How to set an environment variable in maven depending on the OS - linux

Question

I am fairly new to maven. I have setup a pom.xml which defines a profile for running my unit tests. I am trying to set Path environment variable. The env variable name is Path for Windows and LD_LIBRARY_PATH for Linux. I don't want to keep on changing these env. variable names depending on the OS. How should I achieve this?
<profile>
<id>integration-tests</id>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-surefire-plugin</artifactId>
<version>${tychoVersion}</version>
<configuration combine.self="override">
<argLine>${tycho.testArgLine} ${global.test.vmargs} ${bundle.test.vmargs}</argLine>
<forkMode>${bundle.test.forkMode}</forkMode>
<useUIHarness>${bundle.test.useUIHarness}</useUIHarness>
<useUIThread>${bundle.test.useUIThread}</useUIThread>
<environmentVariables>
<!--For windows change LD_LIBRARY_PATH to PATH-->
<LD_LIBRARY_PATH>${dependenciesDir}${path.separator}{env.LD_LIBRARY_PATH}</LD_LIBRARY_PATH>
</environmentVariables>
</configuration>
</plugin>
</plugins>
</build>
</profile>

Answer 1

Profile activation might help here. Remove the <environmentVariables> config from the integration tests profile. Then add the profiles below, tweaking the <activation> sections to meet the specific requirements. You do not need to explicitly enable these profiles on the command line; Maven will activate the right profile based on which system is running the build.
<profile>
<id>windows-tests</id>
<activation>
<os>
<family>Windows</family>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-surefire-plugin</artifactId>
<version>${tychoVersion}</version>
<configuration>
<environmentVariables>
<PATH>${dependenciesDir}${path.separator}{env.PATH}</PATH>
</environmentVariables>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>linux-tests</id>
<activation>
<os>
<family>Linux</family>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-surefire-plugin</artifactId>
<version>${tychoVersion}</version>
<configuration>
<environmentVariables>
<LD_LIBRARY_PATH>${dependenciesDir}${path.separator}{env.LD_LIBRARY_PATH}</LD_LIBRARY_PATH>
</environmentVariables>
</configuration>
</plugin>
</plugins>
</build>
</profile>