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Date: Tue, 07 Jun 2011 19:17:00 -0000
From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
cc: Paolo Bonzini <bonzini@gnu.org>, gcc-patches@gcc.gnu.org,     Ralf Wildenhues <Ralf.Wildenhues@gmx.de>,     Mike Stump <mikestump@comcast.net>, "Loren J. Rittle" <ljrittle@acm.org>,     Kai Tietz <ktietz@redhat.com>, Dave Korn <dave.korn.cygwin@gmail.com>,     Jason Thorpe <thorpej@netbsd.org>,     Krister Walfridsson <krister.walfridsson@gmail.com>,     Uros Bizjak <ubizjak@gmail.com>, Richard Henderson <rth@redhat.com>,     Eric Botcazou <ebotcazou@adacore.com>
Subject: Re: [build] Move ENABLE_EXECUTE_STACK to toplevel libgcc
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On Tue, 7 Jun 2011, Rainer Orth wrote:

> > So my view is that you should define __LIBGCC_TRAMPOLINE_SIZE__, only if 
> > -fbuilding-libgcc.
> 
> I can give it a try if I can figure out how to define -fbuilding-libgcc
> via the option handling machinery.  I just want to avoid having to

That should be no more than

; Define extra predefined macros for use in libgcc.
fbuilding-libgcc
C ObjC C++ ObjC++ Undocumented Var(flag_building_libgcc)

in c.opt.

-- 
Joseph S. Myers
joseph@codesourcery.com