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7c38e6bb52
Add a variable to indicate the latest standard known to be supported for
each language:
* `CMAKE_C_STANDARD_LATEST`
* `CMAKE_CXX_STANDARD_LATEST`
* `CMAKE_CUDA_STANDARD_LATEST`
* `CMAKE_HIP_STANDARD_LATEST`
* `CMAKE_OBJC_STANDARD_LATEST`
* `CMAKE_OBJCXX_STANDARD_LATEST`
These variables, more generally referred to as
`CMAKE_<LANG>_STANDARD_LATEST`, are assigned an integer value which
represents the minimum between the latest version of the associated
language standard supported by the current compiler and the latest
version supported by CMake.
Add documentation for these variables in a new page called
`CMAKE_<LANG>_STANDARD_LATEST` was added under the "Variables for
Languages" section of the `cmake-variables(7)` page.
Update each compiler-specific CMake script under
`${CMAKE_ROOT}\Modules\Compiler` to manually define the relevant
`CMAKE_<LANG>_STANDARD_LATEST` variable as necessary. This will
require updating and maintaining as newer compiler versions become
recognized by CMake.
Closes: #25717
30 lines
1.1 KiB
CMake
30 lines
1.1 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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include(Compiler/Cray)
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__compiler_cray(CXX)
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string(APPEND CMAKE_CXX_FLAGS_MINSIZEREL_INIT " -DNDEBUG")
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string(APPEND CMAKE_CXX_FLAGS_RELEASE_INIT " -DNDEBUG")
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.1)
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set(CMAKE_CXX98_STANDARD_COMPILE_OPTION -h conform)
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set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION -h gnu)
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set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
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set(CMAKE_CXX_STANDARD_LATEST 98)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.4)
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION -h std=c++11)
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION -h std=c++11,gnu)
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set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
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set(CMAKE_CXX_STANDARD_LATEST 11)
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endif()
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.6)
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION -h std=c++14)
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION -h std=c++14,gnu)
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set(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT ON)
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set(CMAKE_CXX_STANDARD_LATEST 14)
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endif ()
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endif ()
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__compiler_check_default_language_standard(CXX 8.1 98)
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