Index: tools/build/v2/tools/clang-darwin.jam
===================================================================
--- tools/build/v2/tools/clang-darwin.jam	(revision 85159)
+++ tools/build/v2/tools/clang-darwin.jam	(working copy)
@@ -73,7 +73,7 @@
 SPACE = " " ;
 
 flags clang-darwin.compile OPTIONS <cflags> ;
-flags clang-darwin.compile OPTIONS <cxxflags> ;
+flags clang-darwin.compile.c++ OPTIONS <cxxflags> ;
 # flags clang-darwin.compile INCLUDES <include> ;
 
 # Declare flags and action for compilation.