From 3228fc5049e72e6d7584a6f3cec6055b8a726817 Mon Sep 17 00:00:00 2001 From: Brad King Date: Mon, 26 Jan 2015 16:42:36 -0500 Subject: Features: Define meaning for no language standard default Define an empty string in CMAKE__STANDARD_DEFAULT to mean that the toolchain has no notion of lanuage standard levels. In this case the _STANDARD[_REQUIRED] properties will have no effect. Update the RunCMake.CompileFeatures test to exclude the LinkImplementationFeatureCycle test when there is no standard default. It can never fail because no use of specific features will adjust the CXX_STANDARD level required for any target since the standard levels have no meaning in this case. --- Help/manual/cmake-developer.7.rst | 4 +- Help/prop_tgt/CXX_STANDARD.rst | 3 +- Help/prop_tgt/CXX_STANDARD_REQUIRED.rst | 3 +- Help/prop_tgt/C_STANDARD.rst | 3 +- Help/prop_tgt/C_STANDARD_REQUIRED.rst | 3 +- Source/cmGeneratorExpressionEvaluator.cxx | 11 +++++- Source/cmLocalGenerator.cxx | 9 ++++- Source/cmMakefile.cxx | 46 +++++++++++++++++++++- Tests/CompileFeatures/CMakeLists.txt | 36 +++++++++-------- Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake | 36 ++++++++++------- .../CompileFeatures/generate_feature_list.cmake | 14 +++++++ 11 files changed, 126 insertions(+), 42 deletions(-) diff --git a/Help/manual/cmake-developer.7.rst b/Help/manual/cmake-developer.7.rst index 65b3a72..e18250c 100644 --- a/Help/manual/cmake-developer.7.rst +++ b/Help/manual/cmake-developer.7.rst @@ -80,7 +80,9 @@ When adding the first supported feature to a particular CompilerId, it is necessary to list support for all features known to cmake (See :variable:`CMAKE_C_COMPILE_FEATURES` and :variable:`CMAKE_CXX_COMPILE_FEATURES` as appropriate), where available for -the compiler. +the compiler. Furthermore, set ``CMAKE__STANDARD_DEFAULT`` to the +default language standard level the compiler uses, or to the empty string +if the compiler has no notion of standard levels (such as ``MSVC``). It is sensible to record the features for the most recent version of a particular CompilerId first, and then work backwards. It is sensible to diff --git a/Help/prop_tgt/CXX_STANDARD.rst b/Help/prop_tgt/CXX_STANDARD.rst index 6329e34..65b30ec 100644 --- a/Help/prop_tgt/CXX_STANDARD.rst +++ b/Help/prop_tgt/CXX_STANDARD.rst @@ -5,7 +5,8 @@ The C++ standard whose features are requested to build this target. This property specifies the C++ standard whose features are requested to build this target. For some compilers, this results in adding a -flag such as ``-std=gnu++11`` to the compile line. +flag such as ``-std=gnu++11`` to the compile line. For compilers that +have no notion of a standard level, such as MSVC, this has no effect. Supported values are ``98``, ``11`` and ``14``. diff --git a/Help/prop_tgt/CXX_STANDARD_REQUIRED.rst b/Help/prop_tgt/CXX_STANDARD_REQUIRED.rst index ac103a4..4e24e5e 100644 --- a/Help/prop_tgt/CXX_STANDARD_REQUIRED.rst +++ b/Help/prop_tgt/CXX_STANDARD_REQUIRED.rst @@ -7,7 +7,8 @@ If this property is set to ``ON``, then the value of the :prop_tgt:`CXX_STANDARD` target property is treated as a requirement. If this property is ``OFF`` or unset, the :prop_tgt:`CXX_STANDARD` target property is treated as optional and may "decay" to a previous standard if the requested is -not available. +not available. For compilers that have no notion of a standard level, such as +MSVC, this has no effect. See the :manual:`cmake-compile-features(7)` manual for information on compile features. diff --git a/Help/prop_tgt/C_STANDARD.rst b/Help/prop_tgt/C_STANDARD.rst index 88ca926..3aa74af 100644 --- a/Help/prop_tgt/C_STANDARD.rst +++ b/Help/prop_tgt/C_STANDARD.rst @@ -5,7 +5,8 @@ The C standard whose features are requested to build this target. This property specifies the C standard whose features are requested to build this target. For some compilers, this results in adding a -flag such as ``-std=gnu11`` to the compile line. +flag such as ``-std=gnu11`` to the compile line. For compilers that +have no notion of a standard level, such as MSVC, this has no effect. Supported values are ``90``, ``99`` and ``11``. diff --git a/Help/prop_tgt/C_STANDARD_REQUIRED.rst b/Help/prop_tgt/C_STANDARD_REQUIRED.rst index a7304f4..743d568 100644 --- a/Help/prop_tgt/C_STANDARD_REQUIRED.rst +++ b/Help/prop_tgt/C_STANDARD_REQUIRED.rst @@ -7,7 +7,8 @@ If this property is set to ``ON``, then the value of the :prop_tgt:`C_STANDARD` target property is treated as a requirement. If this property is ``OFF`` or unset, the :prop_tgt:`C_STANDARD` target property is treated as optional and may "decay" to a previous standard if the requested is -not available. +not available. For compilers that have no notion of a standard level, such as +MSVC, this has no effect. See the :manual:`cmake-compile-features(7)` manual for information on compile features. diff --git a/Source/cmGeneratorExpressionEvaluator.cxx b/Source/cmGeneratorExpressionEvaluator.cxx index 5f246f9..6692a92 100644 --- a/Source/cmGeneratorExpressionEvaluator.cxx +++ b/Source/cmGeneratorExpressionEvaluator.cxx @@ -1370,6 +1370,8 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode { std::vector const& langAvailable = availableFeatures[lit->first]; + const char* standardDefault = context->Makefile + ->GetDefinition("CMAKE_" + lit->first + "_STANDARD_DEFAULT"); for (std::vector::const_iterator it = lit->second.begin(); it != lit->second.end(); ++it) { @@ -1378,6 +1380,12 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode { return "0"; } + if (standardDefault && !*standardDefault) + { + // This compiler has no notion of language standard levels. + // All features known for the language are always available. + continue; + } if (!context->Makefile->HaveStandardAvailable(target, lit->first, *it)) { @@ -1386,8 +1394,7 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode const char* l = target->GetProperty(lit->first + "_STANDARD"); if (!l) { - l = context->Makefile - ->GetDefinition("CMAKE_" + lit->first + "_STANDARD_DEFAULT"); + l = standardDefault; } assert(l); context->MaxLanguageStandard[target][lit->first] = l; diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx index 834f705..af4c950 100644 --- a/Source/cmLocalGenerator.cxx +++ b/Source/cmLocalGenerator.cxx @@ -2207,6 +2207,13 @@ AddCompilerRequirementFlag(std::string &flags, cmTarget* target, { return; } + const char* defaultStd + = this->Makefile->GetDefinition("CMAKE_" + lang + "_STANDARD_DEFAULT"); + if (defaultStd && !