[cfe-users] find external function from other module within module pass

[Bella V via cfe-users]

Hello,
I have a module pass as well as a function pass which I'm invoking on
shared library LLVM IR .so (which has multiple C source files). The library
has linked external functions from another module (shared library), how do
I identify those functions which are not defined in the current module.
Tried the DI LLVM API.
Would really appreciate any help.
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