From hintak_leung at yahoo.co.uk  Fri Apr  1 18:16:05 2011
From: hintak_leung at yahoo.co.uk (Hin-Tak Leung)
Date: Fri, 1 Apr 2011 17:16:05 +0100 (BST)
Subject: [Rd] "R CMD check" accepts but "R CMD INSTALL" rejects a tar
	ball.
In-Reply-To: <1D86E8A0-1ECC-4B6F-9F64-0947F0298295@r-project.org>
Message-ID: <239872.58915.qm@web29501.mail.ird.yahoo.com>

--- On Fri, 1/4/11, Simon Urbanek <simon.urbanek at r-project.org> wrote:

> ?untar:
> 
> ? ???You may see warnings from the
> internal implementation such as
> ? ???
> ? ???unsupported entry type 'x'
> 
> ? ???This often indicates an invalid
> archive: entry types ?"A-Z"? are
> ? ???allowed as extensions, but other
> types are reserved (this example
> ? ???is from Mac OS 10.6.3).? The
> only thing you can do with such an
> ? ???archive is to find a ?tar?
> program that handles it, and look
> ? ???carefully at the resulting files.
> 
> 
> So the difference is whether you use external or internal
> tar. 'g' is the global pax header extension so the format
> you created is really pax and not tar (pax defines two new
> types 'x' and 'g').
> 
> Cheers,
> Simon

Okay, thanks. So I guess git-archive --format=tar uses GNU tar extensions (not too surprising). So this is documented... and a documented incompatibilities between different tar/tar extensions. But this behavior of R is a bit unexpected - When R CMD check (which involves installing to a temporary location then loads it and runs various things) works and R CMD INSTALL itself does not.
 
OTOH, should this be reported to the GIT people?


> 
> 
> On Apr 1, 2011, at 10:19 AM, Hin-Tak Leung wrote:
> 
> > I have somehow managed to made a source tar ball which
> "R CMD check" accepts but "R CMD INSTALL" rejects with:
> > 
> > ------------------
> > Warning in untar2(tarfile, files, list, exdir) :
> >? checksum error for entry 'pax_global_header'
> > Error in untar2(tarfile, files, list, exdir) :
> unsupported entry type ?g?
> > ------------------
> > 
> > This happens with both R 2.12.2 (x86 linux) and R svn
> (x86_64 linux). Since R CMD check does install as part of
> the check process, there is probably a bug somewhere. The
> tar ball is uploaded at:
> > 
> > http://htl10.users.sourceforge.net/tmp/Matrix_0.999375-48.tar.gz
> > 
> > and tar -xzpvf works. It is possible to do R CMD
> INSTALL from the untar'ed data, so I am a bit lost at where
> the problem is.
> > 
> > The tar ball was generated with 
> >???git archive ... | gzip >
> package.tar.gz
> > similar to the example at the bottom of git-archive.
> > 
> > It is the result of git cherry-pick trunk at 2658 +
> Matrix-for-R-2.13 at 2657 .
> > 
> > ______________________________________________
> > R-devel at r-project.org
> mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel
> 
>



[Rd] "R CMD check" accepts but "R CMD INSTALL" rejects a tar ball.
Hin-Tak Leung