along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#if defined(USG) || defined(STDC_HEADERS)
+#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
#include <string.h>
+#ifndef rindex
#define rindex strrchr
+#endif
#else
#include <strings.h>
#endif