From 9f8e6c06347d45a1a208651a81ca10445062af06 Mon Sep 17 00:00:00 2001
From: Erik Hofman <erik@ehofman.com>
Date: Thu, 23 Jan 2020 10:38:52 +0100
Subject: [PATCH] Make backwards compatible stubs so only a recompile without
 any modification is required.

---
 simgear/threads/CMakeLists.txt | 1 +
 simgear/threads/SGGuard.hxx    | 5 +++++
 simgear/threads/SGThread.hxx   | 5 +++++
 3 files changed, 11 insertions(+)
 create mode 100644 simgear/threads/SGGuard.hxx

diff --git a/simgear/threads/CMakeLists.txt b/simgear/threads/CMakeLists.txt
index 54ec3a7c..5258be8f 100644
--- a/simgear/threads/CMakeLists.txt
+++ b/simgear/threads/CMakeLists.txt
@@ -1,6 +1,7 @@
 include (SimGearComponent)
 
 set(HEADERS 
+    SGGuard.hxx
     SGQueue.hxx
     SGThread.hxx)
 
diff --git a/simgear/threads/SGGuard.hxx b/simgear/threads/SGGuard.hxx
new file mode 100644
index 00000000..1dc4bd2d
--- /dev/null
+++ b/simgear/threads/SGGuard.hxx
@@ -0,0 +1,5 @@
+#pragma once
+#pragma message(": warning<deprecated> use std::lock_guard and std::mutex.")
+
+// backwards compatibility, just needs a recompile
+#define SGGuard         std::lock_guard
diff --git a/simgear/threads/SGThread.hxx b/simgear/threads/SGThread.hxx
index ea1fa746..ba9f52d2 100644
--- a/simgear/threads/SGThread.hxx
+++ b/simgear/threads/SGThread.hxx
@@ -29,6 +29,11 @@
 #include <simgear/compiler.h>
 #include <simgear/timing/timestamp.hxx>
 
+
+// backwards compatibility, just needs a recompile
+#define SGMutex		std::mutex
+
+
 /**
  * Encapsulate generic threading methods.
  * Users derive a class from SGThread and implement the run() member function.