Index: head/lib/libclang_rt/profile/Makefile
===================================================================
--- head/lib/libclang_rt/profile/Makefile
+++ head/lib/libclang_rt/profile/Makefile
@@ -4,6 +4,9 @@
 
 LIB=		clang_rt.profile-${CRTARCH}
 
+# This is needed for --coverage
+CFLAGS+=	-fvisibility=default
+
 SRCS+=		profile/GCDAProfiling.c
 SRCS+=		profile/InstrProfiling.c
 SRCS+=		profile/InstrProfilingBuffer.c