SUMO returns error using "system" command on a Linux machine, while it works properly inside Terminal

I have SUMO version 0.19.0 installed on a 64-bit Linux machine. The OS is Ubuntu 12.04.

Also, I have MATLAB R2014b running on it.

To run SUMO (or NETCONVERT) inside MATLAB, I use "system" command. But, I receive error which I do not know the source. Interestingly, when I run SUMO (or NETCONVERT) inside Terminal, it works properly. So, I was wondering if it is because of the way MATLAB opens Shell and passes the arguments or something else.

Does anybody know anything about it?

These are the Error messages when i run SUMO (or NETCONVERT):

>> [bStatus, strResult] = system('netconvert -c mySumo.netc.cfg', '-echo');

netconvert: /usr/local/MATLAB/R2014b/bin/glnxa64/libtiff.so.5: no version information available (required by /usr/lib/x86_64-linux-gnu/libpoppler.so.44)
netconvert: /usr/local/MATLAB/R2014b/bin/glnxa64/libcrypto.so.1.0.0: no version information available (required by /usr/lib/libpq.so.5)
netconvert: /usr/local/MATLAB/R2014b/bin/glnxa64/libssl.so.1.0.0: no version information available (required by /usr/lib/libpq.so.5)
netconvert: symbol lookup error: /usr/lib/libgdal.so.1: undefined symbol: _ZN11xercesc_3_111InputSource11setEncodingEPKt

>> [bStatus, strResult] = system('sumo -c mySumo.sumo.cfg', '-echo');

sumo: symbol lookup error: sumo: undefined symbol: _ZN11xercesc_3_114TranscodeToStrC1EPKtPKcPNS_13MemoryManagerE

[Matt Roelle]

I have a similar error with svn:

>> !svn up
svn: /usr/local/MATLAB/R2015b/bin/glnxa64/libssl.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libserf-1.so.1)
svn: /usr/local/MATLAB/R2015b/bin/glnxa64/libcrypto.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libserf-1.so.1)

It successfully updates, but gives those warnings.

[Walter Roberson]

Those undefined symbols are mangled names corresponding to

xercesc_3_1::InputSource::setEncoding(unsigned short const*)

and to

 xercesc_3_1::TranscodeToStr::TranscodeToStr(unsigned short const*, char const*, xercesc_3_1::MemoryManager*)

xercesc appears to be the Apache Xerces Project, which is an XML parser.

Answer 1

[Walter Roberson]

Difficulties like this are caused by MATLAB using different library path environment variable values than the program expects. On Linux, LD_LIBRARY_PATH is typically the key variable; on OS-X that can have effect but DYLD_LIBRARY_PATH tends to be used instead.

At the shell prompt, ask your shell to display the LD_LIBRARY_PATH variable. Then inside MATLAB, use system or ! to ask your shell to display the variable, or use

getenv('LD_LIBRARY_PATH')

(For OS-X look at DYLD_LIBRARY_PATH instead)

you will find that either MATLAB has removed something from the path or else that MATLAB has added something earlier on the path that is taking priority when the libraries are being searched for.

http://www.mathworks.com/matlabcentral/answers/98760-how-can-i-set-environment-variables-for-compiler-applications-from-bash-ksh-sh-in-matlab-7-5-r2

http://www.mathworks.com/matlabcentral/answers/27762-executing-unix-commands-set-in-path-in-matlab-does-not-work-with-unix-command

[Michael Francis]

I am using ubuntu 14.04 with Matlab R2016B, and have a problem at run time with my C++ mex/sfunction:

Error while obtaining sizes from MEX S-function '..._cpp' in 'sfunc_.../S-Function'.
  Invalid MEX-file '..._cpp.mexa64': /usr/lib/libgdal.so.1: undefined symbol: _ZN11xercesc_3_111InputSource11setEncodingEPKt
  Component: Simulink | Category: Block error

I compared the LD_LIBRARY_PATH from my command terminal and Matlabs command terminal and saw that Matlabs ld_library_path had other earlier paths in it, compared what I saw on my command terminals ld_library_path output. So I updated Matlabs ld_library_path to have the command terminal ld_library_path output to be earlier like you explain in your answer, but that still did not solve my problem.

I have created a matlab question here(https://www.mathworks.com/matlabcentral/answers/319366-error-while-obtaining-sizes-from-mex-s-function-need-help-please) for more information. Do you think you know why this is happening?

Mike