Features: Record for MSVC 2010-2015

Also, in WCDH add MSVC Compatibility for cxx_align{of,as}.

Co-Author: Stephen Kelly <steveire@gmail.com>
Co-Author: Brad King <brad.king@kitware.com>

2 files changed, 112 insertions, 0 deletions

diff --git a/Modules/Compiler/MSVC-CXX-FeatureTests.cmake b/Modules/Compiler/MSVC-CXX-FeatureTests.cmake
new file mode 100644
index 0000000..c770211
--- /dev/null
+++ b/Modules/Compiler/MSVC-CXX-FeatureTests.cmake
@@ -0,0 +1,106 @@
+
+# Reference: http://msdn.microsoft.com/en-us/library/vstudio/hh567368.aspx
+# http://blogs.msdn.com/b/vcblog/archive/2013/06/28/c-11-14-stl-features-fixes-and-breaking-changes-in-vs-2013.aspx
+# http://blogs.msdn.com/b/vcblog/archive/2014/11/17/c-11-14-17-features-in-vs-2015-preview.aspx
+# http://www.visualstudio.com/en-us/news/vs2015-preview-vs.aspx
+
+
+set(_cmake_oldestSupported "_MSC_VER >= 1600")
+
+set(MSVC_2015 "_MSC_VER >= 1900")
+set(_cmake_feature_test_cxx_alignas "${MSVC_2015}")
+set(_cmake_feature_test_cxx_alignof "${MSVC_2015}")
+set(_cmake_feature_test_cxx_binary_literals "${MSVC_2015}")
+set(_cmake_feature_test_cxx_decltype_auto "${MSVC_2015}")
+# Digit separators are not available as of VS 2015 Preview, but a footnote
+# says they will be available in the RTM.
+set(_cmake_feature_test_cxx_digit_separators "${MSVC_2015}")
+set(_cmake_feature_test_cxx_func_identifier "${MSVC_2015}")
+# http://blogs.msdn.com/b/vcblog/archive/2014/11/17/c-11-14-17-features-in-vs-2015-preview.aspx
+# Note 1. While previous version of VisualStudio said they supported these
+# they silently produced bad code, and are now marked as having partial
+# support in previous versions. The footnote says the support will be complete
+# in MSVC 2015, so support the feature for that version, assuming that is true.
+set(_cmake_feature_test_cxx_generalized_initializers "${MSVC_2015}")
+set(_cmake_feature_test_cxx_nonstatic_member_init "${MSVC_2015}")
+# Microsoft calls this 'rvalue references v3'
+set(_cmake_feature_test_cxx_defaulted_move_initializers "${MSVC_2015}")
+set(_cmake_feature_test_cxx_generic_lambdas "${MSVC_2015}")
+set(_cmake_feature_test_cxx_inheriting_constructors "${MSVC_2015}")
+set(_cmake_feature_test_cxx_inline_namespaces "${MSVC_2015}")
+set(_cmake_feature_test_cxx_lambda_init_captures "${MSVC_2015}")
+set(_cmake_feature_test_cxx_noexcept "${MSVC_2015}")
+set(_cmake_feature_test_cxx_return_type_deduction "${MSVC_2015}")
+set(_cmake_feature_test_cxx_sizeof_member "${MSVC_2015}")
+set(_cmake_feature_test_cxx_thread_local "${MSVC_2015}")
+set(_cmake_feature_test_cxx_unicode_literals "${MSVC_2015}")
+set(_cmake_feature_test_cxx_unrestricted_unions "${MSVC_2015}")
+set(_cmake_feature_test_cxx_user_literals "${MSVC_2015}")
+set(_cmake_feature_test_cxx_reference_qualified_functions "${MSVC_2015}")
+# "The copies and moves don't interact precisely like the Standard says they
+# should. For example, deletion of moves is specified to also suppress
+# copies, but Visual C++ in Visual Studio 2013 does not."
+# http://blogs.msdn.com/b/vcblog/archive/2014/11/17/c-11-14-17-features-in-vs-2015-preview.aspx
+# lists this as 'partial' in 2013
+set(_cmake_feature_test_cxx_deleted_functions "${MSVC_2015}")
+
+set(MSVC_2013 "_MSC_VER >= 1800")
+set(_cmake_feature_test_cxx_alias_templates "${MSVC_2013}")
+# Microsoft now states they support contextual conversions in 2013 and above.
