#5 rpmbuild failed

[cuti cuteo]

when i tried to run rpmbuild -ta bridge-utils-1.4.tar.gz i got the following error:

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)

what should i do now?