private void CompileRunner()
{
FileSet sourceFiles = new FileSet()
.Include(directory_base.SubFolder("src").SubFolder("FluentBuild.BuildExe"))
.RecurseAllSubDirectories.Filter("*.cs");
Task.Build.Csc.Target.Executable(x => x.AddSources(sourceFiles)
.AddRefences(AssemblyFluentBuildRelease_Merged)
.OutputFileTo(AssemblyFluentBuildRunnerRelease));
}