cyrus-sasl and plugin's dirertory

[Sergey via Cyrus-sasl <cyrus-sasl@xxxxxxxxxxxxxxxxxxxx>]

Hello.

cyrus-sasl can build with "--with-plugindir=" option.
How can application find it ? I see what Cyrus-IMAP,
Courier-IMAP and some can do it but Postfix can't.

If I found the right place in the code of Postfix
it uses a hard definition at compile time:

#if SASL_VERSION_MAJOR >= 2
    *path = strdup("/etc/postfix/sasl:@libdir@/sasl2");
#else
    *path = strdup("/etc/postfix/sasl:@libdir@/sasl");
#endif

I attempted to lookup to Cyrus-IMAP code but not found
implementation search of plugins. 

-- 
Regards, Sergey