Qt 6.1.2 build error with Qt Translations

[SamerAfach]

Hi guys, when I attempt to build Qt with Visual Studio 2019 and Ninja, using this recipe (after starting the x86 Native Tools Command Prompt for VS 2019):

> set QMAKESPEC=win32-msvc
> set CL=/MP
> configure -developer-build -confirm-license -opensource -platform %QMAKESPEC% -opengl desktop -static -static-runtime -nomake examples -nomake tests -mp -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -cmake-generator "Ninja"
> ninja

I get these errors:

[6627/7670] cmd.exe /C "cd /D C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qttranslation...t/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm/assistant_ar.qm"FAILED: qttranslations/translations/CMakeFiles/updateqm-assistant_ar.ts qttranslations/translations/qm/assistant_ar.qm
cmd.exe /C "cd /D C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qttranslations\translations && "C:\Program Files\CMake\bin\cmake.exe" -E make_directory C:/Qt/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm && C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qtbase\bin\lrelease.exe C:/Qt/Qt5_src/Qt6.1.2_src/qttranslations/translations/assistant_ar.ts -qm C:/Qt/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm/assistant_ar.qm"
lrelease error: Cannot open C:/Qt/Qt5_src/Qt6.1.2_src/qttranslations/translations/assistant_ar.ts: The system cannot find the file specified.
[6629/7670] cmd.exe /C "cd /D C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qttranslation...Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm/qtwebengine_pl.qm"Updating 'C:/Qt/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm/qtwebengine_pl.qm'...
    Generated 75 translation(s) (75 finished and 0 unfinished)
[6630/7670] cmd.exe /C "cd /D C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qttranslation...rc/Qt6.1.2_32_VS2019/qttranslations/translations/qm/qtquickcontrols2_hu.qm"FAILED: qttranslations/translations/CMakeFiles/updateqm-qtquickcontrols2_hu.ts qttranslations/translations/qm/qtquickcontrols2_hu.qm
cmd.exe /C "cd /D C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qttranslations\translations && "C:\Program Files\CMake\bin\cmake.exe" -E make_directory C:/Qt/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm && C:\Qt\Qt5_src\Qt6.1.2_32_VS2019\qtbase\bin\lrelease.exe C:/Qt/Qt5_src/Qt6.1.2_src/qttranslations/translations/qtquickcontrols2_hu.ts -qm C:/Qt/Qt5_src/Qt6.1.2_32_VS2019/qttranslations/translations/qm/qtquickcontrols2_hu.qm"
lrelease error: Cannot open C:/Qt/Qt5_src/Qt6.1.2_src/qttranslations/translations/qtquickcontrols2_hu.ts: The system cannot find the file specified.
[6640/7670] Linking CXX executable qtbase\bin\meshdebug.exe
ninja: build stopped: subcommand failed.

I'm using latest ninja (1.10.2), and latest cmake (3.20.5), and latest Strawberry Perl (v5.32.1).

(Those errors are besides the errors with small variable name in qt3d, which I fixed myself in the code by renaming the variables.)

Am I doing something wrong?

[SamerAfach]

It seems that the qttranslations repository was somehow tainted by cmake or the build process and files were deleted. I went to that repo and cleaned it up with git reset HEAD --hard and it worked out when I built again.

[chenz]

I also just ran into this issue - ninja will delete the TS files when "cleaning" (e.g. when being invoked via cmake --build . --clean-first).

Seems weird that it would touch anything in the source tree.