Build Eclipse cross-platform with Maven Tycho - cross-platform

I try to compile an Eclipse Indigo RCP application with Maven and Tycho. It works fine if I just build it for one platform but if I try to build it for more the build stops working.
The Problem is that I have platform specific plugins in my product file I want to build. Dependencies like org.eclipse.swt.win32.win32.x86 which are fragment plugins for org.eclipse.swt.
When I add no platform specific fragments to my product the application wouldn't start because there are no platform libraries like org.eclipse.swt.win32.win32.x86.
As Tycho repository we use a clone of the eclipse indigo update site hosted on our own server. It includes the delta-pack.
And when I add all fragments for all platforms the build crashed and maven tell me that the platform filters did not match for the Linux build for example.
Does anyone know how to fix this?
Should I add these platform dependent stuff into my product? I prefer to keep the specific dependencies out of my product, am I right?

It sounds like you have a plug-in based product. In this case you will need to manually edit your .product file and add in platform filters for these plug-ins. Unfortunately the built-in product editor in eclipse does not expose these values. See http://wiki.eclipse.org/Tycho/FAQ#How_to_build_plugin-based_products_with_platform-specific_fragments.3F
For each plugin e.g. org.eclipse.swt.win32.win32.x86 you will need to add something like;
<plugin id="org.eclipse.swt.win32.win32.x86" fragment="true" ws="win32" os="win32" arch="x86"/>
Note, if you use the product editor it will remove these values.
It is better however to use a feature based product. The feature editor permits these fields to be edited.

There is an easier solution I found in the blog: http://blog.sdruskat.net/building-a-cross-platform-feature-based-eclipse-rcp-product-with-tycho-the-umpteenth/
In the parent/master pom.xml,
To use all the plugins from p2, specify the following:
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>${tycho-version}</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>target-platform-configuration</artifactId>
<version>${tycho-version}</version>
<configuration>
<resolver>p2</resolver>
<environments>
<environment>
<os>linux</os>
<ws>gtk</ws>
<arch>x86_64</arch>
</environment>
<environment>
<os>win32</os>
<ws>win32</ws>
<arch>x86_64</arch>
</environment>
</environments>
</configuration>
</plugin>
</plugins>
</build>
My tycho version is 0.21.0

Related

How to add jar Non-osgi jar files as dependency to eclipse plugin?

I am developing an eclipse plugin using tycho build ,It needs some non-osgi jar files as dependency.when I add the dependency in my pom file ,It does not take the dependency during maven build.
So, I have tried to make a osgi bundle which contains all the required dependencies by using the following Plugin.
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>1.4.0</version>
<extensions>true</extensions>
<configuration>
<manifestLocation>META-INF</manifestLocation>
<instructions>
<Bundle-SymbolicName>Osgi-bundle</Bundle-SymbolicName>
<Bundle-Name>Osgi-dependency</Bundle-Name>
<Bundle-Version>1.0.0</Bundle-Version>
<Export-Package>*</Export-Package>
<Private-Package>com.foo.bundle</Private-Package>
<Bundle-Activator>com.foo.bundle.Activator</Bundle-Activator>
<Import-Package>*;resolution:=optional</Import-Package>
<Embed-Dependency>*;scope=compile|runtime;inline=true</Embed-Dependency>
<Embed-Directory>target/dependency</Embed-Directory>
<Embed-StripGroup>true</Embed-StripGroup>
<Embed-Transitive>true</Embed-Transitive>
</instructions>
</configuration>
</plugin>
After that i have provided the dependency of this osgi bundle to the eclipse plugin .But still it does not take the dependency.
I have gone through lot of sites.But I am not able to get the solution for this maven build in continuous integration
But,When I tried creating new plugin project with existing jar and add the osgi bundle and export the plugin .Its work fine. But I am in need to maven continuous builds.
Please provide some solution to add the dependency to eclipse plugin project.
I have solved the problem by creating p2 repository and deployed it in the server.I have created a target definition file and linked it to my plugin project.
We can convert non osgi jars to p2 repository by using the following code.
<build>
<plugins>
<plugin>
<groupId>org.reficio</groupId>
<artifactId>p2-maven-plugin</artifactId>
<version>1.1.2-SNAPSHOT</version>
<executions>
<execution>
<id>default-cli</id>
<configuration>
<artifacts>
<!-- specify your depencies here -->
<!-- groupId:artifactId:version -->
<artifact>
<id>org.slf4j:slf4j-log4j12:1.7.10</id>
</artifact>
</artifacts>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
'
For detailed information this site is very helpfull.
http://www.vogella.com/tutorials/EclipseTycho/article.html#convertjars
One possible option is to download jars into separate folder using maven-dependency-plugin, configure classpath in manifest for OSGi bundle and do not forget to include jars in build.

