diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a72e76e43e6..60ca3796a47 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -56,3 +56,24 @@ endforeach()
 set(CMAKE_EXPORT_COMPILE_COMMANDS OFF)
 add_subdirectory(secp256k1)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+# Stable, backwards-compatible consensus functionality.
+add_library(bitcoin_consensus STATIC EXCLUDE_FROM_ALL
+  arith_uint256.cpp
+  consensus/merkle.cpp
+  consensus/tx_check.cpp
+  hash.cpp
+  primitives/block.cpp
+  primitives/transaction.cpp
+  pubkey.cpp
+  script/interpreter.cpp
+  script/script.cpp
+  script/script_error.cpp
+  uint256.cpp
+)
+target_link_libraries(bitcoin_consensus
+  PRIVATE
+    core_interface
+    bitcoin_crypto
+    secp256k1
+)