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26 lines
1.0 KiB
26 lines
1.0 KiB
CMP0074
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.. versionadded:: 3.12
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:command:`find_package` uses ``<PackageName>_ROOT`` variables.
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In CMake 3.12 and above the :command:`find_package(<PackageName>)` command now
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searches prefixes specified by the :variable:`<PackageName>_ROOT` CMake
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variable and the :envvar:`<PackageName>_ROOT` environment variable.
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Package roots are maintained as a stack so nested calls to all ``find_*``
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commands inside find modules and config packages also search the roots as
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prefixes. This policy provides compatibility with projects that have not been
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updated to avoid using ``<PackageName>_ROOT`` variables for other purposes.
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The ``OLD`` behavior for this policy is to ignore ``<PackageName>_ROOT``
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variables. The ``NEW`` behavior for this policy is to use
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``<PackageName>_ROOT`` variables.
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This policy was introduced in CMake version 3.12. CMake version
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|release| warns when the policy is not set and uses ``OLD`` behavior.
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Use the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW``
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explicitly.
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.. include:: DEPRECATED.txt
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