smartmontools how to specify platform 10.6, 10.7, 10.8

[Jeremy Lavergne]

> Installer packages produced with "port pkg" are designed only for use on the version of OS X they were created on.
> 
> In my opinion you'd have the greatest success of creating a package compatible with 10.6 and up by running the "port pkg" command on a computer running 10.6.
> 
> If that's not an option, you *may* have success by setting macosx_deployment_target to 10.6 in macports.conf and then rebuilding all ports relevant to this package (i.e. the port's rdeps). But there are probably ports out there that don't support this setting.

Is there a way we can start enforcing/checking which deployment target is used?