diff -Nurd gsasl-1.10.0.orig/lib/gs2/gs2helper.c gsasl-1.10.0/lib/gs2/gs2helper.c
--- gsasl-1.10.0.orig/lib/gs2/gs2helper.c	2021-01-01 11:22:11.000000000 -0500
+++ gsasl-1.10.0/lib/gs2/gs2helper.c	2021-05-31 17:25:50.000000000 -0400
@@ -33,6 +33,8 @@
 /* Get specification. */
 #include "gs2helper.h"
 
+#include <gss-extra.h>
+
 /* Populate mech_oid with OID for the current SASL mechanism name.  A
    bit silly given that we only support Kerberos V5 today, but will be
    useful when that changes.  */