When installing Solaris, I chose the “Core System Support” software group, also known as SUNWCreq (which is really just a cluster of packages); more information on the different software groups is available

this because as a server, I didn’t want the installation to include any unnecessary overhead such as CDE. However, this doesn’t provide a toolchain to compile software with, and I wanted to compile Remind. In short, to get a compiler toolchain based on GCC, you need to install the following packages: SUNWgccruntime, SUNWgcc, SUNWtoo, SUNWarc, SUNWarcr, SUNWhea and SUNWgmake. SUNWbinutils might also be necessary (depending on what you’re compiling), and SUNWlibmr and SUNWlibm were also needed for Remind.