Fails to access libiconv.la

[toddkuen]

M1 Mac, Ventura:

brew install px4-dev
Making install in parser
  GPERF  hconf.c
  LEX      lconf.c
  YACC     yconf.c
  CC       libkconfig_parser_la-yconf.lo
  CCLD     libkconfig-parser.la
grep: /usr/lib/libiconv.la: No such file or directory
sed: /usr/lib/libiconv.la: No such file or directory
libtool:   error: '/usr/lib/libiconv.la' is not a valid libtool archive
make[3]: *** [libkconfig-parser.la] Error 1
make[2]: *** [install] Error 2

No idea how to fix this or what an .la file is...?