The "OPENSSLDIR" setting of the library build in the form "OPENSSLDIR: "...""
if available or "OPENSSLDIR: N/A" otherwise.
+=item OPENSSL_ENGINES_DIR
+
+The "ENGINESDIR" setting of the library build in the form "ENGINESDIR: "...""
+if available or "ENGINESDIR: N/A" otherwise.
+
=back
For an unknown B<t>, the text "not available" is returned.