*defaultStd) + { + // This compiler has no notion of language standard levels. + return; + } std::string stdProp = lang + "_STANDARD"; const char *standardProp = target->GetProperty(stdProp); if (!standardProp) @@ -2269,8 +2276,6 @@ AddCompilerRequirementFlag(std::string &flags, cmTarget* target, std::find(stds.begin(), stds.end(), standard); assert(stdIt != stds.end()); - const char* defaultStd - = this->Makefile->GetDefinition("CMAKE_" + lang + "_STANDARD_DEFAULT"); std::vector::const_iterator defaultStdIt; if (defaultStd) { diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx index 87e62d7..ba914e1 100644 --- a/Source/cmMakefile.cxx +++ b/Source/cmMakefile.cxx @@ -5253,6 +5253,27 @@ bool cmMakefile:: HaveCStandardAvailable(cmTarget const* target, const std::string& feature) const { + const char* defaultCStandard = + this->GetDefinition("CMAKE_C_STANDARD_DEFAULT"); + if (!defaultCStandard) + { + std::ostringstream e; + e << "CMAKE_C_STANDARD_DEFAULT is not set. COMPILE_FEATURES support " + "not fully configured for this compiler."; + this->IssueMessage(cmake::INTERNAL_ERROR, e.str()); + // Return true so the caller does not try to lookup the default standard. + return true; + } + if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS), + cmStrCmp(defaultCStandard)) == cmArrayEnd(C_STANDARDS)) + { + std::ostringstream e; + e << "The CMAKE_C_STANDARD_DEFAULT variable contains an " + "invalid value: \"" << defaultCStandard << "\"."; + this->IssueMessage(cmake::INTERNAL_ERROR, e.str()); + return false; + } + bool needC90 = false; bool needC99 = false; bool needC11 = false; @@ -5262,7 +5283,7 @@ HaveCStandardAvailable(cmTarget const* target, const char *existingCStandard = target->GetProperty("C_STANDARD"); if (!existingCStandard) { - existingCStandard = this->GetDefinition("CMAKE_C_STANDARD_DEFAULT"); + existingCStandard = defaultCStandard; } if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS), @@ -5331,6 +5352,27 @@ bool cmMakefile::IsLaterStandard(std::string const& lang, bool cmMakefile::HaveCxxStandardAvailable(cmTarget const* target, const std::string& feature) const { + const char* defaultCxxStandard = + this->GetDefinition("CMAKE_CXX_STANDARD_DEFAULT"); + if (!defaultCxxStandard) + { + std::ostringstream e; + e << "CMAKE_CXX_STANDARD_DEFAULT is not set. COMPILE_FEATURES support " + "not fully configured for this compiler."; + this->IssueMessage(cmake::INTERNAL_ERROR, e.str()); + // Return true so the caller does not try to lookup the default standard. + return true; + } + if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS), + cmStrCmp(defaultCxxStandard)) == cmArrayEnd(CXX_STANDARDS)) + { + std::ostringstream e; + e << "The CMAKE_CXX_STANDARD_DEFAULT variable contains an " + "invalid value: \"" << defaultCxxStandard << "\"."; + this->IssueMessage(cmake::INTERNAL_ERROR, e.str()); + return false; + } + bool needCxx98 = false; bool needCxx11 = false; bool needCxx14 = false; @@ -5339,7 +5381,7 @@ bool cmMakefile::HaveCxxStandardAvailable(cmTarget const* target, const char *existingCxxStandard = target->GetProperty("CXX_STANDARD"); if (!existingCxxStandard) { - existingCxxStandard = this->GetDefinition("CMAKE_CXX_STANDARD_DEFAULT"); + existingCxxStandard = defaultCxxStandard; } if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS), diff --git a/Tests/CompileFeatures/CMakeLists.txt b/Tests/CompileFeatures/CMakeLists.txt index aacf4c1..9ef8049 100644 --- a/Tests/CompileFeatures/CMakeLists.txt +++ b/Tests/CompileFeatures/CMakeLists.txt @@ -128,26 +128,30 @@ foreach(lang CXX C) endforeach() if (CMAKE_C_COMPILE_FEATURES) - string(FIND "${CMAKE_C_FLAGS}" "-std=" std_flag_idx) - if (std_flag_idx EQUAL -1) - add_executable(default_dialect_C default_dialect.c) - target_compile_definitions(default_dialect_C PRIVATE - DEFAULT_C11=$ - DEFAULT_C99=$ - DEFAULT_C90=$ - ) + if (CMAKE_C_STANDARD_DEFAULT) + string(FIND "${CMAKE_C_FLAGS}" "-std=" std_flag_idx) + if (std_flag_idx EQUAL -1) + add_executable(default_dialect_C