MATLAB: Cd funtion

cdcompilerMATLAB Compilermatlab function

when you use cd funtion and the message you get is MCC use of cd funtion is problematic, what do you do?

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From Loren Shure's Blog on Writing Deployable Code by guest-blogger Peter Webb:

Don't rely on the current directory (cd) or changes to the MATLAB path (addpath) to control the execution of M-files. The path of a deployed application is determined at compiled time, and remains forever fixed. The current directory is never on the path in a deployed application. In the code below, cd-ing to the stringFcns directory does not make stringFcns/add shadow mathFcns/add. The order of these functions at runtime depends on what their order was at compile time. This causes errors.

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MATLAB: Is there an additional directory level between the ctfroot and the files I include with the compiled application

This behavior is expected, and is a change which was introduced in R2018b.

Any relative pathing used within your compiled code will still work.

MATLAB: Standalone executable opens with warning for missing directory paths

This is possible because the matlabrc file on the machine where the executable was compiled might have modified settings (or a custom startup file).

MATLAB compiler when compiling picks up these (startup files). When the deployed application is run, it again tries to execute these startup file, but will throw up warnings if the path is not present.

Because of this reason, I'd recommend using the isdeployed (and ismcc) function to customize matlab start up routines.

http://www.mathworks.com/help/toolbox/compiler/ismcc.html

if (~isdeployed || ~ismcc)
  % Custom path additions, if not a deployed application or mcc
  addpath(...);
end

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MATLAB: Is there an additional directory level between the ctfroot and the files I include with the compiled application

MATLAB: Standalone executable opens with warning for missing directory paths

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