ltconfig

查看局域网的信息,类似网上邻居的功能,例如查看哪台计算机在线等

  if test "$hardcode_direct" != no &&
     # If the only mechanism to avoid hardcoding is shlibpath_var, we
     # have to relink, otherwise we might link with an installed library
     # when we should be linking with a yet-to-be-installed one
     ## test "$hardcode_shlibpath_var" != no &&
     test "$hardcode_minus_L" != no; then
    # Linking always hardcodes the temporary library directory.
    hardcode_action=relink
  else
    # We can link without hardcoding, and we can hardcode nonexisting dirs.
    hardcode_action=immediate
  fi
else
  # We cannot hardcode anything, or else we can only hardcode existing
  # directories.
  hardcode_action=unsupported
fi
echo "$ac_t$hardcode_action" 1>&6

echo $ac_n "checking whether stripping libraries is possible... $ac_c" 1>&6
if test -n "$STRIP" && $STRIP -V 2>&1 | grep "GNU strip" >/dev/null; then
  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
  echo "${ac_t}yes" 1>&6
else
  echo "${ac_t}no" 1>&6
fi

reload_cmds='$LD$reload_flag -o $output$reload_objs'
test -z "$deplibs_check_method" && deplibs_check_method=unknown

# PORTME Fill in your ld.so characteristics
library_names_spec=
libname_spec='lib$name'
soname_spec=
postinstall_cmds=
postuninstall_cmds=
finish_cmds=
finish_eval=
shlibpath_var=
shlibpath_overrides_runpath=unknown
version_type=none
dynamic_linker="$host_os ld.so"
sys_lib_dlsearch_path_spec="/lib /usr/lib"
sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"

echo $ac_n "checking dynamic linker characteristics... $ac_c" 1>&6
case "$host_os" in
aix3*)
  version_type=linux
  library_names_spec='${libname}${release}.so$versuffix $libname.a'
  shlibpath_var=LIBPATH

  # AIX has no versioning support, so we append a major version to the name.
  soname_spec='${libname}${release}.so$major'
  ;;

aix4*)
  version_type=linux
  # AIX has no versioning support, so currently we can not hardcode correct
  # soname into executable. Probably we can add versioning support to
  # collect2, so additional links can be useful in future.
  # We preserve .a as extension for shared libraries though AIX4.2
  # and later linker supports .so
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.a'
  shlibpath_var=LIBPATH
  # the following is may be not correct. I need to check with the source of
  # this patch (its [e-mail]) (MM)
  hardcode_into_libs=all
  ;;

amigaos*)
  library_names_spec='$libname.ixlibrary $libname.a'
  # Create ${libname}_ixlibrary.a entries in /sys/libs.
  finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$echo "X$lib" | $Xsed -e '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $rm /sys/libs/${libname}_ixlibrary.a; $show "(cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a)"; (cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a) || exit 1; done'
  ;;

beos*)
  library_names_spec='${libname}.so'
  dynamic_linker="$host_os ld.so"
  shlibpath_var=LIBRARY_PATH
  lt_cv_dlopen="load_add_on"
  lt_cv_dlopen_libs=
  lt_cv_dlopen_self=yes
  ;;

bsdi4*)
  version_type=linux
  need_version=no
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
  shlibpath_var=LD_LIBRARY_PATH
  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
  export_dynamic_flag_spec=-rdynamic
  # the default ld.so.conf also contains /usr/contrib/lib and
  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
  # libtool to hard-code these into programs
  ;;

cygwin* | mingw*)
  version_type=windows
  need_version=no
  need_lib_prefix=no
  if test "$with_gcc" = yes; then
    library_names_spec='${libname}`echo ${release} | sed -e 's/[.]/-/g'`${versuffix}.dll'
  else
    library_names_spec='${libname}`echo ${release} | sed -e 's/[.]/-/g'`${versuffix}.dll $libname.lib'
  fi
  dynamic_linker='Win32 ld.exe'
  # FIXME: first we should search . and the directory the executable is in
  shlibpath_var=PATH
  lt_cv_dlopen="LoadLibrary"
  lt_cv_dlopen_libs=
  ;;

freebsd1*)
  dynamic_linker=no
  ;;

freebsd*)
  objformat=`test -x /usr/bin/objformat && /usr/bin/objformat || echo aout`
  version_type=freebsd-$objformat
  case "$version_type" in
    freebsd-elf*)
      library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so $libname.so'
      need_version=no
      need_lib_prefix=no
      ;;
    freebsd-*)
      library_names_spec='${libname}${release}.so$versuffix $libname.so$versuffix'
      need_version=yes
      ;;
  esac
  shlibpath_var=LD_LIBRARY_PATH
  case "$host_os" in
  freebsd2*)
    shlibpath_overrides_runpath=yes
    ;;
  freebsd3.[01]* | freebsdelf3.[01]*)
    shlibpath_overrides_runpath=yes
    hardcode_into_libs=yes
    ;;
  *) # from 3.2 on
    shlibpath_overrides_runpath=no
    hardcode_into_libs=yes
    ;;
  esac
  ;;

