error_output

In file included from /media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:6:0,
                 from /media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/drivers/gpio/omap44x2.cc:6:
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/hw_device.h: In instantiation of ‘Hw::Device* Hw::Device_factory_t<HW_DEV>::create() [with HW_DEV = {anonymous}::Gpio_omap44x_chip]’:
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/drivers/gpio/omap44x2.cc:328:1:   required from here
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/hw_device.h:287:40: error: cannot allocate an object of abstract type ‘{anonymous}::Gpio_omap44x_chip’
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/drivers/gpio/omap44x2.cc:56:8: note:   because the following virtual functions are pure within ‘{anonymous}::Gpio_omap44x_chip’:
In file included from /media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/drivers/gpio/omap44x2.cc:6:0:
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:93:23: note:   virtual Io_irq_pin* Hw::Gpio_chip::get_irq(unsigned int)
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:107:16: note:  virtual void Hw::Gpio_chip::multi_setup(const Hw::Gpio_chip::Pin_slice&, unsigned int, unsigned int)
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:116:16: note:  virtual void Hw::Gpio_chip::multi_config_pad(const Hw::Gpio_chip::Pin_slice&, unsigned int, unsigned int)
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:123:16: note:  virtual void Hw::Gpio_chip::multi_set(const Hw::Gpio_chip::Pin_slice&, unsigned int)
/media/erry/chiqiVstorage/l4resnap/src/l4/pkg/io/server/src/gpio:128:20: note:  virtual unsigned int Hw::Gpio_chip::multi_get(unsigned int)