$NetBSD: patch-readline_Make,v 1.1 2017/12/12 07:13:01 spz Exp $

--- readline/Make.orig	1995-02-24 21:19:59.000000000 +0000
+++ readline/Make
@@ -34,8 +34,8 @@ INCDIR = ..
 READLINE_DEFINES = $(TYPES) -DVI_MODE
 
 DEBUG_FLAGS = -g
-LDFLAGS = $(DEBUG_FLAGS) 
-CFLAGS = $(DEBUG_FLAGS) $(USG) -I. -I..
+LDFLAGS += $(DEBUG_FLAGS) 
+CFLAGS += $(DEBUG_FLAGS) $(USG) -I. -I..
 
 # A good alternative is gcc -traditional.
 #CC = gcc -traditional