26 lines
749 B
Plaintext
26 lines
749 B
Plaintext
dnl @synopsis AC_CXX_NAMESPACES
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dnl
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dnl If the compiler can prevent names clashes using namespaces, define
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dnl HAVE_NAMESPACES.
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dnl
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dnl @category Cxx
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dnl @author Todd Veldhuizen
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dnl @author Luc Maisonobe <luc@spaceroots.org>
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dnl @version 2004-02-04
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dnl @license AllPermissive
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AC_DEFUN([AC_CXX_NAMESPACES],
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[AC_CACHE_CHECK(whether the compiler implements namespaces,
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ac_cv_cxx_namespaces,
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
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[using namespace Outer::Inner; return i;],
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ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
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AC_LANG_RESTORE
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])
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if test "$ac_cv_cxx_namespaces" = yes; then
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AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
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fi
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])
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