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16 lines
735 B
Plaintext
16 lines
735 B
Plaintext
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# 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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