[CentOS] Problem running a setuid Perl script on CentOS 4.5

I'm trying to create a setuid Perl script (yes, I am aware about the security implications), but am getting this error:

% cat testsetuid.pl #!/usr/bin/perl -UT print "My real user id is $< but my effective user id is $>\n"; exit(0); % ./testsetuid.pl Can't do setuid (cannot exec sperl)

I am using the stock Perl that came with CentOS 4.5. The problem I am trying to solve is to run a software build as a particular user. We want any user to be able to submit a build job that runs on the build machine as the designated build user. If there is a better way to do this, I'm open to suggestions.

Alfred