how to solveerror while running c code in matlab

Question

akshaya balan 2018-3-6

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https://ww2.mathworks.cn/matlabcentral/answers/386707-how-to-solveerror-while-running-c-code-in-matlab

回答： varjak 2018-6-16

I have to run C code.I have installed mingw64 version 5.3 for Matlab 2017b. When I type mex -setup, it says

MEX configured to use 'MinGW64 Compiler (C)' for C language compilation.
Warning: The MATLAB C and Fortran API has changed to support MATLAB
   variables with more than 2^32-1 elements. You will be required
   to update your code to utilize the new API.
   You can find more information about this at:
   http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html.

But, when I run the C file it says

Error using mex The command :\Program' exited with a return value '1'

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James Tursa 2018-3-6

You haven't really told us anything other than you have a mex function that doesn't work. How can we possibly help you without any details? E.g., did you write the mex routine yourself or did you get it from somewhere else? Did you compile it yourself? If so, how did you do it and what compiling options did you select? What input arguments are you giving the mex routine? Etc, etc, etc ...

Walter Roberson 2018-3-6

Some command was run without quotation marks around a file name. However we do not have enough information at the moment to say what.

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Answer 1

varjak 2018-6-16

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https://ww2.mathworks.cn/matlabcentral/answers/386707-how-to-solveerror-while-running-c-code-in-matlab#answer_324950

Hi, I had the same error and the problem was the MinGW64 folder was in a directory with a space in it! For example: "C:\Program Files\MinGW\mingw64". That is why Matlab issues the error at ":\Program", right before the space. Place the folder in another directory - I have it in "C:\MinGW\mingw64" and it works.

Note: In the "MinGW Installation Notes" (<http://www.mingw.org/wiki/Getting_Started>) they state: "The preferred installation target directory is C:\MinGW".