Current Sun architectures supported: sun4d, sun4m, sun4u
Current SGI architectures supported:IP35 IP30 IP28 IP27 IP25 IP26 IP21 IP22
Current Intel architectures supported:i586 i686

Current Sun OS support: 5.8 5.7 5.6 5.5 4.1 4
Current SGI OS support:6.5 6.4 6.2 5
Current Linux Support:2.4 2.2 2.1

The system for searching the architectures and OS levels for the "nearest" compatible match is contained in the ${FreeUSP}/dist/bin/usp-generic-set-path script.This method may be modified by altering the settings on the COMP_ARCHS, OS_REVS, & ARCHDIRS variables. For instance, if you want to build all binaries on a SunOS/5.8 architecture, but those binaries are actually compatible with the 5.7 architecture on which you also run, OS_REVS could be modified to have two occurrences of 5.8 in the string; once in the normal order and again toward the end. (ie. OS_REVS="5.8 5.7 5.6 5.7 5.8") This is not the default because compatibility is often a problem.