CMAKE_EXPORT_NO_PACKAGE_REGISTRY

Disable the export(PACKAGE) command.

In some cases, for example for packaging and for system wide installations, it is not desirable to write the user package registry. If the CMAKE_EXPORT_NO_PACKAGE_REGISTRY variable is enabled, the export(PACKAGE) command will do nothing.

See also Disabling the Package Registry.

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.9/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.html