The "Configure" target of the library build in the form "platform: ..."
if available or "platform: information not available" otherwise.
+=item SSLEAY_DIR
+
+The "OPENSSLDIR" setting of the library build in the form "OPENSSLDIR: "...""
+if available or "OPENSSLDIR: N/A" otherwise.
+
=back
=head1 RETURN VALUES
L<crypto(3)|crypto(3)>
+=head1 HISTORY
+
+B<SSLEAY_DIR> was added in OpenSSL 0.9.7.
+
=cut