Re: $CHECK can't be overridden

[Keith Owens <kaos@ocs.com.au>]

Dave Jones (on Thu, 22 Mar 2007 01:37:14 -0400) wrote:
>On Thu, Mar 22, 2007 at 04:26:39PM +1100, Keith Owens wrote:
> > Dave Jones (on Thu, 22 Mar 2007 01:15:25 -0400) wrote:
> > >make help implies that supplying $CHECK on the command line
> > >should override sparse as the checker used when building with C=1
> > >Yet, this doesn't seem to be the case.
> > >
> > >This would be useful for cases where for eg, sparse isn't in
> > >the $PATH, allowing an explicit path to the executable to be
> > >passed in automated build environments.
> > 
> > Works for me.
> > 
> > # make C=1 CHECK=foo
>
>Ah, my bad. I was thinking it was an environment var rather
>than a makefile var.  I was using 'CHECK=foo make bzImage C=1'

The default for 'make' is that environment variables do _not_ override
variables defined in the Makefiles.  You can change that behaviour with
the -e flag, 'CHECK=foo make -e bzImage C=1' should work.  'info make'
recommends against using -e, changing environments can lead to
unexpected side effects.