Global variables in Matlab C-Coder

Hi there,

I am using Matlab-C-Coder App to translate a Matlab function to C. In the calling script as well as in the called function I declare the same global variables. These variables are also defined by initial value under 'Define Input Types: Add globals' in the Coder App. I display the values of global variables at the end of the calling script.

I do 'check for issues'; then in the 'test output' area it shows the global variables are all empty! On the other hand, if I initialize them at the beginning of the calling script, output shows still the initial values, but no changes which the called functions may have done to them.

It seems that the exchange of global variables between calling script and called function is somehow a problem for C-coder.

I appreciate your help on this! Best regards, Heinz

[Xiaoying ZHI]

Hi there. Have you solved this problem? I seem like have encountered a similar problem.

[Ryan Livingston]

What release of MATLAB are you using?

Answer 1

[Heinz Roitner]

My problem was caused by the fact that the code was written with R2017b, but was tested on a machine with R2017a. After R2017b was installed there, problem was gone.

--Heinz