How to activate an older version of a port

[Jerry]

On Jan 13, 2013, at 4:43 PM, Ryan Schmidt wrote:

> On Jan 12, 2013, at 00:39, Jerry wrote:
> 
>> Since /opt/local is seen before /usr/local/ (which has automake 1.9 in it), I want to temporarily roll back macports automake to 1.11.3. I get this:
> 
> Note that having software installed in /usr/local is likely to cause you problems with MacPorts, which is why we do not support having software installed there.
> 
> https://trac.macports.org/wiki/FAQ#usrlocal

I've read this discussion before. I thought it was OK to have stuff in subdirectories of /usr/local but not OK to have stuff /usr/local directly. Is that not correct? I know this is a flamey topic so I won't say more.

Jerry
> 
> 
>> How can I activate an older version of automake and then re-activate the newest version later?
> 
> https://trac.macports.org/wiki/howto/InstallingOlderPort
> 
> 
>