Creating Eclipse plugins from existing jars in an automated build

I want to make the build process for my Eclipse RCP plugin fully automatic. It has some third-party jar dependencies (available from Maven repositories) which are not distributed as OSGi bundles, and currently I use the "Eclipse plugin from existing JAR archives" wizard to convert them manually. Can PDEBuild or Maven/Tycho (or perhaps some other build system) do it as a step of the build?
Peter Tillemans mentioned the PAX wrap jar command in this post
The Maven bundle plugin from Apache Felix may be worth a look, too.
Maybe the Bundlor tool from SpringSource can handle the creation of osgi bundles from jar, too.
Checkout the p2-maven-plugin developed by me. It's an open-source, community-friendly plugin that handles:
the wrap of the jars that are not OSGi bundles (that's fully customizable)
the generation a fully functional p2-update site that may be consumed in the Eclipse PDE
the generation of the corresponding source bundles (it generates source bundles for all the bundles)
Details and the documentation could be find here: http://projects.reficio.org/p2-maven-plugin/manual.html
Sample usage:
<plugin>
<groupId>org.reficio</groupId>
<artifactId>p2-maven-plugin</artifactId>
<version>1.0.0-SNAPSHOT</version>
<executions>
<execution>
<id>default-cli</id>
<configuration>
<artifacts>
<!-- specify your depencies here -->
<!-- groupId:artifactId:version -->
<artifact><id>commons-io:commons-io:2.1</id></artifact>
<artifact><id>commons-lang:commons-lang:2.4</id></artifact>
<artifact><id>commons-lang:commons-lang:2.5</id></artifact>
<artifact><id>commons-lang:commons-lang:2.6</id></artifact>
<artifact><id>org.apache.commons:commons-lang3:3.1</id></artifact>
</artifacts>
</configuration>
</execution>
</executions>
</plugin>
Take a look on the differences between the thirdparty jar and its bundled equivalence. It's just an additional plugin.xml and a few extra lines in the manifest.
Write your own code for bundling jars.

How to integrate findbugs with maven

Please provide steps to integrate findbugs with maven
Use the Maven Findbugs plugin. See the usage page of the plugin for examples.
FindBugs looks for bugs in Java programs. It is based on the concept of bug patterns in order to integrate with Maven, put the following in your plugins section.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<version>2.0.1</version>
<configuration>
<xmlOutput>true</xmlOutput>
<!– Optional directory to put FindBugs xdoc xml report –>
<xmlOutputDirectory>target/site</xmlOutputDirectory>
<threshold>High</threshold>
</configuration>
</plugin>

How to run jetty:run-war using a war defined by maven coordinates?

