问题
I want to ship a single 32/64-bit universal binary of my desktop Mac OS X Cocoa app. I don't want to ship two versions.
I want it to run as a 64-bit process on Snow Leopard.
However, if the app is launched on Leopard, I want to always force it to run as a 32-bit process.
NOTE: I know that in the Finder 'Get Info' window you can click the 'Open in 32-bit mode' checkbox to achieve this. That's nice, but what I really want is a way to automatically, always force this behavior on Leopard only. On Snow Leopard the app should run 64-bit unless the user wants to change the setting mentioned above.
Can this be done? If so, how? thx.
回答1:
Set the minimum system version per architecture key in your Info.plist file :)
来源：https://stackoverflow.com/questions/1549143/force-a-mac-os-x-32-64-bit-universal-binary-to-run-32-bit-on-an-old-os-version-o