diff -Nrup a/main.c b/main.c

--- a/main.c	2016-05-31 03:17:26.000000000 -0400

+++ b/main.c	2017-06-08 22:55:47.632288750 -0400

@@ -2051,6 +2051,21 @@ main (int argc, char **argv, char **envp

     }

 #endif

+#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

+    {

+      O (error, NILF,

+            _("More parallel jobs (-jN) than this platform can handle requested."));

+      O (error, NILF, _("Resetting to single job (-j1) mode."));

+      job_slots = 1;

+    }

+

+

   /* If we have >1 slot at this point, then we're a top-level make.

      Set up the jobserver.