jleedev · May 31, 2011 16:23
diff --git a/extern.cpp b/extern.cpp
 int a = 4;
diff --git a/header.h b/header.h
 extern int a;
diff --git a/main.cpp b/main.cpp
 #include <iostream>

 #include "header.h"

 int main(void) {
 	std::cout << a << std::endl;
 }
diff --git a/Makefile b/Makefile
 all: main

 extern.o: extern.cpp

 main.o: main.cpp

 main: main.o extern.o
 	g++ $^ -o $@
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