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[v3] fix bootstrap/54419

From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
To: "libstdc++" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Cc: Ulrich Drepper <drepper at gmail dot com>, "Dominique d'Humieres" <dominiq at lps dot ens dot fr>, Jack Howarth <howarth at bromo dot med dot uc dot edu>
Date: Sun, 9 Sep 2012 18:30:07 +0100
Subject: [v3] fix bootstrap/54419

I've committed the patch from
http://gcc.gnu.org/ml/gcc-patches/2012-09/msg00466.html (with some
fixes to the changelog entry)

    2012-09-09  Ulrich Drepper  <drepper@gmail.com>
            Dominique d'Humieres  <dominiq@lps.ens.fr>
            Jack Howarth  <howarth@bromo.med.uc.edu>

        PR bootstrap/54419
        * acinclude.m4: Define GLIBCXX_CHECK_X86_RDRAND.
        * configure.ac: Use GLIBCXX_CHECK_X86_RDRAND to test for rdrand
        support in assembler.
        * src/c++11/random.cc (__x86_rdrand): Depend on _GLIBCXX_X86_RDRAND.
        (random_device::_M_init): Likewise.
        (random_device::_M_getval): Likewise.
        * configure: Regenerated.
        * config.h.in: Regenerated.

Tested x86_64-linux and committed to trunk.

Attachment: patch.txt
Description: Text document

Follow-Ups:
- Re: [v3] fix bootstrap/54419
  - From: Gerald Pfeifer

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