[Chrootssh-users] How to install chrootssh in SLES9?

[openbsd s. <ope...@gm...>]

SLES9 use openssh-3.8p1-37.9, so I download openssh-3.8p1-chroot.tar.gz in
website.  In openssh-3.8p1-chroot/, when I ./configure, it showes some erro=
r
messages:

checking for deflate in -lz... no
configure: error: *** zlib missing - please install first or check
config.log ***

But I've installed zlib-1.2.1-70.1 from the install CD in system.

How can I do?
Thanks.