我解决了.问题是我尝试通过brew安装，在brew的默认设置下，它不使用--enable-developer=yes选项.

I solved it. The problem was that I tried to install through brew, which in its default setting does not use --enable-developer=yes option.

我必须编辑公式并重新安装才能获得openDirectory驱动程序.

I had to edit the formula and reinstall in order to get the openDirectory driver.

$ brew edit freeradius-server
add: --enable-developer=yes
save the formula
$ brew reinstall -s freeradius-server