $PATHS_LIST
1927     ar
1928     arch
1929     as
1930     assert_level
1931     build_suffix
1932     cc
1933     cpu
1934     cross_prefix
1935     cxx
1936     dep_cc
1937     doxygen
1938     extra_version
1939     gas
1940     host_cc
1941     host_cflags
1942     host_ld
1943     host_ldflags
1944     host_libs
1945     host_os
1946     install
1947     ld
1948     logfile
1949     malloc_prefix
1950     nm
1951     optflags
1952     pkg_config
1953     pkg_config_flags
1954     progs_suffix
1955     random_seed
1956     ranlib
1957     samples
1958     strip
1959     sws_max_filter_size
1960     sysinclude
1961     sysroot
1962     target_exec
1963     target_os
1964     target_path
1965     target_samples
1966     tempprefix
1967     toolchain
1968     valgrind
1969     yasmexe
1970 "
1971
1972 CMDLINE_APPEND="
1973     extra_cflags
1974     extra_cxxflags
1975     host_cppflags
1976 "
1977
1978 # code dependency declarations
1979
1980 # architecture extensions
1981
1982 armv5te_deps="arm"
1983 armv6_deps="arm"
1984 armv6t2_deps="arm"
1985 armv8_deps="aarch64"
1986 neon_deps_any="aarch64 arm"
1987 intrinsics_neon_deps="neon"
1988 vfp_deps_any="aarch64 arm"
1989 vfpv3_deps="vfp"
1990 setend_deps="arm"
1991
1992 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1993
1994 mipsfpu_deps="mips"
1995 mips32r2_deps="mips"
1996 mipsdspr1_deps="mips"
1997 mipsdspr2_deps="mips"
1998
1999 altivec_deps="ppc"
2000 ppc4xx_deps="ppc"
2001 vsx_deps="ppc"
2002
2003 cpunop_deps="i686"
2004 x86_64_select="i686"
2005 x86_64_suggest="fast_cmov"
2006
2007 amd3dnow_deps="mmx"
2008 amd3dnowext_deps="amd3dnow"
2009 i686_deps="x86"
2010 mmx_deps="x86"
2011 mmxext_deps="mmx"
2012 sse_deps="mmxext"
2013 sse2_deps="sse"
2014 sse3_deps="sse2"
2015 ssse3_deps="sse3"
2016 sse4_deps="ssse3"
2017 sse42_deps="sse4"
2018 avx_deps="sse42"
2019 xop_deps="avx"
2020 fma3_deps="avx"
2021 fma4_deps="avx"
2022 avx2_deps="avx"
2023
2024 mmx_external_deps="yasm"
2025 mmx_inline_deps="inline_asm"
2026 mmx_suggest="mmx_external mmx_inline"
2027
2028 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2029     eval dep=\$${ext}_deps
2030     eval ${ext}_external_deps='"${dep}_external"'
2031     eval ${ext}_inline_deps='"${dep}_inline"'
2032     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2033 done
2034
2035 aligned_stack_if_any="aarch64 ppc x86"
2036 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2037 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2038 fast_unaligned_if_any="aarch64 ppc x86"
2039 simd_align_16_if_any="altivec neon sse"
2040
2041 # system capabilities
2042
2043 symver_if_any="symver_asm_label symver_gnu_asm"
2044
2045 # threading support
2046 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2047 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2048 atomics_win32_if="MemoryBarrier"
2049 atomics_native_if_any="$ATOMICS_LIST"
2050 w32threads_deps="atomics_native"
2051 threads_if_any="$THREADS_LIST"
2052
2053 # subsystems
2054 dct_select="rdft"
2055 error_resilience_select="me_cmp"
2056 faandct_deps="faan fdctdsp"
2057 faanidct_deps="faan idctdsp"
2058 frame_thread_encoder_deps="encoders threads"
2059 intrax8_select="error_resilience"
2060 mdct_select="fft"
2061 rdft_select="fft"
2062 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2063 mpeg_er_select="error_resilience"
2064 mpegaudio_select="mpegaudiodsp"
2065 mpegaudiodsp_select="dct"
2066 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2067 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2068
2069 # decoders / encoders
2070 aac_decoder_select="mdct sinewin"
2071 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2072 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2073 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2074 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2075 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2076 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2077 aic_decoder_select="golomb idctdsp"
2078 alac_encoder_select="lpc"
2079 als_decoder_select="bswapdsp"
2080 amrnb_decoder_select="lsp"
2081 amrwb_decoder_select="lsp"
2082 amv_decoder_select="sp5x_decoder exif"
2083 amv_encoder_select="aandcttables mpegvideoenc"
2084 ape_decoder_select="bswapdsp llauddsp"
2085 apng_decoder_select="zlib"
2086 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2087 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2088 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2089 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2090 atrac1_decoder_select="mdct sinewin"
2091 atrac3_decoder_select="mdct"
2092 atrac3p_decoder_select="mdct sinewin"
2093 avrn_decoder_select="exif"
2094 bink_decoder_select="blockdsp hpeldsp"
2095 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2096 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2097 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2098 cllc_decoder_select="bswapdsp"
2099 comfortnoise_encoder_select="lpc"
2100 cook_decoder_select="audiodsp mdct sinewin"
2101 cscd_decoder_select="lzo"
2102 cscd_decoder_suggest="zlib"
2103 dca_decoder_select="mdct"
2104 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2105 dnxhd_decoder_select="blockdsp idctdsp"
2106 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2107 dvvideo_decoder_select="dvprofile idctdsp"
2108 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2109 dxa_decoder_select="zlib"
2110 eac3_decoder_select="ac3_decoder"
2111 eac3_encoder_select="ac3_encoder"
2112 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2113 eatgq_decoder_select="aandcttables"
2114 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2115 exr_decoder_select="zlib"
2116 ffv1_decoder_select="golomb rangecoder"
2117 ffv1_encoder_select="rangecoder"
2118 ffvhuff_decoder_select="huffyuv_decoder"
2119 ffvhuff_encoder_select="huffyuv_encoder"
2120 fic_decoder_select="golomb"
2121 flac_decoder_select="golomb"
2122 flac_encoder_select="bswapdsp golomb lpc"
2123 flashsv_decoder_select="zlib"
2124 flashsv_encoder_select="zlib"
2125 flashsv2_encoder_select="zlib"
2126 flashsv2_decoder_select="zlib"
2127 flv_decoder_select="h263_decoder"
2128 flv_encoder_select="h263_encoder"
2129 fourxm_decoder_select="blockdsp bswapdsp"
2130 fraps_decoder_select="bswapdsp huffman"
2131 g2m_decoder_select="blockdsp idctdsp zlib"
2132 g729_decoder_select="audiodsp"
2133 h261_decoder_select="mpeg_er mpegvideo"
2134 h261_encoder_select="aandcttables mpegvideoenc"
2135 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2136 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2137 h263i_decoder_select="h263_decoder"
2138 h263p_encoder_select="h263_encoder"
2139 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2140 h264_decoder_suggest="error_resilience"
2141 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2142 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2143 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2144 iac_decoder_select="imc_decoder"
2145 imc_decoder_select="bswapdsp fft mdct sinewin"
2146 indeo3_decoder_select="hpeldsp"
2147 interplay_video_decoder_select="hpeldsp"
2148 jpegls_decoder_select="golomb mjpeg_decoder"
2149 jpegls_encoder_select="golomb"
2150 jv_decoder_select="blockdsp"
2151 lagarith_decoder_select="huffyuvdsp"
2152 ljpeg_encoder_select="aandcttables idctdsp"
2153 loco_decoder_select="golomb"
2154 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2155 metasound_decoder_select="lsp mdct sinewin"
2156 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2157 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2158 mjpeg_encoder_select="aandcttables mpegvideoenc"
2159 mjpegb_decoder_select="mjpeg_decoder"
2160 mlp_decoder_select="mlp_parser"
2161 motionpixels_decoder_select="bswapdsp"
2162 mp1_decoder_select="mpegaudio"
2163 mp1float_decoder_select="mpegaudio"
2164 mp2_decoder_select="mpegaudio"
2165 mp2float_decoder_select="mpegaudio"
2166 mp3_decoder_select="mpegaudio"
2167 mp3adu_decoder_select="mpegaudio"
2168 mp3adufloat_decoder_select="mpegaudio"
2169 mp3float_decoder_select="mpegaudio"
2170 mp3on4_decoder_select="mpegaudio"
2171 mp3on4float_decoder_select="mpegaudio"
2172 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2173 mpc8_decoder_select="mpegaudiodsp"
2174 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2175 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2176 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2177 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2178 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2179 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2180 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2181 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2182 mpeg4_encoder_select="h263_encoder"
2183 msmpeg4v1_decoder_select="h263_decoder"
2184 msmpeg4v2_decoder_select="h263_decoder"
2185 msmpeg4v2_encoder_select="h263_encoder"
2186 msmpeg4v3_decoder_select="h263_decoder"
2187 msmpeg4v3_encoder_select="h263_encoder"
2188 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2189 mxpeg_decoder_select="mjpeg_decoder"
2190 nellymoser_decoder_select="mdct sinewin"
2191 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2192 nuv_decoder_select="idctdsp lzo"
2193 on2avc_decoder_select="mdct"
2194 opus_decoder_deps="swresample"
2195 png_decoder_select="zlib"
2196 png_encoder_select="huffyuvencdsp zlib"
2197 prores_decoder_select="blockdsp idctdsp"
2198 prores_encoder_select="fdctdsp"
2199 qcelp_decoder_select="lsp"
2200 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2201 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2202 ra_144_decoder_select="audiodsp"
2203 ralf_decoder_select="golomb"
2204 rawvideo_decoder_select="bswapdsp"
2205 rtjpeg_decoder_select="me_cmp"
2206 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2207 rv10_encoder_select="h263_encoder"
2208 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2209 rv20_encoder_select="h263_encoder"
2210 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2211 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2212 shorten_decoder_select="golomb"
2213 sipr_decoder_select="lsp"
2214 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2215 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2216 sonic_decoder_select="golomb rangecoder"
2217 sonic_encoder_select="golomb rangecoder"
2218 sonic_ls_encoder_select="golomb rangecoder"
2219 sp5x_decoder_select="mjpeg_decoder"
2220 svq1_decoder_select="hpeldsp"
2221 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2222 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2223 svq3_decoder_suggest="zlib"
2224 tak_decoder_select="audiodsp"
2225 theora_decoder_select="vp3_decoder"
2226 thp_decoder_select="mjpeg_decoder"
2227 tiff_decoder_suggest="zlib lzma"
2228 tiff_encoder_suggest="zlib"
2229 truehd_decoder_select="mlp_parser"
2230 truemotion2_decoder_select="bswapdsp"
2231 truespeech_decoder_select="bswapdsp"
2232 tscc_decoder_select="zlib"
2233 twinvq_decoder_select="mdct lsp sinewin"
2234 utvideo_decoder_select="bswapdsp"
2235 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2236 vble_decoder_select="huffyuvdsp"
2237 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2238 vc1image_decoder_select="vc1_decoder"
2239 vorbis_decoder_select="mdct"
2240 vorbis_encoder_select="mdct"
2241 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2242 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2243 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2244 vp6a_decoder_select="vp6_decoder"
2245 vp6f_decoder_select="vp6_decoder"
2246 vp7_decoder_select="h264pred videodsp"
2247 vp8_decoder_select="h264pred videodsp"
2248 vp9_decoder_select="videodsp vp9_parser"
2249 webp_decoder_select="vp8_decoder"
2250 wmalossless_decoder_select="llauddsp"
2251 wmapro_decoder_select="mdct sinewin wma_freqs"
2252 wmav1_decoder_select="mdct sinewin wma_freqs"
2253 wmav1_encoder_select="mdct sinewin wma_freqs"
2254 wmav2_decoder_select="mdct sinewin wma_freqs"
2255 wmav2_encoder_select="mdct sinewin wma_freqs"
2256 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2257 wmv1_decoder_select="h263_decoder"
2258 wmv1_encoder_select="h263_encoder"
2259 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2260 wmv2_encoder_select="h263_encoder"
2261 wmv3_decoder_select="vc1_decoder"
2262 wmv3image_decoder_select="wmv3_decoder"
2263 zerocodec_decoder_select="zlib"
2264 zlib_decoder_select="zlib"
2265 zlib_encoder_select="zlib"
2266 zmbv_decoder_select="zlib"
2267 zmbv_encoder_select="zlib"
2268
2269 # hardware accelerators
2270 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2271 dxva2_deps="dxva2api_h"
2272 vaapi_deps="va_va_h"
2273 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2274 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2275 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2276 xvmc_deps="X11_extensions_XvMClib_h"
2277
2278 h263_vaapi_hwaccel_deps="vaapi"
2279 h263_vaapi_hwaccel_select="h263_decoder"
2280 h263_vdpau_hwaccel_deps="vdpau"
2281 h263_vdpau_hwaccel_select="h263_decoder"
2282 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2283 h264_dxva2_hwaccel_deps="dxva2"
2284 h264_dxva2_hwaccel_select="h264_decoder"
2285 h264_vaapi_hwaccel_deps="vaapi"
2286 h264_vaapi_hwaccel_select="h264_decoder"
2287 h264_vda_decoder_deps="vda"
2288 h264_vda_decoder_select="h264_decoder"
2289 h264_vda_hwaccel_deps="vda"
2290 h264_vda_hwaccel_select="h264_decoder"
2291 h264_vda_old_hwaccel_deps="vda"
