FIX: Trying to fix Exprtk compilation with MSCV

CMakeLists.txt

@@ -43,7 +43,8 @@ if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel" )
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -xHost" )
 elseif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC" ) 
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W0 /bigobj")
-    add_compile_options("-D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS")
+    add_compile_options("/D _SCL_SECURE_NO_WARNINGS")
+    add_compile_options("/D_CRT_SECURE_NO_WARNINGS")
 else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 endif()