[Qgis-developer] Troubles with qwtpolar

[Matthias Kuhn]

Short background:

History:
 * qwtpolar is used for showing the satellite map on the gps widget
 * ubuntu, debian (osgeo4w, mac I guess) don't ship qwtpolar packages
 * therefore qwtpolar source code is shipped with the qgis source code
 * the qwtpolar source code in the qgis repository is no longer
compatible with the latest qwt library

Options:
 * update the qwtpolar source code in the qgis repository
 * remove the satellite display (that's what's currently done when
qwtpolar is disabled)
 * re-implement the satellite display without unpackaged external
dependencies (I'd love to see somebody do that, e.g. a QML component
would be great)

Until then: make sure you have an old qwt library ready (qwt < 6.1),
have a system that ships a recent version of qwtpolar (e.g. Fedora) or
turn off WITH_QWTPOLAR.

Cheers,
Matthias

On 08/16/2015 08:11 PM, J.O. Williams wrote:
> Andreas,
>
> I would like to suggest that qwtpolar option be changed to OFF
> permanently and use the embedded copy exclusively.  I have had trouble
> with option a couple of times and have tried to install the qwtpolar
> library.  And have wasted a hour each time trying to reinstall before
> I remember the change needed. The library  is no longer being
> maintained and is probably dead code.
>
> I also build using Ubuntu 14.04 LTS.
>
> TIA
>
> J.O. Williams
>
> On 08/16/2015 10:01 AM, Andreas Neumann wrote:
>> Thanks Bas - this seems to work.
>>
>> Andreas
>>
>> On 16.08.2015 17:39, Sebastiaan Couwenberg wrote:
>>> On 16-08-15 17:23, Andreas Neumann wrote:
>>>> I upgraded a laptop with Ubuntu 15.04 and I can't compile QGIS because
>>>> of qwtpolar. I tried with internal qwtpolar, but it complains that
>>>> it is
>>>> not compatible with qwt6.1 and above (which seems to be the default in
>>>> Ubuntu 15.04). It also seems like Ubuntu 15.04 doesn't provide a
>>>> package
>>>> for qwtpolar, so if I turn internal qwtpolar off it complains that it
>>>> can't find qwtpolar.
>>>>
>>>> What do you recommend to do on Ubuntu 15.04?
>>> Using the -DWITH_QWTPOLAR=OFF CMake option should be sufficient to
>>> build
>>> QGIS with Qwt >= 6.1.
>>>
>>> The qwtpolar embedded copy needs to be updated to qwtpolar-1.1 for Qwt
>>>> = 6.1 support, see:
>>> http://hub.qgis.org/issues/13156
>>>
>>> Kind Regards,
>>>
>>> Bas
>>>
>>
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