I usually use a startup script for mod_perl where I do "use lib". i.e., put something like the following in httpd.conf: 
PerlRequire "/var/www/cgi-bin/mod_perl_startup.pl"

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Then in mod_perl_startup.pl, I add: 
use lib qw(/path_to_your_lib);

use Apache::Log();
use Apache::DBI();
# and any other module you want to load

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In reply to Re: mod_perl, PerlSetEnv, and PERL5LIB by johnnywang
in thread mod_perl, PerlSetEnv, and PERL5LIB by geektron

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