[monitor03:~/RT-Crypt-SMIME-0.23] root% perl Makefile.PL
Cannot determine perl version info from lib/RT/Crypt/SMIME.pm
Cannot find the location of RT.pm that defines $RT::LocalPath in: inc /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/5.8.8 . /opt/rt4/lib /opt/lib/rt4 /opt/rt3/lib /opt/lib/rt3 /opt/lib /usr/local/rt4/lib /usr/local/lib/rt4 /usr/local/rt3/lib /usr/local/lib/rt3 /usr/local/lib /home/rt4/lib /home/lib/rt4 /home/rt3/lib /home/lib/rt3 /home/lib /usr/rt4/lib /usr/lib/rt4 /usr/rt3/lib /usr/lib/rt3 /usr/lib /sw/rt4/lib /sw/lib/rt4 /sw/rt3/lib /sw/lib/rt3 /sw/lib
Path to directory containing your RT.pm:  /usr/local/rt4/lib