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[MCOMPILER-534] Document conditional setting of the --release property #187

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[MCOMPILER-534] Document conditional setting of the --release property #187

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26 changes: 26 additions & 0 deletions src/site/apt/examples/set-compiler-release.apt.vm
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Original file line number Diff line number Diff line change
Expand Up @@ -80,3 +80,29 @@ Setting the <<<--release>>> of the Java Compiler
since Java 9. As such, the release number does not start with 1.x anymore. Also note that the
supported <<<release>>> targets include the release of the currently used JDK plus a limited number
of previous releases.

* Usage on JDK 8

The <<<--release>>> option is not supported using JDK 8. To enable a project that targets Java 8
to be built using JDK 8 and also JDK 9 or later requires the conditional usage of the
<<<--release>>> option. This may be done through the use of a profile:

+-----
<project>
[...]
<profiles>
[...]
<profile>
<id>set-compiler-release</id>
<activation>
<jdk>[9,)</jdk>
</activation>
<properties>
<maven.compiler.release>8</maven.compiler.release>
</properties>
</profile>
[...]
</profiles>
[...]
</project>
+-----