There is an unknown macro here somewhere message in versions after 1.89

[Robert Watson]

Hi,
We use xll+ from https://www.planatechsolutions.com/xllplus/ to produce an Excel addin providing new Excel functions.
We have been able to use CppCheck up to version 1.89.
With versions after 1.89 we get the msg

" There is an unknown macro here somewhere. Configuration is required. If IMPLEMENT_XLLFN4 is a macro then please configure it. "

for each code module and then no checks are performed for that code module.

The function code below includes header file #include "showerror.h", which includes header file #include <xllplus.h> ,
which includes header file #include <xlpfuncinit.h> which contains the following definition.</xlpfuncinit.h></xllplus.h>

#define IMPLEMENT_XLLFN4(nmEntryPoint, nmEntryPoint4, nmEntryPoint12, \
                                                                                                pszArgTemplate4, pszArgTemplate12, \
                                                                                                pszName, pszArgNames4, pszArgNames12, \
                                                                                                pszCategory4, pszCategory12, \
                                                                                                pszHelpText4, pszHelpText12, \
                         pszArgHelpText4, pszArgHelpText12, \
                                                                                                usHelpTopic, pszHelpTopic, \
                                                                                                pszExt12, usType, usMinVersion, usMaxVersion) \
static XLLFN _xfn_##nmEntryPoint = { \
    0, #nmEntryPoint4, #nmEntryPoint12, pszArgTemplate4, pszArgTemplate12, \
                pszName, pszArgNames4, pszArgNames12, usType, pszCategory4, pszCategory12, \
                "", usHelpTopic, pszHelpTopic, pszHelpText4, pszHelpText12, \
    pszArgHelpText4, pszArgHelpText12, 0, pszExt12, usMinVersion, usMaxVersion }; \
static const XLLFN_INIT _init_xfn_##nmEntryPoint(&_xfn_##nmEntryPoint);

The module containg function code which produces error

// showerror.cpp : Defines the initialization routines for the DLL.
//

#ifdef XLL_LIB_MFC
#include "stdafx.h"
#endif
#include "showerror.h"

#ifdef _DEBUG
#ifdef XLL_LIB_MFC
#define new DEBUG_NEW
#endif
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CshowerrorApp

#ifdef XLL_LIB_MFC
BEGIN_MESSAGE_MAP(CshowerrorApp, CXllApp)
    //{{AFX_MSG_MAP(CshowerrorApp)
        // NOTE - the ClassWizard will add and remove mapping macros here.
        //    DO NOT EDIT what you see in these blocks of generated code!
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()
#endif

/////////////////////////////////////////////////////////////////////////////
// CshowerrorApp construction

CshowerrorApp::CshowerrorApp()
{
    // TODO: add construction code here,
    // Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CshowerrorApp object

CshowerrorApp theApp;

/* static */ LPCTSTR CshowerrorApp::m_pszDefName = _T("showerror");

BOOL CshowerrorApp::InitInstance()
{
    // Call the base class
    if ( !CXllApp::InitInstance() )
        return FALSE;

    // Set the name of the library to the default value
    m_stName = m_pszDefName;

    // Add the statically defined function specifications
    AddStaticFns();

    // TODO: Add your specialized code here

    return TRUE;
}

int CshowerrorApp::ExitInstance()
{
    // TODO: Add your specialized code here (then call the base class)

    return CXllApp::ExitInstance();
}

BOOL CshowerrorApp::OnXllOpenEx()
{
    // TODO: Allocate any application-level resources
    return TRUE;
}

void CshowerrorApp::OnXllClose()
{
    // TODO: Clean up any application-level resources
}

/////////////////////////////////////////////////////////////////////////////
// Exported functions

// TODO: Add your own add-in functions and their associated
//       macros here


// Function:    NewFn1
// Purpose:

//{{XLP_SRC(NewFn1)
                // NOTE - the FunctionWizard will add and remove mapping code here.
                //    DO NOT EDIT what you see in these blocks of generated code!

