error by similink external mode : gmake: *** No rule to make target `FAST_SFunc.obj', needed by `../OpenLoop.rxw64'. Stop.

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David Kenko 2016-5-9

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回答： Pratik 2024-7-17

Hello, I try a simulink-model with s-function in the External mode to simulate. I get this error: gmake: * No rule to make target `FAST_SFunc.obj ', needed by` ../OpenLoop.rxw64'. Stop.

Please, does anyone have an idea how I could solve the problem. thank you

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Giusy 2017-7-13

Ciao David, I have the same problem. Did you solve it? How? Giusi

David Eduardo Garcia Luna Romero 2017-11-2

I am having the same problem and have not been able to solve it yet. Were you able to solve this?

In my case it was when using an s-function from a solver.

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Answer 1

Pratik 2024-7-17

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Hi David,

The error "No rule to make target" is typically thrown by the make/gmake build automation tool because it can't find the instructions on how to create a particular file or target. This can happen for several reasons:

Incorrect Path: Your project path, source file path and/or include folder path contains white spaces that the "make" tool cannot handle.
Missing File: It could also mean that the indicated file is missing.
Windows Character Length Limit: A long directory path name could also violate the Windows 256-character length limit and result in this error.
Simulink Real-Time Character Length Limit: The error could be due to the third-party QNX compiler used by Speedgoat hitting the character length limit

Please refer to the following MATLAB Answer post for more detail:

www.mathworks.com/matlabcentral/answers/814790-why-do-i-get-the-build-error-no-rule-to-make-target

I hope this helps!