errors when linking c++ on cygwin

[Chris Meyer <cmeyer at gatan dot com>]

Hi,

I built the 3.1 branch under cygwin on windows and when I try to compile 
a simple hello world program using cout I get the following errors:

bash-2.05a$ g++3 -save-temps test.cc
test.o(.text+0x2f):test.cc: undefined reference to `std::cout'
test.o(.text+0x3c):test.cc: 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*)'
test.o(.text+0x47):test.cc: 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> 
 >&)'
test.o(.text+0x4c):test.cc: 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> >&))'
test.o(.text+0x75):test.cc: undefined reference to 
`std::ios_base::Init::Init[in-charge]()'
test.o(.text+0x90):test.cc: undefined reference to 
`std::ios_base::Init::~Init [in-charge]()'
test.o(.eh_frame+0x11):test.cc: undefined reference to 
`___gxx_personality_v0'
collect2: ld returned 1 exit status
bash-2.05a$ g++3 -v
Reading specs from /usr/local/lib/gcc-lib/i686-pc-cygwin/3.1/specs
Configured with: ../gcc/configure --enable-languages=c,objc,c++ 
--program-suffix=3
Thread model: single
gcc version 3.1 20020311 (prerelease)
bash-2.05a$

The program is

#include <iostream>

using namespace std;

int main()
{
    cout << "Hello world!\n" << endl;
    return 0;
}


When I run the equivalent program and use 'c' instead of c++ it works 
and links fine.

Has anyone run into any similar problems or can anyone point me in a 
useful direction?