diff --git a/math/siag/files/patch-dbm b/math/siag/files/patch-dbm
new file mode 100644
index 000000000000..55681fa67cf4
--- /dev/null
+++ b/math/siag/files/patch-dbm
@@ -0,0 +1,9 @@
+--- siod/ndbm.c	Thu Jun 24 05:18:57 1999
++++ siod/ndbm.c	Sun Apr  8 11:25:50 2001
+@@ -9,3 +9,6 @@
+ 
+ #include <ndbm.h>
++#if defined(GDBM) && defined(dbm_pagfno)
++#	undef dbm_pagfno
++#endif
+