optional_depends nss    "" "--disable-crypto-engine-nss"     "for NSS crypto engine support"
optional_depends gnutls "" "--disable-crypto-engine-gnutls"  "for GnuTLS crypto engine support"

optional_depends %OSSL \
                 "" "--disable-openssl --disable-crypto-engine-openssl" \
                 "for OpenSSL crypto engine support"
