--- Makefile.in.orig	2008-03-06 06:58:16.000000000 +0900
+++ Makefile.in	2014-02-01 11:53:20.000000000 +0900
@@ -15,9 +15,9 @@
 bindir = $(exec_prefix)
 libdir = $(prefix)/lib
 infodir = $(prefix)/info
-#mandir = @mandir@
-mandir = /usr/share/man
-creditsfile = @CREDITSFILE@
+mandir = @mandir@
+#mandir = /usr/share/man
+creditsfile = $(prefix)/CREDITS
 distversion = 2.1.1.0
 
 @SET_MAKE@
@@ -65,8 +65,8 @@
 	for i in levels/*.xgl; do $(INSTALL) $$i $(DESTDIR)$(prefix)/$$i ; done
 	for i in sounds/*.raw; do $(INSTALL) $$i $(DESTDIR)$(prefix)/$$i ; done
 	$(INSTALL) CREDITS $(DESTDIR)$(creditsfile)
-	$(INSTALL) xgalaga.6x.gz $(mandir)/man6/xgalaga.6x.gz
-	chmod 644 $(mandir)/man6/xgalaga.6x.gz
+	$(INSTALL) xgalaga.6x.gz $(DESTDIR)$(mandir)/man6/xgalaga.6x.gz
+#	chmod 644 $(mandir)/man6/xgalaga.6x.gz
 #	touch $(prefix)/scores
 #	chmod 666 $(prefix)/scores
 #       chown ${GAMEOWN}:${GAMEGRP} $(prefix)/scores
@@ -74,14 +74,14 @@
 #       chmod ${GAMEMODE} $(bindir)/$(TARGET)
 #       chmod ${GAMEDATAMODE} $(prefix)/scores
 
-subdirs:
-	for i in $(SUBDIRS); do cd $$i ; make ; done
+$(SUBDIRS)::
+	$(MAKE) -C $@
 
-$(TARGET): subdirs $(OBJS)
+$(TARGET): $(SUBDIRS) $(OBJS)
 	$(RM) $(TARGET)
 	$(CC) $(LDFLAGS) -o $(TARGET) $(OBJS) $(LIBS)
 
-$(TARGET2): subdirs $(OBJS_HYPER)
+$(TARGET2): $(SUBDIRS) $(OBJS_HYPER)
 	$(RM) $(TARGET2)
 	$(CC) $(LDFLAGS) -o $(TARGET2) $(OBJS_HYPER) $(LIBS)
 
@@ -98,17 +98,17 @@
 	$(RM) core *.o $(OBJS) $(OBJS_HYPER) $(TARGET) $(TARGET2) $(MANPAGE)
 
 dist: clean
-	cd libsprite;make clean
+	$(MAKE) -C libsprite clean
 	if test -d xgalaga-$(distverson) ; then echo -n; else  mkdir xgalaga-$(distversion); fi
 	cp -rf $(SRCS) configure *.in *.sub *.guess images sounds xgal.sndsrv.*.c libsprite README* INSTALL CHANGES CREDITS xgalaga.6x *.h install-sh levels mkimgsrc* mkinstalldirs xgalaga-$(distversion)
-	cd xgalaga-$(distversion); rm -f config.h
-	cd xgalaga-$(distversion)/libsprite; make distclean ; rm -rf CVS
+	rm -f xgalaga-$(distversion)/config.h
+	$(MAKE) -C xgalaga-$(distversion)/libsprite distclean
 	find xgalaga-$(distversion) -name "CVS" -exec rm -rf {} \; -prune
 	tar czvf xgalaga-$(distversion).tar.gz xgalaga-$(distversion)
 
 distclean: clean
 	$(RM) Makefile config.h config.status config.cache config.log
-	cd libsprite;$(MAKE) distclean
+	$(MAKE) -C libsprite distclean
 
 depend:
 	makedepend $(CFLAGS) $(SRCS)