[QGIS-Developer] QGIS build failure with QWT 6.2.0 (Linux openSUSE Tumbleweed)

[Nyall Dawson]

On Mon, 9 Aug 2021 at 23:34, Hernán De Angelis
<variablestarlight at gmail.com> wrote:
>
> Hi
>
> This is not a bug report about QGIS, just a note about something that
> might be problematic for others as well and that may need eventual
> attention.
>
> I am experiencing fatal problems building QGIS 3.20.0 and 3.20.1 in
> openSUSE Tumbleweed after QWT was updated to the latest 6.2.0. Errors
> are of the type:
>
> error: invalid use of incomplete type ‘const class QwtScaleDiv’
>
> (and with several other QWT classes as well)
>
> Apparently, the cause seems to be related to changes introduced in QWT
> 6.2.0 (as far as I understand "qwt_compat.h" has been removed, as
> reported here: https://github.com/gnuradio/gnuradio/issues/4956)
>
> I have not yet found a solution or work around that does not involve
> reverting to a previous version of QWT.

This is fixed already in the master branch.

Nyall