执行NAMKE时C1083错，急

我使用nmake编译程序时报C1083错,错误信息如下：

D:\Projects\gdal-1.1.8\port>nmake makefile.vc

Microsoft (R) Program Maintenance Utility Version 7.10.3077
Copyright (C) Microsoft Corporation. All rights reserved.

cl /nologo /Ox -I..\port -I..\ogr -I..\core /c cpl_conv.cpp cpl_conv.cpp
d:\Projects\gdal-1.1.8\port\cpl_port.h(139) : fatal error C1083: Cannot open include file: 'stdio.h': No such file or directory
NMAKE : fatal error U1077: 'cl' : return code '0x2'
Stop.

我猜测是环境变量没设好，但我已经运行vcvars32.bat，他返回：
D:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin>"D:\Program Files\Microsoft Visual Studio .NET 2003\Common7\Tools\vsvars32.bat"
Setting environment for using Microsoft Visual Studio .NET 2003 tools.
(If you have another version of Visual Studio or Visual C++ installed and wish to use its tools from the command line, run vcvars32.bat for that version.)

我还需要做什么设置么？