#pragma region NewFn1 support code
IMPLEMENT_XLLFN4(NewFn1, NewFn1_4, NewFn1_12, "RJ", "UJ$", L"NewFn1", 0, L"Arg"
                L"1", 0, L"14", 0, L"", 0, L"\0", 0, 0, L"{NewFn1,,,{},14,1,1,U,{{0,{Arg1,"
                L"Int,0,,,,,,}}},{},3,,0,0,,,,0,0}", 1, 0, 0)
CXlOper* NewFn1_Impl(CXlOper&, long);
extern "C" __declspec(dllexport)
LPXLOPER12 NewFn1_12(long Arg1)
{
                XLL_FIX_STATE;
                CXlOper xloResult;
                try {
                                CXlStructuredExceptionHandler _seh_;
                                xloResult.HandleResult(NewFn1_Impl(xloResult, Arg1));
                }
                catch(const CXlRuntimeException& ex) {
                                CXllApp::Instance()->DisplayException(xloResult, ex);
                }
                XLP_CATCH_CLR_EXCEPTIONS_TO(xloResult)
                return xloResult.Ret12();
}
extern "C" __declspec(dllexport)
LPXLOPER4 NewFn1_4(long Arg1)
{
                XLL_FIX_STATE;
                CXlOper xloResult;
                try {
                                CXlStructuredExceptionHandler _seh_;
                                xloResult.HandleResult(NewFn1_Impl(xloResult, Arg1));
                }
                catch(const CXlRuntimeException& ex) {
                                CXllApp::Instance()->DisplayException(xloResult, ex);
                }
                XLP_CATCH_CLR_EXCEPTIONS_TO(xloResult)
                return xloResult.Ret4();
}

#pragma endregion

CXlOper* NewFn1_Impl(CXlOper& xloResult, long Arg1)
{
                // End of generated code
//}}XLP_SRC
                // TODO - set the value of xloResult, or return another value
                //                  using CXlOper::RetXXX() or throw a CXlRuntimeException.
                return xloResult.Ret();
}

[Daniel Marjamäki]

I recommend that you create a "xllplus.cfg" file. Here is a start:

<?xml version="1.0"?>
<def format="2">
  <define name="IMPLEMENT_XLLFN4(nmEntryPoint, nmEntryPoint4, nmEntryPoint12, pszArgTemplate4, pszArgTemplate12, pszName, pszArgNames4, pszArgNames12, pszCategory4, pszCategory12, pszHelpText4, pszHelpText12, pszArgHelpText4, pszArgHelpText12, usHelpTopic, pszHelpTopic, pszExt12, usType, usMinVersion, usMaxVersion)" value=""/>
</def>

That solves your problem:

danielm@edge:~/cppcheck$ ./cppcheck --library=mfc fp1.cpp
Checking fp1.cpp ...
fp1.cpp:93:1: error: There is an unknown macro here somewhere. Configuration is required. If IMPLEMENT_XLLFN4 is a macro then please configure it. [unknownMacro]
IMPLEMENT_XLLFN4(NewFn1, NewFn1_4, NewFn1_12, "RJ", "UJ$", L"NewFn1", 0, L"Arg"
^
Checking fp1.cpp: XLL_LIB_MFC...
Checking fp1.cpp: XLL_LIB_MFC;_DEBUG...
Checking fp1.cpp: _DEBUG...

Using the file:

danielm@edge:~/cppcheck$ ./cppcheck --library=mfc --library=xllplus fp1.cpp
Checking fp1.cpp ...
Checking fp1.cpp: XLL_LIB_MFC...
Checking fp1.cpp: XLL_LIB_MFC;_DEBUG...
Checking fp1.cpp: _DEBUG...

If you configure some xllplus macros and functions then feel free to share your xllplus.cfg with us. I would be happy to distribute it in Cppcheck.

[Robert Watson]

Hi Daniel,
Thanks for your response .
I've created a cfg file with your statements and placed it in the cfg folder.
How do I use it with the gui cppcheck?
Rob

[Daniel Marjamäki]

in the gui, create a project file.

in the "Types and Functions" tab, select all configurations that you use.

if you have a custom cfg file, you can put it in the same folder as the project file is in.