There really is nothing to find here
Except for: The Apache+PHP+SSL+frontpage-Howto. You can view it as singlepage HTML, multipage HTML, ASCII text or SGML source
The document is about Apache 1.2 but can also give you some hints when compiling a 1.3 version (besides, RTR still features a 1.2.5 version ;-). The actual version should also be available at your nearest sunsite mirror