compiler error while compiling php4.0.0 --with-apxs --with-ibm-db2

/bin/sh /home/dfallon/php-4.0.0/libtool --silent --mode=link gcc -g -O2 -Wall -o libphp4.la -rpath /home/dfallon/php-4.0.0/libs -avoid-version main.lo internal_functions.lo snprintf.lo php_sprintf.lo configuration-parser.lo configuration-scanner.lo safe_mode.lo fopen-wrappers.lo php_realpath.lo alloca.lo php_ini.lo SAPI.lo rfc1867.lo php_content_types.lo strlcpy.lo strlcat.lo mergesort.lo reentrancy.lo php_variables.lo php_ticks.lo php_virtual_cwd.lo Zend/libZend.la sapi/apache/libsapi.la regex/libregex.la ext/db/libdb.la ext/gd/libgd.la ext/mysql/libmysql.la ext/odbc/libodbc.la ext/pcre/libpcre.la ext/posix/libposix.la ext/session/libsession.la ext/standard/libstandard.la ext/xml/libxml.la -lgdbm -ldb2 -lpam -ldl -lgd -lresolv -lm -ldl -lcrypt -l nsl -lresolv /usr/bin/ld: cannot open -ldb2: No such file or directory collect2: ld returned 1 exit status make[1]: *** [libphp4.la] Error 1 make[1]: Leaving directory `/home/dfallon/php-4.0.0' make: *** [all-recursive] Error 1 Any thoughts?