Runtime error for sc_module_name on msvc

[Navaneet kumar]

Hi,

I have written a very simple sc_module and created a dll library (libmodule.dll and .lib) for the same under cygwin using msvc cmdline (corresponding to visual studio 2015). I then link this module with a sc_main program, which calls module constructor. As soon as the program is executed, I get this error:

Error: (E533) module name stack is empty: did you forget to add a sc_module_name parameter to your module constructor?
In file: ..\..\src\sysc\kernel\sc_object_manager.cpp:373

What could be the issue?

Here is example source code:

// Module.h

class DLL_API myclass : public sc_core::sc_module
{
public:
        myclass(sc_core::sc_module_name name) ;
        void display();

};
 

// Module.cpp

myclass::myclass(sc_core::sc_module_name name) : sc_core::sc_module(name) 
{
        std::cout << "Inside cons\n";
}
void myclass::display()
{
        std::cout << "Calling display\n";
}
 

// DLL_API is defined as

#ifdef DLL_EXPORT
#define DLL_API   __declspec(dllexport)
#else
#define DLL_API   __declspec(dllimport)
#endif
 

// Main program

int sc_main(int argc, char * argv[])
{
   myclass obj("myclass");
   obj.display();

   return 0;
}
 

//Compilation cmds

cl /MD /EHsc /D DLL_EXPORT /I "C:\external_dep\systemc-2.3.1\src" -c Module.cpp
link /SUBSYSTEM:WINDOWS /INCREMENTAL:NO /NOLOGO /DLL /OPT:REF /OPT:ICF /DYNAMICBASE:NO /NXCOMPAT /MACHINE:"X64" /LIBPATH:"C:\external_dep\systemc-2.3.1\msvc80\SystemC\x64\Release"  /OUT:"libmodule.dll" SystemC.lib Module.obj
cl /MD /EHsc /D DLL_EXPORT /I "C:\external_dep\systemc-2.3.1\src" -c sc_main.cpp
link /SUBSYSTEM:CONSOLE /LIBPATH:"C:\external_dep\systemc-2.3.1\msvc80\SystemC\x64\Release" SystemC.lib libmodule.lib sc_main.obj
./sc_main.exe <- running this gives above error

 

Surprisingly, when I move Module constructor body from Module.cpp to Module.h, the error goes away.
 

[Roman Popov]

Do you have SystemC compiled as DLL? Otherwise you have same issue as described here : https://forums.accellera.org/topic/6540-inserting-existing-software-into-tlm-frame/

[Navaneet kumar]

I am compiling SystemC as static library (.lib). That's what is getting linked everywhere. Do you still think that can be issue?

[maehne]

As you are already building your SystemC model using DLLs, I would suggest that you also build SystemC as a DLL and link to it. This most probably should fix your problem as suggested by @Roman Popov.

[Navaneet kumar]

When I built SystemC as a DLL, it resolved all the issues. Thanks!