On the performance of building D programs

[Paulo Pinto]

On Friday, 5 April 2013 at 11:29:20 UTC, Andrej Mitrovic wrote:
> On 4/5/13, Vladimir Panteleev <vladimir at thecybershadow.net> 
> wrote:
>> I think -r is redundant, and should be the default action if 
>> only
>> one module is given on DMD's command line. I can't think of
>> plausible situations where this could be a problem.
>
> $ dmd main.d foo.obj
>
> If main has imports to 'foo', how will DMD know whether or not 
> to
> compile foo.d or just link with foo.obj?
>

By checking if foo.obj is outdated in regards to foo.d

Turbo Pascal was doing this, so it shouldn't be too hard.

On the other hand it was using a modern linker, not one with UNIX 
compatible semantics.

--
Paulo