Re: How to link a Fortran static library to a C++ program?

Guch Wu wrote:
I build a Fortran static library whitch has a function using Intel
Visual Fortran 9.0. There is a function as follow:

subroutine sub(a)
implicit none
integer :: a
write(*,*) a
return
end subroutine

Now I link it to a C++ program in Visual C++ 2003:

#pragma comment( lib, "FLib.lib" )

#ifdef __cplusplus
extern "C"{
#endif

void _stdcall SUB(int *a);

#ifdef __cplusplus
}
#endif

int main(int argc, _TCHAR* argv[])
{
int a = 10;
SUB(&a);
return 0;
}

When building the C++ project, there is a problem:
error LNK2019: unresolved external symbol _SUB@4 referenced in function
_main

How can I fix the problem?

Read your compiler documentation as to mixed language linkage. Intel Fortran does not use STDCALL linkage in its default mode. Remove "_stdcall" from the C caller and things will work fine.

N. Shamsundar
University of Houston
.

Relevant Pages

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