Konrad Windszus created MCOMPILER-468:
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Summary: Introduce parameter to be used for source, target and
release
Key: MCOMPILER-468
URL: https://issues.apache.org/jira/browse/MCOMPILER-468
Project: Maven Compiler Plugin
Issue Type: Improvement
Affects Versions: 3.8.1
Reporter: Konrad Windszus
Setting up the maven-compiler-plugin in a way that is compatible with both JDK
< 9 and JDK 9+ is tricky as
# parameter {{release}} breaks compilation with javac 8 or older
(https://github.com/codehaus-plexus/plexus-compiler/issues/140)
# {{source}}, {{target}} and {{release}} accept different values: JDK <= 8 only
supports values starting with {{1.}} while JDK 9+ accepts only {{6}}, {{7}},
{{8}}, {{9}}, ... for {{release}} and in addition also {{1.6}}, {{1.7}} and
{{1.8}} for {{source}} and {{target}}.
I propose to introduce a new parameter which hides that complexity called
{{targetJavaVersion}} accepting both {{1.6}}, {{1.7}} and {{1.8}} and {{6}},
{{7}}, {{8}}, {{9}}, ... and affect either {{release}} for JDK9 + or {{source}}
and {{target}} for JDK < 9.
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