block xxhash warning of c4711 (#37442)

* block xxhash warning of c4711

* modify according to zhouwei's comment

* fix syntax error

cmake/external/xxhash.cmake

@@ -31,8 +31,12 @@ ENDIF()
 
 if (WIN32)
   set(XXHASH_LIBRARIES "${XXHASH_INSTALL_DIR}/lib/xxhash.lib")
+  set(XXHASH_CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4710 /wd4711")
+  set(XXHASH_CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4710 /wd4711")
 else()
   set(XXHASH_LIBRARIES "${XXHASH_INSTALL_DIR}/lib/libxxhash.a")
+  set(XXHASH_CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
+  set(XXHASH_CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
 endif ()
 
 if(WIN32)
@@ -55,6 +59,12 @@ if(WIN32)
                       -DCMAKE_GENERATOR=${CMAKE_GENERATOR}
                       -DCMAKE_GENERATOR_PLATFORM=${CMAKE_GENERATOR_PLATFORM}
                       -DBUILD_SHARED_LIBS=OFF
+                      -DCMAKE_CXX_FLAGS=${XXHASH_CMAKE_CXX_FLAGS}
+                      -DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
+                      -DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}
+                      -DCMAKE_C_FLAGS=${XXHASH_CMAKE_C_FLAGS}
+                      -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+                      -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
                       ${OPTIONAL_CACHE_ARGS}
       TEST_COMMAND      ""
       BUILD_BYPRODUCTS ${XXHASH_LIBRARIES}