diff --git a/configure.ac b/configure.ac
index 4e8476a..8b28ff0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -85,6 +85,10 @@
 FRUGEN="$PYTHON $srcdir/scripts/fru_gen.py -i $FRU_YAML_GEN"
 AC_SUBST(FRUGEN)
 
+AC_DEFINE(CALLOUT_FWD_ASSOCIATION, "callout", [The name of the callout's forward association.])
+AC_DEFINE(BOARD_SENSOR, "/xyz/openbmc_project/inventory/system/chassis/motherboard", [The inventory path to the motherboard fault sensor.])
+AC_DEFINE(SYSTEM_SENSOR, "/xyz/openbmc_project/inventory/system", [The inventory path to the system event sensor.])
+
 # Soft Power off related.
 AS_IF([test "x$enable_softoff" != "xno"],
     # Dbus service name