How can I get static array instead of dynamic emxArray_real_T

hello friends, I faced a problem that I can't use it in MCU.

if true
  function [ Mshifted, f] = Func1( m ,ts,df)
fs = 1/ts;
Mshifted = zeros(1,4096);
f = zeros(1,4096);
%t = Time_Vector(-0.2/2,0.001,0.2/2);
[M,m1,df1]=fftseq(m,ts,df); 
M=M/fs;
f=[0:df1:df1*(length(m1)-1)]-fs/2; 
Mshifted = abs(fftshift(M));
end
end

and result of code generation

if true
  void Func1(const double m[4096], double ts, double df, emxArray_real_T *Mshifted,
         emxArray_real_T *f)
end

emxArray_real_T include pointer and in MCU ,static array must be used because of fragmentation.How can I get static array as output.Easy to set about input.