[Qbs] Windows 11 & (major|minor)-subsystem-version

[Иван Комиссаров]

Hello!

Someone reported an issue a while ago and I created a ticked just yesterday in order to to not forget it.
https://bugreports.qt.io/projects/QBS/issues/QBS-1724

I suppose, the issue was introduced by this patch https://codereview.qt-project.org/c/qbs/qbs/+/459921 which was an attempt to fix Qbs build with mingw - mingw headers are broken in a way that the old value leaded to incorrect macros in Windows.h

If you find a way to fix Qbs build and actual binaries, you’re welcome to submit a patch.

Note that CMake sets (major|minor)-subsystem-version to 0 (unconditionally?) when building for mingw.
Maybe you can set those to 0 for _linking_ while setting the correct WINVER/whatever macro Qbs sets for _compiling_.

Also, this should be fixed by mingw upstream - otherwise those flags are useless.

Ivan


> 10 апр. 2023 г., в 22:42, Björn Schäpers <qt-maillist at hazardy.de> написал(а):
> 
> Good Day,
> 
> I was recently forced to use Windows 11 at work and was puzzled why many of my programs (but not all!) failed to start with the code 0xc00007b. After a lot of investigation I found the issue to be the subsystem values.
> 
> All affected programs use Qt, which sets the minimum windows version to 10, and the gcc.js (I'm using MinGW) uses this value for the os version as well as the said subsystem version. And those programs do not start on Windows 11, Windows 10 had no problems with that.
> 
> I've inspected a few programs, I've found none which didn't set the value (and the os version too by the way) to anything higher than 6. That includes the CMake generated Qt programs (moc, qmake, etc.) and Microsoft programs like Notepad, Teams, and Outlook.
> 
> I help myself with omitting the parameters right now. What is your take on that? If I propose a patch to not set the subsystem version, does it have a chance to be accepted?
> 
> I've not tested anything with MSVC, but would except the same behavior since it just sets the field in the PE header.
> 
> Kind regards,
> Björn.
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