- AC_REQUIRE([AC_C_INLINE])
- AC_CHECK_FUNCS_ONCE(utmpname utmpxname)
- AC_CHECK_DECLS(getutent,,,[
+ AC_CHECK_FUNCS_ONCE([utmpname utmpxname])
+ AC_CHECK_DECLS([getutent],,,[[
+/* <sys/types.h> is a prerequisite of <utmp.h> on FreeBSD 8.0, OpenBSD 4.6. */
+#include <sys/types.h>