I was able to compile php without database support
and it worked fine for hp-ux 11, now I am trying to
make it use my PostgreSQL database, I gave the following
options to the configure script:

./configure --without-mysql --with-pgsql --with-apxs=/usr/local/apache-1.3.20/bin/apxs

PostgreSQL 7.1.3 is installed in the default
location /usr/local/pgsql

Make and make install go without problems until we
have to restart apache, when we are presented with:

     /usr/lib/dld.sl: Unresolved symbol: PQuntrace (code)  from /usr/local/apache-1.3.20/libexec/libphp4.so
/usr/lib/dld.sl: Unresolved symbol: PQgetvalue (code)  from /usr/local/apache-1.3.20/libexec/libphp4.so
... <a lot of errors caused by symbols from libpq intentionally deleted>...
Cannot load /usr/local/apache-1.3.20/libexec/libphp4.so into server: Unresolved

All the unresolved symbols appear to come from libpq.sl
libtool presents us with this warning during compilation:

*** Warning: inter-library dependencies are not known to be supported.
*** All declared inter-library dependencies are being dropped.
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.