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# Config::Extensions

Perl 5 version 10.1 documentation
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# Config::Extensions

- SYNOPSIS
- DESCRIPTION
- AUTHOR

# SYNOPSIS

        use Config::Extensions '%Extensions';    if ($Extensions{PerlIO::via}) {        # This perl has PerlIO::via built    }

# DESCRIPTION

The Config::Extensions module provides a hash `%Extensions` containing all the core extensions that were enabled for this perl. The hash is keyed by extension name, with each entry having one of 3 possible values:

- dynamic

  The extension is dynamically linked

- nonxs

  The extension is pure perl, so doesn't need linking to the perl executable

- static

  The extension is statically linked to the perl binary

As all values evaluate to true, a simple `if` test is good enough to determine whether an extension is present.

All the data uses to generate the `%Extensions` hash is already present in the `Config` module, but not in such a convenient format to quickly reference.

# AUTHOR

Nicholas Clark <nick@ccl4.org>

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