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CMake: Support upcoming C++26 language level

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This commit is contained in:
Robert Maynard
2022-08-19 16:17:30 -04:00
parent 7b9757e507
commit f808d8afb9
14 changed files with 88 additions and 14 deletions
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5
Help/prop_gbl/CMAKE_CUDA_KNOWN_FEATURES.rst
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@@ -36,4 +36,9 @@ The features known to this version of CMake are:
Compiler mode is at least CUDA/C++ 23.
``cuda_std_26``
.. versionadded:: 3.25
Compiler mode is at least CUDA/C++ 26.
.. include:: CMAKE_LANG_STD_FLAGS.txt

5
Help/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.rst
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@@ -46,6 +46,11 @@ but it does not necessarily imply complete conformance to that standard.
Compiler mode is at least C++ 23.
``cxx_std_26``
.. versionadded:: 3.25
Compiler mode is at least C++ 26.
.. include:: CMAKE_LANG_STD_FLAGS.txt
Low level individual compile features

6
Help/prop_tgt/CUDA_STANDARD.rst
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@@ -39,6 +39,12 @@ Supported values are:
CUDA C++23
``26``
.. versionadded:: 3.25
CUDA C++26. CMake 3.25 and later *recognize* ``26`` as a valid value,
no version has support for any compiler.
If the value requested does not result in a compile flag being added for
the compiler in use, a previous standard flag will be added instead. This
means that using:

6
Help/prop_tgt/CXX_STANDARD.rst
View File

@@ -37,6 +37,12 @@ Supported values are:
C++23
``26``
.. versionadded:: 3.25
C++26. CMake 3.25 and later *recognize* ``26`` as a valid value,
no version has support for any compiler.
If the value requested does not result in a compile flag being added for
the compiler in use, a previous standard flag will be added instead. This
means that using:

6
Help/prop_tgt/HIP_STANDARD.rst
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@@ -25,6 +25,12 @@ Supported values are:
``23``
HIP C++23
``26``
.. versionadded:: 3.25
HIP C++26. CMake 3.25 and later *recognize* ``26`` as a valid value,
no version has support for any compiler.
If the value requested does not result in a compile flag being added for
the compiler in use, a previous standard flag will be added instead. This
means that using:

6
Help/prop_tgt/OBJCXX_STANDARD.rst
View File

@@ -31,6 +31,12 @@ Supported values are:
Objective C++23
``26``
.. versionadded:: 3.25
Objective C++26. CMake 3.25 and later *recognize* ``26`` as a valid value,
no version has support for any compiler.
If the value requested does not result in a compile flag being added for
the compiler in use, a previous standard flag will be added instead. This
means that using:

8
Help/release/dev/cxx_std_26.rst Normal file
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@@ -0,0 +1,8 @@
cxx_std_26
----------
* C++26 compiler modes may now be specified via the :prop_tgt:`CXX_STANDARD`,
:prop_tgt:`CUDA_STANDARD`, :prop_tgt:`HIP_STANDARD`, or
:prop_tgt:`OBJCXX_STANDARD` target properties,
or via the :manual:`Compile Features <cmake-compile-features(7)>`
functionality's ``cxx_std_26`` meta-feature.

