diff --git a/libcxx/cmake/config-ix.cmake b/libcxx/cmake/config-ix.cmake
--- a/libcxx/cmake/config-ix.cmake
+++ b/libcxx/cmake/config-ix.cmake
@@ -118,6 +118,8 @@
   set(LIBCXX_HAS_M_LIB NO)
   set(LIBCXX_HAS_RT_LIB NO)
   set(LIBCXX_HAS_ATOMIC_LIB NO)
+elseif(OHOS)
+  set(LIBCXX_HAS_ATOMIC_LIB NO)
 elseif(FUCHSIA)
   set(LIBCXX_HAS_M_LIB NO)
   set(LIBCXX_HAS_PTHREAD_LIB NO)
diff --git a/libcxx/include/__config b/libcxx/include/__config
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -932,7 +932,8 @@
         defined(__sun__) ||                                                                                            \
         defined(__MVS__) ||                                                                                            \
         defined(_AIX) ||                                                                                               \
-        defined(__EMSCRIPTEN__)
+        defined(__EMSCRIPTEN__) ||                                                                                     \
+        defined(__OHOS_FAMILY__)
 // clang-format on
 #      define _LIBCPP_HAS_THREAD_API_PTHREAD
 #    elif defined(__Fuchsia__)
@@ -1010,7 +1011,7 @@
 #  endif
 
 #  if defined(__BIONIC__) || defined(__NuttX__) || defined(__Fuchsia__) || defined(__wasi__) ||                        \
-      defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__)
+      defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__) || defined(__OHOS_FAMILY__)
 #    define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
 #  endif
 
diff --git a/libcxx/include/__locale b/libcxx/include/__locale
--- a/libcxx/include/__locale
+++ b/libcxx/include/__locale
@@ -42,6 +42,9 @@
 #elif defined(__wasi__)
 // WASI libc uses musl's locales support.
 # include <__support/musl/xlocale.h>
+#elif defined(__OHOS_FAMILY__)
+// LiteOS libc uses musl's locales support.
+# include <__support/musl/xlocale.h>
 #elif defined(_LIBCPP_HAS_MUSL_LIBC)
 # include <__support/musl/xlocale.h>
 #endif
diff --git a/libcxx/src/include/config_elast.h b/libcxx/src/include/config_elast.h
--- a/libcxx/src/include/config_elast.h
+++ b/libcxx/src/include/config_elast.h
@@ -29,6 +29,8 @@
 // No _LIBCPP_ELAST needed on Fuchsia
 #elif defined(__wasi__)
 // No _LIBCPP_ELAST needed on WASI
+#elif defined(__OHOS_FAMILY__)
+// No _LIBCPP_ELAST needed on OHOS
 #elif defined(__EMSCRIPTEN__)
 // No _LIBCPP_ELAST needed on Emscripten
 #elif defined(__linux__) || defined(_LIBCPP_HAS_MUSL_LIBC)