Packaging Qt6 (6.7.2) for Sailfish OS

[nephros]

@rinigus

BUT, note that we cannot compile qtwebengine for 32-bit devices. at least not using our common approach. its already disabled in fedora - source of our SPEC files. so, if the interest is to get qtwebengine on those devices, you would have to investigate and figure out how to do it.

Gentoo has also dropped support for QtWebEngine on all all arches except amd64 and aarch64.
And say what you will about Gentoo, but the devs do know how to compile stuff

Also, apparently building it needs more than 2GB RAM in a single process at some point when linking, so you can’t do it on a native 32bit machine and have to cross-compile.