Comparing directories in perl

I am trying to do the following in my perl script:

Compare 2 directories

#First compare, write "Only in" results to a file.
system "diff --recursive --brief test1/ test2/  | grep 'Only in' > outputOnlyInFile";

#Second compare, write "Files are different" results to a file.
system "diff --recursive --brief test1/ test2/ | grep 'differ' > outputDifFile";

However, here are the problems I am having with this approach:

1. Doing 2 diffs - too slow.  Solution: break it down to one diff then write "Only in" and "differ" lines to 2 different files.

2. There are different versions of diffs - on solaris and linux.  I believe the solaris 2.9 version of diff does not support the "--recursive" and "--brief" options.

What I would like to do is compare the directories without using the diff utilility.
How could I attempt to do this in perl?  Are there perl modules I could use which would do this?
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use File::Dircmp;

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