Added the -Wextra option to the compiler.

diff --git a/Makefile b/Makefile
index 279f091..3325911 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ else
   OPTIMIZE_FLAG = -O2
 endif
 
-CFLAGS = -Wall -ansi -pedantic -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DUNAME="$(UNAME)" $(OPTIMIZE_FLAG)
+CFLAGS = -Wall -Wextra -ansi -pedantic -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DUNAME="$(UNAME)" $(OPTIMIZE_FLAG)
 
 all: dus