diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000000000000000000000000000000000..d614d04decf11e712cd538a45fc5f197fc004da7
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+llvm-19.1.7.tar.gz.aa filter=lfs diff=lfs merge=lfs -text
+llvm-19.1.7.tar.gz.ab filter=lfs diff=lfs merge=lfs -text
+llvm-19.1.7.tar.gz.ac filter=lfs diff=lfs merge=lfs -text
+llvm-19.1.7.tar.gz.ad filter=lfs diff=lfs merge=lfs -text
diff --git a/llvm-19.1.7.tar.gz.aa b/llvm-19.1.7.tar.gz.aa
new file mode 100644
index 0000000000000000000000000000000000000000..6cd75546a74260db1586be10f7c2602133e315dc
--- /dev/null
+++ b/llvm-19.1.7.tar.gz.aa
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3dae36a25f12f73c7bb3e69dd00ca4c67698d0866f327af033484cca1f902639
+size 838860800
diff --git a/llvm-19.1.7.tar.gz.ab b/llvm-19.1.7.tar.gz.ab
new file mode 100644
index 0000000000000000000000000000000000000000..ce407803f121716ba52b1aac09257c9478ee192a
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+++ b/llvm-19.1.7.tar.gz.ab
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e357f1e90193e823371947eb77ad0676a066edd3b21b575f6a64e3e6f6c33337
+size 838860800
diff --git a/llvm-19.1.7.tar.gz.ac b/llvm-19.1.7.tar.gz.ac
new file mode 100644
index 0000000000000000000000000000000000000000..7fa27984a4a1936e66229855ee38d1c45c9f73ea
--- /dev/null
+++ b/llvm-19.1.7.tar.gz.ac
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 838860800
diff --git a/llvm-19.1.7.tar.gz.ad b/llvm-19.1.7.tar.gz.ad
new file mode 100644
index 0000000000000000000000000000000000000000..c60785185a7de3dd35540554d20c9de7b2324fe0
--- /dev/null
+++ b/llvm-19.1.7.tar.gz.ad
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc9a1d06b3470e373bed82da37509b717534c29bc36f3c66ee30479c589cf6cb
+size 28966004
diff --git a/toolchain.sh b/toolchain.sh
new file mode 100755
index 0000000000000000000000000000000000000000..1bdc1baffa44181f65361af650ec98a8c9414a57
--- /dev/null
+++ b/toolchain.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Copyright (c) Huawei Technologies Co., Ltd. 2020-2030. All rights reserved.
+set -e
+
+while getopts "o:i:l:t:h" arg
+do
+    case "${arg}" in
+        "o")
+            OUT_DIR=${OPTARG}
+            ;;
+        "i")
+            SOURCE_DIR=${OPTARG}
+            ;;
+        "l")
+            TOOL_DIR=${OPTARG}
+            ;;
+        "h")
+            echo "help"
+            ;;
+        ?)
+            echo "unkonw argument"
+            exit 1
+            ;;
+    esac
+done
+
+
+ndk_dir=$(ls ${SOURCE_DIR}/lib/|more |grep ohos |grep -v mipsel |grep -v riscv |awk '{print $NF}')
+
+for i in $ndk_dir
+do
+	find ${OUT_DIR}/lib/$i -name 'libc++.a' -type f  -exec bash -c 'echo "INPUT(-lc++_static -lc++abi)" > $1' _ {}  \;
+	find ${OUT_DIR}/lib/$i -name 'libc++.so' -type f -exec bash -c 'echo "INPUT(-lc++_shared)" > $1'  _ {}  \;
+done
+
+cp -rfp ${SOURCE_DIR}/lib   ${OUT_DIR}
+cp -rfp ${SOURCE_DIR}/include  ${OUT_DIR}
+
+function strip_dir() {
+    for file in `ls $1`
+    do
+        if [ -f $1"/"$file ] && [[ $(file -b $1"/"$file) =~ "shared object" ]]
+        then
+            echo $1"/"$file
+            ${TOOL_DIR}/llvm-strip $1"/"$file
+        elif [ -d $1"/"$file ]
+        then
+            strip_dir $1"/"$file
+        fi
+    done
+}
+function remove_unnecessary_file {
+    file_list=("bin/llvm-ifs" "bin/llvm-ifs.exe" "lib/clang/current" "lib/arm-liteos-ohos" "lib/loongarch64-linux-ohos" "lib/mipsel-linux-ohos" "lib/riscv64-linux-ohos" "lib/clang/15.0.4/bin/loongarch64-linux-ohos" "lib/clang/15.0.4/lib/arm-liteos-ohos" "lib/clang/15.0.4/lib/i386-unknown-linux-gnu" "lib/clang/15.0.4/lib/loongarch64-linux-ohos" "lib/clang/15.0.4/lib/mipsel-linux-ohos" "lib/clang/15.0.4/lib/riscv64-linux-ohos" "lib/clang/15.0.4/lib/windows")
+
+    for i in "${file_list[@]}"; do
+        if [ -e "${OUT_DIR}/${i}" ]; then
+            rm -rf "${OUT_DIR}/${i}"
+        fi
+    done
+}
+remove_unnecessary_file
+strip_dir ${OUT_DIR}/lib