tree 9b2cd28776a7febd65f7731099db0e7d2df72245
parent b5ec5d8dfa59426912fbb4884fab642804b99827
author Saleem Abdulrasool <compnerd@compnerd.org> 1518810342 -0800
committer Saleem Abdulrasool <compnerd@compnerd.org> 1519788692 -0800

protect unistd.h inclusion with a check for Unix

This ensures that all the inclusions of unistd.h inclusion are protected
with the check that the header exists.  This header is only available on
unix like environments to define the standard of compliance.  This
protection is needed for other environments like Windows.