emlc generates two different c-files for the same supporting function when building two functions, how do you merge them?

Question

Todd 2011-8-19

0
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https://ww2.mathworks.cn/matlabcentral/answers/14081-emlc-generates-two-different-c-files-for-the-same-supporting-function-when-building-two-functions-h

If I have two functions:

function y = fcn1 %#eml
A = [
     8     1
     3     5
     4     9
];
y = pinv(A);

and

function y = fcn2 %#eml
A = [
     1
     4
];
y = pinv(A);

and build them

% build functions
emlc -c -T rtw:lib -report -d fcn1 fcn1.m
emlc -c -T rtw:lib -report -d fcn2 fcn2.m

I get two versions of svd.c. What is the best way to merge the resulting object files? I want to call these functions from the same code.

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Answer 1

Fred Smith 2011-8-22

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Hi Todd,

Just use this idiom emlc -c -T rtw:lib -report -d foo1 fcn1 fcn2

That will product a library with an entry point for fcn1 and fcn2 that shares all the common code like SVD used by both of them.

-Fred

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Todd 2011-8-22

Thanks, this works. (I should have looked more closely at the help file...) I get an error when it tries to compile the report, but the library builds and works as expected.

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Answer 2

Todd 2011-8-19

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https://ww2.mathworks.cn/matlabcentral/answers/14081-emlc-generates-two-different-c-files-for-the-same-supporting-function-when-building-two-functions-h#answer_19275

I suppose I could build a library (.lib) for each function. Then I would have redundant object code, but at least I would have them all. Can I assume that generated supporting functions with the same name are functionally the same?