purpose of "vpath" for Config.in in Makefile?

[Robert P. J. Day]

On Thu, 2 Mar 2006, Robert P. J. Day wrote:

>
> what is the purpose of the line:
>
>   vpath %/Config.in $(srctree)
>
> in the top-level Makefile?  AFAIK, the vpath directive affects only
> the search path for *dependencies* but, from what i read, all of the
> Config.in files in the source tree are never treated as dependencies.
>
> rather, they're "source"d from that top-level Config.in file which
> doesn't seem to have anything to do with vpath.  or are they being
> used as dependencies somewhere that i just didn't notice?

um ... never mind.  i figured this out.  duh.

rday