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Diffstat (limited to 'Help/variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES.rst')
| -rw-r--r-- | Help/variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Help/variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES.rst b/Help/variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES.rst new file mode 100644 index 000000000..0f967876b --- /dev/null +++ b/Help/variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES.rst @@ -0,0 +1,26 @@ +CMAKE_TRY_COMPILE_PLATFORM_VARIABLES +------------------------------------ + +List of variables that the :command:`try_compile` command source file signature +must propagate into the test project in order to target the same platform as +the host project. + +This variable should not be set by project code. It is meant to be set by +CMake's platform information modules for the current toolchain, or by a +toolchain file when used with :variable:`CMAKE_TOOLCHAIN_FILE`. + +Variables meaningful to CMake, such as :variable:`CMAKE_<LANG>_FLAGS`, are +propagated automatically. The ``CMAKE_TRY_COMPILE_PLATFORM_VARIABLES`` +variable may be set to pass custom variables meaningful to a toolchain file. +For example, a toolchain file may contain: + +.. code-block:: cmake + + set(CMAKE_SYSTEM_NAME ...) + set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES MY_CUSTOM_VARIABLE) + # ... use MY_CUSTOM_VARIABLE ... + +If a user passes ``-DMY_CUSTOM_VARIABLE=SomeValue`` to CMake then this +setting will be made visible to the toolchain file both for the main +project and for test projects generated by the :command:`try_compile` +command source file signature. |