symbol lookup error: undefined symbol , upon calling C executable from matlab using system command
90 views (last 30 days)
Show older comments
Swagatika on 25 Feb 2012
Upon giving the following command from Matlab command prompt, I get this error:
>>[status, result] = system('./testGEA outDataTest1.txt')
./testGEA: symbol lookup error: /home/swagatika/softwares/qvision.0.8.0/lib/libqvision.so.0: undefined symbol: _ZN12QApplication10commitDataER15QSessionManager
testGEA is an executable file compiled using Qvision library (link : http://qvision.sourceforge.net/testGEA_8cpp.html)
I can successfully execute the command from Linux(ubuntu 10.10) terminal, but calling from Matlab fails.
Walter Roberson on 25 Feb 2012
Possibly a badly linked library http://nrcw.com/?p=546
The symbol might be defined in a library that does not happen to be on the LD_LIBRARY_PATH that is used by MATLAB.
The script that starts MATLAB often sets up LD_LIBRARY_PATH
You could probably use "ldd" to track down which library is supplying the symbol when you execute from the terminal.
More Answers (4)
Find more on Programming Utilities in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!Start Hunting!