SCIP and Visual Studio: error LNK2001

1
votes

I am trying to make the SCIP work with C++ in Windows 10. I want to solve the VRP problem using SCIP (version 3.2.1) in Visual Studio 2010.

I have downloaded Source files and then precompiled dlls from the http://scip.zib.de and included the .hpp and cpp files in my VS project. there was a .dll, a .exe and a .lib file in the archive.

In the project properties I did the following:

C/C++ -> General -> Additional Include Directories: C:\scipoptsuite-3.2.1\scip-3.2.1\src\

C/C++ -> Linker -> Input-> Additional Dependencies: C:\Users\Mahla\Desktop\src\scip-3.2.1.win.x86_64.msvc.opt.spx.ld.lib;

C/C++ -> General -> Input-> Additional Library Dependencies: C:\Users\Mahla\Desktop\src\scip-3.2.1.win.x86_64.msvc.opt.spx.ld.lib;

VC++ Directories-> Include Directories: C:\Users\Mahla\Desktop\src;

VC++ Directories-> Library Directories: C:\Users\Mahla\Desktop\src;

src folder is a copy of src down in the scip root directory.

I copied .dll, .lib and .exe in the Debug folder at the same level as the solution .sln file in Visual Studio.

When building, I get many errors like :

main_vrp.obj : error LNK2001: unresolved external symbol _SCIPcreateConsLinear

Can anyone tell me what is the problem or how to set up an example in VS.

Thank you very much.

1
c++visual-studio-2010scip
You could investigate the libraries with this tool to find out where it is expecting its dependencies: dependencywalker.com – mattmilten
@mattmilten : I haved linked Cplex to the project and also installed scipoptsuite using Cygwin, so I think soplex should have been linked to the SCIP at default. Do I need to link SCIP and Cplex too, for building solution in visual studio? – math2014
The dll you downloaded contains SoPlex already. You also cannot link CPLEX to it since you can have only one LP solver at a time. The library should work on its own – mattmilten
Do I need to link .o and .a files in the lib and obj folder in SCIP root directory? – math2014
No, these are contained in the library. – mattmilten

1 Answers

1
votes

I am using a x64 version of SCIP. So my "Platform" should be x64, not Win32, or it will give LNK errors. I simply changed the platform in configuration manager to x64 and everything was okay then.