Microsoft KB Archive/105596

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ERR: "Unresolved Reference" Using C 7.0 Makefile with 2.5 LCK

ID: Q105596

The information in this article applies to:

  • Microsoft FoxPro Library Construction Kit, version 2.5
  • Microsoft FoxPro for Windows, versions 2.5, 2.5a


When you are creating a library using the FoxPro 2.5 Library Construction Kit (LCK), numerous errors occur during the compiling and linking process. One of these errors is "Unresolved Reference."


The error occurs because the C compiler (Microsoft C 7.0 in this case) cannot find the library, object, or header file that is displayed in the error.

For example, the compiler may not be able to find the LIBW.LIB file that is referenced in the makefile provided with the LCK for use with Microsoft C 7.0. This file, part of the Microsoft Windows Software Development Kit (SDK), is a library file containing Windows functions that can be called in a FoxPro for Windows .FLL library. When you are using the Microsoft C 7.0 makefile provided with the LCK to produce an .FLL library, the "Unresolved Reference" error message will occur if the SDK is not installed.


To track down the cause of the "Unresolved Reference" error, do the following:

1. Check for the existence of the file that contains the function or

   library reference that is causing the error.

2. Check the MS-DOS PATH statement to make sure the file or library

   can be found at compile and link time.

3. Make sure all MS-DOS SET environment variables needed by the

   compiler are set correctly in the AUTOEXEC.BAT file.

4. Make sure the filename listed in the makefile is spelled correctly.


A makefile is used to compile and link a C library or executable. As mentioned above, there is a sample makefile for use with C 7.0 in conjunction with the LCK to create C libraries to interface with FoxPro for Windows. The libraries created by the LCK have an extension of .PLB for FoxPro for MS-DOS and .FLL for FoxPro for Windows.


FoxPro Library Construction Kit, "Developer's Guide," version 2.5, page 27

Additional reference words: FoxWin 2.50 2.50A C7 errmsg err msg tshoot KBCategory: kbprg kbprb kberrmsg kbtshoot KBSubcategory: FxtoolLck

Last Reviewed: August 28, 1995
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