svn commit: r254217 - head/sys/conf

[Glen Barber]

On Wed, Aug 14, 2013 at 04:36:25AM +0900, Hiroki Sato wrote:
> Glen Barber <gjb at FreeBSD.org> wrote
>   in <20130813175335.GR2432 at glenbarber.us>:
> 
> gj> On Tue, Aug 13, 2013 at 11:31:52AM -0600, Ian Lepore wrote:
> gj> > I'm not even sure what $0 *should* expand to in a script that was
> gj> > sourced in.  The manpage doesn't say anything meaningful to me about it.
> gj> > Maybe it's a kind of "indeterminate results" thing which is pretty much
> gj> > what we're seeing.
> gj> >
> gj>
> gj> When the file is sourced, it should expand to the name of the file
> gj> sourcing the file.
> 
>  It is sourced in the osreldate.h target in Makefile, so $0 will be
>  /bin/sh.  Why $0 is used here in the first place?  The previous
>  version used $SYSDIR and it looks more reasonable to me.
> 

$0 is used to speed up execution of svnversion when evaluating if the
${svnversion} is compatible with the tree.  Rather than running on the
entire tree, $0 should only be run on a single file.

But, I am at the point now of being ready to revert all these changes
back to the original newvers.sh before I added svnliteversion...

Glen

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