Index: boost/interprocess/mapped_region.hpp
===================================================================
--- boost/interprocess/mapped_region.hpp	(revision 54353)
+++ boost/interprocess/mapped_region.hpp	(working copy)
@@ -31,7 +31,9 @@
 #    include <unistd.h>
 #    include <sys/stat.h>
 #    include <sys/types.h>
-#    include <sys/shm.h>
+#    ifdef BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS
+#      include <sys/shm.h>
+#    endif
 #    include <cassert>
 #  else
 #    error Unknown platform