cmake error under ubuntu22

[zhangfq-chemistry]

[ 22%] Performing download step (download, verify and extract) for 'occ-populate'
-- Downloading...
dst='/home/zhangfq/Chem/crystalexplorer/build/_deps/occ-subbuild/occ-populate-prefix/src/occ-0.6.3-.tar.xz'
timeout='none'
inactivity timeout='none'
-- Using src='https://github.com/peterspackman/occ/releases/download/v0.6.3/occ-0.6.3-.tar.xz'
-- [download 0% complete]
CMake Error at occ-subbuild/occ-populate-prefix/src/occ-populate-stamp/download-occ-populate.cmake:170 (message):
Each download failed!

[peterspackman]

No documentation for this at the moment, recent change. But you'll need to set the CPACK_SYSTEM_NAME to something that has an occ release for now, I'll tidy this up later. e.g. -DCPACK_SYSTEM_NAME=linux-x86_64.

I'll leave the issue open until I update the documentation.

[zhangfq-chemistry]

Thanks! There is a technique called RHI (render hardware interface) in QT, and you can use it in this useful project.

[peterspackman]

Never got around to commenting on this, but did you get it working in the end?

I'm aware of the RHI stuff, and it'd be great to have a hardware agnostic backend but unfortunately I've now got so much opengl specific code to work around some things that are missing/absent from the QT bindings that changing is a massive overhaul and just not a priority right now given all the other things I need to fix!