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* CUDA, CXX, OBJCXX: C++23 support with Clang 12Raul Tambre2020-12-083-1/+13
| | | | | Clang 12 landed initial support for C++23 language mode flag -std={c|gnu}++2b in commit 6627a3c2873fdf7ccba1a1573371079be48b36e8.
* Tests: Update CompileFeatures test for Intel 19 with VS 2015Brad King2019-10-101-0/+6
| | | | | Blacklist `cxx_relaxed_constexpr` for this case because the compiler does not advertise the support in this mode but compiles our example.
* Intel: Fix default C++ dialect detection on WindowsBrad King2019-10-101-1/+11
| | | | | | For the Intel Compiler for Windows we have some subtle preprocessor checks in compiler feature detection to detect C++11 and C++14 modes. Use these when detecting the default C++ dialect too.
* CompileFeatures: Relax cxx_relaxed_constexpr compiler requirementsRobert Maynard2019-05-131-1/+2
| | | | | This in effect means that cxx_relaxed_constexpr is now supported by MSVC and Intel 18.0-18.04.
* SunPro: Record support for C++14 features by SunPro 5.{14,15}Brad King2019-04-191-0/+10
| | | | | | | | | | | SunPro 5.15 supports `-std=c++14` and several C++14 features. SunPro 5.14 accepts `-std=c++14` but does not update its definition of `__cplusplus` or any other macro to distinguish it from `-std=c++11`, so we need to blacklist a couple features that do work but that we cannot report for that version. We can still support `cxx_std_14`. Co-Author: Robert Maynard <robert.maynard@kitware.com>
* CompileFeatures: Now able to presume full language level supportRobert Maynard2019-04-091-10/+14
| | | | | | | | | Previously compilers that only supported the meta-level flags would not have any of the granular features listed. Now we presume that they have full support and enable all the features. Update granular feature tests to skip the actual compilation checks for the presumed features.
* Tests: Remove outdated portion of CompileFeatures genex testBrad King2019-04-091-11/+0
| | | | | | The genex part of the test verifies that `$<COMPILE_FEATURES:...>` evaluates as expected. It does not need to actually try using code with the associated features, as that is tested separately.
* Features: Do not use a lower-than-default standard for requested featuresZsolt Parragi2019-02-262-4/+4
| | | | | | | | `AddRequiredTargetC(xx)` feature didn't take the default compiler standard into account, which possibly resulted in the use of an older standard when some features requested it. Fixes: #18686
* Revise C++ coding style using clang-format-6.0Kitware Robot2018-06-019-95/+93
| | | | | | | | | | | | Run the `clang-format.bash` script to update all our C and C++ code to a new style defined by `.clang-format`. Use `clang-format` version 6.0. * If you reached this commit for a line in `git blame`, re-run the blame operation starting at the parent of this commit to see older history for the content. * See the parent commit for instructions to rebase a change across this style transition commit.
* clang-format.bash: update to clang-format-6.0Brad King2018-06-011-1/+1
| | | | | | | | | | | | Update `.clang-format` with configuration to make the 6.0 format as close as possible to what 3.8 produced before. Then revise the style: * Indent preprocessor directives (a feature new since 3.8) * Add a newline and indentation before inheritance `:` and `,` Rename the Git attribute identifying the format to include the clang-format version number: `format.clang-format-6.0`. This will aid external infrastructure in knowing what version of the tool to run.
* Tests: Simplify CompileFeatures expectation logicBrad King2018-04-061-174/+44
| | | | | | Rather than repeating compiler version checks for feature availability, generate genex expectations using the detect list of features. We already separately verify that the list of features is correct.
