I was looking at http://httpd.apache.org/docs-2.0/developer/debugging.html
and it seems to be incorrect.
I can't seem to find any of the #defines mentioned here, only APR_POOL_DEBUG.
Is there any updated debugging doc?
this isn't exactly what you were looking for, but try
srclib/apr/configure --help | grep pool
more doc is needed, of course :(
