Error: undefined reference to cos

[Eric Christopher]

Use -lm to link in libm when you compile your program.

-eric

On Fri, 2003-04-04 at 17:00, Jnanesh wrote:
> I am using gcc 3.2 on Red Hat Linux 8.0
> When I compiled the C program given below using the command: cc test.c
> 
> #include <stdio.h>
> #include <math.h>
> #define pi 3.1415
> int main()
> {
>     double a;
>     a=sin(pi/2);
>     printf("a = %lf",a);
>     return(0);
> }
> 
> It gives errors as given below
> 
> In function `main':
> /tmp/ccBFnFNj.o(.text+0x1e): undefined reference to `sin'
> collect2: ld returned 1 exit status
> 
> Please help me out to see through this problem
-- 
Eric Christopher <echristo@redhat.com>