diff --git a/c/src/lib/configure.in b/c/src/lib/configure.in
index 01eaacccab..26d2e8cfcf 100644
--- a/c/src/lib/configure.in
+++ b/c/src/lib/configure.in
@@ -36,6 +36,7 @@ AM_CONDITIONAL(HAS_NETWORKING,test "$HAS_NETWORKING" = "yes")
 AC_OUTPUT( 
 Makefile
 include/Makefile
+include/rtems/Makefile
 include/sys/Makefile
 include/motorola/Makefile
 include/zilog/Makefile