--- libevent.cmake	2022-09-14 00:15:16.000000000 +0800
+++ mysql-8.0.31/cmake/libevent.cmake	2023-03-14 23:39:19.898170151 +0800
@@ -52,7 +52,6 @@
   UNSET(LIBEVENT_PTHREADS)
   UNSET(LIBEVENT_PTHREADS CACHE)
 ENDMACRO()
-
 MACRO(FIND_LIBEVENT_VERSION)
   SET(TEST_SRC
     "#include <event.h>
@@ -78,7 +77,10 @@
   # MESSAGE(STATUS "TRY_EVENT COMPILE_TEST_RESULT is ${COMPILE_TEST_RESULT}")
   # MESSAGE(STATUS "TRY_EVENT COMPILE_OUTPUT_VARIABLE is ${OUTPUT}")
   # MESSAGE(STATUS "TRY_EVENT RUN_OUTPUT_VARIABLE is ${RUN_OUTPUT}")
-
+  MESSAGE(STATUS "RUN_OUTPUT MESSAGE  is ${RUN_OUTPUT}")  
+  IF(RUN_OUTPUT MATCHES   "error while loading shared libraries: libjemalloc.so.2")
+    MESSAGE(WARNING  "malloc lib file not found  need export LD_PRELOAD=libpath/libjemalloc.so.2")
+  ENDIF()
   IF(COMPILE_TEST_RESULT)
     SET(LIBEVENT_VERSION_STRING "${RUN_OUTPUT}")
     STRING(REGEX REPLACE