Problem with make install

Due to the way I have my Apache configuration structure, the final part of building and installing php from source doesn't complete fully. I have Apache running on a number of development and live systems and to make the management of the httpd.conf simpler, I have a number of other .conf files which are linked to httpd.conf via include directives. Apache works fine with this. One result of this is that the actual httpd.conf file is nothing more than a set of includes. I typically build new versions of php on one of the development servers and then I want to copy the required files across to the other systems - libphp4.so is the main one to go into /usr/local/apache/libexec/. I don't want to build from source on all systems. The final part of by PHP build process (configure; make; make install), make install fails because it can't find any LoadModule or AddModule directives in httpd.conf - well it won't because these are elsewhere. This shouldn't be that important as the directives I need will already be there, but I don't know if any other important part of the install is being missed out. Are other files needed or updated by make install? If anyone can help with answers, or suggestions (merging the .conf files is NOT one!) then I'd be very grateful. What would be the files to move manually after doing the configure and make stages? A colleague suggests possibly some library files. Does libphp4.so contain everything I need for a running PHP enabled server? Simon