Gary D. Gregory created MCOMPILER-534:
-----------------------------------------
Summary: Broken command line generated on Java 8 when
maven.compiler.release is set
Key: MCOMPILER-534
URL: https://issues.apache.org/jira/browse/MCOMPILER-534
Project: Maven Compiler Plugin
Issue Type: Bug
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
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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