Failed to build model using LCC in rapid accelerator mode

i got the following errors when i try to run the model in Matlab.

it seems to be problem with compiler. can somebody help?

### Building the rapid accelerator target for model: model

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

Warning model_capi_host.c: 13 Missing prototype for 'getRootMappingInfo'

### Build procedure for model aborted due to an error.

Build Summary

Top model rapid accelerator targets built:

Model Action Rebuild Reason

=================================================================================

model Failed Code generation information file does not exist.

0 of 1 models built (0 models already up to date)

Build duration: 0h 0m 33.381s

Error using init_model

Failed to build model 'model' using LCC in rapid accelerator mode, please consider

using a different compiler instead. For details on supported compiler versions, see

https://www.mathworks.com/support/compilers/current_release

Caused by:

Error using init_model

Building host-based CAPI for 'model' failed.

Error using init_model

cpp: "d:\model\slprj\raccel\model\model_capi.c":426 compiler limit:

line too long (more than 20290 chars)

>>

[Luiz Augusto Vendramini]

Hello. Have you solved this problem?

[Umar]

Hi Abdullah,

To address the missing files issue, you can try the following steps:

Check if the 'codedescriptor.dmr' files are present in the expected directories.

Ensure that the paths to these files are correctly specified in your Matlab project settings.

If the files are missing, you may need to regenerate them by rebuilding the model or updating the code generation settings.

Regarding the compiler limit error, you can consider the following solutions:

Check the line in the 'model_capi.c' file that exceeds the compiler limit (more than 20290 characters) and try to refactor the code to reduce its length.

If refactoring the code is not feasible, you may need to adjust the compiler settings or use a different compiler that can handle longer lines.

I hope this answers your question.

[Abdullah]

@Luiz Augusto Vendramini not yet

Answer 1

[Jatin]

Hi @Abdullah,

The warning message you are receiving appears if an unrelated 'codedescriptor.dmr' file is found on the search path during the model build stage.

You can ignore these warnings, or you can also update your release as this is fixed in R2023a.

This is answered by MathWorks Support Team in the following answer:

https://www.mathworks.com/matlabcentral/answers/1942974-why-do-i-get-warnings-about-file-codedescriptor-dmr-not-found-for-each-of-my-referenced-models?s_tid=answers_rc1-2_p2_MLT

The error message about “compiler limit: line too long” occur if you do not have a configured supported compiler.

You can check the configured compiler on your MATLAB by using the following command:

mex -setup 

You can go through the relevant MATLAB Answer and the "Supported and Compatible Compilers" documentation through the following links:

https://www.mathworks.com/matlabcentral/answers/345548-why-does-running-simulink-in-rapid-acceleration-mode-cause-a-compiler-error-indicating-that-the-line

https://www.mathworks.com/support/compilers/current_release

Hope this helps!