1 files changed, 4 insertions, 1 deletions

diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile
index 078061c321b0..58d4260a04b2 100644
--- a/fs/btrfs/Makefile
+++ b/fs/btrfs/Makefile
@@ -1,10 +1,13 @@
 
+CC=gcc
 CFLAGS = -g -Wall
 headers = radix-tree.h ctree.h disk-io.h kerncompat.h print-tree.h
 objects = ctree.o disk-io.o radix-tree.o mkfs.o extent-tree.o print-tree.o
 
 # if you don't have sparse installed, use ls instead
-check=sparse
+CHECKFLAGS=-D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise \
+                -Wcontext -Wcast-truncate -Wuninitialized -Wshadow -Wundef
+check=sparse $(CHECKFLAGS)
 #check=ls
 
 .c.o: