I'm not an expert, but I'd expect that you could configure the maven compiler
plugin to run the compile goal twice with two different configs.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>java-1.2-compile
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.2</source>
<target>1.2</target>
</configuration>
</execution>
<execution>
<id>java-1.5-compile
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.5</source>
<target>1.5</target>
</configuration>
</execution>
</executions>
</plugin>
of course you'll need to override the output locations, and otherwise try to
get around the "one artifact per project" default of maven.
David
Jochen Wiedmann wrote:
>
> Hi,
>
> I'd like to know suggested solutions for the following scenario:
>
> We have a jar file, which is used in different projects since quite
> some time. One of the projects is so old, that it is still using Java
> 1.2. Other projects are using later Java versions, up to 1.5. The jar
> files development is mainly driven by the newer projects, but from
> time to time we change something in the old sources as well.
>
> In order to use Java 5 features in as many sources as possible, we
> have the following solution: The sources are located in three
> different folders: A, B and C. An ant script is compiling A and B with
> the 1.2 compiler and builds a jar file foo-jdk1.2-<version>.jar.
> Likewise, the 1.5 compiler compiles A and C into foo-jdk1.5-<version>.
> This has worked fairly well for us.
>
> I would now like to switch the project to Maven 2. A possible approach
> would be to have a parent project with three subprojects: A, B and C.
> But that won't work too well, because we have cyclic dependencies
> between A and B, or A and C. Besides, I am not too happy with that,
> because it makes the build fairly complex.
>
> Does anyone have an idea that would allow us to keep the sources in a
> single project, but run the Java compiler twice and still create
> multiple deliverables?
>
> Thanks,
>
> Jochen
>
> --
> How fast can a year go? As fast as your childs first year.
>
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