I build latest qtbase from git.

cmake "../../qt6/qtbase" -DCMAKE_INSTALL_PREFIX=D:\Qt\6.0.0-msvc2019-x64-shared -G"Ninja Multi-Config" -DCMAKE_CONFIGURATION_TYPES=Release;Debug

I find that some pdb and lib files are not be installed:

• bin/Debug/androiddeployqt.pdb
• bin/Debug/androidtestrunner.pdb
• lib/Qt6BundledHarfbuzz.lib
• lib/Qt6BundledHarfbuzzd.lib
• lib/Qt6BundledPcre2.lib
• lib/Qt6BundledPcre2d.lib

Following pdb files of debug tools should be installed to <install_path>/bin/Debug, not <install_path>/bin:

• cmake_automoc_parser.pdb
• moc.pdb
• qdbuscpp2xml.pdb
• qdbusxml2cpp.pdb
• qlalr.pdb
• qmake.pdb
• qvkgen.pdb
• rcc.pdb
• tracegen.pdb
• uic.pdb 

Otherwise, when CMAKE_CONFIGURATION_TYPES=RelWithDebInfo;Debug, the pdb files of release tools and debug tools will be installed to the same path.

The build log is in the attachment of QTBUG-88267.

The install log is in the attachment of this issue.