diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50c5464bb0..1902f0e618 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,11 @@ set(CMAKE_C_VISIBILITY_PRESET hidden)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN ON)
 
+# Fixes warning ld: warning: ignoring duplicate libraries on Mac and Windows.
+if (POLICY CMP0156)
+  cmake_policy(SET CMP0156 NEW)
+endif()
+
 if (APPLE AND NOT ("${CMAKE_SYSTEM_NAME}" STREQUAL Android))
   # OBJC/OBJCXX are needed to skip m/mm files in Unity builds.
   # https://gitlab.kitware.com/cmake/cmake/-/issues/21963