See the HTML documentation in the doc-html directory for installation
instructions and documentation.
If you can't read instructions:
$ ./configure --with-apxs=/usr/local/apache/sbin/apxs
$ make
$ su
# make install
Edit httpd.conf like instructions at the end of "make install"
tell you.
If the above worked - read the tutorial in the doc directory.
OS Hints:
FreeBSD: Apache has to be compiled with threads, even if using the
prefork MPM (recommended). In the ports collection, edit the
Makefile to add --enable-threads in the CONFIGURE_ARGS
section.
This has been tested on FreeBSD 4.7; it is possible that
earlier versions of FreeBSD may have issues with httpd's
use of threads.