$NetBSD: patch-Makefile,v 1.1 2020/07/08 15:11:29 nia Exp $

Honour environment.

--- Makefile.orig	2012-05-07 02:27:38.000000000 +0000
+++ Makefile
@@ -32,8 +32,8 @@ OMIT_FRAME_PTR = -fomit-frame-pointer
 
 LUABIN = lua
 LUAPKG = lua5.2
-CFLAGS = `pkg-config $(LUAPKG) --cflags` -fPIC -O3 -Wall $(OMIT_FRAME_PTR)
-LFLAGS = -shared
+CFLAGS+= -Wall -fPIC
+LFLAGS = $(LDFLAGS) -shared
 
 INSTALL_PATH = `$(LUABIN) -e'                           \
     for dir in package.cpath:gmatch("(/[^?;]+)?") do    \