--bashcompletiondir=DIR Bash completions files [SYSCONFDIR/bash_completion.d]
--zshcompletiondir=DIR Zsh completions files [PREFIX/share/zsh/functions/Completion/Unix]
--bashcompletiondir=DIR Bash completions files [SYSCONFDIR/bash_completion.d]
--zshcompletiondir=DIR Zsh completions files [PREFIX/share/zsh/functions/Completion/Unix]