28 lines
1.5 KiB
CMake
28 lines
1.5 KiB
CMake
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# Reference: http://gcc.gnu.org/projects/cxx0x.html
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set(_oldestSupported "(__GNUC__ * 100 + __GNUC_MINOR__) >= 408")
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# TODO: Should be supported by GNU 4.7
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set(GNU47_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
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set(_cmake_feature_test_cxx_delegating_constructors "${GNU47_CXX11}")
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# NOTE: C++11 was ratified in September 2011. GNU 4.7 is the first minor
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# release following that (March 2012), and the first minor release to
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# support -std=c++11. Prior to that, support for C++11 features is technically
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# experiemental and possibly incomplete (see for example the note below about
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# cxx_variadic_template_template_parameters)
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# TODO: Should be supported by GNU 4.6
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set(GNU46_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
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set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
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# TODO: Should be supported by GNU 4.4
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set(GNU44_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
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set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}")
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set(_cmake_feature_test_cxx_variadic_templates "${GNU44_CXX11}")
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# TODO: If features are ever recorded for GNU 4.3, there should possibly
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# be a new feature added like cxx_variadic_template_template_parameters,
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# which is implemented by GNU 4.4, but not 4.3. cxx_variadic_templates is
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# actually implemented by GNU 4.3, but variadic template template parameters
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# 'completes' it, so that is the version we record as having the variadic
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# templates capability in CMake. See
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# http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2555.pdf
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set(_oldestSupported)
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