--- iec61850/src/lib/CMakeLists.txt	2024-02-18 01:24:59.343348000 -0500
+++ iec61850/src/lib/CMakeLists.txt	2024-02-18 01:28:38.333758000 -0500
@@ -14,15 +14,16 @@
                "${CMAKE_CURRENT_BINARY_DIR}/version.h")
 
 # fetch libiec61850
-if(NOT BUILD_LOCAL)
+if(NOT BUILD_LOCAL AND NOT BUILD_SYSTEM)
   include(FetchContent)
   FetchContent_Declare(
     libiec61850
     GIT_REPOSITORY https://github.com/mz-automation/libiec61850.git
     GIT_TAG "v1.5.1")
   FetchContent_MakeAvailable(libiec61850)
-endif(NOT BUILD_LOCAL)
+endif(NOT BUILD_LOCAL AND NOT BUILD_SYSTEM)
 
+if(NOT BUILD_SYSTEM)
 add_dependencies(iec61850_client iec61850)
 get_target_property(libiec61850_INCLUDE_DIR iec61850 INCLUDE_DIRECTORIES)
 
@@ -30,6 +31,12 @@
 target_include_directories(
   iec61850_client PUBLIC ${libiec61850_INCLUDE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
                          ${CMAKE_CURRENT_BINARY_DIR})
+else()
+target_link_libraries(iec61850_client PUBLIC ${LOCALBASE}/lib/libiec61850.a ${LOCALBASE}/lib/libhal.a pthread)
+target_include_directories(
+  iec61850_client PUBLIC ${LOCALBASE}/include/libiec61850 ${CMAKE_CURRENT_SOURCE_DIR}
+                         ${CMAKE_CURRENT_BINARY_DIR})
+endif(NOT BUILD_SYSTEM)
 
 if(MINGW)
   target_link_libraries(iec61850_client PUBLIC ws2_32 iphlpapi)