Why Embedded coder generates include to standard C library (<stddef.h> and <string.h>)? How to remove theese includes?

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Imen 2014-10-17

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回答： mahmoud yahia 2022-1-30

I am using 2014b version. I need to integrate the generated code in an embedded SW, and I don't want to have external standard library include. When I generate the code, I have always in model.h generate file : #include stddef.h #include string.h

How to remove theese includes? I understand that they are needed for the initialization function (use of "memset" and "NULL").

I need to keep the I/O and datas initialization without having external includes. Thank you for you're help

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Answer 1

User_in_Gim 2017-3-24

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编辑：User_in_Gim 2017-3-24

在 MATLAB Online 中打开

I know it's an old question, but I faced with this problem 2 days ago. When I wanted to generate my simulink model with ert target, I had external standard librairies stddef.h and string.h included.

To solve this, I have to go in the Model Configuration Parameters Panel > Optimisation then check boxes :

    * Remove root level I/O zero initialization
    * Remove internal data zero initialization

and uncheck the box

* Use memset to initialize floats and double to 0.0

Now, I have no more librairies stddef.h and string.h included, Null or memset and rtmSetErrorStatus functions.

This was working for me and I hope it will help someone with the same problem.

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Sabarirajan 2020-6-19

Hi, I did the configuration but stil I'm getting stddef.h included in main.

Is any block can create this library ?

How to check in which line of code or block is reqesting this stddef.h file

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Answer 2

Mike Hosea 2014-10-18

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编辑：Mike Hosea 2014-10-18

I know next to nothing about it, but perhaps use the CRL (Code Replacement Library) to replace the standard memset with one that you will provide, perhaps replace the NULL definition as well. Not sure.

http://www.mathworks.com/help/rtw/examples/replacing-math-functions-and-operators.html

Hopefully somebody will happen along with more information.