Xref: news2.mv.net comp.os.msdos.djgpp:7276
From: cziwkga AT ulcc DOT ac DOT uk (Kevin Ashley)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Multitasking in DOS (fwd)
Date: 12 Aug 1996 12:03:19 GMT
Organization: University of London Computer Centre
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Distribution: world
Message-ID: <4un6i7$hnj@calypso.ulcc.ac.uk>
References: <Pine DOT A32 DOT 3 DOT 93 DOT 960809134325 DOT 11912F-100000 AT nervion DOT cs DOT us DOT es>
Reply-To: k DOT ashley AT ulcc DOT ac DOT uk
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp


In article <Pine DOT A32 DOT 3 DOT 93 DOT 960809134325 DOT 11912F-100000 AT nervion DOT cs DOT us DOT es>, "Garrido Freire, Fco. Javier ((R)JA.GAR. SOFT)" <garridof AT cs DOT us DOT es> writes:
[snip]
|>Whichever ANSI C programs compiled by a modern compiler (vg.
|>DJGPP) will be on its best behaviour. But, could DJGPP be fed on
|>POSIX programs?
|>
|>Compatibility is another problem, but, what is Windows compatible
|>with?
|>
|>PS: In order to answer 1st question I reread Faq v2 21.1. It says
|>DJGPP is ANSI- and POSIX- complaint... but, try to compile any *IX
|>shell. (I have to re-re-read FAQ more often, anyway :) 
|>

No-one has ever claimed that the Unix shells are themselves POSIX-compliant
or ANSI-compliant programs. Shells like ksh *provide* a posix-compliant
environment, but to do so they often have to interact with the non-POSIX,
non-ANSI features of their host system. Shells more than most programs
have to be aware of the peculiarities of the OS they are running
under, although much of their code (such as the parsers) should be
platform-independent. But expecting to compile a shell from one
platform on another without problems is to misunderstand what the
shell has to do.
------------------------------------------------------------------------------
Kevin Ashley                              K DOT Ashley AT Ulcc DOT ac DOT uk
Systems Development Group Manager      http://www.ulcc.ac.uk/staff/Kevin+Ashley
University of London Computer Centre.      ...ukc!ncdlab!K.Ashley
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