shared library in linux/ubuntu issue

Question

Nav 2013-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/90474-shared-library-in-linux-ubuntu-issue

评论： Nav 2013-10-17

Hello, Using matlab 2013a in Ubuntu 12.04 I wrote a small function in matlab, compiled it as a c++ shared library and wrote a c++ app to access the data from the library. It compiled ok. The problem is the app only works if I run as sudo. If I run as non sudo, I'm not able to initialize the compiled library, it returns false.

Any ideas? Its really important that I don't run as sudo.

Thank you, -Nav

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Answer 1

David Sanchez 2013-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/90474-shared-library-in-linux-ubuntu-issue#answer_99941

Did you change the ownership of the file and its access permissions?

( unix commands chmod chown)

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Nav 2013-10-17

Yes, I made sure user had read write access to the shared lib and chowned it so user is the owner. In both cases, sudo and non sudo , mclinitialzation seems to return true but libinitialzation returns false in non sudo case.

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