title: AspectJ compiler doesn compile *.aj files
body: <p>I have the following project:</p>
  
  <pre><code>root
     |---pom.xml
  
  src/main/java
     |---com.package
            |----App.java
  
  src/main/aspects
     |---com.package
            |----Trace.aj
  </code></pre>
  
  <p>Now, the pom.xml is</p>
  
  <pre><code>&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;groupId&gt;com.package&lt;/groupId&gt;
      &lt;artifactId&gt;aspectj-test&lt;/artifactId&gt;
      &lt;packaging&gt;jar&lt;/packaging&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
      &lt;name&gt;aspectj-test&lt;/name&gt;
      &lt;url&gt;http://maven.apache.org&lt;/url&gt;
      &lt;dependencies&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.aspectj&lt;/groupId&gt;
              &lt;artifactId&gt;aspectjrt&lt;/artifactId&gt;
              &lt;version&gt;1.8.2&lt;/version&gt;
          &lt;/dependency&gt;
      &lt;/dependencies&gt;
      &lt;build&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
                  &lt;artifactId&gt;aspectj-maven-plugin&lt;/artifactId&gt;
                  &lt;version&gt;1.7&lt;/version&gt;
                  &lt;executions&gt;
                      &lt;execution&gt;
                          &lt;id&gt;compile&lt;/id&gt;
                          &lt;configuration&gt;
                              &lt;ajdtBuildDefFile&gt;build.ajproperties&lt;/ajdtBuildDefFile&gt;
                          &lt;/configuration&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;compile&lt;/goal&gt;
                          &lt;/goals&gt;
                      &lt;/execution&gt;
                  &lt;/executions&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>After executing <code>mvn aspectj:compile</code> I got only the <code>App.class</code> compiled class, but didn't <code>Trace.class</code>. What's wrong with that?</p>