[Boost-build] Incremental build and changes on Jamfiles only

Subject: [Boost-build] Incremental build and changes on Jamfiles only
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2013-01-06 05:39:29

Hi,

I was wondering how the regression testers using an incremental build 
behave when there is just a change on the Jamfile.
Would the targets for which the action that built them has changed be 
rebuilt?

I'm asking this because in my computer I need to pass the -a option to 
ensure that everything is coherent.
Is this a bug on Boost.Build? If yes, shouldn't incremental build be 
avoided on regression testers?

Best,
Vicente