Xcode 8.3.2 fails to successfully build 4.15.1 from source code

Attempting to build 4.15.1 from source code using Xcode 8.3.2 currently results in the build failing due to warnings that occur in fbxsdk, AlembicImporter, and MetalRHI.

1. Download the 4.15.1 source code from GitHub.
2. Run Setup.command.
3. Run GenerateProjectFiles.command.
4. Open the UE4 workspace in Xcode.
5. Build the UE4 scheme in Development Editor configuration.

RESULT:
The build will fail with several warnings in fbxsdk, AlembicImporter, and MetalRHI.

EXPECTED:
The build completes successfully.

WORKAROUND:
Remove the -Werror command line parameter in UBT or revert to Xcode 8.2.