我在Ubuntu16.04上构建了emacs26，执行./config --prefix=/usr/local/emacs后显示如下：
configure: error: The following required libraries were not found:
gnutls
Maybe some development libraries/packages are missing?
If you don't want to link with them give
--with-gnutls=no
as options to configure
我试图解决这个问题很多次，但是失败了。谁能帮助我，非常感谢。