Re: [Haskell-cafe] Unable to call function from DLL using FFI

15 Mar 2012

      Hi,

Thanks for very quick reply Claude. Your suggestion resolved the issue.
Using extern "C" worked for me.

Thank you very much.

Thanks to all.

Regards,
Rajendra
...
---------- Forwarded message ----------
From: Claude Heiland-Allen 
Date: Wed, Mar 14, 2012 at 7:43 PM
Subject: Re: [Haskell-cafe] Unable to call function from DLL using FFI
To: haskell-cafe@haskell.org
On 14/03/12 14:01, rajendra prasad wrote:
...
My c++ code(HelloWorld.cpp) looks like this:
Try adding extern "C" { ... } to use the C ABI instead of a C++ ABI (which
usually features symbol name mangling to add type information, among other
things).  (This may not solve the entire problem, but is an important
puzzle-piece).
__declspec(dllexport) int doubleMe(int a)
...
{
    return 2*a;
}
Claude
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