Swift 6.0: Windows arm64 toolchain fails to build

[shahmishal]

Description

CMake Error at C:/Program Files/CMake/share/cmake-3.29/Modules/CMakeTestSwiftCompiler.cmake:40 (message):
  The Swift compiler

    "T:/1/bin/swiftc.exe"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: 'T:/102/CMakeFiles/CMakeScratch/TryCompile-xwytmb'
    
    Run Build Command(s): C:/PROGRA~1/MICROS~2/2022/COMMUN~1/Common7/IDE/COMMON~1/MICROS~1/CMake/Ninja/ninja.exe -v cmTC_9c8b2
    [1/2][ 50%][0.009s]T:\1\bin\swiftc.exe -target x86_64-unknown-windows-msvc -j 36 -num-threads 36 -c  -module-name cmTC_9c8b2 -resource-dir T:/101/lib/swift -L T:/101/lib/swift/windows -vfsoverlay T:/101/stdlib/windows-vfs-overlay.yaml -strict-implicit-module-context -Xcc -Xclang -Xcc -fbuiltin-headers-in-system-modules -gnone -Xlinker /INCREMENTAL:NO -Xlinker /OPT:REF -Xlinker /OPT:ICF  -incremental -output-file-map CMakeFiles\cmTC_9c8b2.dir\\output-file-map.json  T:\102\CMakeFiles\CMakeScratch\TryCompile-xwytmb\main.swift
    FAILED: CMakeFiles/cmTC_9c8b2.dir/main.swift.obj 
    T:\1\bin\swiftc.exe -target x86_64-unknown-windows-msvc -j 36 -num-threads 36 -c  -module-name cmTC_9c8b2 -resource-dir T:/101/lib/swift -L T:/101/lib/swift/windows -vfsoverlay T:/101/stdlib/windows-vfs-overlay.yaml -strict-implicit-module-context -Xcc -Xclang -Xcc -fbuiltin-headers-in-system-modules -gnone -Xlinker /INCREMENTAL:NO -Xlinker /OPT:REF -Xlinker /OPT:ICF  -incremental -output-file-map CMakeFiles\cmTC_9c8b2.dir\\output-file-map.json  T:\102\CMakeFiles\CMakeScratch\TryCompile-xwytmb\main.swift
    ninja: build stopped: subcommand failed.
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:168 (enable_language)


-- Configuring incomplete, errors occurred!
Error: Error: cmake.exe exited with code 1.

Reproduction

https://ci-external.swift.org/job/swift-6.0-windows-toolchain-arm64/137/console

Expected behavior

n/a

Environment

n/a

Additional information

No response

[shahmishal]

cc: @compnerd

[hjyamauchi]

@shahmishal The CI is green now! https://ci-external.swift.org/job/swift-6.0-windows-toolchain-arm64/
Can we close this issue?
CC @compnerd

[shahmishal]

Yes, thank you!