--- Makefile
+++ Makefile
@@ -8,16 +8,17 @@
 #        /etc/super-users and /usr/adm/sulog that are defined
 #        separately.
 # 
-DEST=/usr/local
+PREFIX?=/usr/local
+DEST=${DESTDIR}${PREFIX}
 BINDIR=$(DEST)/bin
-MANDIR=$(DEST)/man
+MANDIR=$(DEST)/man/man1
 
 # OPTIONS:
 # There are a number of DEFINES that can be used to configure su2.  Please
 # see the source to su2.c for a full listing of all of the available options.
 
 # Standard
-OPTIONS=-DFULLPATH 
+OPTIONS=-DSU2LOGFILE="\"/var/log/su2.log\"" -DSUPERUSERS="\"$(PREFIX)/etc/super-users\"" -DBROKENCUSERID
 
 # m88k
 # OPTIONS=-DFULLPATH -DNOVFORK
@@ -31,12 +32,15 @@
 # Shadow Passwords (Solaris)
 # OPTIONS=-DFULLPATH -DUSE_SHADOW
 
-CFLAGS=-O $(OPTIONS)
+CFLAGS+= $(OPTIONS)
+LDLIBS=-lcrypt -lcompat
 
 su2:	su2.c
 
+all:	su2
+
 install: su2
-	install -c -m 4711 -o root su2 $(BINDIR)/su2
+	install -c -s -m 4711 su2 $(BINDIR)/su2
 	install -c su2.man $(MANDIR)/su2.1
 
 clean: