--- make-3.80/main.c.jj	2002-08-09 21:27:17.000000000 -0400
+++ make-3.80/main.c	2004-12-13 12:48:25.000000000 -0500
@@ -1549,6 +1549,20 @@ int main (int argc, char ** argv)
       }
   }
 
+#ifdef PIPE_BUF
+  if (job_slots > PIPE_BUF)
+#elif defined _POSIX_PIPE_BUF
+  if (job_slots > _POSIX_PIPE_BUF)
+#else
+  if (job_slots > 512)
+#endif
+    {
+      error (NILF,
+	     _("More parallel jobs (-jN) than this platform can handle requested."));
+      error (NILF, _("Resetting to single job (-j1) mode."));
+      job_slots = 1;
+    }
+
   /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
      Set up the pipe and install the fds option for our children.  */