$NetBSD: patch-Makefile,v 1.1 2020/07/02 10:59:24 nia Exp $

- Don't pass -O3.
- Use LDFLAGS when linking.
- DESTDIR support.

--- Makefile.orig	2016-04-06 03:11:44.000000000 +0000
+++ Makefile
@@ -6,7 +6,7 @@ LUA_LIBDIR      := $(LUA_DIR)/lib/lua/$(
 LUA_INC         := $(LUA_DIR)/include/lua$(LUA_VER)
 LUA_SHARE       := $(LUA_DIR)/share/lua/$(LUA_VER)/term
 CWARNS          := -Wall -pedantic
-CFLAGS          += $(CWARNS) -O3 -I$(LUA_INC) -fPIC
+CFLAGS          += $(CWARNS) -I$(LUA_INC) -fPIC
 LIB_OPTION      := -shared
 
 SONAME          := core.so
@@ -26,13 +26,13 @@ $(SONAME):
 	ln -s $(SONAMEV) $@
 
 $(LIBRARY): $(OBJ)
-	$(CC) $(CFLAGS) $(LIB_OPTION) -o $(LIBRARY) $(OBJ) -lc
+	$(CC) $(LDFLAGS) $(LIB_OPTION) -o $(LIBRARY) $(OBJ) -lc
 
 install:
-	mkdir -p $(LUA_LIBDIR)
-	cp $(SONAME) $(LUA_LIBDIR)
-	mkdir -p $(LUA_SHARE)
-	cp $(FILES) $(LUA_SHARE)
+	mkdir -p $(DESTDIR)$(LUA_LIBDIR)
+	cp $(SONAME) $(DESTDIR)$(LUA_LIBDIR)
+	mkdir -p $(DESTDIR)$(LUA_SHARE)
+	cp $(FILES) $(DESTDIR)$(LUA_SHARE)
 
 clean:
 	$(RM) $(LIBRARY) $(SONAMEV) $(SONAME) *.o