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ALIAS target: cannot overwrite an existing target

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Fixes: #19616
This commit is contained in:
Marc Chevrier
2020-05-28 14:52:57 +02:00
committed by Brad King
parent 04b9b2b5f3
commit 1eca5993e2
11 changed files with 100 additions and 1 deletions
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Help/policy/CMP0107.rst Normal file
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CMP0107
-------
It is not allowed to create an ``ALIAS`` target with the same name as an
another target.
In CMake 3.17 and below, an ``ALIAS`` target can overwrite silently an existing
target with the same name.
The ``OLD`` behavior for this policy is to allow target overwrite.
The ``NEW`` behavior of this policy is to prevent target overwriting.
This policy was introduced in CMake version 3.17. Use the
:command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
Unlike many policies, CMake version |release| does *not* warn
when this policy is not set and simply uses ``OLD`` behavior.
.. include:: DEPRECATED.txt