XCode C++ missing sperm()

Question

I\'m using C++ and XCode to create a cmd line app to save file permissions, however I can\'t get the sperm() method to be identified, the error is

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Answer 1

I ran into this a couple years ago. I don't feel like tiptoeing my way through Google with that particular search term at the moment, but if I remember correctly, the answer is that sperm() is a non-standard system function available on Solaris. But since it's not part of the unix standard, you won't find it on OS X.