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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16415 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
611 B
Plaintext
20 lines
611 B
Plaintext
# Check for C++ namespace support. This is from
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# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_namespaces.html
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#
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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_PUSH([C++])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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[[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,
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ac_cv_cxx_namespaces=no)
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AC_LANG_POP([C++])
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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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