message: Do not force -O2 and -g
diff: @@ -24,7 +24,7 @@ endif ()
  include(GNUInstallDirs)
  if (NOT MSVC)
  - set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -g -fvisibility-inlines-hidden")
  + set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden")
  endif ()
  if (MSVC)
  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
  