Please follow the following Steps to generate Build-ID Automatically form Tycho:
1. In your plugin.xml which have org.eclipse.core.runtime.products Extension add or replace following properties.
<property name="aboutText" value="%productBlurb"/>
2. In same plugin open MANIFEST.MF and add following lines.
Bundle-Localization: plugin
This allows you to use plugin.properties
3. Create or open your plugin.properties and add following add your about dialog as below.
productBlurb=Eclipse Platform\n\
\n\
Version: {1}\n\
Build id: {0}\n\
\n\
(c) Copyright Eclipse contributors and others 2000, 2014. \
..... your thing\n
4. now create a about.mappings file if you already have change it like below.
0=${buildId}
1=${releaseName}
5. now open your pom file and add below settings.
<properties>
<maven.build.timestamp.format>yyyyMMdd-HHmm</maven.build.timestamp.format>
<buildTimestamp>${maven.build.timestamp}</buildTimestamp>
<buildId>${buildTimestamp}</buildId>
<releaseName>5.0.0 RC0</releaseName>
</properties>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<id>process-about.mappings</id>
<phase>prepare-package</phase>
<configuration>
<outputDirectory>${project.build.directory}</outputDirectory>
<overwrite>true</overwrite>
<resources>
<resource>
<directory>${basedir}</directory>
<includes>
<include>about.mappings</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</configuration>
<goals>
<goal>copy-resources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-packaging-plugin</artifactId>
<version>${tycho.version}</version>
<configuration>
<additionalFileSets>
<fileSet>
<directory>${project.build.directory}</directory>
<includes>
<include>about.mappings</include>
</includes>
</fileSet>
</additionalFileSets>
</configuration>
</plugin>
</plugins>
6. run the build now you will get product's about dialog with automatic generated Build-ID.