slrn: fix compile on Xcode 12

[mitchblank]

This is the usual story -- the fact that Xcode 12 now has -Werror,implicit-function-declaration as default causes an issue for the autoconf script. In this instance it causes the va_copy() details to be mis-detected which causes compile issues later.

I don't know how closely maintained this package is (the git repo has been quiet for a few years) but I have emailed a more complete fix to the maintainer. For the minute just using the simple workaround here.

[fxcoudert]

Please file a report, open a ticket, or send an email to the devel list (and add a link in your comment). Otherwise we accumulate patches and fixes over time, and it becomes unmaintainable

[mitchblank]

Please file a report, open a ticket, or send an email to the devel list (and add a link in your comment). Otherwise we accumulate patches and fixes over time, and it becomes unmaintainable

Per https://slrn.info/patches.html

When your patch has been tested and ready for submission I would suggest that the best place for submission would be directly to JED himself, see the email link at the base of this page

This is what I have done. I don't know if there is a better place to report issues on slrn -- the project doesn't seem to have a public bug tracker and its git is self-hosted. Emailing the maintainer seems the best available.

[BrewTestBot]

@fxcoudert has triggered a merge.

[BrewTestBot]

🤖 A scheduled task has triggered a merge.