Well,
this page says that it requires Python 2.x, JDK 5 or 6, and Git 1.5.4.
Git and Python 2 (I think) are both included in the default Slackware install, while JDK will have to be downloaded from
here.
That page also shows this line
Code:
$ sudo apt-get install git-core gnupg flex bison gperf build-essential \
zip curl zlib1g-dev libc6-dev lib32ncurses5-dev ia32-libs \
x11proto-core-dev libx11-dev lib32readline5-dev lib32z-dev \
libgl1-mesa-dev g++-multilib mingw32 tofrodos
. I'm not sure which of those are part of the default Slackware and which aren't, so you might have to do a little manual dependency testing for that.
If you're a new Slackware user, you can probably find any of those packages you need at slackbuilds.org.
Also, judging from the multilib packages the Ubuntu instructions tell you to download, this might be a 32-bit only thing. If so, you'll want to download alienbob's multilib package set, if you run the 64 bit version of slackware. It isn't multilib-enabled by default.