diff --git a/src/kernel/CMakeLists.txt b/src/kernel/CMakeLists.txt
index f30ccce388a..244f0098fdf 100644
--- a/src/kernel/CMakeLists.txt
+++ b/src/kernel/CMakeLists.txt
@@ -83,9 +83,25 @@ add_library(bitcoinkernel
   $<TARGET_OBJECTS:leveldb>
   $<TARGET_OBJECTS:crc32c>
 )
+
+# Compiler warnings that apply only to the kernel and its dependencies.
+# These can be more strict and/or warnings that only apply to shared
+# libs.
+add_library(kernel_warn_interface INTERFACE)
+if(NOT MSVC)
+  try_append_cxx_flags("-Wunique-object-duplication" TARGET kernel_warn_interface SKIP_LINK)
+endif()
+
+# Also manually apply the warnings to the kernel's internal dependencies
+target_link_libraries(bitcoin_clientversion PRIVATE kernel_warn_interface)
+target_link_libraries(bitcoin_crypto PRIVATE kernel_warn_interface)
+target_link_libraries(leveldb PRIVATE kernel_warn_interface)
+target_link_libraries(crc32c PRIVATE kernel_warn_interface)
+
 target_link_libraries(bitcoinkernel
   PRIVATE
     core_interface
+    kernel_warn_interface
     secp256k1_objs
     $<$<PLATFORM_ID:Windows>:bcrypt>
     $<TARGET_NAME_IF_EXISTS:USDT::headers>