Review Request 123745: Stop producing warnings about CMP0037 policy

[Hrvoje Senjan]

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https://git.reviewboard.kde.org/r/123745/
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Review request for KDE Frameworks and Aleix Pol Gonzalez.


Repository: kauth


Description
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Let cmake know ALL is not the name in this custom command. As a bonus, one can really execute make ${HELPER_ID}.policy in projects where policies are generated by kauth.


Diffs
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  cmake/KF5AuthMacros.cmake 3508236 

Diff: https://git.reviewboard.kde.org/r/123745/diff/


Testing
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Configured powerdevil, no warning, before it nagged:
```
[  110s] CMake Warning (dev) at /usr/lib64/cmake/KF5Auth/KF5AuthMacros.cmake:76 (add_custom_target):
[  110s]   Policy CMP0037 is not set: Target names should not be reserved and should
[  110s]   match a validity pattern.  Run "cmake --help-policy CMP0037" for policy
[  110s]   details.  Use the cmake_policy command to set the policy and suppress this
[  110s]   warning.
[  110s] 
[  110s]   The target name "actions for org.kde.powerdevil.backlighthelper" is
[  110s]   reserved or not valid for certain CMake features, such as generator
[  110s]   expressions, and may result in undefined behavior.
[  110s] Call Stack (most recent call first):
[  110s]   daemon/BackendConfig.cmake:46 (kauth_install_actions)
[  110s]   daemon/CMakeLists.txt:96 (include)
```
Also make org.kde.powerdevil.backlighthelper.policy now works.


Thanks,

Hrvoje Senjan

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