spdlog: Use system library if found

CMakeLists.txt

@@ -78,7 +78,10 @@ else()
 endif()
 add_definitions(-DLOADER_VERSION_SHA="${VERSION_SHA}")
 
-include_directories("${CMAKE_CURRENT_SOURCE_DIR}/third_party/spdlog_headers")
+find_package(spdlog CONFIG)
+if(NOT spdlog_FOUND)
+        include_directories("${CMAKE_CURRENT_SOURCE_DIR}/third_party/spdlog_headers")
+endif()
 
 # Update other relevant variables to include the patch
 set(PROJECT_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")

source/utils/CMakeLists.txt

@@ -1,10 +1,14 @@
 # Copyright (C) 2024 Intel Corporation
 # SPDX-License-Identifier: MIT
 
-add_library(utils
-  STATIC
-  "logging.h"
-  "logging.cpp"
-)
+set(logging_files logging.h logging.cpp)
+
+if(NOT spdlog_FOUND)
+       add_library(utils STATIC ${logging_files})
+       target_include_directories(utils PRIVATE ${CMAKE_SOURCE_DIR}/third_party/spdlog_headers/)
+else()
+       add_library(utils ${logging_files})
+       target_link_libraries(utils PRIVATE spdlog::spdlog)
+       set_property(TARGET utils PROPERTY POSITION_INDEPENDENT_CODE ON)
+endif()
 
-target_include_directories(utils PRIVATE ${CMAKE_SOURCE_DIR}/third_party/spdlog_headers/)