Matlab mex lstdc++ not found

I'm trying to compile a mex file in matlab. I'm running Ubuntu 14.04 and Matlab R2014b. The first dependency issue I faced was the GCC which needed a version 4.7.x, while my system was running 4.8.x. I fixed that by changing mexopts.sh and putting that in my Matlab/R2014 path. Now, I get this error:

mex ic.c -largeArrayDims -v
-> mexopts.sh sourced from directory (DIR = $PREF_DIR) **FILE = /home/kyouma/.matlab/R2014b/mexopts.sh
----------------------------------------------------------------**
-> MATLAB = /usr/local/MATLAB/R2014b
-> CC = gcc-4.7
-> CC flags: CFLAGS = -ansi -D_GNU_SOURCE -fexceptions -fPIC -fno-omit-frame-pointer -pthread CDEBUGFLAGS = -g COPTIMFLAGS = -O -DNDEBUG CLIBS = -Wl,-rpath-link,/usr/local/MATLAB/R2014b/bin/glnxa64 -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmx -lmex -lmat -lm -lstdc++ arguments =
-> CXX = g++-4.7
-> CXX flags: CXXFLAGS = -ansi -D_GNU_SOURCE -fPIC -fno-omit-frame-pointer -pthread CXXDEBUGFLAGS = -g CXXOPTIMFLAGS = -O -DNDEBUG CXXLIBS = -Wl,-rpath-link,/usr/local/MATLAB/R2014b/bin/glnxa64 -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmx -lmex -lmat -lm arguments =
-> FC = gfortran
-> FC flags: FFLAGS = -fexceptions -fbackslash -fPIC -fno-omit-frame-pointer FDEBUGFLAGS = -g FOPTIMFLAGS = -O FLIBS = -Wl,-rpath-link,/usr/local/MATLAB/R2014b/bin/glnxa64 -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmx -lmex -lmat -lm arguments =
-> LD = gcc-4.7
-> Link flags: LDFLAGS = -pthread -shared -Wl,--version-script,/usr/local/MATLAB/R2014b/extern/lib/glnxa64/mexFunction.map -Wl,--no-undefined LDDEBUGFLAGS = -g LDOPTIMFLAGS = -O LDEXTENSION = .mexa64 arguments =
-> LDCXX =
-> Link flags: LDCXXFLAGS = LDCXXDEBUGFLAGS = LDCXXOPTIMFLAGS = LDCXXEXTENSION = **arguments =
----------------------------------------------------------------**
-> gcc-4.7 -c -I/usr/local/MATLAB/R2014b/extern/include -I/usr/local/MATLAB/R2014b/simulink/include -DMATLAB_MEX_FILE -ansi -D_GNU_SOURCE -fexceptions -fPIC -fno-omit-frame-pointer -pthread -O -DNDEBUG "ic.c"
-> gcc-4.7 -O -pthread -shared -Wl,--version-script,/usr/local/MATLAB/R2014b/extern/lib/glnxa64/mexFunction.map -Wl,--no-undefined -o "ic.mexa64" ic.o -Wl,-rpath-link,/usr/local/MATLAB/R2014b/bin/glnxa64 -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmx -lmex -lmat -lm -lstdc++
/usr/bin/ld: cannot find -lstdc++
collect2: error: ld returned 1 exit status mex: link of ' "ic.mexa64"' failed.
Unable to complete successfully.

I tried looking for it, but all the libstdc++ issues I found seem to have something to do with the 6.4 version, and mine doesn't pop any error that seems specific as to the version.

I am new to ubuntu, so any light anyone can throw on this would be greatly appreciated. Thank you.

1 Answer

I had to install g++. @steeldriver, thank you for pointing me in the right direction :) I specifically installed a version 4.7 of g++ because my gcc that matlab needed was only 4.7.x,and the mex compilations with my version of matlab were not compatible with the default 4.8 that ubuntu 14.04 runs.