diff --git a/SConstruct b/SConstruct
index 5050f7a9c2ff2d665cb88bdf6db8e70f5afd684f..46f80494dc3f4cf82756acef99206269455808ae 100644
--- a/SConstruct
+++ b/SConstruct
@@ -41,6 +41,7 @@ if GetOption("coverage"):
 if os.getenv("CC") == "clang":
     env.Replace(CC="clang",
                 CXX="clang++")
+    env.Append(LIBS=["profile_rt"])
 
 #rootpath = env['ROOTPATH'] = os.path.abspath('.')
 #env.Append(CPPPATH=os.path.join('#', "hammer"))