diff -rupN openldap-2.5.14/libraries/liblmdb/mdb.c openldap-2.5.14_patched/libraries/liblmdb/mdb.c
--- openldap-2.5.14/libraries/liblmdb/mdb.c	2023-02-09 02:49:18.000000000 +0800
+++ openldap-2.5.14_patched/libraries/liblmdb/mdb.c	2023-07-04 09:38:15.237980454 +0800
@@ -108,7 +108,7 @@ typedef SSIZE_T	ssize_t;
 #include <unistd.h>
 #endif
 
-#if defined(__sun) || defined(ANDROID)
+#if defined(__sun) || defined(ANDROID) || defined(__OHOS__)
 /* Most platforms have posix_memalign, older may only have memalign */
 #define HAVE_MEMALIGN	1
 #include <malloc.h>
@@ -131,6 +131,8 @@ typedef SSIZE_T	ssize_t;
 # define MDB_FDATASYNC		fsync
 #elif defined(ANDROID)
 # define MDB_FDATASYNC		fsync
+#elif defined(__OHOS__)
+# define MDB_FDATASYNC		fsync
 #endif
 
 #ifndef _WIN32
@@ -268,7 +270,7 @@ typedef SSIZE_T	ssize_t;
  */
 #ifndef MDB_USE_ROBUST
 /* Android currently lacks Robust Mutex support. So does glibc < 2.4. */
-# if defined(MDB_USE_POSIX_MUTEX) && (defined(ANDROID) || \
+# if defined(MDB_USE_POSIX_MUTEX) && (defined(ANDROID) || (defined(__OHOS__)) || \
 	(defined(__GLIBC__) && GLIBC_VER < 0x020004))
 #  define MDB_USE_ROBUST	0
 # else