use Apache::Constants / mod_perl2 / command line

Here's the problem I'm trying to solve:

I have a lot of mod_perl 1.x source code that uses Apache::Constants.
We have just moved to mod_perl2, and I'd like to be able to
compile-check the code on the command line. In our httpd.conf we are
using Apache2::compat so we don't have to change all the constant
references to Apache2::Const.

However, to compile check the code I can't use Apache2::compat since
that seems to require that you are running in a mod_perl environment.
Are there any other quick-n-dirty solutions to this problem that I've
overlooked? I'm about to create MyOwnApache::Constants package which
emulates Apache::Constants using Apache2::Const. It seems that
Apache2::Const is usable outside of the mod_perl environment.

Running perl -MApache2::compat results in the error: Undefined
subroutine &Apache2::ServerUtil::restart_count called at
..../Apache2/compat.pm line 76.