Dear RIOTers,

I just found the eCos license: [1]
http://ecos.sourceware.org/license-overview.html

It's basically a modified version of the GPL with linker exception. The
interesting point: it is officially recognised as a GPL-compatible Free
Software License:
https://www.gnu.org/licenses/license-list.html#eCos20
and it seems to enable exactly what most of us want for RIOT: it makes it
possible to implement proprietary applications on top of the OS, but any
changes to the OS have to be made freely available. It seems also possibly to
apply this exception on device drivers if this driver is implemented in a
particular way. A very quick search revealed immediately one commercial user
of this rule:
https://help.eyefi.com/hc/en-us/articles/301754-eCos-Open-Source-License

To me this looks very promising. What do you think?

Cheers,
Oleg

[1] eCos is another "free open source real-time operating system intended for
    embedded applications."
-- 
The problem with TCP jokes is that people keep retelling them slower until you
get them.

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