Maven compiler warnings and errors in Eclipse

I already asked the opposite question but now I'm growing fond of Maven and would like to set compiler warnings in my pom that are actually mapped to the eclipse project, enabling eclipse to mark "wrong" lines with warnings.

I think(?) Maven already sets the tick to overwrite the default warnings per project, but then just copies the default values into the non default settings. Then it shouldn't be a big hasle for a plugin to e.g. set "Member can be static" to warn?

Which is the write plugin? I can't the the compiler plugin to have any options for this.

Not sure I fully understand your question. For the warnings bit, you can override it using the showWarnings entity in the maven compiler plugin:

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
            <source>1.7</source>
            <target>1.7</target>
            <encoding>${project.build.sourceEncoding}</encoding>
            <showDeprecation>true</showDeprecation>
            <showWarnings>true</showWarnings>
        </configuration>
    </plugin>