qmake generates wrong path to qrc qmlcache

[thesourcehim]

After I installed mingw32 5.14.2 Qt I started to get strange bug in generated Makefile. My project includes a pri that has qrc file like this:
RESOURCES += $$PWD/kbpcomponents.qrc
In Makefile I now have this buggy line:

Makefile: E:/projects/git/dep32/askroclient/askroclient.pro ../../../../Qt/5.14.2/mingw73_64/mkspecs/features/spec_pre.prf \
                <skipped alot of lines>
		E:_projects_git_dep32_qmlutils_KbpComponents_kbpcomponents_qmlcache.qrc \
		askroclient_qmlcache.qrc
	$(QMAKE) -o Makefile E:/projects/git/dep32/askroclient/askroclient.pro -spec win32-g++ CONFIG+=qtquickcompiler

There should not be full path to qmlcache as it is located in build directory and all slashes are replaced with underscores.
I did not have this problem with 5.13.2. Also it does not happen with linux version of 5.14.2.

[thesourcehim]

Fixed
https://bugreports.qt.io/browse/QTBUG-84901

[thesourcehim]

Ok, apparently Qt version is not a problem. The problem is caused by combination of two facts:

1. qrc file included by path, not just name, because it's not in main project directory
2. Build directory and project directory are on different drives (build directory is on C: and source code is on E:)

If I switch build directory to the same drive then the problem is gone. Perhaps qmake under Windows should also replace colons with underscores, not only slashes.

[SGaist]

Hi,

If this worked before then you may have found a regression.

Can you reproduce that with a minimal compilable project ?

[thesourcehim]

I don't believe this is a regression, I just didn't try build my project on a different drive before. qmake replaces all slashes with underscores when generating qmlcache file for a qrc because file name can not contain slashes, but it forgets that under Windows there may be also a colon in the path which should be replaced too. But the colon appears only if the build directory is on a different drive, otherwise generated path is relative and does not start with drive letter.

[SGaist]

Good point

In any case, it still is a bug, you should check the bug report system to see if it's something known. If not, please open a new report providing a minimal compilable example.

[thesourcehim]

Fixed
https://bugreports.qt.io/browse/QTBUG-84901

[SGaist]

Thanks !