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Dear All,
I'm having a nightmare compiling a small simple program on a Linux
Fedora core 2 platform...the program goes like this...

in file mathtest.c

#include <math.h>
#include <stdio.h>

int main(void)
{
printf("%s%d\n","The value of sin(3) is: ", sin(3));
return 0;
}

I'm compiling the above program by issuing the following command on
bash shell...

gcc -Wall -o mathtest mathtest.c

the compiler is throwing the following error

in function 'main':
:undefined reference to 'sin'

....and stops the compilation process..
I'm stuck up, and can't figure out the error..plz help

sudip wrote:
> Dear All,
> I'm having a nightmare compiling a small simple program on a Linux
> Fedora core 2 platform...the program goes like this...
>
> in file mathtest.c
>
> #include <math.h>
> #include <stdio.h>
>
> int main(void)
> {
> printf("%s%d\n","The value of sin(3) is: ", sin(3));
> return 0;
> }
>
> I'm compiling the above program by issuing the following command on
> bash shell...
>
> gcc -Wall -o mathtest mathtest.c
>
> the compiler is throwing the following error
>
> in function 'main':
> :undefined reference to 'sin'
>
> ...and stops the compilation process..
> I'm stuck up, and can't figure out the error..plz help
>
This is a FAQ. Find it. Read it. It's not that hard. (And doing so will
serve you *very* well in the long run.)

HTH,
--ag
--
Artie Gold -- Austin, Texas
http://it-matters.blogspot.com (new post 12/5)
http://www.cafepress.com/goldsays

sudip wrote:

> the compiler is throwing the following error
>
> in function 'main':
> :undefined reference to 'sin'
>
> ...and stops the compilation process..
> I'm stuck up, and can't figure out the error..plz help
>

The best help (teach a man to fish): check the FAQ before posting.

The inferior help (give you the fish): what you'll find there. Does it
look familiar?
<http://www.eskimo.com/~scs/C-faq/q14.3.html>
Question 14.3

I'm trying to do some simple trig, and I am #including <math.h>, but I
keep getting ``undefined: sin'' compilation errors.

Make sure you're actually linking with the math library. For instance,
under Unix, you usually need to use the -lm option, at the end of the
command line, when compiling/linking. See also questions 13.25 and 13.26.