[Solved] Fatal error: “No Target Architecture” in Visual Studio
When I try to compile my c++ project using Visual Studio 2010 in either Win32 or x64 mode I get the following error:
>C:Program Files (x86)Microsoft SDKsWindowsv7.0Aincludewinnt.h(135): fatal error C1189: #error : "No Target Architecture"
My preprocessor definitions say WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)
What is causing this error and how do I fix it?
// winnt.h: lines 127-136, MSVS says this is an inactive preprocessor block
Update: I created a new msvs project and copied my code to it. I no longer have
error : "No Target Architecture", but now I have a bunch of compile errors involving winnt.h and winbase.h and no compile errors involving any of my files. Is it possible these files are corrupted? Do I need to reinstall MSVS 2010?
Update 2: So I narrowed down my problem and found that it is
#include <WinDef.h> that is causing all of my compile errors with winnt.h but I still don’t know how to fix it.
#include <windows.h> instead of
windows.h wikipedia page:
There are a number of child header files that are automatically included with
windows.h. Many of these files cannot simply be included by themselves (they are not self-contained), because of dependencies.
windef.h is one of the files automatically included with
Another cause of this can be including a header that depends on
windows.h, before including
In my case I included
windows.h and got this error. Swapping the order solved the problem.
If you are using Resharper make sure it does not add the wrong header for you, very common cases with ReSharper are:
Another suggestion is to check if you are including a “partial Windows.h”, what I mean is that if you include for example winbase.h or minwindef.h you may end up with that error, add “the big” Windows.h instead. There are also some less obvious cases that I went through, the most notable was when I only included synchapi.h, the docs clearly state that is the header to be included for some functions like AcquireSRWLockShared but it triggered the No target architecture, the fix was to remove the synchapi.h and include “the big” Windows.h.
The Windows.h is huge, it defines macros(many of them remove the No target arch error) and includes many other headers. In summary, always check if you are including some header that could be replaced by Windows.h because it is not unusual to include a header that relies on some constants that are defined by Windows.h, so if you fail to include this header your compilation may fail.
_WIN32 identifier is not defined.
MSVS generated projects wrap this include by generating a local
"targetver.h"which is included by
"stdafx.h" that is comiled into a precompiled-header through
EDIT : do you have a /D “WIN32” on your commandline ?
Solve it by placing the following include files and definition first:
It would seem that
_AMD64_ is not defined, since I can’t imagine you are compiling for Itanium (
I had a similar problem. In my case, I had accidentally included
windows.h (actually, a buggy IDE extension had added it). Removing the
winuser.h solved the problem.
Besides causes described already, I received this error because I’d include:
Apparently it was not needed (despite of CreateDirectoryW call). After commenting out, compiler was happy. Very strange.
At the beginning of the file you are compiling, before any
include, try to put ONE of these lines
Choose the appropriate, only one, depending on your architecture.
Another reason for the error (amongst many others that cropped up when changing the target build of a Win32 project to X64) was not having the C++ 64 bit compilers installed as noted at the top of this page.
Further to philipvr’s comment on child headers, (in my case) an explicit include of winnt.h being unnecessary when windows.h was being used.
If you are building 32bit then make sure you don’t have _WIN64 defined for your project.