We have a slave running on an HP Itanium host (ver. HP-UX unknown B.11.23 U ia64) where the readlink command does not exists. So when trying to resolve symlinks, slave agent fails with the following error:

hudson.util.IOException2: java.io.IOException: Cannot run program "readlink" (in directory "/misc/home_tmp_dstk110/."): readlink: not found
at hudson.FilePath.copyRecursiveTo(FilePath.java:1771)
at hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:116)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:711)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:686)
at hudson.model.Build$RunnerImpl.post2(Build.java:162)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:633)
at hudson.model.Run.run(Run.java:1463)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:239)
Caused by: java.util.concurrent.ExecutionException: java.io.IOException: Cannot run program "readlink" (in directory "/misc/home_tmp_dstk110/."): readlink: not found
at hudson.remoting.Channel$3.adapt(Channel.java:679)
at hudson.remoting.Channel$3.adapt(Channel.java:674)
at hudson.remoting.FutureAdapter.get(FutureAdapter.java:55)
at hudson.FilePath.copyRecursiveTo(FilePath.java:1769)
... 10 more
Caused by: java.io.IOException: Cannot run program "readlink" (in directory "/misc/home_tmp_dstk110/."): readlink: not found
at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
at java.lang.Runtime.exec(Runtime.java:593)
at org.jruby.ext.posix.util.ExecIt.run(ExecIt.java:61)
at org.jruby.ext.posix.util.ExecIt.runAndWait(ExecIt.java:51)