no libphp4.so after make install

So you've run ./configure with your favorite parameters, done 'make', and then under root done a 'make install' but libphp4.so doesn't get updated (for Apache).

You might be missing this parameter: --with-apxs OR --with-apxs2, depending on your Apache version.

run 'make clean dist' and then start over again, this time with these parameters added on. Then when you run 'sudo make install', you should see a line like this in the output:

cp libs/libphp4.so /usr/libexec/httpd/libphp4.so

Check ./configure --help for more.