Tom Hawkins wrote:
> I have a bunch of global variables in C I would like to directly read
> and write from Haskell. Is this possible with FFI,
Yes it is, as explained in section 4.1.1. in the FFI specification [1].
An import for a global variable int bar would look like this:
foreign import ccall "&bar" bar :: Ptr CInt
The difference to an import of a function int foo() is the extra "&".
HTH,
Bertram
[1] http://www.cse.unsw.edu.au/~chak/haskell/ffi/ffi/ffise4.html#x7-170004.1.1
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