这个bug在去年九月就已经反映在android论坛（http://code.google.com/p/android/issues/detail?id=37424 ），可现在（2013.5.31）还没有解决。晕啊，CDT的开发者不看android论坛吗。文章最后给出的临时解决方案，不嫌累的话就先用着。

Please describe the problem in detail, with the following information (if applicable)Host OS: OS XSDK tools version (available in the "About" section of the 'android' toolUI): 20.0.1Eclipse version: JunoADT plug-in version: 20.0.3Platform targeted by your project: ICSVersion of the platform running in the emulator: N/ASTEPS TO REPRODUCE:1. Install NDK Plugin in Eclipse2. Set NDK path (Preferences...->Android->NDK->NDK Location)3. Right-click project->Android Tools->Add Native Support...4. Install another version of the the NDK, using another path5. Update NDK path (Preferences...->Android->NDK->NDK Location)6. Project->Properties->C/C++ General->Paths and Symbols7. When "Show built-in values" is checked, the old NDK path is showed, not the new NDK pathEXPECTED RESULTS:这个包含路径应该随NDK移动而更新，至少也要可以用户设定么

The include paths should be updated when the NDK is moved.OBSERVED RESULTS:

改变NDK位置后无法改变内建的include路径。 （为啥要改变NDK路径呢？我的情况是，我要把工程复制到另一台pc上开发）Changing the NDK location does not change the built-in include pathsADDITIONAL INFORMATION: Attach sample project, etc. If possible, try to reproduce using ApiDemos. If the problem is happening in the emulator, consider attaching the outputof "adb bugreport"

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Since this is with 8.1.0 and 20.0.3 where the indexer didn't work anyway, please try with two changes:1. Use ADT 21 preview or CDT 8.0.2.2. After changing NDK, right click on the project and do a rebuild index.

This is actually a bug in the Android NDK plugin. You can use the following workaround until the bug is fixed:这实际上是android NDK插件的 bug，在bug解决之前你可以用以下方法解决。1. Close eclipse.2. Remove the file $workspace/.metadata/.plugins/com.android.ide.eclipse.ndk/<appName>.pathInfo3. Start eclipse4. If necessary, do a Index -> Rebuild.

其实你大可不必remove这个路径文件。你直接修改这个文件就好了，爽吧？