[SOLVED] new llvm in Slackware 14.2 ?

So, I see that there's a new llvm (llvm-8.0.1-x86_64-1_slack14.2.txz) available today for Slackware 14.2) which I (reflexively) upgraded to. Previously I was running (llvm-3.8.0-x86_64-2.txz), and I'm wondering what consequences I might face.

I do have a fair number of packages I've installed using Slackbuilds.org, and I expect nothing of concern until I attempt to upgrade one of those packages.

I'm a 'belt and suspenders' kind, and still have the llvm-3.8.0-x86_64-2.txz package available to put back if need be. Anyway, could I have some feedback, either way?

Quoting the associated README, apparently this is an optional upgrade, specially useful for those who want to build from sources Firefox and Thunderbird.

This is an optional upgrade to enable building Firefox and Thunderbird.

Also, I guess that it is useful for those who want to build a newer Mesa package, to support their (newer) hardware.

But, considering the huge version jump fom 3.8.0 to 8.0.1, I think that, unless there's a real reason to upgrade it (like building a newer Firefox or Mesa), upgrading it just for the sake of upgrading it could be troublesome.

So, I do not consider to upgrade it, for now.

Yeah, that's kind of what I was thinking as well, so I reverted to llvm-3.8.0-x86_64-2.txz

To avoid runtime issues, the llvm upgrade for Slackware 14.2 also contains the shared library from llvm-3.8.0. It could possibly cause build failures with SlackBuilds intended for Slackware 14.2's llvm-3.8.0, but temporarily reverting to the older llvm would be a workaround in those cases.

I am pleased with the upgrade because it means I should be able to compile LDC on my 14.2 workstation.

Will be following https://wiki.dlang.org/Building_LDC_from_source later today, time permitting.