diff --git a/test/test_common.mk b/test/test_common.mk
index c0909b9e..b89bb151 100644
--- a/test/test_common.mk
+++ b/test/test_common.mk
@@ -17,9 +17,9 @@ READELF_FILE := bin.readelf
 CLANG_BIN_PATH := $(shell clang -print-prog-name=clang)
 LLVM_PATH := $(abspath $(dir $(CLANG_BIN_PATH))../)
 
-C_FLAGS = -Wall -O0 $(EXTRA_C_FLAGS)
+C_FLAGS = -Wall -O2 -fPIC $(EXTRA_C_FLAGS)
 C_FLAGS += -Xclang -load -Xclang $(LLVM_PATH)/lib/LLVMMDSFIIRInserter.so
-LINK_FLAGS = $(C_FLAGS) $(EXTRA_LINK_FLAGS)
+LINK_FLAGS = $(C_FLAGS) -pie -locclum_stub $(EXTRA_LINK_FLAGS)
 
 .PHONY: all test debug clean