Fails to build with PROJ 8.0.0

[sebastic]

PROJ 8.0.0 has removed proj_api.h causing CMakeModules/FindLibproj4new.cmake to fail:

 -- Could NOT find LIBPROJ4 (missing: LIBPROJ4_LIBRARIES LIBPROJ4_INCLUDE_DIR)

src/projections.hpp needs to be ported to use proj.h.

See also: https://proj.org/usage/differences.html

[GillesDuvert]

Many thanks,
This was bound to happen one day...
I note it is not mentioned (yet?) in the link you sent.
Are you in position to test that using proj.h instead of proj_api.h in src/projections.hpp solves the problem?
More generally, we (I at least, as I wrote it) are interested in returns about the map support in GDL since the rewrite of Aprl 2019.

[sebastic]

One of the maintainers of the gnudatalanguage package in Debian (e.g. @olebole) should be able to test such changes better than me, but I can see what I can do in that respect as the maintainer of the proj package in Debian.

If you need help porting to the new PROJ API, the proj mailinglist is a good venue.

Just replacing proj_api.h with proj.h won't suffice, refer to the migration documentation for details:

https://proj.org/development/migration.html

[GillesDuvert]

hm, some work indeed. Thanks.

[opoplawski]

FWIW - We're hoping to get 8.0.0 into Fedora soon.

[GillesDuvert]

Thanks Orion, I do not see anybody working on this small patch and I do not have time for that either.
We are going to have a big release anytime now, plot and widget oriented, it would be a pity the projections were not available.