Why does my Maven build work perfectly fine on the command line but when I run in Eclipse, it requires I add this section to my pom.xml, otherwise I get this error:
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You may require an M2E "connector" to understand maven-compiler-plugin using the Eclipse (JDT) compiler.
Select "discover connectors" and choose M2E connector for Eclipse JDT compiler provided by JBoss, or install it manually.
M2E connector for the Eclipse JDT Compiler 1.0.1.201209200903
You may also be offered a Groovy connector -- maybe it uses similar technology under the hood? -- but unless you are using Groovy, it probably does not make sense to install such integration.