+# See footnote 6 at:
+# http://blogs.msdn.com/b/vcblog/archive/2014/11/17/c-11-14-17-features-in-vs-2015-preview.aspx
+set(_cmake_feature_test_cxx_contextual_conversions "${MSVC_2013}")
+set(_cmake_feature_test_cxx_default_function_template_args "${MSVC_2013}")
+set(_cmake_feature_test_cxx_defaulted_functions "${MSVC_2013}")
+set(_cmake_feature_test_cxx_delegating_constructors "${MSVC_2013}")
+set(_cmake_feature_test_cxx_explicit_conversions "${MSVC_2013}")
+set(_cmake_feature_test_cxx_raw_string_literals "${MSVC_2013}")
+set(_cmake_feature_test_cxx_uniform_initialization "${MSVC_2013}")
+# Support is documented, but possibly partly broken:
+# https://msdn.microsoft.com/en-us/library/hh567368.aspx
+# http://thread.gmane.org/gmane.comp.lib.boost.devel/244986/focus=245333
+set(_cmake_feature_test_cxx_variadic_templates "${MSVC_2013}")
+
+set(MSVC_2012 "_MSC_VER >= 1700")
+set(_cmake_feature_test_cxx_enum_forward_declarations "${MSVC_2012}")
+set(_cmake_feature_test_cxx_final "${MSVC_2012}")
+set(_cmake_feature_test_cxx_range_for "${MSVC_2012}")
+set(_cmake_feature_test_cxx_strong_enums "${MSVC_2012}")
+
+set(MSVC_2010 "_MSC_VER >= 1600")
+set(_cmake_feature_test_cxx_auto_type "${MSVC_2010}")
+set(_cmake_feature_test_cxx_decltype "${MSVC_2010}")
+set(_cmake_feature_test_cxx_extended_friend_declarations "${MSVC_2010}")
+set(_cmake_feature_test_cxx_extern_templates "${MSVC_2010}")
+set(_cmake_feature_test_cxx_lambdas "${MSVC_2010}")
+set(_cmake_feature_test_cxx_local_type_template_args "${MSVC_2010}")
+set(_cmake_feature_test_cxx_long_long_type "${MSVC_2010}")
+set(_cmake_feature_test_cxx_nullptr "${MSVC_2010}")
+set(_cmake_feature_test_cxx_override "${MSVC_2010}")
+set(_cmake_feature_test_cxx_right_angle_brackets "${MSVC_2010}")
+set(_cmake_feature_test_cxx_rvalue_references "${MSVC_2010}")
+set(_cmake_feature_test_cxx_static_assert "${MSVC_2010}")
+set(_cmake_feature_test_cxx_template_template_parameters "${MSVC_2010}")
+set(_cmake_feature_test_cxx_trailing_return_types "${MSVC_2010}")
+set(_cmake_feature_test_cxx_variadic_macros "${MSVC_2010}")
+
+# Currently unsupported:
+# set(_cmake_feature_test_cxx_constexpr )
+# set(_cmake_feature_test_cxx_relaxed_constexpr )
+# set(_cmake_feature_test_cxx_attributes )
+# set(_cmake_feature_test_cxx_attribute_deprecated )
+# 'NSDMIs for aggregates'
+# set(_cmake_feature_test_cxx_aggregate_default_initializers )
+# set(_cmake_feature_test_cxx_variable_templates )
+
+# In theory decltype incomplete return types was added in 2012
+# but without support for decltype_auto and return type deduction this
+# feature is unusable.  This remains so as of VS 2015 Preview.
+# set(_cmake_feature_test_cxx_decltype_incomplete_return_types )
+
+# Unset all the variables that we don't need exposed.
+# _cmake_oldestSupported is required by WriteCompilerDetectionHeader
+set(MSVC_2015)
+set(MSVC_2013)
+set(MSVC_2012)
+set(MSVC_2010)
diff --git a/Modules/Compiler/MSVC-CXX.cmake b/Modules/Compiler/MSVC-CXX.cmake
new file mode 100644
index 0000000..962aaeb
--- /dev/null
+++ b/Modules/Compiler/MSVC-CXX.cmake
@@ -0,0 +1,6 @@
+# MSVC has no specific language level or flags to change it.
+set(CMAKE_CXX_STANDARD_DEFAULT "")
+
+macro(cmake_record_cxx_compile_features)
+  record_compiler_features(CXX "" CMAKE_CXX_COMPILE_FEATURES)
+endmacro()