make question

[M.V.S. Ramanath]

Make (on a Sun 3-50/SunOS 3.2) produces the following diagnostic:

$! nulled, predecessor circle

when run on a makefile containing:

a.c: a
	yacc a
	mv y.tab.c a.c

but appears to correctly run yacc and mv. On a VAX running BSD4.2
the diagnostic does not appear. Is this cause for concern? I can
find no reference in the Sun manuals to '$!'. Any explanations ?

ram at uwovax.BITNET  or  ram at julian.UUCP  or  ram at uwocsd.UWO.CDN  or  
...!decvax!utzoo!julian!uwocsd!ram
...!ihnp4!watmath!julian!uwocsd!ram