***************
*** 177,188 ****
  } /* cplusplus */
  
  
- #if defined(HAVE_LINUXTHREADS)
- #define THR_KILL_SIGNAL SIGINT
- #else
- #define THR_KILL_SIGNAL SIGUSR2		// Can't use this with LinuxThreads
- #endif
- 
  #ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
  #include <sys/types.h>
  #else
--- 177,182 ----
  } /* cplusplus */
  
  
  #ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
  #include <sys/types.h>
  #else
***************
*** 505,510 ****
  static void clean_up_mutexes(void);
  static int test_if_case_insensitive(const char *dir_name);
  static void create_pid_file();
  
  /****************************************************************************
  ** Code to end mysqld
--- 499,505 ----
  static void clean_up_mutexes(void);
  static int test_if_case_insensitive(const char *dir_name);
  static void create_pid_file();
+ static uint get_thread_lib(void);
  
  /****************************************************************************
  ** Code to end mysqld
***************
*** 544,550 ****
      DBUG_PRINT("info",("Waiting for select_thread"));
  
  #ifndef DONT_USE_THR_ALARM
!     if (pthread_kill(select_thread,THR_CLIENT_ALARM))
        break;					// allready dead
  #endif
      set_timespec(abstime, 2);
--- 539,546 ----
      DBUG_PRINT("info",("Waiting for select_thread"));
  
  #ifndef DONT_USE_THR_ALARM
!     if (pthread_kill(select_thread,
! 		     thd_lib_detected == THD_LIB_LT ? SIGALRM : SIGUSR1))
        break;					// allready dead
  #endif
      set_timespec(abstime, 2);
***************
*** 844,850 ****
  		      sig,my_thread_id());
    }
  #ifdef DONT_REMEMBER_SIGNAL
!   sigset(sig,print_signal_warning);		/* int. thread system calls */
  #endif
  #if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
    if (sig == SIGALRM)
--- 840,846 ----
  		      sig,my_thread_id());
    }
  #ifdef DONT_REMEMBER_SIGNAL
!   my_sigset(sig, print_signal_warning);         /* int. thread system calls */
  #endif
  #if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
    if (sig == SIGALRM)
***************
*** 1841,1848 ****
    DBUG_ENTER("init_signals");
  
    if (test_flags & TEST_SIGINT)
!     sigset(THR_KILL_SIGNAL,end_thread_signal);
!   sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!
  
    if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
    {
--- 1837,1847 ----
    DBUG_ENTER("init_signals");
  
    if (test_flags & TEST_SIGINT)
!   {
!     my_sigset(thd_lib_detected == THD_LIB_LT ? SIGINT : SIGUSR2,
!               end_thread_signal);
!   }
!   my_sigset(THR_SERVER_ALARM, print_signal_warning); // Should never be called!
  
    if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
    {
***************
*** 1877,1883 ****
  #endif
    (void) sigemptyset(&set);
  #ifdef THREAD_SPECIFIC_SIGPIPE
!   sigset(SIGPIPE,abort_thread);
    sigaddset(&set,SIGPIPE);
  #else
    (void) signal(SIGPIPE,SIG_IGN);		// Can't know which thread
--- 1876,1882 ----
  #endif
    (void) sigemptyset(&set);
  #ifdef THREAD_SPECIFIC_SIGPIPE
!   my_sigset(SIGPIPE, abort_thread);
    sigaddset(&set,SIGPIPE);
  #else
    (void) signal(SIGPIPE,SIG_IGN);		// Can't know which thread
***************
*** 2237,2244 ****
    MY_INIT(argv[0]);		// init my_sys library & pthreads
    tzset();			// Set tzname
  
    start_time=time((time_t*) 0);
- 
  #ifdef OS2
    {
      // fix timezone for daylight saving
--- 2236,2243 ----
    MY_INIT(argv[0]);		// init my_sys library & pthreads
    tzset();			// Set tzname
  
+   thd_lib_detected= get_thread_lib();
    start_time=time((time_t*) 0);
  #ifdef OS2
    {
      // fix timezone for daylight saving
***************
*** 5547,5552 ****
      (void) my_write(file, (byte*) buff, (uint) (end-buff),MYF(MY_WME));
      (void) my_close(file, MYF(0));
    }
  }
  
  
--- 5546,5567 ----
      (void) my_write(file, (byte*) buff, (uint) (end-buff),MYF(MY_WME));
      (void) my_close(file, MYF(0));
    }
+ }
+ 
+ 
+ static uint get_thread_lib(void)
+ {
+   char buff[64];
+     
+ #ifdef _CS_GNU_LIBPTHREAD_VERSION
+   confstr(_CS_GNU_LIBPTHREAD_VERSION, buff, sizeof(buff));
+ 
+   if (!strncasecmp(buff, "NPTL", 4))
+     return THD_LIB_NPTL;
+   else if (!strncasecmp(buff, "linuxthreads", 12))
+     return THD_LIB_LT;
+ #endif
+   return THD_LIB_OTHER;
  }