diff --git a/lldb/cmake/modules/LLDBConfig.cmake b/lldb/cmake/modules/LLDBConfig.cmake
index 2a709f81981ff..5e45eb559d2de 100644
--- a/lldb/cmake/modules/LLDBConfig.cmake
+++ b/lldb/cmake/modules/LLDBConfig.cmake
@@ -365,9 +365,15 @@ endif ()
 
 check_cxx_compiler_flag("-Wno-gnu-anonymous-struct"
                         CXX_SUPPORTS_NO_GNU_ANONYMOUS_STRUCT)
+if (CXX_SUPPORTS_NO_GNU_ANONYMOUS_STRUCT)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-gnu-anonymous-struct")
+endif ()
 
 check_cxx_compiler_flag("-Wno-nested-anon-types"
                         CXX_SUPPORTS_NO_NESTED_ANON_TYPES)
+if (CXX_SUPPORTS_NO_NESTED_ANON_TYPES)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types")
+endif ()
 
 # Disable MSVC warnings
 if( MSVC )