Path: utzoo!attcan!uunet!husc6!mailrus!ames!oliveb!sun!thetone!swilson
From: swilson%thetone@Sun.COM (Scott Wilson)
Newsgroups: comp.sys.mac.programmer
Subject: Re: LSC 3.0, argc & argv, linking
Message-ID: <67189@sun.uucp>
Date: 7 Sep 88 18:35:38 GMT
References: <66791@sun.uucp> <2391@pixar.UUCP>
Sender: news@sun.uucp
Reply-To: swilson@sun.UUCP (Scott Wilson)
Organization: Sun Microsystems, Mountain View
Lines: 20

>    I say it's unfair to expect ThinkC to do something Unix C doesn't: allow
>the user to supercede an arbitrary function from a library.  The Unix
>linker links in a whole module whenever it defines a single undefined symbol.

UNIX libraries (.a files) are composed of many separately compiled object
files (.o files).  As far as I know the linker extracts only the .o files
needed to resolve references when linking.  If you have your own strcpy,
for example, the linker will not get strcpy.o from the library because the
reference has already been satisified.  Which versions of UNIX are you
talking about, because the following has always worked for me without
linker complaints:

		cc try.c strcpy.c -o try

I'm only asking THINK C to be as smart as the UNIX linker, not any smarter.

--
Scott Wilson		arpa: swilson@sun.com
Sun Microsystems	uucp: ...!sun!swilson
Mt. View, CA