...

define Package/wget/Default
  SECTION:=net
  CATEGORY:=Network
  TITLE:=Non-interactive network downloader
  URL:=http://www.gnu.org/software/wget/index.html
  MENU:=1
endef

define Package/wget
  $(call Package/wget/Default)
  DEPENDS+= +libopenssl
  TITLE+= (with SSL support)
endef

define Package/wget-nossl
  $(call Package/wget/Default)
  TITLE+= (without SSL support)
endef

...

$(eval $(call BuildPackage,wget))
$(eval $(call BuildPackage,wget-nossl))