# cp /httpdのフォルダパス/build/rpm/httpd.init /etc/rc.d/init.d/httpd

etc/rc.d/init.d/httpd ファイルを以下のように変更

#apachectl=/usr/sbin/apachectl
apachectl=/usr/local/apache2/bin/apachectl

#httpd=${HTTPD-/usr/sbin/httpd}
httpd=${HTTPD-/usr/local/apache2/bin/httpd}

#CONFFILE=/etc/httpd/conf/httpd.conf
CONFFILE=/usr/local/apache2/conf/httpd.conf