cannot install optim-1.0.0.tar.gz using pkg

[Evan]

I'm using octave 2.9.12

octave:2> pkg install optim-1.0.0.tar.gz
make: mkoctfile: Command not found
make: *** [leval.oct] Error 127
export INSTALLDIR="/home/evan/octave/optim-1.0.0"; make -C
/tmp/oct-omXrAt/optim-1.0.0/src
make: Entering directory `/tmp/oct-omXrAt/optim-1.0.0/src'
mkoctfile -s leval.cc
make: Leaving directory `/tmp/oct-omXrAt/optim-1.0.0/src'

error: 'make' returned the following error: make: Entering directory
`/tmp/oct-omXrAt/optim-1.0.0/src'
mkoctfile -s leval.cc
make: Leaving directory `/tmp/oct-omXrAt/optim-1.0.0/src'
error: called from `pkg:configure_make' in file
/usr/share/octave/2.9.12/m/pkg/pkg.m near line 824, column 2
octave:2>