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From Chip Childers <chip.child...@sungard.com>
Subject Re: [DISCUSS] Supported Java version
Date Mon, 25 Feb 2013 15:00:01 GMT
I didn't think that we agreed to bumping the java version to 7, and it
seems like that might make working with distros / packages difficult.

Adding Alex and Frank to the CC to get their take.

On Mon, Feb 25, 2013 at 12:23:39PM +0100, Wido den Hollander wrote:
> Hi,
> 
> So the last couple of days the master branch wouldn't build on my systems:
> 
> [INFO] Apache CloudStack Framework - IPC ................. FAILURE [1.874s]
> ...
> ...
> [INFO] ------------------------------------------------------------------------
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile
> (default-compile) on project cloud-framework-ipc: Compilation
> failure: Compilation failure:
> [ERROR] /home/employee/wido/repos/cloudstack/framework/ipc/src/org/apache/cloudstack/framework/rpc/RpcServerCallImpl.java:[51,58]
> type parameters of <T>T cannot be determined; no unique maximal
> instance exists for type variable T with upper bounds
> T,java.lang.Object
> [ERROR] /home/employee/wido/repos/cloudstack/framework/ipc/src/org/apache/cloudstack/framework/rpc/RpcClientCallImpl.java:[191,60]
> type parameters of <T>T cannot be determined; no unique maximal
> instance exists for type variable T with upper bounds
> T,java.lang.Object
> 
> So I'm running Ubuntu 12.04.1 on all my systems (laptop, desktop,
> servers) and this is the maven information:
> 
> wido@wido-desktop:~$ mvn -v
> Apache Maven 3.0.4
> Maven home: /usr/share/maven
> Java version: 1.6.0_27, vendor: Sun Microsystems Inc.
> Java home: /usr/lib/jvm/java-6-openjdk-amd64/jre
> Default locale: en_US, platform encoding: UTF-8
> OS name: "linux", version: "3.2.0-38-generic", arch: "amd64", family: "unix"
> wido@wido-desktop:~$
> 
> Now, that Java version is old, I know, but it's the openjdk version
> which is in Ubuntu 12.04's repositories right now.
> 
> I downloaded Java 7:
> 
> wido@wido-desktop:~/repos/cloudstack$ JAVA_HOME="/opt/jdk1.7.0_15" mvn -v
> Apache Maven 3.0.4
> Maven home: /usr/share/maven
> Java version: 1.7.0_15, vendor: Oracle Corporation
> Java home: /opt/jdk1.7.0_15/jre
> Default locale: en_US, platform encoding: UTF-8
> OS name: "linux", version: "3.2.0-38-generic", arch: "amd64", family: "unix"
> wido@wido-desktop:~/repos/cloudstack$
> 
> With that Java version the master branch builds just fine.
> 
> 
> What I want to discuss which version of Java we support.
> 
> I'd say we support the LTS version of any major release of CentOS or Ubuntu.
> 
> I also understand that Java 6 is pretty old, so what do we do?
> 
> Wido
> 

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