From 40b65a93981233c2420e8a4eb653add8c438b446 Mon Sep 17 00:00:00 2001
From: Kitsune Ral <Kitsune-Ral@users.sf.net>
Date: Wed, 19 Jul 2017 17:55:24 +0900
Subject: Restore compatibility with CMake versions below 3.3

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bca58b40..9254e029 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ endif()
 # Setup command line parameters for the compiler and linker
 CHECK_CXX_COMPILER_FLAG("-Wall" WALL_FLAG_SUPPORTED)
 if ( WALL_FLAG_SUPPORTED AND NOT CMAKE_CXX_FLAGS MATCHES "(^| )-Wall($| )")
-    string(APPEND CMAKE_CXX_FLAGS " -Wall")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 endif ( WALL_FLAG_SUPPORTED )
 
 if ( CMAKE_VERSION VERSION_LESS "3.1" )
-- 
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