[news.eclipse.technology.equinox] How to generate p2 metadata for export

[Ben Vitale <bsv@xxxxxxxxxxx>]

When I run the Export wizard against a .product that has a dependency on 
the org.eclipse.platform feature, I get all the p2 plugins included in 
the export. I'm able to see the Software Updates menu item. But clicking 
on it results in this message:

"Cannot launch the Update UI.  This installation has not been configured 
properly for Software Updates."

There is also this in the log:

!ENTRY org.eclipse.equinox.p2.ui.sdk 2 0 2009-01-07 10:01:12.549
!MESSAGE Could not locate the running profile instance. The 
eclipse.p2.data.area and eclipse.p2.profile properties may not be set 
correctly in this application's config.ini file.

Now I'm noticing that there is in fact no p2 data area in the exported 
product output. I suspect the error I'm seeing is the one referenced in 
this bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=221513

Is there a flag that should be set on the build.properties file to 
trigger the generation of p2 metadata?

Thanks
Ben