--- utils/Makefile.orig	2007-05-17 15:18:44.000000000 -0500
+++ utils/Makefile	2013-10-29 15:55:12.000000000 -0500
@@ -1,5 +1,5 @@
-CC	=	gcc
-CFLAGS	=	-ansi -pedantic
+CC	?=	gcc
+CFLAGS	?=	-ansi -pedantic
 
 FSLIO_INCS	=	-I../include
 NIFTI_INCS	=	-I../include