Background: I'm setting up a functional tests module in a maven project. We use the maven-jetty-plugin for testing.
I've got the jetty plugin set up as described here (to play nicely with the Failsafe plugin), but what I'd like to do is deploy the war artifact from our main web module using jetty (which has just been installed into the local maven repo by the time the functional test module is running).
The jetty plugin's run-war goal has a <webApp> element which takes a string path to a war to deploy. I'd much rather specify the war to deploy using the maven coordinates defined by our web module. Is there any way to do this?
Possible workarounds:
Section 4.13 of "Better Builds with Maven" describes using cargo to deploy a war specified using maven coordinates, but that's serious overkill given that we're using jetty.
More reasonable IMO is using dependency:copy to copy the just-built-and-installed war artifact to a fixed path in the functional tests module's target directory, which I can then provide in the jetty plugin's <webApp> configuration element.
The jetty plugin's run-war goal has a element which takes a string path to a war to deploy. I'd much rather specify the war to deploy using the maven coordinates defined by our web module. Is there any way to do this?
This is not really the maven jetty plugin is supposed to be used, the plugin deploys the war of the current module, what you want to do is not supported by default.
Section 4.13 of "Better Builds with Maven" describes using cargo to deploy a war specified using maven coordinates,
Yes, Cargo can do this in a clean way.
but that's serious overkill given that we're using jetty.
I don't agree. First, the jetty plugin doesn't support what you want to do out of the box (so it may not be the right tool). Second, serious overkill is highly exaggerated, a misconception actually, especially given that cargo requires very little configuration (zero?) for an embedded Jetty.
More reasonable IMO is using dependency:copy to copy the just-built-and-installed war artifact to a fixed path in the functional tests module's target directory
No offense but your whole question sounds a bit like: I have a hammer, it was fine for a nail, can I use it for a screw given that getting a screw driver seems a serious overkill? To answer this question (which is somehow what you are saying), you can use dependency:copy and get the whole thing working with the maven jetty plugin, but this is a hack (and since you're actually not asking any question, I guess you wanted an opinion on this). Of course the final decision belongs to you :)
Just in case, here is how I would implement this with Cargo:
<dependencies>
<dependency>
<groupId>war group id</groupId>
<artifactId>war artifact id</artifactId>
<type>war</type>
<version>war version</version>
</dependency>
...
</dependencies>
...
<build>
<plugins>
<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<configuration>
<!-- Container configuration -->
<container>
<containerId>jetty6x</containerId>
<type>embedded</type>
</container>
<!-- Configuration to use with the container or the deployer -->
<configuration>
<deployables>
<deployable>
<groupId>war group id</groupId>
<artifactId>war artifact id</artifactId>
<type>war</type>
<properties>
<context>war context</context>
</properties>
</deployable>
</deployables>
</configuration>
<!-- Don't wait, execute the tests after the container is started -->
<wait>false</wait>
</configuration>
<executions>
<execution>
<id>start-container</id>
<phase>pre-integration-test</phase>
<goals>
<goal>start</goal>
</goals>
</execution>
<execution>
<id>stop-container</id>
<phase>post-integration-test</phase>
<goals>
<goal>stop</goal>
</goals>
</execution>
</executions>
</plugin>
...
</plugins>
...
</build>
And I don't think that this can be objectively qualified as a "serious overkill".

Trigger a maven install command from another maven install command

Is there a way to trigger a maven install command from another maven install command?
In other words, I would like to be able to execute a maven install command on a maven project (in eclipse) and I want that this will automatically cause an install command on another maven project.
Is that possible?
The Maven way to "trigger" another build is to define a multi-module build. A parent pom project can specify modules, that will all be built using the standard lifecycle. So running mvn install on the parent would mean that each module is built in turn.
The parent is defined with pom packagin, and would have a modules declaration like this:
<modules>
<module>module-a</module>
<module>module-b</module>
</modules>
Alternatively it is possible to attach additional artifacts to a build so they are deployed alongside the primary artifacts (assuming they've already been packaged, you can use the build-helper-maven-plugin to attach an arbitrary file to your pom, so it will be deployed with the specified classifier. The following configuration will attach the specified file as my-artifact-1.0-extra.jar
<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>/path/to/extra/file.jar</file>
<type>jar</type><!--or specify your required extension-->
<classifier>extra</classifier>
</artifact>
</artifacts>
</configuration>
</execution>
</executions>
</plugin>
As pointed out, the maven way to launch a goal (lets say mvn install) on a set of modules is to organize them as a multi-module project and to launch the goal on the parent pom. Behind the scene, Maven will use a "Maven reactor" for this work. The reactor will calculate the build order by doing a topological sort of the nodes of the directed graph constructed by the dependency relation between modules. This graph is constructed by looking at <modules> and <dependencies> tags in poms.
But launching maven from a parent is not the only option and maven offers more possibilities to play with the reactor (e.g. making a project and its dependencies or those that depend on it):
With maven 2.0.x you have to use the reactor plugin : http://maven.apache.org/plugins/maven-reactor-plugin/ (see Reactor: My New Favourite Maven Plugin too)
With maven 2.1+ you can use native command line options : http://www.sonatype.com/people/2009/03/maven-210-released/ (see the new build mode options -amd, -rf, -am, -pl)
Check it out, it might help you to achieve your goal.