Resolving platform SDK Warning on macOS

[ericg_97477]

I am getting the following warnings:

Project WARNING: Qt has only been tested with version 10.15 of the platform SDK, you're using 11.0.
Project WARNING: This is an unsupported configuration. You may experience build issues, and by using
Project WARNING: the 11.0 SDK you are opting in to new features that Qt has not been prepared for.
Project WARNING: Please downgrade the SDK you use to build your app to version 10.15, or configure
Project WARNING: with CONFIG+=sdk_no_version_check when running qmake to silence this warning.

I am not sure how to resolve this problem.

I am using:

Qt Creator 4.13.2
Based on Qt 5.15.1 (Clang 11.0 (Apple), 64 bit)
Built on Oct 1 2020 01:16:45

I have Xcode Version 12.2 (12B45b) installed.

$ xcodebuild -showsdks
iOS SDKs:
	iOS 14.2                      	-sdk iphoneos14.2

iOS Simulator SDKs:
	Simulator - iOS 14.2          	-sdk iphonesimulator14.2

macOS SDKs:
	DriverKit 20.0                	-sdk driverkit.macosx20.0
	macOS 11.0                    	-sdk macosx11.0

tvOS SDKs:
	tvOS 14.2                     	-sdk appletvos14.2

tvOS Simulator SDKs:
	Simulator - tvOS 14.2         	-sdk appletvsimulator14.2

watchOS SDKs:
	watchOS 7.1                   	-sdk watchos7.1

watchOS Simulator SDKs:
	Simulator - watchOS 7.1       	-sdk watchsimulator7.1

I assume the warning is based on finding: macOS 11.0 -sdk macosx11.0

When I ran the Qt installer, I selected the Qt version 5.12.10 of the components.

If more information is required, please let me know.

Suggestions?

[ericg_97477]

I downloaded Xcode 11.7 and executed

sudo xcode-select -s /Applications/Xcode_11_7.app/Contents/Developer

xcodebuild -showsdks then shows macOS 10.15 -sdk macosx10.15.

However, Qt Creator does not honor what is selected with xcode-select.

The solution appears to be:

1. go to Projects -> Build & Run -> Desktop Qt 5.12.10 clang 64.bit -> Build.

2. go to the Build Environment section and edit the PATH.

The path will contain

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

I changed it to:

/Applications/Xcode_11_7.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

which is the location where I installed Xcode 11.7.

The warnings have disappeared.

If there is a better solution or something I have missed, I would be interested.

If someone can confirm this is the correct solution, that would be appreciated.