MATLAB: LNK1181: cannot open input file ‘mclmcrrt.lib’

cerrorlinklnk1181MATLABmexmex compilermex fileswindows 8

I am getting a linker error 'LNK1181' when trying to compile a MEX file ' buildMex' with Visual Studio 2013 on Windows 8 using MATLAB 8.1 (R2013a).

LINK : fatal error LNK1181: cannot open input file 'mclmcrrt.lib'

C:\PROGRA~1\MATLAB\R2013A\BIN\MEX.PL: Error: Link of 'mexDemo2.exe' failed.

Error using mex (line 206) Unable to complete successfully.

Error in buildMex (line 7) mex mexDemo2.cpp -v SRL_CV_SIM3.lib

Best Answer

You have to place the path containing the mclmcrrt.lib or mclmcrrt.dll file before the MATLAB root path in the system environment variable 'path'. You can use the path editor to achieve the same.

For example, if you use MATLAB R2014a, and the mclmcrrt8_3.dll file resided in the path C:\MATLAB\R2014a\runtime\win64, then you would have to place this path before the MATLAB root path C:\MATLAB\R2014a.

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MATLAB: Do I receive the LNK2001 error when trying to compile a simple MATLAB program using MATLAB Compiler 4.8 (R2008b)

The LNK2001 error message indicates that the compiler is trying to link against the incorrect version of “mclmcrrt.lib” file.

For example, if the selected compiler is LCC and there exists a copy of the “mclmcrrt.lib” file belonging to some other compiler in the current working directory, then the LNK2001 error will occur due to conflicting compiler symbols.

Verify whether there exists a “mclmcrrt.lib” file in the current directory. If so, you can remove the file since it is not necessary to have this file in the current working directory. The MATLAB Compiler will automatically pick up the correct “mclmcrrt.lib” file depending on the selected compiler during compile time.

MATLAB: MEX: fatal error LNK1181: cannot open input file ‘Files\MATLAB\R2016b\extern\lib\win64\microsoft libmx.lib

The trailing slash in the library include path is causing problems with the 'link' command being run at the command line. Remove the trailing slash from the library include path.

>> mex -v arrayProduct.c '-LC:\Foo bar\lib*\*'

becomes

>> mex -v arrayProduct.c '-LC:\Foo bar\lib'

This issue will occur with any mex file path inclusions (-I, -L, etc) which contain a path with spaces and a trailing backslash.

Best Answer

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MATLAB: Do I receive the LNK2001 error when trying to compile a simple MATLAB program using MATLAB Compiler 4.8 (R2008b)

MATLAB: MEX: fatal error LNK1181: cannot open input file ‘Files\MAT​LAB\R2016b​\extern\li​b\win64\mi​crosoft libmx.lib

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MATLAB: MEX: fatal error LNK1181: cannot open input file ‘Files\MATLAB\R2016b\extern\lib\win64\microsoft libmx.lib