[Dovecot] compile dovecot-sieve for dovecot 1.2.9 (ubuntu pkg)

Cheers,

I've a running Dovecot 1.2.9, installed from the ubuntu 10.04 Lucid LTS repository and trying to get the dovecot-sieve plugin (which seems to be not included in the lucid repo) compiled. Method 1 listed in http://wiki.dovecot.org/LDA/Sieve/Dovecot wont work, seems the rpm was build without --enable-header-install Is it sufficient to download the sources from http://archive.ubuntu.com/ubuntu/pool/main/d/dovecot/dovecot_1.2.9.orig.tar.... and use them for ./configure --with-dovecot=$path ?

thanks and happy holidays julien