i got this Error : ld.lld: error: undefined symbol: unw_backtrace

Android (ASTC)): ld.lld: error: undefined symbol: unw_backtrace
UATHelper: 패키징 (Android (ASTC)): >>> referenced by AndroidPlatformStackWalk.cpp:196 (C:/Engine/4.27.2/Engine/Source/Runtime/Core/Private/Android\AndroidPlatformStackWalk.cpp:196)
UATHelper: 패키징 (Android (ASTC)): >>> Core/Module.Core.1_of_14.cppa8.o:(FAndroidCrashContext::DumpAllThreadCallstacks() const::$_5::operator()(unsigned int, char const*) const)
UATHelper: 패키징 (Android (ASTC)): >>> referenced by AndroidPlatformStackWalk.cpp:196 (C:/Engine/4.27.2/Engine/Source/Runtime/Core/Private/Android\AndroidPlatformStackWalk.cpp:196)
UATHelper: 패키징 (Android (ASTC)): >>> Core/Module.Core.1_of_14.cppa8.o:(FAndroidPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*))
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): ld.lld: error: undefined symbol: _ULaarch64_init_local
UATHelper: 패키징 (Android (ASTC)): >>> referenced by AndroidPlatformStackWalk.cpp:141 (C:/Engine/4.27.2/Engine/Source/Runtime/Core/Private/Android\AndroidPlatformStackWalk.cpp:141)
UATHelper: 패키징 (Android (ASTC)): >>> Core/Module.Core.1_of_14.cppa8.o:(FAndroidPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*))
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): ld.lld: error: undefined symbol: _ULaarch64_get_reg
UATHelper: 패키징 (Android (ASTC)): >>> referenced by AndroidPlatformStackWalk.cpp:153 (C:/Engine/4.27.2/Engine/Source/Runtime/Core/Private/Android\AndroidPlatformStackWalk.cpp:153)
UATHelper: 패키징 (Android (ASTC)): >>> Core/Module.Core.1_of_14.cppa8.o:(FAndroidPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*))
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): ld.lld: error: undefined symbol: _ULaarch64_step
UATHelper: 패키징 (Android (ASTC)): >>> referenced by AndroidPlatformStackWalk.cpp:158 (C:/Engine/4.27.2/Engine/Source/Runtime/Core/Private/Android\AndroidPlatformStackWalk.cpp:158)
UATHelper: 패키징 (Android (ASTC)): >>> Core/Module.Core.1_of_14.cppa8.o:(FAndroidPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*))
UATHelper: 패키징 (Android (ASTC)): clang++: error: linker command failed with exit code 1 (use -v to see invocation)
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): Error executing C:\Users\PC\AppData\Local\Android\Sdk\ndk\21.4.7075529\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe (tool returned code: 1)
UATHelper: 패키징 (Android (ASTC)): ---------------------- Done ----------------------
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): Rebuild All: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): 1 build system warning(s):
UATHelper: 패키징 (Android (ASTC)): - License is invalid
UATHelper: 패키징 (Android (ASTC)):
UATHelper: 패키징 (Android (ASTC)): Took 17.7268003s to run xgConsole.exe, ExitCode=1
PackagingResults: Error: undefined symbol: unw_backtrace
UATHelper: 패키징 (Android (ASTC)): BUILD FAILED: Command failed (Result:1): C:\Program Files (x86)\IncrediBuild\xgConsole.exe “C:\Engine\4.27.2\Engine\Programs\AutomationTool\Saved\Logs\UAT_XGE.xml” /Rebuild /NoLogo /ShowAgent /ShowTime /no_watchdog_thread. See logfile for details: ‘xgConsole-2022.05.18-09.24.19.txt’
PackagingResults: Error: undefined symbol: _ULaarch64_init_local
PackagingResults: Error: undefined symbol: _ULaarch64_get_reg
PackagingResults: Error: undefined symbol: _ULaarch64_step
PackagingResults: Error: linker command failed with exit code 1 (use -v to see invocation)
UATHelper: 패키징 (Android (ASTC)): AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: 패키징 (Android (ASTC)): BUILD FAILED
PackagingResults: Error: Unknown Error
LogSlate: Took 0.004421 seconds to synchronously load lazily loaded font ‘…/…/…/Engine/Content/Slate/Fonts/Roboto-Italic.ttf’ (157K)

Help Please.

UE 4.27.2ver


and show settings android sdk

1 Like

Hi, Thank you for answering my question.

i builded with full source code version not release ver.

here is my SDK Settings

why the error comes out? can you explain to me what is the problem?
Thanks.

with the settings you have everything great …
try this) if the source version engine he has advantages
https://forums.unrealengine.com/t/pack-a-game-for-android-without-installing-android-studio-update-android-12/492029

honestly?I have never seen such a mistake… but this method always works 100% … if it didn’t work then the problem is not with sdk , this can significantly reduce the search for error