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From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Unresolved externals.
Date:	2 Jan 2002 15:14:22 GMT
Organization:	Aachen University of Technology (RWTH)
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HARY <Hary AT address DOT is DOT invalid> wrote:

> Now I can link this program with: 'Dlstat=stat -Dsetegid=setgid
> --Dseteuid=setuid' options.

> But I've never before tried to port UNIX program to DOS. Is it
> preferred method or should I do it in another way?

The original program is somewhat unportable as it is --- segegid and
seteuid are BSD'ism. They may be widely available on non-BSD Unixes,
but no portable program should blindly assume they're there.  The
canonical GNU method would be to add autoconf code such that
'configure' detects the presence of these functions, and then you wrap
all usages of it like this:

	#if HAVE_SETEGID
	  /* use it */
	#else
	  /* solve the task in some other way */
	#endif


-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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