under test, not sure no errors

core/CMakeLists.txt

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+# Copyright 2026 The xLLM Authors. All Rights Reserved.
+# Commit: 494f293b5629 · feat · PR #2260  (adapted for Iluvatar BI-V100)
+
+cmake_minimum_required(VERSION 3.18)
+
+# ---------- layerwise split KV cache library ----------
+add_library(layerwise_split_kv STATIC
+  framework/kv_cache/kv_cache_layerwise.cpp
+  framework/kv_cache/kv_cache_estimation_layerwise.cpp
+  framework/parallel_state/mapping_ilu.cpp
+  distributed_runtime/layerwise_split_engine_ext.cpp
+  distributed_runtime/layerwise_split_master.cpp
+  runtime/worker_layerwise_init.cpp
+  config/parallel_config_layerwise.cpp
+)
+
+target_include_directories(layerwise_split_kv PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/..
+  ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(layerwise_split_kv PUBLIC
+  gflags
+  glog::glog
+  torch
+)
+
+# Iluvatar BI-V100 build: define USE_ILU
+if(USE_ILU)
+  target_compile_definitions(layerwise_split_kv PUBLIC USE_ILU)
+endif()
+
+# ---------- tests ----------
+if(BUILD_TESTING)
+  add_executable(test_layerwise_split
+    ${CMAKE_CURRENT_SOURCE_DIR}/../tests/core/test_layerwise_split_kv_cache.cpp
+  )
+  target_link_libraries(test_layerwise_split PRIVATE
+    layerwise_split_kv
+    GTest::gtest_main
+    gflags
+    glog::glog
+  )
+  add_test(NAME LayerwiseSplitKVTests COMMAND test_layerwise_split)
+endif()