From 5f4272cc06a20d1bf5da7359d803d86a77a3a723 Mon Sep 17 00:00:00 2001 From: Daniel Filipe Date: Fri, 30 Mar 2018 01:04:00 -0400 Subject: [PATCH] Features: Record for VS 2017 through 15.6 VS 15.3 has more features than we recorded in commit v3.7.0-rc1~156^2~2 (Features: Record features for VS 15 Preview 4, 2016-09-05). While at it, update comments and simplify some cases. --- Modules/Compiler/MSVC-CXX-FeatureTests.cmake | 38 +++++++++----------- 1 file changed, 16 insertions(+), 22 deletions(-) diff --git a/Modules/Compiler/MSVC-CXX-FeatureTests.cmake b/Modules/Compiler/MSVC-CXX-FeatureTests.cmake index 596958668f..9c604f202c 100644 --- a/Modules/Compiler/MSVC-CXX-FeatureTests.cmake +++ b/Modules/Compiler/MSVC-CXX-FeatureTests.cmake @@ -1,15 +1,20 @@ - -# 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 -# http://blogs.msdn.com/b/vcblog/archive/2015/04/29/c-11-14-17-features-in-vs-2015-rc.aspx -# http://blogs.msdn.com/b/vcblog/archive/2015/06/19/c-11-14-17-features-in-vs-2015-rtm.aspx - +# Reference: https://docs.microsoft.com/en-us/cpp/visual-cpp-language-conformance +# https://blogs.msdn.microsoft.com/vcblog/2015/06/19/c111417-features-in-vs-2015-rtm/ +# https://blogs.msdn.microsoft.com/vcblog/2013/12/02/c1114-core-language-features-in-vs-2013-and-the-nov-2013-ctp/ +# https://blogs.msdn.microsoft.com/vcblog/2011/09/12/c11-features-in-visual-c-11/ set(_cmake_oldestSupported "_MSC_VER >= 1600") -# VS version 15 (not 2015) introduces support for aggregate initializers. +# VS 2017 v15.3 fixes support for incomplete decltypes +# https://docs.microsoft.com/en-us/cpp/cpp-conformance-improvements-2017#update_153 +set(_cmake_feature_test_cxx_decltype_incomplete_return_types "_MSC_VER >= 1911") + +set(MSVC_2017 "_MSC_VER >= 1910") +# VS 2017 introduces support for "N3652 Extended constexpr" +# but as of v15.6 there are still bugs in the implementation +#set(_cmake_feature_test_cxx_relaxed_constexpr "${MSVC_2017}") + +# VS 2017 Preview introduces support for aggregate initializers. set(_cmake_feature_test_cxx_aggregate_default_initializers "_MSC_FULL_VER >= 190024406") # VS 2015 Update 2 introduces support for variable templates. @@ -48,7 +53,6 @@ set(_cmake_feature_test_cxx_reference_qualified_functions "${MSVC_2015}") # lists this as 'partial' in 2013 set(_cmake_feature_test_cxx_deleted_functions "${MSVC_2015}") -set(MSVC_2013_v30723 "_MSC_FULL_VER >= 180030723") # http://blogs.msdn.com/b/vcblog/archive/2014/11/17/c-11-14-17-features-in-vs-2015-preview.aspx # Note 1. While previous version of VisualStudio said they supported these # they silently produced bad code, and are now marked as having partial @@ -56,7 +60,7 @@ set(MSVC_2013_v30723 "_MSC_FULL_VER >= 180030723") # in MSVC 2015, so support the feature for that version, assuming that is true. # The blog post also says that VS 2013 Update 3 generates an error in cases # that previously produced bad code. -set(_cmake_feature_test_cxx_generalized_initializers "${MSVC_2013_v30723}") +set(_cmake_feature_test_cxx_generalized_initializers "_MSC_FULL_VER >= 180030723") set(MSVC_2013 "_MSC_VER >= 1800") set(_cmake_feature_test_cxx_alias_templates "${MSVC_2013}") @@ -98,20 +102,10 @@ set(_cmake_feature_test_cxx_template_template_parameters "${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_relaxed_constexpr ) -# 'NSDMIs for aggregates' -# set(_cmake_feature_test_cxx_aggregate_default_initializers ) - -# 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_2017) set(MSVC_2015) -set(MSVC_2013_v30723) set(MSVC_2013) set(MSVC_2012) set(MSVC_2010)