Re: Using a workspace-based VM in Eclipse

[Raif S. Naffah]

On Friday 23 December 2005 06:34, Tom Tromey wrote:
> I've checked in the Eclipse jar builder to Classpath head, and now my
> fakejdk project is available.  This means you can easily start
> playing with an in-workspace VM in Eclipse.
>
> To do this, follow the wiki instructions to check out and build
> Classpath and Cacao (as always, this VM is chosen because all the
> needed build bits are in its cvs repository... hint to the other VM
> developers).
>
> Once that is done, check out the fakejdk project from
>
> :pserver:address@hidden:/cvs/rhug, module 'fakejdk'.
>
> (This ought to auto-build, but if not, apply the usual Clean hack.)
> This just makes a little project consisting of symlinks -- it is a
> huge hack.
>
> Now, go to Window->Preferences->Java->Installed JREs and choose
> 'Add...' to add a new one.  I named mine "Cacao".  For the JRE home
> directory, choose $workspace/fakejdk.  Then turn off "Use default
> system libraries" and you can edit the Source attachment of the new
> JRE to point to the classpath directory in the workspace.

when i do that Eclipse claims that "Target is not a JDK root. System 
library was not found."

this turns out to be caused by the fact that the instructions to follow 
do not cause a glibj.zip to be generated, and hence be used as the fake 
rt.jar.


> Once this is done you can pick this JRE for launchers, or to build
> other projects against.  This is nice because it means these projects
> don't have to necessarily depend on Classpath -- there is a layer of
> indirection, so you can build and run them against the system VM if
> you prefer to do that, without modifying the shared build setup.
>
> Tom


cheers;
rsn

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