$ ls -l /opt/Qt/6.4.0/gcc_64/lib/libQt6Core.so*
lrwxrwxrwx. 1 root root      15 Sep 27 07:04 /opt/Qt/6.4.0/gcc_64/lib/libQt6Core.so -> libQt6Core.so.6
lrwxrwxrwx. 1 root root      19 Sep 27 07:04 /opt/Qt/6.4.0/gcc_64/lib/libQt6Core.so.6 -> libQt6Core.so.6.4.0
-rwxr-xr-x. 1 root root 6786160 Sep 22 09:12 /opt/Qt/6.4.0/gcc_64/lib/libQt6Core.so.6.4.0

$ ldd /opt/Qt/6.4.0/gcc_64/bin/qsb
linux-vdso.so.1 (0x00007fffe67d8000)
libxkbcommon.so.0 => /lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f35c7cd7000)
libQt6ShaderTools.so.6 => /opt/Qt/6.4.0/gcc_64/lib/libQt6ShaderTools.so.6 (0x00007f35c71ae000)
libQt6Gui.so.6 => /opt/Qt/6.4.0/gcc_64/lib/libQt6Gui.so.6 (0x00007f35c6810000)
libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007f35c6789000)
libQt6Core.so.6 => not found
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f35c655d000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f35c6476000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f35c6456000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f35c6451000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f35c6229000)
libQt6Core.so.6 => not found
libEGL.so.1 => /lib/x86_64-linux-gnu/libEGL.so.1 (0x00007f35c6214000)
libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f35c61ca000)
libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f35c608a000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f35c6085000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f35c5f4b000)
libQt6DBus.so.6 => /opt/Qt/6.4.0/gcc_64/lib/libQt6DBus.so.6 (0x00007f35c5e87000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f35c5e69000)
libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f35c5da1000)
libgthread-2.0.so.0 => /lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f35c5d9c000)
libQt6Core.so.6 => not found
libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f35c5ce4000)
libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f35c5cb0000)
/lib64/ld-linux-x86-64.so.2 (0x00007f35c7d29000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f35c5c7d000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f35c5c74000)
libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f35c5c4a000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f35c5bd4000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f35c5b86000)
libQt6Core.so.6 => not found
libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f35c5b49000)
libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f35c5b3b000)
libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f35c5b35000)
libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f35c5b2d000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f35c5a64000)
libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f35c5a41000)
libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f35c5a29000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f35c59fe000)
libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f35c592f000)
liblz4.so.1 => /lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f35c590f000)
libcap.so.2 => /lib/x86_64-linux-gnu/libcap.so.2 (0x00007f35c5902000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f35c57c4000)
libmd.so.0 => /lib/x86_64-linux-gnu/libmd.so.0 (0x00007f35c57b7000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f35c5791000)