2292 h264_vda_old_hwaccel_select="h264_decoder"
2293 h264_vdpau_decoder_deps="vdpau"
2294 h264_vdpau_decoder_select="h264_decoder"
2295 h264_vdpau_hwaccel_deps="vdpau"
2296 h264_vdpau_hwaccel_select="h264_decoder"
2297 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2298 hevc_dxva2_hwaccel_select="hevc_decoder"
2299 mpeg_vdpau_decoder_deps="vdpau"
2300 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2301 mpeg_xvmc_hwaccel_deps="xvmc"
2302 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2303 mpeg1_vdpau_decoder_deps="vdpau"
2304 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2305 mpeg1_vdpau_hwaccel_deps="vdpau"
2306 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2307 mpeg1_xvmc_hwaccel_deps="xvmc"
2308 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2309 mpeg2_crystalhd_decoder_select="crystalhd"
2310 mpeg2_dxva2_hwaccel_deps="dxva2"
2311 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2312 mpeg2_vaapi_hwaccel_deps="vaapi"
2313 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2314 mpeg2_vdpau_hwaccel_deps="vdpau"
2315 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2316 mpeg2_xvmc_hwaccel_deps="xvmc"
2317 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2318 mpeg4_crystalhd_decoder_select="crystalhd"
2319 mpeg4_vaapi_hwaccel_deps="vaapi"
2320 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2321 mpeg4_vdpau_decoder_deps="vdpau"
2322 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2323 mpeg4_vdpau_hwaccel_deps="vdpau"
2324 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2325 msmpeg4_crystalhd_decoder_select="crystalhd"
2326 vc1_crystalhd_decoder_select="crystalhd"
2327 vc1_dxva2_hwaccel_deps="dxva2"
2328 vc1_dxva2_hwaccel_select="vc1_decoder"
2329 vc1_vaapi_hwaccel_deps="vaapi"
2330 vc1_vaapi_hwaccel_select="vc1_decoder"
2331 vc1_vdpau_decoder_deps="vdpau"
2332 vc1_vdpau_decoder_select="vc1_decoder"
2333 vc1_vdpau_hwaccel_deps="vdpau"
2334 vc1_vdpau_hwaccel_select="vc1_decoder"
2335 wmv3_crystalhd_decoder_select="crystalhd"
2336 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2337 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2338 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2339 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2340
2341 # parsers
2342 h264_parser_select="h264_decoder"
2343 hevc_parser_select="hevc_decoder"
2344 mpegvideo_parser_select="mpegvideo"
2345 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2346 vc1_parser_select="mpegvideo startcode vc1_decoder"
2347
2348 # external libraries
2349 libaacplus_encoder_deps="libaacplus"
2350 libcelt_decoder_deps="libcelt"
2351 libfaac_encoder_deps="libfaac"
2352 libfaac_encoder_select="audio_frame_queue"
2353 libfdk_aac_decoder_deps="libfdk_aac"
2354 libfdk_aac_encoder_deps="libfdk_aac"
2355 libfdk_aac_encoder_select="audio_frame_queue"
2356 libgme_demuxer_deps="libgme"
2357 libgsm_decoder_deps="libgsm"
2358 libgsm_encoder_deps="libgsm"
2359 libgsm_ms_decoder_deps="libgsm"
2360 libgsm_ms_encoder_deps="libgsm"
2361 libilbc_decoder_deps="libilbc"
2362 libilbc_encoder_deps="libilbc"
2363 libmodplug_demuxer_deps="libmodplug"
2364 libmp3lame_encoder_deps="libmp3lame"
2365 libmp3lame_encoder_select="audio_frame_queue"
2366 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2367 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2368 libopencore_amrnb_encoder_select="audio_frame_queue"
2369 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2370 libopenh264_encoder_deps="libopenh264"
2371 libopenjpeg_decoder_deps="libopenjpeg"
2372 libopenjpeg_encoder_deps="libopenjpeg"
2373 libopus_decoder_deps="libopus"
2374 libopus_encoder_deps="libopus"
2375 libopus_encoder_select="audio_frame_queue"
2376 libquvi_demuxer_deps="libquvi"
2377 libschroedinger_decoder_deps="libschroedinger"
2378 libschroedinger_encoder_deps="libschroedinger"
2379 libshine_encoder_deps="libshine"
2380 libshine_encoder_select="audio_frame_queue"
2381 libspeex_decoder_deps="libspeex"
2382 libspeex_encoder_deps="libspeex"
2383 libspeex_encoder_select="audio_frame_queue"
2384 libstagefright_h264_decoder_deps="libstagefright_h264"
2385 libtheora_encoder_deps="libtheora"
2386 libtwolame_encoder_deps="libtwolame"
2387 libvo_aacenc_encoder_deps="libvo_aacenc"
2388 libvo_aacenc_encoder_select="audio_frame_queue"
2389 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2390 libvorbis_decoder_deps="libvorbis"
2391 libvorbis_encoder_deps="libvorbis"
2392 libvorbis_encoder_select="audio_frame_queue"
2393 libvpx_vp8_decoder_deps="libvpx"
2394 libvpx_vp8_encoder_deps="libvpx"
2395 libvpx_vp9_decoder_deps="libvpx"
2396 libvpx_vp9_encoder_deps="libvpx"
2397 libwavpack_encoder_deps="libwavpack"
2398 libwebp_encoder_deps="libwebp"
2399 libx264_encoder_deps="libx264"
2400 libx264rgb_encoder_deps="libx264"
2401 libx264rgb_encoder_select="libx264_encoder"
2402 libx265_encoder_deps="libx265"
2403 libxavs_encoder_deps="libxavs"
2404 libxvid_encoder_deps="libxvid"
2405 libutvideo_decoder_deps="libutvideo"
2406 libutvideo_encoder_deps="libutvideo"
2407 libzvbi_teletext_decoder_deps="libzvbi"
2408 nvenc_encoder_deps="nvenc"
2409
2410 # demuxers / muxers
2411 ac3_demuxer_select="ac3_parser"
2412 asf_demuxer_select="riffdec"
2413 asf_muxer_select="riffenc"
2414 asf_stream_muxer_select="asf_muxer"
2415 avi_demuxer_select="riffdec exif"
2416 avi_muxer_select="riffenc"
2417 avisynth_demuxer_deps="avisynth"
2418 avisynth_demuxer_select="riffdec"
2419 caf_demuxer_select="riffdec"
2420 dash_muxer_select="mp4_muxer"
2421 dirac_demuxer_select="dirac_parser"
2422 dts_demuxer_select="dca_parser"
2423 dtshd_demuxer_select="dca_parser"
2424 dv_demuxer_select="dvprofile"
2425 dv_muxer_select="dvprofile"
2426 dxa_demuxer_select="riffdec"
2427 eac3_demuxer_select="ac3_parser"
2428 f4v_muxer_select="mov_muxer"
2429 flac_demuxer_select="flac_parser"
2430 hds_muxer_select="flv_muxer"
2431 hls_muxer_select="mpegts_muxer"
2432 image2_alias_pix_demuxer_select="image2_demuxer"
2433 image2_brender_pix_demuxer_select="image2_demuxer"
2434 ipod_muxer_select="mov_muxer"
2435 ismv_muxer_select="mov_muxer"
2436 libnut_demuxer_deps="libnut"
2437 libnut_muxer_deps="libnut"
2438 matroska_audio_muxer_select="matroska_muxer"
2439 matroska_demuxer_select="riffdec"
2440 matroska_demuxer_suggest="bzlib lzo zlib"
2441 matroska_muxer_select="riffenc"
2442 mmf_muxer_select="riffenc"
2443 mov_demuxer_select="riffdec"
2444 mov_demuxer_suggest="zlib"
2445 mov_muxer_select="riffenc rtpenc_chain"
2446 mp3_demuxer_select="mpegaudio_parser"
2447 mp4_muxer_select="mov_muxer"
2448 mpegts_muxer_select="adts_muxer latm_muxer"
2449 mpegtsraw_demuxer_select="mpegts_demuxer"
2450 mxf_d10_muxer_select="mxf_muxer"
2451 nut_muxer_select="riffenc"
2452 nuv_demuxer_select="riffdec"
2453 oga_muxer_select="ogg_muxer"
2454 ogg_demuxer_select="golomb"
2455 opus_muxer_select="ogg_muxer"
2456 psp_muxer_select="mov_muxer"
2457 rtp_demuxer_select="sdp_demuxer"
2458 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2459 rtsp_demuxer_select="http_protocol rtpdec"
2460 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2461 sap_demuxer_select="sdp_demuxer"
2462 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2463 sdp_demuxer_select="rtpdec"
2464 smoothstreaming_muxer_select="ismv_muxer"
2465 spdif_muxer_select="aac_parser"
2466 spx_muxer_select="ogg_muxer"
2467 tak_demuxer_select="tak_parser"
2468 tg2_muxer_select="mov_muxer"
2469 tgp_muxer_select="mov_muxer"
2470 vobsub_demuxer_select="mpegps_demuxer"
2471 w64_demuxer_select="wav_demuxer"
2472 w64_muxer_select="wav_muxer"
2473 wav_demuxer_select="riffdec"
2474 wav_muxer_select="riffenc"
2475 webm_muxer_select="riffenc"
2476 wtv_demuxer_select="riffdec"
2477 wtv_muxer_select="riffenc"
2478 xmv_demuxer_select="riffdec"
2479 xwma_demuxer_select="riffdec"
2480
2481 # indevs / outdevs
2482 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2483 alsa_outdev_deps="alsa_asoundlib_h"
2484 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2485 avfoundation_indev_select="avfoundation"
2486 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2487 caca_outdev_deps="libcaca"
2488 decklink_outdev_deps="decklink pthreads"
2489 decklink_outdev_extralibs="-lstdc++"
2490 decklink_indev_deps="decklink pthreads"
2491 decklink_indev_extralibs="-lstdc++"
2492 dshow_indev_deps="IBaseFilter"
2493 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2494 dv1394_indev_deps="dv1394"
2495 dv1394_indev_select="dv_demuxer"
2496 fbdev_indev_deps="linux_fb_h"
2497 fbdev_outdev_deps="linux_fb_h"
2498 gdigrab_indev_deps="CreateDIBSection"
2499 gdigrab_indev_extralibs="-lgdi32"
2500 gdigrab_indev_select="bmp_decoder"
2501 iec61883_indev_deps="libiec61883"
2502 jack_indev_deps="jack_jack_h sem_timedwait"
2503 lavfi_indev_deps="avfilter"
2504 libcdio_indev_deps="libcdio"
2505 libdc1394_indev_deps="libdc1394"
2506 libv4l2_indev_deps="libv4l2"
2507 openal_indev_deps="openal"
2508 opengl_outdev_deps="opengl"
2509 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2510 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2511 pulse_indev_deps="libpulse"
2512 pulse_outdev_deps="libpulse"
2513 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2514 qtkit_indev_select="qtkit"
2515 sdl_outdev_deps="sdl"
2516 sndio_indev_deps="sndio_h"
2517 sndio_outdev_deps="sndio_h"
2518 v4l_indev_deps="linux_videodev_h"
2519 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2520 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2521 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2522 vfwcap_indev_extralibs="-lavicap32"
2523 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2524 xv_outdev_extralibs="-lXv -lX11 -lXext"
2525 x11grab_indev_deps="x11grab"
2526 x11grab_xcb_indev_deps="libxcb"
2527
2528 # protocols
2529 bluray_protocol_deps="libbluray"
2530 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2531 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2532 ffrtmpcrypt_protocol_select="tcp_protocol"
2533 ffrtmphttp_protocol_deps="!librtmp_protocol"
2534 ffrtmphttp_protocol_select="http_protocol"
2535 ftp_protocol_select="tcp_protocol"
2536 gopher_protocol_select="network"
2537 http_protocol_select="tcp_protocol"
2538 httpproxy_protocol_select="tcp_protocol"
2539 https_protocol_select="tls_protocol"
2540 icecast_protocol_select="http_protocol"
2541 librtmp_protocol_deps="librtmp"
2542 librtmpe_protocol_deps="librtmp"
2543 librtmps_protocol_deps="librtmp"
2544 librtmpt_protocol_deps="librtmp"
2545 librtmpte_protocol_deps="librtmp"
2546 libsmbclient_protocol_deps="libsmbclient gplv3"
2547 libssh_protocol_deps="libssh"
2548 mmsh_protocol_select="http_protocol"
2549 mmst_protocol_select="network"
2550 rtmp_protocol_deps="!librtmp_protocol"
2551 rtmp_protocol_select="tcp_protocol"
2552 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2553 rtmps_protocol_deps="!librtmp_protocol"
2554 rtmps_protocol_select="tls_protocol"
2555 rtmpt_protocol_select="ffrtmphttp_protocol"
2556 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2557 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2558 rtp_protocol_select="udp_protocol"
2559 sctp_protocol_deps="struct_sctp_event_subscribe"
2560 sctp_protocol_select="network"
2561 srtp_protocol_select="rtp_protocol"
2562 tcp_protocol_select="network"
2563 tls_protocol_deps_any="openssl gnutls"
2564 tls_protocol_select="tcp_protocol"
2565 udp_protocol_select="network"
2566 udplite_protocol_select="network"
2567 unix_protocol_deps="sys_un_h"
2568 unix_protocol_select="network"
2569
2570 # filters
2571 amovie_filter_deps="avcodec avformat"
2572 aresample_filter_deps="swresample"
2573 ass_filter_deps="libass"
2574 asyncts_filter_deps="avresample"
2575 atempo_filter_deps="avcodec"
2576 atempo_filter_select="rdft"
2577 azmq_filter_deps="libzmq"
2578 blackframe_filter_deps="gpl"
2579 boxblur_filter_deps="gpl"
2580 bs2b_filter_deps="libbs2b"
2581 colormatrix_filter_deps="gpl"
2582 cropdetect_filter_deps="gpl"
2583 delogo_filter_deps="gpl"
2584 deshake_filter_select="pixelutils"
2585 drawtext_filter_deps="libfreetype"
2586 ebur128_filter_deps="gpl"
2587 eq_filter_deps="gpl"
2588 flite_filter_deps="libflite"
2589 frei0r_filter_deps="frei0r dlopen"
2590 frei0r_src_filter_deps="frei0r dlopen"
2591 fspp_filter_deps="gpl"
2592 geq_filter_deps="gpl"
2593 histeq_filter_deps="gpl"
2594 hqdn3d_filter_deps="gpl"
2595 interlace_filter_deps="gpl"
2596 kerndeint_filter_deps="gpl"
2597 ladspa_filter_deps="ladspa dlopen"
2598 mcdeint_filter_deps="avcodec gpl"
2599 movie_filter_deps="avcodec avformat"
2600 mp_filter_deps="gpl avcodec swscale"
2601 mpdecimate_filter_deps="gpl"
2602 mpdecimate_filter_select="pixelutils"
2603 mptestsrc_filter_deps="gpl"
2604 negate_filter_deps="lut_filter"
2605 perspective_filter_deps="gpl"
2606 pp7_filter_deps="gpl"
2607 ocv_filter_deps="libopencv"
2608 owdenoise_filter_deps="gpl"
2609 pan_filter_deps="swresample"
2610 phase_filter_deps="gpl"
2611 pp_filter_deps="gpl postproc"
2612 pullup_filter_deps="gpl"
2613 removelogo_filter_deps="avcodec avformat swscale"
2614 resample_filter_deps="avresample"
2615 sab_filter_deps="gpl swscale"
2616 scale_filter_deps="swscale"
2617 select_filter_select="pixelutils"
2618 smartblur_filter_deps="gpl swscale"
2619 showspectrum_filter_deps="avcodec"
2620 showspectrum_filter_select="rdft"
2621 spp_filter_deps="gpl avcodec"
2622 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2623 stereo3d_filter_deps="gpl"
2624 subtitles_filter_deps="avformat avcodec libass"
