statically linking pthreads

[VASILI3000]

hello groups,

i am trying to make a statically compiled executable of my application,
which uses the pthreads library facilities. I am not able to link, i am
getting much errors from the linker, of wich i would like to have some
clue. to better isolate the problem i wrote a small program that
reflects the problem.

the code is really simple:

#include <pthread.h>

class pthread_static_v
{
 public:
  pthread_static_v();
  pthread_static_v(const pthread_static_v&);
  ~pthread_static_v();

};

pthread_static_v::pthread_static_v()
{
  pthread_t pid;
  int ret = pthread_create(&pid, NULL, (some function pointer), NULL);
}

pthread_static_v::pthread_static_v(const pthread_static_v& a){}

pthread_static_v::~pthread_static_v(){}

int main()
{
  pthread_static_v a = pthread_static_v();
  return 1;
}

and this is what i get after issuing:

$ g++ -static threads_static.c -o threads_static

/home/vzafiropoulos/tmp/ccOsS8sA.o(.text+0x11): In function
`pthread_static_v::pthread_static_v()':
: undefined reference to `pthread_create'
/home/vzafiropoulos/tmp/ccOsS8sA.o(.text+0x22): In function
`pthread_static_v::pthread_static_v()':
: undefined reference to `pthread_exit'
/home/vzafiropoulos/tmp/ccOsS8sA.o(.text+0x37): In function
`pthread_static_v::pthread_static_v()':
: undefined reference to `pthread_create'
/home/vzafiropoulos/tmp/ccOsS8sA.o(.text+0x48): In function
`pthread_static_v::pthread_static_v()':
: undefined reference to `pthread_exit'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/../../../libstdc++.a(eh_alloc.o)(.data._ZZ18__gthread_active_pvE20__gthread_active_ptr+0x0):
In function `__cxa_free_exception':
../../../../gcc-3.4.1/libstdc++-v3/libsupc++/eh_alloc.cc:98: undefined
reference to `pthread_create'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/../../../libstdc++.a(eh_alloc.o)(.text.__cxa_allocate_exception+0x4b):
In function `__cxa_free_exception':
/root/gcc_build/i586-mandrake-linux-gnu/libstdc++-v3/include/i586-mandrake-linux-gnu/bits/gthr-default.h:96:
undefined reference to `pthread_create'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/../../../libstdc++.a(eh_alloc.o)(.text.__cxa_free_exception+0x38):
In function `__cxa_free_exception':
../../../../gcc-3.4.1/libstdc++-v3/libsupc++/eh_alloc.cc:139: undefined
reference to `pthread_create'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/../../../libstdc++.a(eh_globals.o)(.data._ZZ18__gthread_active_pvE20__gthread_active_ptr+0x0):
In function `__cxa_get_globals':
../../../../gcc-3.4.1/libstdc++-v3/libsupc++/eh_globals.cc:49:
undefined reference to `pthread_create'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/../../../libstdc++.a(eh_globals.o)(.text.__cxa_get_globals+0x45):
In function `__cxa_get_globals':
/root/gcc_build/i586-mandrake-linux-gnu/libstdc++-v3/include/i586-mandrake-linux-gnu/bits/gthr-default.h:95:
undefined reference to `pthread_create'
/usr/lib/gcc/i586-mandrake-linux-gnu/3.4.1/libgcc_eh.a(unwind-dw2.o)(.text+0x139c):../../gcc-3.4.1/gcc/gthr-posix.h:95:
more undefined references to `pthread_create' follow
collect2: ld returned 1 exit status


i tried various combnations of "/usr/lib/libpthread.a" or "-pthread"
into the compile/link line, but with no luck.
furthermore, dynamically linking the code has positive results.
i am starting to suspect that i have a big problem with
glibc/pthreads/stdlibc++ configuration...

can anyone help?

thank you all,
vasilis.