* Merge topic 'features-c++20'Brad King2018-04-022-1/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | 8570dc7f64 Help: Update compiler versions in cmake-compile-features.7.rst 874d3d2948 Help: Add release note for C++ 20 support 7f295b1bd3 Features: Activate C++ 20 support for Clang 5.0+ 71cb8ce3a1 Features: Activate C++ 20 support for GNU 8.0+ 8f146c4508 Features: Activate C++ 20 support for MSVC 19.12.25835+ 7fe580a362 Features: Add infrastructure for C++ 20 language standard 1b328e09a3 Features: Use -std=c++17 for C++ 17 on Clang 5.0+ 0bc3e5788a Features: Use -std=c++17 for C++ 17 on GNU 8.0+ Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !1892
| * Features: Add infrastructure for C++ 20 language standardBrad King2018-03-272-1/+7
| | | | | | | | Issue: #17849
* | Features: Record C features for MSVCBrad King2018-03-291-0/+5
| | | | | | | | | | | | | | | | | | The MSVC C compiler has no notion of C language standards or flags. Tell CMake to assume that all language standards are available. Record available C language features depending on the version of the compiler. Fixes: #17858
* | Features: Do not assume c_restrict support in CompileFeatures testBrad King2018-03-281-1/+11
| | | | | | | | Define `EXPECT_C_RESTRICT` separately for each compiler.
* | Features: Fix CompileFeatures test checks for CBrad King2018-03-281-3/+9
|/ | | | Compare the HAVE_ and EXPECT_ macros as we do for CXX.
* Features: Record initializer list support for Intel 14 and aboveBrad King2018-03-161-0/+6
| | | | | | | | | | | | | | | Features recorded by commit v3.6.0-rc1~120^2~5 (Features: Record standards and features for Intel C++ on UNIX, 2016-04-28) for the Intel compiler left out initializer list support because our test case in `Tests/CompileFeatures/cxx_generalized_initializers.cpp` caused an internal compiler error. It turns out this is because the Intel compiler asserts the `initializer_list` constructor signatures to verify that they match its own `<initializer_list>` header. It was our dummy implementation used to test the language feature without any headers that caused the ICE. Revise it to use a constructor signature accepted by the Intel compiler. Fixes: #17829
* Tests: Make CompileFeatures C dialect check consistent with implBrad King2018-02-211-1/+1
| | | | | | | | `Modules/CMakeCCompilerId.c.in` will report the C dialect as 11 whenever `__STDC_VERSION__` indicates *at least* C 11. Make the test consistent with this. We already do this for the C++ case. Fixes: #17740
* clang-format: format all code as Cpp11Daniel Pfeifer2017-08-303-11/+12
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* Features: Fix COMPILE_FEATURES genex for C++ 14 and 17 featuresBrad King2017-08-082-0/+20
| | | | | | When `CXX_STANDARD` is not at least 14 or 17, features enabled by the compiler for those standards should not be reported as existing by the `COMPILE_FEATURES` genex. Fix the implementation and add a test.
* MSVC: Add flags for C++ language standardsBrad King2017-07-171-9/+14
| | | | | | | | | | | Visual Studio 2015 Update 3 introduced the notion of language standard levels to MSVC. The language standard level is defined in `_MSVC_LANG` instead of `__cplusplus`. It also added support for the `-std:c++14` and `-std:c++latest` flags, although the compiler defaults to its C++14 mode anyway. Visual Studio 2017 Update 3 will introduce support for the `-std:c++17` flag. Fixes: #16482
* CompileFeatures: Makes tests work with meta-feature onlyChuck Atkins2017-05-291-6/+17
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* Features: Record features for SunPro C 5.13 and 5.14Brad King2017-05-112-1/+12
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* clang-format.bash: Use Git attributes to mark files for formattingBrad King2017-02-221-0/+2
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* CompileFeatures Test: make sure the target "CompileFeatures" is always definedRolf Eike Beer2017-01-301-10/+8
| | | | | | Everything in there guards against unsupported compilers already, so no need to skip the whole file if no features are defined. This in turn allows to have a simpler fallback in case there is no C++ auto_type feature available.
