commit 94b91d2aac9fea06475bb86ac86fe8fa1e3e58af
Author: Ed Maste <emaste@freebsd.org>
Date:   Wed May 6 12:30:21 2015 -0400

    Build libgcov only if we're building base system GCC
    
    Clang uses libcompiler_rt for the code coverage runtime, and ports GCC
    provides its own libgcov.
    
    PR:		200203 (exp-run)

diff --git a/gnu/lib/Makefile b/gnu/lib/Makefile
index 6d28e13..a208c79 100644
--- a/gnu/lib/Makefile
+++ b/gnu/lib/Makefile
@@ -2,10 +2,10 @@
 
 .include <src.opts.mk>
 
-SUBDIR= csu libgcc libgcov libdialog libregex libreadline
+SUBDIR= csu libgcc libdialog libregex libreadline
 
 .if ${MK_GCC} != "no"
-SUBDIR+= libgomp
+SUBDIR+= libgcov libgomp
 .endif
 
 .if ${MK_SSP} != "no"
diff --git a/tools/build/mk/OptionalObsoleteFiles.inc b/tools/build/mk/OptionalObsoleteFiles.inc
index ec22f63..632983e 100644
--- a/tools/build/mk/OptionalObsoleteFiles.inc
+++ b/tools/build/mk/OptionalObsoleteFiles.inc
@@ -1744,6 +1744,7 @@ OLD_FILES+=usr/include/gcc/4.2/ppc-asm.h
 OLD_FILES+=usr/include/gcc/4.2/spe.h
 .endif
 OLD_FILES+=usr/include/omp.h
+OLD_FILES+=usr/lib/libgcov.a
 OLD_FILES+=usr/lib/libgomp.a
 OLD_FILES+=usr/lib/libgomp.so
 OLD_FILES+=usr/lib/libgomp.so.1