19
Modules/CMakeDetermineCompileFeatures.cmake
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@@ -63,6 +63,7 @@ function(cmake_determine_compile_features lang)
set(CMAKE_CXX17_COMPILE_FEATURES)
set(CMAKE_CXX20_COMPILE_FEATURES)
set(CMAKE_CXX23_COMPILE_FEATURES)
set(CMAKE_CXX26_COMPILE_FEATURES)
include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake")
@@ -73,6 +74,9 @@ function(cmake_determine_compile_features lang)
return()
endif()
if (CMAKE_CXX23_COMPILE_FEATURES AND CMAKE_CXX26_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_CXX26_COMPILE_FEATURES ${CMAKE_CXX23_COMPILE_FEATURES})
endif()
if (CMAKE_CXX20_COMPILE_FEATURES AND CMAKE_CXX23_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_CXX23_COMPILE_FEATURES ${CMAKE_CXX20_COMPILE_FEATURES})
endif()
@@ -97,6 +101,7 @@ function(cmake_determine_compile_features lang)
${CMAKE_CXX17_COMPILE_FEATURES}
${CMAKE_CXX20_COMPILE_FEATURES}
${CMAKE_CXX23_COMPILE_FEATURES}
${CMAKE_CXX26_COMPILE_FEATURES}
)
endif()
@@ -107,6 +112,7 @@ function(cmake_determine_compile_features lang)
set(CMAKE_CXX17_COMPILE_FEATURES ${CMAKE_CXX17_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CXX20_COMPILE_FEATURES ${CMAKE_CXX20_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CXX23_COMPILE_FEATURES ${CMAKE_CXX23_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CXX26_COMPILE_FEATURES ${CMAKE_CXX26_COMPILE_FEATURES} PARENT_SCOPE)
message(CHECK_PASS "done")
@@ -119,6 +125,7 @@ function(cmake_determine_compile_features lang)
set(CMAKE_CUDA17_COMPILE_FEATURES)
set(CMAKE_CUDA20_COMPILE_FEATURES)
set(CMAKE_CUDA23_COMPILE_FEATURES)
set(CMAKE_CUDA26_COMPILE_FEATURES)
include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake")
@@ -129,6 +136,9 @@ function(cmake_determine_compile_features lang)
return()
endif()
if (CMAKE_CUDA23_COMPILE_FEATURES AND CMAKE_CUDA26_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_CUDA26_COMPILE_FEATURES ${CMAKE_CUDA23_COMPILE_FEATURES})
endif()
if (CMAKE_CUDA20_COMPILE_FEATURES AND CMAKE_CUDA23_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_CUDA23_COMPILE_FEATURES ${CMAKE_CUDA20_COMPILE_FEATURES})
endif()
@@ -153,6 +163,7 @@ function(cmake_determine_compile_features lang)
${CMAKE_CUDA17_COMPILE_FEATURES}
${CMAKE_CUDA20_COMPILE_FEATURES}
${CMAKE_CUDA23_COMPILE_FEATURES}
${CMAKE_CUDA26_COMPILE_FEATURES}
)
endif()
@@ -163,6 +174,7 @@ function(cmake_determine_compile_features lang)
set(CMAKE_CUDA17_COMPILE_FEATURES ${CMAKE_CUDA17_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CUDA20_COMPILE_FEATURES ${CMAKE_CUDA20_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CUDA23_COMPILE_FEATURES ${CMAKE_CUDA23_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_CUDA26_COMPILE_FEATURES ${CMAKE_CUDA26_COMPILE_FEATURES} PARENT_SCOPE)
message(CHECK_PASS "done")
@@ -175,6 +187,8 @@ function(cmake_determine_compile_features lang)
set(CMAKE_HIP17_COMPILE_FEATURES)
set(CMAKE_HIP20_COMPILE_FEATURES)
set(CMAKE_HIP23_COMPILE_FEATURES)
set(CMAKE_HIP26_COMPILE_FEATURES)
include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake")
@@ -185,6 +199,9 @@ function(cmake_determine_compile_features lang)
return()
endif()
if (CMAKE_HIP23_COMPILE_FEATURES AND CMAKE_HIP26_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_HIP26_COMPILE_FEATURES ${CMAKE_HIP23_COMPILE_FEATURES})
endif()
if (CMAKE_HIP20_COMPILE_FEATURES AND CMAKE_HIP23_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_HIP23_COMPILE_FEATURES ${CMAKE_HIP20_COMPILE_FEATURES})
endif()
@@ -209,6 +226,7 @@ function(cmake_determine_compile_features lang)
${CMAKE_HIP17_COMPILE_FEATURES}
${CMAKE_HIP20_COMPILE_FEATURES}
${CMAKE_HIP23_COMPILE_FEATURES}
${CMAKE_HIP26_COMPILE_FEATURES}
)
endif()
@@ -219,6 +237,7 @@ function(cmake_determine_compile_features lang)
set(CMAKE_HIP17_COMPILE_FEATURES ${CMAKE_HIP17_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_HIP20_COMPILE_FEATURES ${CMAKE_HIP20_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_HIP23_COMPILE_FEATURES ${CMAKE_HIP23_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_HIP26_COMPILE_FEATURES ${CMAKE_HIP26_COMPILE_FEATURES} PARENT_SCOPE)
message(CHECK_PASS "done")

1
Modules/Compiler/Clang.cmake
View File

@@ -255,6 +255,7 @@ macro(__compiler_clang_cxx_standards lang)
cxx_std_17
cxx_std_20
cxx_std_23
cxx_std_26
)
_record_compiler_features(${lang} "" CMAKE_${lang}_COMPILE_FEATURES)
endmacro()

