D5866: ecm_qt_declare_logging_category(): more unique include guard for header

[Friedrich W. H. Kossebau]

kossebau added a comment.


  A different reasoning for why not yet using `#pragma once`: this macro targets users of projects with at least cmake and Qt. Unless Qt itself does not use that pragma, let's not risk to screw over people who try to reuse ECM for some non-mainstream setup, unless we have no other choice.

REPOSITORY
  R240 Extra CMake Modules

REVISION DETAIL
  https://phabricator.kde.org/D5866

To: kossebau, #frameworks, #build_system
Cc: elvisangelaccio
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