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From: davidm@cbmvax.commodore.com (David Miller - CATS)
Newsgroups: comp.unix.amiga
Subject: Re: Problem with gcc
Message-ID: <21769@cbmvax.commodore.com>
Date: 21 May 91 15:29:16 GMT
References: <1991May19.144743.25904@nntp-server.caltech.edu> <1991May21.045217.19569@csusac.csus.edu>
Reply-To: davidm@cbmvax.commodore.com (David Miller - The UNIX Guy)
Organization: Commodore, West Chester, PA
Lines: 41
Keywords: gcc unix library amiga

In article <1991May19.144743.25904@nntp-server.caltech.edu> tll@nntp-server.caltech.edu (Tal Lewis Lancaster) writes:
|After compiling all of my .c files using gcc, I get the following
|message when it is trying to link:
|
|Undefined symbols        First referenced in
|----------------------------------------------
|select                   /usr/lib/libsocket.so
|syslog                   /usr/lib/libsocket.so
|seteuid                  /usr/lib/libsocket.so


In article <1991May21.045217.19569@csusac.csus.edu> emmonsl@athena.ecs.csus.edu (L. Scott Emmons) writes:
|The only way I could get socket stuff to work on my UX was to make sure that
|/usr/ucb was in the path before /usr/ccs.  Also you need to execute gcc
|thusly:
|
|	gcc -o file file.c -lsocket -lucb
|			   ^^^^^^^^ ^^^^^
|
|/usr/ucb/ld will complain about some library (libsocket.so, I think) being
|included twice, but it will work ok.
|
|Strangely 'nuff, if you want to compile&link programs which don't use sockets
|and BSD stuff, /usr/ucb must _not_ be in the path before /usr/ccs...very,very
|strange behavior!

By default, gcc and cc will use the System V include files and
libraries.  To compile BSD programs, you need to do the following:


	[g]cc -I/usr/ucbinclude -L/usr/ucblib -o file file.c -lsocket -lucb

This tells the preprocessor to look for include files in
/usr/ucbinclude before trying /usr/include and tells the linker to
look for libraries in /usr/ucblib.

DavidM
--
DavidM			CATS - Commodore Applications and Technical Support
+1 215 431 9425		davidm@cbmvax.commodore.com
"Commodore Amiga 3000UX - Born to Run UNIX SVR4"