Build element of a flexmojos maven poom to use conditionnal compilation and produce both elements

pom.xml

	<build>
		<plugins>
			<plugin>
				<groupId>org.sonatype.flexmojos</groupId>
				<artifactId>flexmojos-maven-plugin</artifactId>
				<extensions>true</extensions>
				<configuration>
					<resourceBundlePath>${basedir}/src/main/locale/{locale}</resourceBundlePath>
					<compiledLocales>
						<locale>en_US</locale>
						<locale>fr_FR</locale>
					</compiledLocales>
					<themes>
						<theme>${project.build.directory}/themes/halo-theme.swc</theme>
						<theme>${project.build.directory}/themes/spark.swc</theme>
					</themes>
				</configuration>
				<executions>
					<execution>
						<!-- standard SWC compile is disabled to let some room for classifiers -->
						<id>default-compile-swc</id>
						<phase>none</phase>
					</execution>
					<execution>
						<id>Flex</id>
						<phase>compile</phase>
						<goals>
							<goal>compile-swc</goal>
						</goals>
						<configuration>
							<definesDeclaration>
								<property>
									<name>CONFIG::AIR</name>
									<value>false</value>
								</property>
								<property>
									<name>CONFIG::FLEX</name>
									<value>true</value>
								</property>
							</definesDeclaration>
							<classifier>flex</classifier>
						</configuration>
					</execution>
					<execution>
						<id>AIR</id>
						<phase>compile</phase>
						<goals>
							<goal>compile-swc</goal>
						</goals>
						<configuration>
							<definesDeclaration>
								<property>
									<name>CONFIG::AIR</name>
									<value>true</value>
								</property>
								<property>
									<name>CONFIG::FLEX</name>
									<value>false</value>
								</property>
							</definesDeclaration>
							<classifier>air</classifier>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>