Link: mod_authnz_ldap and ActiveDirectory Group Authentication
At the end of it, CSVDE is the tool which gets you the correct LDAPURL string
One of my production servers has Subversion already installed. ( which means apr is already installed ! )
When I wanted to compile and install apache2, configure would not allow me to do and exited with this error
Configuring Apache Portable Runtime library ...
checking for APR... yes
setting CC to "gcc"
setting CPP to "gcc -E"
setting CFLAGS to " -g -O2"
setting CPPFLAGS to " -D_THREAD_SAFE -D_REENTRANT"
setting LDFLAGS to " "
Configuring Apache Portable Runtime Utility library...
checking for APR-util... reconfig
configure: error: Cannot use an external APR with the bundled APR-util