Article: Q228455
Product(s): Microsoft C Compiler
Version(s): winnt:6.0
Operating System(s):
Keyword(s): kbCompiler kbLinker kbVC600
Last Modified: 07-MAY-2001
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The information in this article applies to:
- Microsoft Visual C++, 32-bit Enterprise Edition, version 6.0
- Microsoft Visual C++, 32-bit Professional Edition, version 6.0
- Microsoft Visual C++, 32-bit Learning Edition, version 6.0
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SYMPTOMS
========
When compiling a multiple source file project that creates a pre-compiled header
file inside the Visual C++ Integrated Development Environment (IDE), the
following error can occur:
Compiling...
StdAfx.cpp
LINK : fatal error LNK1561: entry point must be defined
Error executing cl.exe.
NOTE: The linker error is generated during the compiler phase of the build.
CAUSE
=====
The /c compiler option is missing from the build settings.
RESOLUTION
==========
Add /c to the compiler options. To do this, you must edit the compiler options
in the Project Options box in the C/C++ tab under Project Settings.
NOTE: This box is only editable if the whole project is selected in the tree
control on the Project Settings.
STATUS
======
This behavior is by design.
MORE INFORMATION
================
By default, the Visual C/C++ compiler attempts to compile and link in a single
step. The /c (Compile without Linking) option is used to tell the compiler to
compile only. Since Visual C++ compiles and links in separate steps, then /c is
required for all Visual C++ builds.
To reproduce the error, create a default MFC project and remove the /c option
from the Project Settings by editing the compiler options in the Project Options
box in the C/C++ tab under Project Settings.
REFERENCES
==========
(c) Microsoft Corporation 1999, All Rights Reserved.
Contributions by Kelly Marie Ward, Microsoft Corporation
Additional query words:
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Keywords : kbCompiler kbLinker kbVC600
Technology : kbVCsearch kbAudDeveloper kbVC600 kbVC32bitSearch
Version : winnt:6.0
Issue type : kbprb
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