I have spent my last five hours looking for this weird situation a reasonable explanation. 

Here is the warning:

```
ld: warning: directory not found for option '-L/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0/Extend/SDKExport'
ld: warning: directory not found for option '-F/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0/Connection'
ld: warning: directory not found for option '-F/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0/Core'
ld: warning: directory not found for option '-F/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0/Extend'
ld: warning: directory not found for option '-F/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0'
ld: warning: directory not found for option '-F/Users/oasis_weng/Desktop/My Life/Life For Myself/Programming/Projects/ChangWeiBo/../xCodeExamples/ShareSDK/ShareSDK_v2.1.0/UI'

```

However though, I know all those alleged "`missing files`" are truly and actually existed in my application folder and the app runs properly with these files.

The problem of those directories in the warning is the actual path do not include the `../xCodeExamples/ part.`

What should I do to get these warning away?