2625 super2xsai_filter_deps="gpl"
2626 tinterlace_filter_deps="gpl"
2627 vidstabdetect_filter_deps="libvidstab"
2628 vidstabtransform_filter_deps="libvidstab"
2629 pixfmts_super2xsai_test_deps="super2xsai_filter"
2630 tinterlace_merge_test_deps="tinterlace_filter"
2631 tinterlace_pad_test_deps="tinterlace_filter"
2632 uspp_filter_deps="gpl avcodec"
2633 zmq_filter_deps="libzmq"
2634 zoompan_filter_deps="swscale"
2635
2636 # examples
2637 avio_reading="avformat avcodec avutil"
2638 avcodec_example_deps="avcodec avutil"
2639 decoding_encoding_example_deps="avcodec avformat avutil"
2640 demuxing_decoding_example_deps="avcodec avformat avutil"
2641 extract_mvs_example_deps="avcodec avformat avutil"
2642 filter_audio_example_deps="avfilter avutil"
2643 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2644 filtering_video_example_deps="avfilter avcodec avformat avutil"
2645 metadata_example_deps="avformat avutil"
2646 muxing_example_deps="avcodec avformat avutil swscale"
2647 remuxing_example_deps="avcodec avformat avutil"
2648 resampling_audio_example_deps="avutil swresample"
2649 scaling_video_example_deps="avutil swscale"
2650 transcode_aac_example_deps="avcodec avformat swresample"
2651 transcoding_example_deps="avfilter avcodec avformat avutil"
2652
2653 # libraries, in linking order
2654 avcodec_deps="avutil"
2655 avdevice_deps="avformat avcodec avutil"
2656 avfilter_deps="avutil"
2657 avformat_deps="avcodec avutil"
2658 avresample_deps="avutil"
2659 postproc_deps="avutil gpl"
2660 swresample_deps="avutil"
2661 swscale_deps="avutil"
2662
2663 # programs
2664 ffmpeg_deps="avcodec avfilter avformat swresample"
2665 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2666                null_filter
2667                setpts_filter trim_filter"
2668 ffplay_deps="avcodec avformat swscale swresample sdl"
2669 ffplay_libs='$sdl_libs'
2670 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2671 ffprobe_deps="avcodec avformat"
2672 ffserver_deps="avformat fork sarestart"
2673 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2674
2675 # documentation
2676 podpages_deps="perl"
2677 manpages_deps="perl pod2man"
2678 htmlpages_deps="perl"
2679 htmlpages_deps_any="makeinfo_html texi2html"
2680 txtpages_deps="perl makeinfo"
2681 doc_deps_any="manpages htmlpages podpages txtpages"
2682
2683 # default parameters
2684
2685 logfile="config.log"
2686
2687 # installation paths
2688 prefix_default="/usr/local"
2689 bindir_default='${prefix}/bin'
2690 datadir_default='${prefix}/share/ffmpeg'
2691 docdir_default='${prefix}/share/doc/ffmpeg'
2692 incdir_default='${prefix}/include'
2693 libdir_default='${prefix}/lib'
2694 mandir_default='${prefix}/share/man'
2695
2696 # toolchain
2697 ar_default="ar"
2698 cc_default="gcc"
2699 cxx_default="g++"
2700 host_cc_default="gcc"
2701 cp_f="cp -f"
2702 doxygen_default="doxygen"
2703 install="install"
2704 ln_s="ln -s -f"
2705 nm_default="nm -g"
2706 objformat="elf"
2707 pkg_config_default=pkg-config
2708 if ranlib 2>&1 | grep -q "\-D "; then
2709     ranlib_default="ranlib -D"
2710 else
2711     ranlib_default="ranlib"
2712 fi
2713 strip_default="strip"
2714 yasmexe_default="yasm"
2715 windres_default="windres"
2716
2717 # OS
2718 target_os_default=$(tolower $(uname -s))
2719 host_os=$target_os_default
2720
2721 # machine
2722 if test "$target_os_default" = aix; then
2723     arch_default=$(uname -p)
2724     strip_default="strip -X32_64"
2725 else
2726     arch_default=$(uname -m)
2727 fi
2728 cpu="generic"
2729 intrinsics="none"
2730
2731 # configurable options
2732 enable $PROGRAM_LIST
2733 enable $DOCUMENT_LIST
2734 enable $EXAMPLE_LIST
2735 enable $(filter_out avresample $LIBRARY_LIST)
2736 enable stripping
2737
2738 enable asm
2739 enable debug
2740 enable doc
2741 enable faan faandct faanidct
2742 enable optimizations
2743 enable runtime_cpudetect
2744 enable safe_bitstream_reader
2745 enable static
2746 enable swscale_alpha
2747
2748 sws_max_filter_size_default=256
2749 set_default sws_max_filter_size
2750
2751 # Enable hwaccels by default.
2752 enable dxva2 vaapi vda vdpau xvmc
2753 enable xlib
2754
2755 # build settings
2756 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2757 LIBPREF="lib"
2758 LIBSUF=".a"
2759 FULLNAME='$(NAME)$(BUILDSUF)'
2760 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2761 SLIBPREF="lib"
2762 SLIBSUF=".so"
2763 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2764 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2765 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2766 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2767 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2768 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2769
2770 asflags_filter=echo
2771 cflags_filter=echo
2772 ldflags_filter=echo
2773
2774 AS_C='-c'
2775 AS_O='-o $@'
2776 CC_C='-c'
2777 CC_E='-E -o $@'
2778 CC_O='-o $@'
2779 CXX_C='-c'
2780 CXX_O='-o $@'
2781 LD_O='-o $@'
2782 LD_LIB='-l%'
2783 LD_PATH='-L'
2784 HOSTCC_C='-c'
2785 HOSTCC_E='-E -o $@'
2786 HOSTCC_O='-o $@'
2787 HOSTLD_O='-o $@'
2788
2789 host_libs='-lm'
2790 host_cflags_filter=echo
2791 host_ldflags_filter=echo
2792
2793 target_path='$(CURDIR)'
2794
2795 # since the object filename is not given with the -MM flag, the compiler
2796 # is only able to print the basename, and we must add the path ourselves
2797 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2798 DEPFLAGS='-MM'
2799
2800 # find source path
2801 if test -f configure; then
2802     source_path=.
2803 else
2804     source_path=$(cd $(dirname "$0"); pwd)
2805     echo "$source_path" | grep -q '[[:blank:]]' &&
2806         die "Out of tree builds are impossible with whitespace in source path."
2807     test -e "$source_path/config.h" &&
2808         die "Out of tree builds are impossible with config.h in source dir."
2809 fi
2810
2811 for v in "$@"; do
2812     r=${v#*=}
2813     l=${v%"$r"}
2814     r=$(sh_quote "$r")
2815     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2816 done
2817
2818 find_things(){
2819     thing=$1
2820     pattern=$2
2821     file=$source_path/$3
2822     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2823 }
2824
2825 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2826 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2827 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2828 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2829 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2830 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2831 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2832 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2833 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2834 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2835 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2836
2837 ALL_COMPONENTS="
2838     $BSF_LIST
2839     $DECODER_LIST
2840     $DEMUXER_LIST
2841     $ENCODER_LIST
2842     $FILTER_LIST
2843     $HWACCEL_LIST
2844     $INDEV_LIST
2845     $MUXER_LIST
2846     $OUTDEV_LIST
2847     $PARSER_LIST
2848     $PROTOCOL_LIST
2849 "
2850
2851 for n in $COMPONENT_LIST; do
2852     v=$(toupper ${n%s})_LIST
2853     eval enable \$$v
2854     eval ${n}_if_any="\$$v"
2855 done
2856
2857 enable $ARCH_EXT_LIST
2858
2859 die_unknown(){
2860     echo "Unknown option \"$1\"."
2861     echo "See $0 --help for available options."
2862     exit 1
2863 }
2864
2865 print_3_columns() {
2866     cat | tr ' ' '\n' | sort | pr -r -3 -t
2867 }
2868
2869 show_list() {
2870     suffix=_$1
2871     shift
2872     echo $* | sed s/$suffix//g | print_3_columns
2873     exit 0
2874 }
2875
2876 rand_list(){
2877     IFS=', '
2878     set -- $*
2879     unset IFS
2880     for thing; do
2881         comp=${thing%:*}
2882         prob=${thing#$comp}
2883         prob=${prob#:}
2884         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2885         echo "prob ${prob:-0.5}"
2886         printf '%s\n' $comp
2887     done
2888 }
2889
2890 do_random(){
2891     action=$1
2892     shift
2893     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2894     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2895 }
2896
2897 for opt do
2898     optval="${opt#*=}"
2899     case "$opt" in
2900         --extra-ldflags=*)
2901             add_ldflags $optval
2902         ;;
2903         --extra-ldexeflags=*)
2904             add_ldexeflags $optval
2905         ;;
2906         --extra-libs=*)
2907             add_extralibs $optval
2908         ;;
2909         --disable-devices)
2910             disable $INDEV_LIST $OUTDEV_LIST
2911         ;;
2912         --enable-debug=*)
2913             debuglevel="$optval"
2914         ;;
2915         --disable-programs)
2916             disable $PROGRAM_LIST
2917         ;;
2918         --disable-everything)
2919             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2920         ;;
2921         --disable-all)
2922             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2923             disable $LIBRARY_LIST $PROGRAM_LIST doc
2924         ;;
2925         --enable-random|--disable-random)
2926             action=${opt%%-random}
2927             do_random ${action#--} $COMPONENT_LIST
2928         ;;
2929         --enable-random=*|--disable-random=*)
2930             action=${opt%%-random=*}
2931             do_random ${action#--} $optval
2932         ;;
2933         --enable-*=*|--disable-*=*)
2934             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2935             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2936             eval list=\$$(toupper $thing)_LIST
2937             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2938             list=$(filter "$name" $list)
2939             [ "$list" = "" ] && warn "Option $opt did not match anything"
2940             $action $list
2941         ;;
2942         --enable-?*|--disable-?*)
2943             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2944             if is_in $option $COMPONENT_LIST; then
2945                 test $action = disable && action=unset
2946                 eval $action \$$(toupper ${option%s})_LIST
2947             elif is_in $option $CMDLINE_SELECT; then
2948                 $action $option
2949             else
2950                 die_unknown $opt
2951             fi
2952         ;;
2953         --list-*)
2954             NAME="${opt#--list-}"
2955             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2956             NAME=${NAME%s}
2957             eval show_list $NAME \$$(toupper $NAME)_LIST
2958         ;;
2959         --help|-h) show_help
2960         ;;
2961         --fatal-warnings) enable fatal_warnings
2962         ;;
2963         *)
2964             optname="${opt%%=*}"
2965             optname="${optname#--}"
2966             optname=$(echo "$optname" | sed 's/-/_/g')
2967             if is_in $optname $CMDLINE_SET; then
2968                 eval $optname='$optval'
2969             elif is_in $optname $CMDLINE_APPEND; then
2970                 append $optname "$optval"
2971             else
2972                 die_unknown $opt
2973             fi
2974         ;;
2975     esac
2976 done
2977
2978 disabled logging && logfile=/dev/null
2979
2980 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2981 set >> $logfile
2982
2983 test -n "$cross_prefix" && enable cross_compile
2984
2985 if enabled cross_compile; then
2986     test -n "$arch" && test -n "$target_os" ||
2987         die "Must specify target arch and OS when cross-compiling"
2988 fi
2989
2990 ar_default="${cross_prefix}${ar_default}"
2991 cc_default="${cross_prefix}${cc_default}"
2992 cxx_default="${cross_prefix}${cxx_default}"
2993 nm_default="${cross_prefix}${nm_default}"
2994 pkg_config_default="${cross_prefix}${pkg_config_default}"
2995 ranlib_default="${cross_prefix}${ranlib_default}"
2996 strip_default="${cross_prefix}${strip_default}"
2997 windres_default="${cross_prefix}${windres_default}"
2998
2999 sysinclude_default="${sysroot}/usr/include"
3000
3001 test -n "$valgrind" && toolchain="valgrind-memcheck"
3002
3003 case "$toolchain" in
3004     clang-asan)
3005         cc_default="clang"
3006         add_cflags  -fsanitize=address
3007         add_ldflags -fsanitize=address
3008     ;;
3009     clang-tsan)
3010         cc_default="clang"
3011         add_cflags  -fsanitize=thread -pie
3012         add_ldflags -fsanitize=thread -pie
3013     ;;
3014     clang-usan)
3015         cc_default="clang"
3016         add_cflags  -fsanitize=undefined
3017         add_ldflags -fsanitize=undefined
3018     ;;
3019     gcc-asan)
3020         cc_default="gcc"
3021         add_cflags  -fsanitize=address
3022         add_ldflags -fsanitize=address
3023     ;;
3024     gcc-tsan)
3025         cc_default="gcc"
3026         add_cflags  -fsanitize=thread -pie -fPIC
3027         add_ldflags -fsanitize=thread -pie -fPIC
3028     ;;
3029     gcc-usan)
3030         cc_default="gcc"
3031         add_cflags  -fsanitize=undefined
3032         add_ldflags -fsanitize=undefined
3033     ;;
3034     valgrind-massif)
3035         target_exec_default=${valgrind:-"valgrind"}
3036         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"
3037     ;;
3038     valgrind-memcheck)
3039         target_exec_default=${valgrind:-"valgrind"}
3040         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3041     ;;
3042     msvc)
3043         # Check whether the current MSVC version needs the C99 converter.
