Created attachment 27020 [details] Patch to Makefile.in a patch for APR's build system (trunk) so that httpd won't need a complete source tree to find it, but will be happy with an installed version. Please also refer to: http://mail-archives.apache.org/mod_mbox/apr-dev/201105.mbox/%3C9940e262-86f7-42e4-a9d5-d1c729fb2c2e@iris%3E
Commit to applying this, it is the behavior of most linux vendors. We likely need something sensible for win32 in these regards.