poky/meta/recipes-extended/mdadm/files/0001-Use-CC-to-check-for-implicit-fallthrough-warning-sup.patch

From c29d086714b49a6d76ccca83b4a6fa2f139bad6e Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 13 Oct 2017 10:27:34 -0700
Subject: [PATCH] Use CC to check for implicit-fallthrough warning support

This warning it new in gcc7 and in cross compile case
its possible that build host gcc is version 7+ but the
cross compile used for compiling mdadm is < version 7

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Pending
---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 7bfd336..9ab6a65 100644
--- a/Makefile
+++ b/Makefile
@@ -56,21 +56,21 @@ CWFLAGS += -Wp -O3
 endif
 
 ifeq ($(origin FALLTHROUGH), undefined)
-	FALLTHROUGH := $(shell gcc -Q --help=warnings 2>&1 | grep "implicit-fallthrough" | wc -l)
+	FALLTHROUGH := $(shell ${CC} -Q --help=warnings 2>&1 | grep "implicit-fallthrough" | wc -l)
 	ifneq "$(FALLTHROUGH)"  "0"
 	CWFLAGS += -Wimplicit-fallthrough=0
 	endif
 endif
 
 ifeq ($(origin FORMATOVERFLOW), undefined)
-	FORMATOVERFLOW := $(shell gcc -Q --help=warnings 2>&1 | grep "format-overflow" | wc -l)
+	FORMATOVERFLOW := $(shell ${CC} -Q --help=warnings 2>&1 | grep "format-overflow" | wc -l)
 	ifneq "$(FORMATOVERFLOW)"  "0"
 	CWFLAGS += -Wformat-overflow
 	endif
 endif
 
 ifeq ($(origin STRINGOPOVERFLOW), undefined)
-	STRINGOPOVERFLOW := $(shell gcc -Q --help=warnings 2>&1 | grep "stringop-overflow" | wc -l)
+	STRINGOPOVERFLOW := $(shell ${CC} -Q --help=warnings 2>&1 | grep "stringop-overflow" | wc -l)
 	ifneq "$(STRINGOPOVERFLOW)"  "0"
 	CWFLAGS += -Wstringop-overflow
 	endif