3044         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3045         # support enough of C99 to build ffmpeg. Default to the new
3046         # behaviour if the regexp was unable to match anything, since this
3047         # successfully parses the version number of existing supported
3048         # versions that require the converter (MSVC 2010 and 2012).
3049         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3050         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3051             cc_default="cl"
3052         else
3053             cc_default="c99wrap cl"
3054         fi
3055         ld_default="link"
3056         nm_default="dumpbin -symbols"
3057         ar_default="lib"
3058         target_os_default="win32"
3059         # Use a relative path for TMPDIR. This makes sure all the
3060         # ffconf temp files are written with a relative path, avoiding
3061         # issues with msys/win32 path conversion for MSVC parameters
3062         # such as -Fo<file> or -out:<file>.
3063         TMPDIR=.
3064     ;;
3065     icl)
3066         cc_default="icl"
3067         ld_default="xilink"
3068         nm_default="dumpbin -symbols"
3069         ar_default="xilib"
3070         target_os_default="win32"
3071         TMPDIR=.
3072     ;;
3073     gcov)
3074         add_cflags  -fprofile-arcs -ftest-coverage
3075         add_ldflags -fprofile-arcs -ftest-coverage
3076     ;;
3077     hardened)
3078         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3079         add_cflags   -fno-strict-overflow -fstack-protector-all
3080         add_ldflags  -Wl,-z,relro -Wl,-z,now
3081     ;;
3082     ?*)
3083         die "Unknown toolchain $toolchain"
3084     ;;
3085 esac
3086
3087 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3088     target_exec target_os yasmexe
3089 enabled cross_compile || host_cc_default=$cc
3090 set_default host_cc
3091
3092 pkg_config_fail_message=""
3093 if ! $pkg_config --version >/dev/null 2>&1; then
3094     warn "$pkg_config not found, library detection may fail."
3095     pkg_config=false
3096 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3097     pkg_config_fail_message="
3098 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3099 fi
3100
3101 if test $doxygen != $doxygen_default && \
3102   ! $doxygen --version >/dev/null 2>&1; then
3103     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3104 fi
3105
3106 exesuf() {
3107     case $1 in
3108         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3109     esac
3110 }
3111
3112 EXESUF=$(exesuf $target_os)
3113 HOSTEXESUF=$(exesuf $host_os)
3114
3115 # set temporary file name
3116 : ${TMPDIR:=$TEMPDIR}
3117 : ${TMPDIR:=$TMP}
3118 : ${TMPDIR:=/tmp}
3119
3120 if [ -n "$tempprefix" ] ; then
3121     mktemp(){
3122         echo $tempprefix.${HOSTNAME}.${UID}
3123     }
3124 elif ! check_cmd mktemp -u XXXXXX; then
3125     # simple replacement for missing mktemp
3126     # NOT SAFE FOR GENERAL USE
3127     mktemp(){
3128         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3129     }
3130 fi
3131
3132 tmpfile(){
3133     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3134         (set -C; exec > $tmp) 2>/dev/null ||
3135         die "Unable to create temporary file in $TMPDIR."
3136     append TMPFILES $tmp
3137     eval $1=$tmp
3138 }
3139
3140 trap 'rm -f -- $TMPFILES' EXIT
3141
3142 tmpfile TMPASM .asm
3143 tmpfile TMPC   .c
3144 tmpfile TMPCPP .cpp
3145 tmpfile TMPE   $EXESUF
3146 tmpfile TMPH   .h
3147 tmpfile TMPM   .m
3148 tmpfile TMPO   .o
3149 tmpfile TMPS   .S
3150 tmpfile TMPSH  .sh
3151 tmpfile TMPV   .ver
3152
3153 unset -f mktemp
3154
3155 chmod +x $TMPE
3156
3157 # make sure we can execute files in $TMPDIR
3158 cat > $TMPSH 2>> $logfile <<EOF
3159 #! /bin/sh
3160 EOF
3161 chmod +x $TMPSH >> $logfile 2>&1
3162 if ! $TMPSH >> $logfile 2>&1; then
3163     cat <<EOF
3164 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3165 variable to another directory and make sure that it is not mounted noexec.
3166 EOF
3167     die "Sanity test failed."
3168 fi
3169
3170 armasm_flags(){
3171     for flag; do
3172         case $flag in
3173             # Filter out MSVC cl.exe options from cflags that shouldn't
3174             # be passed to gas-preprocessor
3175             -M[TD]*)                                            ;;
3176             *)                  echo $flag                      ;;
3177         esac
3178    done
3179 }
3180
3181 ccc_flags(){
3182     for flag; do
3183         case $flag in
3184             -std=c99)           echo -c99                       ;;
3185             -mcpu=*)            echo -arch ${flag#*=}           ;;
3186             -mieee)             echo -ieee                      ;;
3187             -O*|-fast)          echo $flag                      ;;
3188             -fno-math-errno)    echo -assume nomath_errno       ;;
3189             -g)                 echo -g3                        ;;
3190             -Wall)              echo -msg_enable level2         ;;
3191             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3192             -Wl,*)              echo $flag                      ;;
3193             -f*|-W*)                                            ;;
3194             *)                  echo $flag                      ;;
3195         esac
3196    done
3197 }
3198
3199 cparser_flags(){
3200     for flag; do
3201         case $flag in
3202             -Wno-switch)             echo -Wno-switch-enum ;;
3203             -Wno-format-zero-length) ;;
3204             -Wdisabled-optimization) ;;
3205             -Wno-pointer-sign)       echo -Wno-other ;;
3206             *)                       echo $flag ;;
3207         esac
3208     done
3209 }
3210
3211 msvc_common_flags(){
3212     for flag; do
3213         case $flag in
3214             # In addition to specifying certain flags under the compiler
3215             # specific filters, they must be specified here as well or else the
3216             # generic catch all at the bottom will print the original flag.
3217             -Wall)                ;;
3218             -std=c99)             ;;
3219             # Common flags
3220             -fomit-frame-pointer) ;;
3221             -g)                   echo -Z7 ;;
3222             -fno-math-errno)      ;;
3223             -fno-common)          ;;
3224             -fno-signed-zeros)    ;;
3225             -fPIC)                ;;
3226             -mthumb)              ;;
3227             -march=*)             ;;
3228             -lz)                  echo zlib.lib ;;
3229             -lavifil32)           echo vfw32.lib ;;
3230             -lavicap32)           echo vfw32.lib user32.lib ;;
3231             -l*)                  echo ${flag#-l}.lib ;;
3232             -L*)                  echo -libpath:${flag#-L} ;;
3233             *)                    echo $flag ;;
3234         esac
3235     done
3236 }
3237
3238 msvc_flags(){
3239     msvc_common_flags "$@"
3240     for flag; do
3241         case $flag in
3242             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3243                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3244                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3245                                        -wd4554 \
3246                                        -wd4273 -wd4701 ;;
3247         esac
3248     done
3249 }
3250
3251 icl_flags(){
3252     msvc_common_flags "$@"
3253     for flag; do
3254         case $flag in
3255             # Despite what Intel's documentation says -Wall, which is supported
3256             # on Windows, does enable remarks so disable them here.
3257             -Wall)                echo $flag -Qdiag-disable:remark ;;
3258             -std=c99)             echo -Qstd=c99 ;;
3259             -flto)                echo -ipo ;;
3260         esac
3261     done
3262 }
3263
3264 icc_flags(){
3265     for flag; do
3266         case $flag in
3267             -flto)                echo -ipo ;;
3268             *)                    echo $flag ;;
3269         esac
3270     done
3271 }
3272
3273 pgi_flags(){
3274     for flag; do
3275         case $flag in
3276             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3277             -fomit-frame-pointer) echo -Mnoframe ;;
3278             -g)                   echo -gopt ;;
3279             *)                    echo $flag ;;
3280         esac
3281     done
3282 }
3283
3284 suncc_flags(){
3285     for flag; do
3286         case $flag in
3287             -march=*|-mcpu=*)
3288                 case "${flag#*=}" in
3289                     native)                   echo -xtarget=native       ;;
3290                     v9|niagara)               echo -xarch=sparc          ;;
3291                     ultrasparc)               echo -xarch=sparcvis       ;;
3292                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3293                     i586|pentium)             echo -xchip=pentium        ;;
3294                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3295                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3296                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3297                     pentium4*)          echo -xtarget=pentium4           ;;
3298                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3299                     *-sse3)             echo -xarch=sse3                 ;;
3300                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3301                     bonnell)                   echo -xarch=ssse3         ;;
3302                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3303                     westmere)                  echo -xtarget=westmere    ;;
3304                     silvermont)                echo -xarch=sse4_2        ;;
3305                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3306                     core-avx*|ivybridge|haswell|broadwell)
3307                                                echo -xarch=avx           ;;
3308                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3309                     btver1)                    echo -xarch=amdsse4a      ;;
3310                     btver2|bdver*)             echo -xarch=avx           ;;
3311                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3312                     k8|opteron|athlon64|athlon-fx)
3313                                                echo -xarch=sse2a         ;;
3314                     athlon*)                   echo -xarch=pentium_proa  ;;
3315                 esac
3316                 ;;
3317             -std=c99)             echo -xc99              ;;
3318             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3319             -fPIC)                echo -KPIC -xcode=pic32 ;;
3320             -W*,*)                echo $flag              ;;
3321             -f*-*|-W*|-mimpure-text)                      ;;
3322             -shared)              echo -G                 ;;
3323             *)                    echo $flag              ;;
3324         esac
3325     done
3326 }
3327
3328 tms470_flags(){
3329     for flag; do
3330         case $flag in
3331             -march=*|-mcpu=*)
3332                 case "${flag#*=}" in
3333                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3334                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3335                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3336                     armv6*|arm11*)          echo -mv=6   ;;
3337                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3338                                             echo -mv=5e  ;;
3339                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3340                 esac
3341                 ;;
3342             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3343             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3344             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3345             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3346             -msoft-float)   echo --float_support=vfplib       ;;
3347             -O[0-3]|-mf=*)  echo $flag                        ;;
3348             -g)             echo -g -mn                       ;;
3349             -pds=*)         echo $flag                        ;;
3350             -D*|-I*)        echo $flag                        ;;
3351             --gcc|--abi=*)  echo $flag                        ;;
3352             -me)            echo $flag                        ;;
3353         esac
3354     done
3355 }
3356
3357 probe_cc(){
3358     pfx=$1
3359     _cc=$2
3360
3361     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3362     unset _ld_o _ldflags _ld_lib _ld_path
3363     unset _depflags _DEPCMD _DEPFLAGS
3364     _flags_filter=echo
3365
3366     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3367         true # no-op to avoid reading stdin in following checks
3368     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3369         _type=llvm_gcc
3370         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3371         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3372         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3373         _cflags_speed='-O3'
3374         _cflags_size='-Os'
3375     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3376         _type=gcc
3377         gcc_version=$($_cc --version | head -n1)
3378         gcc_basever=$($_cc -dumpversion)
3379         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3380         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3381         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3382         if ! $_cc -dumpversion | grep -q '^2\.'; then
3383             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3384         fi
3385         _cflags_speed='-O3'
3386         _cflags_size='-Os'
3387     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3388         _type=icc
3389         _ident=$($_cc --version | head -n1)
3390         _depflags='-MMD'
3391         _cflags_speed='-O3'
3392         _cflags_size='-Os'
3393         _cflags_noopt='-O1'
3394         _flags_filter=icc_flags
3395     elif $_cc -v 2>&1 | grep -q xlc; then
3396         _type=xlc
3397         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3398         _cflags_speed='-O5'
3399         _cflags_size='-O5 -qcompact'
3400     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3401         _type=ccc
3402         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3403         _DEPFLAGS='-M'
3404         _cflags_speed='-fast'
3405         _cflags_size='-O1'
3406         _flags_filter=ccc_flags
3407     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3408         test -d "$sysroot" || die "No valid sysroot specified."
3409         _type=armcc
3410         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3411         armcc_conf="$PWD/armcc.conf"
3412         $_cc --arm_linux_configure                 \
3413              --arm_linux_config_file="$armcc_conf" \
3414              --configure_sysroot="$sysroot"        \
3415              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3416              die "Error creating armcc configuration file."
3417         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3418         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3419         as_default="${cross_prefix}gcc"
3420         _depflags='-MMD'
3421         _cflags_speed='-O3'
3422         _cflags_size='-Os'
3423     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3424         _type=tms470
3425         _ident=$($_cc -version | head -n1 | tr -s ' ')
3426         _flags='--gcc --abi=eabi -me'
3427         _cc_e='-ppl -fe=$@'
3428         _cc_o='-fe=$@'
3429         _depflags='-ppa -ppd=$(@:.o=.d)'
3430         _cflags_speed='-O3 -mf=5'
3431         _cflags_size='-O3 -mf=2'
3432         _flags_filter=tms470_flags
3433     elif $_cc -v 2>&1 | grep -q clang; then
3434         _type=clang
3435         _ident=$($_cc --version | head -n1)
3436         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3437         _cflags_speed='-O3'
3438         _cflags_size='-Os'
3439     elif $_cc -V 2>&1 | grep -q Sun; then
3440         _type=suncc
3441         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3442         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3443         _DEPFLAGS='-xM1 -xc99'
3444         _ldflags='-std=c99'
3445         _cflags_speed='-O5'
3446         _cflags_size='-O5 -xspace'
3447         _flags_filter=suncc_flags
3448     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3449         _type=pathscale
3450         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3451         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3452         _cflags_speed='-O2'
3453         _cflags_size='-Os'
3454         _flags_filter='filter_out -Wdisabled-optimization'
3455     elif $_cc -v 2>&1 | grep -q Open64; then
3456         _type=open64
3457         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3458         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3459         _cflags_speed='-O2'
3460         _cflags_size='-Os'
3461         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3462     elif $_cc -V 2>&1 | grep -q Portland; then
3463         _type=pgi
3464         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3465         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3466         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3467         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3468         _cflags_noopt="-O"
3469         _flags_filter=pgi_flags
3470     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3471         _type=armasm
3472         _ident=$($_cc | head -n1)
3473         # 4509: "This form of conditional instruction is deprecated"
3474         _flags="-nologo -ignore 4509"
3475         _flags_filter=armasm_flags
3476     elif $_cc 2>&1 | grep -q Intel; then
3477         _type=icl
3478         _ident=$($cc 2>&1 | head -n1)
3479         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3480         # Not only is O3 broken on 13.x+ but it is slower on all previous
3481         # versions (tested) as well.
