Feature #21277: Windows ARM support

• Status: Open
• Assignee: hsbt (Hiroshi SHIBATA)
• Target version: -

[hsbt (Hiroshi SHIBATA)]

I added the new CI job for Windows ARM support.

• https://github.blog/changelog/2025-04-14-windows-arm64-hosted-runners-now-available-in-public-preview/
• https://github.com/ruby/ruby/pull/13118

We could build Ruby with Windows ARM platform. But nmake check is not working yet. I'm tracking that issues on this ticket.

Can't generate revision.h

windows-11-arm runner couldn't generate revision.h with ruby tool/file2lastrev.rb --revision.h --output=revision.h. I tried that with git provided by scoop. But that is also not working.

I confirmed to work git rev-parse HEAD directly with pwsh of GitHub Actions. But tool/file2lastrev.rb returns the followings:

Run ruby tool/file2lastrev.rb --revision.h --output=revision.h
  
file2lastrev.rb: git rev-parse failed
  fatal: unable to access 'NUL': Invalid argument

nmake check is not working

https://github.com/ruby/ruby/actions/runs/14564201209/job/40851166866

running file: C:/a/ruby/ruby/src/test/rubygems/test_gem_resolver_index_set.rb
  A test worker crashed. It might be an interpreter bug or
  a bug in test/unit/parallel.rb. Try again without the -j
  option.

https://github.com/ruby/ruby/actions/runs/14564667517/job/40852193517

  NMAKE : fatal error U1077: '@  .\ruby.exe -I../src/lib -I".ext/arm64-mswin64_140" -I. "../src/tool/runruby.rb" --extout=".ext"  -- --disable-gems -r./arm64-mswin64_140-fake -r../src/tool/lib/_tmpdir  ../src/spec/mspec/bin/mspec run -B ../src/spec/default.mspec  ' : return code '0xc0000005'
  Stop.

They may be caused by Visual Studio 2022 issue same as #21255.