message: Remove pthread
diff: @@ -171,7 +171,7 @@ if(UNIX)
  endif()
  endif(APPLE)
  # In Cmake > 3, there is the option: set (CMAKE_CXX_STANDARD 11). To see in the future.
  - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")
  + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
  add_compile_options(-Wsign-conversion)
  add_compile_options(-Wdouble-promotion)
  add_compile_options(-Wno-attributes)
  