On Sat, Sep 24, 2022, at 5:45 AM, Richard Hopkins wrote: > On 2022-09-23 16:15, Zack Weinberg wrote: >> Thank you for the patch. Are you able to test it with a version of >> GNU Emacs older than 23.2? I see that you tested it with XEmacs 21, >> but as I recall there were quite substantial differences between >> XEmacs 21 and GNU Emacs of similar vintage. > > I've now managed to test this on Emacs 21.4.1 (Slackware 12.0) and > the byte compilation works - loading bytecomp is fine, and > `byte-compile-dest-file' is defined as expected. The other patch > to respect silent rules also works on 21.4.1. > > If we do need to support that far back I will investigate the "-Q" > / "--no-site-file" handling to improve compatibility across the > board.
I'm not an official maintainer for Automake, but I think we probably don't have to worry about Emacs any older than v21. Would anyone else like to express an opinion? > "-Q" will error before GNU Emacs 22, and is ignored on XEmacs. > > "-no-site-file" (single hypen) should be used instead of > "--no-site-file" as it works on all of them. > > "-Q" also shouldn't be specified on later GNU Emacs as it affects > the result of `am_cv_lispdir' calculation due to excluding > site lisp directories from `load-path' which it's trying to find. > This is because "-Q" also adds "--no-site-lisp" in later GNU Emacs. > > So, the plan will be to not use "-Q" and to use "-q -no-site-file" > instead. This sounds like it would be a worthwhile change regardless of where we decide to draw the line on supporting old versions of Emacs. zw
