I find the following error when I installed httpd-2.2.21:
checking for APR-util version 1.2.0 or later... no
configure: error: APR-util version 1.2.0 or later is required
I've installed apr-1.4.5, apr-util-1.3.12. then i do configure:
./configure --prefix=/usr/local/apache --with-apr=/usr/local/apr/bin/apr-1-config --with-apr-util=/usr/local/apr-util/bin/apu-1-config --enable-so --enable-dav --enable-maintainer-mode --enable-rewrite
I don't know why.