$NetBSD$

--- include/makefile.orig	2011-02-11 11:09:01.000000000 +0000
+++ include/makefile
@@ -30,10 +30,10 @@
 setup:
 
 install:
-	$(CP) *.ad? $(I_CPN)
-	-$(CP) ../$(BDIR)/static/lib/include/* $(I_LIB)/static
+	$(CP) *.ad? $(DESTDIR)$(I_CPN)
+	-$(CP) ../$(BDIR)/static/lib/include/* $(DESTDIR)$(I_LIB)/static
 ifeq (${ENABLE_SHARED}, true)
-	-$(CP) ../$(BDIR)/relocatable/lib/include/* $(I_LIB)/relocatable
+	-$(CP) ../$(BDIR)/relocatable/lib/include/* $(DESTDIR)$(I_LIB)/relocatable
 endif
 	${MAKE} -C zlib install $(GALL_OPTIONS)
 
