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From Xavier Detant <xavier.det...@gmail.com>
Subject Re: [Math] How to select a specific JDK ?
Date Wed, 13 Jun 2012 12:14:27 GMT
Hi,

With maven, you can configure the compiler to compile in the version you
want.

Add this to the pom.xml and set the arguments as you which.

<build>
        <pluginManagement>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>2.4</version>
                    <configuration>
                        <encoding>UTF-8</encoding>
                        <source>1.6</source>
                        <target>1.6</target>
                        <compilerArguments>
                            <Xlint:-unchecked />
                        </compilerArguments>
                    </configuration>
                </plugin>

See http://maven.apache.org/plugins/maven-compiler-plugin/ for more
informations.


2012/6/13 Gilles Sadowski <gilles@harfang.homelinux.org>

> On Wed, Jun 13, 2012 at 12:48:31PM +0200, Jochen Wiedmann wrote:
> > Yes, that switch is called PATH (environment variable).
>
> Do you mean that I should change the PATH variable just to build Commons
> Math?
> I surely hope that there is a more flexible way.
>
> With "ant", all that's needed is to define JAVA_HOME (another environment
> variable, but specific to the task at hand).
>
> > On Wed, Jun 13, 2012 at 12:19 PM, Gilles Sadowski
> > <gilles@harfang.homelinux.org> wrote:
> > > Hello.
> > >
> > > Are there command-line switches that will select a specific JDK?
> > > I.e. I have several of them installed:
> > >
> > > $ ls -l /usr/lib/jvm
> > > total 36
> > > lrwxrwxrwx  1 root root   24 Dec 17 11:04 default-java ->
> java-1.6.0-openjdk-amd64
> > > lrwxrwxrwx  1 root root   18 Jan  5 18:27 java-1.5.0-gcj ->
> java-1.5.0-gcj-4.6
> > > drwxr-xr-x  6 root root 4096 Jan 18 15:04 java-1.5.0-gcj-4.4
> > > drwxr-xr-x  6 root root 4096 Mar  7 17:33 java-1.5.0-gcj-4.6
> > > lrwxrwxrwx  1 root root   23 Aug 11  2010 java-1.5.0-sun ->
> java-1.5.0-sun-1.5.0.22
> > > drwxr-xr-x 10 root root 4096 Aug 11  2010 java-1.5.0-sun-1.5.0.22
> > > lrwxrwxrwx  1 root root   20 Dec 16 18:51 java-1.6.0-openjdk-amd64 ->
> java-6-openjdk-amd64
> > > lrwxrwxrwx  1 root root   20 May  3 14:00 java-1.7.0-openjdk-amd64 ->
> java-7-openjdk-amd64
> > > drwxr-xr-x  3 root root 4096 Jan 18 15:38 java-6-openjdk
> > > drwxr-xr-x  7 root root 4096 Mar  7 17:29 java-6-openjdk-amd64
> > > drwxr-xr-x  3 root root 4096 Jan 18 15:38 java-6-openjdk-common
> > > lrwxrwxrwx  1 root root   19 Jun  9  2011 java-6-sun ->
> java-6-sun-1.6.0.26
> > > drwxr-xr-x  8 root root 4096 Jan 18 15:47 java-6-sun-1.6.0.26
> > > drwxr-xr-x  7 root root 4096 Jun  5 17:12 java-7-openjdk-amd64
> > > drwxr-xr-x  3 root root 4096 Jun  5 17:12 java-7-openjdk-common
> > > lrwxrwxrwx  1 root root   12 Jan  5 18:27 java-gcj -> java-gcj-4.6
> > > lrwxrwxrwx  1 root root   18 Apr 29  2010 java-gcj-4.4 ->
> java-1.5.0-gcj-4.4
> > > lrwxrwxrwx  1 root root   18 Nov 14  2011 java-gcj-4.6 ->
> java-1.5.0-gcj-4.6
> > >
> > > and I'd like to be able to say something like
> > >  -D...=/usr/lib/jvm/java-7-openjdk-amd64
> > > so that maven will use the corresponding compiler and JVM.
> > >
> > > Does the default configuration already cares for this? If so, which
> are the
> > > command-lins options?
> > >
> > > If not, I guess that this should be defined in a "profile" in
> > > "settings.xml". If so, could someone post such a profile?
> > >
> > >
> > > Thanks,
> > > Gilles
> > >
>
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-- 
Xavier DETANT

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