message: Link LevelDB library
diff: add_executable(Spectrecoin ../spectre.qrc main.cpp)
  -target_include_directories(Spectrecoin
  - PRIVATE
  - $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../leveldb/include>
  - $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../leveldb/helpers>
  +target_include_directories(Spectrecoin SYSTEM BEFORE
  + INTERFACE
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../db4.8/build_unix>
  )
  @@ -21,7 +19,7 @@ target_link_libraries(Spectrecoin
  Boost::thread
  OpenSSL::SSL
  OpenSSL::Crypto
  -# ${CMAKE_THREAD_LIBS_INIT}
  + leveldb::leveldb
  )
  # Configure a header file to pass some of the CMake settings
  