[challenge] Linker surgery

[Rainer Schuetze]

On 18.05.2013 00:47, Igor Stepanov wrote:
> On Friday, 17 May 2013 at 17:57:54 UTC, Rainer Schuetze wrote:
>>
>>
>> On 17.05.2013 14:29, Dmitry Olshansky wrote:
>>> 15-May-2013 04:17, IgorStepanov пишет:
>>>> Do this table linked, if you remove all functions, which use it?
>>>
>>> Thanks for this try, but they DO link in always.
>>> And I believe this is a key problem - each function goes into a separate
>>> object but globals are always pulled in!
>>>
>>
>> Yes, if you build a library the functions in a module are split into
>> separate object files, but data is always written into the object file
>> of the original module. The linker cannot split these afterwards if
>> any data in the module is referenced (which might happen by just
>> importing the module).
>>
>> A workaround could be to put the data into a different module.
>
> What happens, if you place table into separate module? This module will
> be compiled as independent object file and (I hope) can be not linked if
> symbols from it will not be used. Or my logic is broken?

That should work with the restrictions as described in reply to Dimitry.