thread local storage support in libc

[Zoltan Varga]

                                         Hi,

  Using the __thread attribute does not seem to work under debian amd64:

<<<<<<<<<<<<
static __thread int foo;

void bar ()
{
        foo = 5;
}
<<<<<<<<<<<<

$> gcc -fPIC --shared -o foo.so foo.c
$> gcc -o foo foo.so
foo.so: undefined reference to `__tls_get_addr'

I'm using gcc-3.4 and libc6 2.3.2.ds1-15. I think the amd64 version of
libc6 is not
compiled with the proper TLS support. The above code works on ia32, and on
the amd64 version of Suse 9.1.

                                  Zoltan