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Getting undefined reference to base class

jjwooyoung (24)
Hi

I'm getting "undefined reference to BaseClass::constructor()" whenever I try to compile. These errors don't pop up in visual studio, and I was wondering if someone can help me?

E.g: undefined reference to `BaseClass::BaseClass(int, int)'

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BaseClass.h

class BaseClass {
protected:
	int const a1;
	int s1;
	...
public:
	BaseClass(int a, int s);
	...
};

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BaseClass.cpp

BaseClass::BaseClass(int a, int s) : a1(a) {
	s1 = s;
}


Then in my derived class:
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ChildClass1.h

class ChildClass1: public BaseClass {
private:
	int abc1;
public:
	ChildClass1(int a, int s);
	void setSomething(string s);
	...
};


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ChildClass1.cpp

ChildClass1::ChildClass1(int a, int s) : BaseClass(a, s) {
	setSomething("hello");
}


I'm getting this undefined reference error for all of my derived classes in regards to the constructor and member functions.

Is there something wrong that I don't see?
Last edited on
jjwooyoung (24)
Found the reason. I had forgotten to add BaseClass.cpp to my makefile... Doh
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