Installing a *.pkg.tar Package
I'm trying to install a package called the ARM cross-compiler pacakge. The filename is arm_elf_stl.pkg.tar and if extracted it creates a folder called arm_elf_stl.pkg with another folder called Contents which contains some other files and folders. The closest I've come to figuring out how to install this package is to use pkgadd -d arm_elf_stl.pkg or something along that line, but no such utilities are installed on my slackware machine.
Can someone tell me how I install a *.pkg.tar package like this in Slackware?