ActivePerl 2201 -- Release Notes

Welcome, and thank you for downloading ActivePerl. This release corresponds to Perl version 5.22.1.

The following platforms are supported by this release:

For a chronological list of changes included in this and past releases, see the ActivePerl 5.22 Change Log.


Perl 5.22 is not binary compatible with Perl 5.20 and earlier releases. In particular, do not attempt to use extensions or PPM packages built for ActivePerl 2000 and older series builds with ActivePerl 2200 series builds and vice versa. Please check "Incompatible Changes" in perl5220delta for known source level incompatibilities between the Perl 5.22 releases and the earlier release series.

Known Issues


There are some known outstanding issues with the PPM 4 client:


Mac OS X


Further Information

The Perl distribution comes with extensive documentation. On Unix platforms, all the standard documentation is installed as man pages under the Perl install location. The location of the man pages may need to be added to the MANPATH environment variable in order to access them. For example, in the C shell:

    % setenv MANPATH /opt/ActivePerl-5.22/man:$MANPATH

The documentation is installed in HTML format on all platforms. If ActivePerl was installed in /opt/ActivePerl-5.22 then the HTML documentation would be located in /opt/ActivePerl-5.22/html.

On Windows, the standard documentation along with Windows-specific Perl documentation is installed in HTML format, and is accessible from the "Start" menu.

Updated versions of the HTML documentation will always be available at the ActiveState website:

Reporting Problems

Please report any bugs you encounter with this release in the ActiveState bug database:

If you do not have web access, reports can be also sent via email to Please be sure to include detailed information about the platform in your message.

As far as possible, please ensure that there is enough information in the report to reproduce the bug elsewhere. It also helps to submit a minimal test case that exhibits the bug.

ActivePerl Community Edition Support Policy

The two most recent stable releases are available for free download. This corresponds to the Perl community's own version support policy.

Whenever the underlying Perl version becomes "unsupported" by the Perl community itself, support for the corresponding ActivePerl versions will be limited to Business Edition and Enterprise Edition customers.

You can continue to use older ActivePerl releases indefinitely under the terms of the Community Edition license, but won't be able to download the installers from ActiveState.

The PPM repositories for unsupported ActivePerl releases will remain freely accessible for at least 6 months after support ends, but will no longer be updated with new builds from CPAN.