The current NuttX project at https://bitbucket.org/nuttx/ consists of
five respositories. We will need to understand how each of these
repositories will be handled under Apache.
* nuttx/ This is the operating system. It is only the operating
system. It is complete and usable with no dependency on any other
repsitory
* apps/ This is a optional collection of user-space applications and
libraries that may be used with nuttx/. Most people use at least
parts of the apps/ to create their full embedded application.
The above two repositories are the parts of NuttX that will be included
as Apache NuttX and will be changed to Apache licensing. I think they
would be sub-projects of NuttX. The remaining three repositories are
supporting tool repositories that are essential to supporting and using
NuttX but have GPL licenses and cannot be released under the Apache license:
* buildroot/ derives from the "real" buildroot at
https://buildroot.uclibc.org/ and is used for building (mostly) GPL
tools like GCC cross-compiler, genromfs, and kconfig-frontends for
NuttX.
* tools/ Contains miscellaneous sources for tools and scripts used
with NuttX.
* uClib++ holds and older pre-C++11 C++ library that is tailored to
work with NuttX
There is a more contemporary C++11 library that probably should also be
included in the discussion. It resides at
https://bitbucket.org/acassis/libcxx/src/master/ and is described
here: https://nuttx.org/doku.php?id=wiki:nshhowtos:llvm-stdcxx
These build tools must reside at some location that has close
availability with to the Apache NuttX code. Nothing in these GPL
repositories is ever delivered with the NuttX releases. There are only
references in the documentation to these repositories as steps to
building and installing the operating system. Should these be
maintained completely separately from the Apache NuttX code? Or should
the reside in the Apache NuttX github area? My understanding is that
there is a precedence for including GPL support tools in Apache github
repositories:
* https://www.apache.org/legal/resolved.html#build-tools
* https://www.apache.org/legal/resolved.html#optional
We will need to revisit this in the coming weeks.
Greg
