depends gcc &&
depends autoconf &&
depends automake &&

depends nspr &&

optional_depends SSL    "--enable-crypto-engine-openssl" "--disable-crypto-engine-openssl" "for OpenSSL crypto engine" &&
optional_depends nss    "--enable-crypto-engine-nss"     "--disable-crypto-engine-nss"     "for NSS crypto engine"     &&
optional_depends gnutls "--enable-crypto-engine-gnutls"  "--disable-crypto-engine-gnutls"  "for GnuTLS crypto engine"
