[QGIS-Developer] QGIS build error in Ubuntu 18.04

[Stephen Knox]

Sorry, sent too quickly.

I was going to say I'm not sure why I had to set the flag for spatialite,
as https://www.gaia-gis.it/fossil/libspatialite/wiki?name=PROJ.6 implies
that it is no longer required. But I was definitely getting an error on a
checkout from the fossil build from one of the files in the
gaiageo directory, so it's possible this support is not complete yet.
Spatialite being a bit of a perennial laggard in terms of updates recently.

On Tue, Mar 31, 2020 at 2:06 PM Stephen Knox <stephenknox73 at gmail.com>
wrote:

> Hi Samweli,
>
> I was able to fix it last night with Proj 7 by doing the following (I have
> a custom build of gdal, spatialite, qgis and proj):
>
> - purge all libproj < 19 from /usr/local/lib or wherever your custom files
> are kept
> - Compile and install proj 7
> - Recompile libspatialite against proj 7 (to do that I not only had to
> specify the location for proj as above, but also set the
> CFLAGS"-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H=1" in configure
> - Recompile gdal against new libspatialite and proj7
> - Finally recompile QGIS
>
> On Tue, Mar 31, 2020 at 12:49 PM Samweli <smwltwesa6 at gmail.com> wrote:
>
>> Hi Stephen,
>>
>> Thanks a lot for your help, I have downgraded to PROJ 6.3.1 by installing
>> it
>> from source. Now I get this error
>>
>> [ 39%] Built target pyqtcompat
>> make[2]: *** No rule to make target
>> '/usr/lib/x86_64-linux-gnu/libspatialite.so', needed by
>> 'output/lib/libqgis_core.so.3.13.0'.  Stop.
>> CMakeFiles/Makefile2:1320: recipe for target
>> 'src/core/CMakeFiles/qgis_core.dir/all' failed
>> make[1]: *** [src/core/CMakeFiles/qgis_core.dir/all] Error 2
>> Makefile:162: recipe for target 'all' failed
>> make: *** [all] Error 2
>>
>> When I try to install libspatialite, it also installs PROJ 7, causing to
>> revert to the previous "invalid pointer" error!!
>>
>>
>>
>>
>>
>> --
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