How to disable the --ignoresize flag when building rpm packages

[shekhar vaggu <vaggushekhar gmail com>]

Hi All,

I am trying to pack a source package into rpm in which I have
implemented some custom disk space checks under %pre tag so that which
will get excuted as a pre-install step.But the problem is even after
doing so when I say rpm -I --ignoresize packagename
still custom diskspace check is executing it as part of pre-install
step. Is it the expected behaviour in rpm or if I want to disable --ignoresize what should I do when building the package? 

Please give me some pointers on this.

Thanks,
Shekhar.