cmake: check compiler version before adding -Wno-misleading-indentation flag

Signed-off-by: Mihai Tudor Panu <[email protected]>

Author: Propanu

CMakeLists.txt

@@ -91,13 +91,16 @@ endfunction ()
 
 # Compiler flags common to both C and CXX
 # Enable -Wall
-# GCC-6 added -Wmisleading-indentation to -Wall, skip these for now
 set (C_CXX_WARNING_FLAGS -Wall
-    -Wno-misleading-indentation
     -Wno-strict-aliasing
     -Wno-deprecated-declarations # Temp fix for MRAA deprecated methods
     )
 
+# GCC-6 added -Wmisleading-indentation to -Wall, skip these for now
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "6")
+  list (APPEND C_CXX_WARNING_FLAGS -Wno-misleading-indentation)
+endif ()
+
 # Warnings as errors?
 if (WERROR)
   list (APPEND C_CXX_WARNING_FLAGS -Werror)