Question

I am upgrading my project from GWT 2.3.0 to 2.4.0. As a side affect, my GWT compilation fails because it runs out of memory. I searched online and found that you can specify additional memory parameters inside of the Maven pom.xml file (by adding a configuration block) like this:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>gwt-maven-plugin</artifactId>
    <version>2.4.0</version>
    <executions>
        <execution>
            <goals>
                <goal>compile</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <extraJvmArgs>-XX:MaxPermSize=512m -Xmx1024m</extraJvmArgs>
    </configuration>
</plugin>

This works if I build directly with Maven, but when I build with IntelliJ, it still runs out of memory. When I view the process details on my OS while IntelliJ is compiling, it is still using -Xmx128m as a flag passed to the JVM.

How can I configure the max memory that the plugin can use inside of IntelliJ?

Answer 1

IntelliJ’s GWT plugin will do the build using its own settings and won’t use the ones in the Maven plugin.

You need to go to the projects settings (see http://www.jetbrains.com/idea/webhelp/gwt-facet.html)

You can increase your ‘Compiler Maximum Heap’ there.