--- make-4.2.1/job.c	2016-05-21 21:22:32.000000000 +0100
+++ make-4.2.1.1/job.c	2016-10-09 19:12:07.425523927 +0100
@@ -1925,10 +1925,60 @@
 static int
 load_too_high (void)
 {
 #if defined(__MSDOS__) || defined(VMS) || defined(_AMIGA) || defined(__riscos__)
   return 1;
+#elif defined(HAVE_PROC_LOADAVG)
+  /* Read from /proc/loadavg and use the number of active running
+     tasks & threads to determine if we can start another process. */
+#define PROC_LOADAVG_SIZE 64
+  static int fd = -2;
+  char proc_loadavg[PROC_LOADAVG_SIZE];
+  int i, p;
+
+  if (max_load_average < 0)
+    return 0;
+
+  if (fd == -2)
+    {
+      fd = open ("/proc/loadavg", O_RDONLY);
+      if (fd < 0)
+	{
+	  perror_with_name (_("cannot open /proc/loadavg: "), "open");
+	  fd = -1;
+	  return 0;
+	}
+    }
+  if (read (fd, proc_loadavg, PROC_LOADAVG_SIZE) < 0)
+    {
+      perror_with_name (_("cannot read /proc/loadavg: "), "read");
+      close(fd);
+      fd = -1;
+      return 0;
+    }
+  if (lseek (fd, 0, SEEK_SET) < 0)
+    {
+      perror_with_name (_("cannot seek on /proc/loadavg: "), "lseek");
+      close(fd);
+      fd = -1;
+      return 0;
+    }
+  proc_loadavg[PROC_LOADAVG_SIZE-1] = '\0';
+  for (i = p = 0; i < 3 && p < PROC_LOADAVG_SIZE; ++p)
+    {
+      if (proc_loadavg[p] == ' ')
+	++i;
+    }
+  if (i < 3)
+    {
+      errno = ENOTSUP;
+      perror_with_name (_("unsupported format of /proc/loadavg: "), "load_too_high");
+      close (fd);
+      fd = -1;
+      return 0;
+    }
+  return max_load_average < (double) atoi (&proc_loadavg[p]);
 #else
   static double last_sec;
   static time_t last_now;
   double load, guess;
   time_t now;