* Tests: use cxx_auto_type only if actually availableRolf Eike Beer2017-01-251-0/+3
| | | | | The presence of CMAKE_CXX_COMPILE_FEATURES doesn't mean cxx_auto_type is always available.
* Features: Add infrastructure for C++ 17 language standardBrad King2016-12-022-2/+7
| | | | Issue: #16468
* Features: Suppress c_static_assert test coverage on Intel <= 15Brad King2016-11-101-0/+9
| | | | It works on some pre-15.0.2 versions but not others.
* Features: Test feature propagation with language standard meta-featureBrad King2016-11-021-4/+4
| | | | | | | The `cxx_static_assert` feature may be available in C++ 98 mode of some compilers or not available at all in others. Intstead of using an individual feature to test propagation of a feature requiring C++ 11, use the `std_cxx_11` meta-feature that has exactly this meaning.
* Features: Add meta-features requesting awareness of a particular standardBrad King2016-11-021-0/+2
| | | | | | | | | | A common use case of `target_compile_features` is simply to specify that the compiler should be run in a mode that is aware of e.g. C++11. Some projects simply specify a particular C++11-only feature to request this. Provide a first-class way to do this by naming features after the corresponding language standard. Record them as always available in the corresponding standard level so that requesting them always ensures that standard (or higher) is used.
* Features: Fix cxx_right_angle_brackets compiler feature testAlex Wang2016-10-251-1/+3
| | | | | | | The clang-format pass in commit v3.6.0-rc1~54^2~1 (Revise C++ coding style using clang-format, 2016-05-16) changed the template right angle brackets from `>>` to `> >`, which defeats the purpose of this test. Change it back and exclude this content from formatting.
* Revise C++ coding style using clang-formatKitware Robot2016-05-1642-192/+243
| | | | | | | | | | | | | Run the `Utilities/Scripts/clang-format.bash` script to update all our C++ code to a new style defined by `.clang-format`. Use `clang-format` version 3.8. * If you reached this commit for a line in `git blame`, re-run the blame operation starting at the parent of this commit to see older history for the content. * See the parent commit for instructions to rebase a change across this style transition commit.
* Tests: Protect unicode literals from clang-format Cpp03 formattingBrad King2016-05-111-0/+2
| | | | | | | | | | | Since CMake is written in C++98 any clang-format configuration must set `Standard` to `Cpp03` so that `A<A<int> >` is not rewritten as `A<A<int>>`. However, this will cause `U"foo"` to be rewritten as `U "foo"`. Add markup to turn clang-format off in the one place that the latter case occurs so that we do not need a separate `.clang-format` config file for it. Inspired-by: Daniel Pfeifer <daniel@pfeifer-mail.de>
* Features: Record standards and features for Intel C on UNIXRobert Maynard2016-04-281-0/+10
| | | | | Record features for Intel C 12.1 and above. Skip this for now on Windows (where Intel C simulates MSVC).
* Features: Record standards and features for Intel C++ on UNIXLevi Morrison2016-04-281-0/+72
| | | | Skip this for now on Windows (where Intel C++ simulates MSVC).
* Features: Update MSVC features for VS 2015 RTMBrad King2015-07-211-6/+0
| | | | | VS 2015 RTM completed support for constexpr and attribute features. Update our feature table and test accordingly.
* Features: VS 2013 Update 3 supports initializer lists (#15494)Brad King2015-04-061-2/+2
| | | | | | | | | | | VS 2013 originally claimed to support initializer lists but a bug was found in which it generated bad code silently. For this reason we previously considered support to not be present. However, Update 3 adds a hard error on cases that previously generated bad code, so it is now safe to use initializer lists with VS 2013 Update 3 or greater. At worst a compiler error will be issued in the cases that do not work, but that is no different from any other compiler-specific workaround a project code may need.
* Tests: Fix CompileFeatures cxx_generalized_initializers exampleBrad King2015-04-061-2/+6
| | | | | | | | | The only reason this failed to compile on VS 2013 was because the compiler uses different initializer_list constructor argument types than our dummy implementation. The standard does not specify the non-default constructor argument types for initializer_list. Use a template to match any two-arg constructor a compiler might select (e.g. begin/end or begin/len). Use #error to preserve the error on VS 2013.
