How can I use MATLAB C/C++ compiler for "imread" function

clc 
filename = imgetfile;
I0 = imread(filename);
I0 = rgb2gray(I0);
imshow(I0,[])

Answer 1

[Walter Roberson]

It is not allowed to generate C code for imread() .

imread() invokes a series of different libraries depending upon the image type. Some of the libraries are moderately large. For example the TIFF library is approximately 1 3/4 megabytes of .zip source, which compiles down to about 600 Kb of binary.

If you want to be able to read image files in your C/C++ code then push your imread() into a routine and coder.external() the routine and link to appropriate source code.