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>
2017-03-17 19:55:42 +08:00 · 2017-03-17 19:55:42 +08:00 · 8268821b43
parent 72b616aff2
commit 8268821b43
1 changed files with 5 additions and 0 deletions
--- a/5
+++ b/5
@ -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