Re: [Mingw-cross-env-list] Package proposal

[Mark Brand]

Martin Müllenhaupt wrote:
> Hi Mark,
>
> On 11/01/2011 09:28 AM, Mark Brand wrote:
> > It would also be nice to have a "test-vtk.exe" program for vtk. The main
> > reason is to demonstrate that linking works. Many of the other .mk files
> > build these. A few are example programs that come with the package, but
> > most are just minimal programs.
> I'd like to supply that test, but I'm not certain which way to use for
> gathering the linking information.
> I only use cmake for my applications, which is of course well supported
> by VTK. The tests I saw only use pkg-config, which seems to be the
> preferred tool for mingw-cross-env, right?
> So I could either try to patch VTK to generate a pkg-config .pc file.
> Or I could write a test using a simple CMakeLists.txt file. What do you
> prefer?
>
> Although it would be easy for CMake to generate a package-config file, I
> did not find a simple solution after a few minutes of googling. I guess
> it's some kind of politics not to support this tool.

I don't think you should be shy about using cmake to build the test 
program for vtk. Part of the purpose is to make sure the cmake 
configuration works. We use qmake, not pkg-config, to build the Qt test 
program and for other Qt based libraries. It's a question of the right 
tool for the job.

Whether pkg-config files should be generated by cmake is a question I 
don't have a view on. But it doesn't seem like a question specific to 
mingw-cross-env.

> > I noticed some linking problems already in VTK/Examples/GUI/Qt. The
> > generated makefiles are missing the -llcms dependency for -lmng, and
> > -ljpeg is missing for -ltiff. Also saw a missing -lbz2 somewhere.
> I think they are related to linking Qt. The Qt installation does not
> export a cmake configuration file. I usually use a CMake script based on
> https://lists.nongnu.org/archive/html/mingw-cross-env-list/2010-11/msg00069.html
> which parses the Qt linking information from the lib/Qt*.prl files.
>
> Based on this script, I just built VTK/Examples/GUI/Qt/SimpleView
> without errors.

That sounds promising. I don't know enough about cmake myself to feel 
comfortable judging what the right approach is. Maybe you can ask for 
some feedback on the cmake list or IRC about the right way to deal with 
static Qt. If you could propose a patch here, that would be great.

Mark