PHP4 and IB SS 6.01

I am having a problem creating a version of PHP4 that has IB SS 6.01 included. The HowTo provided by RedHat does not have Interbase listed, so the closest I I come is there PostgreSQL. Currently, the IB SS rpm puts Interbase into /opt/interbase. Here are the instructions in the HowTo +++ 4.Change to the PHP directory, configure PHP with PostgreSQL support where the PostgreSQL header files directory is /usr/include/pgsql, install directory is /usr/local/php4, build and install PHP: $ cd php-4.0.4pl1 $ ./configure --with-pgsql=/usr/include/pgsql --prefix=/usr/local/php4 $ make $ make install +++ Using $./configure --with-interbase=/opt/interbase --prefix=/usr/local/php4 produces an error: "Cannot find httpd.h" or something close to that. Has anyone installed Interbase SS 6.01 with PHP4 on a RedHat 7.2 platform? Todd -- Todd Cary Ariste Software todd@aristesoftware.com