Sine function using inline assembly

static inline float sin(float angle)
{
  float answer;
  asm ("fsin" : "=t" (answer) : "0" (angle));
  return answer;
}

Saving debug symbols to separate file

objcopy --only-keep-debug "${tostripfile}" "${debugdir}/${debugfile}"
strip --strip-debug --strip-unneeded "${tostripfile}"
objcopy --add-gnu-debuglink="${debugdir}/${debugfile}" "${tostripfile}"

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source: stackoverflow