Deployment Failures

After the application is working on the test machine, failures can be isolated in end-user deployment. The end users of your application need to install MATLAB^® Runtime on their machines. MATLAB Runtime includes a set of shared libraries that provides support for all features of MATLAB. If your application fails during end-user deployment, the following questions may help you isolate the problem.

Note

There are a number of reasons why your application might not deploy to end users, after running successfully in a test environment. For a detailed list of guidelines for writing MATLAB code that can be consumed by end users, see Write Deployable MATLAB Code

 Is MATLAB Runtime installed?

Installing MATLAB Runtime is required for any of the deployment targets. For details, see Install and Configure MATLAB Runtime.

 If running on Linux or macOS, did you update the dynamic library path after installing MATLAB Runtime?

For information on setting the path on a deployment machine after installing MATLAB Runtime, see Set MATLAB Runtime Path for Deployment.

 Do you receive an error message about a missing DLL?

Error messages indicating missing DLLs such as mclmcrrtX_XX.dll or mclmcrrtX_XX.so are generally caused by an incorrect installation of MATLAB Runtime. For information on installing MATLAB Runtime, see Install and Configure MATLAB Runtime.

It is also possible that MATLAB Runtime is installed correctly, but the PATH,LD_LIBRARY_PATH, or DYLD_LIBRARY_PATH variable is set incorrectly. For information on setting environment variables, see Set MATLAB Runtime Path for Deployment.

Caution

Do not solve these problems by moving libraries or other files within the MATLAB Runtime folder structure. The MATLAB Runtime system is designed to accommodate different MATLAB Runtime versions operating on the same machine. The folder structure is an important part of this feature.

 Do you have write access to the necessary folders?

The first operation attempted by an application with compiled MATLAB code is extraction of the deployable archive. If the archive is not extracted, the application cannot access the compiled MATLAB code and the application fails.

There are three possible folders where the deployable archive is extracted:

• If the deployable archive is embedded and you are using the default environment settings, the archive extracts into the current user’s temp folder.

• If the deployable archive is embedded and you set the environment variable MCR_CACHE_ROOT, the archive extracts into the folder specified by MCR_CACHE_ROOT.

• If the deployable archive is not embedded, the archive extracts into the current folder of the component.