1diff -ur a/build/dbm.m4 b/build/dbm.m4
2--- a/build/dbm.m4 2013-11-23 13:00:53.000000000 -0500
3+++ b/build/dbm.m4 2023-10-22 20:16:37.764571446 -0400
4@@ -235,7 +235,7 @@
5 #include <stdlib.h>
6 #include <stdio.h>
7 #include <$apu_try_berkeley_db_header>
8-main ()
9+int main ()
10 {
11 int major, minor, patch;
12