Re: C++ and Fortran - Help linking files
Re: C++ and Fortran - Help linking files
- Subject: Re: C++ and Fortran - Help linking files
- From: David Bourne <email@hidden>
- Date: Fri, 11 Nov 2016 19:03:47 -0700
- Authentication-results: symauth.service.identifier
ABI = Application Binary Interface?
> On Nov 11, 2016, at 3:09 PM, Quincey Morris <email@hidden> wrote:
>
> On Nov 11, 2016, at 13:49 , David Bourne <email@hidden> wrote:
>>
>> extern "C"
>> {
>> void FR1(int *, int *);
>> int FF1(int *);
>> }
>
> If this is correct in C++ then you don’t need C++ at all. This says that these functions use the C ABI, and you can call those directly from Swift (using a C header file, I guess).
My problem was the link between C (or C++) and Fortran. Swift to C is another matter and uses a bridge file between C and Swift.
> However, this is different from the code you linked to in 2 ways:
>
> 1. You left out “__stdcall”, which is a Windows thing, but to use your declarations you have to be certain that the Fortran ABI on the Mac is the same as the C ABI on the Mac. (Probably is, but I don’t know.) Also, you need to be sure that you’re not mixing 32- and 64-bit architectures.
Xcode 8.1 didn’t like the __stdcall bit
> 2. You didn’t actually provide Fortran routines called FR1 and FF1 in your example source. Instead, you showed a main program and a subroutine. In the linked code, there were actually two Fortran routines with these names.
They are on the page below.
Thanks, David
> I’m not sure if you assumed the above declarations were mere boilerplate, or if you misquoted your own code.
PS. The example given at http://www.neurophys.wisc.edu/comp/docs/not017/ has both the C++ and Fortran files.
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