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15 lines
735 B
15 lines
735 B
# Checks whether the compiler implements namespaces |
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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 { |
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namespace Inner { int i = 0; }}], |
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[using namespace Outer::Inner; return i;], |
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ac_cv_cxx_namespaces=yes, |
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ac_cv_cxx_namespaces=no) |
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AC_LANG_RESTORE]) |
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if test "$ac_cv_cxx_namespaces" = yes; then |
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AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces]) |
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fi])
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