depends pkgconfig '--enable-pkgconfig' && depends libxml2 '--with-libxml=/usr' && optional_depends libxslt '--with-libxslt=/usr' '--without-libxslt' 'for XSLT-related functions' && echo && message "You have to pick at least one of the following dependencies!" && optional_depends gnutls '--with-gnutls=/usr' '--without-gnutls' 'for encrypted communications' && optional_depends nss '--with-nss=/usr' '--without-nss' 'for encrypted communications' && optional_depends SSL '--with-openssl=/usr' '--without-openssl' 'for encrypted communications' && if ! is_depends_enabled $SPELL gnutls && ! is_depends_enabled $SPELL nss && ! is_depends_enabled $SPELL libressl && ! is_depends_enabled $SPELL openssl; then message "${PROBLEM_COLOR}No backend was chosen, forcing SSL!$DEFAULT_COLOR" depends SSL fi