RPM build error

[a bv]

Hi list,

On a Redhat EL 5.x machine i have used the command rpmbuild -ta
filename.tar tu build a rpm package but i had the below error. Im new
to building rpm packages so im in a need to fix this.

error: Name field must be present in package: (main package) error:
Version field must be present in package: (main package) error:
Release field must be present in package: (main package) error:
Summary field must be present in package: (main package) error: Group
field must be present in package: (main package) error: License field
must be present in package: (main package)

regards