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Re: [build] Move MD_UNWIND_SUPPORT to toplevel libgcc

From: Paolo Bonzini <bonzini at gnu dot org>
To: Kai Tietz <ktietz70 at googlemail dot com>
Cc: Kai Tietz <ktietz at redhat dot com>, Rainer Orth <ro at cebitec dot uni-bielefeld dot de>, "Joseph S. Myers" <joseph at codesourcery dot com>, Ralf Wildenhues <Ralf dot Wildenhues at gmx dot de>, Douglas Rupp <rupp at gnat dot com>, Tristan Gingold <gingold at adacore dot com>, John David Anglin <dave dot anglin at nrc-cnrc dot gc dot ca>, Steve Ellcey <sje at cup dot hp dot com>, Dave Korn <dave dot korn dot cygwin at gmail dot com>, Mike Stump <mikestump at comcast dot net>, gcc-patches at gcc dot gnu dot org
Date: Tue, 31 May 2011 11:43:47 +0200
Subject: Re: [build] Move MD_UNWIND_SUPPORT to toplevel libgcc
References: <1021155042.308911.1306778047584.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> <4DE4AEA2.6010507@gnu.org> <BANLkTi=VSv1P+KG0EoK++3YJLKZ8SbW5sQ@mail.gmail.com>

On 05/31/2011 11:30 AM, Kai Tietz wrote:

The issue is that in
combination of 32-bit and 64-bit we need to default here to SjLj,

Ok, then what you're testing is actually whether you're using sjlj or dw2 unwinding. config/i386/cygming.h will ensure that this is the same as testing TARGET_BI_ARCH and TARGET_64BIT_DEFAULT.

Then you can just pass EH_MODEL or SHLIB_SONAME down to libgcc via libgcc.mvars, and look at it in libgcc/config.host to pick the appropriate header.

Paolo

References:
- Re: [build] Move MD_UNWIND_SUPPORT to toplevel libgcc
  - From: Kai Tietz
- Re: [build] Move MD_UNWIND_SUPPORT to toplevel libgcc
  - From: Paolo Bonzini
- Re: [build] Move MD_UNWIND_SUPPORT to toplevel libgcc
  - From: Kai Tietz

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