'Make' rules work on LOCAL disk, not on NFS mount

[Steven Souza]

Can some kind soul tell me why this doesn't work:
-------------------------------------------------
1% df -v
Mount Dir  Filesystem              blocks      used      free   %used
/          /dev/root                96038     76762     19276    79%
/u6        optigfx:/u6             489616    230756    258860    47%
2% cd /u6/foo
3% cat Makefile
all: t.o
	cc t.o
	@echo done...

.c.o:
	cc -c $<

4% cat t.c
main() {}
5% make
Make:  Don't know how to make t.o.  Stop.
6%


...But this does:
-----------------
6% cp Makefile t.c /tmp
7% cd /tmp
8% make
	cc -c t.c
t.c
	cc t.o
done...
9%

???

Many thanks!
--
Steve Souza	Optigraphics Corp.	souza at optigfx.com	619/292-6060