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
39 lines
1.4 KiB
CMake
39 lines
1.4 KiB
CMake
include(Compiler/Clang-CXX)
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include(Compiler/TIClang)
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__compiler_ticlang(CXX)
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if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
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AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
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AND CMAKE_DEPFILE_FLAGS_CXX)
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# dependencies are computed by the compiler itself
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set(CMAKE_CXX_DEPFILE_FORMAT gcc)
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set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
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endif()
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set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
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set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
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set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++14")
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++14")
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set(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT ON)
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set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std=c++17")
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set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++17")
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set(CMAKE_CXX_STANDARD_LATEST 17)
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# Including the "${CMAKE_ROOT}/Modules/Compiler/Clang-CXX.cmake" script above may set several other compile option
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# variables which do not necessarily apply here. So, we unset those variables accordingly.
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unset(CMAKE_CXX20_STANDARD_COMPILE_OPTION)
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unset(CMAKE_CXX20_EXTENSION_COMPILE_OPTION)
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unset(CMAKE_CXX23_STANDARD_COMPILE_OPTION)
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unset(CMAKE_CXX23_EXTENSION_COMPILE_OPTION)
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unset(CMAKE_CXX26_STANDARD_COMPILE_OPTION)
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unset(CMAKE_CXX26_EXTENSION_COMPILE_OPTION)
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