I agree with James, Jenkins is a great choice for such tasks. That's what I do when I want to test a project with a different JVM, but have no time to set up Jenkins jobs.
$ export JAVA_HOME=/opt/java/ibm... $ mvn clean test install Just my 0.02 cents :-) Cheers Bruno P. Kinoshita http://kinoshita.eti.br http://tupilabs.com ----- Original Message ----- > From: James Carman <ja...@carmanconsulting.com> > To: Commons Developers List <dev@commons.apache.org> > Cc: > Sent: Wednesday, 13 June 2012 11:53 AM > Subject: Re: [Math] How to select a specific JDK ? > > You'd be better off using something like Jenkins for this. You could > set up different jobs to run your builds under different conditions > (windoze vs. linux, jdk7 vs. jdk6, etc.) > > > On Wed, Jun 13, 2012 at 10:47 AM, Gilles Sadowski > <gil...@harfang.homelinux.org> wrote: >> On Wed, Jun 13, 2012 at 03:05:13PM +0200, Xavier Detant wrote: >>> The byte code generated by the compiler is totally independent from the > JVM >>> that will be used to run it. >> >> Totally independent? Compiling with 1.7 and running with 1.6 will raise > this >> error: >> Unsupported major.minor version 51.0 >> >>> So I think the point is not «How to compile >>> using the right JDK?» but «How to run with using the right JVM?» Am I >>> wrong? >> >> It is both: compiling _and_ running the tests. >> >> I should be able to do all combinations, i.e.: >> 1. Compile with javac 1.6 and run with java 1.6 >> 2. Compile with javac 1.7 and run with java 1.7 >> 3. Compile with javac 1.6 and run with java 1.7 >> (and similarly with s/6/5/) >> >>> If so, this can't be done at compile time, so it can't be done > via >>> maven, unless you use antrun maven's plugin to create a ant task to > launch >>> your program. >> >> The point is to compile and then _run_ the unit tests, assuming that the >> code conforms to the syntax of Java 5, Java 6, and Java 7, respectively. >> >> In particular, if some source code is Java 5, it should be compatible with >> more recent versions of the Java language, thus be compilable with more >> recent implementations of javac. >> The ultimate goal is to check that the unit tests pass independently of the >> javac and java versions. >> >> >> Best regards, >> Gilles >> >>> >>> 2012/6/13 Gilles Sadowski <gil...@harfang.homelinux.org> >>> >>> > Hello. >>> > >>> > > >>> > > 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. >>> > >>> > I had seen that, but that cannot be the whole story (unless there > is some >>> > maven magic involved); indeed, how can maven differentiate >>> > java-6-openjdk-amd64 >>> > from >>> > java-6-sun >>> > (since both are Java 1.6)? >>> > >>> > I was thinking that there should be some environment variable(s) > whose >>> > setting would somehow activate the above configuration. >>> > >>> > >>> > Regards, >>> > Gilles >>> > >>> > > >>> > > >>> > > 2012/6/13 Gilles Sadowski > <gil...@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 >>> > > > > <gil...@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 >>> > > > > > >>> > > > >>> > > > > --------------------------------------------------------------------- >>> > > > To unsubscribe, e-mail: > dev-unsubscr...@commons.apache.org >>> > > > For additional commands, e-mail: > dev-h...@commons.apache.org >>> > > > >>> > > > >>> > > >>> > > >>> > > -- >>> > > Xavier DETANT >>> > >>> > > --------------------------------------------------------------------- >>> > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org >>> > For additional commands, e-mail: dev-h...@commons.apache.org >>> > >>> > >>> >>> >>> -- >>> Xavier DETANT >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org >> For additional commands, e-mail: dev-h...@commons.apache.org >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
