diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3362ededa..0e35abd8b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -319,6 +319,8 @@ if(TRITON_BUILD_PYTHON_MODULE)
       LLVMPasses
       LLVMXPUCodeGen
       LLVMXPUAsmParser
+      LLVMXCNCodeGen
+      LLVMXCNAsmParser
     )
   endif()
 
diff --git a/README.md b/README.md
index 306f775cf..066e64f6c 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,9 @@ python3 -m pip install . --no-build-isolation -v
 ```shell
 # xpu (klx)
 # Recommended: Use the Docker image (22GB) https://su.bcebos.com/klx-sdk-release-public/xpytorch/docker/ubuntu2004_v030/ubuntu_2004_x86_64_v30.tar
+# Contact kunlunxin-support@baidu.com for support
 mkdir -p ~/.flagtree/xpu; cd ~/.flagtree/xpu
-wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar
+wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar.gz
 wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/xre-Linux-x86_64.tar.gz
 cd ${YOUR_CODE_DIR}/flagtree/python
 export FLAGTREE_BACKEND=xpu
diff --git a/README_cn.md b/README_cn.md
index 72d5e2acd..aa8c10403 100644
--- a/README_cn.md
+++ b/README_cn.md
@@ -35,8 +35,9 @@ python3 -m pip install . --no-build-isolation -v
 ```shell
 # xpu (klx)
 # 推荐使用镜像（22GB）https://su.bcebos.com/klx-sdk-release-public/xpytorch/docker/ubuntu2004_v030/ubuntu_2004_x86_64_v30.tar
+# 联系 kunlunxin-support@baidu.com 可获取进一步支持
 mkdir -p ~/.flagtree/xpu; cd ~/.flagtree/xpu
-wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar
+wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar.gz
 wget https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/xre-Linux-x86_64.tar.gz
 cd ${YOUR_CODE_DIR}/flagtree/python
 export FLAGTREE_BACKEND=xpu
diff --git a/python/setup_helper.py b/python/setup_helper.py
index 12f134973..51780605a 100644
--- a/python/setup_helper.py
+++ b/python/setup_helper.py
@@ -338,7 +338,7 @@ def check_env(env_val):
 cache.store(
     file="XTDK-llvm19-ubuntu2004_x86_64",
     condition=("xpu" == flagtree_backend),
-    url="https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar",
+    url="https://github.com/FlagTree/flagtree/releases/download/v0.1.0-build-deps/XTDK-llvm19-ubuntu2004_x86_64.tar.gz",
     pre_hock=lambda: check_env('LLVM_BUILD_DIR'),
     post_hock=set_llvm_env,
 )