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Re: [dsdp-mtj-dev] Initial contributions on MTJ reboot
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Comments below...
Paula Gustavo-WGP010 wrote:
hi mtj,
mtj was official rebooted last week and the committers have being
added to the project :D.
we are still working on update the website and the wiki with a new
proposed planning. during eclipscon we will have an specific MTJ BOF
to get feedback on the proposed planning from the community
(_http://www.eclipsecon.org/2008/?page=sub/&id=506_
<http://www.eclipsecon.org/2008/?page=sub/&id=506>). if you are
attending the conference, your opinion will be very important during
the BOF discussions.
now we need to talk about how to go on with the project.
based on the initial proposed plan that we sent to list on january,
the first step will be to contribute eclipseme contribution to mtj. we
talk with janet and we are ok to use parallel ip process on mtj.
eclipseme was already used on mtj, but we need to re-submit the new
version of it.
there are a couple of points that we need to address to contribute
eclipseme
1 - which version should we take?
2 - who has the copyright of eclipseme code?
3 - which external packs are used inside of it? which license they
have and who hold the copyright?
about item 1:
craig,
do you think we can go with version 1.7.7 and then apply the updated
on it? i remember that you mentioned that you are working on a new
version of it, but do you think it is possible that we just apply your
updates on top of 1.7.7?
I think I should probably do a 1.7.8 release and get those changes in
that are sitting on EclipseME trunk. There are enough worthwhile changes
in there to get it in. Those changes are all mine, so I don't know how
much they would affect legal approval. Can someone give me a specific
"due date" and I can work to get 1.7.8 by that date? I can attempt to
get it together this weekend...
about item 2:
i looked at the code and it seems to me that there are only two
copyright owners:
- Kevin Hunter (signing solution)
- Craig Setera (rest of the code)
craig, can you confirm that?
We went through a long discussion about this during the initial MTJ
project code. I can likely dig out all of those old emails, but I'm
wondering if we can get this information from Eclipse legal and apply
deltas to the last release that was cleared by legal? I've been very
careful since the MTJ project was started to track all changes against
Sourceforge bugs and any changes from others would be documented in
those bug reports and referred to by the change log in EclipseME. Kevin
and I are definitely the primary contributors.
about item 3:
i did an initial analysis of the code and below is a list of the
packages, owners and licenses that i found
- antenna (Omry Yadan): EPL / LGPL
- Truezip (Christian Schlichtherle); Apache
- ObjectWeb ASM – bytecode manipulation (INRIA, France Telecom): open
source?
- Jetty – HTTP Server (mortbay.org) – Apache (already used on MTJ)
craig,
do you anticipate any possible problems with any of those packages?
i'm not sure if we can use antenna
are all of them really used? it seems to the ObjectWeb ASM is used on
eclipseme preverifier impl that you mention that is not being used. i
also could not find any reference in the code to the truezip component.
As you guessed, ASM is currently used primarily for the built-in
preverifier which *is* still in use at the moment. My goal has been to
remove that and replace it with Proguard. I also have tooling code on
trunk to generate "empty" skeleton API jars that uses ASM to do the
generation. In theory, that could be removed or rewritten, but I intend
to provide usable API jars in EclipseME 1.7.8 based on this code. Longer
term the project will need the ability to generate skeleton API jars
that can be used for preverification and emulators that don't otherwise
provide some of these libraries (microemulator, mpowerplayer, me4se)
Truezip is buried in the JAR builder to improve performance of
incremental builds directly to a deployable JAR file. It is definitely
very tied in.
In terms of Antenna, EclipseME only uses the EPL portion of the library.
I'm sure that if we ask, Omry would consider producing a build for MTJ
that only includes the EPL licensed preprocessing code. Without that, we
would need to drop the preprocessor support.
Hope that helps,
Craig