3482         _cflags_speed="-O2"
3483         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3484         if $_cc 2>&1 | grep -q Linker; then
3485             _ld_o='-out:$@'
3486         else
3487             _ld_o='-Fe$@'
3488         fi
3489         _cc_o='-Fo$@'
3490         _cc_e='-P'
3491         _flags_filter=icl_flags
3492         _ld_lib='lib%.a'
3493         _ld_path='-libpath:'
3494         # -Qdiag-error to make icl error when seeing certain unknown arguments
3495         _flags='-nologo -Qdiag-error:4044,10157'
3496         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3497         # with MSVC which enables it by default.
3498         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3499         if [ $pfx = hostcc ]; then
3500             append _cflags -Dsnprintf=_snprintf
3501         fi
3502         disable stripping
3503     elif $_cc 2>&1 | grep -q Microsoft; then
3504         _type=msvc
3505         _ident=$($cc 2>&1 | head -n1)
3506         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3507         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3508         _cflags_speed="-O2"
3509         _cflags_size="-O1"
3510         if $_cc 2>&1 | grep -q Linker; then
3511             _ld_o='-out:$@'
3512         else
3513             _ld_o='-Fe$@'
3514         fi
3515         _cc_o='-Fo$@'
3516         _cc_e='-P -Fi$@'
3517         _flags_filter=msvc_flags
3518         _ld_lib='lib%.a'
3519         _ld_path='-libpath:'
3520         _flags='-nologo'
3521         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3522         if [ $pfx = hostcc ]; then
3523             append _cflags -Dsnprintf=_snprintf
3524         fi
3525         disable stripping
3526     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3527         _type=cparser
3528         _ident=$($_cc --version | head -n1)
3529         _depflags='-MMD'
3530         _cflags_speed='-O4'
3531         _cflags_size='-O2'
3532         _flags_filter=cparser_flags
3533     fi
3534
3535     eval ${pfx}_type=\$_type
3536     eval ${pfx}_ident=\$_ident
3537 }
3538
3539 set_ccvars(){
3540     eval ${1}_C=\${_cc_c-\${${1}_C}}
3541     eval ${1}_E=\${_cc_e-\${${1}_E}}
3542     eval ${1}_O=\${_cc_o-\${${1}_O}}
3543
3544     if [ -n "$_depflags" ]; then
3545         eval ${1}_DEPFLAGS=\$_depflags
3546     else
3547         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3548         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3549         eval DEP${1}FLAGS=\$_flags
3550     fi
3551 }
3552
3553 probe_cc cc "$cc"
3554 cflags_filter=$_flags_filter
3555 cflags_speed=$_cflags_speed
3556 cflags_size=$_cflags_size
3557 cflags_noopt=$_cflags_noopt
3558 add_cflags $_flags $_cflags
3559 cc_ldflags=$_ldflags
3560 set_ccvars CC
3561
3562 probe_cc hostcc "$host_cc"
3563 host_cflags_filter=$_flags_filter
3564 add_host_cflags  $_flags $_cflags
3565 set_ccvars HOSTCC
3566
3567 test -n "$cc_type" && enable $cc_type ||
3568     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3569
3570 : ${as_default:=$cc}
3571 : ${dep_cc_default:=$cc}
3572 : ${ld_default:=$cc}
3573 : ${host_ld_default:=$host_cc}
3574 set_default ar as dep_cc ld host_ld windres
3575
3576 probe_cc as "$as"
3577 asflags_filter=$_flags_filter
3578 add_asflags $_flags $_cflags
3579 set_ccvars AS
3580
3581 probe_cc ld "$ld"
3582 ldflags_filter=$_flags_filter
3583 add_ldflags $_flags $_ldflags
3584 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3585 LD_O=${_ld_o-$LD_O}
3586 LD_LIB=${_ld_lib-$LD_LIB}
3587 LD_PATH=${_ld_path-$LD_PATH}
3588
3589 probe_cc hostld "$host_ld"
3590 host_ldflags_filter=$_flags_filter
3591 add_host_ldflags $_flags $_ldflags
3592 HOSTLD_O=${_ld_o-$HOSTLD_O}
3593
3594 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3595     probe_cc depcc "$dep_cc"
3596     CCDEP=${_DEPCMD:-$DEPCMD}
3597     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3598     DEPCCFLAGS=$_flags
3599 fi
3600
3601 if $ar 2>&1 | grep -q Microsoft; then
3602     arflags="-nologo"
3603     ar_o='-out:$@'
3604 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3605     arflags="rq"
3606     ar_o='$@'
3607 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3608     arflags='-Xany -r -c'
3609     ar_o='$@'
3610 elif $ar 2>&1 | grep -q "\[D\] "; then
3611     arflags="rcD"
3612     ar_o='$@'
3613 else
3614     arflags="rc"
3615     ar_o='$@'
3616 fi
3617
3618 add_cflags $extra_cflags
3619 add_cxxflags $extra_cxxflags
3620 add_asflags $extra_cflags
3621
3622 if test -n "$sysroot"; then
3623     case "$cc_type" in
3624         gcc|llvm_gcc|clang)
3625             add_cppflags --sysroot="$sysroot"
3626             add_ldflags --sysroot="$sysroot"
3627 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3628             add_cppflags -isysroot "$sysroot"
3629             add_ldflags -isysroot "$sysroot"
3630         ;;
3631         tms470)
3632             add_cppflags -I"$sysinclude"
3633             add_ldflags  --sysroot="$sysroot"
3634         ;;
3635     esac
3636 fi
3637
3638 if test "$cpu" = host; then
3639     enabled cross_compile &&
3640         die "--cpu=host makes no sense when cross-compiling."
3641
3642     case "$cc_type" in
3643         gcc|llvm_gcc)
3644             check_native(){
3645                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3646                 sed -n "/cc1.*$1=/{
3647                             s/.*$1=\\([^ ]*\\).*/\\1/
3648                             p
3649                             q
3650                         }" $TMPE
3651             }
3652             cpu=$(check_native -march || check_native -mcpu)
3653         ;;
3654     esac
3655
3656     test "${cpu:-host}" = host &&
3657         die "--cpu=host not supported with compiler $cc"
3658 fi
3659
3660 # Deal with common $arch aliases
3661 case "$arch" in
3662     aarch64|arm64)
3663         arch="aarch64"
3664     ;;
3665     arm*|iPad*|iPhone*)
3666         arch="arm"
3667     ;;
3668     mips*|IP*)
3669         arch="mips"
3670     ;;
3671     parisc*|hppa*)
3672         arch="parisc"
3673     ;;
3674     "Power Macintosh"|ppc*|powerpc*)
3675         arch="ppc"
3676     ;;
3677     s390|s390x)
3678         arch="s390"
3679     ;;
3680     sh4|sh)
3681         arch="sh4"
3682     ;;
3683     sun4u|sparc*)
3684         arch="sparc"
3685     ;;
3686     tilegx|tile-gx)
3687         arch="tilegx"
3688     ;;
3689     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3690         arch="x86"
3691     ;;
3692 esac
3693
3694 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3695 enable $arch
3696
3697 # Add processor-specific flags
3698 if enabled aarch64; then
3699
3700     case $cpu in
3701         armv*)
3702             cpuflags="-march=$cpu"
3703         ;;
3704         *)
3705             cpuflags="-mcpu=$cpu"
3706         ;;
3707     esac
3708
3709 elif enabled alpha; then
3710
3711     cpuflags="-mcpu=$cpu"
3712
3713 elif enabled arm; then
3714
3715     check_arm_arch() {
3716         check_cpp_condition stddef.h \
3717             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3718             $cpuflags
3719     }
3720
3721     probe_arm_arch() {
3722         if   check_arm_arch 4;        then echo armv4;
3723         elif check_arm_arch 4T;       then echo armv4t;
3724         elif check_arm_arch 5;        then echo armv5;
3725         elif check_arm_arch 5E;       then echo armv5e;
3726         elif check_arm_arch 5T;       then echo armv5t;
3727         elif check_arm_arch 5TE;      then echo armv5te;
3728         elif check_arm_arch 5TEJ;     then echo armv5te;
3729         elif check_arm_arch 6;        then echo armv6;
3730         elif check_arm_arch 6J;       then echo armv6j;
3731         elif check_arm_arch 6K;       then echo armv6k;
3732         elif check_arm_arch 6Z;       then echo armv6z;
3733         elif check_arm_arch 6ZK;      then echo armv6zk;
3734         elif check_arm_arch 6T2;      then echo armv6t2;
3735         elif check_arm_arch 7;        then echo armv7;
3736         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3737         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3738         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3739         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3740         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3741         fi
3742     }
3743
3744     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3745
3746     case $cpu in
3747         armv*)
3748             cpuflags="-march=$cpu"
3749             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3750         ;;
3751         *)
3752             cpuflags="-mcpu=$cpu"
3753             case $cpu in
3754                 cortex-a*)                               subarch=armv7a  ;;
3755                 cortex-r*)                               subarch=armv7r  ;;
3756                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3757                 arm11*)                                  subarch=armv6   ;;
3758                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3759                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3760                 *)                             subarch=$(probe_arm_arch) ;;
3761             esac
3762         ;;
3763     esac
3764
3765     case "$subarch" in
3766         armv5t*)    enable fast_clz                ;;
3767         armv[6-8]*)
3768             enable fast_clz
3769             disabled fast_unaligned || enable fast_unaligned
3770             ;;
3771     esac
3772
3773 elif enabled avr32; then
3774
3775     case $cpu in
3776         ap7[02]0[0-2])
3777             subarch="avr32_ap"
3778             cpuflags="-mpart=$cpu"
3779         ;;
3780         ap)
3781             subarch="avr32_ap"
3782             cpuflags="-march=$cpu"
3783         ;;
3784         uc3[ab]*)
3785             subarch="avr32_uc"
3786             cpuflags="-mcpu=$cpu"
3787         ;;
3788         uc)
3789             subarch="avr32_uc"
3790             cpuflags="-march=$cpu"
3791         ;;
3792     esac
3793
3794 elif enabled bfin; then
3795
3796     cpuflags="-mcpu=$cpu"
3797
3798 elif enabled mips; then
3799
3800     cpuflags="-march=$cpu"
3801
3802     case $cpu in
3803         24kc)
3804             disable mipsfpu
3805             disable mipsdspr1
3806             disable mipsdspr2
3807         ;;
3808         24kf*)
3809             disable mipsdspr1
3810             disable mipsdspr2
3811         ;;
3812         24kec|34kc|1004kc)
3813             disable mipsfpu
3814             disable mipsdspr2
3815         ;;
3816         24kef*|34kf*|1004kf*)
3817             disable mipsdspr2
3818         ;;
3819         74kc)
3820             disable mipsfpu
3821         ;;
3822     esac
3823
3824 elif enabled ppc; then
3825
3826     disable ldbrx
3827     disable vsx
3828
3829     case $(tolower $cpu) in
3830         601|ppc601|powerpc601)
3831             cpuflags="-mcpu=601"
3832             disable altivec
3833         ;;
3834         603*|ppc603*|powerpc603*)
3835             cpuflags="-mcpu=603"
3836             disable altivec
3837         ;;
3838         604*|ppc604*|powerpc604*)
3839             cpuflags="-mcpu=604"
3840             disable altivec
3841         ;;
3842         g3|75*|ppc75*|powerpc75*)
3843             cpuflags="-mcpu=750"
3844             disable altivec
3845         ;;
3846         g4|745*|ppc745*|powerpc745*)
3847             cpuflags="-mcpu=7450"
3848         ;;
3849         74*|ppc74*|powerpc74*)
3850             cpuflags="-mcpu=7400"
3851         ;;
3852         g5|970|ppc970|powerpc970)
3853             cpuflags="-mcpu=970"
3854         ;;
3855         power[3-8]*)
3856             cpuflags="-mcpu=$cpu"
3857         ;;
3858         cell)
3859             cpuflags="-mcpu=cell"
3860             enable ldbrx
3861         ;;
3862         e500mc)
3863             cpuflags="-mcpu=e500mc"
3864             disable altivec
3865         ;;
3866         e500v2)
3867             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3868             disable altivec
3869             disable dcbzl
3870         ;;
3871         e500)
3872             cpuflags="-mcpu=8540 -mhard-float"
3873             disable altivec
3874             disable dcbzl
3875         ;;
3876     esac
3877
3878 elif enabled sparc; then
3879
3880     case $cpu in
3881         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3882             cpuflags="-mcpu=$cpu"
3883         ;;
3884         ultrasparc*|niagara[234])
3885             cpuflags="-mcpu=$cpu"
3886         ;;
3887     esac
3888
3889 elif enabled x86; then
3890
3891     case $cpu in
3892         i[345]86|pentium)
3893             cpuflags="-march=$cpu"
3894             disable i686
3895             disable mmx
3896         ;;
3897         # targets that do NOT support nopl and conditional mov (cmov)
3898         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3899             cpuflags="-march=$cpu"
3900             disable i686
3901         ;;
3902         # targets that do support nopl and conditional mov (cmov)
3903         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3904         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3905             cpuflags="-march=$cpu"
3906             enable i686
3907             enable fast_cmov
3908         ;;
3909         # targets that do support conditional mov but on which it's slow
3910         pentium4|pentium4m|prescott|nocona)
3911             cpuflags="-march=$cpu"
3912             enable i686
3913             disable fast_cmov
3914         ;;
3915     esac
3916
3917 fi
3918
3919 if [ "$cpu" != generic ]; then
3920     add_cflags  $cpuflags
3921     add_asflags $cpuflags
3922 fi
3923
3924 # compiler sanity check
3925 check_exec <<EOF
3926 int main(void){ return 0; }
3927 EOF
3928 if test "$?" != 0; then
3929     echo "$cc is unable to create an executable file."
