BuildToolCLI strips META-INF from jars

[nikita-island]

Questions to Ask Before Submission

1. Does your app compile and launch successfully without the Intune App SDK? Yes
2. Have you checked the [Microsoft Intune App SDK for Android] repository for similar issues? Yes
3. Are you using the latest version of the [SDK and Plugin]? Yes

Summary

When processing .jars with BuildToolCLI, the tool removes META-INF from the output .jar.
This creates various problems. For example, some .jars contain embedded proguard config META-INF/com.android.tools/r8/*, and stripping them causes compilation errors.

Example of a public .jar where proguard config gets stripped: org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm:1.6.4

Note that when the --input is a directory rather than a .jar, BuildToolCLI copies META-INF correctly.

Details

• Intune Android App SDK Version: 9.7.0
• Gradle Version: N/A, this is standalone BuildToolCLI
• AGP Version: N/A, this is standalone BuildToolCLI
• Operating System (Mac, Linux, Windows) and Version: Linux (Fedora 37)
• Android Studio Version: N/A, this is standalone BuildToolCLI

Logs

Android Studio / Gradle Logs

N/A, no gradle or Android Studio. This is standalone BuildToolCLI.
It doesn't print any errors, rewrite completes successfully. Downstream dex-ing fails with the rewritten .jars.

Gradle Build Plugin Report Logs

N/A, no gradle or Android Studio. This is standalone BuildToolCLI.
It doesn't print any errors, rewrite completes successfully. Downstream dex-ing fails with the rewritten .jars.

[boyzhang-msft]

Hi @nikita-island , thanks for reporting this issue. We have created a bug (ADO# 25068431) internally to track. I'd like to ask a few clarification questions please:

• Is your app a native Android app? Or is it built with some other frameworks like Xamarin?
• Does it work when you put the jar file in a directory, and provide the directory as --input?

[nikita-island]

@boyzhang-msft:

• Is your app a native Android app? Or is it built with some other frameworks like Xamarin?

Yes, it's a native app (with a custom build system that doesn't use Gradle)

• Does it work when you put the jar file in a directory, and provide the directory as --input?

Yes, as I mentioned in the issue, using an extracted .jar works correctly.

[nikita-island]

@boyzhang-msft Hi, any updates on this issue?

[boyzhang-msft]

@nikita-island , we do not have an ETA yet. I'll keep you posted here once we made progress. Sorry about the delay!