Hi!
The error is quite clear and the fix worked for me (with the same MacOS and XCode version as you described) – so it’s strange that you still get this message.
Can you please have a last try:
– Open XCode standalone to see if any messages or additional updates/tools to install pop up (accept or install if necessary)
– Open the file <FelgoSDK>/5.7/clang_64/mkspecs/features/mac/default_pre.prf
– Search for the following code-block (responsible for the error message) and make sure that xcodebuild is used instead of xcrun:
# Make sure Xcode is set up properly
isEmpty($$list($$system("/usr/bin/xcrun -find xcodebuild 2>/dev/null"))): \
error("Xcode not set up properly. You may need to confirm the license agreement by running /usr/bin/xcodebuild.")
Note that only the xcrun command between -find and 2>/dev/null should be replaced.
– Please also delete the build directory of your project (if exists) and also the *.pro.user file of your project
– Close and reopen Qt Creator and the project
It should be possible to read and build the project with the clang_64 kit then. If the message still pops up, maybe additionally accepting the license as described here helps.
Does it still not work?