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Posted to issues@maven.apache.org by "tatsiana-skurydzina-rovio (via GitHub)" <gi...@apache.org> on 2025/05/30 16:47:32 UTC
[I] Provide easy way to convert all warnings into errors except specific [maven-compiler-plugin]
tatsiana-skurydzina-rovio opened a new issue, #332:
URL: https://github.com/apache/maven-compiler-plugin/issues/332
### New feature, improvement proposal
Hi
I'm playing with [the latest documentation](https://maven.apache.org/plugins/maven-compiler-plugin/compile-mojo.html#parameters) and source code for maven-compiler-plugin for a couple of hours but I cannot find the proper way to achieve what I want. It mean I either missing something in the doc or it's missing.
My goal to achieve the following behaviour with maven-compiler-plugin: fail build on warnings, treat them as errors except usage of deprecated annotation.
```
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.14.0</version>
<configuration>
<source>17</source>
<release>17</release>
<parameters>true</parameters>
<compilerArgs>
<arg>-Xlint:all</arg>
<arg>-Xlint:-deprecation</arg>
<arg>-Werror</arg>
</compilerArgs>
<configuration>
</plugin>
```
It seems the most straightforward but it doesn't compile and other combinations with `showDeprecation`.
Did I miss something obvious or there is no way to archive such behaviour?
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Re: [I] Provide easy way to convert all warnings into errors except specific [maven-compiler-plugin]
Posted by "archiecobbs (via GitHub)" <gi...@apache.org>.
archiecobbs commented on issue #332:
URL: https://github.com/apache/maven-compiler-plugin/issues/332#issuecomment-4445538345
FYI, this is possible now in JDK 26+ using the `-Werror` flag.
```
$ javac --help
...
-Werror Terminate compilation if any warnings occur
-Werror:<key>(,<key>)*
Specify lint categories for which warnings should terminate compilation,
separated by comma.
Precede a key by '-' to exclude the specified category.
Use --help-lint to see the supported keys.
```
Caveat: [there is a bug](https://bugs.openjdk.org/browse/JDK-8349847) in the implementation that will be fixed in 27.
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Re: [I] Provide easy way to convert all warnings into errors except specific [maven-compiler-plugin]
Posted by "elharo (via GitHub)" <gi...@apache.org>.
elharo closed issue #332: Provide easy way to convert all warnings into errors except specific
URL: https://github.com/apache/maven-compiler-plugin/issues/332
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Re: [I] Provide easy way to convert all warnings into errors except specific [maven-compiler-plugin]
Posted by "elharo (via GitHub)" <gi...@apache.org>.
elharo commented on issue #332:
URL: https://github.com/apache/maven-compiler-plugin/issues/332#issuecomment-5454795245
This seems like it belongs in the compiler itself rather than the compiler plugin and will eventually be fixed there.
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