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Won't Fix
Votes
0
Found in
2021.3.33f1
2022.3.14f1
2023.2.2f1
2023.3.0a16
Issue ID
UUM-57571
Regression
No
Build fails when building with ILCPP Scripting Backend and ARMv7 as the Target Architecture
Reproduction steps:
1. Open the attached project "il2cppProject"
2. Choose IL2CPP as the Scripting Backend, and ARMv7 in the "Project Settings/Player/Other Settings/Configuration" menu
3. Build and Run on Android
4. Observe the Console Window
Expected result: Build completed successfully
Actual result: Build failed with the error “{{Building Library/Bee/artifacts/Android/iz17e/libil2cpp.so failed with output:}}
{{Library/Bee/artifacts/Android/il2cppOutput/cpp/Assembly-CSharp.cpp:0: error: undefined reference to '__multi3'}}
{{clang++: error: linker command failed with exit code 1 (use -v to see invocation)}}
{{UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:189)}}"
Reproducible with: 2021.3.33f1, 2022.3.14f1, 2023.2.2f1, 2023.3.0a16
Reproducible: macOS(Intel) 14.0 Sonoma, Windows 10 Pro 22H2
Note:
1. The build is successful when only ARM64 is selected
2. The build is successful with Mono and ARMv7
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Resolution Note:
Fixing this issue requires updating Android NDK to r24 which we are not going to do at the moment.
Possible workarounds:
- export Gradle project from Unity; update NDK path in launcher/build.gradle and unityLibrary/build.gradle files, it should point to the NDK r24 installation; build project using Android Studio.
- add `MethodImpl(MethodImplOptions.NoOptimization)` attribute for the problem method.