ltmain.sh

PPP协议的实现演示

	    $echo "$modename: cannot find name of link library for \`$lib'" 1>&2
	    exit 1
	  fi
	  if test -n "$libdir"; then
	    $echo "$modename: \`$lib' is not a convenience library" 1>&2
	    exit 1
	  fi
	  # It is a libtool convenience library, so add in its objects.
	  convenience="$convenience $ladir/$objdir/$old_library"
	  old_convenience="$old_convenience $ladir/$objdir/$old_library"
	  continue
	fi

	# Get the name of the library we link against.
	linklib=
	for l in $old_library $library_names; do
	  linklib="$l"
	done
	if test -z "$linklib"; then
	  $echo "$modename: cannot find name of link library for \`$lib'" 1>&2
	  exit 1
	fi

	# This library was specified with -dlopen.
	if test $pass = dlopen; then
	  if test -z "$dlname" || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
	    # If there is no dlname, no dlopen support or we're linking statically,
	    # we need to preload.
	    dlprefiles="$dlprefiles $lib"
	  else
	    newdlfiles="$newdlfiles $lib"
	  fi
	  continue
	fi

	# We need an absolute path.
	case "$ladir" in
	[\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
	*)
	  abs_ladir=`cd "$ladir" && pwd`
	  if test -z "$abs_ladir"; then
	    $echo "$modename: warning: cannot determine absolute directory name of \`$ladir'" 1>&2
	    $echo "$modename: passing it literally to the linker, although it might fail" 1>&2
	    abs_ladir="$ladir"
	  fi
	  ;;
	esac
	laname=`$echo "X$lib" | $Xsed -e 's%^.*/%%'`

	# Find the relevant object directory and library name.
	if test "X$installed" = Xyes; then
	  if test ! -f "$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
	    $echo "$modename: warning: library \`$lib' was moved." 1>&2
	    dir="$ladir"
	    absdir="$abs_ladir"
	    libdir="$abs_ladir"
	  else
	    dir="$libdir"
	    absdir="$libdir"
	  fi
	else
	  dir="$ladir/$objdir"
	  absdir="$abs_ladir/$objdir"
	  # Remove this search path later
	  uninst_path="$uninst_path $abs_ladir"
	fi
	name=`$echo "X$laname" | $Xsed -e 's/\.la$//' -e 's/^lib//'`

	# This library was specified with -dlpreopen.
	if test $pass = dlpreopen; then
	  # Prefer using a static library (so that no silly _DYNAMIC symbols
	  # are required to link).
	  if test -n "$old_library"; then
	    newdlprefiles="$newdlprefiles $dir/$old_library"
	  else
	    newdlprefiles="$newdlprefiles $dir/$linklib"
	  fi
	fi

	if test $linkmode = prog && test $pass != link; then
	  new_lib_search_path="$new_lib_search_path $ladir"
	  deplibs="$lib $deplibs"

	  linkalldeplibs=no
	  if test "$link_all_deplibs" != no || test "$fast_install" != no || \
	     test "$build_libtool_libs" = no || test -z "$library_names"; then
	    linkalldeplibs=yes
	  fi

	  tmp_libs=
	  for deplib in $dependency_libs; do
	    case "$deplib" in
	    -L*) new_lib_search_path="$new_lib_search_path "`$echo "X$deplib" | $Xsed -e 's/^-L//'`;; ### testsuite: skip nested quoting test
	    esac
	    # Need to link against all dependency_libs?
	    if test $linkalldeplibs = yes; then
	      deplibs="$deplib $deplibs"
	    else
	      # Need to hardcode shared library paths
	      # or/and link against static libraries
	      newdependency_libs="$deplib $newdependency_libs"
	    fi
	    case "$tmp_libs " in
	    *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
	    esac
	    tmp_libs="$tmp_libs $deplib"
	  done
	  continue
	fi

