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

[Christian Kandeler]

On Mon, 30 Oct 2017 09:00:46 +0100
Jeandet Alexis <alexis.jeandet at member.fsf.org> wrote:

> Le dimanche 29 octobre 2017 à 15:57 -0700, Thiago Macieira a écrit :
> > On domingo, 29 de outubro de 2017 14:57:44 PDT Jeandet Alexis wrote:  
> > > Hello,
> > > 
> > > Previously I asked about getting some defines from pkg-config, I
> > > pushed
> > > some code on gerrit to fix that.
> > > 
> > > Now I would like to care about platforms where we don't use pkg-
> > > config,
> > > at first I thought that we could get compile flags from qmake but
> > > it
> > > seems that no.  
> > 
> > You can get them from either qmake or cmake. The flags are saved
> > there.
> > 
> > You should also reconsider and install pkg-config on those platforms.
> >   
> > > Did I miss something?
> > > Would there be a way to get compile flags for a build system like
> > > meson?  
> > 
> > Either write a .pro file that prints or saves the flags, or read the 
> > $$[QT_INSTALL_ARCHDATA]/mkspecs/modules/qt_lib_*.pri files.
> > 
> > Reading the files directly is officially looking into private API and
> > we cannot 
> > promise you that it will continue working. But I don't see how to do
> > it 
> > officially with qmake either.  
> I was affraid I would get this answer. How do you solve this issue with
> QBS? Does qmake generate files for QBS on each Qt version or do you
> hardcode stuff in QBS? 

Neither. At the moment, qbs simply parses the module .pri files. The proper solution would be to provide qbs module files with Qt.


Christian