gnu*)
  version_type=linux
  need_lib_prefix=no
  need_version=no
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so${major} ${libname}.so'
  soname_spec='${libname}${release}.so$major'
  shlibpath_var=LD_LIBRARY_PATH
  hardcode_into_libs=yes
  ;;

hpux9* | hpux10* | hpux11*)
  # Give a soname corresponding to the major version so that dld.sl refuses to
  # link against other versions.
  dynamic_linker="$host_os dld.sl"
  version_type=sunos
  need_lib_prefix=no
  need_version=no
  shlibpath_var=SHLIB_PATH
  shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
  library_names_spec='${libname}${release}.sl$versuffix ${libname}${release}.sl$major $libname.sl'
  soname_spec='${libname}${release}.sl$major'
  # HP-UX runs *really* slowly unless shared libraries are mode 555.
  postinstall_cmds='chmod 555 $lib'
  ;;

irix5* | irix6*)
  version_type=irix
  need_lib_prefix=no
  need_version=no
  soname_spec='${libname}${release}.so$major'
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major ${libname}${release}.so $libname.so'
  case "$host_os" in
  irix5*)
    libsuff= shlibsuff=
    ;;
  *)
    case "$LD" in # libtool.m4 will add one of these switches to LD
    *-32|*"-32 ") libsuff= shlibsuff= libmagic=32-bit;;
    *-n32|*"-n32 ") libsuff=32 shlibsuff=N32 libmagic=N32;;
    *-64|*"-64 ") libsuff=64 shlibsuff=64 libmagic=64-bit;;
    *) libsuff= shlibsuff= libmagic=never-match;;
    esac
    ;;
  esac
  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
  shlibpath_overrides_runpath=no
  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
  ;;

# No shared lib support for Linux oldld, aout, or coff.
linux-gnuoldld* | linux-gnuaout* | linux-gnucoff*)
  dynamic_linker=no
  ;;

# This must be Linux ELF.
linux-gnu*)
  version_type=linux
  need_lib_prefix=no
  need_version=no
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
  shlibpath_var=LD_LIBRARY_PATH
  shlibpath_overrides_runpath=no
  # This implies no fast_install, which is unacceptable.
  # Some rework will be needed to allow for fast_install
  # before this can be enabled.
  hardcode_into_libs=yes

  # We used to test for /lib/ld.so.1 and disable shared libraries on
  # powerpc, because MkLinux only supported shared libraries with the
  # GNU dynamic linker.  Since this was broken with cross compilers,
  # most powerpc-linux boxes support dynamic linking these days and
  # people can always --disable-shared, the test was removed, and we
  # assume the GNU/Linux dynamic linker is in use.
  dynamic_linker='GNU/Linux ld.so'
  ;;

netbsd*)
  version_type=sunos
  if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
    library_names_spec='${libname}${release}.so$versuffix ${libname}.so$versuffix'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
    dynamic_linker='NetBSD (a.out) ld.so'
  else
    deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB shared object'
    file_magic_cmd=/usr/bin/file
    file_magic_test_file=`echo /usr/lib/libc.so*`
    library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major ${libname}${release}.so ${libname}.so'
    soname_spec='${libname}${release}.so$major'
    dynamic_linker='NetBSD ld.elf_so'
  fi
  shlibpath_var=LD_LIBRARY_PATH
  ;;

openbsd*)
  version_type=sunos
  if test "$with_gnu_ld" = yes; then
    need_lib_prefix=no
    need_version=no
  fi
  library_names_spec='${libname}${release}.so$versuffix ${libname}.so$versuffix'
  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
  shlibpath_var=LD_LIBRARY_PATH
  ;;

os2*)
  libname_spec='$name'
  need_lib_prefix=no
  library_names_spec='$libname.dll $libname.a'
  dynamic_linker='OS/2 ld.exe'
  shlibpath_var=LIBPATH
  ;;

osf3* | osf4* | osf5*)
  version_type=osf
  need_version=no
  soname_spec='${libname}${release}.so'
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so $libname.so'
  shlibpath_var=LD_LIBRARY_PATH
  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
  ;;

sco3.2v5*)
  version_type=osf
  soname_spec='${libname}${release}.so$major'
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  shlibpath_var=LD_LIBRARY_PATH
  ;;

