diff --git a/cmake/cross_compiling/ios.cmake b/cmake/cross_compiling/ios.cmake
index 76f62765aff791594123d689341b0876b3d0184d..0597ef0cc4ba4c0bcec172c767d66d0f362e1459 100644
--- a/cmake/cross_compiling/ios.cmake
+++ b/cmake/cross_compiling/ios.cmake
@@ -120,6 +120,7 @@
 #
 
 ## Lite settings
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
 if (ARM_TARGET_OS STREQUAL "ios")
   set(PLATFORM "OS")
 elseif(ARM_TARGET_OS STREQUAL "ios64")