[tlbuild] dvibook failure on Cygwin

[Peter Breitenlohner]

On Thu, 23 Feb 2012, Ken Brown wrote:

> I just did a test build of the trunk (rev 25482) on Cygwin.  The build went 
> smoothly, but the dvibook test failed with a segfault:
>
> ...
>
> This may well be a Cygwin problem.  But before digging further, I'd like to 
> know whether anyone is seeing problems on other platforms.

Hi Ken,

these tests were introduced after the TL11 release, so it is quite possible
that the Cygwin versions of dvibook and dvitodvi never worked.  Can you
test that?

Dvibook and dvitodvi use SeekFile() from seek.c containing Cygwin specific
code and it is quite possible that this code doesn't work as it does on
Windows.  Please have a look.

Regards
Peter