On Wed, Jun 13, 2012 at 10:53:08AM -0400, James Carman wrote: > 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.)
I don't deny that such a tool is useful, but my purpose is not continuous integration; just, at some point in time, be able to compile and run the tests with different JDK versions/vendors (and expecting the same output). Best regards, Gilles > > 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
