Summary of the issue

windeployqt copy wrong mingw dll files, so execution of the .exe file within the deployment directory fails.

Steps to reproduce

1. Create working directory and copy Qt 6.5 (or 6.4) application in the directry
2. execute  windeployqt  --qmldir  <path to the directory contains QML files for the app>   <working directory>
3. Go to the working directory and run the .exe file
    

   Expected behavior

Application is launched without any problem
 

Actual behavior

Application launch fails with misconfiguration. 

When I checked the files copied into the directory, I can see mingw files starting from lib*.dll are not the one we expect to have.

Timestamp and file sizes of lib*.dll files under the working directory

2019/03/14  22:36            76,288 libgcc_s_seh-1.dll
2019/03/14  22:36         1,424,384 libstdc++-6.dll
2019/03/14  22:36            52,224 libwinpthread-1.dll

Timestamp and file sizes of lib*.dll files under  \Qt\6.5.0\mingw_64\bin directory

2021/11/16  21:42            75,264 libgcc_s_seh-1.dll
2021/11/16  21:43         1,957,376 libstdc++-6.dll
2021/11/16  21:43            53,248 libwinpthread-1.dll

I searched for where the files for working directory came from and I guess they are from C:\Strawberry\perl\bin.