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Re: [avr-gcc-list] Undefined reference - Why?
From: |
J Wunsch |
Subject: |
Re: [avr-gcc-list] Undefined reference - Why? |
Date: |
Mon, 5 Mar 2001 11:42:29 +0100 (MET) |
Bernt Hustad Hembre <address@hidden> wrote:
> avr-gcc tuger.o -Wl,-Map=tuger.map,--cref -mmcu=at90s4433 -o tuger.elf
> tuger.o: In function `main':
> M:\prosjekt\tuger\hw\firmware/tuger.c:10: undefined reference to `pow'
Add a `-lm' to the linker command line above. This will include the
math library. It's a very common error when programming in the Unix
environment. Unfortunately, there's no way how the `#include
<math.h>' could trigger the linker to also include the appropriate
object code library.
--
J"org Wunsch Unix support engineer
address@hidden http://www.interface-systems.de/~j