+dnl Making releases:
+dnl RR_MICRO_VERSION += 1;
+dnl RR_INTERFACE_AGE += 1;
+dnl R_BINARY_AGE += 1;
+dnl if any functions have been added, set RR_INTERFACE_AGE to 0.
+dnl if backwards compatibility has been broken,
+dnl set RR_BINARY_AGE and RR_INTERFACE_AGE to 0.
+dnl
+dnl if MAJOR or MINOR version changes, be sure to change AC_INIT above to match
+dnl
+RR_MAJOR_VERSION=4
+RR_MINOR_VERSION=0
+RR_MICRO_VERSION=17
+RR_INTERFACE_AGE=0
+RR_BINARY_AGE=0
+RR_VERSION=$OB_MAJOR_VERSION.$OB_MINOR_VERSION
+
+OBT_MAJOR_VERSION=4
+OBT_MINOR_VERSION=0
+OBT_MICRO_VERSION=0
+OBT_INTERFACE_AGE=0
+OBT_BINARY_AGE=0
+OBT_VERSION=$OB_MAJOR_VERSION.$OB_MINOR_VERSION
+
+AC_SUBST(RR_MAJOR_VERSION)
+AC_SUBST(RR_MINOR_VERSION)
+AC_SUBST(RR_MICRO_VERSION)
+AC_SUBST(RR_INTERFACE_AGE)
+AC_SUBST(RR_BINARY_AGE)
+AC_SUBST(RR_VERSION)
+AC_SUBST(OBT_MAJOR_VERSION)
+AC_SUBST(OBT_MINOR_VERSION)
+AC_SUBST(OBT_MICRO_VERSION)
+AC_SUBST(OBT_INTERFACE_AGE)
+AC_SUBST(OBT_BINARY_AGE)
+AC_SUBST(OBT_VERSION)
+
+dnl Libtool versioning
+RR_RELEASE=$RR_MAJOR_VERSION.$RR_MINOR_VERSION
+RR_CURRENT=`expr $RR_MICRO_VERSION - $RR_INTERFACE_AGE`
+RR_REVISION=$RR_INTERFACE_AGE
+RR_AGE=`expr $RR_BINARY_AGE - $RR_INTERFACE_AGE`
+RR_CURRENT_MINUS_AGE=`expr $RR_CURRENT - $RR_AGE`
+
+OBT_RELEASE=$OBT_MAJOR_VERSION.$OBT_MINOR_VERSION
+OBT_CURRENT=`expr $OBT_MICRO_VERSION - $OBT_INTERFACE_AGE`
+OBT_REVISION=$OBT_INTERFACE_AGE
+OBT_AGE=`expr $OBT_BINARY_AGE - $OBT_INTERFACE_AGE`
+OBT_CURRENT_MINUS_AGE=`expr $OBT_CURRENT - $OBT_AGE`
+
+AC_SUBST(RR_RELEASE)
+AC_SUBST(RR_CURRENT)
+AC_SUBST(RR_REVISION)
+AC_SUBST(RR_AGE)
+AC_SUBST(RR_CURRENT_MINUS_AGE)
+AC_SUBST(OBT_RELEASE)
+AC_SUBST(OBT_CURRENT)
+AC_SUBST(OBT_REVISION)
+AC_SUBST(OBT_AGE)
+AC_SUBST(OBT_CURRENT_MINUS_AGE)
+