Problems install control package

[Beverly M]

I wish to install the signal package so I need to install control. I keep getting the message below. I haven't used packages on Octave before so I would be grateful for any help.
Thanks.
 
octave-3.6.4.exe:15> pkg install -forge control
make: /bin/sh: Command not found
make: *** [slicotlibrary.a] Error 127
'make' returned the following error: make: Entering directory `/tmp/oct-9/control/src'
tar -xzf slicot.tar.gz
mv slicot/src/*.f .
make: Leaving directory `/tmp/oct-9/control/src'
error: called from 'pkg>configure_make' in file C:\Software\Octave-3.6.4\share\octave\3.6.4\m\pkg\pkg.m near line 1385, column 9
error: called from:
error:   C:\Software\Octave-3.6.4\share\octave\3.6.4\m\pkg\pkg.m at line 827, column 5
error:   C:\Software\Octave-3.6.4\share\octave\3.6.4\m\pkg\pkg.m at line 383, column 9