Re: better RSYNC mirroring , for .debs and others

[Marcus Brinkmann <Marcus.Brinkmann@ruhr-uni-bochum.de>]

On Thu, Mar 09, 2000 at 12:46:05PM -0700, Jason Gunthorpe wrote:
> 
> On Thu, 9 Mar 2000, David Starner wrote:
> 
> > I'm not arguing the rest of your points, but I'm curious about 
> > this one. IIRC, the last thing a full bootstrap of GCC does,
> > after building stage one binaries with the native compiler,
> 
> Hum, It *used* to do this, can't seem to get it to do it today though 
> <oh well>
> 
> IIRC it only applied to debug information, it included timestamps or
> some such.

There is a small header at the beginning of an object file which is
different each time, because it contains a time stamp.

This is why 'make compare' removes the first 16 bytes of the object
files before comparing.

        for file in *$(objext); do \
          tail +16c ./$$file > tmp-foo1; \
          tail +16c stage$$stage/$$file > tmp-foo2 \
            && (cmp tmp-foo1 tmp-foo2 > /dev/null 2>&1 || echo $$file differs >> .bad_compare) || true; \
        done

Marcus

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