Re: [Sablevm-developer] Obsoleting sablevm-classpath NOW!

[David <db...@cs...>]

Hello,

I really like this idea!
Good work Grzegorz!

I looked quickly at the reorganization and it looks good.

I will test later, probably wait until it gets into staging.

David

On Sun, Mar 21, 2004 at 09:58:38PM -0500, Grzegorz B. Prokopski wrote:
> Hi everybody,
>=20
> Spoiler: this SableVM supports GNU Classpath CVS out-of-the-box
>=20
> 	svn co svn://svn.sablevm.org/developers/gadek/sandbox/svm-cpootb
>=20
> [ Instalation instructions are at the end ]
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> How big hack it is, you'd ask? Well, yes, it is one, but not that big.
> But let me explain from the beginning.
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> =3D=3D=3D=3D Story =3D=3D=3D=3D
>=20
> I discussed with Mark integration of GNU CP and SableVM. As far as I
> could understand his POV, the course will probably be so that each
> VM itself supplied own set of VM* classes. These classes wouldn't need
> to reside in GNU CP tree, so ./vm/reference will move to ./vm.
> (this is still a matter of discussion, I am not stating what will be!)
>=20
> Since some time I was looking at the diff between our classpath and
> upstream besides changes in VM* classes there were mainly thing related
> to ClassLoader, which currently is broken/doesn't exist in GNU CP,
> plus some other stuff that will have to be actually merged, ie. removin=
g
> static initializers (though not too many of such things).
>=20
> 	So I simply integrated VM* classes subtree with sablevm source,
> 	plus added these classes, which we have to have modifed because
> 	of the above reasons. This approach can be seen as
> 	controversial, but IMO there's no reason for SableVM to suffer
> 	just because all CP developers (us including) haven't agreed on
> 	ex. what ClassLoader should look/work like!
>=20
> The list of "classes that should not be there" (there's currently 12!
> of them) is provided and these classes should be eliminated one by one
> as soon as Classpath's code of this classes becomes usable for us. But
> this can be done incrementally and we can work w/ GNU CP CVS now, and
> not at the end of the process.
>=20
> If this or similar idea gets accepted (are you liestening Etienne? ;-)
> we can stop providing our "own" sablevm-classpath tree, but simply
> ship (almost) original classpath 'dist' tarball plus sablevm tarball.
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> Unfortunatelly this doesn't let us forget about merging with GNU CP,
> as merging of changes to the VM* classes will always be needed until
> the interface isn't stabilized. And of course we need to merge changes
> done to these "classes that should not be there" in our tree, but we
> do that already anyway and this too should go away after some time.
>=20
> =3D=3D=3D=3D Rough edges =3D=3D=3D=3D
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> The current code has some "features" you should be aware of.
> 1. Classpath *must* be installed first because jikes needs these
> classes to properly compile VM* classes.
> 2. WARNING: During 'make install' VM* classes from sablevm *overwrite*
> Classpath VM* classes (and the "classes that shouldn't be there"
> overwrite their counterparts).
> 3. I assume you're going to use jikes, no other javac is supported ATM.
>=20
> 1. will probably never go away, and 3. don't seem to be very harmful.
> Ad. 2: this is because currently bootclasspath can NOT contain more tha=
t
> one path. This should go away if we add support like for normal
> classpath values, so that ":" was used as a separator. Put onto
> immediate TODO list *IF* this or similar approach is accepted.
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> =3D=3D=3D=3D Installation instructions =3D=3D=3D=3D
>=20
> 1. get SableVM from the above SVN address.
> 2. get GNU Classpath from CVS http://savannah.gnu.org/cvs/?group_id=3D8=
5
> 3. get easy-classpath-build script by using:
> svn cat svn://svn.sablevm.org/sablevm-classpath/branches/staging \
>  >./build_sablevm-classpath
> chmod +x ./build_sablevm-classpath
> 4. go into GNU Classpath source dir and run=20
> ../svm-cpootb/autogen.sh
> ../build_sablevm-classpath /where/you/want/to/install
> 5. go into SableVM source dir 'svm-cpootb'
> ./autogen.sh && ./configure --prefix=3D/where/you/want/to/install && \
> make && make install
>=20
> Have fun!
>=20
> 				Grzegorz B. Prokopski
>=20
> --=20
> Grzegorz B. Prokopski <ga...@de...>
> Debian GNU/Linux      http://www.debian.org
> SableVM - LGPLed JVM  http://www.sablevm.org
> Why SableVM ?!?       http://devel.sablevm.org/wiki/WhySableVM
>=20
>=20
>=20
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--=20

---

David B=E9langer
Graduate Student
School of Computer Science
McGill University
Office: MC226

Web page:   http://www.cs.mcgill.ca/~dbelan2/
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