diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55661408b..8d82a7af8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ project(GraphCompiler VERSION "0.1.0" LANGUAGES C CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0")
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
diff --git a/scripts/compile.sh b/scripts/compile.sh
index 3d97a3926..5a7742c1b 100755
--- a/scripts/compile.sh
+++ b/scripts/compile.sh
@@ -6,11 +6,14 @@ repo=intel/graph-compiler
 # set -x
 
 print_usage() {
-    echo "Usage:"
-    echo "$0 "
-    echo "    [ -d | --dev  ] Dev build, build LLVM in current env and place all to 'external' dir"
-    echo "    [ -l | --dyn  ] Dynamical linking, requires rebuild of LLVM, activates 'dev' option"
-    echo "    [ -h | --help ] Print this message"
+    cat <<EOF
+Usage:
+$(basename "$0")
+    [ -d | --dev   ] Dev build, build LLVM in current env and place all to 'external' dir
+    [ -l | --dyn   ] Dynamical linking, requires rebuild of LLVM, activates 'dev' option
+    [ -c | --clean ] Delete the build artifacts from the previous build
+    [ -h | --help  ] Print this message
+EOF
 }
 
 DEV_BUILD=false
@@ -24,6 +27,9 @@ for arg in "$@"; do
             DEV_BUILD=true 
             DYN_LINK=true 
             ;;
+        -c | --clean)
+            CLEANUP=true
+            ;;
         -h | --help)
             print_usage
             exit 0
@@ -60,9 +66,12 @@ load_llvm() {
 build_llvm() {
     if ! [ -d "llvm-project" ]; then
         git clone https://github.com/llvm/llvm-project.git
+        cd llvm-project
+    else
+        cd llvm-project
+        git fetch --all
     fi
 
-    cd llvm-project
     git checkout ${LLVM_HASH}
 
     dylib=OFF
@@ -70,12 +79,14 @@ build_llvm() {
         dylib=ON
     fi
 
+    [ -z "$CLEANUP" ] || rm -rf build
     cmake -G Ninja llvm -B build \
-        -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=true \
-        -DLLVM_ENABLE_PROJECTS="mlir" -DLLVM_TARGETS_TO_BUILD="X86" \
-        -DLLVM_INSTALL_UTILS=true -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-        -DLLVM_INSTALL_GTEST=ON -DLLVM_BUILD_LLVM_DYLIB=$dylib -DLLVM_LINK_LLVM_DYLIB=$dylib
-    cmake --build build 
+        -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS_DEBUG="-g -O0" \
+        -DLLVM_ENABLE_ASSERTIONS=true -DLLVM_ENABLE_PROJECTS="mlir"\
+        -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_INSTALL_UTILS=true \
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DLLVM_INSTALL_GTEST=ON \
+        -DLLVM_BUILD_LLVM_DYLIB=$dylib -DLLVM_LINK_LLVM_DYLIB=$dylib
+    cmake --build build
 
     MLIR_DIR="$PWD/build/lib/cmake/mlir"
     cd ..
@@ -113,15 +124,19 @@ if ! LIT_PATH=$(which lit) ; then
     fi
 fi
 if [ "$DEV_BUILD" = 'true' ]; then
+    BUILD_TYPE=Debug
     FETCH_DIR=$PROJECT_DIR/externals
     LIT_PATH=$PROJECT_DIR/externals/llvm-project/build/bin/llvm-lit
+else
+    BUILD_TYPE=RelWithDebInfo
 fi
 if [ "$DYN_LINK" = 'true' ]; then 
     DYLIB=ON
 fi
 
+[ -z "$CLEANUP" ] || rm -rf build
 cmake -S . -G Ninja -B build \
-    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
     -DMLIR_DIR=$MLIR_DIR \
     -DLLVM_EXTERNAL_LIT=$LIT_PATH \
     -DFETCHCONTENT_BASE_DIR=$FETCH_DIR \