Error while linking libarm_cortexM3l_math.a on DUE

Official Hardware Mega Due
1

Hi,
I tried to link libarm_cortexM3l_math.a on DUE for performing FFT . I referred the following link before doing so.

http://forum.arduino.cc/index.php/topic,140107.0.html

However, in spite of modifying platform.txt file and adding the library in arduino_due_x folder, I get the following error after compiling. Kindly help.

fft_may15.cpp.o: In function `loop':
E:\arduino\arduino-1.5.6-r2-windows\arduino-1.5.6-r2/fft_may15.ino:304: warning: undefined reference to `arm_cfft_radix4_init_f32'
E:\arduino\arduino-1.5.6-r2-windows\arduino-1.5.6-r2/fft_may15.ino:307: warning: undefined reference to `arm_cfft_radix4_f32'
E:\arduino\arduino-1.5.6-r2-windows\arduino-1.5.6-r2/fft_may15.ino:312: warning: undefined reference to `arm_cmplx_mag_f32'
E:\arduino\arduino-1.5.6-r2-windows\arduino-1.5.6-r2/fft_may15.ino:315: warning: undefined reference to `arm_max_f32'
2

Errors are no longer there.
Simply restarting the IDE did the trick :slight_smile:

Thanks to raalst and cmaglie for the steps suggested in http://forum.arduino.cc/index.php/topic,140107.0.html