HANDLE 不是编译器自动识别的类型吗？为什么编译的时候报错啊？

导入了C:\ti\pdk_C6678_1_1_2_5\packages\ti\transport\ndk\nimu 这里的例子，导入的时候勾选了把他拷贝的当前工作文件夹，编译的时候报错：

"C:\ti\ndk_3_61_01_01\packages\ti\ndk\inc\stacksys.h", line 77: warning #11-D: unrecognized preprocessing directive
"C:\ti\ndk_3_61_01_01\packages\ti\ndk\inc\socketndk.h", line 304: warning #233-D: declaration is not visible outside of function
"C:/ti/workspace_v10_1/nimu_eth_evmc6678l/include/nimu_internal.h", line 183: error #20: identifier "HANDLE" is undefined
"../src/nimu_eth.c", line 313: error #20: identifier "uint" is undefined
"../src/nimu_eth.c", line 502: warning #225-D: function declared implicitly
"../src/nimu_eth.c", line 791: error #20: identifier "HANDLE" is undefined

HANDLE 应该是C或者C++语言支持的句柄定义啊，为啥这里会报错呢？unit也报错？这完全不符合逻辑啊！难道例子里用的7.4.22过时了？

我电脑里安装了c6000_7.4.22的编译器啊！