1
Modules/Compiler/MSVC-CXX.cmake
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@@ -72,6 +72,7 @@ elseif (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0)
cxx_std_17
cxx_std_20
cxx_std_23
cxx_std_26
)
_record_compiler_features(CXX "" CMAKE_CXX_COMPILE_FEATURES)
endmacro()

28
Source/cmStandardLevelResolver.cxx
View File

@@ -378,25 +378,29 @@ std::unordered_map<std::string, StandardLevelComputer>
"C", std::vector<int>{ 90, 99, 11, 17, 23 },
std::vector<std::string>{ "90", "99", "11", "17", "23" } } },
{ "CXX",
StandardLevelComputer{
"CXX", std::vector<int>{ 98, 11, 14, 17, 20, 23 },
std::vector<std::string>{ "98", "11", "14", "17", "20", "23" } } },
StandardLevelComputer{ "CXX",
std::vector<int>{ 98, 11, 14, 17, 20, 23, 26 },
std::vector<std::string>{ "98", "11", "14", "17",
"20", "23", "26" } } },
{ "CUDA",
StandardLevelComputer{
"CUDA", std::vector<int>{ 03, 11, 14, 17, 20, 23 },
std::vector<std::string>{ "03", "11", "14", "17", "20", "23" } } },
StandardLevelComputer{ "CUDA",
std::vector<int>{ 03, 11, 14, 17, 20, 23, 26 },
std::vector<std::string>{ "03", "11", "14", "17",
"20", "23", "26" } } },
{ "OBJC",
StandardLevelComputer{
"OBJC", std::vector<int>{ 90, 99, 11, 17, 23 },
std::vector<std::string>{ "90", "99", "11", "17", "23" } } },
{ "OBJCXX",
StandardLevelComputer{
"OBJCXX", std::vector<int>{ 98, 11, 14, 17, 20, 23 },
std::vector<std::string>{ "98", "11", "14", "17", "20", "23" } } },
StandardLevelComputer{ "OBJCXX",
std::vector<int>{ 98, 11, 14, 17, 20, 23, 26 },
std::vector<std::string>{ "98", "11", "14", "17",
"20", "23", "26" } } },
{ "HIP",
StandardLevelComputer{
"HIP", std::vector<int>{ 98, 11, 14, 17, 20, 23 },
std::vector<std::string>{ "98", "11", "14", "17", "20", "23" } } }
StandardLevelComputer{ "HIP",
std::vector<int>{ 98, 11, 14, 17, 20, 23, 26 },
std::vector<std::string>{ "98", "11", "14", "17",
"20", "23", "26" } } }
};
}

7
Source/cmake.h
View File

@@ -861,6 +861,7 @@ private:
F(cxx_std_17) \
F(cxx_std_20) \
F(cxx_std_23) \
F(cxx_std_26) \
FOR_EACH_CXX98_FEATURE(F) \
FOR_EACH_CXX11_FEATURE(F) \
FOR_EACH_CXX14_FEATURE(F)
@@ -871,7 +872,8 @@ private:
F(cuda_std_14) \
F(cuda_std_17) \
F(cuda_std_20) \
F(cuda_std_23)
F(cuda_std_23) \
F(cuda_std_26)
#define FOR_EACH_HIP_FEATURE(F) \
F(hip_std_98) \
@@ -879,4 +881,5 @@ private:
F(hip_std_14) \
F(hip_std_17) \
F(hip_std_20) \
F(hip_std_23)
F(hip_std_23) \
F(hip_std_26)

1
Tests/CompileFeatures/CMakeLists.txt
View File

@@ -356,6 +356,7 @@ else()
HAVE_CXX_STD_17=$<COMPILE_FEATURES:cxx_std_17>
HAVE_CXX_STD_20=$<COMPILE_FEATURES:cxx_std_20>
HAVE_CXX_STD_23=$<COMPILE_FEATURES:cxx_std_23>
HAVE_CXX_STD_26=$<COMPILE_FEATURES:cxx_std_26>
)
endif()

3
Tests/CompileFeatures/genex_test.cpp
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@@ -27,6 +27,9 @@
# if HAVE_CXX_STD_23 && !defined(ALLOW_LATER_STANDARDS)
# error HAVE_CXX_STD_23 is true with CXX_STANDARD == 11
# endif
# if HAVE_CXX_STD_26 && !defined(ALLOW_LATER_STANDARDS)
# error HAVE_CXX_STD_26 is true with CXX_STANDARD == 11
# endif
#endif
#if !HAVE_OVERRIDE_CONTROL