From 5ed4d7b9dcd11bf2f37130812dbc34d951a73484 Mon Sep 17 00:00:00 2001
From: Valentin Bartenev <vbart@nginx.com>
Date: Wed, 25 Oct 2017 14:57:18 +0300
Subject: [PATCH] Avoiding compilation on systems with no working shared
 memory.

---
 src/nxt_port_memory.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/nxt_port_memory.c b/src/nxt_port_memory.c
index fa2ce449..71ab1d60 100644
--- a/src/nxt_port_memory.c
+++ b/src/nxt_port_memory.c
@@ -314,6 +314,10 @@ nxt_port_new_port_mmap(nxt_task_t *task, nxt_process_t *process,
                 nxt_errno);
     }
 
+#else
+
+#error No working shared memory implementation.
+
 #endif
 
     if (nxt_slow_path(ftruncate(fd, PORT_MMAP_SIZE) == -1)) {