Update: I was able to find this line in bdep/init-options.cxx. ::bdep::cli::option o ("--config-create", a, false, dv); So I tried --config-create on the command line, and it worked. So the bug is in the (web served) documentation then. https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml Best regards, Torbjørn