- build run "$0 configure" then make(1).
- check [ARG] run "$0 build" then "make check [ARG]".
- configure run autoreconf(1) and "./configure" if necessary.
+ build run "$0 configure" then make(1)
+ check [ARGS] run "$0 build" then "make check [ARGS]"
+ autogen run autoreconf(1)
+ configure run "$0 autogen" and "./configure" if necessary