Comment # 4 on bug 1007696 from Wolfgang Bauer

See https://build.opensuse.org/request/show/454659 .

I haven't tested it, but the library links against Qt5 now:
> ldd libqcustomplot-qt5.so.1.3.2
        linux-vdso.so.1 (0x00007ffc8af27000)
        libQt5PrintSupport.so.5 => /usr/lib64/libQt5PrintSupport.so.5
(0x00007f7424a0b000)
        libQt5Widgets.so.5 => /usr/lib64/libQt5Widgets.so.5
(0x00007f74241be000)
        libQt5Gui.so.5 => /usr/lib64/libQt5Gui.so.5 (0x00007f7423abc000)
        libQt5Core.so.5 => /usr/lib64/libQt5Core.so.5 (0x00007f7423407000)