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If "configure" detects that UIDs are not supported on the system you
are running on (that is, you are compiling on a system that doesn't look
at all like Unix) then the environment variable USER is used to
determine the invoking user's name. This is then the name which is used
in the p-file and in the delta information for new deltas. This
username is also compared against the list of authorised users by
delta
. Of course, this doesn't provide much security but in the
absence of user ID support, CSSC can't tell who users really are
anyway.
The behaviour of CSSC with respect to this option is not sensitive to whether or not programs are installed set-user-id, because this variable is only consulted on systems where set-user-id is not supported. This may be a problem on systems where it is possible to grant enhanced privileges to a program, but which do not look like Unix to the "configure" program.