Fix warnings

CMakeLists.txt

@@ -19,9 +19,10 @@ SET_OUTPUT_DIRECTORY(${CMAKE_BINARY_DIR})
 DOTNET_REGISTER_LOCAL_REPOSITORY("Graph Engine OSS Local" "${CMAKE_BINARY_DIR}")
 
 IF(WIN32)
-    ADD_COMPILE_OPTIONS(/volatile:iso /EHsc /fp:except- /Zi /Gy /W3 /nologo /MP)
+    ADD_COMPILE_OPTIONS(/volatile:iso /EHsc /fp:except- /Zi /Gy /W3 /nologo /MP /utf-8)
     SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /DEBUG:FULL")
     SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DEBUG:FULL")
+    ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)
 ELSEIF(UNIX)
     ADD_COMPILE_OPTIONS(-fpermissive -Wall -Wno-write-strings -Wno-unknown-pragmas -pthread)
 ELSE()