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Every policy's documentation has a paragraph on what version of CMake introduced it, how to set the policy, and whether CMake warns if the policy is not set. The wording of this paragraph has diverged across policies over time. Factor the paragraph out into a standard advice document included by every policy.
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949 B
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25 lines
949 B
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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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.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.12
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.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
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.. include:: STANDARD_ADVICE.txt
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.. include:: DEPRECATED.txt
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