Originally posted by: Anjikum

Hello,

I am trying to build CPLEX 12.7 trial version with Visual Studio Code installed in Windows. While doing so, I am not successful at build with cplex to sample project. 

Can I build CPLEX with Visual studio Code?

Thanks in Advance.

What exactly is the problem you are facing? How are you trying to compile/link things from Visual Studio Code?

Also, CPLEX should not be different from any other 3rd party library, so you should probably check with a Visual Studio Code forum how to include 3rd party software in builds in general.

Originally posted by: diegorossit

I am facing the same problem. It would be nice to get a detailed reply.

It seems it cannot find the ilcplex/ilocplex.h. This is what I get:

Executing task: g++ -g main.cpp <

main.cpp:7:10: fatal error: ilcplex/ilocplex.h: No such file or directory
 #include "ilcplex/ilocplex.h"
          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
The terminal process terminated with exit code: 1

Terminal will be reused by tasks, press any key to close it.

This is my c_cpp_properties.json file

Can you paste the compiler command line the tool actually uses?

One thing that seems to be definitely missing is -DIL_STD (this will produce errors once you get the inclusion working correctly).

The usual way to do things is

- go to $CPLEX/cplex/examples/x86-64_linux/static_pic

- run 'make blend'

This compiles and links the program blend.cpp. It shows all commands that are executed. From this you should be able to pick up all the flags that are required for compiling and linking an application that uses CPLEX. Then configure your 3rd party tool with these settings.

BTW, assuming your output is complete, the compiler command line is just

g++ -g main.cpp

No include paths, nothing else. You should probably check with the maintainers of this tool how to correctly configure additional include paths etc.

Originally posted by: beyondzhao

Hi, diegorossit,

I got the same problem with you. And I am not familiar with the programming of C++. Have you solved this problem? I would appreciate if you can give me some advice.

Did you try the things I suggested? In particular, did you run 'make blend' as instructed and setup your development environment so that it produces the same compiler and linker command lines?

Originally posted by: beyondzhao

I have run the command "make blend" and it succeeded. But my own .cpp file still not work.
And what you say about "set development environment" is writting a make file for .cpp file? Or something else? I will appreciate your help if you can explain specifically because that I am not familiar with C++.

When you run 'make blend' then you will see a lot of output that contains the compiler and linker flags. Since you asked in a thread titled "Visual Studio Code" I was assuming that you are using Visual Studio Code as development environment. Each development environment has ways to set compiler and linker flags for a project. You have to find these and add the required flags there. If none of this makes any sense to you then you probably first should make yourself familiar with C++ and how to compile and link C++ applications with 3rd party libraries. This is unrelated to CPLEX and I would guess that there are tutorials for this.

If you use a development environment then you don't have to explicitly create a makefile. However, if you want to work with a makefile then you can just copy the makefile that comes with CPLEX, replace 'blend' with your own file and be done. Note that on Windows there is no makefile for C++ projects, instead there are project configurations for Microsoft Visual Studio. If you are on Windows you may also want to read the file c_cpp.html that can be found in the installation directory. It explains how to setup projects for Microsoft Visual Studio. Things may be similar for Visual Studio Code.

Originally posted by: beyondzhao

OK, I'll learn more about C++. Thank you very much for your help.

Originally posted by: beyondzhao

Hi,

I installed codeblocks on my ubuntn system and set the configuration according to the website http://www-01.ibm.com/support/docview.wss?uid=swg21449771.
In fact what I want to use is cpoptimizer, and in the step 4 ,5 I also added the path of cpoptimizer. But when I run my code in codeblocks, it still get the error "undefined reference to IloCP". Do you have some experience about using CP or know how to set the compile and linker options of CP?

You may want to ask this question in one of the forums related to CP optimizer here.

Also include the exact error message as well as the compiler and linker command lines used by codeblocks.

Originally posted by: diegorossit

Hi! I am sorry I didn't solve it....... so nowadays I used Visual Studio Express for Desktop in Windows and Codeblocks in Linux for using CPLEX.

I hope you are more skilled than me and you can solve it!

Good luck!

Diego

Originally posted by: beyondzhao

Thank you all the same.

Originally posted by: beyondzhao

Hi,

I installed codeblocks on my ubuntn system and set the configuration according to the website http://www-01.ibm.com/support/docview.wss?uid=swg21449771.
In fact what I want to use is cpoptimizer, and in the step 4 ,5 I also added the path of cpoptimizer. But when I run my code in codeblocks, it still get the error "undefined reference to IloCP". Do you have some experience about using CP or same problems like this?