scp does not works under solaris

[alain.morel at ig-edu.univ-paris13.fr]

 OS        : solaris8 with update patches
 Station : Sparc Ultra5
 device /dev/random installed
 openssl version : openssl-0.9.7d
 openssh version : openssh-3.9p1
 My configuration :
 ./configure --prefix=/usr --sysconfdir=/etc/ssh --with-tcp-wrappers
 --with-privsep-user=sshd40 --with-ssl-dir=/usr/lib

 ssh works but when I lauch scp I have the following error

 sylow[root]<45>scp README thales:/
 Enter passphrase for key '/.ssh/id_dsa': 
 ld.so.1: scp: fatal: libz.so: open failed: No such file or directory
 Killed
 lost connection
 But libz.so exist and is detected at configure time:
 sylow[root]<46>ls -l /usr/lib/libz*
 lrwxrwxrwx   1 root     root          11 nov   7  2001 /usr/lib/libz.so ->
 ./libz.so.1
 -rwxr-xr-x   1 root     bin        70064 oct   4  2003 /usr/lib/libz.so.1
 -rwxr-xr-x   1 root     bin        66645 juin 10  2002 /usr/lib/libz.so.1.1.4

 I also compile with the following line ( with explicit zlib option ) :
 ./configure --prefix=/usr --sysconfdir=/etc/ssh --with-tcp-wrappers
 --with-privsep-user=sshd40 --with-ssl-dir=/usr/lib --with-zlib=/usr/lib
 I have the same error
 What does happen and is this problem known?

 Thank you for a response 
 Thanh you also to openssh team.

 Sincerly yours
 Alain MOREL
 Universite Paris13
 Institut Galilee - SERCAL
 99 Avenue Jean-Baptiste Clement
 93430 Villetaneuse
 Tel : 33 1 49 40 36 19