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# CMAKE_GENERATOR_TOOLSET

Native build system toolset name specified by user.

Some CMake generators support a toolset name to be given to the native build system to choose a compiler. If the user specifies a toolset name (e.g. via the `cmake(1)` `-T` option) the value will be available in this variable.

The value of this variable should never be modified by project code. A toolchain file specified by the `CMAKE_TOOLCHAIN_FILE` variable may initialize `CMAKE_GENERATOR_TOOLSET`. Once a given build tree has been initialized with a particular value for this variable, changing the value has undefined behavior.

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