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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
21 lines
628 B
CMake
21 lines
628 B
CMake
include(Compiler/GNU)
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__compiler_gnu(OBJCXX)
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__compiler_gnu_cxx_standards(OBJCXX)
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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_OBJCXX)
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# dependencies are computed by the compiler itself
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set(CMAKE_OBJCXX_DEPFILE_FORMAT gcc)
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set(CMAKE_OBJCXX_DEPENDS_USE_COMPILER TRUE)
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endif()
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if(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 4.2)
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set(CMAKE_OBJCXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden")
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endif()
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if(NOT CMAKE_OBJCXX_LINK_FLAGS)
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set(CMAKE_OBCXX_LINK_FLAGS "-lstdc++")
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endif()
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