# Config::Extensions - phpMan

## NAME
    [Config::Extensions] - hash lookup of which core extensions were built.

## 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>>