external functions in mcjit

[sfultong]

I want to be able to use external functions (either defined in C or Haskell with foreign export) in mcjit. If it's already possible with these bindings, I haven't been able to figure it out.

If it is possible, I would pay to see example code.

If it isn't possible, I am interested in paying for development efforts to make it possible.

[cocreature]

How tied are you to MCJIT? The ORC JIT API should generally be more powerful and flexible and I wouldn’t be surprised if LLVM itself drops the MCJIT API in the near future.sure if the A

I was planning to write up some example code for calling C functions in dynamic libraries from ORC JIT for some time, so I’ll try to get to this over the next few days. (I think it should be possible using the current API but I’ve never tried it).

For MCJIT I am honestly not sure if it’s possible and I would prefer to spend development efforts on ORC JIT.

[sfultong]

Oh, I wasn't aware of the ORC JIT! I'm certainly not tied to MCJIT.

Thanks for the info. I'll evaluate ORC and close this issue if I can use it.

[sdiehl]

Here are some examples if you're looking to use ORC JIT:
https://github.com/llvm-hs/llvm-hs-examples/tree/master/orc

[cocreature]

FTR I’m working on a blogpost on how to call functions in static and dynamic libraries using ORC JIT. Should hopefully be ready in the next few days.

[cocreature]

Here’s the blog post. Hopefully, it should answer your question @sfultong.

[sfultong]

Thanks @cocreature !