I actually prefer using MakeMaker (and h2xs) to perform this kind of task. MM allows you to specify perl programs to run at compile time as arguments to the WriteMakefile() routine: 
WriteMakefile(
    NAME              => 'Test::Bin',
    VERSION_FROM      => 'lib/Test/Bin.pm', # finds $VERSION
    PREREQ_PM         => {}, # e.g., Module::Name => 1.1
    PL_FILES          =>
      { 'bin/test.PL $(INSTALLSITELIB) $(INSTALLSITEARCH)'
               => 'lib/Test/Bin.pm' },
);

[download]
The PL_FILES attribute allows you to specify the .PL files and which files they should modify. I add the $(INSTALLSITELIB) $(INSTALLSITEARCH) as arguments so the perl program will receive those macros from the makefile. Then, for example, I would transform a package like the following: 
package Test::Bin;

use 5.008002;
use strict;
use warnings;

use '###LIBPREFIX###';   # Use some easily matchable phrases
use '###ARCPREFIX###';   

1;
__END__

[download]
by using this .PL file: 
#!/usr/bin/perl -w -pi~
# Use command line options to read and write file(s).

use strict;
our ($lib, $arc);

BEGIN {
  $lib = shift @ARGV;  # Shift off the arguments so they are
  $arc = shift @ARGV;  # not processed as files
}

s/\Q###LIBPREFIX###\E/$lib/;  # perform substitutions
s/\Q###ARCPREFIX###\E/$arc/;

1;

__END__

[download]
The end result is at least similar to what you are looking for: 
package Test::Bin;

use 5.008002;
use strict;
use warnings;

use '/home/orderthruchaos/local/lib/perl5/site_perl/5.8.2';
use '/home/orderthruchaos/local/lib/perl5/site_perl/5.8.2/i686-linux';

require Exporter;

our $VERSION = '0.01';

1;
__END__

[download]
Hope this helps.

In reply to Re: Variable to point to library? by orderthruchaos
in thread Variable to point to library? by bradcathey

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