Setup MEX compiler for R2014a for Linux
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Ubuntu 14.04 comes with GCC 4.8. Matlab 2014a only supports up to GCC 4.7. When I use 2013a I can set the mexopts.sh script to use GCC-4.7 by doing the following
1) In matlab, type mex -setup and press 1 to copy mexopts.sh to ~/.matlab/R2013b/mexopts.sh
2) From the terminal, edit the file ~/.matlab/R2013b/mexopts.sh so that CC=’gcc’ change to –> CC=’gcc-4.7′ CCX=’g++’ change to –> CCX=’g++-4.7′
In 2014a the mexopts.sh file does not exist anymore. When I type mex -setup I get the following error:
>> mex -setup C++
Error using mex
No supported compiler or SDK was found. For options, visit http://www.mathworks.com/support/compilers/R2014a/glnxa64.
I know GCC 4.7 is installed because it works for R2013b but how do I set compiler in 2014a?
댓글 수: 1
Awais Ashfaq
2016년 2월 22일
Hi, I have a similar problem. Where should I copy the mexopts.sh? I can't find any folder MATLABversion? Cheers
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Mukul Rao
2014년 7월 14일
Hi,
Beginning version R2014a, MATLAB automatically configures the mex pseudo compiler to use a supported compiler (such as gcc 4.7x ) on your machine. This leaves the use of the command “mex –setup” redundant unless you would like to use a supported compiler that is different from the default selection, or force MATLAB to use an unsupported compiler.
Did you try mexing a simple mex file like “timestwo.c” to check if the “mex file_name.x” command works on R2014a?
>> copyfile(fullfile(matlabroot,'extern','examples','refbook',...
'timestwo.c'), '.', 'f');
>> mex timestwo.c
Make sure you have write permission in your current working directory
댓글 수: 6
Awais Ashfaq
2016년 2월 22일
Hi, I have a similar problem. Where should I copy the mexopts.sh? I can't find any folder MATLABversion? Cheers
wided hechkel
2017년 2월 11일
Hello,
Should i delete the mexopts.sh from MatlabRoot"/bin/mexopts.sh after changing and copying it to ~/.matlab/"MatlabVersion" ?
추가 답변 (3개)
JIAWEI WU
2015년 1월 26일
Thanks Sergey, I copied the file mexopts.h as you said, it works here. it cost me one night to fix it, until now, finally, it has been solved. you are so great!
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Dave
2017년 4월 14일
편집: Dave
2017년 4월 16일
My solution for R2017a on Ubuntu 16.04.
First install the version of GCC Matlab expects:
sudo apt-get install gcc-4.9
Then edit the configuration file to point to this:
cd ~/.matlab/R2017a
sudo chmod 777 mex_C_glnxa64.xml
gedit mex_C_glnxa64.xml
Within that xml file, replace:
Location="$gcc"
with
Location="/usr/bin/gcc-4.9"
Save file and Matlab should no longer produce wrong version warnings.
wided hechkel
2017년 2월 11일
Hello,
Should i delete the mexopts.sh from MatlabRoot"/bin/mexopts.sh after changing and copying it to ~/.matlab/"MatlabVersion" ?
댓글 수: 1
jie Chang
2017년 3월 12일
Hello,could you tell me where the direction ~/.matlab/“MatlabVersion”is? thank you.
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