ltmain.sh

常好且全面的jpeg图像压缩算法

	  continue
	  ;;
        *)
          eval "$prev=\"\$arg\""
          prev=
          continue
          ;;
        esac
      fi

      prevarg="$arg"

      case "$arg" in
      -all-static)
	if test -n "$link_static_flag"; then
          compile_command="$compile_command $link_static_flag"
	  finalize_command="$finalize_command $link_static_flag"
        fi
        continue
	;;

      -allow-undefined)
	# FIXME: remove this flag sometime in the future.
	$echo "$modename: \`-allow-undefined' is deprecated because it is the default" 1>&2
	continue
	;;

      -dlopen)
        prev=dlfiles
        continue
        ;;

      -dlpreopen)
        prev=dlprefiles
        continue
        ;;

      -export-dynamic)
        if test "$export_dynamic" != yes; then
          export_dynamic=yes
	  if test -n "$export_dynamic_flag_spec"; then
	    eval arg=\"$export_dynamic_flag_spec\"
	  else
	    arg=
	  fi

          # Add the symbol object into the linking commands.
	  compile_command="$compile_command @SYMFILE@"
	  finalize_command="$finalize_command @SYMFILE@"
        fi
        ;;

      -L*)
        dir=`$echo "X$arg" | $Xsed -e 's%^-L\(.*\)$%\1%'`
        case "$dir" in
        /* | [A-Za-z]:\\*)
	  # Add the corresponding hardcode_libdir_flag, if it is not identical.
          ;;
        *)
          $echo "$modename: \`-L$dir' cannot specify a relative directory" 1>&2
          exit 1
          ;;
        esac
        deplibs="$deplibs $arg"
        ;;

      -l*) deplibs="$deplibs $arg" ;;

      -no-undefined)
	allow_undefined=no
	continue
	;;

      -o) prev=output ;;

      -release)
	prev=release
	continue
	;;

      -rpath)
        prev=rpath
        continue
        ;;

      -static)
	# If we have no pic_flag, then this is the same as -all-static.
	if test -z "$pic_flag" && test -n "$link_static_flag"; then
          compile_command="$compile_command $link_static_flag"
	  finalize_command="$finalize_command $link_static_flag"
        fi
	continue
	;;

      -version-info)
        prev=vinfo
        continue
        ;;

      # Some other compiler flag.
      -* | +*)
	# Unknown arguments in both finalize_command and compile_command need
	# to be aesthetically quoted because they are evaled later.
	arg=`$echo "X$arg" | $Xsed -e "$sed_quote_subst"`
	case "$arg" in
	*[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*)
	  arg="\"$arg\""
	  ;;
	esac
        ;;

      *.o | *.a)
        # A standard object.
        objs="$objs $arg"
        ;;

      *.lo)
        # A library object.
	if test "$prev" = dlfiles; then
	  dlfiles="$dlfiles $arg"
	  if test "$build_libtool_libs" = yes; then
	    prev=
	    continue
	  else
	    # If libtool objects are unsupported, then we need to preload.
	    prev=dlprefiles
	  fi
	fi

	if test "$prev" = dlprefiles; then
	  # Preload the old-style object.
	  dlprefiles="$dlprefiles "`$echo "X$arg" | $Xsed -e 's/\.lo$/\.o/'`
	  prev=
	fi
	libobjs="$libobjs $arg"
        ;;

      *.la)
        # A libtool-controlled library.

        dlname=
        libdir=
        library_names=
        old_library=

        # Check to see that this really is a libtool archive.
        if (sed -e '2q' $arg | egrep '^# Generated by ltmain\.sh') >/dev/null 2>&1; then :
        else
          $echo "$modename: \`$arg' is not a valid libtool archive" 1>&2
          exit 1
        fi

        # If there is no directory component, then add one.
        case "$arg" in
        */* | *\\*) . $arg ;;
        *) . ./$arg ;;
        esac

        if test -z "$libdir"; then
          $echo "$modename: \`$arg' contains no -rpath information" 1>&2
          exit 1
        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 \`$arg'" 1>&2
          exit 1
        fi

