diff --git a/Pmodules/modbuild b/Pmodules/modbuild
index 04807b7..f0eb0b8 100755
--- a/Pmodules/modbuild
+++ b/Pmodules/modbuild
@@ -9,7 +9,6 @@ declare -r  prog=$(basename "$0")
 # The libs are found via PATH
 PATH="/usr/bin:/bin:/usr/sbin:/sbin:${mydir}:${mydir}/../lib:${mydir}/../config"
 source libstd.bash    || { echo "Oops: library '$_' cannot be loaded!" 1>&2; exit 3; }
-source libpbuild.bash || std::die 3 "Oops: library '$_' cannot be loaded!"
 
 #.............................................................................
 # constants
@@ -281,7 +280,7 @@ set_full_module_name_and_prefix() {
 # $2:	version 
 initialize_module_vars() {
 	local -r script_name="$1"
-	local -r v="$2"
+	local    v="$2"
 
 	# split path of build script into components
 	local -a fname
@@ -307,24 +306,32 @@ initialize_module_vars() {
 	V_MAJOR=''		# first number in version string
 	V_MINOR=''		# second number in version string (or empty)
 	V_PATCHLVL=''		# third number in version string (or empty)
+	V_RELEASE=''		# module release (or empty)
+	USE_FLAGS=''		# architectures (or empty)
 
+	local tmp=''
+	
+	if [[ "$v" =~ "_" ]]; then
+		tmp="${v#*_}"
+		USE_FLAGS=":${tmp//_/:}:"
+		v="${v%%_*}"
+	fi
 	V_PKG="${v%%-*}"	# version without the release number
 	V_RELEASE="${v#*-}"	# release number 
-	local tmp="${V_PKG}"
 
-	case "${tmp}" in
+	case "${V_PKG}" in
 		*.*.* )
-			V_MAJOR="${tmp%%.*}"
-			tmp="${tmp#*.}"
+			V_MAJOR="${V_PKG%%.*}"
+			tmp="${V_PKG%%.*#*.}"
 			V_MINOR="${tmp%%.*}"
 			V_PATCHLVL="${tmp#*.}"
 			;;
 		*.* )
-			V_MAJOR="${tmp%.*}"
-			V_MINOR="${tmp#*.}"
+			V_MAJOR="${V_PKG%.*}"
+			V_MINOR="${V_PKG#*.}"
 			;;
 		* )
-			V_MAJOR="${tmp}"
+			V_MAJOR="${V_PKG}"
 			;;
 	esac
 }
@@ -407,6 +414,7 @@ declare -r ARGS="$@"
 #.............................................................................
 # main
 parse_args "$@"
+source libpbuild.bash || std::die 3 "Oops: library '$_' cannot be loaded!"
 declare -r BUILD_SCRIPT
 declare -r BUILDBLOCK_DIR