Install Excell lib di linux

[root@localhost package_install_frsource_batulayang]# /usr/local/apache2/php/bin/pear install OLE-0.5.tar
PHP Warning: PHP Startup: Unable to load dynamic library './/usr/local/apache2/php/lib/php/extensions/no-debug-non-zts-20060613/pdf.so' - .//usr/local/apache2/php/lib/php/extensions/no-debug-non-zts-20060613/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
install ok: channel://pear.php.net/OLE-0.5
[root@localhost package_install_frsource_batulayang]# /usr/local/apache2/php/bin/pear install Spreadsheet_Excel_Writer-0.9.1.tar
PHP Warning: PHP Startup: Unable to load dynamic library './/usr/local/apache2/php/lib/php/extensions/no-debug-non-zts-20060613/pdf.so' - .//usr/local/apache2/php/lib/php/extensions/no-debug-non-zts-20060613/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
install ok: channel://pear.php.net/Spreadsheet_Excel_Writer-0.9.1
[root@localhost package_install_frsource_batulayang]#