[Development] Issues with latest Qt6 snapshot on Windows

[Tristan Millns]

Take me off this list. 

> On Jul 24, 2020, at 8:56 AM, Sandro Andrade <sandroandrade at kde.org> wrote:
> 
> On Fri, Jul 24, 2020 at 6:58 AM Alexandru Croitor
> <alexandru.croitor at qt.io> wrote:
>> 
>> 
>> 
>>>> On 24. Jul 2020, at 05:59, Sandro Andrade <sandroandrade at kde.org> wrote:
>>> 
>>> Hi there,
>> 
>> Hi!
>> 
>>> 
>>> I'm trying the latest Qt6 snapshot provided by the official installer
>>> on Windows 10 with MSVC 2019.
>> 
>> Thanks for providing feedback!
>> 
>>> 
>>> I've noticed that QMake builds work fine only in Release mode.
>>> Building in Debug mode generates a:
>>> 
>>> qtmaind.lib(qtmain_win.cpp.obj) : warning LNK4099: PDB 'WinMain.pdb'
>>> was not found with 'qtmaind.lib(qtmain_win.cpp.obj)' or at
>>> 'C:\Users\Sandro S.
>>> Andrade\Documents\build-teste3-Desktop_Qt_6_0_0_MSVC2019_64bit-Debug\debug\WinMain.pdb';
>>> linking object as if no debug info
>>> qtmaind.lib(qtmain_win.cpp.obj) : error LNK2019: unresolved external
>>> symbol __imp_CommandLineToArgvW referenced in function WinMain
>>> 
>>> Does such snapshot support only Release builds or am I missing
>>> something in my setup?
>> 
>> The snapshot should have supported Debug builds as well. It's a bug that it doesn't.
>> I can reproduce the issue.
>> 
>>> 
>>> Also, CMake builds with many errors like:
>>> 
>>> CMake Error at CMakeLists.txt:44 (target_link_libraries):
>>> Error evaluating generator expression:
>>> $<TARGET_PROPERTY:Vulkan::Vulkan,INTERFACE_INCLUDE_DIRECTORIES>
>>> Target "Vulkan::Vulkan" not found.
>> 
>> I can reproduce this particular issue also.
>> 
>>> 
>>> Do I need to install Angle, Direct3D, or Vulkan to fix this or is
>>> CMake support with Qt6 on Windows not ready yet?
>> 
>> I'm not sure yet if installing Vulkan will help, but you can try.
>> 
>> The snapshot is just a development snapshot, so it's expected to find issues.
>> 
>> Many issues were already fixed since the snapshot was released, but these apparently haven't been.
>> 
>> You can track the issues at https://bugreports.qt.io/browse/QTBUG-85240
> 
> Thanks for replying. I'll watch the bug and try to build new snapshots
> from sources.
> 
> Sandro
> 
>> 
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