Ich habe den folgenden Code von ausgeschnitten und eingefügteine frühere Frage in eine Datei namens "avishay.cpp" und lief dann

gcc avishay.cpp

nur um die folgenden Fehlermeldungen vom Linker zu erhalten. Was ist schief gelaufen, was hätte ich tun sollen?

carl@carl-ubuntu:~/Projects/StackOverflow$ gcc -static avishay.cpp 
/tmp/cccRNW34.o: In function `__static_initialization_and_destruction_0(int, int)':
avishay.cpp:(.text+0x41): undefined reference to `std::ios_base::Init::Init()'
avishay.cpp:(.text+0x46): undefined reference to `std::ios_base::Init::~Init()'
/tmp/cccRNW34.o: In function `A::func()':
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x11): undefined reference to `std::cout'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x16): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x1e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x26): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x36): undefined reference to `std::cout'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x3b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
/tmp/cccRNW34.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

Der C ++ - Code (nicht mein Code, ich habe nur versucht, ihn auszuführen):

#include <iostream>
using namespace std;

class A
{
private:
   int _dmember;

public:
   void func()
   {
     cout<<"Inside A!! "<<endl;
     cout<<_dmember; // crash when reach here.
   }
};

int main ()

{

    A* a= NULL;

    a->func(); // prints "Inside A!!!" 

    return 1;
}