How to use the same target platform for multiple subprojects in Tycho

Question

Is it possible to use the same .target file for each maven subproject?

Snippet from parent .pom file

<groupId>root.server</groupId> <artifactId>root.server</artifactId> 

A fragment from a .pom file for children

 <groupId>child.project</groupId> <artifactId>child.project.parent</artifactId> <target> <artifact> <groupId>root.server</groupId> <artifactId>root.server</artifactId> <version>${project.version}</version> <classifier>targetfile</classifier> </artifact> </target> 

When I try to run "mvn clean install" in a child project, I get an exception: Could not resolve target platform specification artifact . When I try to run "mvn clean install" on the parent of the child project, everything works fine.

Is there a way to reuse a single .target file for all projects (parent + subprojects)?

Answer 1

This is possible and this is the preferred method.

You must create a child module specifically for your .target file (for example, called the target definition). This should be a project with a pom packaging type. You should also include the following snippet: this is the part that allows other modules to access the .target file:

  <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>build-helper-maven-plugin</artifactId> <version>1.3</version> <executions> <execution> <id>attach-artifacts</id> <phase>package</phase> <goals> <goal>attach-artifact</goal> </goals> <configuration> <artifacts> <artifact> <file>targetFilename.target</file> <type>target</type> <classifier>targetFilename</classifier> </artifact> </artifacts> </configuration> </execution> </executions> </plugin> 

Now in your parent pom you can reference this module in target-platform-configuration , and your child modules will also use it:

 <plugin> <groupId>org.eclipse.tycho</groupId> <artifactId>target-platform-configuration</artifactId> <version>${tycho-version}</version> <configuration> <target> <artifact> <groupId>org.example</groupId> <artifactId>target-definition</artifactId> <version>1.0.0-SNAPSHOT</version> <classifier>targetFilename</classifier> </artifact> </target> </configuration> </plugin> 

There is also a request for creating a packaging type for .target files to help in the future.