AC_CHECK_FUNCS(GetProcessId)
AC_CHECK_DECLS(InterlockedExchange64, [], [], [[#include <windows.h>]])
AC_CHECK_DECLS(InterlockedCompareExchange64, [], [], [[#include <windows.h>]])
+ AC_CHECK_DECLS(InterlockedDecrement64, [], [], [[#include <windows.h>]])
AC_CHECK_DECLS(InterlockedIncrement64, [], [], [[#include <windows.h>]])
AC_CHECK_DECLS(InterlockedAdd, [], [], [[#include <windows.h>]])
AC_CHECK_DECLS(InterlockedAdd64, [], [], [[#include <windows.h>]])