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  • Committer: Brian Aker
  • Date: 2010-10-20 20:26:18 UTC
  • mfrom: (1859.2.13 refactor)
  • Revision ID: brian@tangent.org-20101020202618-9222n39lm329urv5
Merge for Brian 

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plugin/innobase/plugin.ac
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#
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# Copyright (C) 2006, 2009, Innobase Oy. All Rights Reserved.
 
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# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
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# 
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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AC_DEFUN([AC_INNODB_ACTIONS],[
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  PANDORA_REQUIRE_FLEX
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  PANDORA_HAVE_LIBAIO
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  AC_REQUIRE([AC_FUNC_MMAP])
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  # http://bugs.opensolaris.org/bugdatabase/printableBug.do?bug_id=6478684
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  # We use ib_ prefix to avoid collisoins if this code is added to
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  # mysql's configure.in.
 
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  dnl Must be done once we turn on warnings and such
 
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  save_CFLAGS="${CFLAGS}"
 
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  CFLAGS="${AM_CFLAGS} ${CFLAGS}"
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  AC_RUN_IFELSE([AC_LANG_PROGRAM([[]],[[
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        __asm__ __volatile__ ("pause");
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    ]])],[
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      ac_cv_plugin_innodb_has_pause=no
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    ])
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  ])
 
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  CFLAGS="${save_CFLAGS}"
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  AS_IF([test "${ac_cv_plugin_innodb_has_pause}" = "yes"],[
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    AC_DEFINE([IB_HAVE_PAUSE_INSTRUCTION], [1],
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              [Does x86 PAUSE instruction exist])