PHP - ¡Urgente!

Hola, intento usar PEAR para instalar los paquetes OLE y Spreadsheet_Excel_Writer. El error es básicamente que 'casca' porque dice que no encuentra la librería 'zlib' y me pide que compruebe que el PHP está compilado con la opción --with-zlib (The extension 'zlib' couldn't be found. Please make sure your version of PHP was built with 'zlib' support.) Según el comando de configuración, parece que todo está bien.

estoy ejecutando: pear install OLE-0[1].5.tgz

Apache/1.3.27 (Debian GNU/Linux) PHP/4.3.3RC3

ZLib Support enabled
Compiled Version 1.1.4
Linked Version 1.1.4

zlib.output_compression Off
zlib.output_compression_level -1
zlib.output_handler no value no

Configure Command '../configure' '--prefix=/usr' '--with-apxs=/usr/bin/apxs' '--with-regex=php' '--with-config-file-path=/etc/php4/apache' '--disable-rpath' '--disable-debug' '--enable-memory-limit' '--with-layout=GNU' '--with-pear=/usr/share/php' '--enable-calendar' '--enable-sysvsem' '--enable-sysvshm' '--enable-track-vars' '--enable-trans-sid' '--enable-bcmath' '--with-bz2' '--enable-ctype' '--with-db4' '--with-iconv' '--enable-exif' '--enable-filepro' '--enable-ftp' '--with-gettext' '--enable-mbstring' '--with-pcre-regex=/usr' '--enable-shmop' '--enable-sockets' '--enable-wddx' '--disable-xml' '--with-expat-dir=/usr' '--enable-yp' '--with-zlib' '--without-pgsql' '--with-kerberos=/usr' '--with-openssl=/usr' '--with-exec-dir=/usr/lib/php4/libexec' '--disable-static' '--with-curl=shared,/usr' '--with-dom=shared,/usr' '--with-dom-xslt=shared,/usr' '--with-dom-exslt=shared,/usr' '--with-zlib-dir=/usr' '--with-gd=shared,/usr' '--with-jpeg-dir=shared,/usr' '--with-xpm-dir=shared,/usr/X11R6' '--with-png-dir=shared,/usr' '--with-freetype-dir=shared,/usr' '--with-imap=shared,/usr' '--with-imap-ssl' '--with-ldap=shared,/usr' '--with-mcal=shared,/usr' '--with-mhash=shared,/usr' '--with-mm' '--with-mysql=shared,/usr' '--with-unixODBC=shared,/usr' '--with-recode=shared,/usr' '--enable-xslt=shared' '--with-xslt-sablot=shared,/usr' '--with-snmp=shared' '--enable-ucd-snmp-hack' '--with-sybase-ct=shared,/usr' '--with-ttf=shared,/usr' '--with-t1lib=shared,/usr'

Gracias.
Mary.