rosmake gmapping

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Hello,

We have freight and I am trying to build map on it but getting below error while i ran the command rosmake gmapping. do you have any idea why i am getting this error? Am i missing any step? Please note that we only have freight. Thanks.

hardik@freight19:~$ rosmake gmapping [ rosmake ] rosmake starting...
[ rosmake ] Packages requested are: ['gmapping']
[ rosmake ] Logging to directory /home/hardik/.ros/rosmake/rosmake_output-20160209-133940
[ rosmake ] Expanded args ['gmapping'] to: []
[ rosmake ] WARNING: The following args could not be parsed as stacks or packages: ['gmapping']
[ rosmake ] ERROR: No arguments could be parsed into valid package or stack names.