OpenViBE forum

I am having problems compiling (using visual studio) the C++client program which is included in "VRPN Tutorial : Sending data from OpenViBE to an external application" tutorial. I do not know how to include all the header files as part of a new project in VS2010.

The error i get when i try to build a project containing vrpnclient.cpp, vrpn_Button.h, vrpn_Analog.h

vrpnClient.obj: error LNK2019: unresolved external symbol "public: _thiscall vrpn_Analog_Remote::vrpn_Analog_Remote(char const * ... ) ..
vrpnClient.obj: error LNK2019: unresolved external symbol "public: _thiscall vrpn_Button_Remote::vrpn_Button_Remote(char const * ... ) ..
fatal error LNK1120: 2 unresolved externals

Thanks.

Hello s.ri08

in Windows, in order to include the VRPN library you have to do two things :

Right click the project in the solution explorer and go to properties -> configuration properties -> VC++ directories. There you have to set the include directory to the vrpn includes folder (openvibe/dependencies/vrpn/includes) and the library directories to (openvibe/dependencies/vrpn/lib).

Afterwards, in the same menu in Linker -> Input you have to add "vrpn.lib" to the list of dependencies.

With these settings everything should compile just OK

Best
Jozef

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yes, i have the same problem, but now it works.... thanks to legnay...

Hi guys,

I am experiencing a similar problem while running the demo code and I also get those 2 errors when compiling.

For me the issue is that I can't include the VRPN library in visual studio because my openvibe/dependencies/vrpn/ folder is empty aside for a single bin folder.

How can i get these dependency files?

hi wuwu622,

The VRPN folder should definitely contain some file (lib, bin and include folders).
The easiest way to get it back is to re-install the dependencies by executing win32-instal_dependencies.exe in scripts once again (reinstall all dependencies and not only VRPN).

For your information, this dependency installer downloads the archives in dependencies/arch. For VRPN, you should have
- vrpn-7.26-runtime.zip
- vrpn-7.26-vs100-dev.zip

Hope this helps...

Laurent-

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Thanks for the reply,

I followed your steps and ran the win32-install file to re-install dependencies. However, after the installation my VRPN folder still lacks the dependency files you mentioned (include, lib). The only folder present is a bin folder with vrpn_print_devices.exe in it.

also my depencencies/arch directory does not contain vrpn-7.26-vs100-dev.zip, only vrpn-7.26-runtime.


I installed openViBE with the windows executable installer, should I compile the source code instead?



Any help would be greatly appreciated.

Hi,

Yes you should download the source code version to have the development libraries for VRPN.
With the windows installer version, only the runtime are given (to have a lighter installer).

The dependencies installer in the source package install every dev libs of the dependencies.
You will have to build the platform then.

Laurent

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