BUG #1095: make can't find plperl

The following bug has been logged online:

Bug reference:      1095
Logged by:          Costin

Email address:      siderite@go.ro

PostgreSQL version: 7.4

Operating system:   Slackware Linux 9.1

Description:        make can't find plperl

Details:

  I am trying to configure PostgreSQL 7.4.2 with Perl 5.8.3 or 5.9.0. I
compiled both versions of Perl, with shared libraries and with no shared
libraries. Then I 'configure'd postgres with '--with-perl' with no error.
  Every time I run 'make', though, I get an error that it does not find
/pl/plperl. The problem is described by only one person I could find at url:
http://archives.postgresql.org/pgsql-bugs/2003-09/msg00184.php.
   What do I do? please reply, I feel that I've tried everything but
manually reprogramming perl and postgres!