calling fortran dll from visual c++ dll

nandita · ‎08-04-2004

I'm using CVF and Visual Studio .NET.

I included the Fortran dll in the C++ project, and the compiler and linker do not give any errors.

However when I try to use the C++ dll in Stata, I get an error message saying that the fortran dll was not found.

any clues on what the problem is?

sabalan · ‎08-04-2004

1- If your C++ application is on another computer where CVF is not installed, then you would need some CVF run-time libraries installed on this computer. Download VBFRUN66BI.exe from hereand install it on the computer without CVF.

2- If C++ application is on the same computer as CVF, then check the name, spelling, and argument list of both your CVF DLL and call statement in C++.

3- Check even decorations for exporting your DLL name in CVF. Search for "calling conventions" or "calling fortran from C" in this forum.

Sabalan.

nandita · ‎08-05-2004

CVF 6.5, Visual Studio .NET 2003, and Stata 8.2 are all on the same computer.

In C the code is

Code:

extern __declspec(dllimport) void __stdcall fcstata(int *n);

In Fortran

Code:

subroutine fcstata(n)
!dec$ attributes dllexport, alias:'_fcstata@4'::fcstata

There are no compile or link errors.

I included the fortran.lib file in the VC project.

I've even triedsaving the fortran .dll in the VC debug directory.

I have no clue what the problem is.