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Re: [Ada] multilib patch / -imultilib and language drivers

From: Paolo Bonzini <bonzini at gnu dot org>
To: laurent at guerby dot net
Cc: Paolo Bonzini <paolo dot bonzini at gmail dot com>, Arnaud Charlet <charlet at adacore dot com>, Olivier Hainque <hainque at adacore dot com>, gcc <gcc at gcc dot gnu dot org>, Joel Sherrill <joel dot sherrill at oarcorp dot com>
Date: Tue, 22 Jul 2008 22:44:14 +0200
Subject: Re: [Ada] multilib patch / -imultilib and language drivers
References: <1216584523.18723.1218.camel@localhost> <48841268.9040104@gnu.org> <1216622175.18723.1231.camel@localhost> <1216725899.13357.23.camel@localhost> <4885C766.30504@gnu.org> <1216749530.13357.35.camel@localhost>

What triggers the passing of -imultilib to a language driver?

It is passed together with -isystem, -iprefix and friends when %I is in a spec. I'm sure you can define a new spec function and use it to pass the multilib_dir variable down to the Ada driver (see default_compilers, I guess you have to read some gcc.c).

Once gcc passes this info to gnat1 it will likely be easy to have
gnatmake/bind/link extract it when needed since those tools
call gcc.

I believe you on this. :-)

Paolo

References:
- [Ada] multilib first patch
  - From: Laurent GUERBY
- Re: [Ada] multilib first patch
  - From: Paolo Bonzini
- Re: [Ada] multilib first patch
  - From: Laurent GUERBY
- [Ada] multilib patch take two => multilib build working
  - From: Laurent GUERBY
- Re: [Ada] multilib patch take two => multilib build working
  - From: Paolo Bonzini
- Re: [Ada] multilib patch / -imultilib and language drivers
  - From: Laurent GUERBY

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