Kindler
From TechPubs Wiki
Kindler is a flexible, declarative build system that is cross-platform. In fact, it was designed by Raion to explicitly support both modern Unix-likes and IRIX alike.
Availability
Kindler is going to be included in Nekoware but it can also be used with the Nekoware SDK, which offers Lua.
Why Use Kindler for an IRIX project
Kindler understands mipspro. So does Autotools, but CMake? No. Meson? No.
Kindler understands IRIX's limitations and gives verbose diagnostic info.
Kindler can coexist with Meson or CMake in the same project.