Problem with all Simulink embedded coder examples

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so i can not get any of the simulink embedded coder examples to actually generate code.
I have tried several of them as well as making my own very simple model of just a 2 number adder.
Whenever i try to generate code either with CTRL B and or using the generate code wizard i get the exact same error.
The error you would think is benign until you dig further.
### Starting build procedure for: rtwdemo_roll
### Build procedure for rtwdemo_roll aborted due to an error.
Build Summary
Top model targets built:
Model Action Rebuild Reason
rtwdemo_roll Failed Code generation information file does not exist.
0 of 1 models built (0 models already up to date)
Build duration: 0h 0m 24.262s
Index exceeds the number of array elements. Index must not exceed 0
So this error would tell me normally i goofed somewhere except its the same error on every matworks example. I am not building the model just following the instructions.
So i ran the build from matlab to see if i could get anymore diagnostic info and i get this
rtwdemo_roll Failed Code generation information file does not exist.
0 of 1 models built (0 models already up to date)
Build duration: 0h 0m 19.946s
Index exceeds the number of array elements. Index must not exceed 0.
Error in coder.make.internal.applyMsvcEnvironment>i_runMsvcSetupCommand (line 82)
deltaNames{i} = toks{i}{1};
Error in coder.make.internal.applyMsvcEnvironment (line 24)
Error in codebuild>i_setupEnvironment (line 479)
environmentCleanupFcn = coder.make.internal.applyMsvcEnvironment(mexCompDetails);
Error in codebuild (line 142)
environmentCleanupFcn = i_setupEnvironment...
Error in coder.internal.ModelBuilder>i_buildProcedure (line 1523)
compileResult = codebuild(lBuildInfoUpdated, compileBuildOptsUpdated);
Error in coder.internal.ModelBuilder.make_rtw (line 119)
[buildResult, mainObjFolder] = i_buildProcedure...
Error in build_target
Error in build_target
Error in build_standalone_rtw_target
Error in slbuild_private
Error in slbuild_private
Error in sl_feval
Error in slbuild
Error in slbuild
Error in rtwbuild
The error appears to be deeply rooted on line 82 of some buried matlab file. I went to and set a break point there only to find some issue with some enviroment variable and the size of some variable named toks
I am at a complete loss. I have several versions of matlab and have tried them all. I get the same error.
Here is the file that line 82 is causing problems in
function [cleanupFcn, useCachedSettings] = applyMsvcEnvironment(mexCompDetails)
% applyMsvcEnvironment
% Copyright 2021 The MathWorks, Inc.
persistent cachedEnvironmentKey
persistent deltaNames
persistent deltaValues
persistent pathPrepend
persistent pathAppend
% Check if requested environment settings are consistent with cached
% settings
environmentKey = ...
[mexCompDetails.CommandLineShell ' ' mexCompDetails.CommandLineShellArg];
useCachedSettings = ~isempty(cachedEnvironmentKey) && ...
strcmp(environmentKey, cachedEnvironmentKey);
if ~useCachedSettings
% Need to determine environment settings by running VCVARSALL.BAT
[deltaNames, deltaValues, pathPrepend, pathAppend] = ...
% Capture original value of each environment variable that will be set
variablesToRestore = deltaNames;
originalValues = cell(size(variablesToRestore));
for i=1:length(originalValues)
originalValues{i} = getenv(variablesToRestore{i});
variablesToRestore{end+1} = 'PATH';
originalPath = getenv('PATH');
originalValues{end+1} = originalPath;
% Cleanup function to restore original environment variables
cleanupFcn = onCleanup(@()i_setEnvVars(variablesToRestore, originalValues));
% Apply the new environment settings
i_setEnvVars(deltaNames, deltaValues);
setenv('PATH', [pathPrepend originalPath pathAppend]);
% Finally, allow the environment variables to be reused next without
% re-running VCVARSALL.BAT
cachedEnvironmentKey = environmentKey;
function i_setEnvVars(vars, values)
for i=1:length(vars)
setenv(vars{i}, values{i});
function [deltaNames, deltaValues, pathPrepend, pathAppend] = ...
% Generate batch file content to print out the environment after
markerOutput = '===PRINT ENVIRONMENT===';
trailer = ['echo ' markerOutput];
trailer = [newline trailer newline newline 'SET'];
batchFileName = [tempname '.bat'];
coder.make.internal.writeMsvcSetup(batchFileName, mexCompDetails, ...
'Trailer', trailer);
% Capture original environment
[~, originalVars] = system('SET');
originalVars = splitlines(string(originalVars));
% Capture environment after running the setup command
[~, updatedVars] = system(batchFileName);
updatedVars = regexprep(updatedVars, ['.*\s+' markerOutput '\s+'], '');
updatedVars = splitlines(string(updatedVars));
% Identify variables that changed
deltaVars = setdiff(updatedVars, originalVars);
toks = regexp(deltaVars, '(\w+)=(.*)', 'tokens', 'once');
deltaNames = cell(size(toks));
deltaValues = cell(size(toks));
for i=1:length(toks)
deltaNames{i} = toks{i}{1};
deltaValues{i} = toks{i}{2};
% If the path was updated identify the part that was prepended
pathIdx = strcmpi(deltaNames, 'PATH');
if sum(pathIdx)>0
assert(sum(pathIdx)==1, 'Must be only one match for PATH')
updatedPath = deltaValues{pathIdx};
originalPath = getenv('PATH');
% VCVARSALL.BAT might strip off a trailing semicolon: apply the same
% cleanup to the path that we check for in the updated path
originalPathCleaned = regexprep(originalPath, ';+$', '');
% Running VCVARSALL typically prepends and in some cases additionally
% appends to the path
k = strfind(updatedPath, originalPathCleaned);
if isempty(k)
assert(false, ...
['After running VCVARSALL.BAT, the updated path, "%s", ' ...
'must contain the original path, "%s"'], ...
updatedPath, originalPathCleaned);
pathPrepend = updatedPath(1:k(end)-1);
pathAppend = updatedPath(k(end)+length(originalPathCleaned):end);
deltaNames = deltaNames(~pathIdx);
deltaValues = deltaValues(~pathIdx);
pathPrepend = '';
pathAppend = '';
Anyone have any ideas?

Accepted Answer

Robert Scott
Robert Scott on 18 Jan 2023
Moved: Fangjun Jiang on 18 Jan 2023
If anyone else runs into this, the solution was a stray double quote in my path variable causing all the models to fail.
The solution was found in this stack overflow post.

More Answers (0)




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