Commands:
--get <flag> output the requested flag to stdout.
--origin <flag> output the origin of the flag to stdout:
value is one of vendor, system, user, env.
--query-features <area>
output the status of features for the given area.
--list output a list of the flags supported by the current vendor.
--export=(sh|make|configure)
output something convenient to import the
compilation flags in a shell script, in make,
or on a ./configure command line.
--dump output all compilation flags with their values
--status print a synopsis with all parameters affecting the
behaviour of dpkg-buildflags and the resulting flags
and their origin.
--help show this help message.
--version show the version.
