undefined-reference

Just a simple program, but I keep getting this compiler error. I'm using MinGW for the compiler. Here's the header file, point.h : //type for a Cartesian point typedef struct { double x; double y; } Point; Point create(double x, double y); Point midpoint(Point p, Point q); And here's point.c : //This is the implementation of the point type #include "point.h" int main() { return 0; } Point create(double x, double y) { Point p; p.x = x; p.y = y; return p; } Point midpoint(Point p, Point q) { Point mid; mid.x = (p.x + q.x) / 2; mid.y = (p.y + q.y) / 2; return mid; } And here's where the compiler

This question already has an answer here: Why do I get “unresolved external symbol” errors when using templates? [duplicate] 3 answers Undefined reference to template members 1 answer I always get undefined reference to `Graph::InsertVertex(std::string)' if I compile my project! Any hints why he cant resolve this reference? (all Files are in the netbeans project folder) // main.cpp #include <cstdlib> #include <string> #include "Graph.h" using namespace std; int main(int argc, char** argv) { Graph<string> *graph = new Graph<string>(); // <--- ERROR graph->InsertVertex("A"); return 0; } // Node

I can't get the additional libraries I am working with to link into my project properly. I am using CLion, which uses cmake to build it's projects. I am trying to use several libraries in conjunction with OpenGL to texture some objects. I initially built it in Visual Studio, because I couldn't ever figure out how to get cmake to work with Clion. However, now that the code is all working (in Visual Studio, anyways), I want to be able to use CLion for it, because that is my preferred IDE. I am still new to cmake, and I don't understand what I am doing wrong with my CMakeLists.txt . Here is what