$OpenBSD: patch-Makefile,v 1.2 2011/11/13 13:54:04 ajacoutot Exp $
--- Makefile.orig	Mon Jan  1 19:47:02 2007
+++ Makefile	Sun Nov 13 10:21:13 2011
@@ -13,8 +13,8 @@ VERSION = 3.5.0
 
 
 CC	= gcc
-CFLAGS	= -I./src -I./userial -O2 # -g -Wall
-LIBS	= -lm
+CFLAGS	+= -I./src -I./userial
+LIBS	= -lm ${LDFLAGS}
 
 OBJS		=	src/digitemp.o src/device_name.o
 HDRS		= 	src/digitemp.h src/device_name.h
@@ -96,7 +96,7 @@ endif
 
 # USB specific flags
 ds2490:  CFLAGS += -DOWUSB
-ds2490:  LIBS   += -lusb
+ds2490:  LIBS   += -lusb -pthread
 
 
 help: