How to merge a package licensed under BSD 3-Clause

[IshitaTakeshi]

I developed a package that can localize a vehicle using structural features.
I want to merge this one into autoware.universe, but this package is a modification of LIO-SAM, which is distributed under BSD 3-Clause.
So my question is

• Is it possible to merge the entire packages licensed under BSD 3-Clause to autoware.universe?
  • If possible,
    • What care do I need?
    • How should I write the license notice?
  • If not possible,
    • Where can I place this package in Autoware?
    • How can I synchronize the software version and specification with Autoware?

[IshitaTakeshi]

@yukkysaito @mitsudome-r How about this?

[yukkysaito]

@IshitaTakeshi Can you share the discussion result? 🙏

[IshitaTakeshi]

If we apply Apache 2.0 to the package

• We can apply our Apache 2.0 license to the whole package
• We add the original BSD 3-Clause license notice to each file in the package
• We can apply another license (e.g., Apache 2.0) with the derivative author's name in the following conditions
  • Modification to the original file is large
  • The additional license does not conflict with the original license
• It is recommended to add the link to the original package and acknowledgments to README

If we keep using the BSD 3-Clause license

• We can just keep the original license
• We can add the derivative author's name to the author list