Makefile cleanups to better support concurrent make.

tgt-null/Makefile.in

@@ -16,7 +16,7 @@
 #    59 Temple Place - Suite 330
 #    Boston, MA 02111-1307, USA
 #
-#ident "$Id: Makefile.in,v 1.7 2002/11/05 02:14:41 steve Exp $"
+#ident "$Id: Makefile.in,v 1.8 2003/02/27 22:13:22 steve Exp $"
 #
 #
 SHELL = /bin/sh
@@ -44,10 +44,12 @@ CXXFLAGS = @CXXFLAGS@
 CFLAGS = @CFLAGS@
 LDFLAGS = @LDFLAGS@
 
-all: null.tgt
+all: dep null.tgt
+
+dep:
+	mkdir dep
 
 %.o: %.c
-	@[ -d dep ] || mkdir dep
 	$(CC) -Wall -I$(srcdir)/.. $(CPPFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 
@@ -66,7 +68,7 @@ null.tgt: $O $(TGTDEPLIBS)
 	$(CC) @shared@ -o $@ $O $(TGTLDFLAGS)
 
 clean:
-	rm -f *.o dep/*.d null.tgt
+	rm -rf *.o dep null.tgt
 
 distclean: clean
 	rm -f Makefile config.status config.log config.cache