[Interest] QMake, (static) libraries and LTCG (LTO) on Mac

[Konstantin Tokarev]

> On Saturday November 11 2017 16:12:38 Konstantin Tokarev wrote:
> 
>> Note that you should be able to build whole qttools module against any Qt install. It should work without any modifications.
> 
> That's what I'd expect but not really what I'm looking for here. I could try it once to see if I get the same LTO-related failures, though.

Well, LTO and missing symbols go hand in hand, you should be ready to deal with such errors.

What is your reason to use LTO? Can you avoid using it?

> 
> FWIW, I found that I had to remove the `help` module from the `QT` line in assistant.pro because otherwise the linker would use the installed version (5.8.0 in my case, which evidently lacks some API). That surprised me a bit, I would have expected that qmake knows how to link the library from the same project, given that it's marked as a dependency for the assistant target.
> 
> R.
-- 
Regards,
Konstantin