[Development] can not build 5.9.1 qtmultimedia

[Allan Sandfeld Jensen]

On Sonntag, 23. Juli 2017 22:49:11 CEST Martin Koller wrote:
> On Sonntag, 23. Juli 2017 18:54:41 CEST Thiago Macieira wrote:
> > On Sunday, 23 July 2017 01:50:10 PDT Martin Koller wrote:
> > > I found this symbol to be in the qgsttools_p lib but I fear the linker
> > > takes the lib from a wrong path.
> > 
> > If you already have Qt installed system-wide, please remove the
> > development
> > files. You said you're on OpenSUSE, so just remove the Qt -devel packages.
> 
> Ouch.
> I assume this is just a workaround, and not "the solution", right ?
> 
It is a work-around, but it is an issue that pops up frequently and can take a 
while until solved. I do have development files of the system Qt installed, 
and it usually works just fine. When it does pop up it is however quite tricky 
to solve because if any pkg-config files add a system include directory to the 
compile command line, things break. Getting the correct order of includes on 
and gcc command line is impossible, so the only way of not getting a system 
header sneak in before the right Qt header is to make sure system include 
paths are never be explicitly specified, and that requires well-maintained 
bug-free devel packages.

So the issue might not even be Qt, but your distros.

'Allan