SDK (isysroot) selection "rules"? (Qt5 related)

[Ryan Schmidt]

On Jun 19, 2015, at 6:23 AM, René J.V. Bertin wrote:

> On Friday June 19 2015 06:02:53 Ryan Schmidt wrote:
> 
>> MacPorts always sets the MACOSX_DEPLOYMENT_TARGET environment variable, in every phase, to the value of the MacPorts Tcl variable macosx_deployment_target. The default value of macosx_deployment_target is the currently running OS X major version (like 10.8 or 10.10). It can be changed by the portfile author if needed for a particular port, or globally by the user in macports.conf. The latter is undocumented and unsupported but basically functional.
> 
> Aha! I don't have this variable in my macports.conf; has there been any change to this policy in recent months? That would be about the only logical explanation for that mysterious issue I'm seeing with the NSMetadata token (= if my earlier build where the symbol was and still is found was done targeting OS X <= 10.8).

You are correct, macosx_deployment_target is deliberately not listed in macports.conf, because it is unsupported.