error: unable to load standard library for target 'arm64-apple-ios10.0-simulator'?

Question

I updated my Xcode but not able to build. It\'s failing with:

:0: error: unable to load standard library for target \'arm64-appl

Answer 1

What fixed the issue in my case was clearing the environment. Apparently when running a script build phase in Xcode, there are some environment variables set which may interfere with the resolution of the Swift standard library. I had this issue while performing a carthage build from an Xcode "Run Script" phase.

Perform a command by clearing the environment with:

env -i 

You may want to keep the PATH and DEVELOPER_DIR environment variables though, in particular when you have multiple Xcode versions installed.

so in your case

env -i DEVELOPER_DIR="$DEVELOPER_DIR" PATH="$PATH" xcodebuild ...