$ cd httpd-2.4.20
$ ./configure \
--prefix=/opt/apache-2.4.20 \
--enable-ssl \
--with-mpm=event \
--enable-rewrite \
--enable-proxy \
--enable-layout=Debian \
--enable-so \
--with-suexec-caller=www-data \
--with-suexec-docroot=/var/www \
--enable-deflate \
--enable-headers \
--with-program-name=apache2
$ make && make install