Example SmartGWT 4.1 & GWT 2.8 Maven build

module.gwt.xml

<?xml version="1.0" encoding="UTF-8"?>
<module rename-to='app'>

	<!-- Inherit the core Web Toolkit stuff. -->
	<inherits name='com.google.gwt.user.User' />
  
	<!-- Inherit debug extensions. Required. -->
	<inherits name="com.google.gwt.user.Debug"/>
	<inherits name="com.google.gwt.logging.Logging"/>

	<!-- enables SDM -->
	<add-linker name="xsiframe"/>
  
	<!-- Whitelist DevMode to dev server -->
	<set-configuration-property name="devModeUrlWhitelistRegexp" value="http://(localhost|www\.xxx\.yyy\.zzz)(:\d+)?/.*" /> 

	<!-- Fixing warning about the doc type: See http://forums.smartclient.com/showthread.php?t=20292 -->
	<extend-configuration-property name="document.compatMode" value="BackCompat" />

	<!-- Configure Logging -->
	<set-property name="gwt.logging.logLevel" value="FINEST"/>          	# To change the default logLevel
	<set-property name="gwt.logging.enabled" value="TRUE"/>             	# To enable logging
	<set-property name="gwt.logging.consoleHandler" value="ENABLED"/>  		# To enable console handler

	<!-- Enable the use of symbol maps -->
	<set-property name="compiler.stackMode" value="emulated" />
	<set-property name="compiler.useSourceMaps" value="true"/>
	<set-configuration-property name="compiler.emulatedStack.recordFileNames" value="true" />
	<set-configuration-property name="compiler.emulatedStack.recordLineNumbers"	value="true" />

	<!-- Set Safari/Chrome Browser Only -->
	<set-property name="user.agent" value="safari,gecko1_8"/>

	<!-- Specify English only -->
	<extend-property name='locale' values='en'/>

	<!-- Other SmartGWT inherits -->
	<inherits name="com.smartgwtee.SmartGwtEENoScript"/>
	<inherits name="com.smartgwt.DrawingNoScript"/>
	<inherits name="com.smartgwt.ChartsNoScript"/>
	<inherits name="com.smartgwt.tools.SmartGwtTools"/>
	<inherits name="com.smartclient.theme.graphite.GraphiteResources"/>
	<inherits name="com.smartclient.theme.enterpriseblue.EnterpriseBlueResources"/>
	<inherits name="com.smartclient.theme.enterprise.EnterpriseResources"/>

	<!-- Specify the app entry point class. -->
	<entry-point class='yourproject.client.DesignerEntryPoint' />

	<!-- Specify the paths for translatable code -->
	<source path='client' />
	<source path='shared' />
	<public path='public' />

</module>

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>

    <artifactId>yourproject</artifactId>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <gwt.mojoplugin.version>2.8.0-rc3</gwt.mojoplugin.version>
        <smartgwt.version>4.1-p20160927</smartgwt.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.google.gwt</groupId>
                <artifactId>gwt</artifactId>
                <version>${gwt.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <!-- GWT -->
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-user</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-dev</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- Used with Super Dev Mode -->
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-codeserver</artifactId>
            <scope>provided</scope>
        </dependency>

        <!-- GWT Servlet - When Using RPC -->
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-servlet</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>com.isomorphic.smartgwt.pro</groupId>
            <artifactId>smartgwt-pro</artifactId>
            <version>${smartgwt.version}</version>
        </dependency>

        <!-- Server Side Dependencies -->
        <!-- YOUR CODE DEPENDENCES GO HERE -->
  
     </dependencies>


    <build>
        <resources>
            <resource>
                <directory>${basedir}/src/main/java</directory>
                <includes>
                    <include>**/*.class</include>
                </includes>
            </resource>
            <resource>
                <directory>${basedir}/src/main/resources</directory>
            </resource>
        </resources>
        <plugins>
            <!-- INITIALIZE:  Clean Target -->
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <id>auto-clean</id>
                        <phase>initialize</phase>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            
            <!-- COMPILE:    Compile GWT -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>gwt-maven-plugin</artifactId>
                <version>${gwt.version}</version>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                            <goal>generateAsync</goal>
                            <goal>test</goal>
                        </goals>
                        <configuration>
                            <module>yourproject.module</module>
                            <localWorkers>1</localWorkers>
                            <extraJvmArgs>-Xmx2048m</extraJvmArgs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!-- COMPILE:    Compile Classes -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <compilerArgs>
                        <arg>-Xlint:unchecked</arg>
                    </compilerArgs>
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                    <outputDirectory>${project.build.directory}/${project.build.finalName}</outputDirectory>
                </configuration>
            </plugin>

            <!--PREPARE-PACKAGE: Copy Webapp Resources -->
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.0.2</version>
                <executions>
                    <execution>
                        <id>copy-web-resources</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/${project.build.finalName}</outputDirectory>
                            <resources>
                                <resource>
                                    <directory>${project.build.sourceDirectory}/../webapp</directory>
                                    <includes>
                                        <include>**</include>
                                    </includes>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!--PREPARE-PACKAGE: Copy Main Resources -->
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.0.2</version>
                <executions>
                    <execution>
                        <id>resources</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
                            <resources>
                                <resource>
                                    <directory>${project.build.sourceDirectory}/../resources</directory>
                                    <includes>
                                        <include>**</include>
                                    </includes>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!-- PACKAGE:  Create Jar -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.0.2</version>
                <executions>
                    <execution>
                        <id>default-jar</id>
                        <phase>package</phase>
                    </execution>
                </executions>
                <configuration>
                    <classesDirectory>${project.build.directory}/${project.build.finalName}</classesDirectory>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>