# if HAVE_FCNTL_H
# include <fcntl.h>
# endif
-# if HAVE_ERRNO_H
-# include <errno.h>
-# endif
+# include <errno.h>
# if defined(__FreeBSD__) || defined(__NetBSD__)
/* XXX The below hack is done until freeglut's autoconf is updated. */
# define HAVE_USB_JS 1