Maven 2 plugin fails with cannot find symbol exception when defining two locations for source files

Symptoms

 
           [INFO] ------------------------------------------------------------------------ 
          
           [ERROR] BUILD FAILURE 
          
           [INFO] ------------------------------------------------------------------------ 
          
           [INFO] Compilation failure 
          
           C:\source\location\target\clover\src-test\com\atlassian\fisheye\ 
           package 
           \someclass.java:[ 
           11 
           , 
           35 
           ] cannot find symbol 
          
           symbol:  
           class 
           ACLASSNAME

You have a maven project that compiles and installs just fine, but when run with the clover goals on it fails with the above error. The project is set up a little bit different, as the source is in two folders, src/main/java/core, and src/main/java/gen. The maven compiler plugin is configured to handle this as below:

 
           <plugin> 
          
           <groupId>org.apache.maven.plugins</groupId> 
          
           <artifactId>maven-compiler-plugin</artifactId> 
          
           <configuration> 
          
           <includes> 
          
           <include>core/**</include> 
          
           <include>gen/**</include> 
          
           </includes> 
          
           <source> 
           1.5 
           </source> 
          
           <target> 
           1.5 
           </target> 
          
           </configuration> 
          
           </plugin>

Cause

Clover does not understand the above definition.

Resolution

The maven best practice is to use the build-helper-maven-plugin to add alternate source directories, instead of using <includes> in the maven-compiler-plugin.

Please remove the <includes> from the compiler plugin and add the following plugin definition to your build.xml:

 
           <plugin> 
          
           <groupId>org.codehaus.mojo</groupId> 
          
           <artifactId>build-helper-maven-plugin</artifactId> 
          
           <version> 
           1.1 
           </version> 
          
           <executions> 
          
           <execution> 
          
           <id>add-source</id> 
          
           <phase>generate-sources</phase> 
          
           <goals> 
          
           <goal>add-source</goal> 
          
           </goals> 
          
           <configuration> 
          
           <sources> 
          
           <source>src/java/core</source> 
          
           <source>src/java/gen</source> 
          
           </sources> 
          
           </configuration> 
          
           </execution> 
          
           </executions> 
          
           </plugin>