Has the time come to get rid of the "delivering" of public headers?

Bjoern Michaelsen bjoern.michaelsen at canonical.com
Thu Feb 23 02:24:24 PST 2012

On Thu, Feb 23, 2012 at 10:07:21AM +0000, Michael Meeks wrote:
> > But for things like sw or sc, the lack of encapsulation and the need to include
> > 75% of all the public headers in each and every compile (e.g. via
> > sw/inc/doc.hxx) and reparse those are a real killer.
> 	Ok - so, at least some better data. 

As I cant provide numbers anymore it is also just anecdotal evidence.

> But this seems to suggest that the problem is not multiple include-path
> sub-directories (as was suggested) but badly structured includes - which is
> an orthogonal problem - right ?

Both, in a way: The huge number of includes is the root problem, but not
trivial to fix. The number of -I-switches to the compiler being performance
relevant is a symtomn of that and reducing those might improve build time, but
it is not fixing the root problem.

Fixing the root problem might involve a git hook that gives you an angry stare
for 30 seconds everytime you add more lines to a >1.5KLOC hxx than you remove
from it.

> 	At least, I share Tor's view that we should have some real numbers
> about the cost of a given thing: multiple include paths, vs. single ones
> before doing the re-licensing & then the code re-structuring ;-)




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