From 300dc54dad6e13cd099b881075518822bd314a72 Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Fri, 15 Jan 2021 09:58:19 +0000
Subject: [PATCH] Add notes that libsystemd-dev or similar is needed.

This is when building with systemd support on Linux.

Closes #2019. Thanks to Mark Symmes.
---
 ChangeLog.txt       | 2 ++
 README-compiling.md | 1 +
 config.mk           | 2 ++
 3 files changed, 5 insertions(+)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index dbfe2afdad..509cd72c04 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -4,6 +4,8 @@ Broker:
 - Fix message expiry interval property not being honoured in
   `mosquitto_broker_publish` and `mosquitto_broker_publish_copy`.
 - Fix websockets listeners with TLS not responding. Closes #2020.
+- Add notes that libsystemd-dev or similar is needed if building with systemd
+  support. Closes #2019.
 
 
 2.0.5 - 2021-01-11
diff --git a/README-compiling.md b/README-compiling.md
index f3be9d9ab1..eb1b11dae4 100644
--- a/README-compiling.md
+++ b/README-compiling.md
@@ -7,6 +7,7 @@ are optional.
 * libwebsockets (optional, disabled by default, version 2.4 and above)
 * cJSON (optional but recommended, for dynamic-security plugin support, and
   JSON output from mosquitto_sub/mosquitto_rr)
+* libsystemd-dev (optional, if building with systemd support on Linux)
 * On Windows, a pthreads library is required if threading support is to be
   included.
 
diff --git a/config.mk b/config.mk
index 178c8baa94..73c2c6112d 100644
--- a/config.mk
+++ b/config.mk
@@ -59,6 +59,8 @@ WITH_SYS_TREE:=yes
 
 # Build with systemd support. If enabled, mosquitto will notify systemd after
 # initialization. See README in service/systemd/ for more information.
+# Setting to yes means the libsystemd-dev or similar package will need to be
+# installed.
 WITH_SYSTEMD:=no
 
 # Build with SRV lookup support.