src/it/projects/detectLinks/pom.xml

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<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.apache.maven.plugins.maven-javadoc-plugin.it</groupId>
  <artifactId>linkoffline-test-parent</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>MJAVADOC-97</name>
  <description>detectLinks=true</description>
  <url>http://myhost/parent</url>

  <modules>
    <module>module1</module>
    <module>module2</module>
  </modules>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>@maven.compiler.source@</maven.compiler.source>
    <maven.compiler.target>@maven.compiler.target@</maven.compiler.target>
  </properties>

  <dependencies>
    <!-- known apidocs link -->
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.1</version>
    </dependency>
    <!-- unknown apidocs link -->
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-script</artifactId>
      <version>2.2.1</version>
      <type>pom</type>
    </dependency>
  </dependencies>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-javadoc-plugin</artifactId>
          <version>@pom.version@</version>
        </plugin>
      </plugins>
    </pluginManagement>

    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <configuration>
          <detectLinks>true</detectLinks>
          <debug>true</debug>
          <!--
            The Javadoc link to a class in module2 on which module1 does not depend on creates an error with
            Oracle JDK 8, but just a warning with Oracle JDK 7 or OpenJDK 8 ==> setting failOnError to false
          -->
          <failOnError>false</failOnError>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>