[QGIS-Developer] QGIS build error in Ubuntu 18.04

[Stephen Knox]

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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