	if test -z "$libdir"; then
	  # It is a libtool convenience library, so add in its objects.
	  convenience="$convenience $dir/$old_library"
	  old_convenience="$old_convenience $dir/$old_library"
	  if test $linkmode = lib; then
	    deplibs="$dir/$old_library $deplibs"
	    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 $deplib"
	    done
	  elif test "$linkmode,$pass" = "prog,link"; then
	    compile_deplibs="$dir/$old_library $compile_deplibs"
	    finalize_deplibs="$dir/$old_library $finalize_deplibs"
	  fi
	  continue
	fi

	if test "$linkmode,$pass" = "prog,link"; then
	  if test -n "$library_names" &&
	     { test "$hardcode_into_libs" != all || test "$alldeplibs" != yes; } &&
	     { test "$prefer_static_libs" = no || test -z "$old_library"; }; then
	    # We need to hardcode the library path
	    if test -n "$shlibpath_var"; then
	      # Make sure the rpath contains only unique directories.
	      case "$temp_rpath " in
	      *" $dir "*) ;;
	      *" $absdir "*) ;;
	      *) temp_rpath="$temp_rpath $dir" ;;
	      esac
	    fi

	    # Hardcode the library path.
	    # Skip directories that are in the system default run-time
	    # search path.
	    case " $sys_lib_dlsearch_path " in
	    *" $absdir "*) ;;
	    *)
	      case "$compile_rpath " in
	      *" $absdir "*) ;;
	      *) compile_rpath="$compile_rpath $absdir"
	      esac
	      ;;
	    esac

	    case " $sys_lib_dlsearch_path " in
	    *" $libdir "*) ;;
	    *)
	      case "$finalize_rpath " in
	      *" $libdir "*) ;;
	      *) finalize_rpath="$finalize_rpath $libdir"
	      esac
	      ;;
	    esac
	  fi

	  if test "$alldeplibs" = yes &&
	     { test "$deplibs_check_method" = pass_all ||
	       { test "$build_libtool_libs" = yes &&
		 test -n "$library_names"; }; }; then
	    # Do we only need to link against static libraries?
	    continue
	  fi
	fi

	link_static=no # Whether this library is linked statically
	if test -n "$library_names" &&
	   { test "$prefer_static_libs" = no || test -z "$old_library"; }; then
	  link_against_libtool_libs="$link_against_libtool_libs $lib"
	  test "X$installed" = xno && need_relink=yes
	  # This is a shared library
	  if test $linkmode = lib && test "$hardcode_into_libs" = all; then
	    # Hardcode the library path.
	    # Skip directories that are in the system default run-time
	    # search path.
	    case " $sys_lib_dlsearch_path " in
	    *" $absdir "*) ;;
	    *)
	      case "$compile_rpath " in
	      *" $absdir "*) ;;
	      *) compile_rpath="$compile_rpath $absdir"
	      esac
	      ;;
	    esac
	    case " $sys_lib_dlsearch_path " in
	    *" $libdir "*) ;;
	    *)
	      case "$finalize_rpath " in
	      *" $libdir "*) ;;
	      *) finalize_rpath="$finalize_rpath $libdir"
	      esac
	      ;;
	    esac
	  fi

	  if test -n "$old_archive_from_expsyms_cmds"; then
	    # figure out the soname
	    set dummy $library_names
	    realname="$2"
	    shift; shift
	    libname=`eval \\$echo \"$libname_spec\"`
	    if test -n "$soname_spec"; then
	      eval soname=\"$soname_spec\"
	    else
	      soname="$realname"
	    fi

	    # Make a new name for the extract_expsyms_cmds to use
	    newlib="libimp-`echo $soname | sed 's/^lib//;s/\.dll$//'`.a"

	    # If the library has no export list, then create one now
	    if test -f "$output_objdir/$soname-def"; then :
	    else
	      $show "extracting exported symbol list from \`$soname'"
	      IFS="${IFS= 	}"; save_ifs="$IFS"; IFS='~'
	      eval cmds=\"$extract_expsyms_cmds\"
	      for cmd in $cmds; do
		IFS="$save_ifs"
		$show "$cmd"
		$run eval "$cmd" || exit $?
	      done
	      IFS="$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