R2014a MATLAB Compiler (mcc) on Linux throws "Invalid character was detected."

Just wanted to share the solution found as it took me ages as mcc does not provide any reference to which files cause the warning messages ...

(BTW - mcc on Windows runs just fine without these warnings.)

The cause is the presence of non UTF8 characters in m-code. MATLAB on Linux has UTF8 as default character set whilst MATLAB on Windows may have a different character set such as windows-1252.

Use

feature('DefaultCharacterSet')

to determine this.

Anyways - it can be a pain to identify the m-files that cause the warning. The linux shell command below helped me a lot:

find . -name *.m -type f | xargs -I {} bash -c "iconv -f utf-8 -t utf-16 {} &>/dev/null || echo {}" > utf8_fail

see: http://blog.endpoint.com/2010/04/tip-find-all-non-utf8-files.html

[Michael Steinbock]

Thanks! I also found this useful for then identifying the parts of the files that had the issues:

grep -axv '.*' myFunction.m

Also, for the inexperienced (like me), RAB's code will create a file called utf8_fail that will contain a list of the offending .m files.

Answer 1

[Swarom Muley]

New to Matlab