diff --git a/Makefile b/Makefile
index 0c16c3e..b3b5b05 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,9 @@
 build_test: 
 	@build_scripts/build_test.sh
 
+build_test_dbg: 
+	@build_scripts/build_test_dbg.sh
+
 build_lib: 
 	@build_scripts/build_lib.sh
 
diff --git a/build_scripts/build_lib.sh b/build_scripts/build_lib.sh
index 1ae2062..e0c7f55 100644
--- a/build_scripts/build_lib.sh
+++ b/build_scripts/build_lib.sh
@@ -6,5 +6,5 @@ print "${CYAN}=============[build_lib]==============\n"
 clear_dir "$OUTDIR"
 clear_dir "$OBJDIR"
 compile_c "$BUILD_LIB_C_ARGS" "$SRC_C tests/test_marshalling.c"
-compile_cpp "$BUILD_LIB_C_ARGS" "$SRC_CPP"
+compile_cpp "$BUILD_LIB_CPP_ARGS" "$SRC_CPP"
 link "$BUILD_LIB_CPP_ARGS $BUILD_LIB_LINKER_ARGS" "$LIB_FILE"
diff --git a/build_scripts/build_test_dbg.sh b/build_scripts/build_test_dbg.sh
new file mode 100644
index 0000000..ff56aa0
--- /dev/null
+++ b/build_scripts/build_test_dbg.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}===========[build_test_dbg]===========\n"
+clear_dir "$OUTDIR"
+clear_dir "$OBJDIR"
+compile_c "$BUILD_TEST_DBG_C_ARGS" "$SRC_C $TESTS_C"
+compile_cpp "$BUILD_TEST_DBG_CPP_ARGS" "$SRC_CPP $TESTS_CPP"
+link "$BUILD_TEST_DBG_CPP_ARGS $BUILD_TEST_DBG_LINKER_ARGS" $TEST_DBG_FILE
diff --git a/build_scripts/default.config.sh b/build_scripts/default.config.sh
index ac7022a..eb32916 100644
--- a/build_scripts/default.config.sh
+++ b/build_scripts/default.config.sh
@@ -16,12 +16,18 @@ VALGRIND_ARGS="-s --read-var-info=yes --track-origins=yes --fullpath-after=kerep
 
 # build_lib
 LIB_FILE=kerep.so
-BUILD_LIB_C_ARGS="-O2 -fpic -shared"
-BUILD_LIB_CPP_ARGS="$BUILD_LIB_CPP_ARGS"
-BUILD_LIB_LINKER_ARGS="-flto -Wl,-soname,$LIB_FILE"
+BUILD_LIB_C_ARGS="-O2 -fpic -flto -shared"
+BUILD_LIB_CPP_ARGS="$BUILD_LIB_C_ARGS"
+BUILD_LIB_LINKER_ARGS="-Wl,-soname,$LIB_FILE"
 
 # build_test
 TEST_FILE=kerep.com
-BUILD_TEST_C_ARGS="-O0 -g"
-BUILD_TEST_CPP_ARGS="$BUILD_TEST_CPP_ARGS"
+BUILD_TEST_C_ARGS="-O2"
+BUILD_TEST_CPP_ARGS="$BUILD_TEST_C_ARGS"
 BUILD_TEST_LINKER_ARGS=""
+
+# build_test_dbg
+TEST_DBG_FILE=$TEST_FILE
+BUILD_TEST_DBG_C_ARGS="-O0 -g"
+BUILD_TEST_DBG_CPP_ARGS="$BUILD_TEST_DBG_C_ARGS"
+BUILD_TEST_DBG_LINKER_ARGS=""
diff --git a/build_scripts/test_valgrind.sh b/build_scripts/test_valgrind.sh
index ead1518..0413a82 100644
--- a/build_scripts/test_valgrind.sh
+++ b/build_scripts/test_valgrind.sh
@@ -4,5 +4,5 @@ source build_scripts/init.sh
 
 print "${CYAN}===========[test_valgrind]============\n"
 cd $OUTDIR
-valgrind $VALGRIND_ARGS ./$TEST_FILE
+valgrind $VALGRIND_ARGS ./$TEST_DBG_FILE
 cd ..