add missing includes to s4u.h

diff --git a/include/simgrid/s4u.h b/include/simgrid/s4u.h
index 3d3d966..d5e8c1e 100644 (file)
--- a/include/simgrid/s4u.h
+++ b/include/simgrid/s4u.h
@@ -11,4 +11,7 @@
 #include "s4u/engine.hpp"
 #include "s4u/host.hpp"
 
+#include "s4u/async.hpp"
+#include "s4u/comm.hpp"
+
 #endif /* SIMGRID_S4U_S4U_H */