--- ./src/mod_auth_kerb.c.org	2020-08-13 17:30:15.901691505 +0200
+++ ./src/mod_auth_kerb.c	2020-08-13 17:35:00.069621299 +0200
@@ -2062,6 +2062,11 @@
 static int
 have_rcache_type(const char *type)
 {
+  /* rcache "none" is always present in modern mit-krb5
+   * but krb5_rc_resolve_full() has been removed in 1.18.x
+   * so hardcode to true */
+   return 1;
+#if 0
    krb5_error_code ret;
    krb5_context context;
    krb5_rcache id = NULL;
@@ -2079,6 +2084,7 @@
    krb5_free_context(context);
 
    return found;
+#endif
 }
 
 /***************************************************************************