[Scons-dev] peculiar issue with aliases and targets

[Tom Tanner (BLOOMBERG/ LONDON)]

Just a question as to whether or not this is a bug or intentional behaviour:

If I define something as both an 'alias' and a 'target' 

if (some condition):
    env.Alias('all', program)

....

env.Depends('all', otherprogram)

env.Command('all', someotherprogram, Touch('$TARGET'))

there's no warning at all, but the result is somewhat confusing, as the command will get executed or not depending on the value of 'some condition' (that line happens to be in a SConscript file, not in the main SConstruct and it took a while to find it)

Is it possible to detect you are trying to mix an alias with a not-alias, and stop processing?