Subject: Re: bug#49901: Bug in build c-ares [too many loops]

From: Brad House <[email-masked]>
Date: Tue, 17 Aug 2021 16:51:39 -0400

This ended up being the fix to needing to run autoreconf -fi multiple times:
https://github.com/c-ares/c-ares/commit/e73fb47

Which appears to not be specific to c-ares as we got the logic from:
https://github.com/fenrus75/powertop/pull/82
https://bugzilla.redhat.com/show_bug.cgi?id=1835638

After that, there is also the issue that the newer ax_code_coverage.m4 
that is automatically pulled in is not API compatible as it removes 
@CODE_COVERAGE_RULES@ which isn't too friendly, plus adds a slew of 
additional .m4 dependencies that had to be imported.

And then finally, there is actually a bug in the latest 
ax_code_coverage.m4 that quotes AC_MSG_ERROR() which causes older 
autoconf/automake versions to barf.
https://github.com/c-ares/c-ares/commit/3883d99b05a845e4b40fc25c43ca83db70f4f20f#diff-fe38622a6c742be1bb93e6e65a0728f659114b3dc8d88172cb8844fa963418f9

I'm not sure where to report the last 2 issues.