Index: head/lib/libclang_rt/profile/Makefile
===================================================================
--- head/lib/libclang_rt/profile/Makefile	(revision 313008)
+++ head/lib/libclang_rt/profile/Makefile	(revision 313009)
@@ -1,21 +1,24 @@
 # $FreeBSD$
 
 .include <bsd.init.mk>
 
 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
 SRCS+=		profile/InstrProfilingFile.c
 SRCS+=		profile/InstrProfilingMerge.c
 SRCS+=		profile/InstrProfilingMergeFile.c
 SRCS+=		profile/InstrProfilingPlatformDarwin.c
 SRCS+=		profile/InstrProfilingPlatformLinux.c
 SRCS+=		profile/InstrProfilingPlatformOther.c
 SRCS+=		profile/InstrProfilingRuntime.cc
 SRCS+=		profile/InstrProfilingUtil.c
 SRCS+=		profile/InstrProfilingValue.c
 SRCS+=		profile/InstrProfilingWriter.c
 
 .include <bsd.lib.mk>