Undefined reference to pow

[Trespasser]

I'm embarrassed. I can't make this go:

#include <math.h>

main(int argc, char ** argv)
{
double result;

result = pow(2.0, 3);

}

I get undefined reference to pow.

Any clues?

[Neelesh Bodas]

On Sep 21, 11:45 am, "Trespasser" <NOSPAM@NOSPAMwrote:

I'm embarrassed. I can't make this go:

#include <math.h>

prefer #include <cmathinstead of <math.h>

>
main(int argc, char ** argv)

missing return type

{
double result;

result = pow(2.0, 3);

}

I get undefined reference to pow.

Thats a linker error, not a compilation error. Are you linking the
appropriate libraries?

-N

[Trespasser]

"Neelesh Bodas" <ne***********@gmail.comwrote in message
news:11*********************@z24g2000prh.googlegro ups.com...

On Sep 21, 11:45 am, "Trespasser" <NOSPAM@NOSPAMwrote:

Thats a linker error, not a compilation error. Are you linking the
appropriate libraries?

-N

Thanks Neelesh for the very quick reply.

Ah, I understand. I need to maybe link in a a mathematics library module
when I compile with GCC. If that's not exactly it, then I think I'm back on
track a bit. Thanks.

[Trespasser]

Yep. 'GCC -lm source.c' fixed it!

Thanks again.

"Trespasser" <NOSPAM@NOSPAMwrote in message
news:46***********************@per-qv1-newsreader-01.iinet.net.au...

Thanks Neelesh for the very quick reply.

Ah, I understand. I need to maybe link in a a mathematics library module
when I compile with GCC. If that's not exactly it, then I think I'm back
on track a bit. Thanks.