Undefined symbols for architecture x86_64 in libmariadb-connector-c - build failure on master, with macOS

[Alexander Thurgood]

HI all,

In my usually uneventful master builds, last built on August 13th, I am
now seeing the following build failure in mysqlc.uno.dylib :

Undefined symbols for architecture x86-64:
"_iconv", referenced from _mariadb_convert_string in
libmariadb-connector-c.a
"_iconv_close", referenced from _mariadb_convert_string in
libmariadb-connector-c.a
"_iconv_open", referenced from _mariadb_convert_string in
libmariadb-connector-c.a

clang: error: linker command failed with exit code 1


What gives ?

Alex