Xcode: What is LastUpgradeCheck?

Question

I did a git diff and saw in Project.xcodeproj/project.pbxproj:

    attributes = {
            BuildIndependentTargetsInParallel = YES;
+           LastUpgradeCheck = 0420;
    };

What's LastUpgradeCheck? Maybe I accidentally opened up the project with Xcode 4.2?

we get this, too. Would be nice to know how to turn it off – Matt Rogish Oct 12 '11 at 18:57 — Matt Rogish, Oct 12 '11 at 18:57

score 2 · Answer 1 · answered Oct 13 '11 at 04:03

I think this happens when Xcode asks you to "modernize settings", and you do it or decline it (take action).

I think it also happens on Xcode dot releases; do you have a team of people that use different versions of Xcode? Or maybe a Lion system with 4.1/4.2 and a Snow Leopard system with 3.2.6?

Xcode: What is LastUpgradeCheck?

1 Answers1