Subject: Re: bug#67477: Automake warns that $(?D) is a non-POSIX variable name

From: Karl Berry <[email-masked]>
Date: Mon, 27 Nov 2023 15:47:31 -0700

Hi Quinn,

> Automake seems to be aware of $(@D) and $(@F), but not the others.

Thanks for the report. This was fixed not long ago, and will be in the
next release. The prior report, for the record:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=9587

All the best,
Karl