Re: [Plplot-general] Am I going about this the best way?

[Aaron H. <he...@co...>]

Alan,

Thanks for the hint on Qt4 vs Qt5 - probably spared me a few hours of pain!
I set out to trial the memqt driver and ran into some issues with the build
on MSVC 2012.

1) For some reason, which I had never encountered before, the CMake system
generates incorrect build files when the source path includes spaces.  Not a
big deal really, I can just move to a path without spaces.  I don't recall
the exact issue, but I think it broke up include paths into separate
entries.  I am using a fairly old version of CMake (2.8.12.2)

I started with Qt configured for dynamic linking

2) I tried to build PLplot as a shared lib, then realized that was not
really going to work for me since my application accessed some other
normally private functions, not exported in the DLL (pldtik, pldprec, etc).

3) I tried to build PLplot as a static lib (which I normally do for my app
anyway).  But then I started getting incompatible linkage warnings and some
errors about trying to initialize dllimport'ed data
(\plplot-plplot\bindings\qt_gui\plqt.cpp(28): error C2491: 'vectorize' :
definition of dllimport data not allowed).  After finding/following the
thread here (http://ehc.ac/p/plplot/mailman/message/33603310/), I began to
suspect that the USINGDLL macro might be an issue.  Despite the fact that I
configured PLplot for static build it seems that the cmake scripts still
applied USINGDLL to the plqt.c file. Is that expected (I don't totally
understand the use of USINGDLL in all the contexts)?  Is it perhaps related
to the issue described in that thread on the devel list?

Thanks,

Aaron.

-----Original Message-----
From: Alan W. Irwin [mailto:ir...@be...] 
Sent: Thursday, March 26, 2015 1:58 AM
To: Aaron Hexamer
Cc: plp...@li...
Subject: RE: [Plplot-general] Am I going about this the best way?

On 2015-03-26 00:08-0500 Aaron Hexamer wrote:

> Thanks, Alan.  I'll check out Qt. Looks like it has a mem driver too.  
> I'll just have to try and see which dependencies are lightest.

P.S.  At this stage I would definitely recommend the latest version of
Qt4 rather than experimenting with Qt5.  The latter does mostly work with
our qt device driver and qt_example (using the experimental
-DPLPLOT_USE_QT5=ON option), but is just not nearly as reliable as
Qt4 in our experience.  I am sure Qt5 will eventually get there, but it just
needs a lot more time to mature properly.

Alan

__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); the Time Ephemerides project
(timeephem.sf.net); PLplot scientific plotting software package
(plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux
Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
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