error when comiler JIT feature target on Android

[andge]

Thanks for filing a bug or defect report! Please fill out the TODOs below.

Subject of the issue

i want to compiler iwasm for android . when i use the default setting , i can get iwasm.so successfully . but when i use the command like so

./build_llvm.sh
cmake .. -DWAMR_BUILD_TARGET=AARCH64 -DANDROID_ABI=arm64-v8a 
make 

then , i get errors like these

build/lib/libLLVMCore.a(Module.cpp.o) is incompatible with aarch64linux

Test case

Your environment

• Host OS
  Linux mi-OptiPlex-7080 6.5.0-26-generic Fix minor compile warning #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Mar 12 10:22:43 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
• WAMR version, platform, cpu architecture, running mode, etc.
  i use the newest git repo

Steps to reproduce

Tell us how to reproduce this bug or defect.

Expected behavior

Tell us what should happen

Actual behavior

can produce right so file

Extra Info

[TianlongLiang]

IIUC, you are trying to do a cross-compile where the target is aarch64 and your host is x86.
In order to do that, you need to make sure the backend aarch64 is enabled in your LLVM build. You can compile a wamrc and use ./wamrc --target=help to check whether aarch64 is in the list. Also, you need to set CMake flags for cross compile, something like:

# make sure you have corresponding toolchain installed
cmake -DWAMR_BUILD_PLATFORM=linux -DWAMR_BUILD_TARGET=AARCH64 -DCMAKE_C_COMPILER=arm-linux-gnueabihf-gcc -DCMAKE_CXX_COMPILER=arm-linux-gnueabihf-g++ -DCMAKE_ASM_COMPILER=arm-linux-gnueabihf-as -B build