diff --git a/tests/test_app/common_func.c b/tests/test_app/common_func.c
index 1ed83e73f674d0c83174266b6e32a43b7e67495e..91ad7c84b4c36ec484dc3b863a830b400cf7a5b9 100644
--- a/tests/test_app/common_func.c
+++ b/tests/test_app/common_func.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MulanPSL-2.0 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
diff --git a/tests/test_app/test_app.c b/tests/test_app/test_app.c
index dbf3085a3ed6b889cc424a20346f3db89e983a8a..a1959d735aed0b9a4f51029394e50b09b15ee094 100644
--- a/tests/test_app/test_app.c
+++ b/tests/test_app/test_app.c
@@ -1,10 +1,13 @@
-#include <dlfcn.h>
+/* SPDX-License-Identifier: MulanPSL-2.0 */
+#define _GNU_SOURCE
+#include <features.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>
 #include <unistd.h>
+#include <dlfcn.h>
 
 extern int lib1_add(int a, int b);
 extern int lib2_add(int a, int b);
diff --git a/tests/test_app/util1.c b/tests/test_app/util1.c
index 12d361f1c0f8fba16f19e0108b8a4b30ba66248e..6299b95aa80e9de04369f5da497aaecd90545f96 100644
--- a/tests/test_app/util1.c
+++ b/tests/test_app/util1.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MulanPSL-2.0 */
 #include <stdio.h>
 
 __attribute__((constructor)) void constructor_in_lib1(void)
diff --git a/tests/test_app/util2.c b/tests/test_app/util2.c
index f31148c9b5833c2418600fe090ffe5547d7e3eff..cdfcfe704ad1a5e396bb93992259384fa33dd489 100644
--- a/tests/test_app/util2.c
+++ b/tests/test_app/util2.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MulanPSL-2.0 */
 #include <stdio.h>
 
 // __thread int g_thread_lib21 = 5;
diff --git a/tests/test_ifunc/test_ifunc.c b/tests/test_ifunc/test_ifunc.c
index 2b0aa0f11caacebcce5049ac800c2a590be68e8f..7082e26c91ba031167c394c58971fda31346a10b 100644
--- a/tests/test_ifunc/test_ifunc.c
+++ b/tests/test_ifunc/test_ifunc.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MulanPSL-2.0 */
 #include <ctype.h>
 #include <curses.h>
 #include <dirent.h>
diff --git a/tests/test_simple/Makefile b/tests/test_simple/Makefile
index 90a317f6a51a13c9e5e5351bea355686476e2e1d..a2b2318ad11774bed017f49981dd1f9247056f15 100644
--- a/tests/test_simple/Makefile
+++ b/tests/test_simple/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MulanPSL-2.0
-ROOT_DIR=../../../
+ROOT_DIR=../../
 BUILD_DIR=$(ROOT_DIR)build/
 SYSBOOST=$(BUILD_DIR)sysboost/sysboost
 TEST_APP=$(BUILD_DIR)sysboost/tests/test_simple/simple_app
diff --git a/tests/test_simple/simple_app.c b/tests/test_simple/simple_app.c
index 5110d01d9e272c0fe0b14f90288caaf0926881a8..634c3fc5b86d4d4d8498baf0f47629f6e2c2bcad 100644
--- a/tests/test_simple/simple_app.c
+++ b/tests/test_simple/simple_app.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MulanPSL-2.0 */
 #include <stdio.h>
 
 int main(void)