Mike Drob created MNG-5961:
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Summary: Maven possibly not aware of log4j2
Key: MNG-5961
URL: https://issues.apache.org/jira/browse/MNG-5961
Project: Maven
Issue Type: Bug
Components: Logging
Affects Versions: 3.3.9
Reporter: Mike Drob
Using a fresh install of maven 3.3.9 I followed the steps at
https://garygregory.wordpress.com/2015/03/23/watch-maven-in-color to add color
highlighting to my output. Everything works as expected, however on all usages
I would get the warning:
{noformat}
[WARN] The SLF4J binding actually used is not supported by Maven:
org.apache.logging.slf4j.Log4jLoggerFactory
[WARN] Maven supported bindings are:
[WARN] (from
jar:file:/opt/apache-maven-3.3.9/lib/maven-embedder-3.3.9.jar!/META-INF/maven/slf4j-configuration.properties)
- ch.qos.logback.classic.LoggerContext
- org.slf4j.helpers.Log4jLoggerFactory
- org.slf4j.impl.SimpleLoggerFactory
{noformat}
This looks pretty harmless, and I was able to suppress it by manually adding
the line
{code}
org.apache.logging.slf4j.Log4jLoggerFactory
org.apache.maven.cli.logging.impl.Log4j2Configuration
{code}
to {{/META-INF/maven/slf4j-configuration.properties}} in
{{maven-embedder-3.3.9.jar}}.
I'm not sure that this is a "correct" solution, and I'm not even confident I
could explain what effect it has, hence not posting a patch, but somebody with
more knowledge might be able to triage this better. Or offer an "official" way
to do colorized output.
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