+
+#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
+