autoconf tests for iconv fail with undefined refs

[Lemures Lemniscati]

On Fri, 18 Feb 2022 12:33:30 -0700, Brian Inglis
> Any idea why autoconf tests for iconv now fail with undefined refs to iconv{_open,,_close}! STC attached, log, -E output. Tried also with -l iconv.

https://cygwin.com/cgi-bin2/jobs.cgi?srcpkg=playground&id=3861

Hi, Brian.

This will successfully build libisocodes-1.2.4 but some tests fail.

Lem