Where did you download TCMsudo-1.7.4p4-i386.pkg.gz from? If you don't know of it, you should add
http://sunfreeware.com/ to your bookmarks.
What told you that the install steps where configure & make?
A PKG file should be able to be installed with the "pkgadd" command.
Once installed, configure it the same way you would on any Linux distro: with visudo.