PHP installation on AIX

Hello, As we attempted to install PHP on our AIX server running Sun ONE web server we ran into the following error: configure: error: ZTS currently requires working POSIX threads. We were unable to verify that your system supports Pthreads. The configure command used was: ../configure --prefix=<DIR> --disable-cli --with-openssl=<SSLDIR> --with-curl=<CURLDIR> --with-mysql=<MYSQLDIR> --enable-libgcc --with-nsapi=<WEBSERVER_DIR> We couldn't find the parameter to disable ZTS. If you have any suggestions they would be of much help. Thank you, Jeff Miller Ecommerce Phone: 260-0505 Email: JGMiller@scj.com Building 11-2 :: MS 57