[Haskell-cafe] Anonymous FFI calls

Simon Peyton Jones simonpj at microsoft.com
Wed Feb 11 10:40:19 UTC 2015

This may be relevant.  http://www.cse.unsw.edu.au/~chak/papers/CMCK14.html
Manuel gave a talk about something like this at the Haskell Symposium.


|  -----Original Message-----
|  From: Haskell-Cafe [mailto:haskell-cafe-bounces at haskell.org] On Behalf
|  Of Francesco Mazzoli
|  Sent: 11 February 2015 10:26
|  To: haskell; ghc-devs at haskell.org
|  Subject: [Haskell-cafe] Anonymous FFI calls
|  Hi,
|  I am in a situation where it would be very useful to call C functions
|  without an explicit FFI import.  For example, I'd like to be able to
|  do
|      (foreign import ccall "cadd" :: CInt -> CInt -> CInt) 1 2
|  instead of declaring the foreign import explicitely at the top level.
|  Is there a way to do this or to achieve similar results in some other
|  way?
|  If not, I imagine it would be easy to implement such a facility in
|  GHC, given that the code implementing calling to C functions must
|  already be present to implement "proper" FFI imports.  I think such an
|  addition would be useful in many cases.
|  Thanks,
|  Francesco
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