libtool

PPP协议的实现演示

	      done
	      IFS="$save_ifs"
	    fi

	    # Create $newlib
	    if test -f "$output_objdir/$newlib"; then :; else
	      $show "generating import library for \`$soname'"
	      IFS="${IFS= 	}"; save_ifs="$IFS"; IFS='~'
	      eval cmds=\"$old_archive_from_expsyms_cmds\"
	      for cmd in $cmds; do
		IFS="$save_ifs"
		$show "$cmd"
		$run eval "$cmd" || exit $?
	      done
	      IFS="$save_ifs"
	    fi
	    # make sure the library variables are pointing to the new library
	    dir=$output_objdir
	    linklib=$newlib
	  fi

	  if test $linkmode = prog || test "$mode" != relink; then
	    add_shlibpath=
	    add_dir=
	    add=
	    lib_linked=yes
	    case "$hardcode_action" in
	    immediate | unsupported)
	      if test "$hardcode_direct" = no; then
		add="$dir/$linklib"
	      elif test "$hardcode_minus_L" = no; then
		case "$host" in
		*-*-sunos*) add_shlibpath="$dir" ;;
		esac
		add_dir="-L$dir"
		add="-l$name"
	      elif test "$hardcode_shlibpath_var" = no; then
		add_shlibpath="$dir"
		add="-l$name"
	      else
		lib_linked=no
	      fi
	      ;;
	    relink)
	      if test "$hardcode_direct" = yes; then
		add="$dir/$linklib"
	      elif test "$hardcode_minus_L" = yes; then
		add_dir="-L$dir"
		add="-l$name"
	      elif test "$hardcode_shlibpath_var" = yes; then
		add_shlibpath="$dir"
		add="-l$name"
	      else
		lib_linked=no
	      fi
	      ;;
	    *) lib_linked=no ;;
	    esac

	    if test "$lib_linked" != yes; then
	      $echo "$modename: configuration error: unsupported hardcode properties"
	      exit 1
	    fi

	    if test -n "$add_shlibpath"; then
	      case ":$compile_shlibpath:" in
	      *":$add_shlibpath:"*) ;;
	      *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;;
	      esac
	    fi
	    if test $linkmode = prog; then
	      test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
	      test -n "$add" && compile_deplibs="$add $compile_deplibs"
	    else
	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
	      test -n "$add" && deplibs="$add $deplibs"
	      if test "$hardcode_direct" != yes && \
		 test "$hardcode_minus_L" != yes && \
		 test "$hardcode_shlibpath_var" = yes; then
		case ":$finalize_shlibpath:" in
		*":$libdir:"*) ;;
		*) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
		esac
	      fi
	    fi
	  fi

	  if test $linkmode = prog || test "$mode" = relink; then
	    add_shlibpath=
	    add_dir=
	    add=
	    # Finalize command for both is simple: just hardcode it.
	    if test "$hardcode_direct" = yes; then
	      add="$libdir/$linklib"
	    elif test "$hardcode_minus_L" = yes; then
	      add_dir="-L$libdir"
	      add="-l$name"
	    elif test "$hardcode_shlibpath_var" = yes; then
	      case ":$finalize_shlibpath:" in
	      *":$libdir:"*) ;;
	      *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
	      esac
	      add="-l$name"
	    else
	      # We cannot seem to hardcode it, guess we'll fake it.
	      add_dir="-L$libdir"
	      add="-l$name"
	    fi

