--- Makefile.orig	2003-08-22 06:36:42.000000000 +0800
+++ Makefile	2013-11-15 23:14:43.000000000 +0800
@@ -6,7 +6,7 @@ OBJECTS	=	monitord.o mail.o
 
 TARGET =	monitord
 
-MANDIR = 	/usr/local/man
+MANDIR = 	$(PREFIX)/man
 
 .SUFFIXES:
 .SUFFIXES: .c .o
@@ -24,10 +24,8 @@ clean:
 
 all: $(TARGET)
 
-$(TARGET): $(OBJECTS)
-	$(CC) $(OBJECTS) -o $(TARGET)
 
 install:
-	$(INSTALL) -cs $(TARGET) /usr/local/sbin
-	$(INSTALL) -c $(TARGET).conf.sample /usr/local/etc
-	$(INSTALL) -c $(TARGET).8 $(MANDIR)/man8
+	$(INSTALL) -cs $(TARGET) $(DESTDIR)$(PREFIX)/sbin
+	$(INSTALL) -c $(TARGET).conf.sample $(DESTDIR)$(PREFIX)/etc
+	$(INSTALL) -c $(TARGET).8 $(DESTDIR)$(MANDIR)/man8