php 4 installation error

i try to install php 4.0.6 on a linux redhat 6.0 with apache 1.3.20 and apxs. when i execute the make command i have then following message make[1]: Entering directory `/usr/local/php-4.0.6' /bin/sh /usr/local/php-4.0.6/libtool --silent --mode=link gcc -I. -I/usr/local/php-4.0.6/ -I/usr/local/php-4.0.6/main -I/usr/local/ph p-4.0.6 -I/usr/local/apache/include -I/usr/local/php-4.0.6/Zend -I/usr/local /php-4.0.6/ext/mysql/libmysql -I/usr/local/php-4.0.6/ext/xml/expat/xmltok -I /usr/local/php-4.0.6/ext/xml/expat/xmlparse -I/usr/local/php-4.0.6/TSRM -DL INUX=22 -DUSE_HSREGEX -DUSE_EXPAT -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -o libphp4.la -rpath /usr/local/php-4.0.6/libs -avoid-version stub.lo Zend/libZend.la sapi/apache/libsapi.la main/libmain.la regex/libregex.la ext/mysql/libmysql.la ext/pcre/libpcre.la ext/posix/libposix.la ext/session/libsession.la ext/standard/libstandard.la ext/xml/libxml.la TSRM/libtsrm.la -lpam -ldl -lcrypt -lresolv -lm -ldl -lnsl -lresolv /usr/bin/ld: cannot open -lclntsh: No such file or directory collect2: ld returned 1 exit status make[1]: *** [libphp4.la] Error 1 make[1]: Leaving directory `/usr/local/php-4.0.6' make: *** [all-recursive] Error 1 thanks Olivier VIGAND TEXA Services Le Naurouze - hall b Rue CARMIN - bp 304 31313 LABEGE Cedex Tél : 05.62.48.40.23 Fax : 05.62.48.40.11 e-mail : vigand@texa.fr