Can not compile examples on openSUSE15.2 or SLES15 SP2, "undefined reference to `powf@GLIBC_2.27'"

[1/1] Linking CXX executable gui_analogclock
FAILED: gui_analogclock 
: && /usr/bin/c++   CMakeFiles/gui_analogclock.dir/gui_analogclock_autogen/mocs_compilation.cpp.o CMakeFiles/gui_analogclock.dir/home/qt/RTA/qt5/Examples/Qt-6.1.0/gui/rasterwindow/rasterwindow.cpp.o CMakeFiles/gui_analogclock.dir/main.cpp.o -o gui_analogclock  -Wl,-rpath,/home/qt/RTA/qt5/6.1.0/gcc_64/lib:  /home/qt/RTA/qt5/6.1.0/gcc_64/lib/libQt6Gui.so.6.1.0  /usr/lib64/libGLX.so  /usr/lib64/libOpenGL.so  /home/qt/RTA/qt5/6.1.0/gcc_64/lib/libQt6Core.so.6.1.0  -pthread && :
/usr/lib64/gcc/x86_64-suse-linux/9/../../../../x86_64-suse-linux/bin/ld: /home/qt/RTA/qt5/6.1.0/gcc_64/lib/libQt6Gui.so.6.1.0: undefined reference to `powf@GLIBC_2.27'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

ldd qmake
linux-vdso.so.1 (0x00007fffa039f000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007fd7aaa49000)
libm.so.6 => /lib64/libm.so.6 (0x00007fd7aa711000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fd7aa4f8000)
libc.so.6 => /lib64/libc.so.6 (0x00007fd7aa13d000)
/lib64/ld-linux-x86-64.so.2 (0x00007fd7aae23000)

ldd libQt6Gui.so.6.1.0 
./libQt6Gui.so.6.1.0: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by ./libQt6Gui.so.6.1.0)
linux-vdso.so.1 (0x00007ffef1f6f000)
libEGL.so.1 => /usr/lib64/libEGL.so.1 (0x00007f02360ad000)
libfontconfig.so.1 => /usr/lib64/libfontconfig.so.1
(0x00007f0235e68000)
libz.so.1 => /lib64/libz.so.1
(0x00007f0235c51000)
libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007f0235910000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f023570c000)
libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007f02353e7000)
libQt6DBus.so.6 => /home/qt/Qt610/6.1.0/gcc_64/lib/./libQt6DBus.so.6 (0x00007f023511b000)
libxkbcommon.so.0 => /usr/lib64/libxkbcommon.so.0 (0x00007f0234edb000)
libGL.so.1 => /usr/lib64/libGL.so.1 (0x00007f0234c43000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x00007f0234989000)
libgthread-2.0.so.0 => /usr/lib64/libgthread-2.0.so.0 (0x00007f0234787000)
libQt6Core.so.6 => /home/qt/Qt610/6.1.0/gcc_64/lib/./libQt6Core.so.6 (0x00007f0233f6e000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f0233d4f000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007f0233975000)
libm.so.6 => /lib64/libm.so.6 (0x00007f023363d000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f0233424000)
libc.so.6 => /lib64/libc.so.6 (0x00007f0233069000)
libGLdispatch.so.0 => /usr/lib64/libGLdispatch.so.0
(0x00007f0232dad000)
libexpat.so.1 => /usr/lib64/libexpat.so.1 (0x00007f0232b7b000)
libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007f0232952000)
/lib64/ld-linux-x86-64.so.2 (0x00007f0236d54000)
libpcre.so.1 => /usr/lib64/libpcre.so.1 (0x00007f02326c7000)
libdbus-1.so.3 => /usr/lib64/libdbus-1.so.3 (0x00007f0232475000)
libGLX.so.0 => /usr/lib64/libGLX.so.0 (0x00007f0232243000)
libbz2.so.1 => /usr/lib64/libbz2.so.1 (0x00007f0232026000)
libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x00007f0231de3000) libicui18n.so.60 => /home/qt/Qt610/6.1.0/gcc_64/lib/./libicui18n.so.60
(0x00007f023190a000)
libicuuc.so.60 => /home/qt/Qt610/6.1.0/gcc_64/lib/./libicuuc.so.60 (0x00007f0231534000)
libicudata.so.60 => /home/qt/Qt610/6.1.0/gcc_64/lib/./libicudata.so.60 (0x00007f022f98c000)
librt.so.1 => /lib64/librt.so.1 (0x00007f022f784000)
libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007f022f580000)
libsystemd.so.0 => /usr/lib64/libsystemd.so.0 (0x00007f022f2ea000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f022f0c1000)
libcap.so.2 => /usr/lib64/libcap.so.2 (0x00007f022eebc000)
liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007f022ec82000)
liblz4.so.1 => /usr/lib64/liblz4.so.1 (0x00007f022ea6d000)
libgcrypt.so.20 => /usr/lib64/libgcrypt.so.20 (0x00007f022e74f000)
libgpg-error.so.0 => /usr/lib64/libgpg-error.so.0 (0x00007f022e52f000)