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problem when compiling fft_excample with gcc

Question asked by Kauppi.Teijo on Jun 18, 2014
Latest reply on Jun 18, 2014 by Clive One

i'v try to compile example fft code using stm dsp libraries. Got this error message:

/usr/gcc-arm-none-eabi-4_7-2013q1/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/armv7e-m/fpu/libm.a(lib_a-wf_sqrt.o): In function `sqrtf':
wf_sqrt.c:(.text.sqrtf+0x98): undefined reference to `__errno'
wf_sqrt.c:(.text.sqrtf+0xa2): undefined reference to `__errno'
collect2: error: ld returned 1 exit status

Any ideas how to solve this?