How to use/avoid #pragma inside #ifdef statement

Question

I have code that is used across platforms (Windows and Linux). In windows the code uses precompiled headers so I include stdafx.h but in linux I don't. So I have this at the top of every .cpp file:

#ifdef WIN32
#include "stdafx.h"
#endif // WIN32  // compiler error here

This compiles fine on linux but in Visual Studio 2013 I get the compiler error:

Error 2 error C1020: unexpected #endif

I think it is because stdafx.h contains a #pragma once macro.

How can I fix this and is there a better way to make the code cross-platform?

I don't think that's the issue. `#ifdef WIN32 #pragma once #endif` works fine in this [online VS compiler](http://rextester.com/l/cpp_online_compiler_visual). — uh oh somebody needs a pupper, Jun 03 '16 at 05:53
Possible duplicate of [Handling stdafx.h in cross-platform code](http://stackoverflow.com/questions/1191248/handling-stdafx-h-in-cross-platform-code) — uh oh somebody needs a pupper, Jun 03 '16 at 05:54
Surely the straightforward solution is not to use pre-compiled headers? — Clifford, Jun 03 '16 at 07:56

Vinod · Answer 1 · 2016-06-11T18:55:13.780

2

This error you are getting because compiler completely ignores everything written before precompiled header. You can put desired thing in stdafx.h instead of conditional include of precompiled header.

Also please see this link https://connect.microsoft.com/VisualStudio/feedback/details/506745/visual-studio-2008-c-fatal-error-c1020-unexpected-endif

edited Jun 11 '16 at 18:55

answered Jun 03 '16 at 06:28

Vinod

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How to use/avoid #pragma inside #ifdef statement

1 Answers1