default_dialect.c) + target_compile_definitions(default_dialect_C PRIVATE + DEFAULT_C11=$ + DEFAULT_C99=$ + DEFAULT_C90=$ + ) + endif() endif() endif() if (CMAKE_CXX_COMPILE_FEATURES) - string(FIND "${CMAKE_CXX_FLAGS}" "-std=" std_flag_idx) - if (std_flag_idx EQUAL -1) - add_executable(default_dialect default_dialect.cpp) - target_compile_definitions(default_dialect PRIVATE - DEFAULT_CXX14=$ - DEFAULT_CXX11=$ - DEFAULT_CXX98=$ - ) + if (CMAKE_CXX_STANDARD_DEFAULT) + string(FIND "${CMAKE_CXX_FLAGS}" "-std=" std_flag_idx) + if (std_flag_idx EQUAL -1) + add_executable(default_dialect default_dialect.cpp) + target_compile_definitions(default_dialect PRIVATE + DEFAULT_CXX14=$ + DEFAULT_CXX11=$ + DEFAULT_CXX98=$ + ) + endif() endif() add_executable(CompileFeatures main.cpp) diff --git a/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake b/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake index 376f75a..833a315 100644 --- a/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake +++ b/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake @@ -17,6 +17,8 @@ file(READ "${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx_features.txt" CXX_FEATURES ) +include("${RunCMake_BINARY_DIR}/generate_feature_list-build/c_standard_default.cmake") +include("${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx_standard_default.cmake") if (NOT C_FEATURES) run_cmake(NoSupportedCFeatures) @@ -27,7 +29,9 @@ if (NOT CXX_FEATURES) run_cmake(NoSupportedCxxFeatures) run_cmake(NoSupportedCxxFeaturesGenex) else() - run_cmake(LinkImplementationFeatureCycle) + if(CXX_STANDARD_DEFAULT) + run_cmake(LinkImplementationFeatureCycle) + endif() run_cmake(LinkImplementationFeatureCycleSolved) if (";${CXX_FEATURES};" MATCHES ";cxx_final;") @@ -38,17 +42,19 @@ else() unset(RunCMake_TEST_OPTIONS) endif() -foreach(standard 98 11) - file(READ - "${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx${standard}_flag.txt" - CXX${standard}_FLAG - ) - if (CXX${standard}_FLAG STREQUAL NOTFOUND) - run_cmake(RequireCXX${standard}) - run_cmake(RequireCXX${standard}Variable) - endif() - if (CXX${standard}EXT_FLAG STREQUAL NOTFOUND) - run_cmake(RequireCXX${standard}Ext) - run_cmake(RequireCXX${standard}ExtVariable) - endif() -endforeach() +if(CXX_STANDARD_DEFAULT) + foreach(standard 98 11) + file(READ + "${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx${standard}_flag.txt" + CXX${standard}_FLAG + ) + if (CXX${standard}_FLAG STREQUAL NOTFOUND) + run_cmake(RequireCXX${standard}) + run_cmake(RequireCXX${standard}Variable) + endif() + if (CXX${standard}EXT_FLAG STREQUAL NOTFOUND) + run_cmake(RequireCXX${standard}Ext) + run_cmake(RequireCXX${standard}ExtVariable) + endif() + endforeach() +endif() diff --git a/Tests/RunCMake/CompileFeatures/generate_feature_list.cmake b/Tests/RunCMake/CompileFeatures/generate_feature_list.cmake index 09e17b1..5c58052 100644 --- a/Tests/RunCMake/CompileFeatures/generate_feature_list.cmake +++ b/Tests/RunCMake/CompileFeatures/generate_feature_list.cmake @@ -9,6 +9,20 @@ file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/cxx_features.txt" "${CMAKE_CXX_COMPILE_FEATURES}" ) +if(DEFINED CMAKE_C_STANDARD_DEFAULT) + set(c_standard_default_code "set(C_STANDARD_DEFAULT \"${CMAKE_C_STANDARD_DEFAULT}\")\n") +else() + set(c_standard_default_code "unset(C_STANDARD_DEFAULT)\n") +endif() +file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/c_standard_default.cmake" "${c_standard_default_code}") + +if(DEFINED