convert MATLAB to C using emlc function

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highstreets 2011-3-10

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https://ww2.mathworks.cn/matlabcentral/answers/2926-convert-matlab-to-c-using-emlc-function

My final year project involves converting matlab .m file into C. Upon using the emlc function as many suggested, this error popped out:

??? This text contains non-empty top-level expressions. It appears to be a script.

from this command line: emlc -c lnorm

I tried to read through the online help but I can't seem to understand. Are there any steps that I've missed out?

Please help. Many thanks.

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回答（1 个）

Walter Roberson 2011-3-10

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The file you converted: does the first non-empty non-comment line of it start with the word 'function' ? If not then Matlab considers it a "script". elmc is not able to handle scripts (though 2010b might have added that facility, perhaps, in parallel with the Matlab Compiler having had that ability added.)

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Walter Roberson 2011-3-10

Hmmm.... I wonder if it needs cmd.exe ?? 'cmd' should be the normal command shell, I would think.

I don't have a Windows machine available to test this out on.

Kaustubha Govind 2011-3-11

It looks like the C code is being generated, but it failing to compile the code because it chokes on a call to gmake. MATLAB executes gmake by calling into the system shell - in this case, cmd.exe. It finds cmd.exe by looking on the system path. Either your Path or SystemRoot environment variables are corrupted. Try this from MATLAB command prompt:

>> !echo %SystemRoot%

>> !echo %Path%

Now, look for cmd.exe on your system and verify that the parent directory is present on the system Path.

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