Precompiled Headers IntelliSense Error

Question

I have Precompiled Headers enabled in a static library project I am working on. Looking around other StackOverflow questions, it seems like the key place to #include "stdafx.h" is in the .cpp file, not the .h file.

However, when I do this in Visual Studio, I get an IntelliSense error:

1 IntelliSense: PCH warning: header stop cannot be in a macro or #if block. An IntelliSense PCH file was not generated. ....\Common\Core\Geometry\Ellipsoid.h 9

The static library project does compile successfully, even with this IntelliSense error.

The .h file consists of this class declaration:

#ifndef GEOMETRY_ELLIPSOID_H
#define GEOMETRY_ELLIPSOID_H

class Ellipsoid { // 'class' is underlined with a red line (error)
    // ...
};

#endif // !GEOMETRY_ELLIPSOID_H

The .cpp defines the class declared in the header:

#include "Common\Core\stdafx.h"
#include "Ellipsoid.h"

// ...

By including stdafx.h in the header, the intelliSense error disappears. Is this the correct way to use precompiled headers? What implications are there in including stdafx.h in the header?

This isn't exactly the solution to your problem, but in Visual Studio I go to project properties -> C/C++ -> Advanced and put my PCH as a force include, and then never worry about it again! — Neil Kirk

Dawid Strucker Dawid Strucker · Accepted Answer · 2014-11-13T07:34:00

You have to add #pragma once at the start of the file Answere is here: PCH Warning: header stop cannot be in a macro or #if block - Visual C++ 2010 Express SP1 macro-or-if-block-visual-c-2010-exp

Precompiled Headers IntelliSense Error

1 Answers