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From aa09af0fe2ec0737fa04ffd00957532684e257b9 Mon Sep 17 00:00:00 2001
From: Xiao Ni <xni@redhat.com>
Date: Fri, 17 Mar 2017 19:55:42 +0800
Subject: [PATCH 1/5] 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>
---
Upstream-Status: Backport
Makefile | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Makefile b/Makefile
index 0f307ec..e1a7058 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
--
2.12.2
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