[Development] Getting build flags for platforms without pkg-config

[Jake Petroules]

> On Oct 30, 2017, at 9:11 AM, Konstantin Tokarev <annulen at yandex.ru> wrote:
> 
> 
> 
> 30.10.2017, 18:53, "Konstantin Tokarev" <annulen at yandex.ru>:
>> 30.10.2017, 18:43, "Thiago Macieira" <thiago.macieira at intel.com>:
>>>  On segunda-feira, 30 de outubro de 2017 08:27:02 PDT Konstantin Tokarev wrote:
>>>>   >> $ cmake --find-package -DNAME=Qt5Core -DCOMPILER_ID=GNU -DLANGUAGE=CXX
>>>>   >> -DMODE=COMPILE
>>>>   >> -I/home/apol/devel/kde5/include/
>>>>   >> -I/home/apol/devel/kde5/include/QtCore
>>>>   >> -I/home/apol/devel/kde5/lib64//mkspecs/linux-g++
>>>>   >
>>>>   > -DQT_CORE_LIB is missing. Any volunteers to add it to the cmake files?
>>>> 
>>>>   It is already set:
>>> 
>>>  If it's already set, why is it missing?
>> 
>> Apparently because cmake's imitation of pkg-config is half-assed.
> 
> So, it seems to me that the most reasonable way to support more build systems
> without duplicating data between them is to enhance pkg-config support. In fact,
> .pc files can be as rich as our .pri modules, containing extra data in custom
> variables, and build systems can rely on original pkg-config tool or parse .pc files
> directly (it's a simple declarative format, if variable substitutions are not used).
> 
> AFAIK there no technical reason why providing .pc files for MSVC and macOS
> frameworks would be impossible.

Providing pkg-config files for Qt modules is something that's high on our list for the Qbs port of Qt; it's currently being worked on.

>> 
>>>  --
>>>  Thiago Macieira - thiago.macieira (AT) intel.com
>>>    Software Architect - Intel Open Source Technology Center
>>> 
>>>  _______________________________________________
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>>>  Development at qt-project.org
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>> 
>> --
>> Regards,
>> Konstantin
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>> Development at qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/development
> 
> -- 
> Regards,
> Konstantin
> _______________________________________________
> Development mailing list
> Development at qt-project.org
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-- 
Jake Petroules - jake.petroules at qt.io
The Qt Company - Silicon Valley
Qbs build tool evangelist - qbs.io