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2151e5f79d
Modify the `export(EXPORT)` and `install(PACKAGE_INFO)` commands to actually enforce that certain arguments must be non-empty. With respect to `export`, this is mainly targeted at CPS export, but ends up affecting all flavors of `export(EXPORT)` because that is the level at which argument parsing is performed. Also, add unit tests to verify that the new rejection of arguments with missing or empty values is working, update the existing tests due to changes in error reporting, and remove no-longer-needed manual validation of an empty `PACKAGE_INFO` argument.
31 lines
1.2 KiB
ReStructuredText
31 lines
1.2 KiB
ReStructuredText
CMP0208
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.. versionadded:: 4.3
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:command:`export(EXPORT)` does not allow empty arguments.
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In CMake 4.2 and below, the :command:`export(EXPORT)` command silently
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accepted ``NAMESPACE``, ``FILE`` or ``CXX_MODULES_DIRECTORY`` arguments with
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empty or missing values.
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CMake 4.3 and above issue a diagnostic if any of these keywords are present
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without an associated value, or of the value given to ``FILE`` or
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``CXX_MODULES_DIRECTORY`` is empty. (``NAMESPACE`` is allowed to have an empty
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value, but an empty value must be quoted.) A diagnostic is also issued
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immediately if the value of ``EXPORT`` is missing or empty. (Previously, this
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would result in an error at generate-time because no export set whose name is
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empty can exist.)
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This policy provides compatibility with projects which may have relied on the
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previous lack of enforcement. The ``OLD`` behavior for this policy permits
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these keywords to be present without an accompanying value, or to be given an
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empty value. The ``NEW`` behavior requires that a value be given, and that
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the value (except for ``NAMESPACE``) is non-empty.
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.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 4.3
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.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
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.. include:: include/STANDARD_ADVICE.rst
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.. include:: include/DEPRECATED.rst
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