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27 lines
1.1 KiB
ReStructuredText
27 lines
1.1 KiB
ReStructuredText
CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
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------------------------------------
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List of variables that the :command:`try_compile` command source file signature
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must propagate into the test project in order to target the same platform as
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the host project.
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This variable should not be set by project code. It is meant to be set by
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CMake's platform information modules for the current toolchain, or by a
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toolchain file when used with :variable:`CMAKE_TOOLCHAIN_FILE`.
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Variables meaningful to CMake, such as :variable:`CMAKE_<LANG>_FLAGS`, are
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propagated automatically. The ``CMAKE_TRY_COMPILE_PLATFORM_VARIABLES``
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variable may be set to pass custom variables meaningful to a toolchain file.
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For example, a toolchain file may contain:
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.. code-block:: cmake
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set(CMAKE_SYSTEM_NAME ...)
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set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES MY_CUSTOM_VARIABLE)
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# ... use MY_CUSTOM_VARIABLE ...
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If a user passes ``-DMY_CUSTOM_VARIABLE=SomeValue`` to CMake then this
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setting will be made visible to the toolchain file both for the main
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project and for test projects generated by the :command:`try_compile`
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command source file signature.
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