From 8268821b434d1308d083454fb681d80176cf352b Mon Sep 17 00:00:00 2001

From: Xiao Ni <xni@redhat.com>

Date: Fri, 17 Mar 2017 19:55:42 +0800

Subject: [RHEL7.5 PATCH 009/169] mdadm: Add Wimplicit-fallthrough=0 in

 Makefile

There are many errors like 'error: this statement may fall through'.

But the logic is right. So add the flag Wimplicit-fallthrough=0

to disable the error messages. The method I use is from

https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html

#index-Wimplicit-fallthrough-375

Signed-off-by: Xiao Ni <xni@redhat.com>

Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>

---

 Makefile | 5 +++++

 1 file changed, 5 insertions(+)

diff --git a/Makefile b/Makefile

index a6f464c..d1a6ac4 100644

--- a/Makefile

+++ b/Makefile

@@ -48,6 +48,11 @@ ifdef WARN_UNUSED

 CWFLAGS += -Wp,-D_FORTIFY_SOURCE=2 -O3

 endif

+FALLTHROUGH := $(shell gcc -v --help 2>&1 | grep "implicit-fallthrough" | wc -l)

+ifneq "$(FALLTHROUGH)"  "0"

+CWFLAGS += -Wimplicit-fallthrough=0

+endif

+

 ifdef DEBIAN

 CPPFLAGS += -DDEBIAN

 endif

-- 

2.7.4