CMAKE_CXX_STANDARD_DEFAULT) + set(cxx_standard_default_code "set(CXX_STANDARD_DEFAULT \"${CMAKE_CXX_STANDARD_DEFAULT}\")\n") +else() + set(cxx_standard_default_code "unset(CXX_STANDARD_DEFAULT)\n") +endif() +file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/cxx_standard_default.cmake" "${cxx_standard_default_code}") + foreach(standard 98 11) set(CXX${standard}_FLAG NOTFOUND) if (DEFINED CMAKE_CXX${standard}_STANDARD_COMPILE_OPTION) -- cgit v0.12 From d3489bdb0bc58b36f1e5ff2baa0aee8f4daea734 Mon Sep 17 00:00:00 2001 From: Robert Maynard Date: Mon, 19 Jan 2015 15:49:06 -0500 Subject: Features: Record for MSVC 2010-2015 Also, in WCDH add MSVC Compatibility for cxx_align{of,as}. Co-Author: Stephen Kelly Co-Author: Brad King --- Help/release/dev/feature-record-msvc.rst | 5 + Modules/Compiler/MSVC-CXX-FeatureTests.cmake | 106 +++++++++++++++++++++ Modules/Compiler/MSVC-CXX.cmake | 6 ++ Modules/WriteCompilerDetectionHeader.cmake | 9 +- Tests/CompileFeatures/CMakeLists.txt | 48 ++++++++++ .../WriteCompilerDetectionHeader/CMakeLists.txt | 15 ++- 6 files changed, 185 insertions(+), 4 deletions(-) create mode 100644 Help/release/dev/feature-record-msvc.rst create mode 100644 Modules/Compiler/MSVC-CXX-FeatureTests.cmake create mode 100644 Modules/Compiler/MSVC-CXX.cmake diff --git a/Help/release/dev/feature-record-msvc.rst b/Help/release/dev/feature-record-msvc.rst new file mode 100644 index 0000000..a8c9fd1 --- /dev/null +++ b/Help/release/dev/feature-record-msvc.rst @@ -0,0 +1,5 @@ +feature-record-msvc +------------------- + +* The :manual:`Compile Features ` functionality + is now aware of features supported by Microsoft Visual Studio (``MSVC``). 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() diff --git a/Modules/WriteCompilerDetectionHeader.cmake b/Modules/WriteCompilerDetectionHeader.cmake index e81bc08..d18f47c 100644 --- a/Modules/WriteCompilerDetectionHeader.cmake +++ b/Modules/WriteCompilerDetectionHeader.cmake @@ -36,7 +36,7 @@ # PREFIX ClimbingStats # OUTPUT_FILES_VAR support_files # OUTPUT_DIR compilers -# COMPILERS GNU Clang +# COMPILERS GNU Clang MSVC # FEATURES cxx_variadic_templates # ) # install(FILES @@ -100,7 +100,7 @@ # write_compiler_detection_header( # FILE climbingstats_compiler_detection.h # PREFIX ClimbingStats -# COMPILERS GNU Clang AppleClang +# COMPILERS GNU Clang AppleClang MSVC # FEATURES cxx_variadic_templates # ) # @@ -321,6 +321,7 @@ function(write_compiler_detection_header GNU Clang AppleClang + MSVC SunPro ) @@ -528,6 +529,8 @@ function(write_compiler_detection_header # define ${def_value} alignas(X) # elif ${prefix_arg}_COMPILER_IS_GNU || ${prefix_arg}_COMPILER_IS_Clang || ${prefix_arg}_COMPILER_IS_AppleClang # define ${def_value} __attribute__ ((__aligned__(X))) +# elif ${prefix_arg}_COMPILER_IS_MSVC +# define ${def_value} __declspec(align(X)) # else # define ${def_value} # endif @@ -540,6 +543,8 @@ function(write_compiler_detection_header # define ${def_value} alignof(X) # elif ${prefix_arg}_COMPILER_IS_GNU || ${prefix_arg}_COMPILER_IS_Clang || ${prefix_arg}_COMPILER_IS_AppleClang # define ${def_value} __alignof__(X) +# elif ${prefix_arg}_COMPILER_IS_MSVC +# define ${def_value} __alignof(X) # endif \n") endif() diff --git a/Tests/CompileFeatures/CMakeLists.txt b/Tests/CompileFeatures/CMakeLists.txt index 9ef8049..38c44c8 100644 --- a/Tests/CompileFeatures/CMakeLists.txt +++ b/Tests/CompileFeatures/CMakeLists.txt @@ -100,6 +100,31 