Sebb created MPOM-44:
------------------------
Summary: Compiler version settings cannot be overridden by
defining maven.compiler.source/target
Key: MPOM-44
URL: https://issues.apache.org/jira/browse/MPOM-44
Project: Maven POMs
Issue Type: Bug
Components: maven-plugins
Affects Versions: ASF-13
Reporter: Sebb
The compiler plugin by default picks up the source and target from the
properties
maven.compiler.source and maven.compiler.target.
Unfortunately, the Apache POM uses the following fixed values to specify the
version:
{code}
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.4</source>
<target>1.4</target>
</configuration>
{code}
This means that child poms which use the properties expecting them to be
honoured have to override the configuration as follows:
{code}
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${maven.compile.source}</source>
<target>${maven.compile.target}</target>
</configuration>
</plugin>
{code}
This is unnecessary and wrong.
For compatibility, the Apache Pom does need to still specify the default
source/target as 1.4 (the plugin default is 1.5), but it should do so by using
the standard properties which can then be overridden.
In fact, if the properties are defined, the compiler plugin config could be
dropped, as it is the default behaviour.
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