A basic task for invoking the rpm executable to build a RedHat Package Manager Linux installation file. The task currently only works on Linux or other Unix platforms with rpm support.
| Attribute | Description | Required | 
| specFile | The name of the spec file to be used. This must be relative to the SPECS directory under the root of the RPM set in the topDir attribute. | Yes | 
| topDir | This is the directory which will have the expected
      subdirectories, SPECS, SOURCES, BUILD, SRPMS.  If this isn't specified,
      the default RPM directory of the system (or user, if ~/.rpmmacros defines it) is used (often
      /usr/src/rpm. Defining a topdir will set %_topdir to the specified directory -there is no need to edit your .rpmmacros file. | No, but your build file is very brittle if it is not set. | 
| cleanBuildDir | This will remove the generated files in the BUILD directory. See the the --clean option of rpmbuild. | No | 
| removeSpec | This will remove the spec file from SPECS. See the the --rmspec option of rpmbuild. | No | 
| removeSource | Flag (optional, default=false) to remove the sources after the build. See the the --rmsource option of rpmbuild. | No | 
| rpmBuildCommand | The executable to use for building the RPM.
      Defaults to rpmbuildif it can be found orrpmotherwise.  Set this if you don't have either on
      your PATH or want to use a different executable.  Since Apache Ant
      1.6. | No | 
| command | The command to pass to the rpmbuild program. The default is "-bb" | No | 
| quiet | Suppress output. Defaults to false. | No | 
| output/error | Where standard output and error go | No | 
| failOnError | Stop the buildprocess if the RPM build command exits with a non-zero returncode. Defaults to false | No | 
    <rpm
        specFile="example.spec"
        topDir="build/rpm"
        cleanBuildDir="true"
        failOnError="true"/>