message: _IRR_SIMD_ALIGNMENT is actually defined in memory.h
diff: # define __IRR_COMPILE_WITH_SSE3
  # define __IRR_COMPILE_WITH_X86_SIMD_ // SSE 4.2
  # include <immintrin.h>
  -
  -# ifdef __IRR_COMPILE_WITH_AVX
  -# define SIMD_ALIGNMENT 32
  -# else
  -# define SIMD_ALIGNMENT 16 //SSE
  -# endif // __IRR_COMPILE_WITH_AVX
  #endif
  