1*4882a593SmuzhiyunFrom 37c35f94d9d95dbd2b5f8a919f5478be51453590 Mon Sep 17 00:00:00 2001 2*4882a593SmuzhiyunFrom: Khem Raj <raj.khem@gmail.com> 3*4882a593SmuzhiyunDate: Fri, 13 Oct 2017 10:27:34 -0700 4*4882a593SmuzhiyunSubject: [PATCH] Use CC to check for implicit-fallthrough warning support 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunThis warning it new in gcc7 and in cross compile case 7*4882a593Smuzhiyunits possible that build host gcc is version 7+ but the 8*4882a593Smuzhiyuncross compile used for compiling mdadm is < version 7 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunSigned-off-by: Khem Raj <raj.khem@gmail.com> 11*4882a593SmuzhiyunUpstream-Status: Pending 12*4882a593Smuzhiyun--- 13*4882a593Smuzhiyun Makefile | 2 +- 14*4882a593Smuzhiyun 1 file changed, 1 insertion(+), 1 deletion(-) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyundiff --git a/Makefile b/Makefile 17*4882a593Smuzhiyunindex 46bf57b..a075912 100644 18*4882a593Smuzhiyun--- a/Makefile 19*4882a593Smuzhiyun+++ b/Makefile 20*4882a593Smuzhiyun@@ -53,7 +53,7 @@ ifdef WARN_UNUSED 21*4882a593Smuzhiyun CWFLAGS += -Wp,-D_FORTIFY_SOURCE=2 -O3 22*4882a593Smuzhiyun endif 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun-FALLTHROUGH := $(shell gcc -v --help 2>&1 | grep "implicit-fallthrough" | wc -l) 25*4882a593Smuzhiyun+FALLTHROUGH := $(shell ${CC} -v --help 2>&1 | grep "implicit-fallthrough" | wc -l) 26*4882a593Smuzhiyun ifneq "$(FALLTHROUGH)" "0" 27*4882a593Smuzhiyun CWFLAGS += -Wimplicit-fallthrough=0 28*4882a593Smuzhiyun endif 29