diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000000000000000000000000000000000..05a0e946187b8160d0c54c23a9f8100f44e0f43b
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.xz filter=lfs diff=lfs merge=lfs -text
diff --git a/.lfsconfig b/.lfsconfig
new file mode 100644
index 0000000000000000000000000000000000000000..2125572c7b1644b2702de7dcc156b597934371cf
--- /dev/null
+++ b/.lfsconfig
@@ -0,0 +1,2 @@
+[lfs]
+	url = https://artlfs.openeuler.openatom.cn/src-openEuler/llvm-bolt
diff --git a/llvm-bolt.spec b/llvm-bolt.spec
index d83d218f9292d6c26303cacd0ae11422196535d9..feabd280afc47216637af501c6d12f16d6be0575 100644
--- a/llvm-bolt.spec
+++ b/llvm-bolt.spec
@@ -1,6 +1,6 @@
 %bcond_without sys_llvm
 %bcond_with check
-%bcond_with toolchain_clang
+%bcond_without toolchain_clang
 
 %if %{with toolchain_clang}
 %global toolchain clang
@@ -27,7 +27,7 @@
 
 Name:           %{pkg_name}
 Version:        %{bolt_version}
-Release:        3
+Release:        4
 Summary:        BOLT is a post-link optimizer developed to speed up large applications
 License:        Apache-2.0
 URL:            https://github.com/llvm/llvm-project/tree/main/bolt
@@ -146,8 +146,10 @@ rm -f %{buildroot}/%{_builddir}/%{bolt_srcdir}/%{__cmake_builddir}/%{_lib}/lib*.
 %files doc
 %doc %{install_docdir}
 
-
 %changelog
+* Mon Dec 09 2024 Funda Wang <fundawang@yeah.net> - 17.0.6-4
+- build with clang
+
 * Tue Nov 12 2024 Funda Wang <fundawang@yeah.net> - 17.0.6-3
 - adopt to new cmake macro
 - build with gcc now, as llvm/clang will produce linking error
diff --git a/llvm-project-17.0.6.src.tar.xz b/llvm-project-17.0.6.src.tar.xz
index cdcb13184e9bf3d86998f2e0f937d3a6e15da999..9a7fe059772df27d4d1f353636990ff8a8f33c4f 100644
Binary files a/llvm-project-17.0.6.src.tar.xz and b/llvm-project-17.0.6.src.tar.xz differ