I have a problem with octave when I try to install a package. I can't understand the error mesage.
"pkg load gnuplot-4.2.2 error: package gnuplot-4.2.2 is not installed error: evaluating if command near line 1515, column 7 error: evaluating for command near line 1513, column 5 error: evaluating if command near line 1500, column 3 error: called from `pkg:load_packages' in file `/usr/share/octave/2.9.12/m/pkg/pkg.m' error: evaluating switch command near line 215, column 3 error: called from `pkg' in file `/usr/share/octave/2.9.12/m/pkg/pkg.m' octave:3> pkg install symbolic-1.0.4.tar.gz configure: error: C compiler cannot create executables See `config.log' for more details. cd /tmp/oct-ypR7F8/symbolic-1.0.4/src; ./configure --prefix="/home/jean-marie/octave/symbolic-1.0.4" CC=/usr/bin/gcc CXX=/usr/bin/g++ AR=ar RANLIB=ranlib checking for gcc... /usr/bin/gcc checking for C compiler default output file name...
error: the configure script returned the following error: checking for gcc... /usr/bin/gcc checking for C compiler default output file name... error: called from `pkg:configure_make' in file /usr/share/octave/2.9.12/m/pkg/pkg.m near line 811, column 2"
I use octave in Linux Ubuntu. If i try to install another package, Ihere is the same message. I can't understand the problem.