cannot delete file after complie using mex

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lz liu
lz liu 2016-4-21
评论： xingxingcui 2021-10-14
I complied cpp file using "mex",and created ".mexw64" file, then I modified my cpp file, but a problem occured at this time.
Error using mex
LINK : fatal error LNK1104: cannot open file“matrixMultiply.mexw64”
when I tried delete “matrixMultiply.mexw64", another problem occured:
Warning: File not found or permission denied
I do like this when complie:
blaslib = fullfile(matlabroot,'extern','lib',computer('arch'),'microsoft','libmwblas.lib');
mex('-v', '-largeArrayDims', 'matrixMultiply.cpp', blaslib);
how can I fix it?

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回答（1 个）

Jan
Jan 2016-4-21
This problem occurres, when the mexw64 file is used by another instance of Matlab. Run
clear matrixMultiply
in these Matlab sessions, or close these sessions.
  2 个评论
lz liu
lz liu 2016-4-21
I tried clear matrixMultiply,then when I deleted matrixMultiply.mexw64,the problem still occured.
Warning: File not found or permission denied
xingxingcui
xingxingcui 2021-10-14
Similar question, how can I solve it?
"The operation could not be completed because the file was already open in MATLAB"

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