+#ifdef INITGROUPS_HEADER
+#include INITGROUPS_HEADER
+#else
+/* On AIX 4.1, initgroups() is defined and even documented (giving the parameter
+ types as char* and int), but doesn't have a prototype in any of the system
+ header files. AIX 4.3, SunOS 4.1.3, and ULTRIX 4.2A have the same
+ problem. */
+extern int initgroups(char*, int);
+#endif
+
+
+#ifdef HAVE_DB1_NDBM_H
+#include <db1/ndbm.h>
+#else
+#ifdef HAVE_GDBM_NDBM_H
+#include <gdbm/ndbm.h>
+#else
+#if defined(HAVE_DB_H) && defined(HAVE_LIBDB)
+#define DB_DBM_HSEARCH 1
+#include <db.h>
+#else
+#include <ndbm.h>
+#endif
+#endif
+#endif
+