File cramfs-tools-obey-cflags.patch of Package cramfs-tools

diff --git a/GNUmakefile b/GNUmakefile
index a06ad49..9317d92 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -1,5 +1,5 @@
 CC = gcc
-CFLAGS = -W -Wall -O2 -g
+CFLAGS += -W -Wall -O2 -g
 CPPFLAGS = -I.
 LDLIBS = -lz
 PROGS = mkcramfs cramfsck