DDT 0.11.0 released

[Dicebot via Digitalmars-d-announce]

On Monday, 23 March 2015 at 15:30:43 UTC, Ben Boeckel wrote:
> On Mon, Mar 23, 2015 at 14:04:30 +0000, Dicebot via 
> Digitalmars-d-announce wrote:
>> If you mean separate compilation with different flags per 
>> module and linking into same binary - it is pretty much 
>> illegal in D and can only be done at own risk. I don't know if 
>> it is mentioned anyway on dlang.org but that is inevitable 
>> side-effect of how symbol emitting works.
>
> Makes sense for -fversion and the like (it would be nice if 
> libraries
> exported the list of version symbols they had since it is 
> basically
> ABI...), but not necessarily for things like SSE support where 
> you want
> to do runtime detection and run the fastest version based on 
> the running
> processor. You might need to compile foo.bar.sse3 and 
> foo.bar.sse4 with
> different compiler flags.

I'd suggest to build such modules as separate static libraries 
(which is possible within dub). Risk remains but it at least 
becomes obvious for other developers that this needs care. Also 
parallel build of several static libraries should be generally 
faster than parallel builds of all modules 1-by-1 (overhead of 
single file compilation is huge because of redundant import 
analysis)

Also don't forget that there are plenty of implicit versions that 
get added from compiler flags (like D_NoBoundsChecks or D_PIC).