multilib and with/without exceptionsand rtti

[Jim Wilson]

Henning Baldersheim wrote:
> It worked well when I added the fexception/fno-exception option. However 
> I would like to use the pair -fexceptions -frtti and -fno-exceptions 
> -fno-rtti.

The multilib support isn't designed to solve this problem.  It works 
only for single options.

I think you can sort of get the behaviour you want if you use 
MULTILIB_MATCHES to map the -f{,no-}rtti options to -f{,no-}exceptions, 
and then hack the specs to force rtti on if exceptions is on, and vice 
versa, and likewise for the no- versions of the options.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com