Cannot create a working makefile. Understand nothing about it - makefile

Question

I assume most of you will think I did not try to search on the internet by myself but I really did. I understand nothing on makefile and I tried to create one for c++.
I have only two files: Set.hpp and main.cpp.
Here is my wrong makefile.
CC=g++
CFLAGS= --std=c++0x --pedantic -g -Wall -W
LDFLAGS=
EXEC=main
all: $(EXEC)
main: Set.o main.o
$(CC) -o main Set.o main.o $(LDFLAGS)
main.o: main.cpp
$(CC) -o main.o -c main.cpp $(CFLAGS)
Set.o: Set.hpp
$(CC) -o Set.o -c Set.hpp $(CFLAGS)
clean:
rm -rf *.o
mrproper: clean
rm -rf $(EXEC)
The error I get is simply Make: * no targets. Stop.. I really need help for this please :/ Thank you in advance :)

Answer 1

.hpp files are header files. They are NOT to be complied. They are to be included in the source file. You can find more about the .hpp files and some related info here.
Now, to start with a "working" version of your makefile, let's consider the following points. I assume you have two source files
1. main.cpp
2. Set.cpp
and one header file
1. Set.hpp
in the same directory. Please consider the sample files provided below.
main.cpp
#include <iostream>
#include "Set.hpp"
using namespace std;
int main()
{
call_func();
cout <<"And this is from main.cpp"<<endl<<endl;
return 0;
}
Set.cpp
#include <iostream>
#include "Set.hpp"
using namespace std;
int call_func()
{
cout<<"This is from set.cpp"<<endl<<endl;
return 0;
}
Set.hpp
#include <iostream>
using namespace std;
int call_func();
Makefile
CC=g++
CFLAGS= --std=c++0x --pedantic -g -Wall -W
LDFLAGS=
EXEC=main
all: $(EXEC)
main: Set.o main.o
$(CC) -o main Set.o main.o $(LDFLAGS)
main.o: main.cpp
$(CC) -o main.o -c main.cpp $(CFLAGS)
Set.o: Set.cpp # notice the change from .hpp to .cpp
$(CC) -o Set.o -c Set.cpp $(CFLAGS) # notice the change
clean:
rm -rf *.o
mrproper: clean
rm -rf $(EXEC)
After that, the output is like
[sourav#infba01383 so_overflow]# make
g++ -o Set.o -c Set.cpp --std=c++0x --pedantic -g -Wall -W
g++ -o main.o -c main.cpp --std=c++0x --pedantic -g -Wall -W
g++ -o main Set.o main.o
[sourav#infba01383 so_overflow]# make
make: Nothing to be done for `all'.
[sourav#infba01383 so_overflow]# make clean
rm -rf *.o
[sourav#infba01383 so_overflow]#
Hope this helps!!!