PX4 编译程序出错
不能发截图我描述下，帮我看看什么原因：错误提示： PXFirmware/src/drivers/device/device_nuttx.h:60:1error:unknown type name 'namespacenamespace device __EXPORT
这是device/device_nuttx.h 中的代码部分：
/**
* Namespace encapsulating all device framework classes, functions and data.
*/
namespace device __EXPORT
{
typedef struct file file_t;
/**
* Fundamental base class for all device drivers.
*
* This class handles the basic "being a driver" things, including
* interrupt registration and dispatch.
*/
class __EXPORT Device
{
public:
/**
* Destructor.
*
* Public so that anonymous devices can be destroyed.
*/
virtual ~Device();
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