https://www.apachehaus.net/modules/
http://www.apachelounge.com/viewtopic.php?p=24952

cl.exe /MD /W3 /O2 /D WIN32 /D NDEBUG -I"c:\Apache22\include" -c mod_rpaf-2.0.c
link.exe /dll /machine:AMD64 /OUT:mod_rpaf.so /libpath:"c:\Apache22\lib" mod_rpaf-2.0.obj libapr-1.lib libhttpd.lib ws2_32.lib

https://www.apachehaus.com/forum/index.php?topic=147.0