===> Building for ruby40-opengl-0.60.1nb6
=> Removing backup files of patch before build
WARNING:  expected RubyGems version 4.0.3, was 1.2.0
WARNING:  licenses is empty, but is recommended. Use an license identifier from
https://spdx.org/licenses or 'Nonstandard' for a nonstandard license,
or set it to nil if you don't want to specify a license.
WARNING:  deprecated autorequire specified
WARNING:  make sure you specify the oldest ruby version constraint (like ">= 3.0") that you want your gem to support by setting the `required_ruby_version` gemspec attribute
WARNING:  See https://guides.rubygems.org/specification-reference/ for help
  Successfully built RubyGem
  Name: ruby-opengl
  Version: 0.60.1
  File: ruby-opengl-0.60.1.gem