Without the change build fails on upstream gcc-10 as:
ld: evalgraph.o:(.bss+0x20): multiple definition of `ics_type'; backend.o:(.bss+0x1df910): first defined here
ld: nevalgraph.o:(.bss+0x8): multiple definition of `currPvInfo'; backend.o:(.bss+0x1df908): first defined here