On splitting headers (Re:Objectionstoremovingtheoldsmartpointerclasstemplates?)

From: mfdylan (dylan_at_[hidden])
Date: 2002-02-07 18:07:20

--- In boost_at_y..., "mfdylan" <dylan_at_m...> wrote:
> 
> This only requires a single copy of every header file and 
reasonably 
> simple tests - even detecting function vs variable additions could 
be 
> done without having to parse the whole file - for instance just 
look 
> for (...).  It would break if someone did
> 
> int variable; int function();
> 
> But I would more than happily live with that!
> 
I realise it would also not deal to well with introductions that 
might cause existing code that compiles to fail - especially  
ambiguous overloads.  That case can be reasonably easily detected (at 
least, for functions - for operators it starts to get difficult, but 
I suspect there are other more hairy cases.  It would probably come 
down to determining a heuristic that caught 99% of cases, and making 
sure you did a "standard" rebuild every now and then.  Even with 
current make systems it's not uncommon that a full rebuild of all 
sources is necessary because a makefile is incorrectly configured or 
a date/time stamp is wrong somewhere.  Certainly we do all our 
nightly release builds from scratch, which would I guess is fairly 
common practice.

Dylan