[U-Boot] SPDX License IDs - moving forward

[Masahiro Yamada]

Hello Wolfgang.


> U-Boot is very flexible to configure, and as is it is not trvial to
> tell if a specific piece of code actually gets linked into the final
> product.  I wonder if we should turn the comment as we have it now
> into actual code, i. e. into a preprocessor macro that compiles the
> license ID into the generated object file (probably into a separate
> section so you can decide whether or not you want to include this
> ieven into the final binary image).


Interesting!


Linux Kernel has MODULE_LICENSE macro for device drivers,
for example:

MODULE_LICENSE("Dual BSD/GPL");
MODULE_LICENSE("GPL");

License information is embedded into *.ko file.
Similar idea?

I want the preprocessor macro placed on the top of each file,
if it is used in substituion for SPDX Lincense Identifier.



This idea seems to fit only to C sources.

We should use different approach depending on the type of files. Right?
  macro approach:
      C source file
  comment block:
      makefile, python scripts, shell scripts...


Best Regards
Masahiro Yamada