RE: -frepo option on gcc2.95 snapshots

["Jerry Quinn" <jquinn at nortelnetworks dot com>]

>> "ks" == Smithers, Kit <kit.smithers@eds.com> writes:

 ks> Apologies for my first incomplete email. Finger trouble fired off this
 ks> email before I had even started to write it.

 >> I'm trying to use the -frepo option.

 ks> I've found various sources of information on using this option typically
 ks> they follow the form that can be found on:
 ks> http://www.cygnus.com/pubs/gnupro/2_comp/Using_GNU_CC/gccWheres_the_Template
 ks> .html

 ks> Which is helpful but a little short on detail. In particular I'm
 ks> interested in the steps I would take when building a number of static
 ks> libraries (.a) for linking together at a later stage. Can anyone point to
 ks> me to some more useful documentation in this area or offer me some advice
 ks> on its use. I've searched newsgroups and the web for references and
 ks> discussions but I've failed to come up with much beyond the link above
 ks> (or copies of the same text).

Through experience, I find that when you build a library with -frepo, during
the link/instantiation step you have to also link in any c++ libraries it
depends on.  I think this is because a base library may contain an
instantiation so the instantion pass needs to see that to avoid putting
another copy in the dependent library.  Otherwise you get duplicate symbols
when using them together in an application.  Such is life on HP :-(

As an aside, the docs about templates mentions plans for building a sane
hybrid approach to instantiation in the future.  Can anyone in charge shed
some light on what sort of timetable there may be for this feature?  gcc 3.0?
Later? 

Thanks,
-- 
Jerry Quinn                             Tel: (514) 761-8737
jquinn@nortelnetworks.com               Fax: (514) 761-8505
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