Newbie Question - how to call IPP functions

[Derek_Woodman]

I am new the the IPP. I have the compiler and everything installed and now I am trying to go through some coding examples. I mainly just want to use the FFT function calls in the IPP library. I'm trying to compile the following code:

#include

int main(){
Ipp32f src[64] = {0}, dst[64];
IppiFFTSpec_R_32f *spec;
IppStatus status;
src[0] = -3; src[9] = 1;
ippiFFTInitAlloc_R_32f(&spec, 3, 3, IPP_FFT_DIV_INV_BY_N, ippAlgHintAccurate);
status = ippiFFTFwd_RToPack_32f_C1R( src, 8*sizeof(Ipp32f), dst, 8*sizeof(Ipp32f), spec, 0 );
ippiFFTFree_R_32f( spec );
return 0;
}

I found it in the documentation on the FFT functions.

I try to run the compiler and get the following erros:

icc main.c
/tmp/icc9MWW88.o: In function `main':
main.c:(.text+0x85): undefined reference to `ippiFFTInitAlloc_R_32f'
main.c:(.text+0xa8): undefined reference to `ippiFFTFwd_RToPack_32f_C1R'
main.c:(.text+0xb5): undefined reference to `ippiFFTFree_R_32f'

Thanks in advance to anyone that helps. I've read that all you need to include is the ipp.h file and you should be good to go. I don't know why this is so difficult.

Thanks!

[Vladimir_Dudnik]

Hello,

it seems you did not link with IPP libraries. You can do this explicitely by providing appropriate options to your linker or in case of Intel Compiler you can specify /ipp option at compile time to let compiler do care on this staff. Please check details with compiler documentation as personally I prefer to use explicit settings, so may not aware on all details of /ipp option.

Regards,
Vladimir

[Ying_H_Intel]

Just for your reference

The KB : How to build IPP application in Linux environment
http://software.intel.com/en-us/articles/how-to-build-ipp-application-in-linux-environment/
may address your question.

Regards,
Ying