Why does my generated code declare functions using the static keyword in R2017b when the generated code used extern in R2016b?
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In MATLAB R2016b, my generated code uses extern when declaring functions for my atomic subsystems.
In MATLAB R2017b, the generated code uses static when declaring the same functions.
I have not changed the models or configuration parameters between releases. My atomic subsystems have compact file packaging enabled.
What is the root cause of the discrepancy?
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MathWorks Support Team
2019-2-20
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This is expected behavior - in MATLAB R2017b, the functions were changed to be declared as 'static' (i.e. file scoped) rather than 'extern' if compact file packaging is enabled:
Since compact file packaging is enabled, you can disable the 'Preserve static keyword in function declarations' option in the 'Code Generation' > 'Code Style' pane of the configuration parameters to generate code with extern declarations rather than static declarations.
<<customerartifacts-mathworks-com-SalesForce-AMER-03465901-2019-02-12_10-25-43.png>>
With this option disabled, the generated code from MATLAB R2017b will use extern function declarations and will be consistent with the code generated by MATLAB R2016b.
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