3930     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3931         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3932         echo "Only do this if you know what cross compiling means."
3933     fi
3934     die "C compiler test failed."
3935 fi
3936
3937 add_cppflags -D_ISOC99_SOURCE
3938 add_cxxflags -D__STDC_CONSTANT_MACROS
3939 check_cflags -std=c99
3940 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3941 #include <stdlib.h>
3942 EOF
3943 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3944 #include <stdlib.h>
3945 EOF
3946
3947 add_host_cppflags -D_ISOC99_SOURCE
3948 check_host_cflags -std=c99
3949 check_host_cflags -Wall
3950 check_host_cflags -O3
3951
3952 check_64bit(){
3953     arch32=$1
3954     arch64=$2
3955     expr=$3
3956     check_code cc "" "int test[2*($expr) - 1]" &&
3957         subarch=$arch64 || subarch=$arch32
3958 }
3959
3960 case "$arch" in
3961     aarch64|alpha|ia64)
3962         spic=$shared
3963     ;;
3964     mips)
3965         check_64bit mips mips64 '_MIPS_SIM > 1'
3966         spic=$shared
3967     ;;
3968     parisc)
3969         check_64bit parisc parisc64 'sizeof(void *) > 4'
3970         spic=$shared
3971     ;;
3972     ppc)
3973         check_64bit ppc ppc64 'sizeof(void *) > 4'
3974         spic=$shared
3975     ;;
3976     s390)
3977         check_64bit s390 s390x 'sizeof(void *) > 4'
3978         spic=$shared
3979     ;;
3980     sparc)
3981         check_64bit sparc sparc64 'sizeof(void *) > 4'
3982         spic=$shared
3983     ;;
3984     x86)
3985         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3986         # Treat x32 as x64 for now. Note it also needs spic=$shared
3987         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3988             subarch=x86_64
3989         if test "$subarch" = "x86_64"; then
3990             spic=$shared
3991         fi
3992     ;;
3993     ppc)
3994         check_cc <<EOF && subarch="ppc64"
3995         int test[(int)sizeof(char*) - 7];
3996 EOF
3997     ;;
3998 esac
3999
4000 enable $subarch
4001 enabled spic && enable_weak pic
4002
4003 # OS specific
4004 case $target_os in
4005     aix)
4006         SHFLAGS=-shared
4007         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4008         enabled shared && add_ldflags -Wl,-brtl
4009         ;;
4010     android)
4011         disable symver
4012         enable section_data_rel_ro
4013         SLIB_INSTALL_NAME='$(SLIBNAME)'
4014         SLIB_INSTALL_LINKS=
4015         # soname not set on purpose
4016         SHFLAGS=-shared
4017         ;;
4018     haiku)
4019         prefix_default="/boot/common"
4020         network_extralibs="-lnetwork"
4021         host_libs=
4022         ;;
4023     sunos)
4024         SHFLAGS='-shared -Wl,-h,$$(@F)'
4025         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4026         network_extralibs="-lsocket -lnsl"
4027         # When using suncc to build, the Solaris linker will mark
4028         # an executable with each instruction set encountered by
4029         # the Solaris assembler.  As our libraries contain their own
4030         # guards for processor-specific code, instead suppress
4031         # generation of the HWCAPS ELF section on Solaris x86 only.
4032         enabled_all suncc x86 &&
4033             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4034             add_ldflags -Wl,-M,mapfile
4035         nm_default='nm -P -g'
4036         ;;
4037     netbsd)
4038         disable symver
4039         oss_indev_extralibs="-lossaudio"
4040         oss_outdev_extralibs="-lossaudio"
4041         enabled gcc || check_ldflags -Wl,-zmuldefs
4042         ;;
4043     openbsd|bitrig)
4044         disable symver
4045         SHFLAGS='-shared'
4046         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4047         SLIB_INSTALL_LINKS=
4048         oss_indev_extralibs="-lossaudio"
4049         oss_outdev_extralibs="-lossaudio"
4050         ;;
4051     dragonfly)
4052         disable symver
4053         ;;
4054     freebsd)
4055         ;;
4056     bsd/os)
4057         add_extralibs -lpoll -lgnugetopt
4058         strip="strip -d"
4059         ;;
4060     darwin)
4061         enabled ppc && add_asflags -force_cpusubtype_ALL
4062         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4063         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4064         strip="${strip} -x"
4065         add_ldflags -Wl,-dynamic,-search_paths_first
4066         SLIBSUF=".dylib"
4067         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4068         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4069         objformat="macho"
4070         enabled x86_64 && objformat="macho64"
4071         enabled_any pic shared ||
4072             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4073         ;;
4074     mingw32*)
4075         if test $target_os = "mingw32ce"; then
4076             disable network
4077         else
4078             target_os=mingw32
4079         fi
4080         LIBTARGET=i386
4081         if enabled x86_64; then
4082             LIBTARGET="i386:x86-64"
4083         elif enabled arm; then
4084             LIBTARGET=arm-wince
4085         fi
4086         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4087         check_ldflags -Wl,--nxcompat
4088         check_ldflags -Wl,--dynamicbase
4089         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4090         shlibdir_default="$bindir_default"
4091         SLIBPREF=""
4092         SLIBSUF=".dll"
4093         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4094         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4095         dlltool="${cross_prefix}dlltool"
4096         if check_cmd lib.exe -list; then
4097             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4098             if enabled x86_64; then
4099                 LIBTARGET=x64
4100             fi
4101         elif check_cmd $dlltool --version; then
4102             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4103         fi
4104         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4105         SLIB_INSTALL_LINKS=
4106         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4107         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4108         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4109         objformat="win32"
4110         ranlib=:
4111         enable dos_paths
4112         ;;
4113     win32|win64)
4114         disable symver
4115         if enabled shared; then
4116             # Link to the import library instead of the normal static library
4117             # for shared libs.
4118             LD_LIB='%.lib'
4119             # Cannot build both shared and static libs with MSVC or icl.
4120             disable static
4121         fi
4122         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4123         shlibdir_default="$bindir_default"
4124         SLIBPREF=""
4125         SLIBSUF=".dll"
4126         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4127         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4128         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4129         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4130         SLIB_INSTALL_LINKS=
4131         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4132         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4133         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4134         objformat="win32"
4135         ranlib=:
4136         enable dos_paths
4137         ;;
4138     cygwin*)
4139         target_os=cygwin
4140         shlibdir_default="$bindir_default"
4141         SLIBPREF="cyg"
4142         SLIBSUF=".dll"
4143         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4144         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4145         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4146         SLIB_INSTALL_LINKS=
4147         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4148         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4149         objformat="win32"
4150         enable dos_paths
4151         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4152         ;;
4153     *-dos|freedos|opendos)
4154         network_extralibs="-lsocket"
4155         objformat="coff"
4156         enable dos_paths
4157         add_cppflags -U__STRICT_ANSI__
4158         ;;
4159     linux)
4160         enable dv1394
4161         enable section_data_rel_ro
4162         ;;
4163     irix*)
4164         target_os=irix
4165         ranlib="echo ignoring ranlib"
4166         ;;
4167     os/2*)
4168         strip="lxlite -CS"
4169         ln_s="cp -f"
4170         objformat="aout"
4171         add_cppflags -D_GNU_SOURCE
4172         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4173         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4174         LIBSUF="_s.a"
4175         SLIBPREF=""
4176         SLIBSUF=".dll"
4177         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4178         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4179         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4180             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4181             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4182             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4183             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4184             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4185         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4186             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4187         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4188         enable dos_paths
4189         enable_weak os2threads
4190         ;;
4191     gnu/kfreebsd)
4192         add_cppflags -D_BSD_SOURCE
4193         ;;
4194     gnu)
4195         ;;
4196     qnx)
4197         add_cppflags -D_QNX_SOURCE
4198         network_extralibs="-lsocket"
4199         ;;
4200     symbian)
4201         SLIBSUF=".dll"
4202         enable dos_paths
4203         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4204         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4205         add_ldflags -Wl,--target1-abs,--no-undefined \
4206                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4207                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4208         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4209                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4210                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4211         ;;
4212     osf1)
4213         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4214         ;;
4215     minix)
4216         ;;
4217     plan9)
4218         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4219                      -D_REENTRANT_SOURCE        \
4220                      -D_RESEARCH_SOURCE         \
4221                      -DFD_SETSIZE=96            \
4222                      -DHAVE_SOCK_OPTS
4223         add_compat strtod.o strtod=avpriv_strtod
4224         network_extralibs='-lbsd'
4225         exeobjs=compat/plan9/main.o
4226         disable ffserver
4227         cp_f='cp'
4228         ;;
4229     none)
4230         ;;
4231     *)
4232         die "Unknown OS '$target_os'."
4233         ;;
4234 esac
4235
4236 # determine libc flavour
4237
4238 probe_libc(){
4239     pfx=$1
4240     pfx_no_=${pfx%_}
4241     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4242     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4243         eval ${pfx}libc_type=uclibc
4244         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4245     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4246         eval ${pfx}libc_type=glibc
4247         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4248     # MinGW headers can be installed on Cygwin, so check for newlib first.
4249     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4250         eval ${pfx}libc_type=newlib
4251         add_${pfx}cppflags -U__STRICT_ANSI__
4252     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4253     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4254         eval ${pfx}libc_type=mingw64
4255         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4256             add_compat msvcrt/snprintf.o
4257             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4258         fi
4259         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4260         eval test \$${pfx_no_}cc_type = "gcc" &&
4261             add_${pfx}cppflags -D__printf__=__gnu_printf__
4262     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4263          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4264         eval ${pfx}libc_type=mingw32
4265         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4266             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4267             die "ERROR: MinGW32 runtime version must be >= 3.15."
4268         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4269         eval test \$${pfx_no_}cc_type = "gcc" &&
4270             add_${pfx}cppflags -D__printf__=__gnu_printf__
4271     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4272         eval ${pfx}libc_type=msvcrt
4273         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4274         # 0x601 by default unless something else is set by the user.
4275         # This can easily lead to us detecting functions only present
4276         # in such new versions and producing binaries requiring windows 7.0.
4277         # Therefore explicitly set the default to XP unless the user has
4278         # set something else on the command line.
4279         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4280             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4281     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4282         eval ${pfx}libc_type=klibc
4283     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4284         eval ${pfx}libc_type=bionic
4285     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4286         eval ${pfx}libc_type=solaris
4287         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4288     fi
4289     check_${pfx}cc <<EOF
4290 #include <time.h>
4291 void *v = localtime_r;
4292 EOF
4293 test "$?" != 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
4294 #include <time.h>
4295 void *v = localtime_r;
4296 EOF
4297
4298 }
4299
4300 probe_libc
4301 test -n "$libc_type" && enable libc_$libc_type
4302 probe_libc host_
4303 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4304
4305 case $libc_type in
4306     bionic)
4307         add_compat strtod.o strtod=avpriv_strtod
4308         ;;
4309     msvcrt)
4310         add_compat strtod.o strtod=avpriv_strtod
4311         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4312                                      _snprintf=avpriv_snprintf  \
4313                                      vsnprintf=avpriv_vsnprintf
4314         ;;
4315 esac
4316
4317 # hacks for compiler/libc/os combinations
4318
4319 if enabled_all tms470 libc_glibc; then
4320     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4321     add_cppflags -D__USER_LABEL_PREFIX__=
4322     add_cppflags -D__builtin_memset=memset
4323     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4324     add_cflags   -pds=48    # incompatible redefinition of macro
4325 fi
4326
4327 if enabled_all ccc libc_glibc; then
4328     add_ldflags -Wl,-z,now  # calls to libots crash without this
4329 fi
4330
4331 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4332     add_cppflags '-I\$(SRC_PATH)/compat/float'
4333
4334 esc(){
4335     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4336 }
4337
4338 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4339
4340 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4341
4342 set_default libdir
4343 : ${shlibdir_default:="$libdir"}
4344
4345 set_default $PATHS_LIST
4346 set_default nm
4347
4348 # we need to build at least one lib type
4349 if ! enabled_any static shared; then
4350     cat <<EOF
4351 At least one library type must be built.
4352 Specify --enable-static to build the static libraries or --enable-shared to
4353 build the shared libraries as well. To only build the shared libraries specify
4354 --disable-static in addition to --enable-shared.
4355 EOF
4356     exit 1;
4357 fi
4358
4359 die_license_disabled() {
4360     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4361 }
4362
4363 die_license_disabled_gpl() {
4364     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4365 }
4366
4367 die_license_disabled gpl frei0r
4368 die_license_disabled gpl libcdio
4369 die_license_disabled gpl libsmbclient
4370 die_license_disabled gpl libutvideo
4371 die_license_disabled gpl libvidstab
4372 die_license_disabled gpl libx264
4373 die_license_disabled gpl libx265
4374 die_license_disabled gpl libxavs
4375 die_license_disabled gpl libxvid
4376 die_license_disabled gpl libzvbi
4377 die_license_disabled gpl x11grab
4378
4379 die_license_disabled nonfree libaacplus
4380 die_license_disabled nonfree libfaac
4381 die_license_disabled nonfree nvenc
4382 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4383 enabled gpl && die_license_disabled_gpl nonfree openssl
4384
4385 die_license_disabled version3 libopencore_amrnb
4386 die_license_disabled version3 libopencore_amrwb
4387 die_license_disabled version3 libsmbclient
4388 die_license_disabled version3 libvo_aacenc
4389 die_license_disabled version3 libvo_amrwbenc
4390
4391 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4392
4393 disabled optimizations || check_cflags -fomit-frame-pointer
4394
4395 enable_weak_pic() {
4396     disabled pic && return
4397     enable pic
4398     add_cppflags -DPIC
4399     case "$target_os" in
4400     mingw*|cygwin*)
4401         ;;
4402     *)
4403         add_cflags -fPIC
4404         ;;
4405     esac
4406     add_asflags  -fPIC
4407 }
4408
4409 enabled pic && enable_weak_pic
4410
4411 check_cc <<EOF || die "Symbol mangling check failed."
