help ! problem compiling c++ using the GNU stuff in the OS4.0 SDK

// Helloworld.cpp
#include <iostream>
using namespace std;

int main (void)
{
cout << "Hello world !\n";

return 0;
}

CFLAGS =

CC = gcc -O4 -g -DINLINE=__inline
AR = ar
RANLIB = ppc-amigaos-ranlib
DEBUGLIB =

all: HelloWorld

#HelloWorld: HelloWorld.o
# $(CC) -o HelloWorld HelloWorld.o gcc:lib/libm.a

HelloWorld.o: HelloWorld.cpp
$(CC) -c HelloWorld.cpp -o HelloWorld.o

5.Development:Development/cpp-projects/Helloworld> make
gcc -O4 -g -DINLINE=__inline -c HelloWorld.cpp -o HelloWorld.o
gcc -O4 -g -DINLINE=__inline HelloWorld.o -o HelloWorld
HelloWorld.o(.text+0x6): In function `main':
/Development/Development/cpp-projects/Helloworld/HelloWorld.cpp:8: undefined reference to `std::cout'
HelloWorld.o(.text+0x12):/Development/Development/cpp-projects/Helloworld/HelloWorld.cpp:8: undefined reference to `std::cout'
HelloWorld.o(.text+0x1c):/Development/Development/cpp-projects/Helloworld/HelloWorld.cpp:8: 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*)'
HelloWorld.o(.text+0x80): In function `__static_initialization_and_destruction_0':
/gcc/lib/gcc/ppc-amigaos/4.0.2/../../../../include/c++/4.0.2/iostream:76: undefined reference to `std::ios_base::Init::~Init()'
HelloWorld.o(.text+0x94):/gcc/lib/gcc/ppc-amigaos/4.0.2/../../../../include/c++/4.0.2/iostream:76: undefined reference to `std::ios_base::Init::Init()'
make: *** [HelloWorld] Error 1

Jack wrote:
@agafaster

g++ , not gcc (you have c++ program there)