spdlog: Use system library if found

Author: frantisekz

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

@@ -7,4 +7,7 @@ add_library(utils
   "logging.cpp"
 )
 
-target_include_directories(utils PRIVATE ${CMAKE_SOURCE_DIR}/third_party/spdlog_headers/)
+if(NOT spdlog_FOUND)
+       target_include_directories(utils PRIVATE ${CMAKE_SOURCE_DIR}/third_party/spdlog_headers/)
+endif()
+