usage: ./build.sh [-a nt32|nt64]  [-b debug|release]   [-C dir[,..]]  [-D kind[,..]]
                  [-F ipv4|ipv6|offline] [-h|--help|  [-p jobs]  [-P]  [-r ALL|LAST]
                  [-r [*[*[*]]]name[,..][:[^|<|<=|>|>=]step,..]]  [-R] [-v[v[v[v]]]]
                  [--as-needed] [--debug-minipix] [--dump-on-abort]  [--reset-state]
                  [--roar]     [[=]<group>|<variable name>=<variable override>[ ..]]

        -h|--help         Show short/full help screen, respectively.
        -v[v[v[v]]]       Be verbose; -vv: always print package logs; -vvv: set xtrace

        <group>[ ..]      One of: dev_packages, dist, host_deps, host_deps_rpm,
                          host_toolchain, host_tools, minipix, native_packages,
                          native_runtime, native_toolchain, native_tools.

                          Prepend w/ `=' to inhibit group-group dependency expansion.

        <variable name>=<variable override>[ ..]
                          Override build or package variable.