Description Tim O'Brien 2011-08-03 11:06:53 EDT

The Java compiler's documentation states that -source and -target accept the following values:

"5" as a synonym for "1.5", "6" as a synonym for "1.6", and (assumption) "7" as a synonym for "1.7".

In the current release of m2eclipse, if your pom.xml contains the configuration:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <configuration>
    <source>6</source>
    <target>6</target>
  </configuration>
</plugin>

m2eclipse will ignore this setting and use a different source and target level.   This will lead to inconsistent results from the same build run via the command-line vs. m2eclipse.   

I've attached a patch for ./src/org/eclipse/m2e/jdt/internal/AbstractJavaProjectConfigurator.java which adds the synonyms to SOURCES and TARGETS and which adds some logic to catch the synonyms for source and taget.