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1llvm/lib/Support/Unix README2===========================3 4This directory provides implementations of the lib/System classes that5are common to two or more variants of UNIX. For example, the directory6structure underneath this directory could look like this:7 8Unix - only code that is truly generic to all UNIX platforms9 Posix - code that is specific to Posix variants of UNIX10 SUS - code that is specific to the Single Unix Specification11 SysV - code that is specific to System V variants of UNIX12 13As a rule, only those directories actually needing to be created should be14created. Also, further subdirectories could be created to reflect versions of15the various standards. For example, under SUS there could be v1, v2, and v316subdirectories to reflect the three major versions of SUS.17