ltcf-cxx.sh

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

#### This script is meant to be sourced by ltconfig.

# $Id: ltcf-cxx.sh,v 1.24 2000/08/10 21:58:04 matz Exp $

# ltcf-cxx.sh - Create a C++ compiler specific configuration
#
# Copyright (C) 1996-1999,2000 Free Software Foundation, Inc.
# Originally by Gordon Matzigkeit <[e-mail]>, 1996
#
# Original C++ support by:
#    Alexandre Oliva <[e-mail]>
#    Ossama Othman <[e-mail]>
#    Thomas Thanner <[e-mail]>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.


# Source file extension for C++ test sources.
ac_ext=cc

# Object file extension for compiled C++ test sources.
objext=o

# Code to be used in simple compile tests
lt_simple_compile_test_code="int some_variable = 0;"

# Code to be used in simple link tests
lt_simple_link_test_code='int main(int, char *[]) { return (0); }'

# C++ compiler
CXX=${CXX-c++}

# ltmain only uses $CC for tagged configurations so make sure $CC is set.
CC=${CC-"$CXX"}
CFLAGS=${CFLAGS-"$CXXFLAGS"}

# Allow CC (or CXX) to be a program name with arguments.
set dummy $CC
compiler=$2
cc_basename=`$echo X"$compiler" | $Xsed -e 's%^.*/%%'`

# we are optimistic. (Too optimistic if you ask me, down there we switch it
# off again for most platforms ;) (MM)
ld_shlibs=yes

# Check if we are using GNU gcc  (taken/adapted from configure script)
# We need to check here since "--with-gcc" is set at configure time,
# not ltconfig time!
cat > conftest.$ac_ext <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  with_gcc=yes

  # Set up default GNU C++ configuration

  # Check if GNU C++ uses GNU ld as the underlying linker, since the
  # archiving commands below assume that GNU ld is being used.
  if eval "`$CC -print-prog-name=ld` --version 2>&1" | \
      egrep 'GNU ld' > /dev/null; then
    with_gnu_ld=yes

    archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
    archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'

    runpath_var=LD_RUN_PATH
    hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
    export_dynamic_flag_spec='${wl}--export-dynamic'

    # If archive_cmds runs LD, not CC, wlarc should be empty
    # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
    #     investigate it a little bit more. (MM)
    wlarc='${wl}'

    # ancient GNU ld didn't support --whole-archive et. al.
    if eval "`$CC -print-prog-name=ld` --help 2>&1" | \
        egrep 'no-whole-archive' > /dev/null; then
      whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
    else
      whole_archive_flag_spec=
    fi
  else
    with_gnu_ld=no
    wlarc=

    # A generic and very simple default shared library creation
    # command for GNU C++ for the case where it uses the native
    # linker, instead of GNU ld.  If possible, this setting should
    # overridden to take advantage of the native linker features on
    # the platform it is being used on.
    archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
  fi

  # Commands to make compiler produce verbose output that lists
  # what "hidden" libraries, object files and flags are used when
  # linking a shared library.
  output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'

else
  with_gcc=no
  with_gnu_ld=no
  wlarc=
fi

echo "ltcf-cxx: with_gcc=$with_gcc ; with_gnu_ld=$with_gnu_ld"

# In general, the C++ compiler should always link C++ objects.
LD="$CC"
LDFLAGS="$LDFLAGS"

# PORTME: fill in a description of your system's C++ link characteristics
case "$host_os" in
  aix3*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  aix4*)
    case "$cc_basename" in
      xlC)
        # IBM C++ compiler (xlC).  Anything older than Visual Age C++ 5.0 probably won't work.
        archive_cmds='$CC -qmkshrobj $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-G -o $lib'
        archive_expsym_cmds='$CC -qmkshrobj $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-G ${wl}-bE:$export_symbols -o $lib'
        ;;
      *)
        if test "$with_gcc" = yes; then
          # GNU C++ compiler
          archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-G -o $lib'
          archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-G ${wl}-bE:$export_symbols -o $lib'
        fi
        ;;
    esac
  
    hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
    hardcode_libdir_separator=':'
    hardcode_direct=unsupported
    link_all_deplibs=yes
    ;;
  chorus*)
    case "$cc_basename" in
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac 
    ;;
  dgux*)
    case "$cc_basename" in
      ec++)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      ghcx)
        # Green Hills C++ Compiler
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  freebsd*)
    # FreeBSD uses GNU C++ and GNU ld
    ;;
  hpux*)
    case "$cc_basename" in
      CC)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      aCC)
	case "$host_os" in
	hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;;
	*) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' ;;
	esac
	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
	hardcode_libdir_separator=:
	hardcode_direct=yes
	hardcode_minus_L=yes # Not in the search PATH, but as the default
			     # location of the library.
	export_dynamic_flag_spec='${wl}-E'

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmds='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | egrep "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
      *)
        if test "$with_gcc" = yes && test "$with_gnu_ld" = no ; then
	  # MM: for HP-UX and g++ -fPIC is needed to link pic objects together
	  archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
	  hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
	  hardcode_libdir_separator=:
	  hardcode_direct=yes
	  hardcode_minus_L=yes
	  export_dynamic_flag_spec='${wl}-E'
	  output_verbose_link_cmds='$CC -shared -fPIC $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
        fi
        if test "$with_gcc" = no ; then
	  # FIXME: insert proper C++ library support
          ld_shlibs=no
	fi
        ;;
    esac
    ;;
  irix5* | irix6*)
    case "$cc_basename" in
      CC)
        # SGI C++
        archive_cmds='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
        ;;
      *)
        if test "$with_gcc" = yes; then
          if test "$with_gnu_ld" = no; then
            archive_cmds='$CC -D_LANGUAGE_C_CPLUS_PLUS -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'
          else
            archive_cmds='$LD -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
          fi
        fi
        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
        hardcode_libdir_separator=:
        link_all_deplibs=yes
        ;;
    esac
    ;;
  linux*)
    case "$cc_basename" in
      KCC)
        # Kuck and Associates, Inc. (KAI) C++ Compiler

        # KCC will only create a shared library if the output file
        # ends with ".so" (or ".sl" for HP-UX), so rename the library
        # to its proper name (with version) after linking.
        archive_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $linker_flags --soname $soname -o \$templib; mv \$templib $lib'
        archive_expsym_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $linker_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmds='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest.so 2>&1 | egrep "ld"`; rm -f libconftest.so; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'

        hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
        export_dynamic_flag_spec='${wl}--export-dynamic'

	# Archives containing C++ object files must be created using
	# "CC -Bstatic", where "CC" is the KAI C++ compiler.
        old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
        ;;
      cxx)
        # Compaq C++
        archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-soname $wl$soname -o $lib'
        archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'

        runpath_var=LD_RUN_PATH
        hardcode_libdir_flag_spec='-rpath $libdir'
        hardcode_libdir_separator=:

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmds='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
      insure)
        if test "$with_gcc" = yes; then
	  # Insure++ together with gcc probably means also GNU ld
	  # only -whole-archive isn't supported
	  whole_archive_flag_spec=""
	  # and we can't use -nostdlib, because bloody insure has no way to
	  # output the linkline (-Zvm isn't working as documented), so we don't
	  # know the depending libs. So we hope, insure gets it right anyway.
	  archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
	  runpath_var=LD_RUN_PATH
	  hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
	  export_dynamic_flag_spec='${wl}--export-dynamic'