* Features: Fix C90 feature detection.Stephen Kelly2015-02-042-0/+70
| | | | | | | | | | | | | | | This bug caused c_function_prototypes to not be recorded at configure time when compiling with -std=gnu99 or similar. In the case of feature recording, that was not a problem, because the logic in CMakeDetermineCompileFeatures.cmake currently assumes that a feature present for an earlier standard is present for a later standard. However, the detection strings are also used in WriteCompilerDetectionHeader, so the feature macro has been defined to '0' when using a later language dialect. Fix that by not checking the existence of the __STDC_VERSION__ macro at all when detecting C90 features.
* Features: Record for MSVC 2010-2015Robert Maynard2015-01-301-0/+48
| | | | | | | 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>
* Features: Define meaning for no language standard defaultBrad King2015-01-291-16/+20
| | | | | | | | | | | | Define an empty string in CMAKE_<LANG>_STANDARD_DEFAULT to mean that the toolchain has no notion of lanuage standard levels. In this case the <LANG>_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.
* Merge topic 'test-features-enforce-expectation'Brad King2015-01-271-0/+15
|\ | | | | | | | | | | 67e76e82 Features: Fix test to reject missing expectation definitions 3046be77 Features: Emit a test failure if 'override' is present but not expected
| * Features: Fix test to reject missing expectation definitionsBrad King2015-01-261-0/+12
| | | | | | | | | | | | | | | | | | Whenever feature support is added to a compiler, the CompileFeatures test needs to be updated to set expected availability of features. Add #error directives to ensure the test fails if expectations are not set. Suggested-by: Stephen Kelly <steveire@gmail.com>
| * Features: Emit a test failure if 'override' is present but not expectedStephen Kelly2015-01-261-0/+3
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* | Merge topic 'GNU-4.4-compile-features'Brad King2015-01-231-0/+8
|\ \ | | | | | | | | | | | | 374a66b5 Features: Blacklist raw string literals test for GNU 4.4
| * | Features: Blacklist raw string literals test for GNU 4.4Brad King2015-01-221-0/+8
| | | | | | | | | | | | | | | RedHat gcc 4.4.7-11 supports raw string literals, so simply blacklist the test for its rejection.
* | | Merge topic 'GNU-4.4-compile-features'Brad King2015-01-222-1/+12
|\ \ \ | |/ / | | / | |/ |/| | | | | 965a50dc Features: Fix GNU 4.4 and 4.5 C standard level flags 7f4154a4 Features: Fix CompileFeatures non-feature tests for space in path f40c19b5 Features: Fix CompileFeatures test for C non-features
| * Features: Fix CompileFeatures non-feature tests for space in pathBrad King2015-01-211-1/+2
| | | | | | | | | | | | Fix the <lang>_non_features try_compile calls to work correctly when there is a space in the path. Otherwise they all fail due to the space instead of the lack of a feature.
| * Features: Fix CompileFeatures test for C non-featuresBrad King2015-01-211-0/+10
| | | | | | | | | | Add a "feature_test.c" file corresponding to "feature_test.cpp" but for the C language. This source will be needed by C_non_features entries.
* | Merge topic 'GNU-4.4-compile-features'Brad King2015-01-192-13/+14
|\ \ | |/ | | | | | | | | | | | | | | | | | | 004e1540 Features: Record for GNU 4.4. 2a5ca650 Features: Wrap failure-test in UNIX condition. 1ae2c6b2 Features: Blacklist cxx_constexpr test for GNU 4.5. c66e3317 Features: Use a more-common feature in cycle-test. c43a6dc5 Features: Update comment in test to match the code. 78259135 Features: Test presence of cxx_auto_type with genex. 7b9fc88b Features: Remove outdated comment.
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