Undefined reference to 'pow()' using <math.h>

[ktg024]

Hi all
I m using the gcc compiler, and when i tried to use pow() function it gives error like this,

undefined reference to `pow'.........................

Then i used -lm option in right place again it gives the same error......

Plz Give me a soln........

Thanks allll.....................

[vijaya10]

i have a doubt in ur question ,r u using -lm command after cc or gcc command ,while compilation ,if it is so ur code should work perfectly.try it out

[sicarie]

Well, let's see your code.

PS - 'leet speak, SMS abbreviations, etc... are not allowed on this site, please use full English words and grammar as best you can. Thanks!

[ktg024]

I used the command like this

msp430-gcc -lm -mmcu=msp430x149 -o2 -wall -g file.c -o file.elf

this doesn't work so please give me another way to work it out...........

[Laharl]

Can you post the code where you call pow()?

[ktg024]

Can you post the code where you call pow()?

int main(void){
float a,b,c;
c=pow(10,2);
}

[sicarie]

Interesting. That works for me using G++. The only things I can think of are either that you haven't properly included math.h, or that you're using warning levels high enough to get mad at you that you're putting in two ints and returning a float.

[Sarang Bhat]

the filename for math.h is renamed to cmath in linux..
Why dont you try using
#include <cmath> ?