--- ./Makefile.orig	2012-01-19 16:01:21.000000000 +0100
+++ ./Makefile	2014-03-06 08:55:15.940151118 +0100
@@ -52,13 +52,9 @@
 LIBSFB  =       $(LIBS) -lncurses
 LIBSFBONLY  =   $(IMGLIBS) -lm -lncurses
 
-.if !defined(PREFIX)
-PREFIX = /usr/local
-.endif
+PREFIX ?= /usr/local
 
-.if !defined(X11BASE)
-X11BASE = /usr/X11R6
-.endif
+X11BASE = ${LOCALBASE}
 
 # Please adjust this, if You get errors while compiling iiview
 INCPATH =       -I$(PREFIX)/include -I$(X11BASE)/include \
@@ -110,8 +106,9 @@
 	rm -f $(OBJS) $(OBJSFB) main.fbo *~
 
 install:
-	install -m 755 $(EXECNAME) $(PREFIX)/bin
-	install -m 755 ./man/man1/iiview.1.gz $(PREFIX)/man/man1
+	strip $(EXECNAME)
+	install -m 755 $(EXECNAME) $(DESTDIR)$(PREFIX)/bin
+	install -m 755 ./man/man1/iiview.1.gz $(DESTDIR)$(MANPREFIX)/man/man1
 
 main.o: common.h filelist.h modules.h xsupport.h fbsupport.h main.c
 	$(CC) $(DEFS) $(OPTS) $(WARN) -c -o main.o $(INCPATH) main.c