[PATCH 1/2] kbuild: use $(CFLAGS_GCOV) in the prefer-atomic try-run test

[Konstantin Khorenko]

Reference $(CFLAGS_GCOV) in the try-run test introduced by
commit 56cb9b7d96b2 ("gcov: use atomic counter updates to fix
concurrent access crashes"), otherwise it can miss potential future
changes in the list of flags used for GCOV profiling like it misses
-fno-tree-loop-im at the moment.

The outcome of the test is unchanged: -fno-tree-loop-im does not affect
the undefined symbols the test compares.

Suggested-by: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
Signed-off-by: Konstantin Khorenko <khorenko@xxxxxxxxxxxxx>
---
 Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 6b8b812f23b92..3b69b973f7598 100644
--- a/Makefile
+++ b/Makefile
@@ -1184,11 +1184,11 @@ CFLAGS_GCOV	+= -fno-tree-loop-im
 # undefined symbols (e.g. libatomic calls that the kernel cannot link).
 CFLAGS_GCOV	+= $(call try-run,\
 	echo 'long long x; void f(void){x++;}' | \
-	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -w -fprofile-arcs \
-	-ftest-coverage -x c - -c -o "$$TMP.base" && \
+	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -w $(CFLAGS_GCOV) \
+	-x c - -c -o "$$TMP.base" && \
 	echo 'long long x; void f(void){x++;}' | \
-	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -w -fprofile-arcs \
-	-ftest-coverage -fprofile-update=prefer-atomic \
+	$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -w $(CFLAGS_GCOV) \
+	-fprofile-update=prefer-atomic \
 	-x c - -c -o "$$TMP" && \
 	$(NM) "$$TMP.base" | grep ' U ' > "$$TMP.ubase" || true ; \
 	$(NM) "$$TMP" | grep ' U ' > "$$TMP.utest" || true ; \

-- 
2.43.0