LLVM interpreter external function

Hello everyone,

I’m trying to interpret some bytecode(compiled from c source code) but it seems some external function is not supported. Is there any way to make it work?

command: lli -force-interpreter file.bc
error: LLVM ERROR: Calling external var arg function ‘_snprintf’ is not supported by the Interpreter.

I’ve compiled llvm on windows with visual studio.

Thank you in advance,
Fulcrum