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  • Committer: Monty Taylor
  • Date: 2010-04-22 02:46:23 UTC
  • mto: (1497.3.4 enable-dtrace)
  • mto: This revision was merged to the branch mainline in revision 1527.
  • Revision ID: mordred@inaugust.com-20100422024623-4urw8fi8eraci08p
https://launchpad.net/bugs/561683
Don't overwrite the pandora_vc_revinfo file if we don't have new
authoratative information.

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plugin/innobase/plugin.ac
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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# St, Fifth Floor, Boston, MA 02110-1301 USA
 
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 
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# Place, Suite 330, Boston, MA 02111-1307 USA
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#
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AC_DEFUN([AC_INNODB_ACTIONS],[
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  PANDORA_REQUIRE_FLEX
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  AC_REQUIRE([AC_PROG_LEX])
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  AC_REQUIRE([AC_FUNC_MMAP])
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  AC_CHECK_LIB(rt, aio_read, [innodb_system_libs="-lrt"])
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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])