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30 lines
1.3 KiB
ReStructuredText
30 lines
1.3 KiB
ReStructuredText
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CMP0090
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-------
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.. versionadded:: 3.15
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:command:`export(PACKAGE)` does not populate package registry by default.
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In CMake 3.14 and below the :command:`export(PACKAGE)` command populated the
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user package registry by default and users needed to set the
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:variable:`CMAKE_EXPORT_NO_PACKAGE_REGISTRY` to disable it, e.g. in automated
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build and packaging environments. Since the user package registry is stored
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outside the build tree, this side effect should not be enabled by default.
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Therefore CMake 3.15 and above prefer that :command:`export(PACKAGE)` does
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nothing unless an explicit :variable:`CMAKE_EXPORT_PACKAGE_REGISTRY` variable
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is set to enable it. This policy provides compatibility with projects that
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have not been updated.
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The ``OLD`` behavior for this policy is for :command:`export(PACKAGE)` command
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to populate the user package registry unless
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:variable:`CMAKE_EXPORT_NO_PACKAGE_REGISTRY` is enabled.
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The ``NEW`` behavior is for :command:`export(PACKAGE)` command to do nothing
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unless the :variable:`CMAKE_EXPORT_PACKAGE_REGISTRY` is enabled.
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This policy was introduced in CMake version 3.15. Use the
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:command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
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Unlike most policies, CMake version |release| does *not* warn
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when this policy is not set and simply uses ``OLD`` behavior.
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.. include:: DEPRECATED.txt
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