Question

I am working on a school project in C++ and am using our schools unix server to write it as instructed by the professor. I am using vim and g++ to compile.

This project is built off another project, Lab0 which I had no trouble getting to build after some help from the TA, but had to do some weird stuff to get it to build (#include LinkedSortedList.cpp file at the bottom of LinkedSortedList.h). Everyone in the class did this weird stuff with #include .cpp file.

First, here are the files and what #includes they have for Lab0 which is compiling fine:

(The post is not showing my tabs in my makefile but they’re there!)

makefile:

main: *.cpp *.h

g++ -o LSL main.cpp

clean:

rm -f *.o LSL*

Lab0 (The one that builds), is like this:

Files:

main.cpp (NOT Templated):

#include "LinkedSortedList.h"
#include <iostream>
using namespace std;

SortedList.h (Templated):
Nothing

LinkedNode.h (Templated):

#include <iostream>
using namespace std;

LinkedSortedList.h (Templated):

#include "SortedList.h"
#include "LinkedNode.h"
#include <iostream>
using namespace std;

#include "LinkedSortedList.cpp" // At the bottom fo this file above the #endif to get the program to compile from what the TA told me to do for lab0 due to the templated class.

LinkedSortedList.cpp (Templated):
Nothing

No problems building and running this project.

Here is my issue:

Below is lab1, the one I am having trouble with and Lab1 uses all the files from Lab0 just adds Employee.h and Employee.cpp.

Lab1 (The one that won’t build) is like this:

Files:

lab1.cpp:

#include <iomanip>
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <stdexcept>
#include "Employee.h"
#include "LinkedSortedList.h"

SortedList.h (Templated):
Nothing

LinkedNode.h (Templated):

#include <iostream>
using namespace std;

LinkedSortedList.h (Templated):

#include "SortedList.h"
#include "LinkedNode.h"
#include "Employee.h"
#include <iostream>
using namespace std;

#include "LinkedSortedList.cpp" // At the bottom fo this file above the #endif to get the program to compile from what the TA told me to do for lab0 due to the templated class.

LinkedSortedList.cpp (Templated):
Nothing

Employee.h (NOT templated):

#include <iostream>
#include <sstream>
using namespace std;

Employee.cpp (NOT templated):

#include <stdio.h>
#include <string.h>

(The post is not showing my tabs in my makefile but they’re there!)

makefile:

main: *.cpp *.h

g++ -o LSL lab1.cpp

clean:

rm -f *.o LSL*

Errors I get:

Here are the errors I am getting. It seems like the Employee.cpp/Employee.h files are not being seen. Any ideas??


unixserver:Lab1> make
g++ -o LSL lab1.cpp
/tmp/ccamnaqx.o: In function createRecord()':
lab1.cpp:(.text+0x3fb): undefined reference toEmployee::Employee()’
lab1.cpp:(.text+0x477): undefined reference to Employee::setLastName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
lab1.cpp:(.text+0x4f2): undefined reference toEmployee::setFirstName(std::basic_string, std::allocator >)’
lab1.cpp:(.text+0x589): undefined reference to Employee::setId(int)'
lab1.cpp:(.text+0x5ce): undefined reference toEmployee::setSalary(int)’
lab1.cpp:(.text+0x60e): undefined reference to Employee::setDepartment(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
lab1.cpp:(.text+0x67c): undefined reference toEmployee::setPhoneNumber(std::basic_string, std::allocator >)’
lab1.cpp:(.text+0x6ea): undefined reference to Employee::setAddress(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
lab1.cpp:(.text+0x758): undefined reference toEmployee::setHireDate(std::basic_string, std::allocator >)’
lab1.cpp:(.text+0x7c6): undefined reference to `Employee::setEmailAddress(std::basic_string, std::allocator >)’
collect2: ld returned 1 exit status
make: * [main] Error 1


Any help would be greatly appreciated!

Answer 1

You have to compile Employee.cpp and link it into the executable:

g++ -o LSL lab1.cpp Employee.cpp

It could be that the same goes for LinkedSortedList.cpp (its purpose is not entirely clear to me).