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| author | Stephen Kelly <steveire@gmail.com> | 2014-03-18 11:53:01 (GMT) |
|---|---|---|
| committer | Stephen Kelly <steveire@gmail.com> | 2014-04-08 09:05:54 (GMT) |
| commit | 91289312fa9da0807b5c59a78de2c5ad21d6cda1 (patch) | |
| tree | 0ab65d9f39964c899414ae5f08c54fe829206fdc | |
| parent | 10f33eee1dfefa9e5a2ee5cf4946095bf08b19bc (diff) | |
| download | CMake-91289312fa9da0807b5c59a78de2c5ad21d6cda1.zip CMake-91289312fa9da0807b5c59a78de2c5ad21d6cda1.tar.gz CMake-91289312fa9da0807b5c59a78de2c5ad21d6cda1.tar.bz2 | |
Features: Add cxx_constexpr.
| -rw-r--r-- | Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst | 5 | ||||
| -rw-r--r-- | Modules/Compiler/GNU-CXX-FeatureTests.cmake | 3 | ||||
| -rw-r--r-- | Source/cmMakefile.cxx | 1 | ||||
| -rw-r--r-- | Tests/CompileFeatures/cxx_constexpr.cpp | 5 |
4 files changed, 14 insertions, 0 deletions
diff --git a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst index b6b2b35..aa314cd 100644 --- a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst +++ b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst @@ -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_. diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake index 6baa463..5321eda 100644 --- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake +++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake @@ -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}") diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx index 52f4fb6..cc1dfa1 100644 --- a/Source/cmMakefile.cxx +++ b/Source/cmMakefile.cxx @@ -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) diff --git a/Tests/CompileFeatures/cxx_constexpr.cpp b/Tests/CompileFeatures/cxx_constexpr.cpp new file mode 100644 index 0000000..570c10f --- /dev/null +++ b/Tests/CompileFeatures/cxx_constexpr.cpp @@ -0,0 +1,5 @@ + +constexpr int getNum() +{ + return 42; +} |