I’m using OrcJIT with the C API, i had a lot of headaches trying to make it work, LLVMAddLazilyCompiledIR kept failing no matter what, but LLVMAddEagerlyCompiledIR worked fine this is on an ARM Device, tried lazy ir on an x86_64 ubuntu and it worked fine this really confused me for months and months until today i found a bit of the issue, i was using llvm 7 and after updating to 8 i now get an error message about no callback manager available when i call LLVMOrcCreateInstance then looking at https://github.com/llvm-mirror/llvm/blob/release_80/lib/ExecutionEngine/Orc/IndirectionUtils.cpp#L115i see where the error is coming from, why is ARM not in that list? as far as i know lazy ir needs a callback manager and that is not implemented for ARM.