don't prepend "$(srcdir)/" to paths beginning with "$" since they are likely

to be absolute.

Modules/makesetup

@@ -189,6 +189,7 @@ sed -e 's/[ 	]*#.*//' -e '/^[ 	]*$/d' |
 			case $src in
 			glmodule.c) ;;
 			/*) ;;
+			\$*) ;;
 			*) src='$(srcdir)/'$src;;
 			esac
 			case $doconfig in