        # Find the relevant object directory and library name.
        name=`$echo "X$arg" | $Xsed -e 's%^.*/%%' -e 's/\.la$//' -e 's/^lib//'`
        dir=`$echo "X$arg" | $Xsed -e 's%/[^/]*$%%'`
        if test "X$dir" = "X$arg"; then
          dir="$objdir"
        else
          dir="$dir/$objdir"
        fi

        # This library was specified with -dlopen.
        if test "$prev" = dlfiles; then
          dlfiles="$dlfiles $arg"
          if test -z "$dlname"; then
            # If there is no dlname, we need to preload.
            prev=dlprefiles
          else
            # We should not create a dependency on this library, but we
	    # may need any libraries it requires.
	    compile_command="$compile_command$dependency_libs"
	    finalize_command="$finalize_command$dependency_libs"
            prev=
            continue
          fi
        fi

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

        if test "$build_libtool_libs" = yes && test -n "$library_names"; then
          link_against_libtool_libs="$link_against_libtool_libs $arg"
          if test -n "$shlibpath_var"; then
            # Make sure the rpath contains only unique directories.
            case "$temp_rpath " in
            *" $dir "*) ;;
            *) temp_rpath="$temp_rpath $dir" ;;
            esac
          fi

	  # This is the magic to use -rpath.
          if test -n "$hardcode_libdir_flag_spec"; then
            if test -n "$hardcode_libdir_separator"; then
              if test -z "$hardcode_libdirs"; then
                # Put the magic libdir with the hardcode flag.
                hardcode_libdirs="$libdir"
                libdir="@HARDCODE_LIBDIRS@"
              else
                # Just accumulate the unique libdirs.
		case "$hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator" in
		*"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
		  ;;
		*)
		  hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
		  ;;
		esac
                libdir=
              fi
            fi

            if test -n "$libdir"; then
              eval flag=\"$hardcode_libdir_flag_spec\"

              compile_command="$compile_command $flag"
              finalize_command="$finalize_command $flag"
            fi
          elif test -n "$runpath_var"; then
            # Do the same for the permanent run path.
            case "$perm_rpath " in
            *" $libdir "*) ;;
            *) perm_rpath="$perm_rpath $libdir" ;;
            esac
          fi


          case "$hardcode_action" in
          immediate)
            if test "$hardcode_direct" = no; then
              compile_command="$compile_command $dir/$linklib"
            elif test "$hardcode_minus_L" = no; then
              compile_command="$compile_command -L$dir -l$name"
            elif test "$hardcode_shlibpath_var" = no; then
              compile_shlibpath="$compile_shlibpath$dir:"
              compile_command="$compile_command -l$name"
            fi
            ;;

          relink)
            # We need an absolute path.
            case "$dir" in
            /* | [A-Za-z]:\\*) ;;
            *)
              absdir=`cd "$dir" && pwd`
              if test -z "$absdir"; then
                $echo "$modename: cannot determine absolute directory name of \`$dir'" 1>&2
                exit 1
              fi
              dir="$absdir"
              ;;
            esac

            if test "$hardcode_direct" = yes; then
              compile_command="$compile_command $dir/$linklib"
            elif test "$hardcode_minus_L" = yes; then
              compile_command="$compile_command -L$dir -l$name"
            elif test "$hardcode_shlibpath_var" = yes; then
              compile_shlibpath="$compile_shlibpath$dir:"
              compile_command="$compile_command -l$name"
            fi
            ;;

          *)
            $echo "$modename: \`$hardcode_action' is an unknown hardcode action" 1>&2
            exit 1
            ;;
          esac

