Features: Add cxx_constexpr.

This commit is contained in:
Stephen Kelly 2014-03-18 12:53:01 +01:00
parent 10f33eee1d
commit 91289312fa
4 changed files with 14 additions and 0 deletions

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@ -17,6 +17,11 @@ The features known to this version of CMake are:
.. _N1984: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf
``cxx_constexpr``
Constant expressions, as defined in N2235_.
.. _N2235: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2235.pdf
``cxx_delegating_constructors``
Delegating constructors, as defined in N1986_.

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@ -10,6 +10,9 @@ set(_cmake_feature_test_cxx_delegating_constructors "${GNU47_CXX11}")
# support -std=c++11. Prior to that, support for C++11 features is technically
# experiemental and possibly incomplete (see for example the note below about
# cxx_variadic_template_template_parameters)
# TODO: Should be supported by GNU 4.6
set(GNU46_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
# TODO: Should be supported by GNU 4.4
set(GNU44_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}")

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@ -43,6 +43,7 @@
#define FOR_EACH_CXX_FEATURE(F) \
F(cxx_auto_type) \
F(cxx_constexpr) \
F(cxx_delegating_constructors) \
F(cxx_variadic_templates)

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@ -0,0 +1,5 @@
constexpr int getNum()
{
return 42;
}