	    if test $linkmode = prog; then
	      test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
	      test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
	    else
	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
	      test -n "$add" && deplibs="$add deplibs"
	    fi
	  fi
	elif test $linkmode = prog; then
	  # Here we assume that one of hardcode_direct or hardcode_minus_L
	  # is not unsupported.  This is valid on all known static and
	  # shared platforms.
	  if test "$hardcode_direct" != unsupported; then
	    test -n "$old_library" && linklib="$old_library"
	    compile_deplibs="$dir/$linklib $compile_deplibs"
	    finalize_deplibs="$dir/$linklib $finalize_deplibs"
	  else
	    compile_deplibs="-l$name -L$dir $compile_deplibs"
	    finalize_deplibs="-l$name -L$dir $finalize_deplibs"
	  fi
	elif test "$build_libtool_libs" = yes; then
	  # Not a shared library
	  if test "$deplibs_check_method" != pass_all; then
	    # We're trying link a shared library against a static one
	    # but the system doesn't support it.
	    # Just print a warning and add the library to dependency_libs so
	    # that the program can be linked against the static library.
	    echo
	    echo "*** Warning: This library needs some functionality provided by $lib."
	    echo "*** I have the capability to make that library automatically link in when"
	    echo "*** you link to this library.  But I can only do this if you have a"
	    echo "*** shared version of the library, which you do not appear to have."
	  else
	    convenience="$convenience $dir/$old_library"
	    old_convenience="$old_convenience $dir/$old_library"
	    deplibs="$dir/$old_library $deplibs"
	    link_static=yes
	  fi
	fi

	if test $linkmode = lib; then
	  if test -n "$dependency_libs" &&
	     { test "$hardcode_into_libs" = no || test $build_old_libs = yes ||
	       test $link_static = yes; }; then
	    # Extract -R from dependency_libs
	    temp_deplibs=
	    for libdir in $dependency_libs; do
	      case "$libdir" in
	      -R*) temp_xrpath=`$echo "X$libdir" | $Xsed -e 's/^-R//'`
		   case " $xrpath " in
		   *" $temp_xrpath "*) ;;
		   *) xrpath="$xrpath $temp_xrpath";;
		   esac;;
	      *) temp_deplibs="$temp_deplibs $libdir";;
	      esac
	    done
	    dependency_libs="$temp_deplibs"
	  fi

	  new_lib_search_path="$new_lib_search_path $absdir"
	  # Link against this library
	  test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
	  # ... and its dependency_libs
	  tmp_libs=
	  for deplib in $dependency_libs; do
	    newdependency_libs="$deplib $newdependency_libs"
	    case "$tmp_libs " in
	    *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
	    esac
	    tmp_libs="$tmp_libs $deplib"
	  done

	  if test $link_all_deplibs != no; then
	    # Add the search paths of all dependency libraries
	    for deplib in $dependency_libs; do
	      case "$deplib" in
	      -L*) path="$deplib" ;;
	      *.la)
		dir=`$echo "X$deplib" | $Xsed -e 's%/[^/]*$%%'`
		test "X$dir" = "X$deplib" && dir="."
		# We need an absolute path.
		case "$dir" in
		[\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
		*)
		  absdir=`cd "$dir" && pwd`
		  if test -z "$absdir"; then
		    $echo "$modename: warning: cannot determine absolute directory name of \`$dir'" 1>&2
		    absdir="$dir"
		  fi
		  ;;
		esac
		if grep "^installed=no" $deplib > /dev/null; then
		  path="-L$absdir/$objdir"
		else
		  eval libdir=`sed -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
		  if test -z "$libdir"; then
		    $echo "$modename: \`$deplib' is not a valid libtool archive" 1>&2
		    exit 1
		  fi
		  if test "$absdir" != "$libdir"; then
		    $echo "$modename: warning: \`$deplib' seems to be moved" 1>&2
		  fi
		  path="-L$absdir"
		fi
		;;
	      *) continue ;;
	      esac
	      case " $deplibs " in
	      *" $path "*) ;;
	      *) deplibs="$deplibs $path" ;;
	      esac
	    done
	  fi
	fi
      done
      dependency_libs="$newdependency_libs"
      if test $pass = dlpreopen; then
	# Link the dlpreopened libraries before other libraries
	deplibs="$deplibs $save_deplibs"
      elif test $pass != dlopen; then
	# Make sure lib_search_path contains only unique directories.
	lib_search_path=
	for dir in $new_lib_search_path; do
	  case "$lib_search_path " in
	  *" $dir "*) ;;
	  *) lib_search_path="$lib_search_path $dir" ;;
	  esac
	done
	lib_search_path="$lib_search_path $sys_lib_search_path"