4412 int ff_extern;
4413 EOF
4414 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4415 extern_prefix=${sym%%ff_extern*}
4416
4417 check_cc <<EOF && enable_weak inline_asm
4418 void foo(void) { __asm__ volatile ("" ::); }
4419 EOF
4420
4421 _restrict=
4422 for restrict_keyword in restrict __restrict__ __restrict; do
4423     check_cc <<EOF && _restrict=$restrict_keyword && break
4424 void foo(char * $restrict_keyword p);
4425 EOF
4426 done
4427
4428 check_cc <<EOF && enable pragma_deprecated
4429 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4430 EOF
4431
4432 check_cc <<EOF && enable attribute_packed
4433 struct { int x; } __attribute__((packed)) x;
4434 EOF
4435
4436 check_cc <<EOF && enable attribute_may_alias
4437 union { int x; } __attribute__((may_alias)) x;
4438 EOF
4439
4440 check_cc <<EOF || die "endian test failed"
4441 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4442 EOF
4443 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4444
4445 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4446     if ! enabled bigendian && enabled altivec ;then
4447         enable vsx
4448     fi
4449 fi
4450
4451 check_gas() {
4452     log "check_gas using '$as' as AS"
4453     # :vararg is used on aarch64, arm and ppc altivec
4454     check_as <<EOF || return 1
4455 .macro m n, y:vararg=0
4456 \n: .int \y
4457 .endm
4458 m x
4459 EOF
4460     # .altmacro is only used in arm asm
4461     ! enabled arm || check_as <<EOF || return 1
4462 .altmacro
4463 EOF
4464     enable gnu_as
4465     return 0
4466 }
4467
4468 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4469     nogas=:
4470     enabled_any arm aarch64 && nogas=die
4471     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4472     as_noop=-v
4473
4474     case $as_type in
4475         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4476         gcc)  gaspp_as_type=gas ;;
4477         *)    gaspp_as_type=$as_type ;;
4478     esac
4479
4480     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4481
4482     test "${as#*gas-preprocessor.pl}" != "$as" ||
4483     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4484         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4485
4486     if ! check_gas ; then
4487         as=${gas:=$as}
4488         check_gas || \
4489             $nogas "GNU assembler not found, install/update gas-preprocessor"
4490     fi
4491
4492     check_as <<EOF && enable as_func
4493 .func test
4494 .endfunc
4495 EOF
4496 fi
4497
4498 check_inline_asm inline_asm_labels '"1:\n"'
4499
4500 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4501
4502 if enabled aarch64; then
4503     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4504     # internal assembler in clang 3.3 does not support this instruction
4505     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4506     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4507
4508     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4509
4510 elif enabled alpha; then
4511
4512     check_cflags -mieee
4513
4514 elif enabled arm; then
4515
4516     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4517 float func(float a, float b){ return a+b; }
4518 EOF
4519
4520     enabled thumb && check_cflags -mthumb || check_cflags -marm
4521
4522     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4523         enable vfp_args
4524     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4525         case "${cross_prefix:-$cc}" in
4526             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4527             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4528 __asm__ (".eabi_attribute 28, 1");
4529 int main(void) { return 0; }
4530 EOF
4531         esac
4532         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4533     fi
4534
4535     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4536     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4537     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4538     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4539     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4540     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4541     enabled setend  && check_insn setend  'setend be'
4542
4543     [ $target_os = linux ] || [ $target_os = android ] ||
4544         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4545             $ARCH_EXT_LIST_ARM
4546
4547     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4548
4549     check_as <<EOF && enable as_dn_directive
4550 ra .dn d0.i16
4551 .unreq ra
4552 EOF
4553
4554     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4555
4556 elif enabled mips; then
4557
4558     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4559     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4560      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4561     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4562      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4563     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4564      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4565     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4566      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4567
4568 elif enabled parisc; then
4569
4570     if enabled gcc; then
4571         case $($cc -dumpversion) in
4572             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4573         esac
4574     fi
4575
4576 elif enabled ppc; then
4577
4578     enable local_aligned_8 local_aligned_16 local_aligned_32
4579
4580     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4581     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4582     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4583     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4584
4585     # AltiVec flags: The FSF version of GCC differs from the Apple version
4586     if enabled altivec; then
4587         check_cflags -maltivec -mabi=altivec &&
4588         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4589         check_cflags -faltivec
4590
4591         # check if our compiler supports Motorola AltiVec C API
4592         check_cc <<EOF || disable altivec
4593 $inc_altivec_h
4594 int main(void) {
4595     vector signed int v1 = (vector signed int) { 0 };
4596     vector signed int v2 = (vector signed int) { 1 };
4597     v1 = vec_add(v1, v2);
4598     return 0;
4599 }
4600 EOF
4601
4602         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4603     fi
4604
4605     if enabled vsx; then
4606         check_cflags -mvsx
4607     fi
4608 elif enabled x86; then
4609
4610     check_builtin rdtsc    intrin.h   "__rdtsc()"
4611     check_builtin mm_empty mmintrin.h "_mm_empty()"
4612
4613     enable local_aligned_8 local_aligned_16 local_aligned_32
4614
4615     # check whether EBP is available on x86
4616     # As 'i' is stored on the stack, this program will crash
4617     # if the base pointer is used to access it because the
4618     # base pointer is cleared in the inline assembly code.
4619     check_exec_crash <<EOF && enable ebp_available
4620 volatile int i=0;
4621 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4622 return i;
4623 EOF
4624
4625     # check whether EBX is available on x86
4626     check_inline_asm ebx_available '""::"b"(0)' &&
4627         check_inline_asm ebx_available '"":::"%ebx"'
4628
4629     # check whether xmm clobbers are supported
4630     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4631
4632     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4633         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4634
4635     # check whether binutils is new enough to compile SSSE3/MMXEXT
4636     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4637     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4638
4639     if ! disabled_any asm mmx yasm; then
4640         if check_cmd $yasmexe --version; then
4641             enabled x86_64 && yasm_extra="-m amd64"
4642             yasm_debug="-g dwarf2"
4643         elif check_cmd nasm -v; then
4644             yasmexe=nasm
4645             yasm_debug="-g -F dwarf"
4646             if enabled x86_64; then
4647                 case "$objformat" in
4648                     elf)   objformat=elf64 ;;
4649                     win32) objformat=win64 ;;
4650                 esac
4651             fi
4652         fi
4653
4654         YASMFLAGS="-f $objformat $yasm_extra"
4655         enabled pic               && append YASMFLAGS "-DPIC"
4656         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4657         case "$objformat" in
4658             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4659         esac
4660
4661         check_yasm "movbe ecx, [5]" && enable yasm ||
4662             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4663         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4664         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4665         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4666         check_yasm "CPU amdnop" || disable cpunop
4667     fi
4668
4669     case "$cpu" in
4670         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4671             disable fast_clz
4672         ;;
4673     esac
4674
4675 fi
4676
4677 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4678
4679 check_ldflags -Wl,--as-needed
4680 check_ldflags -Wl,-z,noexecstack
4681
4682 if check_func dlopen; then
4683     ldl=
4684 elif check_func dlopen -ldl; then
4685     ldl=-ldl
4686 fi
4687
4688 frei0r_filter_extralibs='$ldl'
4689 frei0r_src_filter_extralibs='$ldl'
4690 ladspa_filter_extralibs='$ldl'
4691 nvenc_encoder_extralibs='$ldl'
4692
4693 if ! disabled network; then
4694     check_func getaddrinfo $network_extralibs
4695     check_func getservbyport $network_extralibs
4696     check_func inet_aton $network_extralibs
4697
4698     check_type netdb.h "struct addrinfo"
4699     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4700     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4701     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4702     check_type poll.h "struct pollfd"
4703     check_type netinet/sctp.h "struct sctp_event_subscribe"
4704     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4705     check_type netinet/in.h "struct sockaddr_in6"
4706     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4707     check_type "sys/types.h sys/socket.h" socklen_t
4708
4709     # Prefer arpa/inet.h over winsock2
4710     if check_header arpa/inet.h ; then
4711         check_func closesocket
4712     elif check_header winsock2.h ; then
4713         check_func_headers winsock2.h closesocket -lws2 &&
4714             network_extralibs="-lws2" ||
4715         { check_func_headers winsock2.h closesocket -lws2_32 &&
4716             network_extralibs="-lws2_32"; } || disable winsock2_h network
4717         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4718
4719         check_type ws2tcpip.h socklen_t
4720         check_type ws2tcpip.h "struct addrinfo"
4721         check_type ws2tcpip.h "struct group_source_req"
4722         check_type ws2tcpip.h "struct ip_mreq_source"
4723         check_type ws2tcpip.h "struct ipv6_mreq"
4724         check_type winsock2.h "struct pollfd"
4725         check_struct winsock2.h "struct sockaddr" sa_len
4726         check_type ws2tcpip.h "struct sockaddr_in6"
4727         check_type ws2tcpip.h "struct sockaddr_storage"
4728     else
4729         disable network
4730     fi
4731 fi
4732
4733 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4734 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4735 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4736 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4737 check_builtin sarestart signal.h "SA_RESTART"
4738 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4739
4740 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4741 check_func  ${malloc_prefix}memalign            && enable memalign
4742 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4743
4744 check_func  access
4745 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4746 check_func  fcntl
4747 check_func  fork
4748 check_func  gethrtime
4749 check_func  getopt
4750 check_func  getrusage
4751 check_func  gettimeofday
4752 check_func  gmtime_r
4753 check_func  isatty
4754 check_func  localtime_r
4755 check_func  mach_absolute_time
4756 check_func  mkstemp
4757 check_func  mmap
4758 check_func  mprotect
4759 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4760 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4761 check_func  sched_getaffinity
4762 check_func  setrlimit
4763 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4764 check_func  strerror_r
4765 check_func  sysconf
4766 check_func  sysctl
4767 check_func  usleep
4768
4769 check_func_headers conio.h kbhit
4770 check_func_headers io.h setmode
4771 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4772 check_func_headers stdlib.h getenv
4773
4774 check_func_headers windows.h CoTaskMemFree -lole32
4775 check_func_headers windows.h GetProcessAffinityMask
4776 check_func_headers windows.h GetProcessTimes
4777 check_func_headers windows.h GetSystemTimeAsFileTime
4778 check_func_headers windows.h MapViewOfFile
4779 check_func_headers windows.h PeekNamedPipe
4780 check_func_headers windows.h SetConsoleTextAttribute
4781 check_func_headers windows.h Sleep
4782 check_func_headers windows.h VirtualAlloc
4783 check_struct windows.h "CONDITION_VARIABLE" Ptr
4784 check_func_headers glob.h glob
4785 enabled xlib &&
4786     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4787
4788 check_header direct.h
4789 check_header dlfcn.h
4790 check_header dxva.h
4791 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4792 check_header io.h
4793 check_header libcrystalhd/libcrystalhd_if.h
4794 check_header mach/mach_time.h
4795 check_header malloc.h
4796 check_header net/udplite.h
4797 check_header poll.h
4798 check_header sys/mman.h
4799 check_header sys/param.h
4800 check_header sys/resource.h
4801 check_header sys/select.h
4802 check_header sys/time.h
4803 check_header sys/un.h
4804 check_header termios.h
4805 check_header unistd.h
4806 check_header vdpau/vdpau.h
4807 check_header vdpau/vdpau_x11.h
4808 check_header VideoDecodeAcceleration/VDADecoder.h
4809 check_header windows.h
4810 check_header X11/extensions/XvMClib.h
4811 check_header asm/types.h
4812
4813 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4814 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4815 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4816
4817 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4818
4819 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4820
4821 if ! disabled w32threads && ! enabled pthreads; then
4822     check_func_headers "windows.h process.h" _beginthreadex &&
4823         enable w32threads || disable w32threads
4824 fi
4825
4826 # check for some common methods of building with pthread support
4827 # do this before the optional library checks as some of them require pthreads
4828 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4829     enable pthreads
4830     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4831         add_cflags -pthread
4832         add_extralibs -pthread
4833     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4834         add_cflags -pthreads
4835         add_extralibs -pthreads
4836     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4837         add_cflags -ldl -pthread
4838         add_extralibs -ldl -pthread
4839     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4840         add_extralibs -lpthreadGC2
4841     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4842         :
4843     elif ! check_func pthread_join && ! check_func pthread_create; then
4844         disable pthreads
4845     fi
4846     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4847 fi
4848
4849
4850 if enabled pthreads; then
4851   check_func pthread_cancel
4852 fi
4853
4854 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4855 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4856 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4857
4858 check_lib math.h sin -lm && LIBM="-lm"
4859 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4860
4861 atan2f_args=2
4862 ldexpf_args=2
4863 powf_args=2
4864
4865 for func in $MATH_FUNCS; do
4866     eval check_mathfunc $func \${${func}_args:-1}
4867 done
4868
4869 # these are off by default, so fail if requested and not available
4870 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4871 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4872                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4873                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4874 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4875 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4876 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4877 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4878 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4879 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4880 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4881 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4882 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4883 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4884                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4885                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4886 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4887 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4888 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4889 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"
4890 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4891 enabled fontconfig        && enable libfontconfig
4892 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4893 enabled libfreetype       && require_libfreetype
4894 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4895 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4896 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4897                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4898                                done || die "ERROR: libgsm not found"; }
4899 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4900 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4901 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4902 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4903 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4904 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4905 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4906 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4907 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
4908                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4909                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4910                                die "ERROR: libopenjpeg not found"; }
4911 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4912 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4913 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4914 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4915 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4916 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4917 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
4918                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
4919 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4920 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4921 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4922 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4923     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4924     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4925 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4926 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4927                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4928                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4929 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4930 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4931 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4932 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4933 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4934 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4935 enabled libvpx            && {
4936     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4937                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4938     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 ||
4939                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4940     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4941     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; } }
4942 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4943 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
4944 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
4945                                { require libx264 x264.h x264_encoder_encode -lx264 &&
4946                                  warn "using libx264 without pkg-config"; } } &&
4947                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4948                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4949 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4950                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4951                                die "ERROR: libx265 version must be >= 17."; }
4952 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4953 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4954 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4955 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4956 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
4957                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
4958 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4959                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4960                                die "ERROR: openal not found"; } &&
4961                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4962                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4963 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4964                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4965                                die "ERROR: opencl not found"; } &&
4966                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4967                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4968                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4969 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4970                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4971                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4972                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4973                                die "ERROR: opengl not found."
