mod_cplusplus

What is the path to 'apxs'? On my Gentoo it is /usr/sbin/apxs2

$ ./autogen.sh
...
checking what the shared library extension is... could not determine shared library extension.  Defaulting to .so
.so
checking for apxs... configure: error: could not generate includes with apxs set to "" - you must specify a valid path to apxs using the --with-apxs flag

Now type 'make' to compile mod_cplusplus.
$ ./configure --with-apxs=/usr/sbin/apxs2