Hi Gourav,
The error message generated by the gcc compiler suggests that the "gcc" is unable to find the file which have to be compiled.
This can be possible due to two reasons:
1- The path of the file which have to be compiled by the "mex" command is incorrect so "gcc" is unable to find the file.
2- The permission to access the file or the directory is not available or provided to the "gcc", so it is unable to compile the file.
To verify whether there is issue with the permissions, please execute the below command in the MATLAB Command Window:
cd(matlabroot)
cd extern/examples/mex
mex yprime.c -v
The output of the above command will provide information if there are any issues with permission or not, by showing error such as:
Error using mex
Access denied; check that you have permissions to access 'C:\Program Files\MATLAB\R2017b\extern\examples\mex'.
If there is any permission or access issue, then the solution is to have the admin access to the file or directory or install the MATLAB release in another location where the permission access is available.
