# define my_index strchr
#else
+# if HAVE_STRING_H
+# include <string.h>
+# else
+# include <strings.h>
+# endif
+
/* Avoid depending on library functions or files
whose names are inconsistent. */
#ifndef getenv
extern char *getenv ();
#endif
-#ifndef strncmp
-extern int strncmp ();
-#endif
static char *
my_index (str, chr)