---In firebird-support@yahoogroups.com, <rgilland1966@...> wrote :

>

> I have tried this in both firebird 2.5.5 and Firebird 3.0
>

> I have a set of c libraries loosely based on FreeUDFLib.c

>

> I attempt to compile them and I get:

>

> Error c:\udf\date_functions.c 108 undefined reference to _isc_decode_date@8

> Error c:\udf\date_functions.c 510 undefined reference to _isc_encode_date@8

>

> Does anyone have a clue?

  Looks like you use C++ (instead of plain C) prototype for the isc_encode_date.

Regards,

Vlad