hdt in boot menu requires it:
| Failed to load libgpl.c32
| Failed to load COM32 file /boot/addons/hdt.c32
copy_addon_file ifcpu64.c32 /usr/lib/syslinux/modules/bios/ isolinux
copy_addon_file ldlinux.c32 /usr/lib/syslinux/modules/bios/ isolinux
copy_addon_file libcom32.c32 /usr/lib/syslinux/modules/bios/ isolinux
+ copy_addon_file libgpl.c32 /usr/lib/syslinux/modules/bios/ isolinux
copy_addon_file libmenu.c32 /usr/lib/syslinux/modules/bios/ isolinux
copy_addon_file libutil.c32 /usr/lib/syslinux/modules/bios/ isolinux
copy_addon_file vesamenu.c32 /usr/lib/syslinux/modules/bios/ isolinux