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Date: Fri, 05 Jul 1996 18:27:45 -0400
From: Rick Weldon <rick@wisetech.com>
Organization: Weldon Internet SEcurity Technologies
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To: Michael Searle <searle@longacre.demon.co.uk>
CC: questions@freefall.freebsd.org
Subject: Re: C libraries
References: <mE9178E39@longacre.demon.co.uk>
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Michael Searle wrote:

> #cc sqrt.c -o sqrt
> /var/tmp/cc0002661.o: Undefined symbol '_sqrt' referenced from text segment

You need to link in the math library. Add -lm

# cc sqrt.c -o sqrt -lm 

should do it.

I guess on the other machine your mentioned the math routines are in libc or the math lib is
automagically searched.

Rick