Re: [jamboost] Re: [v2] bad dependency analysis

From: ANDREW MARLOW, BLOOMBERG/ LONDON OF (amarlow1_at_[hidden])
Date: 2005-06-27 10:43:15

----- Original Message -----
From: David Abrahams <jamboost_at_[hidden]>
At: 6/27 16:37

"ANDREW MARLOW, BLOOMBERG/ LONDON OF" <amarlow1_at_[hidden]> writes:

> it's a shame we can't take the guts of
> the X11 utility, makedepend and put it into jam.
> I know that jam takes several shortcuts when it calculates
> the dependencies. makedepend does a full job
> by expanding all the macros to figure out
> what gets included.

We have Wave, so we can do it pretty easily. The problem is that we
have to get all the #defines that the compiler provides automatically
and those that are passed on the command line into the mix. 

AM> One way to do this would be to introduce a new Jam macro,
MACROS, which is the list of -D options. This is similar to
having HDRS, the list of dirs for which the -I option will be used.

In just the same way that the compiler options are altered to
include -I for all the dirs in HDRS, the compiler options
will include MACROS.