Re: Error: Undefined reference to ''

[caojun <caojun@xxxxxxxxxxx>]

jlh wrote:
> caojun wrote:
> > I am trying to compile the following code
> >
> >  1 #include <stdio.h>
> >  2 #include <math.h>
> >  3 int main (){
> >  4         double a = 0.0;
> >  5         double b = pow (10,a);
> >  6         return 1;
> >  7 }
> >
> > while I was given the following error message
> >
> > caojun@ubuntu:~/homework$ gcc -o test.out utility.c
> > /tmp/ccOQV3cx.o: In function `main':
> > utility.c:(.text+0x27): undefined reference to `pow'
> > collect2: ld returned 1 exit status
>
> You fail to mention what OS you're on, but at least on my linux
> system, 'man pow' says to link with -lm.
>
> jlh
It works.
Thank you very much.

I am using gcc-4.1-multilib, and the system is ubuntu 7.10.