Hi Oleg,

  I thought that we already decided to exclude exotic licenses.

  With respect to this specific license:

  (1) We cannot use the license because the license text is specific to 
eCos (e.g., "eCos is distributed [...]").

  (2) We should not use the license because it is not approved by the 
Open Source Initiative. OSI approval is important for some open source 
funding programmes etc.

  If you want to spend more time on this, I recommend the thread 
in particular 


On Tue, 24 Feb 2015, Oleg Hahm wrote:

> 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."

Matthias Waehlisch
.  Freie Universitaet Berlin, Inst. fuer Informatik, AG CST
.  Takustr. 9, D-14195 Berlin, Germany
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