--- yaffs2-20141016git/utils/Makefile.orig	2019-01-19 00:25:12.552050531 +0100
+++ yaffs2-20141016git/utils/Makefile	2019-01-19 00:25:18.597078500 +0100
@@ -17,7 +17,7 @@
 
 CFLAGS =    -O2 -Wall -Werror -DCONFIG_YAFFS_UTIL
 CFLAGS+=   -Wshadow -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-declarations
-CFLAGS+=   -Wmissing-prototypes -Wredundant-decls -Wnested-externs -Winline
+CFLAGS+=   -Wmissing-prototypes -Wredundant-decls -Wnested-externs -Winline -Wno-error=shift-count-overflow
 
 ## Change if you are using a cross-compiler
 MAKETOOLS =