-# Compute the version number and the release, they are needed by the .spec file.
-AC_SUBST([version], [[`sed 's/.* version \([0-9][0-9.]*\).*/\1/' VERSION`]])
+# Calculate project version as an integer, using 2 digits for minor version
+case $PACKAGE_VERSION in
+ *.?) ProjectVersionInt=`echo "$PACKAGE_VERSION" | sed 's,^\(.*\)\.\(.\)$,\10\2,'` ;;
+ *.??) ProjectVersionInt=`echo "$PACKAGE_VERSION" | sed 's,^\(.*\)\.\(..\)$,\1\2,'` ;;
+ *) AC_MSG_ERROR([bad package version $PACKAGE_VERSION]) ;;
+esac
+AC_SUBST([ProjectVersionInt])
+
+# Hmmm, we fix the RPM release number to 1 here... Is this convenient?