	if test "$linkmode,$pass" != "prog,link"; then
	  vars="deplibs"
	else
	  vars="compile_deplibs finalize_deplibs"
	fi
	for var in $vars dependency_libs; do
	  # Make sure that $var contains only unique libraries
	  # and add them in reverse order
	  eval tmp_libs=\"\$$var\"
	  new_libs=
	  for deplib in $tmp_libs; do
	    case "$deplib" in
	    -L*) new_libs="$deplib $new_libs" ;;
	    *)
	      case " $specialdeplibs " in
	      *" $deplib "*) new_libs="$deplib $new_libs" ;;
	      *)
		case " $new_libs " in
		*" $deplib "*) ;;
		*) new_libs="$deplib $new_libs" ;;
		esac
		;;
	      esac
	      ;;
	    esac
	  done
	  tmp_libs=
	  for deplib in $new_libs; do
	    case "$deplib" in
	    -L*)
	      case " $tmp_libs " in
	      *" $deplib "*) ;;
	      *) tmp_libs="$tmp_libs $deplib" ;;
	      esac
	      ;;
	    *) tmp_libs="$tmp_libs $deplib" ;;
	    esac
	  done
	  eval $var=\"$tmp_libs\"
	done
      fi
    done
    if test $linkmode = prog; then
      dlfiles="$newdlfiles"
      dlprefiles="$newdlprefiles"
    fi

    case $linkmode in
    oldlib)
      if test -n "$deplibs"; then
	$echo "$modename: warning: \`-l' and \`-L' are ignored for archives" 1>&2
      fi

      if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
	$echo "$modename: warning: \`-dlopen' is ignored for archives" 1>&2
      fi

      if test -n "$rpath"; then
	$echo "$modename: warning: \`-rpath' is ignored for archives" 1>&2
      fi

      if test -n "$xrpath"; then
	$echo "$modename: warning: \`-R' is ignored for archives" 1>&2
      fi

      if test -n "$vinfo"; then
	$echo "$modename: warning: \`-version-info' is ignored for archives" 1>&2
      fi

      if test -n "$release"; then
	$echo "$modename: warning: \`-release' is ignored for archives" 1>&2
      fi

      if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
	$echo "$modename: warning: \`-export-symbols' is ignored for archives" 1>&2
      fi

      # Now set the variables for building old libraries.
      build_libtool_libs=no
      oldlibs="$output"
      objs="$objs$old_deplibs"
      ;;

    lib)
      # Make sure we only generate libraries of the form `libNAME.la'.
      case "$outputname" in
      lib*)
	name=`$echo "X$outputname" | $Xsed -e 's/\.la$//' -e 's/^lib//'`
	eval libname=\"$libname_spec\"
	;;
      *)
	if test "$module" = no; then
	  $echo "$modename: libtool library \`$output' must begin with \`lib'" 1>&2
	  $echo "$help" 1>&2
	  exit 1
	fi
	if test "$need_lib_prefix" != no; then
	  # Add the "lib" prefix for modules if required
	  name=`$echo "X$outputname" | $Xsed -e 's/\.la$//'`
	  eval libname=\"$libname_spec\"
	else
	  libname=`$echo "X$outputname" | $Xsed -e 's/\.la$//'`
	fi
	;;
      esac

      if test -n "$objs"; then
	if test "$deplibs_check_method" != pass_all; then
	  $echo "$modename: cannot build libtool library \`$output' from non-libtool objects on this host:$objs" 2>&1
	  exit 1
	else
	  echo
	  echo "*** Warning: Linking the shared library $output against the non-libtool"
	  echo "*** objects $objs is not portable!"
	  libobjs="$libobjs $objs"
	fi
      fi

      if test "$dlself" != no; then
	$echo "$modename: warning: \`-dlopen self' is ignored for libtool libraries" 1>&2
      fi

