diff --git a/sample/hub_lvx_file/CMakeLists.txt b/sample/hub_lvx_file/CMakeLists.txt
index e7ddf56..10d81d9 100644
--- a/sample/hub_lvx_file/CMakeLists.txt
+++ b/sample/hub_lvx_file/CMakeLists.txt
@@ -7,3 +7,7 @@ target_link_libraries(${DEMO_NAME}
         PRIVATE
         ${PROJECT_NAME}_static
         )
+target_include_directories(${DEMO_NAME}
+        PRIVATE
+        "${CMAKE_SOURCE_DIR}/sdk_core/include/third_party/cmdline"
+        )
diff --git a/sample/lidar_lvx_file/CMakeLists.txt b/sample/lidar_lvx_file/CMakeLists.txt
index 46d5d99..938c534 100644
--- a/sample/lidar_lvx_file/CMakeLists.txt
+++ b/sample/lidar_lvx_file/CMakeLists.txt
@@ -7,3 +7,7 @@ target_link_libraries(${DEMO_NAME}
         PRIVATE
         ${PROJECT_NAME}_static
         )
+target_include_directories(${DEMO_NAME}
+        PRIVATE
+        "${CMAKE_SOURCE_DIR}/sdk_core/include/third_party/cmdline"
+        )
diff --git a/sample_cc/hub/CMakeLists.txt b/sample_cc/hub/CMakeLists.txt
index 5840403..9966f72 100644
--- a/sample_cc/hub/CMakeLists.txt
+++ b/sample_cc/hub/CMakeLists.txt
@@ -7,3 +7,7 @@ target_link_libraries(${DEMO_NAME}
         PRIVATE
         ${PROJECT_NAME}_static
         )
+target_include_directories(${DEMO_NAME}
+        PRIVATE
+        "${CMAKE_SOURCE_DIR}/sdk_core/include/third_party/cmdline"
+        )
diff --git a/sample_cc/lidar/CMakeLists.txt b/sample_cc/lidar/CMakeLists.txt
index 07aeed1..2a6b854 100644
--- a/sample_cc/lidar/CMakeLists.txt
+++ b/sample_cc/lidar/CMakeLists.txt
@@ -7,3 +7,17 @@ target_link_libraries(${DEMO_NAME}
         PRIVATE
         ${PROJECT_NAME}_static
         )
+target_include_directories(${DEMO_NAME}
+        PRIVATE
+        "${CMAKE_SOURCE_DIR}/sdk_core/include/third_party/cmdline"
+        )
+
+message("----- CMAKE_SOURCE_DIR = ${CMAKE_SOURCE_DIR}")
+message("----- CMAKE_CURRENT_SOURCE_DIR = ${CMAKE_CURRENT_SOURCE_DIR}")
+message("----- CMAKE_BINARY_DIR = ${CMAKE_BINARY_DIR}")
+message("----- CMAKE_CURRENT_BINARY_DIR = ${CMAKE_CURRENT_BINARY_DIR}")
+message("----- PROJECT_SOURCE_DIR = ${PROJECT_SOURCE_DIR}")
+
+
+get_target_property(incl_dirs ${DEMO_NAME} INCLUDE_DIRECTORIES)
+message("----- ${DEMO_NAME} incl dirs = ${incl_dirs}")
diff --git a/sample_cc/lidar_utc_sync/CMakeLists.txt b/sample_cc/lidar_utc_sync/CMakeLists.txt
index 9c84884..c60b3f4 100644
--- a/sample_cc/lidar_utc_sync/CMakeLists.txt
+++ b/sample_cc/lidar_utc_sync/CMakeLists.txt
@@ -11,3 +11,7 @@ target_link_libraries(${DEMO_NAME}
         PRIVATE
         ${PROJECT_NAME}_static
         )
+target_include_directories(${DEMO_NAME}
+        PRIVATE
+        "${CMAKE_SOURCE_DIR}/sdk_core/include/third_party/cmdline"
+        )
\ No newline at end of file
diff --git a/sdk_core/CMakeLists.txt b/sdk_core/CMakeLists.txt
index 461e595..54b0cc0 100644
--- a/sdk_core/CMakeLists.txt
+++ b/sdk_core/CMakeLists.txt
@@ -17,10 +17,9 @@ set(LIVOX_SDK_VERSION_STRING "${LIVOX_SDK_MAJOR_VERSION}.${LIVOX_SDK_MINOR_VERSI
 target_include_directories(${SDK_LIBRARY}
         PUBLIC
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
+        PRIVATE
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/FastCRC>"
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/spdlog>"
-        "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/cmdline>"
-        PRIVATE
         src)
 
 set_target_properties(${SDK_LIBRARY} PROPERTIES PUBLIC_HEADER "include/livox_def.h;include/livox_sdk.h")