ENH: ignore C4305 warning

Change-Id: I291d7e9686a85b38bcbb75875abd766af36a681d
(cherry picked from commit 1de5069bd09599f693dbe37a627fa93d5dcfae74)

CMakeLists.txt

@@ -279,6 +279,11 @@ if (APPLE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=partial-availability -Werror=unguarded-availability -Werror=unguarded-availability-new")
 endif ()
 
+if(MSVC)
+# 添加编译选项，忽略警告 C4305 （格式转换截断）
+add_compile_options(/wd4305)
+endif()
+
 # Where all the bundled libraries reside?
 set(LIBDIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
 set(LIBDIR_BIN ${CMAKE_CURRENT_BINARY_DIR}/src)