Re: [Haskell-cafe] [Haskell] ANNOUNCE: system-filepath 0.4.5 and system-fileio 0.3.4

On 08/02/2012 02:26, John Meacham wrote:

On Tue, Feb 7, 2012 at 4:24 AM, Simon Marlow wrote:

...

Separately the unix package added support for undecoded FilePaths (RawFilePath), but unfortunately at the same time we started using a new extension in GHC 7.4.1 (CApiFFI), which we decided not to document because it was still experimental:

Hi, from my reading, it looks like 'capi' means from a logical perspective,

"Don't assume the object is addressible, but rather that the standard c syntax for calling this routine will expand into correct code when compiled with the stated headers"

So, it may be implemented by say creating a stub .c file that includes the headers and creates a wrapper around each one or when compiling via C, actually including the given headers and the function calls in the code.

Yes, that's exactly it. In GHC we create a stub (even when compiling via C, for simplicity of implementation). Cheers, Simon

I ask because jhc needs such a feature (very hacky method used now, the rts knows some problematic functions and includes hacky wrappers and #defines.) and I'll make it behave just like the ghc one when possible.

John