Configuring PHP 5.2.0 with Postgres 8.1.3 (no source)

I'm trying to configure PHP 5.2.0 with support for Postgres 8.1.3. Postgres was installed with FC5 without source. PHP's configure needs source. When I run configure:

    configure: error: Cannot find libpq-fe.h. Please specify
    correct PostgreSQL installation path

I tried downloading Postgres source and modifying PHPs configure to point to it, and that worked. But then compilation failed, e.g.

    In file included from /home/jao/php-5.2.0/ext/pgsql/php_pgsql.h:32,
                 from /home/jao/php-5.2.0/ext/pgsql/pgsql.c:45:
    /usr/local/src/postgresql-8.1.4/src/interfaces/libpq/libpq-fe.h:29:26: error: postgres_ext.h: No such file or directory
    In file included from /home/jao/php-5.2.0/ext/pgsql/php_pgsql.h:32,
                 from /home/jao/php-5.2.0/ext/pgsql/pgsql.c:45:
    /usr/local/src/postgresql-8.1.4/src/interfaces/libpq/libpq-fe.h:317: error: expected ';', ',' or ')' before '*' token

Then I thought I'd uninstall the postgres RPMs and build postgres from scratch, but there are dependencies on postgres: libpq.so.4 is needed by (installed) apr-util-1.2.2-4.2.i386 libpq.so.4 is needed by (installed) dovecot-1.0-0.beta2.7.i386 libpq.so.4 is needed by (installed) perl-DBD-Pg-1.43-2.2.2.i386 And I really don't want to unravel my entire set of RPMs. So I have two questions: 1) Does PHP 5.2.0 support Postgres 8.x? The compilation errors, and some of the postgres paths in the configure file suggest that it might not. 2) How can I get PHP configured to support postgres? Jack Orenstein