# endif
#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
#if !HAVE_ALARM
# define alarm(X) /* empty */
#endif
+/* Work around redefinition to rpl_putenv by other config tests. */
+#undef putenv
+
static time_t time_t_max;
/* Values we'll use to set the TZ environment variable. */