$NetBSD: patch-Makefile,v 1.1 2020/01/15 16:24:18 nia Exp $

Do not override CFLAGS.

--- Makefile.orig	2020-01-01 12:31:32.000000000 +0000
+++ Makefile
@@ -1,7 +1,7 @@
 ALL=lr
 ZSHCOMP=_lr
 
-CFLAGS=-g -O2 -Wall -Wno-switch -Wextra -Wwrite-strings
+CFLAGS+= -Wall -Wno-switch -Wextra -Wwrite-strings
 
 DESTDIR=
 PREFIX=/usr/local