7/28/2019 MathWorks United Kingdom - Why Do I Receive an Error
Regarding Missing Mclmcrrt7x
1/3
/21/12 MathWorks United Kingdom - Why do I receive an error
regarding missing mclmcrrt7x.dll when I run my
ww.mathworks.co.uk/support/solutions/en/data/1-1IW46N/
Why do I receive an error regarding missing mclmcrrt7x.dll when
I run my
stand-alone application compiled with MATLAB Compiler?
Date Last Modified: Monday, September 10, 2012
Solution ID: 1-1IW46N
Product: MATLAB Compiler
Reported in Release: R14
Platform: Windows
Operating System: Windows Any
Subject:
Why do I receive an error regarding missing mclmcrrt7x.dll when
I run my stand-alone application compiled with MATLAB
Compiler?
Problem Description:
When I run my stand-alone application that was compiled with
MATLAB Compiler on my deployment machine, I receive an
error message regarding a missing mclmcrrt7x.dll file (where x
is the minor version of the MCR expected to be installed on the
target system).
Solution:
mclmcrrt7x.dll is a run-time library needed to run MATLAB
Compiler generated applications on deployment machines that do
not have MATLAB and MATLAB Compiler installed. This library is
installed during the course of the MATLAB CompilerRuntime (MCR)
installation.
This error typically results from one of two situations:
1. The correct version of MATLAB Compiler Runtime (MCR) is not
installed.
Applications generated with MATLAB Compiler depend on the
version of the run-time library specific to the version of the
MATLAB Compiler that generated the application.
You can find the install program for the MCR in the following
sub directory of the MATLAB installation which created the
program.
$MATLABROOT\toolbox\compiler\deploy\win32\mcrInstaller.exe
or
$MATLABROOT\toolbox\compiler\deploy\win64\mcrInstaller.exe
(where $MATLABROOT is the MATLAB root directory on your machine,
as returned by typing:
matlabroot
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7/28/2019 MathWorks United Kingdom - Why Do I Receive an Error
Regarding Missing Mclmcrrt7x
2/3
/21/12 MathWorks United Kingdom - Why do I receive an error
regarding missing mclmcrrt7x.dll when I run my
ww.mathworks.co.uk/support/solutions/en/data/1-1IW46N/
at the MATLAB command prompt.)
Instructions for installing the MCR are located in the
documentation:
Deploying to End Users :: Deployment Process (MATLAB
Compiler)
http://www.mathworks.com/help/compiler/deploying-to-end-users.html
Running MCRInstaller.exe on the deployment machine will install
the MCR, including the mclmcrrt7x.dll:
$MCRROOT\v$VER\runtime\win32\mclmcrrt$VER.dll
($MCRROOT is the MATLAB Compiler Runtime root directory that was
chosen during the MATLAB Component Runtime
installation process. This typically defaults to something like
C:\Program Files\MATLAB\MATLAB Compiler Runtime. $VER is
the MCR version number without the periods.)
The missing mclmcrrt7x.dll error message will result if you have
not installed the version of the MCR that corresponds to the
version of MATLAB Compiler the application was compiled with.
For example, if you have installed the MCR for MATLAB
Compiler 4.9 (R2008b), version 7.9 of the mclmccrt DLL will be
installed in, for example:
C:\Program Files\MATLAB\MATLAB Compiler
Runtime\v79\runtime\win32\mclmcrrt79.dll.
For releases prior to R2008a the runtime libraries will be
located in a slightly different directory tree:
C:\Program Files\MATLAB\MATLAB Component Runtime\
Now, if an application generated using MATLAB Compiler 4.6
(R2007a) is executed on this computer without installing that
version of the MCR, the "missing mclmcrrt76.dll" error would
result.
2. A second option is that the system's PATH environment
variable was not set correctly.
During the course of the MATLAB Compiler Runtime installation,
the following directory should have been added to yoursystem
path:
$MCRROOT\v$VER\runtime\win32
To work around this issue, manually update the PATH environment
variable on your deployment machine to include the
following directory:
$MCRROOT\v$VER\runtime\win32
For instructions on modifying your system PATH environment
variable, refer to the solution referenced below.
Also note that since these DLLs have different names for each
version of the MCR, multiple versions of the MCR can be
installed on the same machine.
Related Solutions:
How do I set my system path under Windows?
What is the version of the MATLAB Compiler Runtime (MCR) that
corresponds to the version of MATLAB Compiler I
am using?
Do I need to install the MCR on a system that already has MATLAB
installed?