          # Finalize command for both is simple: just hardcode it.
          if test "$hardcode_direct" = yes; then
            finalize_command="$finalize_command $libdir/$linklib"
          elif test "$hardcode_minus_L" = yes; then
            finalize_command="$finalize_command -L$libdir -l$name"
          elif test "$hardcode_shlibpath_var" = yes; then
            finalize_shlibpath="$finalize_shlibpath$libdir:"
            finalize_command="$finalize_command -l$name"
          else
            # We cannot seem to hardcode it, guess we'll fake it.
            finalize_command="$finalize_command -L$libdir -l$name"
          fi
        else
          # Transform directly to old archives if we don't build new libraries.
          if test -n "$pic_flag" && test -z "$old_library"; then
            $echo "$modename: cannot find static library for \`$arg'" 1>&2
            exit 1
          fi

	  # 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="$old_library"
	    compile_command="$compile_command $dir/$linklib"
	    finalize_command="$finalize_command $dir/$linklib"
	  else
	    compile_command="$compile_command -L$dir -l$name"
	    finalize_command="$finalize_command -L$dir -l$name"
	  fi
        fi

	# Add in any libraries that this one depends upon.
	compile_command="$compile_command$dependency_libs"
	finalize_command="$finalize_command$dependency_libs"
	continue
        ;;

      # Some other compiler argument.
      *)
	# Unknown arguments in both finalize_command and compile_command need
	# to be aesthetically quoted because they are evaled later.
	arg=`$echo "X$arg" | $Xsed -e "$sed_quote_subst"`
	case "$arg" in
	*[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*)
	  arg="\"$arg\""
	  ;;
	esac
        ;;
      esac

      # Now actually substitute the argument into the commands.
      if test -n "$arg"; then
	compile_command="$compile_command $arg"
	finalize_command="$finalize_command $arg"
      fi
    done

    if test -n "$prev"; then
      $echo "$modename: the \`$prevarg' option requires an argument" 1>&2
      $echo "$help" 1>&2
      exit 1
    fi

    if test -n "$vinfo" && test -n "$release"; then
      $echo "$modename: you cannot specify both \`-version-info' and \`-release'" 1>&2
      $echo "$help" 1>&2
      exit 1
    fi

    oldlib=
    oldobjs=
    case "$output" in
    "")
      $echo "$modename: you must specify an output file" 1>&2
      $echo "$help" 1>&2
      exit 1
      ;;

    */* | *\\*)
      $echo "$modename: output file \`$output' must have no directory components" 1>&2
      exit 1
      ;;

    *.a)
      # Now set the variables for building old libraries.
      build_libtool_libs=no
      build_old_libs=yes
      oldlib="$output"
      $show "$rm $oldlib"
      $run $rm $oldlib
      ;;

    *.la)
      # Make sure we only generate libraries of the form `libNAME.la'.
      case "$output" in
      lib*) ;;
      *)
	$echo "$modename: libtool library \`$arg' must begin with \`lib'" 1>&2
	$echo "$help" 1>&2
	exit 1
	;;
      esac

      name=`$echo "X$output" | $Xsed -e 's/\.la$//' -e 's/^lib//'`
      eval libname=\"$libname_spec\"

      # All the library-specific variables (install_libdir is set above).
      library_names=
      old_library=
      dlname=
      current=0
      revision=0
      age=0

      if test -n "$objs"; then
        $echo "$modename: cannot build libtool library \`$output' from non-libtool objects:$objs" 2>&1
        exit 1
      fi

      # How the heck are we supposed to write a wrapper for a shared library?
      if test -n "$link_against_libtool_libs"; then
        $echo "$modename: libtool library \`$output' may not depend on uninstalled libraries:$link_against_libtool_libs" 1>&2
        exit 1
      fi

      if test -n "$dlfiles$dlprefiles"; then
        $echo "$modename: warning: \`-dlopen' is ignored while creating libtool libraries" 1>&2
        # Nullify the symbol file.
        compile_command=`$echo "X$compile_command" | $Xsed -e "s% @SYMFILE@%%"`
        finalize_command=`$echo "X$finalize_command" | $Xsed -e "s% @SYMFILE@%%"`
      fi

      if test -z "$rpath"; then
        $echo "$modename: you must specify an installation directory with \`-rpath'" 1>&2
	$echo "$help" 1>&2
        exit 1
      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"