From mboxrd@z Thu Jan  1 00:00:00 1970
From: alexandre.montplaisir@polymtl.ca (Alexandre Montplaisir)
Date: Fri, 10 Sep 2010 16:09:50 -0400
Subject: [ltt-dev] Packages in the Ubuntu LTTng PPA
In-Reply-To: <4C8A89C2.6030800@ericsson.com>
References: <4C86AA0B.3010603@polymtl.ca> <4C870DF9.9050301@polymtl.ca>
	<4C8A89C2.6030800@ericsson.com>
Message-ID: <4C8A908E.8070904@polymtl.ca>

  I personally had problems with Eclipse running on OpenJDK, but as far 
as jni.h goes, it seems to build just fine with it, or even with gcj-jdk.

More than that, while doing tests earlier this week I noticed 
compilation warnings along the lines of "JDK rejected by preprocessor 
but accepted by compiler, going with compiler's decision.", which I 
don't remember having seen before. Not very reassuring.
However, those happened when linking against BOTH sun-java6 or openjdk-6 
but NOT with gcj-jdk. So my guess is that I have been building the JNI 
interface with gcj-jdk all along.

So the liblttvtraceread-jni package in the PPA right now builds with 
gcj-jdk, and I haven't noticed any problems so far. Yes, 
liblttvtraceread-jni, it's there, although I don't recommend using it 
right now, it still has the marker_field bug in it. Wait for version 
~lttng6 or for a new upstream version.

Cheers,
Alexandre


On 10-09-10 03:40 PM, Matthew Khouzam wrote:
> I have never used sun's java on TMF, I understand it is what we 
> support officially, but since OpenJDK and sun are 95% similar (same 
> code) I doubt this is an issue. I would personnaly worry about it if 
> you encounter a bug.
>
> PS. Having ltt in a PPA is awesome.
>
> On 10-09-08 12:15 AM, Alexandre Montplaisir wrote:
>> Yikes, I lied about that. TMF also requires the liblttvtraceread_loader
>> to provide the JNI interface, which requires building against
>> sun-java6-jdk. Afaik, it's impossible to link against Sun's Java in
>> Launchpad, only OpenJDK (or GCJ).
>>
>> I'm afraid we can't provide the JNI loader in the PPA then, unless we
>> want to port/support the loader with OpenJDK.
>>
>
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