eclipse中报错：Errors running builder “Integrated External Tool Builder” on project

在eclipse构建项目的时候，一直报如下错误：

Errors during build.
Errors running builder "Integrated External Tool Builder" on project project.
The builder launch configuration could not be found.
Errors running builder "Integrated External Tool Builder" on project project.
The builder launch configuration could not be found.
Errors running builder "Integrated External Tool Builder" on project project.
The builder launch configuration could not be found.

解决方法如下：

1.Select the right project
2.Choose "project"on the tool bar -> Properties
3.Click "Builders" in the menus of the popped up window
4.Remove the missing builders