make: unifdef SUN5_0 (defined)

*** 39,49 ****
  
  extern SIG_PF
  bsd_signal (int Signal, SIG_PF Handler)
  {
    auto SIG_PF                   previous_handler;
- #ifdef SUN5_0
  #ifdef sun
    previous_handler = sigset (Signal, Handler);
  #else
    auto struct sigaction         new_action;
    auto struct sigaction         old_action;
--- 39,48 ----
*** 55,69 ****
  
    (void) sigaction (Signal, &new_action, &old_action);
  
    previous_handler = (SIG_PF) old_action.sa_handler;
  #endif
- #elif defined(linux)
-   previous_handler = sigset (Signal, Handler);
- #else
-   previous_handler = signal (Signal, Handler);
- #endif
    return previous_handler;
  }
  
  extern void
  bsd_signals (void)
--- 54,63 ----
*** 71,178 ****
    static int                    initialized = 0;
  
    if (initialized == 0)
      {
        initialized = 1;
- #if !defined(SUN5_0) && !defined(linux)
- #if defined(SIGHUP)
-       (void) bsd_signal (SIGHUP, SIG_DFL);
- #endif
- #if defined(SIGINT)
-       (void) bsd_signal (SIGINT, SIG_DFL);
- #endif
- #if defined(SIGQUIT)
-       (void) bsd_signal (SIGQUIT, SIG_DFL);
- #endif
- #if defined(SIGILL)
-       (void) bsd_signal (SIGILL, SIG_DFL);
- #endif
- #if defined(SIGTRAP)
-       (void) bsd_signal (SIGTRAP, SIG_DFL);
- #endif
- #if defined(SIGIOT)
-       (void) bsd_signal (SIGIOT, SIG_DFL);
- #endif
- #if defined(SIGABRT)
-       (void) bsd_signal (SIGABRT, SIG_DFL);
- #endif
- #if defined(SIGEMT)
-       (void) bsd_signal (SIGEMT, SIG_DFL);
- #endif
- #if defined(SIGFPE)
-       (void) bsd_signal (SIGFPE, SIG_DFL);
- #endif
- #if defined(SIGBUS)
-       (void) bsd_signal (SIGBUS, SIG_DFL);
- #endif
- #if defined(SIGSEGV)
-       (void) bsd_signal (SIGSEGV, SIG_DFL);
- #endif
- #if defined(SIGSYS)
-       (void) bsd_signal (SIGSYS, SIG_DFL);
- #endif
- #if defined(SIGPIPE)
-       (void) bsd_signal (SIGPIPE, SIG_DFL);
- #endif
- #if defined(SIGALRM)
-       (void) bsd_signal (SIGALRM, SIG_DFL);
- #endif
- #if defined(SIGTERM)
-       (void) bsd_signal (SIGTERM, SIG_DFL);
- #endif
- #if defined(SIGUSR1)
-       (void) bsd_signal (SIGUSR1, SIG_DFL);
- #endif
- #if defined(SIGUSR2)
-       (void) bsd_signal (SIGUSR2, SIG_DFL);
- #endif
- #if defined(SIGCLD)
-       (void) bsd_signal (SIGCLD, SIG_DFL);
- #endif
- #if defined(SIGCHLD)
-       (void) bsd_signal (SIGCHLD, SIG_DFL);
- #endif
- #if defined(SIGPWR)
-       (void) bsd_signal (SIGPWR, SIG_DFL);
- #endif
- #if defined(SIGWINCH)
-       (void) bsd_signal (SIGWINCH, SIG_DFL);
- #endif
- #if defined(SIGURG)
-       (void) bsd_signal (SIGURG, SIG_DFL);
- #endif
- #if defined(SIGIO)
-       (void) bsd_signal (SIGIO, SIG_DFL);
- #else
- #if defined(SIGPOLL)
-       (void) bsd_signal (SIGPOLL, SIG_DFL);
- #endif
- #endif
- #if defined(SIGTSTP)
-       (void) bsd_signal (SIGTSTP, SIG_DFL);
- #endif
- #if defined(SIGCONT)
-       (void) bsd_signal (SIGCONT, SIG_DFL);
- #endif
- #if defined(SIGTTIN)
-       (void) bsd_signal (SIGTTIN, SIG_DFL);
- #endif
- #if defined(SIGTTOU)
-       (void) bsd_signal (SIGTTOU, SIG_DFL);
- #endif
- #if defined(SIGVTALRM)
-       (void) bsd_signal (SIGVTALRM, SIG_DFL);
- #endif
- #if defined(SIGPROF)
-       (void) bsd_signal (SIGPROF, SIG_DFL);
- #endif
- #if defined(SIGXCPU)
-       (void) bsd_signal (SIGXCPU, SIG_DFL);
- #endif
- #if defined(SIGXFSZ)
-       (void) bsd_signal (SIGXFSZ, SIG_DFL);
- #endif
- #endif
      }
  
    return;
  }
--- 65,73 ----