How do I get the compiler to read a downloaded library?

Question

I've downloaded OpenMesh for Linux Ubuntu. I successfuly compiled it following instructions at

https://www.graphics.rwth-aachen.de/media/openmesh_static/Documentations/OpenMesh-8.0-Documentation/a04067.html

using cmake, then make. The result is a "build" folder containing, among other things, a makefile and.o files. I want to use OpenMesh in QT Creator, so I put an example code found on their website at

https://www.graphics.rwth-aachen.de/media/openmesh_static/Documentations/OpenMesh-8.0-Documentation/a04088.html

basically it just displays a cube using cout and data structures I've downloaded. However, there are compilation errors of type "undefined reference to" everywhere.

Here is an example: "../OpenMesh-8.1/src/OpenMesh/Core/Mesh/ArrayKernel.hh:154: error: undefined reference to `OpenMesh::ArrayKernel::is_valid_handle(OpenMesh::HalfedgeHandle) const'

I think that this could be caused because I didn't tell the compiler somehow where I compiled OpenMesh, because someone else got this error at https://linuxfr.org/forums/programmation-c/posts/openmesh

I don't really get it, though, and I don't know much about the compiling process. I don't know how to import downloaded libraries and run them in QT. Does anyone know a simple way to do this? Any help would be really appreciated.

Answer 1

The correct way to do it is to open CmakeLists.txt in qt creator, which organizes everything correctly.