本文介绍STM32CubeIDE报“xxx is not implemented and will always fail”解决方法。

最近用STM32CubeIDE开发STM32程序时，编译报警告：

warning: _close is not implemented and will always fail
warning: _lseek is not implemented and will always fail
warning: _read is not implemented and will always fail
warning: _write is not implemented and will always fail

经过一番摸索，发现是“Source Location”没有添加新目录。解决方法：

1)右击项目选择“Properties”，选中“Paths and Symobols”，选择“Source Location”选项卡

2)添加自己新组织的目录或新建的目录

3)重新编译，警告消失

总结，本文介绍STM32CubeIDE报“xxx is not implemented and will always fail”的解决方法。