I am compiling the following code using clang++ and the compiler keeps erroring out with undefined reference to anything in the Link class. I assumed the compiler must not be getting the link.cpp definitions for all of the functions and constructors in the cpp file but I don't know if its some kind of include error or a makefile error at this point. Also this makefile outputs as a.out but I tohught the -o flag should make it output as prog1.
main.cpp
#include <iostream>
#include <link.h>
int main (int argc, const char * argv[]) {
int i = 10;
while(i >= 0) {
i--;
}
Link test = new Link();
std::cout << "Hello, World!2\n";
return 42;
}
link.h
#ifndef LINK_H
#define LINK_H
#include <string>
using namespace std;
class Link {
private:
string * value;
Link * next;
public:
Link(Link * nextLink, string * stringValue);
~Link();
}
#endif
link.cpp
#include <link.h>
Link::Link(Link * nextLink, string * stringValue) {
this.next = nextLink;
this.value = stringValue;
}
Link::~Link() {
delete value;
}
Link * Link::getNext() {
return next;
}
string * Link::getString() {
return value;
}
void Link::printAll() {
if (next != NULL) {
cout << value << "\n" << next->printAll();
} else {
cout << value << "\n";
}
}
makefile
main.o: main.cpp
clang++ -g -Wall -Wextra main.cpp
link.o: link.cpp link.h
clang++ -g -Wall -Wextra link.cpp link.h
all: main.o link.o
clang++ -g -Wall -Wextra main.o link.o -o prog1
