[OpenJDK 2D-Dev] <AWT Dev> [PATCH FOR APPROVAL]: Fix broken build on newer versions of X11 (libXext >= 1.1.0)

Phil Race Phil.Race at Sun.COM
Tue Nov 3 21:18:26 UTC 2009

Andrew John Hughes wrote:
> 2009/11/3 Phil Race <Phil.Race at sun.com>:
>> awt_Graphics and XShm is more for 2D than AWT, but
>> I'm not sure how much it matters for this small change.
> It's called awt_Graphics hence the AWT list.  I doubt the distinction
> between 2d and awt classes is clear to anyone outside Sun.

But Graphics is I'd hope obviously 2D, and lots of things
have AWT in the name as hangovers from JDk 1.0, 1.1, where
there was no 2D.

>> Attach the patch to a bugzilla report .. someone will
>> need to generate a sun bug id too. Can you post a zip
>> of the webvrev somewhere?
> I'm aware we need a Sun bug ID; that's why I asked for one to be
> allocated in the e-mail.  I have commit rights so I don't need
> mentoring; I just need a review and a bug ID so I can push the fix.  I
> don't see why you need all this other superfluous stuff, as it wasn't
> needed for any of my other pushes to various repos.

The superfluous stuff is the copy of the webrev?
We archive them. Not all groups do that. Swing, AWT and 2D do.
Occasionally someone may fail to get one from a contribution
but its still the theoretical process to have it.

> Is the patch ok?  If so, could you please allocate it a bug ID.

I overlooked that in your email. But I already asked Jennifer to allocate one.

>> And is there an X11 reference you can cite to this apparent
>> source incompatible change there?
> There's http://lists.x.org/archives/xorg-devel/2009-June/001242.html
> but I avoided posting this in the original mail because it seems to
> have changed again between that commit and the final release,
> presumably due to compatibility issues (XShm.h is back and it's now
> shmproto.h as seen in the patch).  I've built the repo with this patch
> here with the old version, and others have built it with the new
> version; it does work for both.  The same patch is already in Gentoo's
> ebuild and IcedTea, and a similar patch has been used for the Fedora
> rawhide RPMs for some time.  It would be good to get it upstream as
> well.

OK .. although I was looking for something where they pointed out
this was likely to cause build failures but was justified because ...


>> -phil.
>> Andrew John Hughes wrote:
>>> With the new version of X11 (specifically libXext >= 1.1), the XShm.h
>>> header has been refactored.
>>> As a result, the build fails on awt_GraphicsEnv.c.  This simple patch:
>>> http://cr.openjdk.java.net/~andrew/xshm/webrev.01
>>> fixes the issue, without affecting older versions.  It's trivial, but
>>> very important; this new X11 is already in Gentoo, it'll be in F12
>>> (where we first discovered this issue), and it's no doubt heading to
>>> an Ubuntu near you soon.
>>> The patch was contributed by Diego Pettenò <flameeyes at gmail.com>, who
>>> I'm informed has signed the SCA.
>>> Does this look ok? If so, can I have a bug ID to push this to the
>>> awt-gate (or wherever is appropriate)?
>>> Thanks,

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