DIP 45 - approval discussion

[Walter Bright]

On 11/14/2013 5:31 AM, Benjamin Thaut wrote:
> Am 14.11.2013 11:28, schrieb Walter Bright:
>>
>> This of course means that functions may wind up going through the
>> dllimport indirection even for calling functions in the same dll, but it
>> should work.
>
> Also our suggested approach would not have this downside.
>
> Think about phobos. All of phobos and druntime will be littered with export
> attributes. Do you really want all phobos and druntime from within the same dll
> to go through dll indirections? And what would happen when building phobos as
> static library? With your suggested behavior (export=dllimport if not specified
> otherwise) this would mean that even the phobos static library would have those
> indirections.
>

It's not that bad. Phobos can be built by specifying all the files on the 
command line.

Also, at least on Windows, you can call functions in a DLL without saying 
dllimport on them and suffering a layer of indirection. The magic happens in the 
import library, which provides the relevant thunk. It's about 15 years since I 
worked on this stuff, so I might be a bit fuzzy on the details.