$OpenBSD: patch-src_Makefile_in,v 1.3 2006/04/07 07:12:28 pvalchev Exp $
--- src/Makefile.in.orig	Wed Apr  5 22:22:51 2006
+++ src/Makefile.in	Wed Apr  5 22:23:04 2006
@@ -69,7 +69,7 @@ VERSION = @VERSION@
 
 MAINTAINERCLEANFILES = Makefile.in
 
-CFLAGS = -Wall -Werror -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
+CFLAGS+= -Wall -Werror -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
 
 bin_PROGRAMS = stress
 stress_SOURCES = stress.c
