Small fix to the exec config.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-cpp/trunk@781769 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/activemq-cpp/pom.xml b/activemq-cpp/pom.xml
index 7fad02b..f55b377 100644
--- a/activemq-cpp/pom.xml
+++ b/activemq-cpp/pom.xml
@@ -264,7 +264,7 @@
               </execution>
             </executions>
             <configuration>
-              <executable>build.sh</executable>
+              <executable>${basedir}/build.sh</executable>
               <workingDirectory>${basedir}</workingDirectory>
             </configuration>
           </plugin>