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" ) endif() +if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") + if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0) + list(REMOVE_ITEM CXX_non_features + # The cxx_contextual_conversions feature happens to work + # (for *this* testcase) with VS 2010 and VS 2012, but + # they do not document support until VS 2013. + cxx_contextual_conversions + ) + elseif (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0) + list(REMOVE_ITEM CXX_non_features + # The cxx_deleted_functions and cxx_nonstatic_member_init + # features happen to work (for *this* testcase) with VS 2013, + # but they do not document support until VS 2015. + cxx_deleted_functions + cxx_nonstatic_member_init + ) + else() + list(REMOVE_ITEM CXX_non_features + # The cxx_constexpr feature happens to work (for *this* testcase) + # with VS 2015, but they document only partial support. + cxx_constexpr + ) + endif() +endif() + set(C_ext c) set(C_standard_flag 11) set(CXX_ext cpp) @@ -220,6 +245,29 @@ if (CMAKE_CXX_COMPILE_FEATURES) -DEXPECT_INHERITING_CONSTRUCTORS_AND_FINAL=0 ) endif() + elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") + if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0) + add_definitions( + -DEXPECT_OVERRIDE_CONTROL=1 + -DEXPECT_INHERITING_CONSTRUCTORS=1 + -DEXPECT_FINAL=1 + -DEXPECT_INHERITING_CONSTRUCTORS_AND_FINAL=1 + ) + elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0) + add_definitions( + -DEXPECT_OVERRIDE_CONTROL=1 + -DEXPECT_INHERITING_CONSTRUCTORS=0 + -DEXPECT_FINAL=1 + -DEXPECT_INHERITING_CONSTRUCTORS_AND_FINAL=0 + ) + else() + add_definitions( + -DEXPECT_OVERRIDE_CONTROL=0 + -DEXPECT_INHERITING_CONSTRUCTORS=0 + -DEXPECT_FINAL=0 + -DEXPECT_INHERITING_CONSTRUCTORS_AND_FINAL=0 + ) + endif() elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro") add_definitions( -DEXPECT_OVERRIDE_CONTROL=1 diff --git a/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt b/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt index 78c4a6a..e70a977 100644 --- a/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt +++ b/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt @@ -11,7 +11,7 @@ get_property(c_known_features GLOBAL PROPERTY CMAKE_C_KNOWN_FEATURES) write_compiler_detection_header( FILE "${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h" PREFIX TEST - COMPILERS GNU Clang AppleClang SunPro + COMPILERS GNU Clang AppleClang MSVC SunPro VERSION 3.1 PROLOG "// something" EPILOG "// more" @@ -67,6 +67,17 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) endif() +# for msvc the compiler version determines which c++11 features are available. +if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") + if(";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_delegating_constructors;") + list(APPEND true_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS) + list(APPEND true_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) + else() + list(APPEND false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS) + list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) + endif() +endif() + if (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang" OR CMAKE_C_COMPILER_ID STREQUAL "AppleClang") @@ -84,7 +95,7 @@ write_compiler_detection_header( PREFIX MULTI OUTPUT_FILES_VAR multi_files OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/compiler_multi_files/compiler_support" - COMPILERS GNU Clang AppleClang SunPro + COMPILERS GNU Clang AppleClang MSVC SunPro VERSION 3.1 FEATURES ${cxx_known_features} ${c_known_features} -- cgit v0.12