From 1558ca2bb5e6ae00149d633217eb5404129b308b Mon Sep 17 00:00:00 2001
From: Erik Frojdh <erik.frojdh@gmail.com>
Date: Wed, 3 Apr 2019 15:21:11 +0200
Subject: [PATCH] version check of compiler

---
 CMakeLists.txt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a947fc38..e66855e53 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,6 @@ target_compile_options(slsProjectWarnings INTERFACE
                                             -Wall
                                             -Wnon-virtual-dtor
                                             -Woverloaded-virtual
-                                            -Wnull-dereference 
                                             -Wdouble-promotion
                                             -Wformat=2
                                  )
@@ -73,8 +72,13 @@ elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
     target_compile_options(slsProjectWarnings INTERFACE 
                                                 -Wno-misleading-indentation # mostly in rapidjson remove using clang format
                                                 -Wno-class-memaccess        # also in rapidjson
-                                                -Wduplicated-cond
                                                 )
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0)
+        target_compile_options(slsProjectWarnings INTERFACE 
+                                                -Wduplicated-cond
+                                                -Wnull-dereference )
+
+    endif()
 endif()