Re: moc file generation using cmake auto macros

[Peter Wu <peter () lekensteyn nl>]

Hi Paul,

On Thu, Apr 20, 2017 at 03:39:43PM +0000, Paul Offord wrote:
> Hi,
>
> I'm working through a long list of feedback points relating to a code submission I made - 
> https://code.wireshark.org/review/#/c/19666/
>
> Roland has rightly flagged that I need to generate the moc files with
> each cmake run.  I've never known how to do this - I currently use a
> .bat file to run a bunch of moc.exe commands.  I'm keen to learn how
> to do it.  These are his comments:
>
> "moc_ files should be added using Qt5 macros, not by the file itself.
> They must be generated on every run of cmake using the auto macros,
> respectively on every run of make using the moc compiler.  They MUST
> NOT be included in the repository, as they change depending on the Qt
> version, the plugin is built with."
>
> Assume I know next to nothing about cmake (coz that's the truth).  Can
> you tell me how to do what Roland suggests or point me to an example
> cmake file I can use as a template?

I think that you should have a look at ui/qt/CMakeLists.txt, especially
WIRESHARK_QT_HEADERS (which contains the Q_OBJECT macros) and
QT5_WRAP_CPP.

Looking around, I also found: https://doc.qt.io/qt-5/cmake-manual.html
Perhaps we could do this better as there is also:
https://cmake.org/cmake/help/v3.0/prop_tgt/AUTOMOC.html
https://cmake.org/cmake/help/v3.0/manual/cmake-qt.7.html
-- 
Kind regards,
Peter Wu
https://lekensteyn.nl
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