solaris*)
  version_type=linux
  need_lib_prefix=no
  need_version=no
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  shlibpath_var=LD_LIBRARY_PATH
  shlibpath_overrides_runpath=yes
  hardcode_into_libs=yes
  # ldd complains unless libraries are executable
  postinstall_cmds='chmod +x $lib'
  ;;

sunos4*)
  version_type=sunos
  library_names_spec='${libname}${release}.so$versuffix ${libname}.so$versuffix'
  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
  shlibpath_var=LD_LIBRARY_PATH
  shlibpath_overrides_runpath=yes
  if test "$with_gnu_ld" = yes; then
    need_lib_prefix=no
  fi
  need_version=yes
  ;;

sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
  version_type=linux
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  shlibpath_var=LD_LIBRARY_PATH
  case "$host_vendor" in
    motorola)
      need_lib_prefix=no
      need_version=no
      shlibpath_overrides_runpath=no
      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
      ;;
  esac
  ;;

uts4*)
  version_type=linux
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  shlibpath_var=LD_LIBRARY_PATH
  ;;

dgux*)
  version_type=linux
  need_lib_prefix=no
  need_version=no
  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
  soname_spec='${libname}${release}.so$major'
  shlibpath_var=LD_LIBRARY_PATH
  ;;

sysv4*MP*)
  if test -d /usr/nec ;then
    version_type=linux
    library_names_spec='$libname.so.$versuffix $libname.so.$major $libname.so'
    soname_spec='$libname.so.$major'
    shlibpath_var=LD_LIBRARY_PATH
  fi
  ;;

*)
  dynamic_linker=no
  ;;
esac
echo "$ac_t$dynamic_linker" 1>&6
test "$dynamic_linker" = no && can_build_shared=no

# Check for command to grab the raw symbol name followed by C symbol from nm.
echo $ac_n "checking command to parse $NM output... $ac_c" 1>&6

# These are sane defaults that work on at least a few old systems.
# [They come from Ultrix.  What could be older than Ultrix?!! ;)]

# Character class describing NM global symbol codes.
symcode='[BCDEGRST]'

# Regexp to match symbols that can be accessed directly from C.
sympat='\([_A-Za-z][_A-Za-z0-9]*\)'

# Transform the above into a raw symbol and a C symbol.
symxfrm='\1 \2\3 \3'

# Transform an extracted symbol line into a proper C declaration
global_symbol_to_cdecl="sed -n -e 's/^. .* \(.*\)$/extern char \1;/p'"

# Define system-specific variables.
case "$host_os" in
aix*)
  symcode='[BCDT]'
  ;;
cygwin* | mingw*)
  symcode='[ABCDGISTW]'
  ;;
hpux*) # Its linker distinguishes data from code symbols
  global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern char \1();/p' -e 's/^. .* \(.*\)$/extern char \1;/p'"
  ;;
irix*)
  symcode='[BCDEGRST]'
  ;;
solaris* | sysv5*)
  symcode='[BDT]'
  ;;
sysv4)
  symcode='[DFNSTU]'
  ;;
esac

# Handle CRLF in mingw too chain
opt_cr=
case "$host_os" in
mingw*)
  opt_cr=`echo 'x\{0,1\}' | tr x '\015'` # option cr in regexp
  ;;
esac

# If we're using GNU nm, then use its standard symbol codes.
if $NM -V 2>&1 | egrep '(GNU|with BFD)' > /dev/null; then
  symcode='[ABCDGISTW]'
fi

# Try without a prefix undercore, then with it.
for ac_symprfx in "" "_"; do

  # Write the raw and C identifiers.
global_symbol_pipe="sed -n -e 's/^.*[ 	]\($symcode\)[ 	][ 	]*\($ac_symprfx\)$sympat$opt_cr$/$symxfrm/p'"

  # Check to see that the pipe works correctly.
  pipe_works=no
  $rm conftest*
  cat > conftest.$ac_ext <<EOF
#ifdef __cplusplus
extern "C" {
#endif
char nm_test_var;
void nm_test_func(){}
#ifdef __cplusplus
}
#endif
int main(){nm_test_var='a';nm_test_func();return(0);}
EOF

  echo "$progname:1309: checking if global_symbol_pipe works" >&5
  if { (eval echo $progname:1310: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; } && test -s conftest.$objext; then
    # Now try to grab the symbols.
    nlist=conftest.nm
    if { echo "$progname:1313: eval \"$NM conftest.$objext | $global_symbol_pipe > $nlist\"" >&5; eval "$NM conftest.$objext | $global_symbol_pipe > $nlist 2>&5"; } && test -s "$nlist"; then

      # Try sorting and uniquifying the output.
      if sort "$nlist" | uniq > "$nlist"T; then
	mv -f "$nlist"T "$nlist"
      else
	rm -f "$nlist"T
      fi