Tuesday, September 23, 2014

Plugin execution not covered by lifecycle configuration

Eclipse is showing this error

Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-jar-plugin:2.4:jar (execution: make-jar, phase: compile)

It shows the error against the <execution> line in one of our POMs, an extract of which is below.

<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
          <!-- Create shared ViewController JAR file which is used by MYPROJECT-API-V1 -->

I only notice this error in Ecliipse Luna - it was not showing in Eclipse Kepler. Further, I can still build OK from the command line and even Eclipse still builds the project.

The fix was surprisingly easy. I select the quick fix: Discover new m2e connectors. Nothing came up, but when I clicked on FINISH, I found that Eclipse was indeed updating the m2e Connectors. I let it happen, re-started Eclipse, and the error disappeared.