r: prevent invalid substitution of paths in LDFLAGS

[w8jcik]

Resolves #6078

[bernhardkaindl]

@w8jcik, as you're the expert working on it, I trust you.

[bernhardkaindl]

@w8jcik, should I enable auto-merge already?

[w8jcik]

as you're the expert working on it, I trust you.

Haha, thanks =)

I belive that the fix works.

should I enable auto-merge already?

I would wait one day for some of my builds to finish to confirm that this has no adverse side-effects.

[bernhardkaindl]

I would wait one day for some of my builds to finish to confirm that this has no adverse side-effects.

Good, I'll only be sporadically available from now on.

When ready for merge, ping me on Github using a

@bernhardkaindl ready for merge / please merge thanks!

(or so, just a clear direct message if to act), then I'll merge when you see your message.

Otherwise you've to ask someone else who is approving PRs and can merge them (wdconinc, alecbcs, RikkiButler20)

I'll be mostly offline for quite some time, so I ping one of the mainainers to review or send a RFR with the link to #pull-requests in the Spack workspace https://spackpm.slack.com.

[w8jcik]

Thank you for the heads up and for your work.

Good, I'll only be sporadically available from now on.

Hope it is some nice holiday. In such case enjoy.

[w8jcik]

I can confirm that this fix works and the pull request can be merged.