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- Submitted-by: gwyn@smoke.brl.mil (Doug Gwyn)
-
- In article <1feei7INN9rj@ftp.UU.NET> psm@nosc.mil (Scot Mcintosh) writes:
- >A document I'm reading makes the following statement:
- >"POSIXS compliance shall be met via adherence to the
- >System V Interface Definition (SVID) for Release 4 of
- >Unix." I infer from this that the writer thinks that
- >SVIDR4 and POSIX will be the same from the point of
- >view of the application. Will that actually be the
- >case?
-
- Well, it's not a very good spec since (last I heard)
- the SVID is pubblished as an "Issue n", not "for Release n".
- Of course, SVIDs do tend to correspond to major UNIX product
- releases. Whichever set of SVID volumes corresponds to UNIX
- System V Release 4.0 would describe an interface that is
- essentially POSIX.1 conformant, also XPG conformant, also
- ISO C conformant, plus a LOT of stuff beyond POSIX.1.
- However, all the standards keep changing so one needs to be
- quite specific on the editions being specified.
-
- I was once involved in writing a procurement spec for the OS,
- wherein the delivered system was required to conform to the
- C standard, SVID, and POSIX.1, with conflicts among the
- standards being resolved in favor of the one occuring first
- in that list. While all the major standards (these plus XPG
- and AES) attempt to be compatible, some contradictions arise
- so some form of precedence needs to be established.
-
-
- [ Also noted by cflatter@NRAO.EDU, norcott_bill@tandem.com, and
- karish@pangea.Stanford.EDU -- mod ]
-
- Volume-Number: Volume 29, Number 76
-
-