Building a debug version of log4cxx

[Peter Steele]

We've been getting some core dumps in our application that are appear to
be occurring in the middle of calls in the log4cxx library. We want to
build a debug version of log4cxx for our FreeBSD boxes so we can
properly analyze the core dumps with gdb. What's the trick in build a
debug version of log4cxx? Can both the debug and release versions be
installed on the same system?