* [Build] BugFix: Correct CMake errors on Windows.

Tools/CMake/basics.cmake

@@ -400,17 +400,17 @@ set(TORQUE_STATIC ON)
 #option(TORQUE_STATIC "enables or disable static" OFF)
 
 if(WIN32)
-    set(TORQUE_CXX_FLAGS_EXECUTABLES "/wd4018 /wd4100 /wd4121 /wd4127 /wd4130 /wd4244 /wd4245 /wd4389 /wd4511 /wd4512 /wd4800 /wd4995 " CACHE STRING)
+    set(TORQUE_CXX_FLAGS_EXECUTABLES "/wd4018 /wd4100 /wd4121 /wd4127 /wd4130 /wd4244 /wd4245 /wd4389 /wd4511 /wd4512 /wd4800 /wd4995 " CACHE STRING "")
     mark_as_advanced(TORQUE_CXX_FLAGS_EXECUTABLES)
 
-    set(TORQUE_CXX_FLAGS_LIBS "/W0" CACHE STRING)
+    set(TORQUE_CXX_FLAGS_LIBS "/W0" CACHE STRING "")
     mark_as_advanced(TORQUE_CXX_FLAGS_LIBS)
 
     set(TORQUE_CXX_FLAGS_COMMON_DEFAULT "-DUNICODE -D_UNICODE -D_CRT_SECURE_NO_WARNINGS /MP /O2 /Ob2 /Oi /Ot /Oy /GT /Zi /W4 /nologo /GF /EHsc /GS- /Gy- /Qpar- /fp:precise /fp:except- /GR /Zc:wchar_t-" )
     if( TORQUE_CPU_X32 )
        set(TORQUE_CXX_FLAGS_COMMON_DEFAULT "${TORQUE_CXX_FLAGS_COMMON_DEFAULT} /arch:SSE2")
     endif()
-    set(TORQUE_CXX_FLAGS_COMMON ${TORQUE_CXX_FLAGS_COMMON_DEFAULT} CACHE STRING)
+    set(TORQUE_CXX_FLAGS_COMMON ${TORQUE_CXX_FLAGS_COMMON_DEFAULT} CACHE STRING "")
 
     mark_as_advanced(TORQUE_CXX_FLAGS_COMMON)