* SOFTWARE.
*/
-/*
- * For bt_component_class_source, bt_self_component_class_source,
- * __BT_UPCAST_CONST
- */
+#ifndef __BT_IN_BABELTRACE_H
+# error "Please include <babeltrace2/babeltrace.h> instead."
+#endif
+
#include <babeltrace2/types.h>
#ifdef __cplusplus