problem installing PHP4 with apxs & linux

Hi, I'm having a problem with myPHP4 installation concerning which i couldn't find any help in the archives. After making PHP4, i try to start apache but it gives me the message: Syntax error on line 207 of /usr/local/apache/conf/httpd.conf: Cannot load /usr/local/apache/libexec/libphp4.so into server: /usr/local/apache/libexec/libphp4.so: undefined symbol: uncompress Any idea why this could be happening ? (at this point i should specify i'm a linux newbie) thx for help, nick