updated build system

cmake/libraries/spdlog.cmake

@@ -1,33 +0,0 @@
-if(PROJECT_ENABLE_SPDLOG)
-  if(PROJECT_BUILD)
-    find_package(spdlog ${SPDLOG_VERSION} REQUIRED)
-
-    add_definitions(-DPROJECT_ENABLE_SPDLOG)
-
-    include_directories(BEFORE SYSTEM
-      ${SPDLOG_INCLUDE_DIRS}
-    )
-
-    link_libraries(
-      spdlog::spdlog
-    ) 
-  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
-    ExternalProject_Add(spdlog_project
-      PREFIX external
-      URL ${PROJECT_3RD_PARTY_DIR}/spdlog-${SPDLOG_VERSION}.tar.gz
-      URL_HASH SHA256=1586508029a7d0670dfcb2d97575dcdc242d3868a259742b69f100801ab4e16b
-      LIST_SEPARATOR |
-      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
-        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
-        -DBUILD_STATIC_LIBS=ON
-        -DSPDLOG_BUILD_EXAMPLE=OFF
-        -DSPDLOG_FMT_EXTERNAL=OFF
-        -DSPDLOG_FMT_EXTERNAL_HO=OFF
-    )
-
-    set(PROJECT_DEPENDENCIES 
-      ${PROJECT_DEPENDENCIES}
-      spdlog_project
-    )
-  endif()
-endif()