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https://issues.apache.org/jira/browse/MCOMPILER-534?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Osipov updated MCOMPILER-534:
-------------------------------------
Summary: Document conditional setting of the --release property (was:
Broken command line generated on Java 8 when maven.compiler.release is set)
> Document conditional setting of the --release property
> ------------------------------------------------------
>
> Key: MCOMPILER-534
> URL: https://issues.apache.org/jira/browse/MCOMPILER-534
> Project: Maven Compiler Plugin
> Issue Type: Improvement
> Affects Versions: 3.11.0
> Environment: Apache Maven 3.9.1
> (2e178502fcdbffc201671fb2537d0cb4b4cc58f8)
> Maven home: /usr/local/Cellar/maven/3.9.1/libexec
> Java version: 1.8.0_362, vendor: Homebrew, runtime:
> /usr/local/Cellar/openjdk@8/1.8.0+362/libexec/openjdk.jdk/Contents/Home/jre
> Default locale: en_US, platform encoding: UTF-8
> OS name: "mac os x", version: "13.3.1", arch: "x86_64", family: "mac"
> Darwin **** 22.4.0 Darwin Kernel Version 22.4.0: Mon Mar 6 21:00:17 PST
> 2023; root:xnu-8796.101.5~3/RELEASE_X86_64 x86_64
> Reporter: Gary D. Gregory
> Assignee: Michael Osipov
> Priority: Major
> Fix For: 3.11.1
>
>
> Apache Commons Parent 57 RC1
> (https://lists.apache.org/thread/rwgf9c7dgl2bymq3jg6ckxs6gk9pz4mg) attempts
> to use the javac release flag only on Java 9 and above withÂ
> {code:xml}
> <maven.compiler.release>8</maven.compiler.release>
> {code}
> and
> {code:xml}
> <profile>
> <id>jdk9-compiler</id>
> <activation>
> <jdk>[9</jdk>
> </activation>
> <build>
> <pluginManagement>
> <plugins>
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-compiler-plugin</artifactId>
> <configuration>
> <release>${maven.compiler.release}</release>
> </configuration>
> </plugin>
> </plugins>
> </pluginManagement>
> </build>
> </profile>
> {code}
> This fails miserably:
> {noformat}
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 5.402 s
> [INFO] Finished at: 2023-04-23T09:23:21-04:00
> [INFO]
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile
> (default-compile) on project commons-lang3: Fatal error compiling: invalid
> flag: --release -> [Help 1]
> [ERROR]
> [ERROR] To see the full stack trace of the errors, re-run Maven with the -e
> switch.
> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please
> read the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
> {noformat}
> IMO, setting a property "maven.compiler.release" should not be used on
> compilers that do not support the flag.
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