dumb question about mod_perl architecture

[Kevin Murphy]

If a patch is applied to standalone perl on a system, does an apache 
with static mod_perl need to be rebuilt to incorporate the changes to Perl?

I understand that when you use a static mod_perl compiled into Apache, 
then the interface between Perl and Apache is compiled into the 
executable.  But how about the perl interpreter itself?  Is that also 
compiled into the web server as a static library, or is it accessed as a 
shared library?

Thanks,
Kevin