Configure question?

I'm just now installing postgresql 7.0.3, apache 1.3.14 and php 3.0.18.  i
have successfully installed postgres, i have configured apache, and i was
configuring php, when at the very end of the configuration, i got a

configure: error: Invalid Apache directory - unable to find httpd.h under
../apache-_1.3.14

I did a file find and httpd.h is under /usr/src/apache_1.3.14/src/include.

Can anyone tell me what to do here?

Thanks,

michael