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Features: Add cxx_extern_templates.

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This commit is contained in:
Stephen Kelly 2014-04-04 13:11:37 +02:00
parent 9064f78b0c
commit 32c2acd65c
4 changed files with 20 additions and 0 deletions
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5
Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
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@ -52,6 +52,11 @@ The features known to this version of CMake are:
.. _N2437: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf .. _N2437: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf
``cxx_extern_templates``
Extern templates, as defined in N1987_.
.. _N1987: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1987.htm
``cxx_final`` ``cxx_final``
Override control ``final`` keyword, as defined in N2928_. Override control ``final`` keyword, as defined in N2928_.

2
Modules/Compiler/GNU-CXX-FeatureTests.cmake
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@ -53,4 +53,6 @@ set(GNU43_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
set(_cmake_feature_test_cxx_decltype "${GNU43_CXX11}") set(_cmake_feature_test_cxx_decltype "${GNU43_CXX11}")
set(_cmake_feature_test_cxx_rvalue_references "${GNU43_CXX11}") set(_cmake_feature_test_cxx_rvalue_references "${GNU43_CXX11}")
set(_cmake_feature_test_cxx_static_assert "${GNU43_CXX11}") set(_cmake_feature_test_cxx_static_assert "${GNU43_CXX11}")
# TODO: Should be supported since GNU 3.4?
set(_cmake_feature_test_cxx_extern_templates "${_oldestSupported} && __cplusplus >= 201103L")
set(_oldestSupported) set(_oldestSupported)

1
Source/cmMakefile.cxx
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@ -50,6 +50,7 @@
F(cxx_delegating_constructors) \ F(cxx_delegating_constructors) \
F(cxx_deleted_functions) \ F(cxx_deleted_functions) \
F(cxx_explicit_conversions) \ F(cxx_explicit_conversions) \
F(cxx_extern_templates) \
F(cxx_final) \ F(cxx_final) \
F(cxx_inheriting_constructors) \ F(cxx_inheriting_constructors) \
F(cxx_lambdas) \ F(cxx_lambdas) \

12
Tests/CompileFeatures/cxx_extern_templates.cpp Normal file
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@ -0,0 +1,12 @@
template<typename T>
void someFunc()
{
}
extern template void someFunc<int>();
void otherFunc()
{
someFunc<int>();
}