diff --git a/.gitignore b/.gitignore
index 57578ab42..e1fe789da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .*/
 !.github/
 build/
+externals/
 compile_commands.json
diff --git a/scripts/compile.sh b/scripts/compile.sh
index 51b90a7bc..f897eede6 100755
--- a/scripts/compile.sh
+++ b/scripts/compile.sh
@@ -2,27 +2,142 @@
 
 repo=intel/graph-compiler
 
+# Uncomment for script debug
+# set -ex
+
+function print_usage() {
+    echo "Usage:"
+    echo "$0 "
+    echo "    [ -d | --dev  ] Dev build, build LLVM in current env and place all to 'external' dir"
+    echo "    [ -l | --dyn  ] Dynamical linking, requires rebuild of LLVM, activates 'dev' option"
+    echo "    [ -h | --help ] Print this message"
+}
+
+args=$(getopt -a -o dlh --long dev,dyn,help -- "$@")
+if [[ $? -gt 0 ]]; then
+    echo "first"
+    print_usage
+fi
+
+DEV_BUILD=false
+DYN_LINK=false
+eval set -- ${args}
+while :
+do
+    case $1 in
+        -d | --dev)   
+            DEV_BUILD=true 
+            shift   ;;
+        -l | --dyn)
+            DEV_BUILD=true 
+            DYN_LINK=true 
+            shift   ;;
+        -h | --help)
+            echo "in help"    
+            print_usage
+            shift   ;;
+        # -- means the end of the arguments; drop this, and break out of the while loop
+        --) shift; break ;;
+        *) >&2 echo Unsupported option: $1
+            echo "in unsup"
+            print_usage ;;
+    esac
+done
+
 cd $(dirname "$0")/..
-llvm_dir=$(cd ..; pwd -P)/install/llvm
+project_dir=$PWD
 llvm_hash=$(cat cmake/llvm-version.txt)
 
-get_llvm() (
+function load_llvm() {
+    local  mlir_dir=$1
     local run_id
 
     run_id=$(gh run list -w "LLVM Build" --repo $repo --json databaseId --jq '.[0].databaseId')
 
     gh run download "$run_id" \
-       --repo "$repo" \
-       --pattern "llvm-$llvm_hash" \
-       --dir "$llvm_dir"
+        --repo "$repo" \
+        --pattern "llvm-$llvm_hash" \
+        --dir "$llvm_dir"
     cd "$llvm_dir"
     tar -zxf "llvm-$llvm_hash"/llvm.tgz
-)
 
-test -f "$llvm_dir/llvm-$llvm_hash"/llvm.tgz || get_llvm
+    eval $mlir_dir="$PWD/lib/cmake/mlir"
+    cd "$project_dir"
+    return 0
+}
+
+function build_llvm() {
+    local  mlir_dir=$1
+
+    if ! [ -d "llvm-project" ]; then
+        git clone https://github.com/llvm/llvm-project.git
+    fi
+
+    cd llvm-project
+    git checkout ${llvm_hash}
+
+    dylib=OFF
+    if [[ "$DYN_LINK" == 'true' ]]; then 
+        dylib=ON
+    fi
+
+    cmake -G Ninja llvm -B build \
+        -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=true \
+        -DLLVM_ENABLE_PROJECTS="mlir" -DLLVM_TARGETS_TO_BUILD="X86" \
+        -DLLVM_INSTALL_UTILS=true -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+        -DLLVM_INSTALL_GTEST=ON -DLLVM_BUILD_LLVM_DYLIB=$dylib -DLLVM_LINK_LLVM_DYLIB=$dylib
+    cmake --build build 
+
+    eval $mlir_dir="$PWD/build/lib/cmake/mlir"
+    cd ..
+    return 0
+}
+
+function get_llvm() {
+    local ret_val=$1
+
+    if [[ "$DEV_BUILD" == 'true' ]]; then
+        mkdir -p externals
+        cd externals
+        build_llvm val
+        eval $ret_val=\$val
+        cd ..
+        return 0
+    fi
+
+    llvm_dir=$project_dir/../install/llvm
+    if ! [ -f "$llvm_dir/llvm-$llvm_hash"/llvm.tgz ]; then
+        load_llvm val
+        eval $ret_val=\$val
+    fi
+    eval $ret_val="$llvm_dir/lib/cmake/mlir"
+    return 0
+}
+
+get_llvm mlir_dir
+
+fetch_dir=$project_dir/build/_deps
+dylib=OFF
+lit_path=""
+if [[ $(which lit) ]]; then
+    lit_path=$(which lit)
+fi
+if [[ "$DEV_BUILD" == 'true' ]]; then
+    fetch_dir=$project_dir/externals
+    lit_path=$project_dir/externals/llvm-project/build/bin/llvm-lit
+fi
+if [[ "$DYN_LINK" == 'true' ]]; then 
+    dylib=ON
+fi
+if [ -z "$lit_path" ]; then 
+    echo "========Warning======="
+    echo "   Lit not found.     "
+fi
 
 cmake -S . -G Ninja -B build \
     -DCMAKE_BUILD_TYPE=RelWithDebInfo \
-    -DMLIR_DIR=$llvm_dir/lib/cmake/mlir \
-    -DLLVM_EXTERNAL_LIT=$(which lit)
+    -DMLIR_DIR=$mlir_dir \
+    -DLLVM_EXTERNAL_LIT=$lit_path \
+    -DFETCHCONTENT_BASE_DIR=$fetch_dir \
+    -DGC_DEV_LINK_LLVM_DYLIB=$dylib
 cmake --build build --parallel $(nproc)