GitHub actions: compile driver on Ubuntu

[neteler]

First attempt to compile GDAL-GRASS driver including tests for GRASS GIS raster and vector maps.

[neteler]

All compiles and the tests are executed.

Still:

gdalinfo /home/runner/grassdata/nc_spm_08_micro/PERMANENT/cellhd/elevation
ERROR 1: libgrass_vector.7.8.so: cannot open shared object file: No such file or directory
ERROR 1: libgrass_vector.7.8.so: cannot open shared object file: No such file or directory
ERROR 1: libgrass_dgl.7.8.so: cannot open shared object file: No such file or directory
ERROR 1: libgrass_dgl.7.8.so: cannot open shared object file: No such file or directory
ERROR 4: `/home/runner/grassdata/nc_spm_08_micro/PERMANENT/cellhd/elevation' not recognized as a supported file format.
gdalinfo failed - unable to open '/home/runner/grassdata/nc_spm_08_micro/PERMANENT/cellhd/elevation'.

For this, the upcoming release of GRASS 7.8.8 (relevant change: OSGeo/grass#2280) is needed

[metzm]

With current released GRASS versions, you need to add the location of GRASS libraries to /etc/ld.so.conf.d/ or to LD_LIBRARY_PATH for the plugin to work.

[nilason]

I see this ($(pkg-config --libs-only-L grass | sed 's+-L++g')) is resolved as LD_LIBRARY_PATH=/usr/lib/grass7.8/lib

shouldn't it be LD_LIBRARY_PATH=/usr/lib/grass78/lib (without dot)?

[nilason]

If it is certain it is G78 then
LD_LIBRARY_PATH=$(grass78 --config path) could be an alternative.

[neteler]

Oh right, I overlooked the dot!

Watch outcome here:
https://github.com/neteler/gdal-grass/actions/

[metzm]

IMHO, a generic way to set LD_LIBRARY_PATH that works with both GRASS 7 and GRASS 8 should be used if possible.

[nilason]

IMHO, a generic way to set LD_LIBRARY_PATH that works with both GRASS 7 and GRASS 8 should be used if possible.

Absolutely. As grass.pc seem to be broken an alternative is: grass --config path which seems to work. But pre-G8 it is grass78 --config path etc.

[neteler]

Success! And yes, changed now to "versionless" with grass as well.

https://github.com/neteler/gdal-grass/actions/runs/2260092078

Thanks for your assistance!

[nilason]

Success! And yes, changed now to "versionless" with grass as well.

https://github.com/neteler/gdal-grass/actions/runs/2260092078

Thanks for your assistance!

Great! Is grass78 symlinked to grass on Linux?

[nilason]

Just an explainer if it wasn't obvious. LD_LIBRARY_PATH needs to be set for being picked up by ctypesgen, for loading the libraries.

[neteler]

Great! Is grass78 symlinked to grass on Linux?

At least on Debian, Ubuntu and Fedora yes.