MKSHELL=rc<$PF9/$objtype/mkfile # make sure $buildprogs are availablebuildprogs=lex yacc mk buildprogpaths=${buildprogs:%=$PF9/$cputype/bin/%$PROGSFX} default:V:  ,$objtype-prereqs-built ,$objtype-prereqs-built: $buildprogpaths	date > $target $buildprogpaths:	rm -f $target	for (i in 9 bio regexp draw mux)		@{cd lib$i && mk && mk clean}		cd cmd	@{cd mk; mk safeinstall; mk clean}		# mk must be built before the stuff below, because	# it is slightly patched against the original version, which	# would fail at some rc constructs within the mkfile	mk yacc.install	@{cd lex; mk install; mk clean}  clean:V:	rm -f $buildprogpaths