Not a direct answer, but when using Apache, I normally use Server Side Includes (SSI) for this sort of thing. The main files are commonly named with a shtml suffix (configurable) and can include tags like
<!--#include virtual="/common/header.inc-->
to bring in reusable elements.

Someone else will certainly post Perl-specific solutions but you might see if this simple approach would be permitted.

Update: fixed botched link

In reply to Re: Includes in Perl by igelkott
in thread Includes in Perl by Rachy222

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