$NetBSD: patch-Makefile,v 1.2 2016/09/29 12:09:48 joerg Exp $

- Add DESTDIR support.
- Support install(1) that does not create directories automatically.
- Fix linking against freetype.

--- Makefile.orig	2015-12-03 16:45:59.000000000 +0000
+++ Makefile
@@ -6,6 +6,7 @@
 
 # installation prefix
 PREFIX=/usr/local
+DESTDIR?=
 
 ########################################
 #
@@ -16,8 +17,8 @@ PREFIX=/usr/local
 OPTIMIZE=#-O6 -march=pentium4 -mfpmath=sse -fomit-frame-pointer -funroll-loops
 PROFILER=#-pg
 DEBUG=#-ggdb
-CXXFLAGS=-pipe -Wall $(OPTIMIZE) $(DEBUG) `sdl-config --cflags` -DPREFIX=L\"$(PREFIX)\" $(PROFILER)
-LNFLAGS=-pipe -lSDL_ttf -lfreetype `sdl-config --libs` -lz -lSDL_mixer $(PROFILER)
+CXXFLAGS+=-pipe -Wall $(OPTIMIZE) $(DEBUG) `sdl-config --cflags` -DPREFIX=L\"$(PREFIX)\" $(PROFILER)
+LNFLAGS= ${COMPILER_RPATH_FLAG}${X11BASE}/lib -lSDL_ttf -lfreetype `sdl-config --libs` -lz -lSDL_mixer $(PROFILER)
 INSTALL=install
 
 TARGET=einstein
@@ -61,8 +62,10 @@ run: $(TARGET)
 	./$(TARGET)
 
 install: $(TARGET)
-	$(INSTALL) -s -D $(TARGET) $(PREFIX)/bin/$(TARGET)
-	$(INSTALL) -D einstein.res $(PREFIX)/share/einstein/res/einstein.res
+	$(INSTALL) -d $(DESTDIR)$(PREFIX)/bin
+	$(INSTALL) -d $(DESTDIR)$(PREFIX)/share/einstein/res
+	$(INSTALL) -s $(TARGET) $(DESTDIR)$(PREFIX)/bin/$(TARGET)
+	$(INSTALL) einstein.res $(DESTDIR)$(PREFIX)/share/einstein/res/einstein.res
 	
 # DO NOT DELETE THIS LINE -- make depend depends on it.