4974                              }
4975 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4976                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4977                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4978                                die "ERROR: openssl not found"; }
4979 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4980
4981 if enabled gnutls; then
4982     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4983     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4984 fi
4985
4986 # libdc1394 check
4987 if enabled libdc1394; then
4988     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4989         enable libdc1394_2; } ||
4990     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4991         enable libdc1394_1; } ||
4992     die "ERROR: No version of libdc1394 found "
4993 fi
4994 if ! disabled sdl; then
4995     SDL_CONFIG="${cross_prefix}sdl-config"
4996     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4997         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4998         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4999         enable sdl
5000     else
5001         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5002             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5003             sdl_libs=$("${SDL_CONFIG}" --libs)
5004             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5005             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5006             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5007             enable sdl
5008         elif enabled sdl ; then
5009             die "ERROR: SDL not found"
5010         else
5011             disable sdl
5012         fi
5013     fi
5014 fi
5015 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5016
5017 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5018 enabled makeinfo && (makeinfo --version | \
5019                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
5020     && enable makeinfo_html || disable makeinfo_html
5021 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5022 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5023 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5024 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5025
5026 check_header linux/fb.h
5027 check_header linux/videodev.h
5028 check_header linux/videodev2.h
5029 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5030
5031 check_header sys/videoio.h
5032 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5033
5034 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5035 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5036 # w32api 3.12 had it defined wrong
5037 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5038
5039 check_type "dshow.h" IBaseFilter
5040
5041 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5042 { check_header dev/bktr/ioctl_meteor.h &&
5043   check_header dev/bktr/ioctl_bt848.h; } ||
5044 { check_header machine/ioctl_meteor.h &&
5045   check_header machine/ioctl_bt848.h; } ||
5046 { check_header dev/video/meteor/ioctl_meteor.h &&
5047   check_header dev/video/bktr/ioctl_bt848.h; } ||
5048 check_header dev/ic/bt8xx.h
5049
5050 check_header sndio.h
5051 if check_struct sys/soundcard.h audio_buf_info bytes; then
5052     enable_safe sys/soundcard.h
5053 else
5054     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5055     #include <sys/soundcard.h>
5056     audio_buf_info abc;
5057 EOF
5058 fi
5059 check_header soundcard.h
5060
5061 enabled_any alsa_indev alsa_outdev &&
5062     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5063
5064 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5065     check_func jack_port_get_latency_range -ljack
5066
5067 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5068
5069 if enabled libcdio; then
5070     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5071     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5072     die "ERROR: libcdio-paranoia not found"
5073 fi
5074
5075 enabled xlib &&
5076     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5077
5078 if ! disabled libxcb; then
5079     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5080         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5081     } && disable x11grab && enable libxcb
5082
5083 if enabled libxcb; then
5084     disabled libxcb_shm || {
5085         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5086             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5087         } && check_header sys/shm.h && enable libxcb_shm; }
5088
5089     disabled libxcb_xfixes || {
5090         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5091             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5092         } && enable libxcb_xfixes; }
5093
5094     disabled libxcb_shape || {
5095         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5096             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5097         } && enable libxcb_shape; }
5098
5099     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5100     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5101 fi
5102 fi
5103
5104 if enabled x11grab; then
5105     enabled xlib || die "ERROR: Xlib not found"
5106     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5107     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5108 fi
5109
5110 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5111
5112 enabled dxva2api_h &&
5113     check_cc <<EOF && enable dxva2api_cobj
5114 #define _WIN32_WINNT 0x0600
5115 #define COBJMACROS
5116 #include <windows.h>
5117 #include <d3d9.h>
5118 #include <dxva2api.h>
5119 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5120 EOF
5121
5122 enabled vaapi &&
5123     check_lib va/va.h vaInitialize -lva ||
5124     disable vaapi
5125
5126 enabled vdpau &&
5127     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5128     disable vdpau
5129
5130 enabled vdpau && enabled xlib &&
5131     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5132     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5133     enable vdpau_x11
5134
5135 # Funny iconv installations are not unusual, so check it after all flags have been set
5136 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5137
5138 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5139
5140 # add some useful compiler flags if supported
5141 check_cflags -Wdeclaration-after-statement
5142 check_cflags -Wall
5143 check_cflags -Wdisabled-optimization
5144 check_cflags -Wpointer-arith
5145 check_cflags -Wredundant-decls
5146 check_cflags -Wwrite-strings
5147 check_cflags -Wtype-limits
5148 check_cflags -Wundef
5149 check_cflags -Wmissing-prototypes
5150 check_cflags -Wno-pointer-to-int-cast
5151 check_cflags -Wstrict-prototypes
5152 check_cflags -Wempty-body
5153 enabled extra_warnings && check_cflags -Winline
5154
5155 check_disable_warning(){
5156     warning_flag=-W${1#-Wno-}
5157     test_cflags $warning_flag && add_cflags $1
5158 }
5159
5160 check_disable_warning -Wno-parentheses
5161 check_disable_warning -Wno-switch
5162 check_disable_warning -Wno-format-zero-length
5163 check_disable_warning -Wno-pointer-sign
5164
5165 # add some linker flags
5166 check_ldflags -Wl,--warn-common
5167 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5168 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5169 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5170
5171 # add some strip flags
5172 # -wN '..@*' is more selective than -x, but not available everywhere.
5173 check_stripflags -wN \'..@*\' || check_stripflags -x
5174
5175 enabled neon_clobber_test &&
5176     check_ldflags -Wl,--wrap,avcodec_open2              \
5177                   -Wl,--wrap,avcodec_decode_audio4      \
5178                   -Wl,--wrap,avcodec_decode_video2      \
5179                   -Wl,--wrap,avcodec_decode_subtitle2   \
5180                   -Wl,--wrap,avcodec_encode_audio2      \
5181                   -Wl,--wrap,avcodec_encode_video2      \
5182                   -Wl,--wrap,avcodec_encode_subtitle    \
5183                   -Wl,--wrap,swr_convert                \
5184                   -Wl,--wrap,avresample_convert ||
5185     disable neon_clobber_test
5186
5187 enabled xmm_clobber_test &&
5188     check_ldflags -Wl,--wrap,avcodec_open2              \
5189                   -Wl,--wrap,avcodec_decode_audio4      \
5190                   -Wl,--wrap,avcodec_decode_video2      \
5191                   -Wl,--wrap,avcodec_decode_subtitle2   \
5192                   -Wl,--wrap,avcodec_encode_audio2      \
5193                   -Wl,--wrap,avcodec_encode_video       \
5194                   -Wl,--wrap,avcodec_encode_video2      \
5195                   -Wl,--wrap,avcodec_encode_subtitle    \
5196                   -Wl,--wrap,swr_convert                \
5197                   -Wl,--wrap,avresample_convert         \
5198                   -Wl,--wrap,sws_scale ||
5199     disable xmm_clobber_test
5200
5201 echo "X{};" > $TMPV
5202 if test_ldflags -Wl,--version-script,$TMPV; then
5203     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5204     check_cc <<EOF && enable symver_asm_label
5205 void ff_foo(void) __asm__ ("av_foo@VERSION");
5206 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5207 EOF
5208     check_cc <<EOF && enable symver_gnu_asm
5209 __asm__(".symver ff_foo,av_foo@VERSION");
5210 void ff_foo(void) {}
5211 EOF
5212 fi
5213
5214 if [ -z "$optflags" ]; then
5215     if enabled small; then
5216         optflags=$cflags_size
5217     elif enabled optimizations; then
5218         optflags=$cflags_speed
5219     else
5220         optflags=$cflags_noopt
5221     fi
5222 fi
5223
5224 check_optflags(){
5225     check_cflags "$@"
5226     enabled lto && check_ldflags "$@"
5227 }
5228
5229
5230 if enabled lto; then
5231     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5232     check_cflags  -flto
5233     check_ldflags -flto $cpuflags
5234     disable inline_asm_direct_symbol_refs
5235 fi
5236
5237 check_optflags $optflags
5238 check_optflags -fno-math-errno
5239 check_optflags -fno-signed-zeros
5240
5241 enabled ftrapv && check_cflags -ftrapv
5242
5243 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5244 int x;
5245 EOF
5246
5247
5248 if enabled icc; then
5249     # Just warnings, no remarks
5250     check_cflags -w1
5251     # -wd: Disable following warnings
5252     # 144, 167, 556: -Wno-pointer-sign
5253     # 188: enumerated type mixed with another type
5254     # 1292: attribute "foo" ignored
5255     # 1419: external declaration in primary source file
5256     # 10006: ignoring unknown option -fno-signed-zeros
5257     # 10148: ignoring unknown option -Wno-parentheses
5258     # 10156: ignoring option '-W'; no argument required
5259     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5260     # 11030: Warning unknown option --as-needed
5261     # 10156: ignoring option '-export'; no argument required
5262     check_ldflags -wd10156,11030
5263     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5264     enable ebp_available
5265     # The test above does not test linking
5266     enabled lto && disable symver_asm_label
5267     if enabled x86_32; then
5268         icc_version=$($cc -dumpversion)
5269         test ${icc_version%%.*} -ge 11 &&
5270             check_cflags -falign-stack=maintain-16-byte ||
5271             disable aligned_stack
5272     fi
5273 elif enabled ccc; then
5274     # disable some annoying warnings
5275     add_cflags -msg_disable bitnotint
5276     add_cflags -msg_disable mixfuncvoid
5277     add_cflags -msg_disable nonstandcast
5278     add_cflags -msg_disable unsupieee
5279 elif enabled gcc; then
5280     check_optflags -fno-tree-vectorize
5281     check_cflags -Werror=format-security
5282     check_cflags -Werror=implicit-function-declaration
5283     check_cflags -Werror=missing-prototypes
5284     check_cflags -Werror=return-type
5285     check_cflags -Werror=vla
5286     check_cflags -Wformat
5287     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5288 elif enabled llvm_gcc; then
5289     check_cflags -mllvm -stack-alignment=16
5290 elif enabled clang; then
5291     check_cflags -mllvm -stack-alignment=16
5292     check_cflags -Qunused-arguments
5293     check_cflags -Werror=implicit-function-declaration
5294     check_cflags -Werror=missing-prototypes
5295     check_cflags -Werror=return-type
5296 elif enabled cparser; then
5297     add_cflags -Wno-missing-variable-declarations
5298     add_cflags -Wno-empty-statement
5299 elif enabled armcc; then
5300     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5301     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5302     # 2523: use of inline assembly is deprecated
5303     add_cflags -W${armcc_opt},--diag_suppress=2523
5304     add_cflags -W${armcc_opt},--diag_suppress=1207
5305     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5306     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5307     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5308     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5309 elif enabled tms470; then
5310     add_cflags -pds=824 -pds=837
5311     disable inline_asm
5312 elif enabled pathscale; then
5313     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5314 elif enabled_any msvc icl; then
5315     enabled x86_32 && disable aligned_stack
5316     enabled_all x86_32 debug && add_cflags -Oy-
5317     enabled debug && add_ldflags -debug
5318     enable pragma_deprecated
5319     if enabled icl; then
5320         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5321         # (correctly) on icl 13.x.
5322         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5323             add_cflags -Qansi-alias
5324         # Some inline asm is not compilable in debug
5325         if enabled debug; then
5326             disable ebp_available
5327             disable ebx_available
5328         fi
5329     fi
5330     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5331     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5332 fi
5333
5334 case $as_type in
5335     clang)
5336         add_asflags -Qunused-arguments
5337     ;;
5338 esac
5339
5340 case $ld_type in
5341     clang)
5342         check_ldflags -Qunused-arguments
5343     ;;
5344 esac
5345
5346 case $target_os in
5347     osf1)
5348         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5349     ;;
5350     plan9)
5351         add_cppflags -Dmain=plan9_main
5352     ;;
5353 esac
5354
5355 enable frame_thread_encoder
5356
5357 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5358
5359 check_deps $CONFIG_LIST       \
5360            $CONFIG_EXTRA      \
5361            $HAVE_LIST         \
5362            $ALL_COMPONENTS    \
5363
5364 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"
5365
5366
5367 if test $target_os = "haiku"; then
5368     disable memalign
5369     disable posix_memalign
5370 fi
5371
5372 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5373     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5374     enable dxva2_lib
5375
5376 ! enabled_any memalign posix_memalign aligned_malloc &&
5377     enabled simd_align_16 && enable memalign_hack
5378
5379 # add_dep lib dep
5380 # -> enable ${lib}_deps_${dep}
5381 # -> add $dep to ${lib}_deps only once
5382 add_dep() {
5383     lib=$1
5384     dep=$2
5385     enabled "${lib}_deps_${dep}" && return 0
5386     enable  "${lib}_deps_${dep}"
5387     prepend "${lib}_deps" $dep
5388 }
5389
5390 # merge deps lib components
5391 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5392 merge_deps() {
5393     lib=$1
5394     shift
5395     for comp in $*; do
5396         enabled $comp || continue
5397         eval "dep=\"\$${comp}_deps\""
5398         for d in $dep; do
5399             add_dep $lib $d
5400         done
5401     done
5402 }
5403
5404 merge_deps libavfilter $FILTER_LIST
5405
5406 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5407
5408 for thread in $THREADS_LIST; do
5409     if enabled $thread; then
5410         test -n "$thread_type" &&
5411             die "ERROR: Only one thread type must be selected." ||
5412             thread_type="$thread"
5413     fi
5414 done
5415
5416 enabled zlib && add_cppflags -DZLIB_CONST
5417
5418 # conditional library dependencies, in linking order
5419 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5420 enabled aresample_filter    && prepend avfilter_deps "swresample"
5421 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5422 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5423 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5424 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5425 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5426 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5427 enabled mp_filter           && prepend avfilter_deps "avcodec"
5428 enabled pan_filter          && prepend avfilter_deps "swresample"
5429 enabled pp_filter           && prepend avfilter_deps "postproc"
5430 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5431 enabled resample_filter && prepend avfilter_deps "avresample"
5432 enabled sab_filter          && prepend avfilter_deps "swscale"
5433 enabled scale_filter    && prepend avfilter_deps "swscale"
5434 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5435 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5436 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5437 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5438
5439 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5440
5441 enabled opus_decoder    && prepend avcodec_deps "swresample"
5442
5443 expand_deps(){
5444     lib_deps=${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"