--- Makefile.in.orig	2002-03-07 00:59:37.000000000 +0800
+++ Makefile.in	2014-06-20 16:42:05.475964834 +0800
@@ -25,7 +25,6 @@ CC = @CC@
 INSTALL = @INSTALL@
 DEFS = @DEFS@
 LIBS = @LIBS@
-CFLAGS = -O
 LDFLAGS = -s
 prefix = @prefix@
 
@@ -41,10 +40,10 @@ clean:
 	rm -f *.o
 
 install: $(PROGS)
-	$(INSTALL) -m 0755 aggregate $(prefix)/bin/
-	$(INSTALL) -m 0644 aggregate.1 $(prefix)/man/man1/
-	$(INSTALL) -m 0755 aggregate-ios $(prefix)/bin/
-	$(INSTALL) -m 0644 aggregate-ios.1 $(prefix)/man/man1/
+	$(INSTALL) -m 0755 aggregate $(DESTDIR)$(prefix)/bin/
+	$(INSTALL) -m 0644 aggregate.1 $(DESTDIR)$(prefix)/share/man/man1/
+	$(INSTALL) -m 0755 aggregate-ios $(DESTDIR)$(prefix)/bin/
+	$(INSTALL) -m 0644 aggregate-ios.1 $(DESTDIR)$(prefix)/share/man/man1/
 
 .c.o:
 	$(CC) -c $(CPPFLAGS) $(DEFS) $(CFLAGS) $<