Android app is not building on Linux - .NET MAUI 9 RC1

[egvijayanand]

Description

Android app is not building on Linux - .NET MAUI RC1.

Ends up with some weird error message.

Steps to Reproduce

1. Ensure MAUI Android workload is installed on Linux
2. Create a new .NET MAUI app on Linux
3. Build the app targeting the Android platform
4. Build fails with weird error messages (Refer to the log output for details)

Link to public reproduction project repository

Default template itself is suffice, no authored code

Version with bug

9.0.0-rc.1.24453.9

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

9.0.0-preview.6.24327.7

Affected platforms

Android

Affected platform versions

Android 35.0

Did you find any workaround?

Nope.

Relevant log output

dotnet build -f net9.0-android Command output.

Restore complete (0.5s)
You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy
  MauiApp9 failed with 1 error(s) (4.5s)
    /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.0-rc.1.80/tools/Xamarin.Android.EmbeddedResource.targets(39,5): error XARLP7000:
      System.DllNotFoundException: Unable to load shared library 'libZipSharpNative-3-3' or one of its dependencies. In order to help
       diagnose loading problems, consider using a tool like strace. If you're using glibc, consider setting the LD_DEBUG environment
       variable:
      /usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0-rc.1.24431.7/libZipSharpNative-3-3.so: cannot open shared object file: No
      such file or directory
      /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linu
      x/35.0.0-rc.1.80/tools/libZipSharpNative-3-3.so)
      /usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0-rc.1.24431.7/liblibZipSharpNative-3-3.so: cannot open shared object file:
      No such file or directory
      /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.0-rc.1.80/tools/liblibZipSharpNative-3-3.so: cannot open shared object
       file: No such file or directory
      /usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0-rc.1.24431.7/libZipSharpNative-3-3: cannot open shared object file: No suc
      h file or directory
      /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.0-rc.1.80/tools/libZipSharpNative-3-3: cannot open shared object file:
       No such file or directory
      /usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0-rc.1.24431.7/liblibZipSharpNative-3-3: cannot open shared object file: No
      such file or directory
      /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.0-rc.1.80/tools/liblibZipSharpNative-3-3: cannot open shared object fi
      le: No such file or directory

         at Xamarin.Tools.Zip.Native.zip_open(IntPtr path, OpenFlags flags, ErrorCode& errorp)
         at Xamarin.Tools.Zip.Native.zip_open(String path, OpenFlags flags, ErrorCode& errorp) in /Users/runner/work/1/s/LibZipSharp/
      Xamarin.Tools.Zip/Native.cs:line 162
         at Xamarin.Tools.Zip.ZipArchive.Open(String path, OpenFlags flags) in /Users/runner/work/1/s/LibZipSharp/Xamarin.Tools.Zip/Z
      ipArchive.cs:line 187
         at Xamarin.Tools.Zip.ZipArchive.Open(String path, FileMode mode, String defaultExtractionDir, Boolean strictConsistencyCheck
      s, IPlatformOptions options) in /Users/runner/work/1/s/LibZipSharp/Xamarin.Tools.Zip/ZipArchive.cs:line 267
         at Microsoft.Android.Build.Tasks.Files.ReadZipFile(String filename, Boolean strictConsistencyChecks) in /mnt/vss/_work/1/s/x
      amarin-android/external/xamarin-android-tools/src/Microsoft.Android.Build.BaseTasks/Files.cs:line 335
         at Xamarin.Android.Tasks.MonoAndroidHelper.ReadZipFile(String filename) in /mnt/vss/_work/1/s/xamarin-android/src/Xamarin.An
      droid.Build.Tasks/Utilities/MonoAndroidHelper.cs:line 361
         at Xamarin.Android.Tasks.ResolveLibraryProjectImports.Extract(IDictionary`2 jars, ICollection`1 resolvedResourceDirectories,
       ICollection`1 resolvedAssetDirectories, ICollection`1 resolvedEnvironments, ICollection`1 proguardConfigFiles) in /mnt/vss/_wo
      rk/1/s/xamarin-android/src/Xamarin.Android.Build.Tasks/Tasks/ResolveLibraryProjectImports.cs:line 396
         at Xamarin.Android.Tasks.ResolveLibraryProjectImports.RunTask() in /mnt/vss/_work/1/s/xamarin-android/src/Xamarin.Android.Bu
      ild.Tasks/Tasks/ResolveLibraryProjectImports.cs:line 95
         at Microsoft.Android.Build.Tasks.AndroidTask.Execute() in /mnt/vss/_work/1/s/xamarin-android/external/xamarin-android-tools/
      src/Microsoft.Android.Build.BaseTasks/AndroidTask.cs:line 25

Build failed with 1 error(s) in 5.7s

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[egvijayanand]

It builds successfully on .NET 8. The issue is only with .NET 9.

[dellis1972]

can you do a find in /usr/share/dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.0-rc.1.80/tools/ and look for libZipSharpNative ?

If it is there. can you run ldd on it and make sure it has all its dependencies.

[dellis1972]

ah there it is. /lib/x86_64-linux-gnu/libc.so.6: versionGLIBC_2.33'` your libc is not up to date or does not match.

[egvijayanand]

ah there it is. /lib/x86_64-linux-gnu/libc.so.6: versionGLIBC_2.33'` your libc is not up to date or does not match.

So what's the resolution? And which one to update?