ForceAnnealing_goodresults
ForceAnnealing_tocheck
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| [084729c] | 1 | dnl @synopsis AC_CXX_NAMESPACES
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| 2 | dnl
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| 3 | dnl If the compiler can prevent names clashes using namespaces, define
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| 4 | dnl HAVE_NAMESPACES.
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| 5 | dnl
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| 6 | dnl @category Cxx
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| 7 | dnl @author Todd Veldhuizen
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| 8 | dnl @author Luc Maisonobe <luc@spaceroots.org>
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| 9 | dnl @version 2004-02-04
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| 10 | dnl @license AllPermissive
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| 11 |
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| 12 | AC_DEFUN([AC_CXX_NAMESPACES],
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| 13 | [AC_CACHE_CHECK(whether the compiler implements namespaces,
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| 14 | ac_cv_cxx_namespaces,
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| 15 | [AC_LANG_SAVE
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| 16 | AC_LANG_CPLUSPLUS
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| 17 | AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
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| 18 | [using namespace Outer::Inner; return i;],
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| 19 | ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
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| 20 | AC_LANG_RESTORE
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| 21 | ])
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| 22 | if test "$ac_cv_cxx_namespaces" = yes; then
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| 23 | AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
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| 24 | fi
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| 25 | ])
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