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8f04766d13
Use sysctl() to implement getMainExecutable() on NetBSD, rather than trying to guess the correct path from argv[0]. This is one of the fixes to recent clang-check-mac-libcxx-fixed-compilation-db.cpp test failure on NetBSD. This has been historically done on both FreeBSD and NetBSD in r303015, and reverted in r303285 due to buggy implementation on FreeBSD. However, FWIK the NetBSD implementation does not suffer from the same bugs and is more reliable than playing with argv[0]. Differential Revision: https://reviews.llvm.org/D56975 llvm-svn: 355283
llvm/lib/Support/Unix README =========================== This directory provides implementations of the lib/System classes that are common to two or more variants of UNIX. For example, the directory structure underneath this directory could look like this: Unix - only code that is truly generic to all UNIX platforms Posix - code that is specific to Posix variants of UNIX SUS - code that is specific to the Single Unix Specification SysV - code that is specific to System V variants of UNIX As a rule, only those directories actually needing to be created should be created. Also, further subdirectories could be created to reflect versions of the various standards. For example, under SUS there could be v1, v2, and v3 subdirectories to reflect the three major versions of SUS.