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Re: enable-build-with-cxx bootstrap compare broken by r149964

From: Jason Merrill <jason at redhat dot com>
To: Jerry Quinn <jlquinn at optonline dot net>
Cc: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>, Pedro Lamarão <pedro dot lamarao at ccppbrasil dot org>
Date: Thu, 27 Aug 2009 00:24:24 -0400
Subject: Re: enable-build-with-cxx bootstrap compare broken by r149964
References: <1250345548.19163.155.camel@cerberus.qb5.org>

On 08/15/2009 10:12 AM, Jerry Quinn wrote:

Building with --enable-build-with-cxx fails to bootstrap as follows:

Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
x86_64-unknown-linux-gnu/32/libstdc++-v3/libsupc++/eh_alloc.o differs

>...

Do you know why r149964 makes a difference? The only objects that are listed as differing here are from libstdc++, and changing needs_fake_anon to abort rather than return true doesn't cause any problems building libstdc++. We used anonymous namespaces in the library before this...

I tried doing the bootstrap myself, but build-with-cxx doesn't currently work with glibc 2.10. I guess I could try on a box with an older install, but haven't yet.

Jason

Follow-Ups:
- Re: enable-build-with-cxx bootstrap compare broken by r149964
  - From: Jerry Quinn

References:
- enable-build-with-cxx bootstrap compare broken by r149964
  - From: Jerry Quinn

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