--- make-3.81/main.c

+++ make-3.81/main.c

@@ -1641,6 +1641,21 @@ main (int argc, char **argv, char **envp)

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

       job_slots = 1;

     }

+#else

+# if defined(PIPE_BUF)

+#  define MAX_JOB_SLOTS PIPE_BUF

+# elif defined(_POSIX_PIPE_BUF)

+#  define MAX_JOB_SLOTS _POSIX_PIPE_BUF

+# else

+#  define MAX_JOB_SLOTS 512

+# endif

+  if (job_slots > MAX_JOB_SLOTS)

+    {

+      error (NILF,

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

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

+      job_slots = 1;

+    }

 #endif

 #ifdef MAKE_JOBSERVER