并且变量不是自动全局的,也就是说,如果我只是在setup()中声明c = createGraphics(400,400),然后在draw()中声明c.beginDraw(),我会得到一个NameError: globalname 'c' is not defined,这不能通过在上面的代码行中简单地说global c来解决。
_GLOBAL__sub_I_ImfChromaticitiesAttribute.cpp+0x24): undefined reference to `std::ios_base::Init::~Init_GLOBAL__sub_I_ImfCompressionAttribute.cpp+0x8): undefined reference to `std::ios_base::Init::Init()'_GLOBAL__sub_I_ImfCompressionAttribute.cpp+0x2