RT installed in a subdirectory (without a RT specific virtual host)

Hello all,

this question appears in the archive but the suggested answer does not
quite work; I am hoping some of you will be able to suggest solutions.
My problem is that I am trying to install RT on an existing web server
(Apache 2.x with mod_perl2 on Ubuntu8), in a sub-directory. I went
through the configure/install steps, installing RT into /tools/pkgs/
rt-3.8.6. Now in trying to configure the web interface I hit various

Say my site is “http://example.com” and I want RT to be at “http://example.com/rt
”. I configured RT_SiteConfig and set WebPath to “/rt”. I changed /etc/
apache2/sites-enabled/000-default and added:

Alias /rt “/tools/pkg/rt/share/html”

<Location /rt/>
SetHandler perl-script
PerlHandler RT::Mason

(where /tools/pkg/rt is a symlink to /tools/pkg/rt-3.8.6)

The problem now is that I have to add:

PerlRequire /tools/pkg/rt/bin/webmux.pl

and according to some docs, also:

PerlModule Apache::DBI

These directives are permitted only at the global or server context,
so given my sub-directory based RT setup (rather than a RT dedicated
virtualhost) I have to add them to the top/global configuration. Or is
there a way around?

When I do add these to the global config, I still get errors:

Can’t locate /tools/pkg/rt/bin/webmux.pl in @INC (@INC contains: /
tools/pkgs/rt/bin /etc/perl /usr/local/lib/perl/5.8.8 /usr/local/share/
perl/5.8.8 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.8 /usr/
share/perl/5.8 /usr/local/lib/site_perl . /etc/apache2)

Apache/mod_perl config seems to restrict loading of PerlRequires from
only @INC. I have started reading through the mod_perl docs to find
out how to relax this, especially for an absolute path as above for
webmux.pl. But perhaps someone here knows the way to fix this already?

I would greatly appreciate any solutions or pointers to solutions for
both issues above.