diff --git a/src/modules/files/file_machine.h.in b/src/modules/files/file_machine.h.in
index 5c9482478e6f8818a3f4dd73121c50358e1730d9..75fe80ac7768b1610ad66091eb7f5cde5c6a7a02 100644
--- a/src/modules/files/file_machine.h.in
+++ b/src/modules/files/file_machine.h.in
@@ -40,6 +40,12 @@
 /* Define if you have getwd.  */
 #undef HAVE_GETWD
 
+/* Define if you have solaris stype gethostbyname_r.  */
+#undef HAVE_SOLARIS_GETHOSTBYNAME_R
+
+/* Define if you have OSF1 stype gethostbyname_r.  */
+#undef HAVE_OSF1_GETHOSTBYNAME_R
+
 /* Define if you have fork1.  */
 #undef HAVE_FORK1