diff --git a/build/cmake/functions.cmake b/build/cmake/functions.cmake
index c00c968bdb..f21a402b22 100644
--- a/build/cmake/functions.cmake
+++ b/build/cmake/functions.cmake
@@ -152,6 +152,15 @@ function(wx_set_common_target_properties target_name)
         )
     endif()
 
+    if(wxUSE_NO_RTTI)
+        if(MSVC)
+            target_compile_options(${target_name} PRIVATE "/GR-")
+        elseif(("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") OR ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang"))
+            target_compile_options(${target_name} PRIVATE "-fno-rtti")
+        endif()
+        target_compile_definitions(${target_name} PRIVATE "-DwxNO_RTTI")
+    endif()
+
     if(wxBUILD_LARGEFILE_SUPPORT)
         target_compile_definitions(${target_name} PUBLIC "-D_FILE_OFFSET_BITS=64")
     endif()
diff --git a/build/cmake/init.cmake b/build/cmake/init.cmake
index 4cb25f6af1..d5cdc1b75b 100644
--- a/build/cmake/init.cmake
+++ b/build/cmake/init.cmake
@@ -101,15 +101,6 @@ if(wxBUILD_COMPATIBILITY VERSION_LESS 3.1)
     set(WXWIN_COMPATIBILITY_3_0 ON)
 endif()
 
-if(wxUSE_NO_RTTI)
-    if(MSVC)
-        add_compile_options("/GR-")
-    elseif(("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") OR ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang"))
-        wx_string_append(CMAKE_CXX_FLAGS " -fno-rtti")
-    endif()
-    add_definitions("-DwxNO_RTTI")
-endif()
-
 # Build wxBUILD_FILE_ID used for config and setup path
 #TODO: build different id for WIN32
 set(wxBUILD_FILE_ID "${wxBUILD_TOOLKIT}${wxBUILD_WIDGETSET}-")