After making the system multilib, it’s time to compile wine. In my experience, the latest version of wine that let StarCraft work right away is 1.2.2 — let’s use this for now… So, grab the wine.SlackBuild for 13.1. Then, following AlienBob’s instructions for compiling 32-bit programs, do:
. /etc/profile.d/32dev.sh
Then, open the wine.SlackBuild and change the LIBDIRSUFFIX:
elif [ "$ARCH" = "x86_64" ]; then
SLKCFLAGS="-O2 -fPIC"
LIBDIRSUFFIX=""
After installation, run winecfg before installing the game. The copy I have now is the BestSeller series which has two discs that have to be fed to the installer. Dues to some reason, the installer did not want to see the second disc when I inserted it. So, I just copied StarCraft (Windows).exe, Installer Tome.mpq (Disc 1) and Installer Tome 2.mpq (Disc 2) to a folder on the hard disc and installed from there.
It all works now :)