- use Config::Extensions '%Extensions';
- if ($Extensions{PerlIO::via}) {
- # This perl has PerlIO::via built
- }
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:
The extension is dynamically linked
The extension is pure perl, so doesn't need linking to the perl executable
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.
Nicholas Clark <nick@ccl4.org>