You might want to use a clean path and do an absolute path for MYPROJ, some
tools are not super friendly with path and spaces into them too.
MYPROJ = $$clean_path($$PWD/../ phidget-spinner)
That would remove the .. from the path and resolve the actual path properly.
Try to change your variable name just to make sure you ain’t hitting a name
clash. Try to always put the {} around your var it always mor safe, if you can
add the “ “ to your path usage too in any case where the path has spaces.
From: Jason H <jh...@gmx.com>
Date: Tuesday, April 27, 2021 at 3:35 PM
To: Andy Shaw <andy.s...@qt.io>
Cc: Jérôme Godbout <godbo...@amotus.ca>, interestqt-project.org
<interest@qt-project.org>
Subject: Re: Svar: [Interest] Qt permanently broke on computer
Good news everybody, I have partialyl figured it out, but I hope you can help
me further.
MYPROJ = ../phidget-spinner
win32 {
INCLUDEPATH +=$$MYPROJ/libraries/phidget22-windevel/lib/c
#this works:
LIBS +=-L$$PWD/../phidget-spinner/libraries/phidget22-windevel/lib/c/x64
-lphidget22
#these breaks Qt (each):
LIBS +=-L$$MYPROJ/libraries/phidget22-windevel/lib/c/x64 -lphidget22
LIBS +=-L"$${MYPROJ}/libraries/phidget22-windevel/lib/c/x64" -lphidget22
LIBS +=-L$${MYPROJ}/libraries/phidget22-windevel/lib/c/x64 -lphidget22
}
message("PWD")
message($${PWD})
message("MYPROJ")
message($$MYPROJ)
message("INCLUDEPATH")
message($${INCLUDEPATH})
message("LIBS")
message($${LIBS})
Working:
Project MESSAGE: PWD
Project MESSAGE: C:/Users/Admin/phidget-spinner
Project MESSAGE: MYPROJ
Project MESSAGE: ../phidget-spinner
Project MESSAGE: INCLUDEPATH
Project MESSAGE: ../phidget-spinner/libraries/phidget22-windevel/lib/c
Project MESSAGE: LIBS
Project MESSAGE:
-LC:/Users/Admin/phidget-spinner/../phidget-spinner/libraries/phidget22-windevel/lib/c/x64
-lphidget22
Now working:
Project MESSAGE: PWD
Project MESSAGE: C:/Users/Admin/phidget-spinner
Project MESSAGE: MYPROJ
Project MESSAGE: ../phidget-spinner
Project MESSAGE: INCLUDEPATH
Project MESSAGE: ../phidget-spinner/libraries/phidget22-windevel/lib/c
Project MESSAGE: LIBS
Project MESSAGE: -L../phidget-spinner/libraries/phidget22-windevel/lib/c/x64
-lphidget22
Not sure why $$MYPROJ works for INCLUDEPATH but breaks the linker? If the link
path is wrong I would expect it to fail the build, bot break Qt?
Sent: Monday, April 26, 2021 at 2:47 PM
From: "Andy Shaw" <andy.s...@qt.io>
To: "Jérôme Godbout" <godbo...@amotus.ca>, "Jason H" <jh...@gmx.com>
Cc: "interestqt-project.org" <interest@qt-project.org>
Subject: Svar: [Interest] Qt permanently broke on computer
What is also useful to check is to set QT_DEBUG_PLUGINS=1 as your environment
variable, it can tell you where it is looking for the plugin then. Maybe it
finds a qt.conf file and it is influencing the paths incorrectly there.
Andy
Fra: Interest <interest-boun...@qt-project.org> på vegne av Jérôme Godbout
<godbo...@amotus.ca>
Dato: mandag, 26. april 2021 kl. 19:33
Til: Jason H <jh...@gmx.com>
Kopi: interestqt-project.org <interest@qt-project.org>
Emne: Re: [Interest] Qt permanently broke on computer
You might try to delete the .user files for the project and clean the build
folder manually (erase the whole folder). Check the project config to spot any
differences there. If some project work with the same Qt version, the Qt
install is probably good. Make sure all you dependencies are ok.
From: Interest <interest-boun...@qt-project.org> on behalf of Jason H
<jh...@gmx.com>
Date: Monday, April 26, 2021 at 11:11 AM
To: Jason H <jh...@gmx.com>
Cc: interestqt-project.org <interest@qt-project.org>
Subject: Re: [Interest] Qt permanently broke on computer
> Sent: Monday, April 26, 2021 at 11:01 AM
> From: "Jason H" <jh...@gmx.com>
> To: "Jason H" <jh...@gmx.com>
> Cc: "interestqt-project.org" <interest@qt-project.org>
> Subject: Re: [Interest] Qt permanently broke on computer
>
> > I tried to port an app on a Win10 PC. That went well. Then I tried to
> > deploy (windeployqt) it.
> >
> > Now when I run it in creator I get:
> > 10:26:28: Starting
> > C:\Users\Admin\Projects\build-phidget-spinner-Desktop_Qt_5_15_2_MinGW_64_bit-Debug\debug\phidget-spinner.exe
> > ...
> > qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
> >
> > I have deleted the C:\Qt dir and re-installed.
> > I have cleaned the app source dir and deleted the shadow build dirs,
> > deleted the .pro.user file,
> > I launched QtC from the start menu.
> >
> > I have no idea how to get this working again.
>
> Some additional info:
> Other projects work.
> The crash is in this statement:
> QGuiApplication app(argc, argv);
>
> the stack indicates a crash starting at:
> QGuiApplicationPrivate::createPlatformIntegration()
>
>
> All the online help (stackexchange) seems to be about deployment, but I'm
> just trying to run it in creator.
Update #2:
The same thing happens on a totaly new computer, never had qt on it before,
installed Qt, copied the source and built it, some error.
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