It helps with debug-logging from make anyway (the -d flag), so you get just a few relevant lines of checked rules for each target, instead of a page of irreleva

It helps with debug-logging from make anyway (the -d flag), so you get just a few relevant lines of checked rules for each target, instead of a page of irrelevant stuff like "maybe in SCCS there's a .y file which can generate a .c file which can generate this file ... hmm no I guess not" ... for each target. Come to think of it, it reduces the number of stat() system calls quite significantly, that can make a difference in large builds.