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openssl-3.4.1: Applied our changes, regenerated files, added missing files and functions. This time with a three way merge. bugref:10890
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| 1 | Notes on POSIX
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| 2 | ==============
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| 3 |
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| 4 | There are few instances where OpenSSL requires a POSIX C library, at least
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| 5 | version 1-2008, or compatible enough functionality.
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| 6 |
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| 7 | There are exceptions, though, for platforms that do not have a POSIX
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| 8 | library, or where there are quirks that need working around. A notable
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| 9 | platform is Windows, where POSIX functionality may be available, but where
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| 10 | the function names are prefixed with an underscore, and where some POSIX
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| 11 | types are not present (such as `ssize_t`).
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| 12 |
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| 13 | Platforms that do have a POSIX library may still not have them accessible
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| 14 | unless the following macros are defined:
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| 15 |
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| 16 | _POSIX_C_SOURCE=200809L
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| 17 | _XOPEN_SOURCE=1
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| 18 |
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| 19 | This is, for example, the case when building with gcc or clang and using the
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| 20 | flag `-ansi`.
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