c++ mingw STL installation

Question

I recently installed MinGW and MSYS on my Windows 32 machine and it seems to be running fine.

On the C++ compiler, I am including a vector container and getting no errors to that. But I`m getting compile-time errors when I try to use it.

So, the code

#include <vector>  // include vector.h  
#include <stdio.h>  // include stdio.h

using namespace std;

main()  {

//   vector<int> A;  

printf("\nHeya ..");

}

is running just fine. However, the moment I un-comment line 8-- the vector declaration line, I get the following error (shortened) in compile time:

undefined reference to 'operator delete(void*)'
undefined reference to '__gxx_personality_v0'

Answer 1

I don't see how you are compiling your code. Your main method is invalid, incorrect signature and you aren't returning anything.

Should be like this:

#include <vector>  // include vector.h  
#include <stdio.h>  // include stdio.h

using namespace std;

int main(int, char**)  {

//   vector<int> A;  

printf("\nHeya ..");
return 0;
}

Also you need to compile this with g++ and not gcc.

Answer 2

You're probably compiling with gcc instead of g++. The actual compiler is the same, but g++ tells the linker to use the default C++ libraries, were gcc only tells it to look at the C libraries. As soon as you use and C++-specific parts of the standard library, gcc will fail.

As an aside, C++ doesn't support the default int rule from old C, so you should really specify the return type from main.