Link warning with AdcLib in Release

I integrated AdcLib in my Qt application.
When I compile in Debug mode I don’t see any warning, but when I compile in Release mode I see

AdcLib.lib(adc.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance

I saw this warning for the first time with CE Libraries 2.1 and I thought it was related to this issue and so it would be fixed in 2.2.
But this is not the case and v 2.2 shows the same warning too.

Is this an expected behavior?
Or is it produced by some wrong setting from my side?

Dear @vix

In the library release V2.2 we removed the /LTCG option. But it seems, the /GL (whole program optimization) option has a similar effect.

Please find attached the preliminary version, which has also the /GL option disabled. I hope this finally fixes the linker problem.

Regards, Andy

It seems that this works.