      set dummy $rpath
      if test $# -gt 2; then
	$echo "$modename: warning: ignoring multiple \`-rpath's for a libtool library" 1>&2
      fi
      install_libdir="$2"

      oldlibs=
      if test -z "$rpath"; then
	if test "$build_libtool_libs" = yes; then
	  # Building a libtool convenience library.
	  libext=al
	  oldlibs="$output_objdir/$libname.$libext $oldlibs"
	  build_libtool_libs=convenience
	  build_old_libs=yes
	fi

	if test -n "$vinfo"; then
	  $echo "$modename: warning: \`-version-info' is ignored for convenience libraries" 1>&2
	fi

	if test -n "$release"; then
	  $echo "$modename: warning: \`-release' is ignored for convenience libraries" 1>&2
	fi
      else

	# Parse the version information argument.
	IFS="${IFS= 	}"; save_ifs="$IFS"; IFS=':'
	set dummy $vinfo 0 0 0
	IFS="$save_ifs"

	if test -n "$8"; then
	  $echo "$modename: too many parameters to \`-version-info'" 1>&2
	  $echo "$help" 1>&2
	  exit 1
	fi

	current="$2"
	revision="$3"
	age="$4"

	# Check that each of the things are valid numbers.
	case "$current" in
	0 | [1-9] | [1-9][0-9]*) ;;
	*)
	  $echo "$modename: CURRENT \`$current' is not a nonnegative integer" 1>&2
	  $echo "$modename: \`$vinfo' is not valid version information" 1>&2
	  exit 1
	  ;;
	esac

	case "$revision" in
	0 | [1-9] | [1-9][0-9]*) ;;
	*)
	  $echo "$modename: REVISION \`$revision' is not a nonnegative integer" 1>&2
	  $echo "$modename: \`$vinfo' is not valid version information" 1>&2
	  exit 1
	  ;;
	esac

	case "$age" in
	0 | [1-9] | [1-9][0-9]*) ;;
	*)
	  $echo "$modename: AGE \`$age' is not a nonnegative integer" 1>&2
	  $echo "$modename: \`$vinfo' is not valid version information" 1>&2
	  exit 1
	  ;;
	esac

	if test $age -gt $current; then
	  $echo "$modename: AGE \`$age' is greater than the current interface number \`$current'" 1>&2
	  $echo "$modename: \`$vinfo' is not valid version information" 1>&2
	  exit 1
	fi

	# Calculate the version variables.
	major=
	versuffix=
	verstring=
	case "$version_type" in
	none) ;;

	irix)
	  major=`expr $current - $age + 1`
	  versuffix="$major.$revision"
	  verstring="sgi$major.$revision"

	  # Add in all the interfaces that we are compatible with.
	  loop=$revision
	  while test $loop != 0; do
	    iface=`expr $revision - $loop`
	    loop=`expr $loop - 1`
	    verstring="sgi$major.$iface:$verstring"
	  done
	  ;;

	linux)
	  major=.`expr $current - $age`
	  versuffix="$major.$age.$revision"
	  ;;

	osf)
	  major=`expr $current - $age`
	  versuffix=".$current.$age.$revision"
	  verstring="$current.$age.$revision"

	  # Add in all the interfaces that we are compatible with.
	  loop=$age
	  while test $loop != 0; do
	    iface=`expr $current - $loop`
	    loop=`expr $loop - 1`
	    verstring="$verstring:${iface}.0"
	  done

	  # Make executables depend on our current version.
	  verstring="$verstring:${current}.0"
	  ;;

	sunos)
	  major=".$current"
	  versuffix=".$current.$revision"
	  ;;

	freebsd-aout)
	  major=".$current"
	  versuffix=".$current.$revision";
	  ;;

	freebsd-elf)
	  major=".$current"
	  versuffix=".$current";
	  ;;

	windows)
	  # Like Linux, but with '-' rather than '.', since we only
	  # want one extension on Windows 95.
	  major=`expr $current - $age`
	  v