PSA: Please do not use KDEFrameworkCompilerSettings for non-KF projects

[Volker Krause]

On Mittwoch, 20. Januar 2021 13:51:15 CET Harald Sitter wrote:
> On 19.01.21 16:57, Friedrich W. H. Kossebau wrote:
> > Hi,
> > 
> > the docs of the module tell us:
> > "KDEFrameworkCompilerSettings - Set stricter compile and link flags for
> > KDE
> > Frameworks modules."
> > https://api.kde.org/ecm/kde-module/KDEFrameworkCompilerSettings.html
> > 
> > And it has been meant that way. E.g. because extending those settings with
> > more strict settings or new features would be done with other KF-specific
> > requirements or policies in mind, always matching those of the current
> > version (given KF & ECM are released in-sync).
> > Having to take care of backward-compatibility with non-KF usage and to do
> > proper documentation adds additional burden not wanted here.
> > 
> > As convenient it is to not have to write out e.g. all the
> > add_definitions(
> > 
> >     -DQT_NO_CAST_TO_ASCII
> >     -DQT_NO_CAST_FROM_ASCII
> >     -DQT_NO_URL_CAST_FROM_STRING
> >     -DQT_NO_CAST_FROM_BYTEARRAY
> >     -DQT_NO_SIGNALS_SLOTS_KEYWORDS
> >     -DQT_USE_QSTRINGBUILDER
> >     -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT
> > 
> > )
> > that needs some other solution.
> > 
> > For ECM/KF5 times the train has left, we need to handle those existing
> > abuses. But please fix your projects now already by changing back to
> > KDECompilerSettings and the manual boilerplate, so in ECM/KF6 times that
> > burden is gone.
> 
> Perhaps there should be a unit test asserting this somehow?
> LXR reports `247 occurences found.` so this seems a fairly wide spread
> issue :(
> 
> Perhaps hardcode a list of all cmake project names that are frameworks
> in ECM and then test that the settings are only used with one of them?
> Just an idea.

How about we try to come up with an alternative solution for what looks like a 
wide-spread demand for centrally maintained high-quality compiler settings 
instead then? That might also make any kind of enforcement to not use this 
outside of Frameworks unnecessary :)

Regards,
Volker
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