Error C2733 second C linkage of overloaded function after moving to OF 0.8.0

visual studio
#1

Hi

I’ve had a project working in 0.7.4 in VS2010 and I’ve made a hard decision to move all of my code to 0.8.0 to be up to date. I’ve had to recreate the project from scratch using projectGenerator (visual studio settings give me a headache… somehow xCode manages pretty well with all that C++ project configuration complexity). After i’ve recreated the project I’ve started to get strange error

Error C2733: ‘GetProcessInformation’ : second C linkage of overloaded function is not allowed

This error points to a header file in $(OF_CORE_PATH)/libs/quicktime/include/Processes.h. I cannot remove the file from external dependencies and only commenting out the code which defines GetProcessInformation makes the project compile successfuly. Does anyone know what might cause this issue? I’m a noob on Windows+VS and configuring the project.

#2

openFrameworks supports Visual Studio 2012 only.
So, do you run it with VS2010 or VS2012?

#3

I’m running it in Visual Studio 2012 Express for Windows Desktop

#4

Was this ever resolved?

I’m also on Visual Studio 2012 Express. I was able to run some projects successfully, but I am now trying to port/run the ofxKinectNui (https://github.com/sadmb/ofxKinectNui) example and getting this “second C linkage” error.

I’ve also tried using the migrationToVS2012 bash script but it’s failing because it can’t find the “devenv” command.

#5

I’m having the exact same problem. Any news about this?

#6

My “solution” was to comment out the problematic definition. I know it’s not the proper way but I needed to continue with my project.

#7

I just ran into the same issue. I think it has something to do with openFrameworks re-defining some VS/Windows constants, so if you include things like <windows.h> before ofMain.h, when ofMain.h is finally included and redefines things, it might conflict with other stuff already linked.

So in a nutshell my solution was to include ofMain.h at the top of the file where I had my other fancy includes that are calling more windows specific code. Which apparently won’t work well with ofxKinectNui as its specifically says “#include “kinect/nui/Kinect.h” // this should be before ofMain.h”

For further reference, my feeling is that the ofConstant.h file is messing around with some settings :

  
#ifdef TARGET_WIN32  
	//this is for TryEnterCriticalSection  
	//[http://www.zeroc.com/forums/help-center/351-ice-1-2-tryentercriticalsection-problem.html](http://www.zeroc.com/forums/help-center/351-ice-1-2-tryentercriticalsection-problem.html)  
	#ifndef _WIN32_WINNT  
		#define _WIN32_WINNT 0x500  
	#endif  
	#define WIN32_LEAN_AND_MEAN  
  
	#if (_MSC_VER)  
		#define NOMINMAX		  
		//[http://stackoverflow.com/questions/1904635/warning-c4003-and-errors-c2589-and-c2059-on-x-stdnumeric-limitsintmax](http://stackoverflow.com/questions/1904635/warning-c4003-and-errors-c2589-and-c2059-on-x-stdnumeric-limitsintmax)  
	#endif
#8

Hi I had the this same error while trying to run ofxEdsdk on windows. As I needed it to work I simply removed quicktime from OF, which was what was giving the problems.
Obviously this is not a good solution and it worked for me as I wasn’t using Quicktime.
It would be really good to get this fixed.
The idea of having the includes reordered might work well but I feel that it is also a quick and dirty hack that might lead into further confusion. I’ll recheck this trying to see if OF is redefining something which causes the problem.

#9

Sorry guys,
I didn’t notice this thread.

I have solved this problem.
Check latest version.

For more information see below.

Thanks. :blush:

#10

Just ran upon this in 0.8.1. My solution is also commenting out the line that gives the issue.

#11

It appears that this is still an issue. I just ran into it attempting to build ofxKinectForWindows2 in vs2012 on win10. https://github.com/elliotwoods/ofxKinectForWindows2/issues/35

#12

@braitsch I just ran into the exact same issue. However I’m using VS2015 but it has a version selector and I believe i’m in 2012 mode.

#13

For the googlers out there – got this error in OF084 on Windows 8 in VS2012 when running ofxKinectForWindows2.

Commented out the line (i believe in processes.h) and boom up and running.