A quick follow up to note that with 2.8.2, using log4j-api does not cause
problems but then adding log4j-core causes the app to fail to start. So I
definitively see an Android epic for 2.10. Maybe this is when we want to
split up log4j-core.

Gary

On Sat, Jul 8, 2017 at 3:20 PM, Gary Gregory <garydgreg...@gmail.com> wrote:

> So here I am with my family our of town on a weekend, and I thought I'd
> give Log4j on Android a try.
>
> The first thing I run into is:
>
> FAILURE: Build failed with an exception.
>
> * What went wrong:
> Execution failed for task ':Application:transformResourcesWithMergeJav
> aResForDebug'.
> > com.android.build.api.transform.TransformException:
> com.android.builder.packaging.DuplicateFileException: Duplicate files
> copied in APK META-INF/LICENSE
> File1: C:\Users\ggregory\.gradle\caches\modules-2\files-2.1\
> org.apache.logging.log4j\log4j-core\2.8.2\979fc0cf8460302e4ffbfe38c1b66a
> 99450b0bb7\log4j-core-2.8.2.jar
> File2: C:\Users\ggregory\.gradle\caches\modules-2\files-2.1\
> org.apache.logging.log4j\log4j-api\2.8.2\e590eeb783348ce8ddef205b82127f
> 9084d82bf3\log4j-api-2.8.2.jar
>
>
> * Try:
> Run with --stacktrace option to get the stack trace. Run with --info or
> --debug option to get more log output.
>
> BUILD FAILED
>
> Total time: 1.995 secs
>
> which is solved by:
>
> https://stackoverflow.com/questions/37586800/android-
> gradle-duplicate-files-copied-in-apk-meta-inf-license-txt
>
> Which means I have to add this to my build:
>
> packagingOptions {
>     exclude 'META-INF/DEPENDENCIES'
>     exclude 'META-INF/LICENSE'
> }
>
> I wonder if we should generate these files pretending we are in an uber jar, 
> either:
>
> - with the project name in the name like META-INF/log4j2.LICENSE
>
> - with maven AID in the name like META-INF/log4j-api.LICENSE
>
> - with maven coords in the name like 
> META-INF/org.apache.logging.log4j-log4j-api.LICENSE
>
> As an aside files like LICENSE and NOTICE do not have .txt extensions which 
> is lame IMO.
>
> Ignore and do nothing? Thoughts?
>
> Gary
>
>

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