[Dovecot] can't compile on redhat 9

[Farkas Levente]

hi,
while the current cvs compile on redhat 8.0 on redhat 9 gives the 
following error:
----------------------------
checking whether va_lists can be copied by value... yes
./configure: line 14217: syntax error near unexpected token `SSL,'
./configure: line 14217: `    PKG_CHECK_MODULES(SSL, openssl)'
error: Bad exit status from /var/tmp/rpm-tmp.84419 (%build)
----------------------------
any tip what can be the reason? thanks.
yours.

-- 
   Levente                               "Si vis pacem para bellum!"